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709
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Updated on
26/10/2026 [10:17:00]
Absstract of: FR3174443A1
L’invention concerne un dispositif de dissipation thermique (100) comprenant un caloduc (10) configuré pour un échange thermique entre, d’une part, des sources chaudes (12), comprenant un organe électrique (14), et, d’autre part, une source froide (15), ledit dispositif (100) comprenant en outre : - un premier organe (30) d’interface thermique en contact avec le caloduc (10) et destiné à être en relation d’échange thermique avec l’organe électrique (14), - un deuxième organe (50) d’interface thermique en contact avec le caloduc (10) et destiné à être en relation d’échange thermique avec la source froide (15), ledit premier organe (30) d’interface thermique comprenant une barre omnibus (60) de conduction électrique entre l’organe électrique (14), ladite barre omnibus (60) étant en complémentarité de forme avec ledit caloduc (10). L’invention concerne aussi un boîtier de connexion électrique, un dispositif de stockage d’énergie électrique et un véhicule comprenant un tel dispositif de dissipation. Figure pour l’abrégé : Figure 2
Absstract of: FR3174441A1
La présente invention concerne une composition comprenant un initiateur, un plastifiant, un sel de métal alcalin et au moins un monomère M1 pour la préparation d’un électrolyte polymère. La présente invention concerne également une ou plusieurs cellules électrochimiques et une batterie comprenant ledit électrolyte polymère.
Absstract of: FR3174330A1
L’invention propose des machines et procédés de calandrage comportant un premier rouleau de travail (10) monté rotatif sur un premier support de travail (14), un second rouleau de travail (20) rotatif, et au moins un premier rouleau d’appui (18) qui est monté rotatif sur un premier support d’appui (19), et qui, dans une position relative de contact, est en appui contre le premier rouleau de travail (10),caractérisée en ce que le premier support de travail (14) est monté sur le premier support d’appui (19) par l’intermédiaire d’un premier mécanisme de guidage (16), qui est porté par le premier support d’appui (19) et qui est distinct d’un bâti (2) de la machine, et par lequel le premier support de travail (14) est mobile, par rapport au premier support d’appui (19) et par rapport au bâti (2) de la machine, entre une position relative rapprochée, et une position relative écartée. Figure de l’abrégé : FIG. 6
Absstract of: FR3174446A1
Module de batterie comportant une pluralité de cellules électrochimiques (2) et une armature de bridage mécanique (3) dans laquelle les cellules électrochimiques (2) sont emmanchées transversalement. L’armature de bridage mécanique (3) comporte : – une enveloppe rigide (6) comportant deux flasques (7A, 7B) opposés dont l’un est percé d’orifices de passage (8) dont les dimensions radiales sont supérieures aux dimensions radiales des cellules électrochimiques (2) ; – une garniture compressible (10) contenue dans l’enveloppe rigide (6), entre les deux flasques (7A, 7B), et percée d’orifices traversants de maintien (11) disposés chacun en vis-à-vis d’un orifice de passage (8), les orifices traversants de maintien (11) étant de dimensions radiales inférieures aux dimensions radiales des orifices de passage (8). Les cellules électrochimiques (2) sont insérées chacune dans un orifice de passage (8) et dans l’orifice traversant de maintien (11) correspondant, la garniture compressible (10) étant comprimée en enserrant radialement la cellule électrochimique (2). Figure pour l’abrégé : Fig.4
Absstract of: FR3174442A1
Dispositif de dissipation thermique, notamment pour véhicule automobile, ledit dispositif comprenant un caloduc (10) configuré pour un échange thermique entre, d’une part, une source chaude (12) comprenant un organe électrique (14), et, d’autre part, une source froide (16), ledit dispositif comprenant en outre : - un premier organe d’interface thermique (20) en contact avec le caloduc (10) et destiné à être en relation d’échange thermique avec l’une desdites sources chaude ou froide (12, 16), - un deuxième organe d’interface thermique (22) en contact avec le caloduc (10) et destinée à être en relation d’échange thermique avec l’autre desdits sources chaude ou froide (12,16), ledit premier organe d’interface thermique (20) présentant une première bride (20a) en contact avec le caloduc (10), une deuxième bride (20b) destinée à être en relation d’échange thermique avec ladite source chaude ou froide (12, 16) en cause et une zone souple (20c) située entre lesdites première et deuxième brides (20a, 20b). Figure pour l’abrégé : Figure 2
Absstract of: US20260331565A1
0000 A method of preparing a solid electrolyte (SE) material is disclosed. SE material particles, a solvent, and milling balls are provided such that the SE material particles and the milling balls are completely submerged in the solvent. The SE particles comprise a sulfide-containing material. The solvent is selected from the group consisting of isopropyl sulfide, dimethyl trithiocarbonate, undercane, hexadecane, octanethiol, undecanethiol, hexadecanethiol, and mixtures thereof. The SE material particles are ball milled such that at least part of the SE material particles break down into smaller particles. While performing the ball milling, the SE material particles and the milled particles are completely submerged in the solvent. The milled SE material particles are then separated from the solvent and dried.
Absstract of: US20260331635A1
0000 Embodiments of the present disclosure provide a heat exchange assembly, a battery apparatus, and an electric apparatus. The battery apparatus includes a casing, a heat exchange assembly, and a plurality of battery cells. The plurality of battery cells are disposed within the casing. The heat exchange assembly includes at least two heat exchange members, where at least one heat exchange member is configured as a flexible member, and at least one heat exchange member is configured as a rigid member. The flexible member and the rigid member are stacked to form at least one medium flow channel. The at least one medium flow channel is configured to conduct a heat exchange medium, where the heat exchange medium is configured to exchange heat with the plurality of battery cells. At least one of the flexible member and the rigid member includes an anti-corrosion layer.
Absstract of: WO2026221118A1
A nonaqueous electrolytic solution battery according to the present invention is provided with a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. A coating film is formed on the surface of the negative electrode. In an X-ray photoelectron spectroscopy measurement performed at a position in the coating film 10 nm, expressed as a SiO2 equivalent value, away from the surface of the negative electrode in the film thickness direction, the total value a of the atomic percentage of P, N, and S elements relative to the total atomic amount of C, O, F, P, N, and S elements contained in the coating film on the surface of the negative electrode is in the range of more than 1.0 at% to not more than 7.0 at%, and the total value b of the atomic percentage of P and N elements is not more than 0.4 at%.
Absstract of: WO2026221269A1
The present invention relates to an all-solid-state battery. More specifically, the all-solid-state battery comprises: an electrode assembly; a can assembly for accommodating the electrode assembly; and a cap assembly coupled to the can assembly, wherein the can assembly and the cap assembly can form an accommodation space in which the electrode assembly is accommodated. The cap assembly can include a through-hole passing through the cap assembly and enabling inert gas to be injected into the accommodation space. The through-hole connects to the accommodation space, and the accommodation space is filled with the inert gas so that inert state can be established.
Absstract of: US20260331522A1
An ultra-thin current collector for lithium-ion batteries includes a polymeric separator having a first primary surface and a second primary surface, the collector addressing weight and energy density limitations of traditional designs. A first layer comprising active materials is disposed on the primary surface of the polymeric separator, the active materials being coated directly onto the separator to achieve a thickness in the range of less than 1.0 μm in some examples. The batteries can also include layers having a material selected from non-woven copper cloth and CuNi-coated felt in electrical contact with one or more of the active materials. A configuration incorporating the ultra-thin current collector improves energy density, reduces internal resistance, and enhances flexibility. A battery architecture supported by the configuration includes tab-less designs and faster charge-discharge rates.
Absstract of: DE102025115311A1
Batteriezelle für eine Energiespeichervorrichtung eines elektrisch antreibbaren Kraftfahrzeugs; wobei die Batteriezelle ein prismatisches Batteriegehäuse umfasst; die Batteriezelle wenigstens zwei innerhalb des Batteriegehäuses angeordnete Zellstapel aufweist; die wenigstens zwei Zellstapel seriell zueinander geschaltet sind; das Batteriegehäuse in einer ersten Richtung eine Länge, in einer zu der ersten Richtung senkrechten zweiten Richtung eine Breite und in einer zu je der ersten Richtung und der zweiten Richtung senkrechten dritten Richtung eine Dicke aufweist; die Länge des Batteriegehäuses größer ist als die Breite des Batteriegehäuse; die Breite des Batteriegehäuses größer ist als die Dicke des Batteriegehäuse; und die wenigstens zwei Zellstapel in der dritten Richtung geschichtet angeordnet sind; und/oder die wenigstens zwei Zellstapel in der ersten Richtung nebeneinander angeordnet sind; und/oder die wenigstens zwei Zellstapel in der zweiten Richtung nebeneinander angeordnet sind.
Absstract of: US20260331715A1
0000 A battery module, including a plurality of battery cells, a busbar holder on the plurality of battery cells, a plurality of busbars on the busbar holder, the plurality of busbars electrically connecting the plurality of battery cells, a flexible circuit board on the busbar holder, the flexible circuit board being electrically connected to the plurality of busbars, a first coupling portion on the flexible circuit board, and a second coupling portion on the busbar, the second coupling portion being detachably coupled to the first coupling portion and electrically connected with the first coupling portion.
Absstract of: US20260331596A1
0000 Disclosed is an electrode for secondary batteries, the electrode including a current collector and an electrode mixture layer disposed on at least one surface of the current collector, wherein the electrode mixture layer is divided into a first region extending a predetermined length from a winding start end in a winding direction and a second region extending from the first region to a winding termination end. Each of the first region and the second region comprises an active material, a conductive agent, and a binder, the first region and the second region include binders with different contents, or the first region and the second region include different types of binders, and the first region has higher ductility than the second region.
Absstract of: WO2026221824A1
Herein discussed is an electrochemical device comprising an anode, a cathode, and an electrolyte, wherein the cathode comprises lithium manganese iron phosphate (LiFexMn1-xPO4, LMFP), or lithium iron phosphate (LiFePO4, LFP), or Lithium Manganese Oxide (LixMnyOz, LMO), or Lithium Nickel Oxide (LNO), or Lithium Nickel Manganese Oxide (LNMO), Lithium-and-Manganese-Rich (Li1+x(NiaMnbCoc)1-xO2), (Li2MnO3)x(LiNiaMnbCocO2)(1-x), LMR), or combinations thereof, wherein the anode comprises artificial graphite or synthetic graphite or natural graphite or hard carbon, wherein the anode comprises no more than 10 wt% of silicon, wherein the anode comprises no more than 10 wt% of lithium metal, wherein the electrolyte comprises a solvent and a salt, wherein the salt is substantially dissolved in the solvent, wherein the solvent comprises a linear carbonate of no less than 30 wt% based on the electrolyte weight, and wherein the solvent comprises a sulfonamide.
Absstract of: WO2026221211A1
The present invention relates to: a slurry for an all-solid-state battery; a positive electrode for an all-solid-state battery, the positive electrode being produced using the slurry; and an all-solid-state battery. More specifically, the slurry for an all-solid-state battery comprises a sulfide-based solid electrolyte, a non-aqueous solvent, and an additive, wherein the additive may include an amine-based polymer and a fatty acid compound.
Absstract of: WO2026221379A1
Provided is a manufacturing method of a bipolar electrode assembly, the manufacturing method according to an embodiment of the present invention preparing two or more bipolar unit cells, each including a current collector, a sealing member formed to surround the edges of the current collector, and an active material layer formed on one surface or both surfaces of the current collector, and stacking the bipolar unit cells such that a separator is interposed between the bipolar unit cells where the active material layers of different polarities face each other, and comprising the steps of: (a) applying an electrolyte onto the active material layer of one bipolar unit cell before stacking the another bipolar unit cell thereon; and (b) stacking another bipolar unit cell on the one bipolar unit cell, and then hot-rolling the sealing members.
Absstract of: WO2026221160A1
The present invention relates to a secondary battery electrode, a secondary battery comprising same, and a method for manufacturing same. More specifically, the present invention relates to a secondary battery electrode coated with an organic active material, a secondary battery comprising same, and a method for manufacturing same.
Absstract of: US20260331729A1
A battery pack including a plurality of battery cells, a protection circuit, a first switch, and a second switch. The protection circuit is connected to the plurality of battery cells. The protection circuit is configured to monitor a voltage of each of the plurality of battery cells, compare the voltage of each of the plurality of battery cells to a threshold voltage, and output a protection signal in response to the voltage of at least one of the plurality of battery cells being greater than or equal to the threshold voltage. The first switch is connected to the protection circuit. The first switch is configured to receive the protection signal. The second switch is connected to the first switch and the plurality of battery cells. A conductive state of the second switch is controlled by the first switch.
Absstract of: WO2026221192A1
The present invention relates to an all-solid-state battery. The all-solid-state battery comprises: a cathode including a cathode current collector and a cathode active material layer disposed on at least one surface of the cathode current collector; an anode including an anode current collector and a coating layer disposed on at least one surface of the anode current collector; and a solid electrolyte layer disposed between the cathode and the anode, wherein a first interface between the cathode current collector and the cathode active material layer and/or a second interface between the cathode active material layer and the solid electrolyte layer has a three-dimensional network structure, or a third interface between the coating layer and the anode current collector has a three-dimensional network structure.
Absstract of: WO2026221196A1
A battery cell according to an embodiment of the present invention includes: an electrode assembly; a battery housing which accommodates the electrode assembly; a top cap which covers an opening provided on one side of the battery housing; and an air pocket which is accommodated in the battery housing, is provided above the electrode assembly, and includes at least one vacuum chamber therein.
Absstract of: WO2026221212A1
The present invention relates to an all-solid-state battery and an all-solid-state battery manufacturing method therefor, and, more specifically, the all-solid-state battery may comprise: a cathode including a cathode current collector and a cathode active material layer; an anode including an anode current collector and an anode coating layer; a solid electrolyte layer disposed between the cathode and the anode; and an adsorption layer on the cathode current collector and/or the anode current collector. The cathode active material layer includes a sulfide-based cathode active material, the cathode current collector and/or the anode current collector has at least one hole capable of discharging hydrogen sulfide, and the adsorption layer can adsorb hydrogen sulfide.
Absstract of: WO2026221533A1
The invention relates to A compression pad (1) for a battery unit (50), the compression pad (1) is gas-tight and comprises at least one gas chamber (2), the at least one gas chamber (2) being filled with at least one gas (4), and the gas chamber (2) of the compression pad (1) comprises at least one adsorption material (6) provided for adsorption of the at least one gas (4) of the compression pad (1). Besides, the invention relates to a battery cell (52), a battery unit (50) and a vehicle (100).
Absstract of: WO2026219757A1
The invention pertains to an electrochemical cell having an anode, a cathode, and a separator between the anode and the cathode separating them from each other, wherein the anode is molten sodium, the separator is a sodium ion conducting inorganic membrane, the separator having a surface in contact with the molten sodium anode, the separator comprising metallic zinc at its surface facing the anode, wherein the metallic zinc is present in an amount in the range of 0.05-20 g/1000cm2. It has been found that the presence of metallic zinc at the surface of the separator which faces a molten sodium anode leads to excellent wetting of the surface by the sodium, without high temperature activation or operating at higher temperatures being required. A zinc-containing separator and a method for its manufacture are also claimed.
Absstract of: US20260328858A1
A battery health monitoring and fault detection system is disclosed. The system comprising a data collection module to collect real-time data during a controlled charging phase of a battery; a machine learning analysis module to analyze the collected data using machine learning program to identify patterns, anomalies, and deviations in the charging behavior of the battery; a prediction module operatively connected to the machine learning analysis module, to estimate a battery life and detect early stage potential battery fault based on the analyzed data; a control module configured to regulate the controlled charging phase of the battery based on the outputs of the prediction module; and a communication interface configured to enable data transmission to a remote server or cloud-based platform for further analysis and integration with external battery management systems.
Absstract of: WO2026218296A1
Provided are a battery cell, a battery device, an electric device and an energy storage device. A positive electrode sheet of the battery cell comprises a positive electrode film layer, wherein the positive electrode film layer comprises a first type of particles and a second type of particles; the first type of particles and the second type of particles comprise a lithium-containing transition metal phosphate material; the primary particle size of the first type of particles is greater than or equal to 50 nm and less than or equal to 180 nm, and the primary particle size of the second type of particles is greater than 180 nm and less than 900 nm; and the average value of the molar proportions of Mn in the first type of particles is smaller than the average value of the molar proportions of Mn in the second type of particles, the molar proportion of Mn referring to the proportion of the number of moles of Mn relative to the total number of moles of Mn and Fe. The electrolyte solution of the battery cell comprises a linear carbonate solvent, wherein on the basis of the total mass of the electrolyte solution, the mass fraction of the linear carbonate solvent is 50%-80%.
Absstract of: US20260331720A1
0000 A current collector and a cylindrical battery cell including the same are provided. The current collector includes an uncoated-portion contact portion, at least a portion of which is coupled to a first electrode uncoated portion of a first electrode of an electrode assembly of the cylindrical battery cell such that the uncoated-portion contact portion is electrically connected to the first electrode, and a can contact portion coupled to the uncoated-portion contact portion to be electrically connected thereto, at least a portion of which contacts an inner circumferential surface of a can of the cylindrical battery cell such that the can contact portion is electrically connected to the can. The uncoated-portion contact portion includes the same material as the first electrode uncoated portion, and the can contact portion includes the same material as the can.
Absstract of: US20260331497A1
Disclosed is an anode coating comprising particles of elements A and B and a carbonaceous material, wherein element A is alloyable with lithium and element B is not alloyable with lithium. Methods for preparing the coating and all solid-state battery (ASSB) comprising the same are also disclosed. In one embodiment, ASSB comprising the coating exhibits a reduced charging overpotential and an improved specific capacity and cycle life.
Absstract of: WO2026221285A1
Provided is a solid secondary battery capable of maintaining good discharge characteristics and capacity retention characteristics even after pressure molding. The solid secondary battery comprises a positive electrode, a solid electrolyte layer, and a negative electrode. The solid electrolyte layer is disposed between the positive electrode and the negative electrode, the negative electrode comprises a negative electrode current collector, a negative electrode active material layer, and an insulating coating layer, the insulating coating layer contains at least one type of inorganic filler, the negative electrode current collector has a first main surface and a second main surface opposite to the first main surface, the negative electrode active material layer is disposed on the first main surface side of the negative electrode current collector, and the insulating coating layer is a cured film formed by curing a coating film directly applied on the second main surface of the negative electrode current collector.
Absstract of: US20260331707A1
In the present power storage device, a spacer is provided between a sealing plate and an electrode assembly, the spacer has a pair of side walls extending toward the electrode assembly and disposed at a predetermined interval, at least an outermost layer separator of the separator has an extension portion extending from an end portion of each of a negative electrode and a positive electrode toward the spacer, and the extension portion is disposed on an inner side of each of the side walls or is fixed to the side wall. According to the present power storage device, when inserting the electrode assembly into a case main body, a step due to bending of end portions of the separator can be suppressed from being formed at an end portion of the electrode assembly.
Absstract of: US20260331406A1
A circuit protection unit to be applied to a conductive module includes: a circuit protection component; a first terminal fitting that electrically connects a first electric connection portion to the circuit protection component; a second terminal fitting that electrically connects a second electric connection portion to the circuit protection component; and a housing component that has insulation property and internally houses the first electric connection portion, the second electric connection portion, and the circuit protection component. The housing component includes a bottom wall portion; a plurality of side wall portions protruding from the bottom wall portion and provided at positions surrounding the first electric connection portion, the second electric connection portion, and the circuit protection component as viewed from a plate thickness direction (height direction); and a side wall opening opened toward a direction intersecting with the plate thickness direction.
Absstract of: US20260331727A1
0000 A circuit protection component connects a first electrode to a first connection surface, and connects a second electrode to a second connection surface. In the first electrical connection unit, a first through hole is provided with a hole diameter less than an interval between first and second electrical connection units in the arrangement direction. In the second electrical connection unit, a second through hole is provided with a hole diameter less than an interval between the first and second electrical connection units. A pair of coating holding units holds a coating resin unit, and is disposed on an imaginary line in the arrangement direction in which the first through hole, the first connection surface, the second connection surface, and the second through hole are arranged.
Absstract of: US20260328656A1
A formation gas analysis system includes a formation chamber defining a cavity and configured for conducting a formation cycle of a secondary energy storage device within the cavity to generate a formation gas. The storage device has a rigid metal outer enclosure that remains at least partially unsealed during the formation cycle. The system includes a vacuum pump; a vent line interconnecting the secondary energy storage device and the vacuum pump; a first valve and second flow controller spaced apart from one another along the vent line and disposed between the formation chamber and the vacuum pump; a pressure gauge disposed between the first valve and second flow controller; a third valve disposed between the pressure gauge and the second flow controller; and a gas analyzer configured for determining a composition of the formation gas. A method of analyzing a formation gas is also described.
Absstract of: US20260326571A1
A method for controlling a structural battery for an electric vehicle according to an embodiment representing a method for controlling a center floor structural battery configured with structural battery modules applied to a vehicle includes: charging the respective structural battery modules; monitoring whether the respective structural battery modules are damaged; independently controlling charging and discharging of the respective structural battery modules depending on whether the respective structural battery modules are damaged; supplying electric power of the respective structural battery modules to a load device of the vehicle; monitoring whether the load device is damaged; and blocking a current flow to the respective structural battery modules when the load device is damaged.
Absstract of: WO2026221261A1
A battery assembly according to one embodiment of the present invention comprises: a battery cell unit formed by connecting at least one battery cell to each other in a first direction; a plurality of bus bar frame assemblies disposed between the battery cells adjacent to each other in the first direction and at both ends of the battery cell unit; a battery cell stack formed by stacking the battery cell units in a second direction orthogonal to the first direction; and a cooling spacer extending in the first direction and including one or more flow channels through which a refrigerant flows, wherein the cooling spacer may be disposed between the battery cell units adjacent to each other in the second direction.
Absstract of: WO2026220419A1
The present invention provides a dual ion water-in-salt hybrid electrolyte composition and a low-cost scalable cathode for zinc ion battery. The cathode is fabricated from commercially available V₂O₅ and oxidizing agent. Additionally, a dual-ion water-in-salt hybrid electrolyte composition comprises zinc salt, lithium salt, co-solvent and water. This electrolyte, comprising co-solvent and water, supports stable cycling and excellent Zn plating/stripping behaviour, maintaining performance for over 1986 hours in Zn symmetric cells at a current density of 2 mA cm⁻². Furthermore, the zinc-ion battery demonstrates exceptional cycling life, with Coulombic efficiency (CE) sustaining over 10000 cycles when the electrolyte composition is optimized with a 50:50 water:co-solvent ratio. These advancements result in a zinc-ion battery with improved stability, efficiency, and long-term cycling performance, making it suitable for practical energy storage applications.
Absstract of: US20260331466A1
0000 A negative electrode for a rechargeable lithium battery includes a current collector and a negative electrode active material layer on the current collector. The negative electrode active material layer includes a first silicon composite and a second silicon composite. The first silicon composite includes amorphous silicon and a first carbon material. The second silicon composite includes crystalline silicon and a second carbon material. The negative electrode has a DQ/DV value obtained by differentiating a discharge capacity Q of the negative electrode with respect to a voltage V. The DQ/DV values include a first peak value being a maximum value in a voltage range of about 0.23 V to about 0.25 V, and a second peak value being a maximum value in the voltage range of about 0.4 V to about 0.5 V. A ratio of the second peak value to the first peak value is about 3.5 to about 5.5.
Absstract of: WO2026221057A1
The present invention prevents the current between a power generation element and a conductor disposed in the lamination direction of the power generation element from being stopped. An all-solid-state battery 1 has: a power generation element 20 in which a positive electrode layer 21, a negative electrode layer 22, and an electrolyte layer 23 are laminated; a conductor 50 electrically connected to the power generation element 20; and a case 60 that accommodates the power generation element 20 and the conductor 50. The case 60 has a fixing part 615 to which the conductor 50 is fixed. The conductor 50 has: a plate-like planar part 51 which is positioned in the lamination direction with respect to the power generation element 20 and at least a portion of which is in contact with the power generation element 20; and a plurality of locking parts 52 which extend in the lamination direction along and outside the power generation element 20 from an outer peripheral part of the planar part 51 and are fixed to the fixing part 615 of the case 60. The planar part 51 has, on at least one surface in the thickness direction, a groove part 54 of which at least a portion extends in the arrangement direction of one pair of locking parts 52 among the plurality of locking parts 52.
Absstract of: DE102025115375A1
Die Erfindung betrifft ein Verfahren zur Bestimmung der Leistungsfähigkeit einer Batterie (1) mit zwei Anschlüssen (2, 3), wobei an den Anschlüssen (2, 3) mindestens ein Schaltelement (4) angeschlossen ist, mit dem die Anschlüsse (2, 3) überbrückbar sind, wobei zur Bestimmung der Leistungsfähigkeit eine Spannung über der Batterie (1) gemessen wird, wobei zur Bestimmung der Leistungsfähigkeit ferner ein Entladeimpuls durch Schalten des mindestens einen Schaltelements (4) erzeugt wird.
Absstract of: WO2026218163A1
The present invention relates to the technical field of batteries. Specifically disclosed are a solid-state electrolyte having a graded structure, a secondary battery, and a preparation method therefor. The mechanical strength of the solid-state electrolyte successively increases from a positive electrode side to a negative electrode side, thereby forming a gradient Young's modulus distribution having a graded structure; and a raw material for preparing the solid-state electrolyte is a solid-state polymer precursor solution, comprising a polymer monomer, an electrolyte lithium salt, an ionic liquid crosslinking agent, and an initiator. By virtue of the excellent flexibility on the positive electrode side, the mechanical stress caused by volume changes is buffered, to a certain extent, thereby improving the coulombic efficiency and cycling stability of the battery; and by virtue of the high mechanical strength on the negative electrode side, the generation of lithium dendrites is suppressed, thereby preventing short circuits of the battery during cycling. In-situ polymerization enables the electrolyte to have good interfacial compatibility with positive and negative electrodes, promotes close contact of interfaces, and avoids formation of interfacial pores and point contacts. A graded gradient distribution of the proportion of the ionic liquid crosslinking agent is achieved by means of electric field driving, thereby improving the ionic conductivity of the electrolyte.
Absstract of: WO2026220935A1
A positive electrode 5 for a non-aqueous electrolyte battery according to the present disclosure comprises: a positive electrode active material that contains a layered oxide; and industrial lignin. The industrial lignin includes, e.g., lignin sulfonate. The content ratio of the industrial lignin to the total of the positive electrode active material, an electroconductive assistant, a binder, and the industrial lignin is, e.g., within the range of 0.1-6.0 mass%.
Absstract of: WO2026219011A1
The present application relates to the technical field of batteries, and provides a cold plate, a cooling system, a battery pack, and an electric device. The cold plate comprises a plate body, the plate body is provided with a first flow channel and a second flow channel which are separated from each other, and the first flow channel surrounds at least a portion of the second flow channel. One of the first flow channel and the second flow channel in the plate body may allow a refrigerant to flow therethrough, and the other of the first flow channel and the second flow channel may allow a coolant to flow therethrough, so that both the refrigerant and the coolant may flow through the cold plate. The refrigerant and the coolant in the cold plate can sufficiently exchange heat by means of an inner wall structure in the cold plate. In this way, when the temperature of the coolant is relatively high, the refrigerant flowing through the cold plate can also absorb heat from the coolant, so that the temperature of the coolant is reduced, thereby enhancing the temperature uniformity of the cold plate, and enabling the cold plate to provide a more sufficient and uniform cooling effect for a battery module.
Absstract of: WO2026218224A1
A battery system, the battery system comprising a first battery pack and a second battery pack, wherein the first battery pack comprises a plurality of first battery cells, and the second battery pack comprises a plurality of second battery cells; chemical systems of the first battery cells and the second battery cells are different, and an equivalent charging rate of the first battery cells within 10% SOC-80% SOC is greater than an equivalent charging rate of the second battery cells within 10% SOC-80% SOC; the first battery pack and the second battery pack can independently provide a voltage to a load. The battery system achieves quick charging for the battery cells, and also enables any one of the battery packs to provide redundancy for the other battery pack, thereby maximizing performance advantages of power supply devices in various scenarios.
Absstract of: WO2026221926A1
The present inventions relate to methods, systems, apparatuses, controllers, software, and composition of matter associated with forming electrodes. The electrodes are formed by a controlled electrode conditioning process such as a buffering process, cleaning process, and/or buffer exchange process. Such electrode formation enables optimized charge carrier uptake, uniform formation of passivation layer, uniform charge distribution, and/or electrochemical stabilization, before electrode integration into an electrochemical cell. Such electrode formation allows for regulation of electrolyte composition, charge carrier diffusion, active material passivation, process automation, and/or environmental control, promoting consistent electrode performance and scalability for high-throughput manufacturing.
Absstract of: WO2026221234A1
An embodiment of the present invention provides a unit electrode, a method for manufacturing same, and a stack cell including same, in which the unit cell facilitates storage and transportation and reduces process defects such as winding misalignment and positional errors in an alignment process, and comprises: a current collector; a first active material layer located on the current collector; a second active material layer located under the current collector; an upper separator including a first upper separator located on the first active material layer and second upper separators extending outward from both sides of the first upper separator, respectively; and a lower separator including a first lower separator located under the second active material layer and second lower separators extending outward from both sides of the first lower separator, respectively, wherein the second upper separators and the second lower separators are coupled to each other while surrounding the sides of the current collector, the first active material layer, and the second active material layer.
Absstract of: WO2026221221A1
The present invention relates to a slurry for an all-solid-state battery, and a positive electrode for an all-solid-state battery and an all-solid-state battery, manufactured using same. More specifically, the slurry for an all-solid-state battery includes a sulfide-based solid electrolyte, a binder, a non-aqueous solvent, and an additive, wherein the additive may include a cyclic phosphazene compound.
Absstract of: US20260331622A1
0000 A thermal management system for a vehicle includes a radiator and a chiller. The thermal management system may include multiple configurations to provide cooling to components of the vehicle. In a first configuration, the components may be cooled via a radiator. In a second configuration, some of the components may be cooled via the radiator while other components may be cooled via a chiller. In a third configuration, the components may be cooled via the chiller. The configuration of the thermal management system may be based on the temperature of the components.
Absstract of: US20260331627A1
0000 An integrated battery heating system configured to provide heat and measure the temperature of a battery cell structure. The system includes a heating element and a temperature measurement device disposed onto a layer of the battery cell structure and configured to directly heat and measure the temperature of the battery cell structure. The heating element and temperature measurement device are electrically connected to contact terminals configured to receive energy and power the heating element and temperature measurement device.
Absstract of: US20260326579A1
Electrolyte materials having the formulas Li2CaCl4 or Li3Ca2Cl7 are provided, wherein the electrolyte material crystallizes in a space group selected from the group consisting of Cm, Imma, Cmmm, and P1. A solid-state battery comprising Li2CaCl4 or Li3Ca2Cl7 electrolyte materials is provided. Methods for making Li2CaCl4 and Li3Ca2Cl7 electrolyte materials are also provided.
Absstract of: US20260331634A1
Battery enclosure systems and methods for cooling batteries are provided. A method for cooling a battery includes locating a metal cold plate in a mold, wherein the metal cold plate includes an internal channel; filling the mold with resin and cooling to form an overmolded battery tray including an outer part surrounding the metal cold plate; wherein the overmolded battery tray has a bottom surface formed by the outer part and an upper surface formed by the metal cold plate; connecting the internal channel with a coolant supply; locating the battery on the metal cold plate; and attaching a cover to the overmolded battery tray to enclose an internal volume, wherein the battery is in the internal volume.
Absstract of: US20260331738A1
Systems and methods disclosed herein include an immersion cooling system configured to cool a battery. The immersion cooling system comprises a housing including a flow space configured to be filled with an insulating cooling fluid and to accommodate a cell module, and a through-hole. A high voltage terminal block device is configured to be installed into the through-hole and includes a conductive fastening part configured to be in electrical contact with a cell tab of the cell module. An outer conductive part is configured to attach to the conductive fastening part and to protrude to an outside of the housing when the high voltage terminal block device is installed into the through-hole and to electrically connect to an external power terminal. An insulating injection-molded part is configured to surround outer circumferences of the conductive fastening part and the outer conductive part.
Absstract of: US20260331710A1
0000 The present invention is directed to a battery pack connection scheme which provides a synchronized direct current (“DC”) environment for every battery unit in the pack. The connections within the present invention are be made via respective conductive paths each including a high-power DC precision cable segment and having a low resistance suitable to allow a high charge or discharge rate. In some embodiments of the present invention, there may be multiple rows of parallel-connected batteries arranged in a series to provide higher output voltage.
Absstract of: US20260331607A1
0000 The present invention is directed to a portable battery pack connection scheme which provides a synchronized direct current (“DC”) environment for every battery unit in the pack. The connections within the present invention are be made via respective conductive paths each including a high-power DC precision cable segment and having a low resistance suitable to allow a high charge or discharge rate. In some embodiments of the present invention, there may be multiple rows of parallel-connected batteries arranged in a series to provide higher output voltage.
Absstract of: US20260331568A1
0000 Electrolyte materials having the formulas Li<3>Ca<3>Cl<7>O, Li<5>Ca<2>Cl<7>O, and Li<5>CaCl<5>O are provided, wherein the electrolyte material crystallizes in a space group selected from the group consisting of Cm, P2_1, Pc, Pm, P3m1, P1, and Pmn2_1. A solid-state battery comprising Li<3>Ca<3>Cl<7>O, Li<5>Ca<2>Cl<7>O, or Li<5>CaCl<5>O electrolyte materials is provided. Methods for making Li<3>Ca<3>Cl<7>O, Li<5>Ca<2>Cl<7>O, and Li<5>CaCl<5>O electrolyte material are also provided.
Absstract of: US20260331630A1
0000 Systems and methods of thermal management and dimensional control of a battery system include forming ribbons to remove heat from a battery system. Battery cells are assembled in rows with each row disposed between two of the ribbons. Prior to assembling the battery cells in rows, subassemblies are formed, each of which includes one of the ribbons and one of the rows of battery cells in a pre-bonded cell row. The battery cells of each subassembly are fixed to the one of the ribbons by a first thermal interface material. Plural of the subassemblies are stacked after the battery cells of each subassembly are fixed to their respective one of the ribbons as one of the pre-bonded cell rows. The battery cells of each subassembly are secured to the ribbon of another subassembly by a second thermal interface material to form a battery module.
Absstract of: US20260331629A1
0000 A battery module uses a battery heat-dissipation device having a heat transfer member with a pulsating heat pipe into which an operating fluid is injected. The heat pipe has an I-shaped cross section including a vertical section of an evaporator member for vaporizing the operating fluid, a lower horizontal section of a first condenser member for liquefaction, and an upper horizontal section of a second condenser member. The pulsating heat pipe forms a dual refrigerant contact area with first and second coolant channels through first and second horizontal channel sections respectively positioned in the upper and lower horizontal sections. An area of a condenser portion is increased to increase a temperature difference between an evaporator portion in which a battery cell and a pulsating heat pipe are in direct contact with each other, thereby improving cooling performance.
Absstract of: US20260331724A1
The secondary battery includes an electrode stack in which a plurality of electrodes, each including an electrode active material layer coated on at least one surface of a sheet-like current collector, is stacked in a first direction with a separator interposed between the electrodes. Each of the electrodes includes an uncoated portion that includes an edge of the current collector and where the electrode active material layer is not coated. The uncoated portion includes a proximal region and a distal region. The proximal region extends in a second direction intersecting the first direction from a coated portion where the electrode active material layer is coated on the current collector. The distal region includes the edge and is bent relative to the proximal region. The distal regions of the uncoated portions respectively included in the electrodes are joined to a terminal plate such that the distal regions overlap each other.
Absstract of: US20260331569A1
0000 Electrolyte materials having the formulas Li<3>ScI<6 >or Li<5>ScI<8 >are provided, wherein the electrolyte material crystallizes in a space group selected from the group consisting of R3m, Cmmm, and C2/m. A solid-state battery comprising Li<3>ScI<6 >or Li<5>ScI<8 >electrolyte materials is provided. Methods for making Li<3>ScI<6 >or Li<5>ScI<8 >electrolyte material are also provided.
Absstract of: US20260331671A1
A battery module includes: a plurality of battery cells, each of which includes an electrode body and a battery can consisting of a rectangular case body having long side wall portions, an upper short side wall portion, and a lower short side wall portion, and a pair of lid bodies; and a restraint mechanism for restraining the battery cells, stacked with the long side wall portions adjacently arranged facing each other, from both ends in a stacking direction, and including a cooling part for cooling the battery cells by contact with the lower short side wall portions. The restraint mechanism includes a positionally-fixing part for fixing the battery cells in place in a vertical direction. The positionally-fixing part is engaged with an engagement part provided in the case body with a space between the positionally-fixing part and the engagement part in the stacking direction.
Absstract of: US20260331567A1
0000 A sulfur dioxide-based inorganic electrolyte is prepared by injecting sulfur dioxide (SO<2>) gas into an inorganic mixture. The inorganic mixture includes a lithium chloride (LiCl) powder, an aluminum chloride (AlCl<3>) powder, and a bismuth fluoride (BiF<3>) powder.
Absstract of: US20260331562A1
0000 The secondary battery includes an electrode stack in which a plurality of electrodes, each including an electrode active material layer coated on at least one surface of a current collector in the form of a sheet, is stacked in a first direction with a separator interposed between the electrodes. Each of the electrodes includes a current collecting tab that is not coated with the electrode active material layer and that protrudes in a second direction intersecting the first direction. The current collecting tab includes an insulating layer on a surface facing the first direction. The insulating layer includes a protrusion that protrudes toward the separator. The thickness of the insulating layer including the protrusion is smaller than the thickness of the electrode active material layer.
Absstract of: US20260331718A1
A battery cell includes a wound electrode assembly accommodated in a cell housing and having a can lid covering an opening at an open end of the cell housing. The can lid includes multiple electrode-coupling portions spaced apart circumferentially about a center of the can lid. The electrode-coupling portions are recessed into the can lid so as to electrically contact an electrode of the electrode assembly. Multiple radially oriented bridges and separated portions are spaced apart circumferentially about the can lid to partition the electrode-coupling portions from one another.
Absstract of: US20260331669A1
Embodiments of the present disclosure provide a heat exchange assembly, a battery apparatus, and an electric apparatus. The battery apparatus includes a casing, a heat exchange assembly, and a plurality of battery cells. The plurality of battery cells are disposed within the casing. The heat exchange assembly includes at least two heat exchange members, where at least one heat exchange member is configured as a flexible member, and at least one heat exchange member is configured as a rigid member. The flexible member has an elongation at break greater than an elongation at break of the rigid member. The flexible member and the rigid member are stacked to form at least one medium flow channel, the at least one medium flow channel is configured to conduct a heat exchange medium, and the heat exchange medium is configured to exchange heat with the plurality of battery cells.
Absstract of: WO2026221247A1
The present invention relates to a hybrid battery pack system. More specifically, the hybrid battery pack system comprises: an all-solid-state battery unit; a charging unit electrically connected to the all-solid-state battery unit, wherein the charging unit charges the all-solid-state battery unit; a load unit electrically connected to the all-solid-state battery unit; a lithium-ion battery unit electrically connected to the all-solid-state battery unit and the load unit; and a control unit controlling at least one of the all-solid-state battery unit, the charging unit, the load unit, and the lithium-ion battery unit. The hybrid battery pack system may be configured to charge the lithium-ion battery unit with an output generated from the all-solid-state battery unit.
Absstract of: US20260331683A1
0000 Disclosed are a secondary battery module and a method of manufacturing the secondary battery module. The secondary battery module includes a housing configured to accommodate secondary batteries, busbars configured to electrically connect the secondary batteries in the housing, a first cooling channel and a second cooling channel in thermal contact with the busbars and configured to absorb heat from the busbars, and a housing cover integral with the first cooling channel and the second cooling channel, and configured to cover an upper portion of the housing.
Absstract of: WO2026221313A1
The present invention relates to a battery pack comprising: at least one battery assembly including a plurality of battery cells; a pack case for accommodating the battery assembly; and a first cooling member in which a cooling medium flows and the inner surface of which is provided with a protrusion configured to protrude toward the battery assembly.
Absstract of: WO2026220375A1
: Silicon-containing anode-active materials with sulfonamide-functional-group electrolyte solvents. An electrochemical energy-storage cell includes an anode, a cathode, a porous separator disposed between the anode and the cathode, a container, and an electrolyte. The anode includes a current collector and an anode-active material in electrical communication with the current collector, wherein the anode-active material comprises silicon. The electrolyte is in contact with the anode- active material and the cathode and permeates the porous separator, and includes an alkali-metal salt and a solvent system comprising at least one solvent, wherein at least one solvent comprises a sulfonamide functional group. In some embodiments, the solvent system comprises at least one carbonate solvent and N,N-dimethyl sulfamoyl fluoride (DMSF). In some embodiments, the electrolyte forms a stabilized interphase on the anode, wherein the stabilized interphase comprises inorganic species including LiF.
Absstract of: US20260331570A1
0000 Electrolyte materials having the formulas Li<3>ScBr<6>, Li<5>ScBr<8>, or Li<4>ScBr<7 >are provided, wherein the electrolyte material crystallizes in a space group selected from the group consisting of P-31c, P312, P-31m, P1, C2/m, and R3c. A solid-state battery comprising Li<3>ScBr<6>, Li<5>ScBr<8>, or Li<4>ScBr<7 >electrolyte materials is provided. Methods for making Li<3>ScBr<6>, Li<5>ScBr<8>, and Li<4>ScBr<7 >electrolyte materials are also provided.
Absstract of: US20260328699A1
0000 The present disclosure relates to an electrode sheet inspection system, including: a carrier that carries an electrode sheet having an insulating coating portion; a measurer that measures the insulating coating portion of the electrode sheet; and a controller that analyzes an image carried from the measurer, wherein the measurer comprises: first and second lighters provided on the upper side of the electrode sheet and irradiating light onto the electrode sheet; a third lighter provided adjacent to a side of the electrode sheet and irradiating light onto the electrode sheet; and an imager provided on the upper side of the electrode sheet and imaging the electrode sheet and transmitting the image to the controller.
Absstract of: US20260326405A1
A carrying hand includes: a gripping plate made of a flat plate-like member; and gripping claws made of two or more rod members arranged parallel to each other along a plate surface of the gripping plate, wherein the carrying hand is transformable between a gripping mode in which the gripping claws are positioned in a space above the plate surface of the gripping plate and grip a stacked assembly having a positive electrode sheet, a negative electrode sheet, and a separator used for a secondary battery stacked on each other, and a retraction mode in which the gripping claws are retracted from the space above the plate surface of the gripping plate.
Absstract of: US20260331501A1
The present disclosure relates to a negative electrode active material for a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery including the negative electrode active material, and a rechargeable lithium battery including the negative electrode. The negative electrode active material includes spherical graphite and an amorphous carbon layer around (e.g., surrounding) the spherical graphite, and the negative electrode active material has a volume ratio of the total volume of pores with a diameter of 100 nm to 1000 nm to a total pore volume of 3% or less and an orientation ratio of 90 or less.
Absstract of: WO2026218381A1
A full-width measurement device, comprising: a frame (10), a first measurement unit (20), a second measurement unit (30), and reversing rollers (50). The first measurement unit (20) comprises several first measurement modules (21). The reversing rollers (50) are all mounted on the frame (10) and are located between the first measurement unit (20) and the second measurement unit (30). There is an included angle between a first measurement direction and a second measurement direction. A first detection area and a second detection area can form a continuous measurement range in the transverse direction. Not only the risk of missed detection but also the ray interference between different measurement units can be reduced.
Absstract of: WO2026219391A1
Provided are a medium-nickel polycrystalline ternary positive electrode material and a preparation method therefor, a composite positive electrode material and a preparation process therefor, and a battery. The medium-nickel polycrystalline ternary positive electrode material comprises secondary particles composed of multiple polycrystalline primary particles. The medium-nickel polycrystalline ternary positive electrode material further comprises a stabilizer. The stabilizer is not only distributed at grain boundaries inside the polycrystalline primary particles, but also coats the surfaces of the polycrystalline primary particles and the surfaces of the secondary particles. The stabilizer comprises a modifying element, the modifying element including any one of or a combination of at least two of Co, Mg, Zn, W, Al, Nb, Sr, or Ba. The medium-nickel polycrystalline ternary positive electrode material not only has a relatively high withstand voltage, but also has a relatively high gram capacity and a relatively low impedance. A battery prepared from the medium-nickel polycrystalline ternary positive electrode material not only exhibits a relatively high gram capacity and a relatively low impedance at an application voltage of greater than 4.25 V, but also exhibits excellent cycle stability.
Absstract of: WO2026221156A1
The present invention relates to an electronic device comprising a battery and an operating method thereof. The operating method of an electronic device, according to the present embodiment, may comprise the steps of: collecting sensing data from a plurality of sensors provided in the electronic device; collecting cell characteristic data for each battery cell, from a plurality of battery cells included in a battery module supplying power to the electronic device; determining whether an abnormal symptom has occurred in the battery cell, through analysis of the sensing data and the cell characteristic data; and in response to the abnormal symptom occurring in the battery cell, performing battery management by selecting one of limiting an input/output current of the battery cell and blocking the input/output current of the battery cell.
Absstract of: WO2026218061A1
The disclosure relates to an electrochemical device comprising a positive electrode, wherein the positive electrode is loaded with a layered material as an additive. Optionally, the electrochemical device comprises an electrolyte solution, the electrolyte solution comprises an ionic liquid additive, which is capable of interacting with polyiodide and/or polybromide species to mitigate shuttle effects.
Absstract of: WO2026218703A1
A solid-state battery, a urea-based binder and a preparation method therefor, and an electric device. The solid-state battery comprises a positive electrode layer, a solid-state electrolyte layer, and a negative electrode layer. The solid-state electrolyte layer is located between the positive electrode layer and the negative electrode layer. The negative electrode layer comprises a negative electrode current collector and a negative electrode active layer provided on at least one surface of the negative electrode current collector. The negative electrode active layer comprises a negative electrode active material and a urea-based binder. The negative electrode active material comprises a silicon-carbon composite material. The silicon-carbon composite material comprises a porous carbon material and a silicon material located in pores of the porous carbon material. The molecular structure of the urea-based binder comprises a urea-based group.
Absstract of: WO2026221190A1
Provided are: an electrode lead welding jig device configured to prevent jig deformation due to thermal energy generated when welding electrode leads; a battery pack using same; and a method for manufacturing same. The electrode lead welding jig device, which is configured to weld a battery cell stack having stacked therein a plurality of battery cells each including a battery case and electrode leads protruding outward from the battery case, comprises: jigs disposed to be movable between the electrode leads and the battery cases so as to prevent thermal energy for welding adjacent electrode leads of the plurality of battery cells from transferring to the plurality of battery cells through the battery case; palettes connected to the lower portions of the jigs so as to vertically move the jigs; and a base connected to the palettes so as to rotate the jigs.
Absstract of: WO2026219161A1
A positive electrode active material precursor and a preparation method therefor, a positive electrode active material, a secondary battery, and an electric device, relating to the field of sodium-ion battery positive electrode materials. The positive electrode active material precursor has a chemical formula of NawFexAyPzOm, wherein 0.60≤(x+y)/z≤0.90, 0
Absstract of: WO2026218798A1
Provided are a lithium metal battery, a negative electrode current collector, and an electric device. The lithium metal battery comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector. The negative electrode current collector comprises a current collector body and a coating applied to at least one side surface of the current collector body. The coating comprises a carbon material. The resistivity of the carbon material is greater than or equal to 0.1 Ω·m. The lithium metal battery has good cycle performance.
Absstract of: WO2026219083A1
Provided in the present application are a positive electrode material precursor, a positive electrode material, a positive electrode sheet, a battery, and an electrical device. The positive electrode material precursor comprises NaxFeyPzOm, where 0.60 ≤ y/z ≤ 0.90, 0 < x/z ≤ 0.75, and m satisfies that NaxFeyPzOm is electrically neutral. The positive electrode material precursor provided in the present application defines the iron-to-phosphorus ratio and sodium-to-phosphorus ratio, which reduces the difficulty of element diffusion when synthesizing sodium iron phosphate pyrophosphate, facilitates reducing or eliminating the formation of iron-rich or iron-deficient impurity phases in the process of synthesizing sodium iron phosphate pyrophosphate, improves the purity of sodium iron phosphate pyrophosphate, and thus increases the charge-discharge specific capacity of batteries.
Absstract of: WO2026219297A1
A negative electrode sheet, a battery, a battery pack, and an electric device. An electrochemically active specific surface area value Cdl of the negative electrode sheet ranges from 9.8 F/m2 to 60.5 F/m2. The present disclosure can increase the electrochemically active specific surface area of the negative electrode sheet while preventing excessive formation of an SEI film on the surface of the negative electrode sheet, reducing the consumption of active ions, and improving the specific capacity of the battery, thereby improving both the fast charging capacity and the energy density of the battery.
Absstract of: WO2026221651A2
A system and method includes suppling power to a utility grid with a plurality of fuel cell power plants, storing power generated by the plurality of fuel cell power plants with an energy storage system including one or more batteries, and maintaining a standby state-of-charge of the one or more batteries of the energy storage system via an energy management system. The system and method further includes generating a load request to at least one of the plurality of fuel cell power plants via the energy management system, comparing the load request to a predetermined limit; and if the load request exceeds the predetermined limit, commanding the at least one of the plurality of fuel cell power plants to ignore the load request for a predetermined amount of time.
Absstract of: US20260331721A1
0000 In the present secondary battery, a current collector is a first stack in which a plurality of metal plates are stacked, the current collector includes a first region and a second region, a positive electrode tab group is joined to the first region, a positive electrode current collection portion is joined to the second region, and the current collector is bent between the first region and the second region. According to the present secondary battery, it is possible to suppress occurrence of damage to the tab group.
Absstract of: WO2026221291A1
The present invention relates to an energy storage system enabling the expansion of battery containers and an operating method thereof. More specifically, the present invention provides: an energy storage system which is optimized by using a minimum number of PCSs and a required battery container capacity by differentiating the number of battery containers linked per PCS, and in which the expansion of additional battery containers is possible after a certain period of operation without an increase in grid connection capacity until an initial design reaches the end of life; and an energy storage system enabling the expansion of battery containers and an operating method thereof, wherein the energy storage system is operated optimally by reflecting the characteristics of the battery containers after expansion, thereby minimizing investment costs while enhancing the reliability and stability of the entire energy storage system through rearrangement of the battery containers rather than simple expansion, and providing a plan for managing the battery containers that are of different ages.
Absstract of: DE102025153352A1
Die vorliegende Erfindung offenbart ein Verfahren zur Herstellung einer Festkörperbatteriezelle, eine Festkörperbatteriezelle und eine Festkörperbatterie. Das Herstellungsverfahren für Festkörperbatteriezellen kann Folgendes umfassen: Herstellung eines Festelektrolytpulvers vom LISICON-Typ; Formen einer ersten Mischung aus Festelektrolytpulver vom LISICON-Typ und einer Weichmacherlösung zur Bildung einer primären Festelektrolytschicht; Beschichten einer Seite der primären Festelektrolytschicht mit einer zweiten Mischung aus Festelektrolytpulver vom LISICON-Typ und positivem Elektrodenmaterial und Sintern zur Gewinnung einer integralen Festelektrolytschicht und positiven Elektrodenschicht. Die mit diesem Verfahren hergestellte Festkörperbatteriezelle kann wirksam die Grenzflächenimpedanz zwischen dem Festkörperelektrolyten und der positiven Elektrode verringern, um die elektrischen Eigenschaften der Festkörperbatteriezelle zu verbessern.
Absstract of: US20260331637A1
0000 A thermal management component, a battery, and an electric device are provided. The thermal management component includes a liquid inlet flow channel, a first main flow channel, a second main flow channel, and first and second groups of branch flow channels. The first group connects the liquid inlet flow channel to the first main flow channel, and the second group connects the liquid inlet flow channel to the second main flow channel. The second group is located downstream of the first group along a coolant flow direction, and a total cross-sectional area of the second group is greater than a total cross-sectional area of the first group. The arrangement improves coolant distribution among flow paths and enhances thermal management performance.
Absstract of: WO2026221867A1
A system may include a battery to operate a motor of a work machine, a sensor to measure an electrical property of the battery, an energy-dissipation device on the work machine and electrically connected to the battery, and a controller. The controller may detect that a charging connection point of the work machine is connected to a charger, initiate a performance test for the battery while the battery is connected to the work machine, cause charging of the battery to an upper level, cause discharging of the battery to a lower level using the energy-dissipation device to obtain, from the sensor, discharge data indicating the electrical property during discharging of the battery, cause charging of the battery back to the upper level to obtain, from the sensor, charge data indicating the electrical property during charging of the battery, determine a battery capacity, and output information indicating the battery capacity.
Absstract of: WO2026219362A1
The present disclosure provides a lithium-ion secondary battery, an electric device, and a positive electrode material. The lithium-ion secondary battery comprises a positive electrode sheet; the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on at least one side of the positive electrode current collector and comprising the positive electrode material; the positive electrode material comprises a lithium transition metal oxide; the lithium transition metal oxide comprises nickel, cobalt, and an element M; the element M comprises manganese and/or aluminum; on the basis of the total molar amount of nickel, cobalt, and the element M, the molar percentage of nickel is 50% or more and less than 100%; the lithium transition metal oxide comprises primary particles having a particle size of 0.5 μm to 6 μm; and on the basis of the total number of the primary particles having a particle size of 0.5 μm to 6 μm, primary particles having a particle size of 0.5 μm to 2 μm account for 86% to 93%.
Absstract of: WO2026219277A1
The present application relates to the technical field of energy storage cabinets. Provided are a cabinet, an energy storage cabinet, an energy storage system and an electric device. The cabinet comprises a housing, wherein the housing comprises a plurality of modular structures, the plurality of modular structures being adapted to enclose an energy storage module externally. The embodiments of the present application can simplify the structure of the energy storage cabinet and improve the assembly flexibility of the energy storage cabinet.
Absstract of: WO2026218715A1
The present disclosure relates to the technical field of batteries. Provided are a battery apparatus and an electric device. The battery apparatus comprises a case, at least two battery cells, and a heat exchange assembly. The case has a top cover. The at least two battery cells are located within the case. The heat exchange assembly is disposed on the top side of the at least two battery cells. The heat exchange assembly comprises at least two heat exchange members; at least one heat exchange member is configured as a flexible member, and at least one heat exchange member is configured as a rigid member; the flexible member and the rigid member are stacked to form a medium flow channel, the medium flow channel is adapted for flow-through of a heat exchange medium, the heat exchange medium being used for exchanging heat with the at least two battery cells. The heat exchange assembly is integrated into the top cover. By integrating the heat exchange assembly into the top cover, the heat exchange assembly being connected to the top cover or the heat exchange assembly being part of the top cover, the top cover can provide support for the heat exchange assembly, helping improve the overall structural strength and stability of the battery apparatus.
Absstract of: AU2025253958A1
An electrical connector (100) for the high voltage electrical connection (106) of electrical cables (104) to a battery pack (102) can be selectively configured to align the electrical cables (104) in multiple directions. The electrical connector (100) includes a box frame (126) mountable to the battery pack (102) and having one or more frame faces (170) with an access opening (180) therein that accesses a terminal receiving cavity (128) of the box frame (126). A cable receiving housing (124) is attachable to the frame face (170) and configured to align and direct the electrical cables (106) to the terminal receiving cavity (128). A cover plate (136) may be used to cover the access opening (180) in the others frame faces (170).
Absstract of: WO2026218905A1
Provided in the present application are a secondary battery and an electric device. The secondary battery provided in the present application comprises a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode current collector, a first negative electrode active material layer provided on at least one surface of the negative electrode current collector, and a second negative electrode active material layer provided on the first negative electrode active material layer. The negative electrode sheet satisfies the condition that the gas production of the first negative electrode active material layer is greater than that of the second negative electrode active material layer, which helps to reduce a difference in surface tension between the first negative electrode active material layer and the second negative electrode active material layer, thereby improving the cycle performance of the secondary battery, enhancing the interfacial bonding strength between the first negative electrode active material layer and the second negative electrode active material layer, mitigating the powder shedding of the negative electrode sheet while ensuring the fast charging performance of the secondary battery, and also improving the electrochemical performance of the secondary battery.
Absstract of: WO2026219386A1
The present application relates to the technical field of batteries, and discloses a battery and a battery pack. The battery comprises: a case structure comprising a first side wall, a second side wall, a third side wall, a fourth side wall, a first blocking portion, and a second blocking portion; the length of the case structure is L, the thickness of the first side wall is I1, and the thickness of the second side wall is I2; the width of the case structure is T, the thickness of the third side wall is M1, and the thickness of the fourth side wall is M2; the height of the case structure is H, the thickness of the first blocking portion is a, and the thickness of the second blocking portion is b; and the capacity of the battery is C, and satisfies Formula (I), wherein 5 mm≤x≤8 mm, and 5 mm≤y≤10 mm. In the present application, the capacity of the battery is calculated on the basis of the structural size of the case structure, thereby simplifying battery capacity calculation, facilitating overall battery design, and improving design efficiency.
Absstract of: US20260326328A1
0000 A cutting device for a composite electrode plate and a battery production line belong to the technical field of processing device. The cutting device for a composite electrode plate includes: a rack; a composite mechanism mounted on the rack and configured to cooperate with an adsorption mechanism to composite a separator and an electrode plate to obtain a composite electrode plate; the adsorption mechanism mounted on the rack and configured to adsorb the composite electrode plate; and a cutting mechanism mounted on the rack and configured to cooperate with the adsorption mechanism to cut off the composite electrode plate.
Absstract of: US20260331469A1
A positive electrode sheet comprises: a positive electrode current collector; a first positive electrode active material film layer disposed on at least one side of the positive electrode current collector, the first positive electrode active material film layer comprising solid first positive electrode active material particles; and a second positive electrode active material film layer disposed between the first positive electrode active material film layer and the positive electrode current collector, the second positive electrode active material film layer comprising second positive electrode active material particles having a hollow structure.
Absstract of: WO2026218714A1
Provided in the embodiments of the present disclosure are a heat exchange assembly, a battery apparatus and an electric device. The battery apparatus comprises a box, a plurality of battery cells and a heat exchange assembly. The plurality of battery cells are arranged in the box; the heat exchange assembly comprises at least two heat exchange members, wherein at least one heat exchange member is configured as a flexible member, at least one heat exchange member is configured as a rigid member, and the flexible member and the rigid member are stacked to form at least one medium flow channel; and the heat exchange assembly is in contact with terminal-post sides of the battery cells. In the battery apparatus provided in the embodiments of the present disclosure, the heat exchange assembly is in contact with the terminal-post sides of the battery cells, such that the terminal-post sides of the battery cells can be preferentially cooled, and the temperature difference of the battery cells in a longitudinal direction is reduced as much as possible, thereby achieving a better heat exchange effect. In addition, the heat exchange assembly comprises the flexible member, which helps to reduce the weight and improve the energy density of the battery apparatus.
Absstract of: WO2026221198A1
The present invention relates to an electrolyte injection apparatus for injecting an electrolyte into a battery case in which an electrode assembly is accommodated, the electrolyte injection apparatus comprising: an electrolyte supply unit for supplying the electrolyte; and an atomized electrolyte injection unit that atomizes the electrolyte supplied by the electrolyte supply unit and injects the atomized electrolyte into the battery case.
Absstract of: WO2026220808A1
This information processing device executes a molecular dynamics simulation capable of modeling chemical reactions in an atomic model representing the states of a plurality of atoms present on the surface of a solid material, uses a result of executing the molecular dynamics simulation as a basis for calculating a formation speed of one or more chemical species formed from the atomic model as a result of a chemical reaction, and outputs formation speed information indicating the calculated formation speed.
Absstract of: WO2026221421A1
The present invention relates to a cathode active material, and a cathode and a lithium secondary battery comprising the cathode active material, wherein the cathode active material comprises lithium transition metal oxide particles in a single-particle form, and, in a log-scale cumulative volume particle size distribution graph in which the X-axis represents the particle size of the lithium transition metal oxide (unit: μm) and the Y-axis represents the volume percentage (unit: %), the sum of the coefficient of variation of a nickel content (mol%) relative to the total content of transition metals and the coefficient of variation of a manganese content (mol%) relative to the total content of transition metals that are calculated for the particles in the area having a cumulative volume of 0% to 10% is 1.05 to 1.70.
Absstract of: WO2026220605A1
According to an embodiment, provided is an electrode including a current collector and an active material-containing layer formed on at least one surface of the current collector. The active material-containing layer includes an active material containing a niobium-containing oxide. Furthermore, the active material-containing layer has a moisture content of 250 to 660 mass ppm, inclusive.
Absstract of: US20260328852A1
Methods and systems for determining a status of an electrochemical energy storage device is provided. An impedance profile of an electrochemical energy storage device is determined using an Electrochemical Impedance Spectroscopy (EIS) device. The determined impedance profile is compared with a predetermined impedance profile. A status of the electrochemical energy storage device is determined based on the comparison.
Absstract of: US20260331735A1
A battery cell comprises: an electrode assembly; and an insulating component, wherein the insulating component is configured to wrap at least a partial region of the electrode assembly; the insulating component comprises a first insulating structure and a second insulating structure, the first insulating structure is a hollow structure with one end open, the hollow structure being configured to accommodate the electrode assembly, and the second insulating structure is configured to cover an opening of the first insulating structure.
Absstract of: US20260331716A1
A battery module and a method of manufacturing the same, are capable of improving the stability of mechanical and electrical connections. The battery module includes a housing, a battery cell disposed inside the housing, a first bus bar connected to the battery cell and including a first conductive material connected to the first bus bar and a module bus bar. The second bus bar includes a second conductive material that is different than the first conductive material.
Absstract of: US20260331586A1
0000 Electrolyte compositions include: at least one electrolyte salt of a metal selected from the group consisting of an alkali metal, an alkaline earth metal, zinc, aluminum, and any combination thereof; and a solvent mixture configured to solubilize the at least one electrolyte salt. The solvent mixture includes: (A) a cyclic sulfone and a partially fluorinated sulfonamide; (B) a cyclic sulfone, a partially fluorinated sulfonamide, and about 10 weight percent (wt. %) or less of an ether selected from the group consisting of a cyclic ether, a glyme, and any combination thereof, based on a total weight of the cyclic sulfone, the partially fluorinated sulfonamide, and the ether; or (C) a partially fluorinated sulfonamide and up to about 50 wt. % of an ether selected from the group consisting of a cyclic ether, a glyme, and any combination thereof, based on a total weight of the partially fluorinated sulfonamide and the ether.
Absstract of: WO2026221056A1
The purpose of the present invention is to achieve both blocking resistance and powder dropping resistance while preventing the reduction of lithium ion permeability. The present invention comprises polymer particles and a dispersant. The polymer particles have a core-shell structure. Shell parts of the polymer particles each contain an acid group-containing monomer as a constitutional unit. The content of the dispersant is 2-18 parts by mass with respect to 100 parts by mass of monomers constituting the polymer particles. The proportion of core parts in 100 mass% of the total amount of the core parts and the shell parts of the polymer particles is 30-80 mass%. The average particle diameter D50 of the polymer particles is 300-1,500 nm, where the average particle diameter D50 is a particle diameter at which cumulative 50% in a volume-based particle size distribution measured by a laser diffraction and scattering method is achieved. The monomers constituting the polymer particles are (meth)acrylic acid alkyl ester monomers or mixtures of (meth)acrylic acid alkyl ester monomers and aromatic vinyl monomers.
Absstract of: US20260327083A1
0000 An aerogel composite which maintains a high degree of hydrophobicity, and also an excellent level of heat insulation properties even when exposed to a high-temperature environment.
Absstract of: WO2026221362A1
The present specification relates to a positive electrode active material, and a positive electrode and a lithium secondary battery comprising same, the positive electrode active material comprising: a lithium transition metal compound having an olivine structure; and a lithium transition metal compound having a layered structure, wherein the value calculated by mathematical formula 1 is 14% or less.
Absstract of: WO2026218718A1
A battery cell, a battery device, an electric device, and a method for preparing a battery cell. The battery cell comprises a negative electrode sheet, wherein the negative electrode sheet comprises a current collector and a negative electrode active material layer which are stacked; the negative electrode active material layer comprises negative electrode active material particles and a first electrically conductive agent; the negative electrode active material particles comprise graphite particles; the first electrically conductive agent comprises first carbon nanotubes distributed among the graphite particles and second carbon nanotubes distributed on the surfaces of the graphite particles; the tortuosity δb of the first carbon nanotubes is 0-0.3; and the tortuosity δb is defined as δb=(L1-h1)/L1, where L1 is the length of the first carbon nanotube having two ends respectively connected to two graphite particles, and h1 is the straight-line distance between the two ends of the first carbon nanotube respectively connected to the two graphite particles. Thus, the rebound rate of the negative electrode plate and the expansion force of the battery cell can be reduced, so as to improve the cycle performance of the battery cell.
Absstract of: WO2026218226A1
The present application relates to a battery apparatus and an electrical apparatus. The battery apparatus comprises: a box body, a battery chamber being provided in the box body, the battery chamber comprising a first battery chamber and a second battery chamber, and a partition structure being provided between the first battery chamber and the second battery chamber; a first battery pack, disposed in the first battery chamber, the first battery pack comprising a plurality of first battery cells; and a second battery pack, disposed in the second battery chamber, the second battery pack comprising a plurality of second battery cells. The partition structure can block at least some of emissions released by at least one of the first battery cells and the second battery cells in a case of thermal runaway. The battery apparatus provided in the embodiments of the present application effectively improves reliability.
Absstract of: WO2026219265A1
The present application provides a battery, a battery pack, and an electric device. The battery comprises a heat-absorbing assembly and battery cell groups arranged on at least one side of the heat-absorbing assembly. Each battery cell group comprises battery cells. The heat-absorbing assembly comprises a heat-absorbing composite material and a housing provided outside the heat-absorbing composite material; and the heat-absorbing composite material comprises a support layer and a heat-absorbing material provided on the support layer.
Absstract of: US20260331733A1
0000 The present disclosure discloses a battery including a battery cell, a protection board, and a potting member, where the battery cell includes an electrode assembly and a film casing, and the battery cell has a top end surface and side end surfaces. The film casing is provided with a first groove and a second groove. The film casing is provided with a top sealing edge including a first straight portion and a first bent portion. The protection board is connected to a top end of the battery cell along a height direction, and the protection board includes a protection board body and a connecting terminal. The potting member covers an outer peripheral portion of the protection board and exposes at least a portion of a side surface of the protection board body on the same side as the shallow recessed surface.
Absstract of: WO2026219275A1
A modified binder and a preparation method therefor, an electrolyte membrane, a solid-state battery, a battery pack, and an electric device. The modified binder is one or more of nitrile rubber derivatives; and the molecular side chains of the modified binder include carboxyl groups and ammonium groups.
Absstract of: US20260331476A1
0000 A battery includes a cathode current collector, a cathode layer, an electrolyte layer, an anode layer, and an anode current collector in the stated order in a thickness direction. The anode layer contains at least one of a Si-based active material and a Sn-based active material. When a thickness of the anode layer is T, a region of the anode layer at a distance of 0T or more and 0.33T or less from an end of the anode layer near the electrolyte layer in the thickness direction is a first region, and a region of the anode layer at a distance of 0.66T or more and 1.0T or less is a second region, and when a porosity of the first region and a porosity of the second region are X and Y, respectively, X is more than Y, and X is 15% or more and 35% or less.
Absstract of: US20260331705A1
0000 An electrode assembly includes a plurality of electrode laminates stacked along a first direction. Each of the electrode laminates includes a plurality of electrode sheets stacked along the first direction, and a long separator extending in a zigzag pattern between the electrode sheets. A binding portion that surrounds the electrode laminates together is provided integrally with the separator of one of the electrode laminates.
Absstract of: US20260331518A1
0000 The present disclosure addresses the issue described above by providing a cathode composite material containing a cathode active material, a sulfide solid electrolyte, and a binder, in which: the sulfide solid electrolyte has an LGPS crystalline phase; and a weight average molecular weight of the binder is 500,000 or more.
Absstract of: US20260331472A1
A method can include: receiving an electroactive metal; comminuting the electroactive metal; optionally comminuting a salt; optionally processing battery components; and optionally assembling a battery. The method preferably functions to process an electroactive metal used for producing active material for metal conversion batteries, molten salt batteries, or sodium metal halide batteries. The battery can include a housing, electrodes (e.g., cathode, anode, etc.) electrolyte (e.g., solid electrolyte, secondary electrolyte, etc.), separator, and/or any suitable materials and/or components. The electrodes can be made from a mixture of particles of a brittle iron alloy and a salt.
Absstract of: WO2026221059A1
A non-aqueous electrolyte secondary battery according to an embodiment of the present disclosure comprises: an electrode group that includes a positive electrode, a negative electrode, and a separator that is between the positive electrode and the negative electrode; and a non-aqueous electrolyte. A protective layer that includes a polymer is provided to the surface of the negative electrode, and the non-aqueous electrolyte includes a cyclic imide compound, the cyclic imide compound content of the non-aqueous electrolyte being no more than 100 ppm.
Absstract of: US20260326619A1
Disclosed are a method of controlling a hydrogen electric vehicle and an apparatus therefor. The hydrogen electric vehicle is equipped with a hydrogen storage system and a fuel cell system. The method includes charging a battery by consuming a hydrogen fuel through an operation of the fuel cell system based on an ignition off command for the vehicle being input, and controlling an ignition off of the vehicle based on the charging of the battery being completed.
Absstract of: WO2026221459A1
The present specification provides a positive electrode active material, a method for preparing same, and a positive electrode and a lithium secondary battery comprising same, the positive electrode active material comprising a lithium iron phosphate-based compound, wherein a value calculated using mathematical expression |Dx-(D10+D50)/2| is 0.06-0.5 inclusive. In the mathematical expression, Dx is the average particle size (unit: μm) of the lithium iron phosphate-based compound measured from a scanning electron microscope image, D10 is the particle size (unit: μm) of the lithium iron phosphate-based compound at which the cumulative volume ratio is 10% in the volume-based cumulative particle size distribution curve obtained by laser diffraction particle size distribution measurement, and D50 is the particle size (unit: μm) of the lithium iron phosphate-based compound at which the cumulative volume ratio is 50% in the volume-based cumulative particle size distribution curve obtained by laser diffraction particle size distribution measurement.
Absstract of: WO2026220471A1
In this electrode layer forming method, a second liquid having a lower binder component concentration than a first liquid is applied to a surface of a current collector foil to form a liquid layer on the surface, a powder of an active material is supplied onto the liquid layer to form a powder layer on the surface, and the first liquid is applied onto the powder layer.
Absstract of: WO2026221422A1
The present invention relates to a positive electrode material comprising lithium transition metal oxide particles having a single particle form, wherein the coefficient of variation of the cobalt content (mol%) relative to the total transition metals measured for the lithium transition metal oxide particles having a particle diameter of D10 or smaller is 0.30 to 0.75, the particle diameter meaning the diameter of a circle having the same area as a lithium transition metal oxide particle separated on the basis of a particle boundary in a SEM image (equivalent circular diameter (ECD)), and D10 being the particle diameter corresponding to the cumulative volume of 10% on a volume cumulative particle size distribution graph obtained on the basis of the particle diameter.
Absstract of: WO2026218792A1
A sulfide solid-state electrolyte and a preparation method therefor, a battery, and an electric device, relating to the field of batteries. The sulfide solid-state electrolyte comprises halogen. In a crystal structure of the sulfide solid-state electrolyte, the proportion of halogen atoms occupying a Wyckoff 4d site relative to the total number of halogen atoms in the sulfide electrolyte is 0.20 to 0.40. In the present application, the proportion of the halogen atoms occupying the Wyckoff 4d site in the sulfide solid-state electrolyte relative to the total number of the halogen atoms in the sulfide electrolyte is controlled to be greater than or equal to 0.2 and less than or equal to 0.4, thereby improving the ionic conductivity of the sulfide solid-state electrolyte.
Absstract of: WO2026219786A1
The present invention relates to an energy storage module (100), in particular a battery module, comprising a housing (102), a fluid inlet (116) into the housing, a fluid outlet (118) out of the housing, a fluid distribution channel (152) which is connected to the fluid inlet (116), a fluid collection channel (154) which is connected to the fluid outlet (118), a plurality of energy storage elements (106) and at least one temperature control chamber (124) in which the energy storage elements (106) extend at least partially, - wherein the energy storage elements (106) are arranged in a regular arrangement (130) which has a plurality of gaps (132) in an edge region (134) facing the fluid distribution channel (152), and/or in an edge region (134) facing the fluid collection channel (154), - wherein the fluid distribution channel (152) has one or more projections (160) which extend at least partially into the gaps (132), and the fluid distribution channel (152) has one or more fluid inlet openings (156) which are arranged in or on the projection(s) (160), and/or - wherein the fluid collection channel (154) has one or more projections (160) which extend at least partially into the gaps (132), and the fluid collection channel (154) has one or more fluid outlet openings (157) which are arranged in or on the projection(s) (160). The present invention also relates to an energy storage device having at least one energy storage module (100).
Absstract of: US20260331600A1
An electrolyte for a lithium metal battery includes a lithium salt, and a non-aqueous organic solvent. The non-aqueous organic solvent includes a main solvent and a co-solvent. The main solvent includes N,N-dimethylsulfamoyl fluoride, ethylene carbonate, diethyl carbonate, dimethyl carbonate, ethylmethyl carbonate, 1,2-dimethoxyether, dipropyl ether, cyclic sulfonamide, or any combination thereof. The co-solvent is represented by Chemical Formula 1, and the co-solvent is included in an amount exceeding 1 mol % based on a total amount (100 mol %) of the non-aqueous organic solvent.In Chemical Formula 1, each substituent is the same as defined in the detailed description.
Absstract of: WO2026219267A1
A positive electrode sheet, a battery, a battery pack, and an electric device. The positive electrode sheet comprises a positive electrode current collector, and a first positive electrode active layer and a second positive electrode active layer stacked on at least one side of the positive electrode current collector, wherein the first positive electrode active layer comprises a first positive electrode active material, and the second positive electrode active layer comprises the first positive electrode active material and a second positive electrode active material; the first positive electrode active material comprises at least one of a manganese-based positive electrode active material, an iron-based positive electrode active material and a manganese-iron mixed positive electrode active material; the second positive electrode active material comprises at least one of a ternary positive electrode active material, lithium cobalt oxides, lithium nickel oxides and lithium titanium oxides; and the second positive electrode active layer further comprises a second conductive agent, and the second conductive agent comprises at least two linear conductive agents, and at least one of a sheet-shaped conductive agent and a dot-shaped conductive agent. The positive electrode sheet has a special structure and composition, and thus can effectively ameliorate the impedance growth of a battery and improve the cycle performance thereof.
Absstract of: WO2026218794A1
A positive electrode composite material, a positive electrode sheet, a battery, a battery pack, and an electric device. The positive electrode composite material comprises a positive electrode active material and a shell layer present on at least part of the surface of the positive electrode active material. The shell layer comprises carbon nanotubes. The average tube diameter of the carbon nanotubes is less than or equal to 100 nm.
Absstract of: WO2026219148A1
Provided in the present application are a battery separator, a battery, and an electric device. The battery separator comprises a base membrane and a polymer adhesive material arranged on at least one side of the surfaces of the base membrane. The swelling rate of the polymer adhesive material in an electrolyte is less than 15%.
Absstract of: WO2026219032A1
An electrode plate, a preparation method therefor, a battery, and an electrical device, relating to the technical field of batteries. Active material particles in an electrode plate active material layer comprise first particles and second particles, the Dmin of the first particles being greater than the Dmax of the second particles. A first pore p1 formed between each first particle and another first particle, a second pore p2 formed between each first particle and a second particle, and a third pore p3 formed between each second particle and another second particle satisfy: formula (aa), where V is the pore volume.
Absstract of: US20260331734A1
0000 A secondary battery capable of reducing a risk of damage to a separator includes an electrode assembly and a current collector. The current collector includes a current collecting unit and a pole unit, where the pole unit includes a support portion coupled to an end of a current collecting protrusion. The support portion has a greater cross-sectional area than the current collecting protrusion and is accommodated in an opening of a plate of the current collecting unit. A stopper having an upper surface spaced above the plate of the current collecting unit may be positioned adjacent to the current collecting protrusion of the pole unit.
Absstract of: WO2026219071A1
A battery, a battery pack and an electric apparatus. The battery comprises a heat-absorbing assembly and a battery cell group located on at least one side of the heat-absorbing assembly, wherein the battery cell group comprises battery cells; the heat-absorbing assembly comprises a housing and a heat-absorbing composite material located in a cavity enclosed by the housing, the heat-absorbing composite material comprising a support layer and a heat-absorbing material disposed on the support layer; the heat-absorbing material includes a phase-change material; and the support layer comprises at least one layer of support units stacked in a first direction of the heat-absorbing composite material, the first direction being the arrangement direction of the heat-absorbing assembly and the battery cell group located on at least one side of the heat-absorbing assembly.
Absstract of: WO2026218297A1
Provided are a battery cell, a battery device, an electric device, and an energy storage device. A positive electrode sheet of the battery cell comprises a positive electrode current collector and a positive electrode film layer provided on at least one side of the positive electrode current collector, wherein the positive electrode film layer comprises first-type particles and second-type particles, the first-type particles and the second-type particles comprise a lithium-containing transition metal phosphate material, the primary particle size of the first-type particles being greater than or equal to 50 nm and less than or equal to 180 nm, the primary particle size of the second-type particles being greater than 180 nm and less than 900 nm, and the average molar proportion of Mn in the first-type particles being less than the average molar proportion of Mn in the second-type particles. An electrolyte of the battery cell comprises an organic solvent, an electrolyte salt, and a first additive, wherein the first additive comprises a cyclic carbonate additive, the cyclic carbonate additive comprising one or more compounds having the structures represented by Formula I and Formula II, and on the basis of the total mass of the electrolyte, the first additive is present in an amount of 1% to 20% by mass.
Absstract of: WO2026220806A1
Provided is a lead-acid battery in which a difference in formation efficiency between a positive electrode plate and a negative electrode plate is reduced by increasing the formation efficiency of the positive electrode plate, thereby reducing the formation charge required for formation to proceed sufficiently. The lead-acid battery comprises an electrode plate group and an electrolyte solution. The electrode plate group has a laminate comprising a plurality of positive electrode plates (10) and negative electrode plates (20) arranged alternately, and separators (30) arranged between the positive electrode plates and the negative electrode plates. The positive electrode plate (10) has a positive electrode current collector plate (101) and a positive electrode mixture (102) held in a lattice-shaped part (101a) of the positive electrode current collector plate (101). The negative electrode plate (20) has a negative electrode current collector plate (201) and a negative electrode mixture (202) held in a lattice-shaped part (201a) of the negative electrode current collector plate (201). The thickness of the positive electrode current collector plate (101) is smaller than the thickness of the negative electrode current collector plate (201).
Absstract of: WO2026218705A1
A battery cell, a battery apparatus, and an electric device, relating to the technical field of batteries. The battery cell comprises: a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on at least one side surface of the positive electrode current collector, the positive electrode film layer comprises a positive electrode active material, and the positive electrode active material comprises a lithium-containing phosphate; a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer arranged on at least one side surface of the negative electrode current collector, the negative electrode film layer comprises a negative electrode active material, the negative electrode active material comprises a silicon-based material, and the negative electrode film layer has a single-sided areal density of 100 mg/1540.25 mm2 to 200 mg/1540.25 mm2; and a separator, wherein the separator is arranged between the positive electrode sheet and the negative electrode sheet, and the air permeability G of the separator satisfies: 75 s≤G≤210 s. The battery can achieve relatively high energy density, relatively good fast charging performance, and relatively high reliability simultaneously.
Absstract of: DE102025115491A1
Die Erfindung betrifft ein KI-gestütztes Energiemanagementsystem (2) für ein Niedervoltbordnetz eines Fahrzeugs (1). Es umfasst als Softwareagenten (LMA, PCA, SOA, SA) einen Lastmanagementagenten (LMA) zur Priorisierung kritischer Systeme, einen prädiktiven Ladeagenten (PCA) zur Optimierung von Batterieladezyklen einer Niedervoltbatterie, einen Standby-Optimierungsagenten (SOA) zur Minimierung eines Energieverbrauchs beim Parken und einen Aufsichtsagenten (SA) zur Koordinierung einer Energieverteilung auf der Grundlage von Fahrprofilen und Umgebungsbedingungen (UB). Durch den Einsatz von maschinellem Lernen und Echtzeit-Fahrzeugdaten erhöht das Energiemanagementsystem (2) die Lebensdauer der Niedervoltbatterie, reduziert den Stromverbrauch im Standby-Modus und optimiert die Energieeffizienz.Des Weiteren betrifft die Erfindung ein Fahrzeug (1) und ein Energiemanagementverfahren für ein Fahrzeug (1).
Absstract of: WO2026221243A1
Disclosed is a nanofiber for a lithium-sulfur battery, which enhances the electrochemical performance of the lithium-sulfur battery. Provided according to one aspect is a nanofiber for a lithium-sulfur battery, which comprises a carbon nanofiber skeleton.
Absstract of: WO2026218228A1
The present application relates to the technical field of batteries, and specifically relates to a battery system and an electric apparatus. The battery system of the present application comprises a first battery pack and a second battery pack, wherein the first battery pack comprises a plurality of first battery cells, the second battery pack comprises a plurality of second battery cells, the first battery cells and the second battery cells are of different chemical systems, and the volumetric energy density VED1 of the first battery cells and the volumetric energy density VED2 of the second battery cells satisfy: VED2>VED1; and the first battery pack and the second battery pack are electrically connected by means of a voltage conversion circuit, and the second battery pack can charge the first battery pack by means of the voltage conversion circuit. The battery system provided in the present application may have good endurance performance across multiple application scenarios.
Absstract of: WO2026222105A1
An electrode-separator assembly includes: an electrode assembly; and a separator. The electrode assembly includes: a conductive substrate coated with electrode material; a first face; a second face opposite the first face; a first end defining a first serrated geometry; a second end opposite the first end and defining a second serrated geometry; a first side extending between the first end and the second end; and a second side opposite the first side. The separator includes a conformal separator coating and extends continuously: across the first face and the second face of the first electrode assembly; around the first side and the second side of the first electrode assembly; and around proximal resected regions on the first end and the second end of the first electrode assembly.
Absstract of: WO2026218507A1
Provided in the embodiments of the present application is a battery transport protection device. The battery transport protection device comprises a case body, measurement members and a fire-fighting mechanism. The case body has a first accommodating cavity used for accommodating batteries. The measurement members are arranged in the case body, and are used for measuring environmental parameters in the first accommodating cavity. The fire-fighting mechanism is arranged in the case body, and is used for releasing a fire-fighting medium to the first accommodating cavity when the environmental parameters exceed threshold values. The measurement members are provided to measure the environmental parameters in the first accommodating cavity, and when the environmental parameters measured by the measurement members exceed the threshold values, the fire-fighting mechanism releases the fire-fighting medium to the first accommodating cavity, so as to perform firefighting (fire extinguishing, cooling, etc.) on the batteries, thus reducing the risk of loss (casualties, property loss) caused by battery fires, and helping to improve the reliability of the battery transport protection device during battery transportation.
Absstract of: WO2026218506A1
A battery transport protection device (1), comprising a case (10). The case (10) comprises a case cover (12) and a case body (13). The case body (13) is provided with a first opening (133), and the case cover (12) covers the first opening (133) to define, together with the case body (13), a first accommodating cavity (11) for accommodating a battery. A pressure relief channel (121) is formed inside the case cover (12), and the pressure relief channel (121) is communicated with the first accommodating cavity (11) and is used for discharging gas from the first accommodating cavity (11).
Absstract of: US20260331689A1
A battery container including a case, the case including a front panel having an opening, the case defining a space therein, a plurality of battery cells located in the space, and a cover configured to open and close the opening.
Absstract of: DE102025115014A1
Vorrichtung (1) zur Abtrennung von mindestens zwei separierbaren Batteriemodulen (4, 5, 6, 7) einer Batterie (2) eines Fahrzeugs (3) im Falle eines Batteriebrandes, umfassend die mindestens zwei separierbaren Batteriemodule (4, 5, 6, 7) der Batterie (2), die entlang einer Führung (8) beweglich gelagert sind, eine Erkennungseinheit (9) zur Detektion eines thermischen Ereignisses in einem Batteriemodul (4, 5, 6, 7), eine Auswurfeinrichtung (12), die geeignet ist, mindestens eines der Batteriemodule (4, 5, 6, 7) durch eine seitliche Öffnung (13) aus dem Fahrzeug (3) zu schleudern, eine Fahrzeugstruktur (16) mit einer durchstoßbaren Ausstoßzone (14), die im Falle der Aktivierung der Auswurfeinrichtung (12) nachgibt, und eine Steuerungseinheit (11) zur Ansteuerung der Auswurfeinrichtung (12) in Abhängigkeit eines detektierten Batteriebrandereignisses.
Absstract of: WO2026218719A1
An oxyhalide solid-state electrolyte and a preparation method therefor, a solid-state battery cell, a battery device, and an electric device. The general formula of the oxyhalide solid-state electrolyte is LiaAlmXnYbOc, wherein X includes a trivalent metal element other than Al, Y includes a halogen, 0
Absstract of: WO2026221309A1
The present disclosure provides an electrode assembly and a secondary battery comprising the electrode assembly. The electrode assembly according to the present disclosure comprises: a first electrode; a second electrode; and a separator interposed between the first electrode and the second electrode, wherein: the first electrode, the second electrode, and the separator are wound around a core portion; the first electrode includes a mixture portion in which a first active material is coated on a first electrode substrate, and an uncoated portion in which the first active material is not coated on the first electrode substrate; at least a portion of the uncoated portion includes a segment in which a heat insulating layer is embedded; and the heat insulating layer may be disposed at a position corresponding to the separator.
Absstract of: US20260331936A1
0000 A dynamic multi-phase defined pattern charging (DDPC) system and method for optimizing the charging of rechargeable battery cells and battery systems. The invention applies a predefined, repeatable charge pattern such as square, ramped square, sinusoidal, tangential, sawtooth, or phase-shifted dual-source forms to each charging phase, while dynamically adjusting offset, amplitude, and duty cycle parameters based on real-time feedback from voltage, current, temperature, and impedance measurements. Unlike conventional adaptive charging, which continuously varies current and treats the resulting profile as a shifting waveform, the DDPC approach uses fixed-shape patterns and adjusts only offset, amplitude, and duty cycle. This preserves pattern stability, improves repeatability, and enhances electrochemical predictability. The system supports single-source, dual-source, and multi-source configurations, and can switch patterns during charging to enhance SEI formation, reduce thermal stress, or accelerate completion. Applicable to manufacturing formation lines, in-field optimization, and ultra-fast charging scenarios.
Absstract of: WO2026219351A1
Provided in the present disclosure are a lithium-ion secondary battery, an electric device and a positive electrode material. The lithium-ion secondary battery comprises a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer that is located on at least one side of the positive electrode current collector and comprises a positive electrode material, the positive electrode material comprising a lithium transition metal oxide which comprises secondary particles formed by a plurality of primary particles having a particle size of 0.2-1 μm. The lithium transition metal oxide comprises nickel, cobalt and manganese, wherein on the basis of the total moles of nickel, cobalt and manganese, the molar percentage of nickel is greater than or equal to 50% and less than 100%, and the molar percentage of manganese is greater than or equal to that of cobalt. The lithium transition metal oxide further comprises a modifying element which is one or more of zirconium, yttrium, sodium, potassium, phosphorus, antimony, aluminum, titanium, boron, tungsten and carbon. At 100% SOC, the oxygen release temperature of the positive electrode sheet as determined by thermogravimetry-mass spectrometry is 210-230°C.
Absstract of: WO2026222358A1
Micro-thin battery cells, having a metal case, enable high-capacity and high- energy batteries for applications such as wearable sensors and tracking sensors. The micro-thin cell uses its case as a terminal and current collector for an electrode, enabling a cell shape that requires only a single electrode tab which connects another electrode of the battery cell.
Absstract of: WO2026219313A1
A polyimide binder, an electrode sheet, a battery, a battery pack, and an electric device. The polyimide binder comprises an aromatic hard segment and a polyester soft segment, wherein the mass percentage content of the polyester soft segment in the polyimide binder is 30-90%. The present application can improve the properties of adhesiveness, flexibility, etc., of a bonding material, improve the bonding strength between an electrode coating and an electrode current collector in an electrode sheet, and avoid the problems of peeling, etc., of the electrode sheet, thereby improving the stability of the electrode sheet, and improving the performance of the cycle capacity, etc., of the battery.
Absstract of: WO2026221272A1
The present invention relates to a battery pack. The battery pack according to an embodiment of the present invention comprises: a frame member that accommodates a battery cell assembly including a plurality of battery cells and has a frame hole formed therein; and a terminal assembly inserted into the frame hole to seal the frame hole. The terminal assembly includes: a terminal member that is electrically connected to the battery cell assembly and extends along the thickness direction of the frame hole; an insulating housing fitted to the outer surface of the terminal member and located between the frame hole and the outer surface of the terminal member; and a sealing member that is fitted to the outer surface of the insulating housing and is in close contact with the outer surface of the frame member where the frame hole is located.
Absstract of: WO2026222074A1
Compositions and methods are disclosed for fast-charging silicon-based lithium-ion batteries meeting the energy density and cycle life requirements of unmanned aerial systems and other high-performance applications. Three classes of Si/SiOx anode particle surface modification are provided: organosilylation using silylating reagents including hexamethyldisilazane to yield organosiloxy Si–O–Si(CH₃)₃ surface groups; phosphorylation with phosphoric acid, polyphosphoric acid, or phosphonate reagents including DTPMP to yield surface organophosphate ester groups; and direct surface grafting with poly(vinyl methyl ether-altmaleic anhydride) (PVME-MA) via anhydride ring-opening reaction with surface silanol groups to form covalent Si–O–CO– ester bonds, confirmed by acid value titration. Polymer binder compositions include PVME-MA functionalized with 1-(3-aminopropyl)imidazole (PVME-MAIm) yielding amic acid and imide linkages with pendant imidazole groups; imidazole-modified polyacrylic acid; aziridine-crosslinked polyacrylic acid; PEG diglycidyl ether-crosslinked polyacrylic acid; and polybenzimidazole-containing polyacrylic acid. All binder compositions are electrochemically stable at 4.5 V or above versus Li/Li⁺. Electrode compositions combining PVME-MA surface-grafted Si/SiOx particles with PVME-MA-Im binder provide an integrated active material–binder system in which the same polymer backbone serves dual roles through selective sequential reactivity with surface
Absstract of: US20260331620A1
0000 This invention discloses an energy storage life extension system for solar power generation, comprising a battery module 101, a photovoltaic power generation unit 201, a battery management system 301, and a low-temperature life extension module 401. This invention actively maintains the battery module in a low-temperature range to extend battery life and improve the overall vehicle's life-cycle economics. While maintaining low-temperature stability, it effectively reduces energy consumption, avoiding the high energy consumption and high cost problems of traditional methods relying on heating or insulation. Therefore, this invention can significantly improve cycle life, reduce energy consumption, and promote efficient and reliable synergy between solar power generation and energy storage while ensuring battery performance, demonstrating innovation and broad application prospects.
Absstract of: US20260331703A1
Provided are a separator for a rechargeable battery and a rechargeable battery including the separator. The separator for a rechargeable battery includes a porous substrate and a coating layer located on at least one surface of the porous substrate, wherein the coating layer includes a crosslinked product of a mixture including a first binder and a second binder, and a crosslinking agent; and a filler. The first binder is an aqueous binder, and the second binder is a carboxyalkyl cellulose-based compound or a salt thereof The crosslinking agent includes citric acid, and the citric acid is included in a range of about 5 parts by weight to 50 parts by weight with respect to 100 parts by weight of the total of the first binder and the second binder.
Absstract of: US20260331561A1
Batteries using a positive electrode mixture comprising a sulfur-based positive electrode active material have room for improvement in terms of cycle characteristics. The battery of the present disclosure comprises a positive electrode mixture layer, an electrolyte layer, and a negative electrode. The positive electrode mixture layer comprises a sulfur-based active material, a P-containing sulfide, and carbon. BET specific surface area of the carbon is 350 m2/g or more. A molar ratio P/S between P and S contained in the positive electrode mixture layer is greater than 0.06 and less than 0.24.
Absstract of: WO2026221473A1
The present invention relates to an electrolyte for use in a high-temperature lithium secondary battery used in a high-temperature environment of 80°C or higher, the electrolyte comprising: a mixed ionic liquid formed by mixing a first ionic material that is in a solid state at room temperature and a second ionic material that is in a liquid state at room temperature; and a lithium salt dissolved in the mixed ionic liquid, wherein the first ionic material is at least one material selected from P4444IM14, P4444BETI, and P4444TFSI. The present invention enables the provision of a lithium secondary battery that can be used in a temperature range of 80°C or higher by employing an electrolyte in which a lithium salt is dissolved in a mixed ionic liquid. In addition, by forming a mixed ionic liquid by mixing a high-temperature stable ionic material, which is solid at room temperature, with an ionic liquid, which is in a liquid state at room temperature, the process of producing the electrolyte is facilitated. Furthermore, the high-temperature lithium secondary battery of the present invention has an effect of improving battery performance and durability at high temperatures by using a positive electrode to which a binder having excellent thermal electrochemical stability at high temperatures and improved slurry processability and electrolyte stability is applied.
Absstract of: DE102025115313A1
Es ist eine Energieversorgungsvorrichtung (110) für ein Schienenfahrzeug vorgesehen. Die Energieversorgungsvorrichtung (110) umfasst ein Elektronikmodul (120) mit einem ersten Gehäuse (222) zum Aufnehmen von Elektronikkomponenten (E) der Energieversorgungsvorrichtung (110), wobei das erste Gehäuse (222) an dem Schienenfahrzeug befestigbar ausgeformt ist, wobei das Elektronikmodul (120) als eine Schnittstelle zu dem Schienenfahrzeug fungiert. Die Energieversorgungsvorrichtung (110) umfasst auch ein Speichermodul (130) mit einem von dem ersten Gehäuse (222) getrennten, zweiten Gehäuse (232) zum Aufnehmen eines elektrischen Energiespeichers (S) der Energieversorgungsvorrichtung (110). Die Energieversorgungsvorrichtung (110) umfasst ferner Verbindungsmittel (140) mit einer ersten Verbindungseinrichtung (242) und einer zweiten Verbindungseinrichtung (244), wobei die erste Verbindungseinrichtung (242) an dem Elektronikmodul (120) angeordnet ist und die zweite Verbindungseinrichtung (244) an dem Speichermodul (130) angeordnet ist. Die Verbindungsmittel (140) sind ausgebildet, um eine mechanische Verbindung zum Befestigen des Speichermoduls (130) an dem Elektronikmodul (120) und eine Energieübertragungsverbindung zum Übertragen elektrischer Energie zwischen dem elektrischen Energiespeicher (S) und den Elektronikkomponenten (E) herzustellen. Dabei sind die Verbindungseinrichtungen (242, 244) werkzeuglos miteinander koppelbar und voneinander abkoppelbar.
Absstract of: WO2026218310A1
Provided are a battery cell, a battery device, an electric device, and an energy storage device, relating to the technical field of batteries. A positive electrode sheet of the battery cell comprises a positive electrode current collector and a positive electrode film layer arranged on at least one side of the positive electrode current collector; the positive electrode film layer comprises a first type of particles and a second type of particles; the first type of particles and the second type of particles each comprise a lithium-containing transition metal phosphate material; the primary particle size of the first type of particles is greater than or equal to 50 nm and less than or equal to 180 nm; the primary particle size of the second type of particles is greater than 180 nm and less than 900 nm; the average value of the Mn molar ratio of the first type of particles is less than the average value of the Mn molar ratio of the second type of particles, the Mn molar ratio referring to the ratio of the number of moles of Mn to the total number of moles of Mn and Fe. An electrolyte of the battery cell comprises a linear carboxylate solvent, and the linear carboxylate solvent comprises one or more of the structures represented by formula I.
Absstract of: WO2026218757A1
Provided in the present disclosure are a metal battery cell, a battery apparatus and an electrical apparatus. The metal battery cell comprises an electrode assembly and an electrolyte; the electrode assembly comprises a positive electrode sheet, a negative electrode sheet and a separator, the separator being located between the positive electrode sheet and the negative electrode sheet; the electrolyte comprises an organic solvent, an electrolyte salt, a diluent and a boron-based additive, the boron-based additive being an organic compound centered on boron, and the boron-based additive containing at least one of an F atom, a B-O bond and a B-B bond. The charging and discharging temperature of the metal battery cell is 40°C -70°C. The metal battery cell has good high-temperature cycle performance and high-temperature storage performance.
Absstract of: WO2026218700A1
The present disclosure relates to the technical field of batteries, and provides a battery apparatus and an electrical device. The battery apparatus comprises at least two battery cells and a heat exchange assembly. The heat exchange assembly is provided on the bottom sides of the at least two battery cells; the heat exchange assembly comprises at least two heat exchange members, at least one heat exchange member being configured as a flexible member, and at least one heat exchange member being configured as a rigid member; the flexible member and the rigid member are stacked to form a medium flow channel, the medium flow channel being used for allowing a heat exchange medium to flow therethrough; the heat exchange medium is used for exchanging heat with the at least two battery cells.
Absstract of: WO2026221199A1
An electronic device according to one embodiment of the present disclosure may comprise an information acquisition interface and a processor operatively connected to the information acquisition interface, wherein the processor can acquire state data of a battery by using the information acquisition interface, calculate a charging state of health (SOH) and a discharging SOH on the basis of the state data, calculate an SOH deviation value indicating the difference value between the charging SOH and the discharging SOH, and diagnose that an abnormality has occurred in the battery when the SOH deviation value satisfies a reference condition.
Absstract of: WO2026219172A1
The present invention relates to the field of cross-linked silicon-based negative electrode binders, and relates to a cross-linked silicon-based negative electrode binder and a preparation method therefor. The technical problem solved by the present invention is to provide a cross-linked silicon-based negative electrode binder having high adhesion. The binder comprises a polyurethane binder and a polyacrylic acid binder. In the present invention, an isocyanate is blocked by using a blocking agent, so that the properties of the isocyanate are stable during storage and transportation. During high-temperature thermal treatment, the blocking agent can be removed, and the exposed isocyanate undergoes a thermal cross-linking reaction with an active functional group in the polyacrylic acid binder to form a spatial network structure, thereby enhancing the bonding strength between a coating and a foil. The bonding form of chemical bonds ameliorates the problem of compatibility of different mixed systems, achieving superior softening and tackifying effects. In addition, the dense network structure formed by high-temperature cross-linking has multi-dimensional bonding sites, effectively improves interfacial bonding, and inhibits full-charge rebound of an electrode plate. The introduced polyurethane segments have excellent electrolyte affinity and wettability, thereby effectively enhancing ionic conduction, and reducing the DCR of a battery cell.
Absstract of: WO2026219315A1
A polyimide binder, an electrode sheet, a battery, a battery pack, and an electric device. The polyimide binder comprises a polyimide binder, and the polyimide binder comprises an aromatic hard segment, a polyamide soft segment and a multi-branched soft segment. The present application can improve the properties of adhesiveness, flexibility, swelling, long-term stability, etc., of the polyimide binder, improve the bonding strength between an electrode coating and an electrode current collector in an electrode sheet, and avoid the problems of peeling, material falling, etc., of the electrode sheet, thereby improving the stability of the electrode sheet, and improving the performance of the cycle life, etc., of a battery.
Absstract of: US20260331731A1
0000 A first surface of an exterior container has a substantially rectangular shape including a pair of first end sides each extending in a first direction and a pair of second end sides each extending in a second direction substantially orthogonal to the first direction. An insulating member is provided in a vicinity of at least one of the pair of first end sides, has a first region extending in a form of a strip in the first direction, and has a second region located on a center side of the insulating member with respect to the first region in the second direction. A thickness of the insulating member in the first region is larger than a thickness of the insulating member in the second region.
Absstract of: WO2026218730A1
A battery device (100) and an electrical device. The battery device (100) comprises a box body (1), a battery cell (2) and a thermal management component (3); the battery cell (2) is mounted in the box body (1); the thermal management component (3) is arranged in the box body (1); the thermal management component (3) is used for accommodating a fluid so as to regulate the temperature of the battery cell (2). The thermal management component (3) comprises: a current collector (31) and a heat exchange member (32); the current collector (31) fits an end part of the heat exchange member (32) and is in communication with the heat exchange member (32); the heat exchange member (32) comprises: a heat exchange core (321) and a functional layer (322); the heat exchange core (321) is provided with a plurality of heat exchange flow channels (41); the outer surface of at least part of the heat exchange core (321) is covered with the functional layer (322).
Absstract of: WO2026218699A1
Disclosed in the present disclosure are a battery cell, a battery device, an energy storage device and an electric device. The battery cell comprises a casing, a terminal post assembly, and at least one electrode assembly. The casing comprises a housing having an opening on one side in a first direction and an end cap closing the opening, the end cap and the housing enclosing an accommodating cavity. The terminal post assembly is disposed on the end cap. The electrode assembly is disposed within the accommodating cavity; the electrode assembly comprises a main body portion and at least one tab assembly. The tab assembly comprises a plurality of tabs that extend from the side of the main body portion facing the end cap and are sequentially stacked. At least some tabs among the plurality of tabs are welded to the terminal post assembly. A same tab has overlapping portions in the first direction. Within a same tab assembly, the number of intersections between all the tabs and any straight line that passes through a welding area in the first direction is not greater than the total number of all the tabs.
Absstract of: WO2026221294A1
A battery assembly according to one embodiment of the present invention comprises: a battery cell unit that includes a plurality of battery cells including electrode leads, and a cover assembly covering at least a portion of the outer surfaces of the battery cells; a housing in which the battery cell unit is accommodated; and an inlet and an outlet for circulating a coolant into the housing. The battery cell unit includes a gas discharge unit for discharging gas generated from the battery cell, and a venting space, which is connected to the gas discharge unit and through which the gas moves, is provided in the housing. A path through which the gas moves from the gas discharge unit to the venting space is separated from the coolant flowing from the inlet to the outlet.
Absstract of: WO2026221107A1
This packaging material for a power storage device is constituted of a laminate comprising, in order from the outside, at least a base material layer, a barrier layer, and a heat-sealing resin layer. The heat-sealing resin layer is constituted of a single layer or a plurality of layers; a layer of the heat-sealing resin layer that constitutes a surface on the side opposite the barrier layer side includes 50 mass% or more of polypropylene-based resin; and the average free volume diameter of a layer located inward of the barrier layer is 0.635 nm or less.
Absstract of: WO2026218721A1
A solid-state battery and an electric device. The solid-state battery comprises a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode current collector, a first positive electrode active layer and a second positive electrode active layer, where the first positive electrode active layer is located on one side of the positive electrode current collector, the second positive electrode active layer is located on the side of the first positive electrode active layer away from the positive electrode current collector, the first positive electrode active layer comprises a first binder, the second positive electrode active layer comprises a second binder, the ionic conductivity of the second binder is greater than that of the first binder, and the sum of the thickness d1 of the first positive electrode active layer and the thickness d2 of the second positive electrode active layer is greater than or equal to 100 μm. The solid-state battery has high energy density and good cycle performance.
Absstract of: WO2026221377A1
A battery cell unit according to an embodiment of the present invention comprises: a plurality of battery cells; and a cover assembly which covers at least part of the outer surfaces of the battery cells. The cover assembly comprises: an inflow part through which refrigerant is introduced into the cover assembly; a discharge part which discharges the refrigerant from the interior of the cover assembly; and a gas discharge part which discharges gas generated from the battery cells. The gas discharge part is formed on one side of the cover assembly different from at least one side of the cover assembly in which the inflow part and the discharge part are formed.
Absstract of: WO2026220428A1
The present invention generally relates to porous aromatic framework host material for batteries. Particularly, the present invention relates to a porous aromatic framework host material for lithium sulfur battery, comprising carbon porous 3D polymers (3DPs) that do not contain heteroatoms or functional groups and do not require post-functionalization, and a process of preparation thereof. The present invention also relates to a lithium sulfur battery comprising said porous aromatic framework host material as cathode/working electrode.
Absstract of: WO2026218711A1
A battery cell, a battery device and an electric device. The battery cell comprises: a casing, which comprises a first casing wall; a terminal post assembly, which is disposed on the first casing wall and comprises a terminal post member, an adapter member, and a sealing ring, wherein the adapter member surrounds the terminal post member and is connected to the first casing wall, the sealing ring comprises a first sealing portion, and in the thickness direction of the first casing wall, the first sealing portion is arranged between the terminal post member and the adapter member; and an electrode assembly, which is accommodated within the casing, a conductive portion thereof being connected to the terminal post member. At least one of the terminal post member and the adapter member has a positioning protrusion on the side facing the first sealing portion, and the first sealing portion has a positioning slot engaged with the positioning protrusion; the width of the positioning slot in the radial direction is W1, and the width of the positioning protrusion in the radial direction is W2, W1 being greater than or equal to W2.
Absstract of: WO2026218305A1
Provided are a battery cell, a battery device, an electric device, and an energy storage device. On the basis of the total mass of a negative electrode film layer, the mass percentage of silicon ranges from 0.5% to 5%; in a cumulative area distribution curve of particles obtained by means of a section of a positive electrode film layer in the thickness direction of an electrode sheet, the particle size concentration (DA90-DA10)/DA50 of the particles ranges from 1.6 to 8.5; and on the basis of the total number of particles in the section of the positive electrode film layer in the thickness direction of the electrode sheet, the percentage of particles having a particle size greater than or equal to 50 nm and less than 200 nm ranges from 26% to 64%. The battery cell achieves both excellent energy density and excellent power performance in a low-SOC range.
Absstract of: WO2026218303A1
A battery cell, a battery device, an electric device, and an energy storage device. A positive electrode sheet of the battery cell comprises a positive electrode current collector and a positive electrode film layer provided on at least one side of the positive electrode current collector, wherein the positive electrode film layer comprises first-type particles and second-type, the primary particle size of the first-type particles being greater than 180 nm and less than 900 nm, the primary particle size of the second-type particles being greater than or equal to 900 nm and less than or equal to 5 μm, and the average molar proportion of Mn in the second-type particles being less than an average molar proportion of Mn in the first-type particles. An electrolyte of the battery cell comprises an organic solvent, an electrolyte salt, and a first additive, wherein the first additive comprises one or more compounds having the structures represented by Formula I.
Absstract of: US20260331519A1
A positive electrode plate comprises a metal layer, an active material layer containing a positive electrode active material, and a protective layer. The active material layer and the protective layer are formed on the metal layer and positioned adjacent to each other in a plan view of the positive electrode plate. The protective layer contains an inorganic oxide filler and polyvinylidene difluoride. The polyvinylidene difluoride is an unmodified homopolymer having a weight average molecular weight of 750,000 or more, and a content of the polyvinylidene difluoride in the protective layer is 13.5 weight % or more. The number of lumps in the protective layer is 0.50/cm2 or less.
Absstract of: US20260331708A1
A spacer has a pair of first portions located on both end sides of the spacer in the second direction and a second portion located between the pair of first portions in a second direction, a flat surface of the spacer is formed continuously from one of the pair of first portions to the other of the pair of first portions, and at least a portion of each of the pair of first portions in a first direction has a larger thickness than a thickness of the second portion in a direction orthogonal to the flat surface.
Absstract of: WO2026219296A1
A negative electrode sheet, a preparation method for a negative electrode sheet, a battery, a battery pack, and an electric device. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer disposed on the negative electrode current collector, wherein the negative electrode active material layer is of a porous structure; and the physical specific surface area (SSA) of the negative electrode active material layer and the electrochemical specific surface area Cdl of the negative electrode sheet satisfy: 8
Absstract of: WO2026218382A1
A full-width measurement device, comprising: a frame (10), a measurement unit (20), and a calibration unit (30). The measurement unit (20) comprises a plurality of first measurement modules (21), the first measurement modules (21) are all mounted on the frame (10), and there is a spacing between every two adjacent first measurement modules (20) in the transverse direction. Each first radiation detection assembly (212) has a first detection region, and first detection regions can be combined in the transverse direction to form a continuous measurement range. The calibration unit (30) comprises guide assemblies (31), a second measurement module (32), a calibration assembly (33), and a driving assembly (34). The guide assemblies (31) and the calibration assembly (33) are both mounted on the frame (10). The second measurement module (32) is mounted on the guide assemblies (31) and movable along the guide assemblies (31). The calibration assembly (31) is located within a movement stroke of the second measurement module (32). The driving assembly (34) is used for driving the second measurement module (32) to move.
Absstract of: WO2026219641A1
The invention relates to a method for producing a rechargeable alkali metal-metal hybrid battery or alkaline earth metal-metal hybrid battery using spent cathode active material from at least one spent alkali metal ion battery or alkaline earth metal ion battery. The invention also relates to a battery produced by this method.
Absstract of: DE102025115312A1
Batteriegehäuse für eine Batteriezelle für eine Energiespeichervorrichtung eines elektrisch antreibbaren Kraftfahrzeugs; wobei das Batteriegehäuse prismatisch ist; das Batteriegehäuse in einer ersten Richtung eine Länge, in einer zu der ersten Richtung senkrechten zweiten Richtung eine Breite und in einer zu je der ersten Richtung und der zweiten Richtung senkrechten dritten Richtung eine Dicke aufweist; die Länge des Batteriegehäuse größer ist als die Breite des Batteriegehäuse; die Breite des Batteriegehäuse größer ist als die Dicke des Batteriegehäuse; das Batteriegehäuse einen Zellstapelbauraum zum Anordnen wenigstens eines Zellstapels aufweist; und das Batteriegehäuse einen gegenüber dem Zellstapelbauraum in der dritten Richtung versetzt angeordneten Funktionsbauraum aufweist.
Absstract of: WO2026221082A1
In the present invention, a negative electrode including, as a negative electrode active material, Si-C particles that include a silicon component-containing Si domain and a carbon component-containing C domain, is combined with a nonaqueous electrolytic solution containing, inter alia, a compound represented by formula (I), whereby increased resistance after charge-discharge cycles can be suppressed.
Absstract of: DE102025115132A1
Die vorliegende Erfindung beschreibt eine Batterie (100) umfassend eine erste Kavität (101), in der Module der Batterie angeordnet sind, eine zweite Kavität (102), die von der ersten Kavität (101) durch eine gemeinsame Wand getrennt ist, und einen Dichtprüfanschluss (103), der derart gestaltet ist, dass er eine simultane Dichtigkeitsprüfung beider Kavitäten (101 und 102) ermöglicht. Die Erfindung umfasst neben der Batterie (100) ein Verfahren zur Dichtigkeitsprüfung und ein Kraftfahrzeug mit einer Batterie (100).
Absstract of: WO2026221293A1
A battery assembly according to one embodiment of the present invention comprises: a battery cell unit including a plurality of battery cells; a housing in which the battery cell unit is accommodated; and an inlet and an outlet for circulating a coolant through the housing. The battery cell unit includes an inflow part for introducing the coolant into the battery cell unit, a discharge part for discharging the coolant from the inside of the battery cell unit, and a gas discharge part for discharging gas generated from the battery cell. A venting space, connected to the gas discharge part so that the gas moves therethrough, is provided in the housing.
Absstract of: WO2026221364A1
Presented are a secondary battery and an energy storage device, the secondary battery comprising: a single-cell group having one or more single cells; and an outermost electrode disposed outside the one or more single cells of the single-cell group, wherein: the outermost electrode comprises a current collector, an electrode active material layer provided on one side of the current collector, and a flame-retardant layer provided on the other side of the current collector; the electrode active material layer of the outermost electrode is disposed to face the outer surface of the single-cell group; and the flame-retardant layer comprises a plurality of capsules including a flame retardant and a binder for a flame-retardant layer, which connects and fixes the plurality of capsules to each other.
Absstract of: WO2026219274A1
The present application provides a battery, a battery pack, and an electric device. The battery comprises a heat absorption module and a cell group present on at least one side of the heat absorption module; the cell group comprises a plurality of battery cells; the heat absorption module comprises a heat-absorbing composite material and a housing disposed on an outer side of the heat-absorbing composite material; and the heat-absorbing composite material comprises a support layer and a heat-absorbing material disposed on the support layer.
Absstract of: WO2026221207A1
A battery cell according to an embodiment of the present disclosure may comprise: an electrode assembly including a negative electrode and a positive electrode; a case having a space for accommodating the electrode assembly; a lead tab extending from each of the negative electrode and the positive electrode to the outside of the space of the case; a terrace surrounding at least a portion of the lead tab from the outside of the space of the case; an insulator of which at least a portion is folded to surround the terrace; and a fixing member for coupling the insulator of which at least a portion is folded and the terrace.
Absstract of: WO2026221449A1
The present invention relates to a battery management technology and, particularly, to a method and an apparatus for detecting an abnormally degraded cell by analyzing a degradation state of individual battery cells in a battery pack. The apparatus for detecting abnormal battery degradation according to one embodiment of the present invention comprises a memory and a processor, wherein the memory stores program instructions executable by the processor, and, through execution by the processor, the program instructions instruct that: a state indicator indicating a degradation state of respective battery cells is calculated; a change trend of the state indicator is analyzed over time to estimate the degradation tendency of the respective battery cells; and a battery cell exhibiting a different degradation tendency from among the plurality of battery cells is detected as an abnormally degraded cell. Through this configuration, the safety of a battery system can be improved, the lifetime of the battery can be extended, and accurate information about the battery state can be provided to a user.
Absstract of: WO2026219371A1
Provided in the present disclosure are a lithium-ion secondary battery, an electric device and a positive electrode material. The lithium-ion secondary battery comprises a positive electrode sheet, wherein the positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer that is located on at least one side of the positive electrode current collector and comprises a positive electrode material, the positive electrode material comprising a lithium transition metal oxide which comprises primary particles having a particle size of 0.5-0.6 μm. The lithium transition metal oxide comprises nickel, cobalt and manganese, wherein on the basis of the total moles of nickel, cobalt and manganese, the molar percentage of nickel is greater than or equal to 50% and less than 100%, and the molar percentage of manganese is greater than or equal to that of cobalt. The lithium transition metal oxide further comprises a modifying element which is one or more of zirconium, yttrium, sodium, potassium, phosphorus, antimony, aluminum, titanium, boron, tungsten and carbon. At 100% SOC, the oxygen release temperature of the positive electrode sheet as determined by thermogravimetry-mass spectrometry is 215-235°C.
Absstract of: WO2026218657A1
The present application provides a case assembly, a battery module, and a battery system. The case assembly comprises: a cooling structure; a surrounding structure arranged on the cooling structure, wherein the surrounding structure and at least part of the cooling structure define an accommodating space, and the accommodating space is used for accommodating battery cells; a mounting structure arranged in the accommodating space, wherein the mounting structure is provided with mounting holes, so that the battery cells are connected to the cooling structure by means of the mounting holes; and elastic structures arranged on hole walls of the mounting holes, so that outer peripheral surfaces of the battery cells are kept in contact with the hole walls by means of the elastic structures.
Absstract of: DE102025115417A1
Die Erfindung betrifft ein Verfahren zum Impedanzheizen einer Hochvolt-Batterie (2), die in einem Hochvolt-System (1) angeordnet ist, welches ferner einen isolierenden, bidirektionalen DC/DC-Wandler (3) mit einer Primärseite (P) und einer Sekundärseite (S) mit zwei Potentialen (S+, S-) aufweist, wobei die Hochvolt-Batterie (2) zwei Teilbatterien (2.1, 2.2) mit je einer positiven Klemme und einer negativen Klemme aufweist, wobei die positiven Klemmen oder die negativen Klemmen beider Teilbatterien (2.1, 2.2) direkt miteinander verbunden sind oder werden, wobei die jeweils anderen Klemmen beider Teilbatterien (2.1, 2.2) über die Sekundärseite (S) des DC/DC-Wandlers (3) miteinander verbunden werden, wobei mittels des DC/DC-Wandlers (3) eine Ausgangsspannung (Uout) auf der Sekundärseite (S) erzeugt wird, die mindestens einer Spannungsdifferenz beider Teilbatterien (2.1, 2.2) entspricht.
Absstract of: WO2026220807A1
Provided is a flooded lead-acid battery in which the difference in chemical conversion efficiency between a positive electrode plate and a negative electrode plate is reduced by increasing the chemical conversion efficiency of the positive electrode plate, and the amount of chemical conversion electricity required for sufficient progress of chemical conversion is reduced. The flooded lead-acid battery comprises an electrode plate group and an electrolyte. The electrode plate group is housed in a cell chamber together with an electrolyte and has a laminate. The laminate comprises a plurality of positive electrode plates (10) and negative electrode plates (20) that are alternately arranged, and separators (30) that are arranged between the positive electrode plates and the negative electrode plates. The positive electrode plates (10) include a positive electrode current collector plate and a positive electrode mixture held by a grid portion of the positive electrode current collector plate. The negative electrode plates (20) include a negative electrode current collector plate and a negative electrode mixture held by a grid portion of the negative electrode current collector plate. The thickness of the positive electrode current collector plate is smaller than the thickness of the negative electrode current collector plate, and the distance (W) between the positive electrode plate (10) and the negative electrode plate (20) is 0.4 to 1.0 mm inclusive.
Absstract of: WO2026221397A1
A device and method for estimating the temperature of a battery according to an embodiment and an experimental example of the present invention may: measure a voltage variation according to a current variation for any one target battery among batteries at one or more reference time points during a charging process of a battery assembly; generate a temperature estimation model by reflecting, to an initial temperature estimation model, the voltage variation measured at the reference time point according to the current variation for the target battery; correct the temperature estimation model by reflecting a pre-stored correction ratio to the temperature estimation model; and estimate the temperature of the target battery by using the corrected temperature estimation model.
Absstract of: WO2026219272A1
A sulfide solid-state electrolyte, an electrode, a solid-state electrolyte membrane, a battery, a battery assembly, and an electrical device. The sulfide solid-state electrolyte contains a halogen. In the crystal structure of the sulfide solid-state electrolyte, the occupancy of the halogen at the 4d Wyckoff position is 0.68-0.85.
Absstract of: WO2026221443A1
The present invention relates to a cathode active material in a single-particle form, the material having a high rolling density, thereby exhibiting little particle breakage and, consequently, improving the lifetime characteristics and gas generation characteristics of a lithium secondary battery, and, to a cathode active material, a cathode comprising same and a lithium secondary battery, the material comprising a lithium composite transition metal oxide in a single-particle form, and containing 60 mol% or more of nickel based on the total metals excluding lithium, wherein the single-particle form is a form of a single particle composed of one primary particle or a form formed by the aggregation of 2-10 primary particles, and the primary particle size distribution according to relation 1 described in the present specification is 11.00 or more.
Absstract of: WO2026221189A1
Provided is an electrode lead-welding jig device configured to prevent deformation of a jig caused by thermal energy generated during welding of an electrode lead. The electrode lead-welding jig device is configured to weld a battery cell stack in which a plurality of battery cells are stacked, the battery cells each including a battery case and an electrode lead protruding from the battery case to the outside. The device comprises: a jig including a jig body that is disposed between the electrode lead and the battery case to prevent thermal energy for welding adjacent electrode leads of the plurality of battery cells from travelling toward the battery case and being transferred to the plurality of battery cells; and a pallet connected to the lower part of the jig to fix the jig, wherein the jig includes a pallet connection part extending from the jig body to be connected to the pallet, and a groove part provided in the jig body to prevent deformation of the jig caused by thermal energy for welding the electrode leads.
Absstract of: WO2026218227A1
The present application relates to the technical field of batteries, and specifically relates to a battery system and an electric apparatus. The battery system of the present application comprises a first battery pack and a second battery pack, wherein the first battery pack comprises a plurality of first battery cells, the second battery pack comprises a plurality of second battery cells, the first battery cells and the second battery cells are of different chemical systems, and the volumetric energy density VED1 of the first battery cells and the volumetric energy density VED2 of the second battery cells satisfy: VED2>VED1; and the first battery pack and the second battery pack can independently provide a voltage to a load. The battery system provided in the present application may have good endurance performance across multiple application scenarios.
Absstract of: WO2026219900A1
The present invention relates to an electrode binder comprising a fluorinated polymer A1 comprising monomer units derived from a monomer M1 being vinylidene fluoride and an acrylic polymer A2; said fluorinated polymer A1 also comprises monomer units derived from a monomer M3 bearing an acid functional group and said acrylic polymer A2 also comprises an anhydride functional group; or said fluorinated polymer A1 also comprises an anhydride functional group and said acrylic polymer A2 comprises monomer units derived from a monomer M3 bearing an acid functional group.
Absstract of: WO2026218731A1
A battery apparatus (1000), an electric device (2000), and a connecting tube (20). The battery apparatus (1000) comprises: battery cells (200); a plurality of heat exchange plates (10), wherein each heat exchange plate (10) fits against one side surface of the corresponding battery cell (200) so as to exchange heat with the battery cell (200), and each heat exchange plate (10) is provided with a connecting member (11); and connecting tubes (20), wherein each connecting tube (20) is located between two adjacent heat exchange plates (10), and end portions of the connecting tubes (20) are configured to be connected to the connecting members (11); in the height direction of the battery apparatus (1000), the maximum size of each connecting tube (20) is X1; and in the length direction of the heat exchange plates (10), the maximum size of each connecting tube (20) is Y1, and X1 is greater than Y1.
Absstract of: US20260331636A1
0000 A battery pack may include a battery cell, a cooler located below the battery cell and having a cooling channel, and a protection panel that covers the cooler from a bottom. A groove extending along the cooling channel may be provided to a lower surface of the cooler. At least one reinforcing rib protruding toward the cooler may be provided to an upper surface of the protection panel. The reinforcing rib may be accommodated in the groove of the cooler.
Absstract of: WO2026219114A1
Disclosed in the present application are a battery cell and a battery pack. The battery cell comprises: a casing, which is provided with an accommodating cavity; an electrode assembly, which is arranged in the accommodating cavity; a top cap, which covers the casing and is provided with an electrolyte injection hole and an explosion-proof valve opening; an explosion-proof valve, which is arranged on the top cap and seals the explosion-proof valve opening; and an insulating member, which comprises an insulating body and a flow guide portion, wherein the insulating body is connected to the side of the top cap close to the electrode assembly, the flow guide portion is connected to the insulating body, and at least a part of the flow guide portion is located on the side of the insulating body close to the electrode assembly; a flow guide cavity is provided inside the flow guide portion, and the flow guide cavity is in communication with the electrolyte injection hole; a flow guide hole is provided on the side of the flow guide portion close to the electrode assembly, the flow guide hole is in communication with each of the flow guide cavity and the accommodating cavity, and the flow guide hole and the electrolyte injection hole are staggered; and when the explosion-proof valve cracks, the flow guide cavity is brought into communication with the explosion-proof valve opening.
Absstract of: US20260331566A1
Provided is an anode-free lithium secondary battery including an anode current collector having a dual coating layer, the anode-free lithium secondary battery comprising a cathode active material, a separator, and an electrolyte between a cathode current collector and the anode current collector, wherein the anode current collector is coated with an artificial SEI layer containing a metal, and a natural solid electrolyte interphase (SEI) film is formed on the anode current collector by reaction of at least a part of the artificial SEI layer with the electrolyte when the anode-free lithium secondary battery is first charged.
Absstract of: US20260331670A1
0000 A cooler stacked alternately with batteries and cooling the batteries includes a cooling portion arranged between adjacent batteries in a stacking direction, in which the cooling portion includes a channel through which a coolant flows, a first cooling face in contact with one of the batteries, a second cooling face-in contact with another of the batteries, a first protrusion protruding in the stacking direction from a rear face of the first cooling face toward a rear face of the second cooling face, and a second protrusion protruding in the stacking direction from the rear face of the second cooling face toward the first cooling face. The channel is fashioned from an internal space in which the rear faces of the cooling faces face each other, and when the first and second cooling faces are in facial contact with the batteries, the first and the second protrusions face each other.
Absstract of: WO2026221384A1
The present disclosure relates to a negative electrode for a lithium secondary battery and a lithium secondary battery comprising same, and provides a negative electrode for a lithium secondary battery, comprising: a negative electrode current collector; a first lithium host layer disposed on the negative electrode current collector and comprising first particles; and a second lithium host layer disposed on the first lithium host layer and comprising second particles, wherein the first particles comprise a first carbon-based material and an active material forming an alloy with lithium, the surface of the first particles being coated with amorphous carbon, and the second particles comprise a second carbon-based material and an active material forming an alloy with lithium.
Absstract of: WO2026219490A1
The present invention concerns a process for recycling lithium batteries, said process comprising: a. providing one or more lithium batteries; b. dry shredding the one or more lithium batteries; d. separating copper and aluminium foils from the shredded lithium batteries to obtain a black mass; c. subjecting the black mass to a first temperature treatment to remove electrolyte, volatile organics and PVDF to obtain a first temperature treated black mass, said first temperature treatment has a temperature of at most 480°C; e. subjecting the first temperature treated black mass to a second temperature treatment to liberate Li from the cathode active material (CAM) and obtain a second temperature treated black mass, said second temperature treatment has a temperature of at least 500°C; f. leaching the second temperature treated black mass with CO2 and water to obtain an aqueous LiHCO3 solution and a residue comprising graphite.
Absstract of: WO2026221105A1
Provided is a composite powder formed of carbon nanotubes and a transition metal composite oxide containing at least zinc and niobium.
Absstract of: WO2026221307A1
According to exemplary embodiments of the present invention, a battery cell assembly comprises: a plurality of battery cells arranged in the X direction; a first integrated circuit assembly positioned in the +Y direction of the plurality of battery cells; a second integrated circuit assembly positioned in the -Y direction of the plurality of battery cells; and a sensing connection portion connecting the first integrated circuit assembly and the second integrated circuit assembly in front of the plurality of battery cells in the X direction, wherein the sensing connection portion includes a connection line overlapping the plurality of battery cells in the X direction, and the connection line may include a laser direct structure (LDS) sensing line.
Absstract of: WO2026219702A1
The present invention relates to a pitch powder for use in the manufacture of negative electrode materials for secondary batteries, said pitch powder having properties which are advantageous in that the composite powder produced using said pitch powder has a low BET specific surface area and, once used in the negative electrode of a battery, allows to achieve a long cycle life.
Absstract of: US20260331676A1
A battery pack structure includes a battery module, including a plurality of battery cells disposed arrayed in parallel in a predetermined direction, and an end plate disposed on an outer side in an array direction of the battery cells, a lower case that accommodates a lower portion of the battery module, and a module bracket that fixes the end plate to the lower case such that a gap is created between the end plate and an inner wall face of the lower case, and that also includes a bending point that bends toward the end plate side at a portion facing the end plate, and further extends from the bending point along the end plate to fashion an abutting face that faces the end plate.
Absstract of: US20260331461A1
Provided is a negative electrode for a solid-state lithium secondary battery. The negative electrode includes a negative electrode mixture layer containing a negative electrode active material and a first solid electrolyte. The negative electrode active material contains silicon and is covered with a covering layer. The covering layer contains a second solid electrolyte and a polymer.
Absstract of: US20260331732A1
0000 The present disclosure relates to a battery cell, a battery apparatus, and an electric apparatus. The battery cell comprises a housing, an end cover, a support member, and at least one electrode assembly. The housing accommodates an electrolyte and includes a first wall, and the end cover is disposed to cover an opening of the housing. At least part of the electrode assembly is received within the housing. The electrode assembly includes a first electrode plate and has a first end surface facing the first wall, with an end portion of the first electrode plate disposed facing the first end surface. At least part of the support member is located between the first end surface and the first wall and is in contact with the first end surface. The support member is provided with at least one accommodating groove having a first opening facing the first end surface.
Absstract of: US20260331625A1
A battery pack includes at least one battery module and a cooler disposed above the at least one battery module. The at least one battery module includes a plurality of pouch-type battery cells and a module casing supporting the plurality of pouch-type battery cells from below, an upper part of the module casing being open.
Absstract of: US20260331572A1
There is provided an all-solid-state battery including a positive electrode layer, a solid electrolyte layer, and a negative electrode layer, wherein the solid electrolyte layer contains solid electrolyte particles having a particle size of 1 μm or less at least at an end in a direction perpendicular to the direction in which the positive electrode layer, the solid electrolyte layer and the negative electrode layer are laminated, and the solid electrolyte layer has a density of 1.90 g/cm3 or more at least at the end in the direction perpendicular to the lamination direction.
Absstract of: WO2026218965A1
A positioning mechanism (100), comprising a base (110), a positioning portion (120), a protective plate (130) and an elastic member (140). The positioning portion (120) is mounted on the base (110); the protective plate (130) is provided with an accommodating hole corresponding to the positioning portion (120), the protective plate (130) being slidably sleeved on the positioning portion (120) by means of the accommodating hole; the elastic member (140) is mounted between the base (110) and the protective plate (130); the protective plate (130) can slide along the positioning portion (120) to expose the positioning portion (120), or, under the action of the elastic member (140), cause the positioning portion (120) to retract into the accommodating hole. With respect to the positioning mechanism (100), the positioning portion (120) is covered by the protective plate (130) in a welding process, so that spatter generated during welding is less likely to adhere to the surface of the positioning portion (120), thereby enabling the positioning mechanism (100) and a welding device (10) to better maintain positioning accuracy. The present application also relates to a welding device (10).
Absstract of: WO2026218992A1
Provided in the present disclosure is a battery electrolyte filling apparatus. The battery electrolyte filling apparatus comprises: a battery conveying mechanism, which is used for conveying a battery; a battery electrolyte filling mechanism, which is used for filling an electrolyte in the battery; a battery transfer mechanism, which is capable of transferring the battery from the battery conveying mechanism to the battery electrolyte filling mechanism; and a battery re-feeding mechanism, which is arranged at the front end of the battery conveying mechanism and is used for receiving a battery to be subjected to electrolyte replenishment. By means of the coordinated operation of the battery conveying mechanism, the battery electrolyte filling mechanism, the battery transfer mechanism and the battery re-feeding mechanism, the battery electrolyte filling apparatus simplifies the operation process of battery electrolyte replenishment, achieves a high degree of automation, and improves the efficiency of battery electrolyte replenishment.
Absstract of: WO2026221374A1
According to exemplary embodiments, a battery pack is provided. The battery pack may comprise: a base plate; a plurality of battery cells disposed on the base plate and arranged in a first horizontal direction; and support pins arranged between the plurality of battery cells. Each of the support pins may include: a first portion that overlaps the plurality of battery cells in the first horizontal direction; and a second portion connected to the first portion and disposed above the plurality of battery cells. The second portion may have a variable thickness.
Absstract of: US20260328175A1
0000 A vehicle battery jump-start system configured for installation inside a vehicle may include a permanently installed high-current power pathway including a two-part positive cable and a ground cable, each constructed from 2-gauge wire, wherein the two-part positive cable comprises split positive cable routing at a fuse holder to a starter, and wherein the grounding cable is in direct contact with an engine block or a negative battery cable; a fuse assembly providing overcurrent protection rated to 125 amps or higher; a mechanically keyed connector configured to prevent reverse polarity connection; a quick disconnect coupling mounted within the vehicle cabin; and a portable power supply interface configured to provide direct power to the vehicle's starter system without requiring battery access, wherein the system enables a user to initiate a jump-start of the vehicle from the interior without hood access.
Absstract of: WO2026218828A1
A lithium-ion secondary battery, an electric device and a positive electrode material. The lithium-ion secondary battery comprises a positive electrode sheet, the positive electrode sheet comprising a positive electrode current collector and a positive electrode film layer disposed on at least one side of the positive electrode current collector and comprising the positive electrode material. The positive electrode material comprises a lithium transition metal oxide, the lithium transition metal oxide comprising nickel, cobalt, and an element M, wherein the element M comprises manganese and/or aluminum. Based on the total number of moles of nickel, cobalt and the element M, the molar pecentage of nickel is greater than or equal to 50% and less than 100%. The lithium transition metal oxide comprises primary particles having a particle size of 0.5 μm to 6 μm. X-ray diffraction analysis of the positive electrode material yields integrated areas A(003), A(101), A(012) and A (104) of the (003), (101), (012) and (104) crystal planes, respectively, which satisfy the following relationship: 3.5%≤A (012)/(A(003)+A(101)+A(012)+A(104))≤5.5%, and 30%≤A(104)/(A(003)+A(101)+A(012)+A(104))≤40%.
Absstract of: WO2026221395A1
The present invention provides a structure of a pouch, the pouch being a metal-sheet-material pouch formed to accommodate an electrode assembly, the structure of the pouch comprising a first cup portion and a second cup portion having a bridge portion therebetween, wherein the first cup portion is formed in a hexahedral shape of which the depths of two side walls are different, and the second cup portion is formed in a wedge shape which is tapered toward the direction moving away from the bridge portion. In addition, the present invention also provides a structure of a battery cell comprising the pouch, and a manufacturing method therefor.
Absstract of: US20260331591A1
The battery of the present disclosure includes a first unit battery and a second unit battery. The first unit battery and the second unit battery are stacked in the order of the first unit battery and the second unit battery along the stacking direction. The first element serving as the carrier ion of the first unit battery is different from the second element serving as the carrier ion of the second unit battery.
Absstract of: US20260331559A1
0000 A rechargeable battery includes a cell case, an electrode body, and an elastic member. The cell case has two opposing side walls. The electrode body is accommodated in the cell case and is disposed between the two opposing side walls. The electrode body is formed by stacking a cathode plate and an anode plate with a separator arranged in between and rolling the stack. The elastic member is disposed between the electrode body and at least one of the two opposing side walls. The elastic member includes a close-contact portion and projections. The close-contact portion is in close contact with the electrode body. The projections project from the close-contact portion toward the at least one of the two opposing side walls. The projections are each tapered.
Absstract of: US20260331934A1
0000 Modular power sources and systems are provided. The modular power source includes a housing, a power module configured for providing a variable output of power, and at least one modular battery unit. The housing includes a frame constructed of powder-coated steel to create at least one level; two heavy-duty casters attached at a first end of the frame; two airless tires attached at a second end of the frame; a cooling vent system; a hinged access panel; and a push handle. The power module includes an AC charging input; and a plurality of AC power outputs. A power supply system includes an equipment configured to receive electrical power; and a modular power source configured to provide electrical power to the equipment.
Absstract of: US20260331633A1
A battery apparatus includes a box body assembly, a thermal management assembly, and a battery assembly. The battery assembly includes a plurality of battery layers stacked along a height direction of the battery apparatus. The plurality of battery layers are disposed in the box body assembly. The thermal management assembly includes a heat exchange member and a heating member. The heat exchange member has at least one medium flow channel therein. The at least one medium flow channel is configured for conduction of a heat exchange medium. The heat exchange medium is configured to perform heat exchange with the battery layer. The heat exchange member is disposed between the plurality of battery layers. The heating member is disposed between the battery layer and the heat exchange member, or the heating member is disposed between the battery layer and the box body assembly.
Absstract of: US20260331674A1
0000 A battery pack may include a casing configured to couple to a power tool. A battery pack may include a cell frame supported within the casing, the cell frame including a plurality of receptacles to secure a plurality of interconnected battery cells. A battery pack may include an outer housing at least partially surrounding the casing and the cell frame, the outer housing including protrusions extending through the casing and contacting the cell frame, the protrusions defining multiple points of contact between the casing and the outer housing, wherein the protrusions are positioned and configured to integrate the casing and the outer housing together to form a unitary structure.
Absstract of: WO2026219082A1
The present application provides a heat exchange system, an energy storage system, and an energy storage station. The heat exchange system is suitable for heat exchange with a component requiring heat exchange. The heat exchange system comprises a heat exchange portion. The heat exchange portion comprises a heat exchange inlet and a heat exchange outlet. The heat exchange inlet comprises a first heat exchange inlet and a second heat exchange inlet that are arranged opposite to each other in a first direction. The first heat exchange inlet is suitable for introducing a first heat exchange medium, the second heat exchange inlet is suitable for introducing a second heat exchange medium, and the flow direction of the second heat exchange medium and the flow direction of the first heat exchange medium are opposite in the first direction. The heat exchange outlet is separately communicated with the first heat exchange inlet and the second heat exchange inlet. The present application can improve the uniformity of the heat exchange capability of a heat exchange system, thereby ensuring temperature uniformity across different regions of an energy storage system.
Absstract of: DE102026110835A1
Eine Sicherungseinheit (20) enthält eine Chipsicherung (30), ein erstes Anschlussstück (40) mit einem ersten elektrischen Verbindungsabschnitt (41), der elektrisch mit einer ersten Elektrode (31) der Chipsicherung (30) verbunden ist und elektrisch mit einem Verbindungsleiter (10) (erstes elektrisches Verbindungsziel) verbunden ist, sowie ein zweites Anschlussstück (50) mit einem zweiten elektrischen Verbindungsabschnitt (51), der elektrisch mit einer zweiten Elektrode (32) der Chipsicherung (30) verbunden ist und elektrisch mit einer Batterieüberwachungseinheit (100) (zweites elektrisches Verbindungsziel), wobei der erste elektrische Verbindungsabschnitt (41) und der zweite elektrische Verbindungsabschnitt (51) mit einem Paar von Aussparungen (90) versehen sind, die von den jeweiligen distalen Endflächen in Richtungen voneinander weg in einer Anordnungsrichtung (X) des ersten Anschlussstücks (40) und des zweiten Anschlussstücks (50) vertieft sind, in die die Chipsicherung (30) eingesetzt ist.
Absstract of: WO2026218078A1
A novel organic removal and enhanced leaching process for black mass from lithium-ion batteries is disclosed. The process integrates a feedstock-based purification method for efficient impurity removal and enhanced recovery of desired metals. Embodiments of the disclosed process utilize an integrated multi-stage leaching configuration involving three interdependent stages, with controlled conditions to selectively dissolve and remove impurities while increasing recovery of valuable metals such as lithium, cobalt, nickel, manganese, and graphite. At least a portion of the organic material is removed from leach solution using a carbonaceous material.
Absstract of: US20260326572A1
The present disclosure relates to a method of providing an early warning of thermal runaway in a battery cell, the method comprising: monitoring, over time, a temperature of the battery cell; monitoring, over time, a real part of an impedance of the battery cell for a plurality of test signal frequencies by: applying a plurality of test signals to the battery cell at each of a plurality of discrete time intervals, each of the plurality of test signals having a corresponding one of the plurality of test signal frequencies; and determining, for each applied test signal, the real part of the impedance of the battery cell; determining, over time, whether the temperature of the battery cell is increasing; determining, over time, whether the real parts of the impedances corresponding to the plurality of test signal frequencies have converged; and providing a first warning if the real parts of the impedances at the plurality of test signal frequencies have converged and the temperature has been increasing for a first predetermined number of the discrete time intervals.
Absstract of: US20260331605A1
A battery module includes a plurality of battery cells, and a Battery Management System (BMS) module connected to at least one of the plurality of battery cells. The BMS module includes a substrate, a plurality of electrical components mounted on one surface of the substrate, and a cooling element disposed on the other surface, opposite to the one surface, and cooling at least a portion of the other surface.
Absstract of: US20260331645A1
Herein is described a photoelectrode and a rechargeable lithium-ion photobattery comprising the photoelectrode. The photoelectrode comprises a transition metal oxide component and a discrete conductive carbon component. The transition metal oxide component comprises a single transition metal oxide material having an average pore size of at least 5 nm. The discrete conductive carbon component has a thickness of 50 μm or less. Herein is also disclosed a method of preparing the photoelectrode and the use of said photoelectrode in a photobattery system.
Absstract of: US20260326861A1
0000 The strut power module according to the invention is a strut pylon in which a battery pack is mounted, the strut power module is connected to a propulsion module, and offers a detachable system for propelling watercrafts, such as boat or electric hydrofoil, which facilitates the operation of the watercraft and its individual components, and optimizes the processes of transportation, storage, repair and stocking with spare parts, as well as increases the life of the battery pack.
Absstract of: WO2026218738A1
The present application provides a fastener, a battery device, and an electric device. The fastener comprises a thread and a support portion, wherein the support portion is connected to the thread, an outer peripheral surface of the support portion comprises support surfaces, the support surfaces are configured to receive external torque and transmit the torque to the thread, each support surface comprises a first arc surface and two flat surfaces, the first arc surface is bent outward in a direction perpendicular to the axial direction of the fastener, and the two flat surfaces are respectively connected to two ends of the first arc surface in a circumferential direction of the fastener.
Absstract of: US20260331673A1
0000 An integrated battery and shock and vibration barrier isolates its battery from shocks and vibrations and achieves a natural frequency of less than 10Hz. The integrated battery and shock and vibration barrier has no fitment problems and doesn’t require volume-reducing modifications to the battery. The integrated battery and shock and vibration barrier is equipped with securement features that interact with the existing hold down structures in OEM battery holders and includes prominent features that inform consumers of the unique qualities of the battery.
Absstract of: WO2026218191A1
Provided in the present application are a battery apparatus and an electric device. The battery apparatus comprises a case and a plurality of battery cell groups. The case has an accommodating cavity. The plurality of battery cell groups are disposed in the accommodating cavity and arranged in a first direction. Each battery cell group includes a plurality of battery cells arranged in a second direction, wherein the second direction is perpendicular to the first direction and parallel to the thickness direction of the battery cells. The dimension of the accommodating cavity in the second direction is greater than the dimension of the accommodating cavity in the first direction. Each battery cell comprises a housing and at least one electrode assembly disposed within the housing, wherein the at least one electrode assembly is arranged in the second direction; the electrode assembly is of a wound structure and comprises a flat region and two bent regions connected to the flat region, the two bent regions respectively being disposed on two sides of the flat region in the first direction. The ratio of the total dimension of the bent regions arranged in the first direction to the dimension of the accommodating cavity in the first direction is 2.4%-10.2%.
Absstract of: WO2026221257A1
According to an exemplary embodiment, an apparatus and a method for diagnosing a crack in a battery pack are provided. The apparatus for diagnosing a crack in a battery pack comprises: an acceleration sensor provided in a battery pack accommodating a plurality of battery cells and configured to measure a vibration signal; a reference signal generation unit for providing a reference phase signal from the battery pack; a signal processing unit for calculating a resonance frequency of the battery pack by analyzing the vibration signal and the reference phase signal, and determining whether the battery pack has a crack, on the basis of a change in the resonance frequency or an analysis of a phase difference; and a notification unit for transmitting, to a user, information indicating whether the battery pack has a crack, as determined by the signal processing unit.
Absstract of: WO2026218795A1
A battery assembly and an electrical device. The battery assembly comprises a heat-absorbing assembly and a cell group located on at least one side of the heat-absorbing assembly; the cell group comprises cells; the heat-absorbing assembly comprises a heat-absorbing composite material and a housing for accommodating the heat-absorbing composite material; the heat-absorbing composite material comprises a support layer and a heat-absorbing material provided on the support layer.
Absstract of: WO2026218734A1
A battery cell, a battery device and an electric device, relating to the technical field of batteries. The battery cell comprises a casing assembly, an electrode assembly, and a terminal post assembly. The terminal post assembly comprises a terminal post body and an adapter member. The adapter member is welded to a first casing wall. At least one identification portion is formed on the side surface of the adapter member facing away from an accommodating cavity. In the radial direction of the adapter member, the identification portion is spaced apart between the outer periphery of the terminal post body and the outer periphery of the adapter member. The identification portion is configured such that it can be identified by visual detection. The surface roughness of the identification portion is lower than the surface roughness of the remaining portion of the side surface of the adapter member facing away from the accommodating cavity other than the identification portion. The surface roughness of the remaining portion of the side surface of the adapter member facing away from the accommodating cavity other than the identification portion is lower than the surface roughness of an outer peripheral wall of the adapter member.
Absstract of: US20260331512A1
The present invention relates to a secondary battery, particularly an electrode for a lithium-sulfur battery, a manufacturing method thereof, and a secondary battery comprising the same, particularly a lithium-sulfur battery, and more specifically, the electrode for a secondary battery, particularly for a lithium-sulfur battery, of the present invention includes a cationic nanocellulose binder surface-modified with a cationic functional group, thereby increasing the specific surface area where the cationic nanocellulose binder contacts the conductive material and the active material, which can simultaneously improve the adhesion within the electrode and the adhesion between the electrode and the current collector, and by inducing 3-dimensional growth of lithium sulfide, it can suppress the shuttle effect of lithium polysulfides and passivation of the electrode, and increase the loading amount of the active material and the specific capacity of the battery.
Absstract of: US20260331730A1
An electrode and a secondary battery including the electrode. The electrode includes a substrate, a first composite layer comprising an active material and disposed on a part of one surface of the substrate, and a first colored insulating layer having a color different from the substrate and covers each end portion of the first composite layer.
Absstract of: US20260331457A1
0000 A negative electrode layer 10, a positive electrode layer 20, and a solid electrolyte layer 30 are laminated in a T direction. One direction from among directions orthogonal to the T direction is an X direction. A direction orthogonal to the T direction and the X direction is a Y direction. A negative-electrode current collector layer 11 has a negative-electrode current collector layer body part 12, and a negative electrode tab 14 extending from the negative-electrode current collector layer body part 12 in an X-direction. The outer peripheral surface of the negative electrode layer 10 has pairs of side surface sections 13, 16 opposite from each other in the Y direction. When viewed in the T direction, each of the side surface sections 13, 16 has an uneven section 13a, 16a that includes recesses and protrusions repetitively arranged in the X direction.
Absstract of: US20260328847A1
The present disclosure relates to a secondary battery testing apparatus including a case, a drum rotatably disposed in the case, a cable configured to be wound around the drum and having a detection terminal extending outward from the case, an adjustment member connected to the drum and configured to adjust rotation of the drum, and a measurement member connected to the cable and configured to measure a detection signal transmitted through the cable.
Absstract of: WO2026220611A1
A clad 1 includes a first layer 2 and a third layer 4 made of pure nickel or an Ni-based alloy, and a second layer 3 made of an Fe-based alloy. Standard deviations s1 and s3 of the thicknesses μm of the first layer and the third layer are each 60 μm or less, and the clad satisfies the following expression. 0.050≤(t1×d1×Ni1+t2×d2×Ni2+t3×d3×Ni3)/(t1×d1+t2×d2+t3×d3)≤0.630. In the expression, t1, t2, and t3 are the respective proportions of the thicknesses of the first layer, the second layer, and the third layer when the total thickness of the clad is taken as 1, d1, d2, and d3 are the respective densities g/cm3 of the first layer, the second layer, and the third layer, and Ni1, Ni2, and Ni3 are the respective mass fractions of Ni per unit mass of the first layer, the second layer, and the third layer. The clad may be composed of the first layer and the second layer.
Absstract of: WO2026218722A1
A battery cell, a battery apparatus, and an electric apparatus, relating to the technical field of batteries. The battery cell comprises: a housing and a terminal component, wherein the housing comprises a housing body and a housing cover, at least one end of the housing body in a first direction is an open end, the housing cover covers the open end, the housing cover is provided with a mounting hole, the terminal component is disposed at the mounting hole and comprises a terminal body and a transition member, the terminal body is electrically connected to an electrode assembly accommodated within the housing, and the transition member surrounds the terminal body and is insulatively connected to the terminal body; the transition member is connected to the housing cover to form a first weld mark, the housing cover is connected to the housing body to form a second weld mark, and the housing cover comprises a solid portion spaced between the first weld mark and the second weld mark.
Absstract of: WO2026218247A1
The present application discloses a thermal insulation assembly, a battery device, and an electric device. The battery device comprises a plurality of battery cells and thermal insulation assemblies; the plurality of battery cells are sequentially arranged; and each thermal insulation assembly is sandwiched between two battery cells in the arrangement direction of the two battery cells. Each thermal insulation assembly comprises an outer insulating layer, fire-resistant layers and a middle thermal insulation layer, the fire-resistant layers and the middle thermal insulation layer are stacked in the arrangement direction, and the outer insulating layer encloses the fire-resistant layers and the middle thermal insulation layer. Each thermal insulation assembly comprises an outer insulating layer, fire-resistant layers and a middle thermal insulation layer, the fire-resistant layers and the middle thermal insulation layer are stacked in the arrangement direction, and the outer insulating layer encloses the fire-resistant layers and the middle thermal insulation layer, so that the outer insulating layer can provide insulation protection for battery cells on two sides; in addition, the fire-resistant layers and the middle thermal insulation layer are enclosed by the outer insulating layer, so that the fire-resistant layers and the middle thermal insulation layer can mitigate the impact on adjacent battery cells when thermal runaway protection of a battery cell fails, thereby reduc
Absstract of: WO2026218717A1
A battery apparatus (100) and an electrical device, relating to the technical field of batteries. The battery apparatus (100) comprises a battery case body (10) and a battery cell (20) mounted in the battery case body (10); the battery case body (10) comprises a first wall (11) and a second wall (12) opposite to each other; the battery apparatus (100) comprises a middle portion (101) and side portions (102) located on two sides of the middle portion (101); the middle portion (101) is provided with a first connection structure (40), the first connection structure (40) passing through the first wall (11), an inner cavity of the battery case body (10), and the second wall (12). By means of the first connection structure (40) connecting to an electrical device, the overall structure of the middle portion (101) of the battery apparatus (100) can be connected to the electrical device, thereby improving the stability of connection between the middle portion (101) of the battery apparatus (100) and the electrical device and reducing the possibility that the middle portion (101) of the battery apparatus (100) resonates when the electrical device vibrates, and thus improving the structural stability and reliability of the battery apparatus (100).
Absstract of: US20260328859A1
A battery capacity estimation method is a method that estimate a deterioration state of a battery, and includes acquiring a capacity value, a current value, and a temperature of the battery in a battery capacity measurement and estimating a capacity true value of the battery by adding a capacity correction value calculated using Equation (1) described below to the capacity value.dQ=k′(T)I*100SOH(1)(where dQ is a capacity correction value, T is a temperature (° C.), k′(T) is a constant at the temperature T, I is a current value, and SOH is a ratio (%) of a full charge capacity of the battery at a time of measurement relative to an initial full charge capacity of the battery.)
Absstract of: US20260331631A1
A battery cell cooling member is arranged between adjacent battery cells and includes two facing plates formed on an inner side between the battery cells to face the battery cells, respectively, and an elastic pad between the two facing plates and having a cooling path.
Absstract of: US20260331688A1
0000 A ventilation control apparatus according to an embodiment of the present disclosure is installed in a battery container including one or more batteries. The ventilation control apparatus includes: a smoke detection unit configured to detect smoke inside the battery container and to output a sensing signal when the smoke is detected; and a control unit configured to, upon receiving the sensing signal, control an operating state of a ventilation unit installed in the battery container to a turned-on state, and to output, to an external device, a ventilation operation signal indicating that the operating state of the ventilation unit has been controlled to the turned-on state.
Absstract of: US20260331606A1
One aspect of the present disclosure provides a battery pack including a battery module, an analog output generation circuit, and a control circuit. The control circuit is configured (i) to control the analog output generation circuit to generate an analog output voltage corresponding to a charge level of the battery module and (ii) to transmit communication data to a charger. The communication data includes parameters for the charger to generate a correlation profile. The correlation profile correlates a maximum required value of a charge current with the analog output voltage such that the maximum required value changes at two or more rates of change while the analog output voltage is transitioning among different voltage levels between a first voltage level and a second voltage level.
Absstract of: US20260331929A1
One aspect of the present disclosure provides a battery pack including a battery module and a control circuit. The control circuit is configured to transmit first communication data to a charger via serial communication. The first communication data includes a logical value of true at each of a first designated bit position and a second designated bit position such that the charger identifies that the battery pack is compatible with each of a first charge control, a second charge control, and a third charge control.
Absstract of: US20260324718A1
0000 A vaporizing device can include a pod including a pod battery to power the pod to produce and emit vapor through a mouthpiece. The pod can be a single-use disposable vaporizing device pod. The vaporizing device can also include a power bank including a power bank battery. The power bank and the pod can be structured to fit together in a combined configuration. The power bank battery can charge the pod battery with the power bank and the pod fit together and electrically connected to each other in the combined configuration. The pod can produce and emit vapor in a standalone configuration wherein the pod is not fit together with the power bank or electrically connected to the power bank. Also, the pod can produce and emit vapor in the combined configuration wherein the pod is fit together with the power bank and electrically connected to the power bank.
Absstract of: US20260331579A1
0000 A polymer electrolyte that exhibits high ionic conductivity. The polymer electrolyte contains a polymer having a specific free terminal polyether structure, a specific polyether cross-linked structure, and a specific fluorine sulfonylimide anionic group, and the volume swelling ratio of the polymer electrolyte determined by a methyl ethyl ketone immersion method is 40% to 120%.
Absstract of: US20260331578A1
A polymer electrolyte exhibits high mechanical strength even at high temperatures, and high ionic conductivity, and can minimize the occurrence of dendrites at the interface between a polymer electrolyte and a battery negative electrode. The polymer electrolyte contains a polymer having a specific free terminal polyether structure, a specific polyether cross-linked structure, and a specific fluorine sulfonylimide anionic group, the polymer electrolyte contains a specific amount of a specific alkali metal salt, and the volume swelling ratio of the polymer electrolyte determined by a methyl ethyl ketone immersion method is 30% to 120%.
Absstract of: US20260324717A1
An aerosol-generating device according to an embodiment includes a main body including a first connection terminal on a bottom surface thereof, and a battery removably coupled to the main body and including a first battery terminal connected to the first connection terminal on a first surface facing the bottom surface, wherein the battery has a cross-sectional shape matching a cross-sectional shape of the main body, extends in a longitudinal direction of the main body, and forms an outer circumferential surface of the aerosol-generating device together with the main body.
Absstract of: US20260331506A1
0000 The binder composition for an all-solid-state secondary battery in which a sulfide inorganic solid electrolyte is used contains a polymer including a (meth)acrylic acid alkyl ester monomer unit and an acetic acid ester solvent in which a hydrocarbon group having a carbon number of 6 to 9 is bonded to a non-carbonyl oxygen atom. The (meth)acrylic acid alkyl ester monomer unit includes a first (meth)acrylic acid alkyl ester monomer unit in which an alkyl group having a carbon number of 3 to 8 is bonded to a non-carbonyl oxygen atom and a second (meth)acrylic acid alkyl ester monomer unit in which an alkyl group having a carbon number of 1 to 2 is bonded to a non-carbonyl oxygen atom. A mass ratio of the first (meth)acrylic acid alkyl ester monomer unit relative to the second (meth)acrylic acid alkyl ester monomer unit is 2.1 to 2.5.
Absstract of: US20260331473A1
A lithium secondary battery is provided, having a silicon-based negative electrode, a positive electrode, a separator; and an electrolyte, wherein the positive electrode or silicon-based negative electrode is a pre-lithiated electrode, and wherein the silicon-based negative electrode has a certain silicon discharge capacity use range, and certain upper and lower ends of the silicon discharge capacity.
Absstract of: US20260331697A1
0000 A battery pack includes: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; a pack case configured to house the cell module assembly, and including a venting port on at least one surface of the pack case; and an outer cover that covers an outer surface of the pack case and is arranged apart from the outer surface of the pack case by a prescribed distance. A space between the pack case and the outer cover forms a venting flow path through which a venting gas, generated during a thermal event of the plurality of battery cells, is able to move. The venting gas is discharged to an outside of the battery pack through an opened space formed on at least one end part of the outer cover.
Absstract of: US20260331739A1
0000 A battery pack including a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; a pack case including an internal space, and housing the cell module assembly in the internal space; and a fire extinguishing unit configured to extinguish a thermal event in the plurality of battery cells by supplying a fire extinguishing agent into the pack case when the thermal event occurs in the plurality of battery cells, wherein the pack case includes at least one drain port on at least one of a longitudinal edge and a widthwise edge of a bottom surface of the pack case.
Absstract of: US20260330621A1
0000 A detection method and apparatus for battery housing, a device, a medium, and a product. The method includes: obtaining a first image of a first corner of a battery housing, where the first corner is a rounded corner; extracting a target edge contour of a curved portion of the first corner in the first image; performing curve fitting based on a feature point of the target edge contour to obtain a target curve; and determining whether burrs are present on the first corner based on the target curve.
Absstract of: WO2026219107A1
The present application relates to a dynamic compression coating apparatus, which belongs to the technical field of lithium battery separators. The dynamic compression coating apparatus comprises: a frame; a backing roll, which is arranged on the frame and configured to drive a separator substrate to move continuously; a pressure roll, which is mounted and vertically movable on the frame and is configured to press the separator substrate against the surface of the backing roll, the pressure roll having an air cavity, the air cavity being connected to an air source device that is switchable between supplying air to and extracting air from the air cavity, and a channel structure in communication with the air cavity being provided on the surface of the pressure roll; and a coating roll, which is movably arranged on the frame and is configured to coat an adhesive onto the surface of the separator substrate. In the present application, the possibility of slippage of the separator substrate during coating can be reduced, and the cooperation between the air cavity and the channel structure can achieve two working modes, namely, air film suspension and negative pressure adsorption, so as to adapt to the process requirements of different coating stages, thereby improving the stability of the coating quality.
Absstract of: US20260331642A1
0000 Provided are a battery pack and a vehicle having same. The battery pack includes a frame, a partition assembly, a liquid cooling plate, and a bottom protection plate. The frame is configured to enclose a receiving cavity. The partition assembly is disposed in the frame to divide the receiving cavity into a plurality of receiving sub-cavities. The liquid cooling plate is located at a bottom of the frame, and has a bottom access opening directly facing one of the plurality of receiving sub-cavities. The liquid cooling plate is fixedly connected to the frame and at least part of the partition assembly adjacent to the bottom access opening. The bottom protection plate is detachably connected below the liquid cooling plate, and configured to open and close the bottom access opening.
Absstract of: US20260331651A1
0000 Disclosed is a packaging material for a battery, including lamination structure of: an outer layer consisting of a heat-resistant resin film; a gas barrier layer containing a metal foil; and an inner layer consisting of a composition containing a thermoplastic polyolefin, wherein the slipperiness of the inner layer is enhanced to achieve excellent moldability, causing no leakage of cell electrolytes and thereby ensuring safety. The present invention provides a packaging material for a battery, including a lamination structure of: an outer layer consisting of a heat-resistant resin film; a gas barrier layer containing a metal foil; and an inner layer consisting of composition containing a thermoplastic polyolefin, wherein the composition constituting the inner layer contains an unsaturated secondary fatty acid amide.
Absstract of: US20260331564A1
0000 The present invention relates to a solid electrolyte sheet including a first solid electrolyte layer and a second solid electrolyte layer positioned on the first solid electrolyte layer, wherein the first solid electrolyte layer includes a first solid electrolyte, the second solid electrolyte layer includes a second solid electrolyte, and a density of the first solid electrolyte is greater than a density of the second solid electrolyte.
Absstract of: US20260331593A1
0000 In the present invention, a negative electrode has a non-facing part on the side of the electrode body on the inner end side in the winding direction. The non-facing part has a composite material non-facing part, in which the negative electrode composition layer is formed on at least one surface of the negative electrode core. In the composite material non-facing part, the winding-direction length of a negative electrode composite layer formed on an inner circumference surface of the negative electrode core is 0.3 turns or more along the winding direction of the composite material non-facing part, and the winding-direction length of a negative electrode composite layer formed on an outer circumference surface of the negative electrode core does not exceed ⅔ of the winding-direction length of the negative electrode composite layer formed on the inner circumference surface of the negative electrode core.
Absstract of: US20260331517A1
0000 With respect to a nonaqueous electrolyte secondary battery according to the present disclosure, the positive electrode contains a lithium-containing composite oxide and a sulfonic acid compound that is present on the particle surfaces of the lithium-containing composite oxide; the sulfonic acid compound is represented by formula (I); the negative electrode comprises a negative electrode core body, a first negative electrode mixture layer that is arranged on the surface of the core body, and a second negative electrode mixture layer that is arranged on the surface of the first negative electrode mixture layer; the thickness T1 of the first negative electrode mixture layer and the thickness T2 of the second negative electrode mixture layer satisfy the relational expression 0.1≤T1/(T1+T2)≤0.9; the first negative electrode mixture layer and the second negative electrode mixture layer each contain a negative electrode active material and a binder; the binder content CI in the first negative electrode mixture layer and the binder content C2 in the second negative electrode mixture layer satisfy the relational expression C1>C2. (In the formula, A represents a group 1 element or a group 2 element, R represents a hydrocarbon group; and n is 1 or 2.)
0000
Absstract of: US20260331487A1
0000 The present invention relates to a positive electrode active material for a lithium rechargeable battery, which is a lithium transition metal oxide containing nickel (Ni) and manganese (Mn), wherein the lithium transition metal oxide may be a single particle and has a crystal defect rate of less than 3%.
Absstract of: US20260331698A1
A battery pack and a vehicle including the same are provided. The battery pack is configured to improve energy density and ensure structural stability even when a thermal event occurs. The battery pack includes a cell assembly, a cell case accommodating the cell assembly, the cell case including an open portion at least at one side thereof, and a pack housing to which the cell case is coupled, the pack housing including a venting path facing the open portion.
Absstract of: US20260333470A1
The disclosure relates to a system of at least one power tool, at least one battery pack, and a backend server for interrelating data collected by the power tool and/or the battery pack. The system may encompass a collection of battery packs that are each configured to be interchanged between multiple power tools with varying levels of connectivity to the battery packs. Depending on the level of connectivity, the battery pack may be configured to collect a different level of data that can ultimately be compiled, correlated, and analyzed by a backend server. The disclosure further relates to methods and apparatuses for connecting and communicating with a communication module that is coupled to the power tool, and collecting power tool data from the communication module.
Absstract of: US20260331577A1
A sulfide solid electrolyte includes a crystal phase including a crystal represented by a compositional formula: RaMbScXd, R represents an alkali metal element, M represents an element among elements of Groups 2 to 15 of the periodic table which is capable of forming a four-coordinate structure with S, and M is composed of a total of three or more elements comprising MA which is an element belonging to Group 14 and MB which is an element belonging to Group 15, S represents a sulfur element, and X represents a halogen element, 3≤a≤7, b=1, 3≤c≤6, and 0.1≤d≤2 are satisfied, the crystal includes three or more tetrahedral structures including an MAS4 tetrahedral structure and an MBS4 tetrahedral structure, and a proportion of Ge in M is 0.05 or less in terms of a molar ratio.
Absstract of: US20260331576A1
A sulfide solid electrolyte includes a crystal phase including a crystal represented by RaPbMcM′c′SdXe. M is an element belonging to Groups 2 to 15 of the periodic table and represents an element having an atomic number larger than that of P and capable of forming a four-coordinate structure with S, M′ is an element belonging to Groups 2 to 15 of the periodic table and represents an element having an atomic number smaller than that of P and capable of forming a four-coordinate structure with S, 3
Absstract of: US20260331656A1
0000 The battery cell includes a housing that includes a housing body and an end cover. The housing body includes a first wall that includes a first opening portion and a first body portion sequentially arranged along a first direction. The first direction is parallel to a thickness direction of the end cover. The first opening portion is closer to the opening than the first body portion. The first opening portion includes a plurality of first thickened regions and at least one first transition region. The plurality of first thickened regions are spaced apart along a circumferential direction of the opening. Two adjacent first thickened regions are connected to each other. A maximum thickness of the first thickened region is greater than a thickness of the first body portion, and the maximum thickness of the first thickened region is greater than a thickness of the first transition region.
Absstract of: US20260331560A1
An electrode assembly arranged in the housing of the battery cell includes: a first contact foil on a first side of a solid electrolyte, a second contact foil on a second side of the solid electrolyte, and a first electrode layer between the solid electrolyte and the first contact foil. The electrode assembly is charged by applying a first voltage to the contact foils such that ions are deposited from the first electrode layer onto the second contact foil to form a second electrode layer between the second contact foil and the solid electrolyte. A cut-off voltage is set at which the second electrode layer is maintained between the second contact foil and the solid electrolyte in order to set a minimum pressure in the battery cell.
Absstract of: US20260327946A1
0000 Provided is an electrically driven work machine capable of increasing estimation accuracy of a remaining charge time or a remaining discharge time of a secondary battery. An electrically driven excavator includes a secondary battery, a battery management unit, and a vehicle control unit. The vehicle control unit predicts a transition of a temperature of the secondary battery on the basis of the temperature and a state of charge of the secondary battery detected by the battery management unit, predicts a transition of a current of the secondary battery on the basis of the predicted transition of the temperature of the secondary battery, and estimates the remaining charge time or the remaining discharge time of the secondary battery on the basis of the predicted transition of the current of the secondary battery.
Absstract of: US20260332014A1
0000 An electric device includes: an electromagnetic induction coil; an elastic body containing a magnetized magnetic powder and configured to generate a magnetic field passing through the electromagnetic induction coil and to change a magnetic flux density of the magnetic field when elastically deformed by receiving an external force; a rectifier unit configured to rectify an induced current induced in the electromagnetic induction coil by a change in the magnetic flux density; a load unit configured to operate by receiving the induced current from the rectifier unit; and a case accommodating the electromagnetic induction coil and the elastic body and being extensible and contractible together with the elastic body.
Absstract of: US20260331458A1
0000 A positive electrode contains, as a positive-electrode active material, a lithium transition metal composite oxide that has a layered structure and contains at least 75 mol % of Ni with respect to the total molar quantity of metal elements excluding Li. The lithium transition metal composite oxide is made of secondary particles formed by aggregation of primary particles. At least one selected from the group consisting of Ca and Sr, and at least one selected from the group consisting of W, Mo, Ti, Si, Nb, and Zr, are present at the interface between primary particles inside the secondary particles. An electroconductive auxiliary agent within a positive-electrode compound layer includes at least one selected from the group consisting of particulate carbon materials having an average grain diameter of 20 nm or less and fibrous carbon materials having an average fiber diameter of 20 nm or less, the carbon materials containing carbon.
Absstract of: US20260331505A1
0000 A disclosed positive electrode is a positive electrode for a nonaqueous electrolyte secondary battery. The positive electrode includes a positive electrode mixture layer. The positive electrode mixture layer contains a positive-electrode active material, a conductive material, and a binder. The conductive material includes both carbon black and single-wall carbon nanotubes. The binder includes at least one selected from the group consisting of nitrile group-containing rubber and a cellulose derivative.
Absstract of: US20260331480A1
0000 With respect to a nonaqueous electrolyte secondary battery (10) according to one example embodiment of the present invention, a positive electrode (11) contains, as a positive electrode active material, a lithium transition metal composite oxide that has a layered structure and contains not less than 75 mol % of Ni with respect to the total molar quantity of metal elements excluding Li. The lithium transition metal composite oxide is in the form of secondary particles that are obtained by aggregation of primary particles; and at least one element selected from the group consisting of Ca and Sr, and at least one element selected from the group consisting of W, Mo, Ti, Si, Nb and Zr are present at the interfaces between the primary particles inside the secondary particles. A negative electrode (12) contains, as a negative electrode active material, a silicon-containing material.
Absstract of: US20260331504A1
A disclosed positive electrode is a positive electrode for a nonaqueous electrolyte secondary battery. The positive electrode includes a positive electrode mixture layer. The positive electrode mixture layer contains a positive-electrode active material, a conductive material, and a binder. The conductive material includes both single-wall carbon nanotubes and multiwall carbon nanotubes. The binder includes at least one selected from the group consisting of nitrile group-containing rubber and a cellulose derivative.
Absstract of: US20260331920A1
0000 An energy storage facility includes energy storage devices connected in parallel, and a connection circuit that connects the energy storage devices to an external current supply source or a current supply destination. The connection circuit includes a first current path that is connected to the current supply source or the current supply destination, second current paths branched from the first current path and respectively connected to the energy storage devices, a first current sensor to measure a current flowing through the first current path, and second current sensors to individually measure currents flowing through the respective second current paths. The energy storage facility includes a monitoring server configured or programmed to include a determination device configured or programmed to determine whether or not there is an abnormality in the connection circuit using a measurement result of the first current sensor and measurement results of the second current sensors.
Absstract of: US20260328701A1
0000 A battery cell comprises a battery cell body, tabs and a cover plate, wherein the tabs are arranged between the cover plate and the battery cell body. The tab inspection system comprises: a distance expansion apparatus, a light source, a photographic apparatus and an upper computer, wherein the distance expansion apparatus is configured to expand the distance between the battery cell body and the cover plate, so as to expose a side face of a tab; the light source is configured to light the side face of the tab; the photographic apparatus is configured to acquire a first scanned image containing the side face of the tab; and the upper computer is configured to determine, on the basis of the first scanned image, whether the side face of the tab is fractured.
Absstract of: US20260331555A1
0000 An electrode assembly includes a wound structure and a protective layer, where the wound structure is formed by winding a stacked body including a positive electrode sheet and a negative electrode sheet along a winding direction, a separator being sandwiched between the positive electrode sheet and the negative electrode sheet, and the positive electrode sheet and the negative electrode sheet each including a plurality of bent portions; and an inner side and an outer side of at least one of the bent portions are each attached with the protective layer, where the protective layers on the inner and outer sides of a same bent portion are staggered at least at one end portion along the winding direction.
Absstract of: US20260325900A1
A fire-extinguishing material includes a base material and a fire-extinguishing agent layer formed on at least one surface of the base material. The fire-extinguishing agent layer contains a fire-extinguishing agent and a binder resin, in which the content of the fire-extinguishing agent in the fire-extinguishing agent layer is 60% by mass to 98% by mass relative to the mass of the fire-extinguishing agent layer, and the tensile elongation at break of the binder resin is 45 mm or more.
Absstract of: US20260331624A1
0000 A battery pack includes a first battery module including a plurality of first battery cells; a second battery module including a plurality of second battery cells; a pack housing including an accommodation part in which the first battery module and the second battery module are accommodated together; a partition part that defines an inner wall of the accommodation part; and a pack battery management system (BMS) that controls available capacity of the first battery module and available capacity of the second battery module to be the same as or similar to each other, where the first battery module is cooled by the second battery module.
Absstract of: US20260331587A1
0000 A method of manufacturing an electrode assembly and the electrode assembly prepared by the same are provided. The method includes: unwinding a positive electrode sheet, a separator sheet and an negative electrode sheet from respective roll members; forming a laminate by passing the unwound positive electrode sheet, separator sheet, and negative electrode sheet between a pair of guide rolls; and punching the laminate including the positive electrode sheet, the separator sheet, and the negative electrode sheet, wherein each of the positive electrode sheet and the negative electrode sheet is alternately coated with an active material and a non-conductive material based on a driving direction of the guide rolls, and wherein a portion coated with the non-conductive material is punched in the step of punching the laminate.
Absstract of: US20260331597A1
0000 A method for assembling a battery is described. The battery has a case, a post assembly, a plurality of battery cells, and a first cover. The post assembly includes a plurality of posts. The first cover has a first plurality of openings. The method includes assembling the case, the post assembly, and the plurality of battery cells. The assembling includes coupling the post assembly to the plurality of battery cells by coupling each post of the plurality of posts to a corresponding battery cell of the plurality of battery cells and inserting the plurality of battery cells and the post assembly in the case. The method further includes coupling the first cover to the case. At least one post of the plurality of posts protrudes through at least one opening of the first plurality of openings and extends from the first cover.
Absstract of: US20260331736A1
An electrolyte injection system includes an electrolyte injection device, an upper computer and a control device, where the electrolyte injection device includes at least one electrolyte injection pump; the control device is configured to send to the upper computer pump information of a target electrolyte injection pump currently to be subjected to electrolyte preparation in the electrolyte injection device; the upper computer is configured to: acquire the pump information from the control device; determine, on the basis of the pump information and from among bearing positions in a battery cell tray currently entering the electrolyte injection device, a target bearing position currently corresponding to the target electrolyte injection pump; and determine, on the basis of a first correspondence, a target electrolyte injection parameter corresponding to the target bearing position, with the first correspondence including electrolyte injection parameters respectively corresponding to at least one bearing position.
Absstract of: US20260331611A1
An information processing system is provided. This information processing system comprises a thermoelectric conversion unit and a signal processing unit. The thermoelectric conversion unit is configured so as to generate a thermal gradient by exchanging heat with a device and is configured so as to generate thermoelectric power on the basis of the thermal gradient. The signal processing unit comprises an acquiring unit and a detection unit. The acquiring unit is configured so as to acquire the thermoelectric power. The detection unit is configured so as to detect, on the basis of the thermoelectric power, an abnormal operation of the device accompanied by heat generation.
Absstract of: US20260331927A1
A method, a device and a medium for charging self-monitoring, are provided. The method for charging self-monitoring includes: obtaining a relative position of a charging robot with respect to a charging pile and adjusting a position of the charging robot according to the relative position until charging contacts between the charging robot and the charging pile are in position; obtaining identity information, performing impedance detection on the charging contacts, and determining the identity information based on an impedance detection result; and starting charging.
Absstract of: US20260331489A1
0000 A production method of a positive electrode active material for a lithium-ion secondary battery includes a mixing step of mixing a nickel-containing material containing at least nickel, and a lithium compound, thereby preparing a raw material mixture; a firing step of firing the raw material mixture in an oxidative atmosphere, thereby obtaining a fired product; a water washing step of washing the fired product obtained in the firing step with water, thereby obtaining water-washed powder; and a boron adding step of spraying a boron-containing solution onto the water-washed powder obtained in the water washing step, the boron-containing solution containing a boron-containing material that is at least one selected from a boron simple substance and a boron-containing compound.
Absstract of: US20260331475A1
Provided is an anode material and a battery. The anode material includes an active material including a silicon material and a carbon matrix with pores, where at least part of the silicon material is located into the pores of the carbon matrix. The anode material has a true density of ρ g/cm3 and a total pore volume of V cm3/g, and satisfies: M=ρV/(ρ+V), and 0.020≤M≤0.085.
Absstract of: US20260326391A1
0000 A method for making a tray assembly includes positioning a first component adjacent to a second component. The second component has a lower portion positioned adjacent to the first component and an upper portion spaced from the first component. A top surface of the lower portion is positioned below a top surface of the first component, and a top surface of the upper portion is adjacent to the top surface of the first component such that a gap is defined along the lower portion of the second component beneath the top surfaces of the first component and the upper portion of the second component. The method includes filling the gap with an adhesive and then compressing a pad toward the adhesive such that a continuous top surface of the adhesive extends between the top surfaces of the first component and the upper portion of the second component.
Absstract of: US20260331481A1
0000 A positive electrode material composition includes at least two nickel-iron-manganese-based sodium-ion battery positive electrode active materials, and the nickel-iron-manganese-based sodium-ion battery positive electrode active materials are physically mixed; a mixture of the nickel-iron-manganese-based sodium-ion battery positive electrode active materials further includes a Cu element and a Q element. The positive electrode includes the positive electrode material composition, and the sodium battery includes the positive electrode. The electric device includes the sodium battery.
Absstract of: US20260331495A1
A lightweight battery is provided. The battery includes a separator-integrated electrode in which a separator and an electrode are integrated with each other, and the separator-integrated electrode includes the separator, a carbon particle layer, and a silicon layer positioned between the separator and the carbon particle layer. The silicon layer can be formed by a sputtering method, and the carbon particle layer can be formed by a coating method. Preferably, the separator includes polypropylene, the thickness of the silicon layer is greater than or equal to 100 nm and less than or equal to 200 nm, and the carbon particle layer includes graphite particles.
Absstract of: US20260328304A1
A relief valve includes: a base part laid on a container and including a valve hole and a valve seat; a valve body including an annular contact portion contacting the valve seat; a slide support mechanism including a shaft provided in one of the valve body or the base part and a shaft fitting portion provided in the other, configured to support the valve body linearly movably in an axial direction of the shaft; and a seal member provided in one of the valve seat or the annular contact portion, the other being in contact with the seal member, wherein the slide support mechanism is provided with a clearance that allows the shaft to relatively tilt with respect to the shaft fitting portion and only a portion in a circumferential direction of the seal close contact portion to be in a partial contact state contacting the seal member.
Absstract of: US20260328302A1
0000 A relief valve includes: a base part laid on an opening edge of a discharge hole of a container and including a valve hole facing the discharge hole; a fixing portion provided in the base part to fix the base part to the container; a valve seat provided in the base part to surround the valve hole at a position farther from the valve hole than the fixing portion; a valve body disposed facing the valve hole and including an annular contact portion configured to move toward and away from the valve seat; and an annular seal member sandwiched between the container and the base part to surround the valve hole at a position farther from the valve hole than the fixing portion, wherein the fixing portion includes a plurality of attachment holes through which a plurality of rod-shaped fasteners passing through the container are inserted.
Absstract of: US20260324756A1
0000 An electronic device having a control unit and a first battery, wherein, when a second battery is provided to a cover member attached to a device main body, and a residual power of the second battery is a pre-determined reference value or higher, the control unit switches a supply of power for some electronic components provided to the device main body from the first battery to the second battery.
Absstract of: US20260331650A1
0000 This all-solid-state battery is provided with a solid electrolyte and a resin film for all-solid-state batteries, the resin film being disposed so as to be in contact with at least a part of the solid electrolyte; and the resin film for all-solid-state batteries contains at least one of a water absorbent and a gas absorbent.
Absstract of: WO2026218952A1
The present invention belongs to the technical field of batteries. Disclosed are a secondary battery and an electric device. By controlling the number of big and small secondary particles of a positive electrode active material in a positive electrode sheet, the volume average particle size of a negative electrode active material and the specific discharge capacities of the positive electrode active material and the negative electrode active material to meet the following relations: 1≤H≤40 and H=(n1/n2)Dv50(C1/C2), the positive electrode sheet and the negative electrode sheet are better matched, such that interfacial side reactions can be effectively reduced, the gas production of the secondary battery can be reduced, the diffusion path of lithium ions can be improved, and the stability of the positive active material in the process of tabletting can be improved, thereby significantly improving the crushing resistance of the particles. Moreover, the specific discharge capacities of the positive electrode active material and the negative electrode active material exhibit good adaptability, such that the cycle performance and rate capability of the secondary battery are effectively improved.
Absstract of: US20260331648A1
An electrochemical apparatus includes a housing, an electrode assembly, and a first adhesive component. The electrode assembly is disposed within the housing. The electrode assembly includes a first side surface and a second side surface opposite each other along a first direction, and a third side surface and a fourth side surface opposite each other along a second direction. The second direction is perpendicular to the first direction. The first adhesive component includes a first side portion and a second side portion opposite each other. The first side portion includes a first adhesive region, a first non-adhesive region, and a second adhesive region arranged sequentially. The first adhesive region is adhered to the first side surface. The second adhesive region is adhered to the second side surface. The second side portion includes a third adhesive region. The third adhesive region is adhered to the housing.
Absstract of: US20260331695A1
Provided are a battery cell, a battery including the battery cell, and an electric device. The battery cell includes a housing having a first wall portion and a pressure relief component disposed on the first wall portion. The pressure relief component includes a first groove defining a predetermined pressure relief region and is configured to crack along at least part of the first groove during pressure relief. The pressure relief component further includes a groove group corresponding to the predetermined pressure relief region. The groove group includes a plurality of second grooves spaced apart in a width direction, and the second grooves guide at least a portion of the predetermined pressure relief region to flip to open the predetermined pressure relief region.
Absstract of: WO2026218942A1
Provided are a negative electrode material, a secondary battery, and an electric device. The negative electrode material comprises a carbonaceous material, and satisfies the following relational expression: 0.4≤DV50×S/|P-OI/4.8|×210≤1.1, wherein DV50 μm represents the corresponding particle size when the cumulative volume percentage of the negative electrode material reaches 50%; S m2/g represents the specific surface area of the negative electrode material; P g/cm3 represents the powder compaction density of the negative electrode material under a load of 5 T; and OI represents the degree of graphite orientation of the negative electrode material, and is a peak intensity ratio of a diffraction peak (004) to a diffraction peak (110) in an XRD pattern.
Absstract of: US20260331468A1
0000 A positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electrical apparatus. The positive electrode active material comprises an inner core and a coating layer; the inner core comprises a transition metal oxide; the coating layer is formed on the surface of the inner core; the coating layer comprises a polymer containing a silicon-oxygen bond; on the basis of the total mass of the positive electrode active material, the mass percentage of silicon in the polymer is 0.05%-1%.
Absstract of: US20260331694A1
A battery cell includes a housing, an electrode assembly, a vent valve assembly, and a protective member. The housing is provided with an accommodating cavity; where the housing includes a first wall; the first wall has a first surface and a second surface opposite to each other, the second surface faces outside the battery cell; the first wall is provided with a first vent hole; and the first vent hole extends through the first surface and the second surface. The electrode assembly is accommodated in the accommodating cavity. The vent valve assembly is connected to the first wall and covers the first vent hole. The protective member is detachably connected to the second surface and covers the vent valve assembly.
Absstract of: US20260331723A1
0000 Disclosed are a secondary battery and a battery module, and more particularly a terminal plateless secondary battery and a battery module having an integrated terminal plate and busbar. The secondary battery includes an electrode assembly, a current collection unit electrically coupled to the electrode assembly, a case configured to receive the electrode assembly and the current collection unit, and a terminal unit electrically coupled to the current collection unit, wherein the terminal unit includes an inner terminal portion extending through the case in an inward direction of the case and an outer terminal portion extending in an outward direction of the case, the length of the outer terminal portion being greater than the length of the inner terminal portion.
Absstract of: WO2026218838A1
A multi-layer full-open steel plate and a manufacturing method for a multi-layer full-open steel plate. The multi-layer full-open steel plate comprises a plurality of stacked shaping layers (100) and a framework layer (200) arranged on the uppermost shaping layer (100). An ink storage channel (300) is formed by shaping patterns on the plurality of shaping layers (100), so that the amount of ink passing through the ink storage channel (300) is significantly increased compared with a single-layer structure used by a conventional full-open steel plate, thereby ensuring that during narrow linewidth printing, paste pushed by a squeegee can continuously infiltrate into mesh holes and is stably transferred to a cell, thus ensuring that the supply of the paste is sufficient during printing, so as to ensure full plasticity of fingers and reduce the finger interruption rate.
Absstract of: US20260331554A1
According to the present disclosure, as a usage time of a secondary battery increases, a deformable part may be deformed to suppress deformation near an end of a positive electrode, thereby preventing an adjacent separator from being damaged. The disclosed electrode assembly has a structure, in which a first electrode sheet, a second electrode sheet, and a separator disposed between the first electrode sheet and the second electrode sheet are wound together. The first electrode sheet may include a deformable part disposed to be spaced a predetermined distance from one end of the second electrode sheet in a winding direction and having a shape that protrudes toward a central portion with respect to the wound state. A method for manufacturing the electrode assembly, and a secondary battery comprising the electrode assembly are also disclosed.
Absstract of: US20260327742A1
Provided are a lithium compound for recovering valuable metals and a method for recovering the same. The method for recovering a lithium compound for recovering valuable metals includes: preparing a battery, freezing and forcibly discharging the battery, crushing the battery, and heating the crushed battery material, wherein the heating is performed in a temperature range of 1,100 to 1,400 °C, the heating is performed at a vacuum degree (Log P atm) in a range of −4 to 0, the lithium compound recovered by the heating includes impurities, and the impurities include 1.8 wt % or less (excluding 0 wt %) of Na, 0.06 wt % or less (excluding 0 wt %) of K, 0.62 wt % or less (excluding 0 wt %) of Ca, and 0.47 wt % or less (excluding 0 wt %) of Mg, in % by weight.
Absstract of: US20260333647A1
A battery management system (BMS) includes a circuit board in which a first coupling hole for grounding is defined; a first casing mold that accommodates the circuit board, and includes a bushing part disposed inside a second coupling hole recessed from an outside; and a coupling unit that passes through the first coupling hole and the second coupling hole, and allows the circuit board and the bushing part to be in contact with each other while pressing a top surface of the bushing part. The bushing part includes a vertical part in a direction parallel to the second coupling hole, and a horizontal part extending from an end of the vertical part in a direction perpendicular to a direction in which the vertical part is provided. The coupling unit is electrically connected to a case, in which a plurality of batteries are accommodated, to ground the circuit board.
Absstract of: US20260327150A1
0000 A method for producing a multilayer solid state electrolyte (SSE) including alternating dense layers and porous layers, wherein the number of layers is at least two, the method including: adding a first compound including one or more of an alkali metal and/or an alkaline earth metal and a first binder to a first solvent, thereby obtaining a first mixture; adding a second compound including one or more of an alkali metal and/or an alkaline earth metal, a second binder, and a pore-forming compound to a second solvent, thereby obtaining a second mixture; film-casting the first mixture and the second mixture on a substrate until the number of layers is obtained, thereby obtaining a green (multilayer) structure; debinding the green (multilayer) structure in an atmosphere including at least 20 vol. % oxygen at a temperature between 250 °C and 800 °C, and sintering the green structure, thereby obtaining the multilayer SSE.
Absstract of: WO2026218451A1
The present application relates to the technical field of battery safety monitoring, and discloses a battery early-warning method and system, and a device. The method comprises: when a battery is charged according to a preset charging regime or discharged according to a preset discharging regime in a normal-temperature environment, acquiring a temperature value and a gas pressure value of the battery in real time; selecting, for the battery, a standard gas pressure value and a lithium plating alarm threshold which correspond to a current temperature value, and acquiring a current gas pressure change rate of the battery; and determining whether a current gas pressure value of the battery is less than the standard gas pressure value, if yes, determining that the battery is in a normal operating state, or otherwise, determining whether the current gas pressure change rate of the battery is greater than or equal to the lithium plating alarm threshold, and if yes, determining that the battery is in an abnormal operating state and issuing an early-warning signal. In the present application, the temperature value and the gas pressure value of the battery are acquired in real time, whether the battery is in the abnormal operating state is determined on the basis of the standard gas pressure value and the lithium plating alarm threshold, which correspond to the current temperature value, of the battery, and early warning is performed when the battery is in the abnormal operating state
Absstract of: WO2026218465A1
A porous ceramic matrix composite material having high electrochemical performance and a preparation method therefor. The porous ceramic matrix composite material comprises a porous ceramic composite material and a carbon coating layer coated on the outer surface of the porous ceramic composite material. The porous ceramic composite material comprises a porous ceramic matrix, a dispersed carbon layer dispersedly distributed on the outer surface and pore walls of the porous ceramic matrix, and a silicon nano-layer deposited on the dispersed carbon layer. The silicon nano-layer is composed of closely arranged nano-silicon grains. The average particle size of the nano-silicon grains ranges from 1 nm to 5 nm. The proportion of silicon in the porous ceramic matrix composite material ranges from 20 wt% to 70 wt%. The thickness of the dispersed carbon layer ranges from 1 nm to 20 nm. The porous ceramic matrix composite material is used for preparing a negative electrode sheet and, when applied to a lithium-ion battery, can improve the first-cycle Coulombic efficiency and safety performance of the lithium-ion battery.
Absstract of: US20260331725A1
0000 A secondary battery includes an electrode assembly enclosed within a housing formed by a first and a second packaging portion arranged opposite each other to define a space to accommodate the electrode assembly. The electrode assembly contains an electrode plate with a current collector. A plurality of protruding tabs are provided on one side of the current collector. Along the thickness direction of the battery, some of these tabs overlap and converge to form a connecting portion. This connecting portion consists of a first connecting section, a bent section, and a second connecting section. The bent section links the first and second sections and is bent along the battery's thickness direction, positioned near the first packaging portion. An electrode assembly fixing adhesive is provided between the electrode assembly and the first packaging portion, and is configured to bond the electrode assembly to the first packaging portion.
Absstract of: US20260331717A1
The present disclosure relates to a secondary battery including a coupling structure of a current collector and a cap assembly and is directed to providing a secondary battery capable of improving a structure of the current collector to remove a separate member connecting a terminal and enable a simple connecting process, thereby saving material costs and improving productivity. To this end, the present disclosure provides a secondary battery including a case having an opening formed at a least one end thereof, an electrode assembly accommodated in the case, a current collector electrically connected to the electrode assembly, a terminal electrically connected to the current collector, and a cap assembly installed in the opening of the case, wherein the current collector includes a conductive boss formed to face the terminal of the cap assembly.
Absstract of: WO2026219307A1
A battery thermal runaway suppression method and apparatus, a device, a storage medium and a program product. The method comprises: on the basis of thermophysical parameters corresponding to a battery to be treated during a thermal runaway process, a convective heat transfer coefficient of a freezing medium used for freezing a thermal runaway front of said battery, a preset first length and a thermal runaway front freezing formula, determining a first corresponding relationship between a battery thickness and a second length; then, on the basis of a fourth length of said battery, a preset proportionality coefficient, the first corresponding relationship and the first length, determining the target battery thickness for battery thickness adjustment; and finally, disassembling said battery to obtain an electrode sheet group having the target battery thickness, re-packaging the electrode sheet group to obtain a target battery, placing part of the target battery in the freezing medium, exposing a region of the battery out of the liquid surface of the freezing medium, said region having the first length in a propagation direction of the thermal runaway front, and freezing the thermal runaway front.
Absstract of: US20260331638A1
A thermal regulation device for a battery includes a housing having at least two side walls and a circuit for circulation of the heat transfer fluid, and configured to house the battery including at least two battery cells. The heat transfer fluid circulates around the battery cells being supplied and discharged by input and output collectors. A spacer is installed between the battery cells, at least one of the collectors extends along the side wall. The circuit of the heat transfer fluid is defined at least in part by the spacer, and at least two orifices are arranged on the spacer. Each of the orifices open into the input collector and into the output collector, respectively.
Absstract of: US20260331623A1
A cooling plate for battery thermal management in a battery pack and a process of forming such battery pack is provided. The cooling plate is formed of a composite material in the shape of a hollow structure. This composite material has a composition that includes a thermally conductive filler dispersed within a polymeric matrix. The hollow structure has an external wall with a thickness that is in the range of about 0.3 millimeters (mm) to about 2.5 mm. The hollow structure includes a top section, the top section being in thermal contact with at least one battery; a bottom section; the bottom section being integrally formed with the top section; and one or more channels located between the top section and the bottom section, the one or more channels being configured to allow a fluid to flow there through in order to provide for thermal management of the battery.
Absstract of: US20260331581A1
0000 Provided is a non-aqueous electrolyte including a lithium salt, an organic solvent, and an additive, wherein the additive includes a compound represented by Formula 1, and is excellent in electrode film protection and an O<2 >scavenging effect, so that cycle properties and resistance properties of a lithium secondary battery including the non-aqueous electrolyte may be simultaneously improved,
0000
wherein all the variables are described herein.
Absstract of: WO2026218420A1
The present application relates to the technical field of batteries, and discloses an energy storage system (100). The energy storage system (100) comprises a first compartment (20), a second compartment (30), a control module (40), and a plurality of battery devices (10). The first compartment (20) and the second compartment (30) are stacked in the height direction, the first compartment (20) is located above the second compartment (30), and the size of at least one of the first compartment (20) and the second compartment (30) in the height direction is smaller than the size of a standard container in the height direction. The control module (40) is configured to electrically control a plurality of battery devices in the first compartment (20) and the second compartment (30). In the length direction of a casing (11), electrode terminals (12) are provided at at least one end of the casing (11). The length of the casing (11) ranges from 465 mm to 525 mm, and/or the width of the casing (11) ranges from 49 mm to 60 mm, and/or the height of the casing (11) ranges from 163 mm to 184 mm. The energy storage system (100) has a high volumetric energy density.
Absstract of: WO2026218620A1
The present application relates to the technical field of nano-anode materials for lithium batteries, and specifically disclosed are a network-like silicon@tin disulfide@carbon anode material, a preparation method therefor, and use thereof. The preparation method for a network-like silicon@tin disulfide@carbon anode material comprises: stirring and mixing soluble organosilicon, sodium hydroxide, and deionized water; then adding ethanol, and stirring and mixing to obtain a reaction solution; post-treating the reaction solution to obtain three-dimensional aerogel network-like silica; calcining the three-dimensional aerogel network-like silica with a reducing agent to obtain network-like silicon; mixing the network-like silicon, a tin salt, and oleylamine, then first adding thiol, and then stirring and mixing at 180-200 °C to obtain a reaction solution; and post-treating the reaction solution to obtain the network-like silicon@tin disulfide@carbon anode material. In the present application, by means of double-layer coating of the network-like silicon, the inner core can be protected from external chemical attack, the reactive active sites are increased, and the silicon content is reduced, thereby improving the electrochemical performance of the material.
Absstract of: WO2026218607A1
The present disclosure relates to the field of lithium ion batteries, and in particular, to an integrated battery and a battery safety protection method. The integrated battery of the present disclosure includes: a steel shell provided with a mounting cavity and a protective cavity therein; a sealing ring mounted in the protective cavity of the steel shell; a winding core mounted in the mounting cavity; wherein the winding core is connected to a positive electrode tab and a negative electrode tab, and the negative electrode tab is electrically connected to the negative electrode; a metal ring electrically connected to the positive electrode tab.
Absstract of: WO2026218536A1
The present disclosure relates to the technical field of positive electrode materials. Disclosed are a ternary positive electrode material, a preparation method therefor and a lithium battery. As a polycrystalline ternary positive electrode material is a secondary particle obtained by assembling a plurality of primary particles, the size dr, the arrangement angle θ and the porosity ε of the primary particles, and the distribution proportion formula (I) of large and small particles in the ternary positive electrode material all have significant impacts on the internal stress accumulation and yield limit of the secondary particles caused by anisotropic volume expansion and contraction during charging and discharging of the primary particles. The described product parameters have mutually coordinated impacts, and by using the described parameters to construct an expression of a stability parameter F of the ternary positive electrode material and making F satisfy a specific range, the structural stability of the ternary positive electrode material can be improved, and stress fatigue can be dealt with, so as to reduce the generation of micro-cracks, thus improving the cycle performance of batteries.
Absstract of: WO2026218543A1
The present application belongs to the field of batteries, and relates to a lithium secondary battery, a negative electrode sheet for a lithium secondary battery, and an electric apparatus. The lithium secondary battery in the present application comprises a negative electrode sheet, which comprises a negative-electrode current collector, a first negative-electrode active layer located on at least one side of the negative-electrode current collector, and a second negative-electrode active layer located on the side of the first negative-electrode active layer that is away from the negative-electrode current collector, wherein the first negative-electrode active layer and the second negative-electrode active layer each comprise a first negative-electrode material and a second negative-electrode material, and the first negative-electrode material and the second negative-electrode material each comprise a first graphite material and a second graphite material; a powder OI value of the second graphite material ranges from 1 to 10; the specific capacity and the powder compaction density at 150 MPa of the first negative-electrode material are greater than those of the second negative-electrode material; the specific capacity of the second negative-electrode material is 345-365 mAh/g; and the powder compaction density at 150 MPa of the first negative-electrode material is 1.70-2.10 g/cm3. In the present application, the high kinetic performance of a lithium secondary battery is ensur
Absstract of: US20260331491A1
The present invention relates to a positive electrode active material for a lithium secondary battery, the positive electrode active material comprising a single-particle lithium transition metal oxide containing from 50 mol % to 70 mol % of nickel based on a total moles of transition metals, and satisfying Equation 1 below.Dv50/Dn50≥3.0 Equation 1 In Equation 1, Dv50 is a volume-based average particle diameter of the positive electrode active material, and Dn50 is a number-based average particle diameter of the positive electrode active material.
Absstract of: US20260324755A1
An aerosol-generating device includes an aerosol generator configured to generate an aerosol, a main body in which the aerosol generator is arranged, and a battery pack including a battery configured to supply power to the aerosol generator and a battery case accommodating the battery, wherein one of the main body and the battery pack includes a hook protrusion maintaining a position of the battery pack with respect to the main body, the other one of the main body and the battery pack includes a hook groove into which the hook protrusion is coupled, and the battery pack is detachably coupled to the main body by a sliding movement with respect to the main body.
Absstract of: US20260324736A1
0000 An aerosol generating device according to an embodiment includes a housing including a first accommodation space for accommodating an aerosol generating article, a second accommodation space for accommodating a cartridge in which an aerosol generating material is stored, and a battery accommodation space, a first airflow passage arranged inside the housing and connecting the first accommodation space and the second accommodation space to each other, a first heat dissipation member arranged between the first airflow passage and the battery accommodation space to absorb heat inside the battery accommodation space, and a battery detachably coupled to the battery accommodation space.
Absstract of: US20260331675A1
0000 A battery pack may include a cell unit including a plurality of battery cells, a base plate supporting a bottom surface of the cell unit, a cell unit fixative interposed between the cell unit and the base plate, and including a structural adhesive applied to a portion of the bottom surface of the cell unit and a non-curable filler applied to a remaining portion of the bottom surface of the cell unit, and a cell lower part panel interposed between the base plate and the cell unit fixative. The cell lower part panel may be removably fastened to the base plate to which the cell unit is adhered and fixed by the structural adhesive.
Absstract of: US20260332058A1
A power supply circuit includes a driver, a transformer including a primary winding and a secondary winding, a rectifier, and a filter module. The driver includes a drive pin and a power supply input pin connected to different taps of the primary winding. The secondary winding is connected to an input terminal of the rectifier. An output terminal of the rectifier is connected to a power supply output terminal of the power supply circuit. The filter module includes a drive filter module connected to the drive pin, an input filter module connected to the power supply input pin and the primary winding, an output filter module connected to the power supply output terminal, and/or a primary-secondary filter module connected to a ground terminal connected to the driver and a ground terminal connected to the secondary winding.
Absstract of: WO2026219101A1
A top-cover assembly (100), a battery (200), and an electricity-consumption device (300) are provided. The top-cover assembly (100) includes a lower plastic member (30), a first terminal-post (41), and a first connecting sheet (50) extending linearly in a width direction of the top-cover assembly (100). The lower plastic member (30) includes a lower-plastic-member body (31). The lower-plastic-member body (31) defines a first through-hole (313) extending through the lower-plastic-member body (31) and allowing for the first terminal-post (41) to pass through. The first connecting sheet (50) is connected to the first terminal-post (41). The first connecting sheet (50) is configured to be welded to a first tab of an electrode assembly (220), to enable the first terminal-post (41) to be electrically connected to the electrode assembly (220) through the first connecting sheet (50). The first connecting sheet (50) is stacked with the lower-plastic-member body (31). A centerline (O1) of the first connecting sheet (50) in a length direction of the top-cover assembly (100) is offset from a centerline (O2) of the first terminal-post (41).
Absstract of: WO2026219402A1
Provided in the present invention are an asymmetric solid-state electrolyte membrane, a preparation method therefor, and a use thereof in a battery. The asymmetric solid-state electrolyte membrane comprises: a base membrane, a first coating layer, and a second coating layer, wherein the base membrane has a first surface and a second surface, the second surface is opposite to the first surface, the first coating layer is formed on the first surface of the base membrane and comprises lithium titanium aluminium phosphate, and the second coating layer is formed on the second surface of the base membrane and comprises a solid-state electrolyte material other than lithium titanium aluminium phosphate. By selecting a solid-state electrolyte that is stable at the negative electrode for coating, the problem of LATP degrading the performance of the negative electrode is solved, improving the overall performance of the membrane, and the coating process is compatible with existing production lines without the need for great modification.
Absstract of: WO2026218609A1
The present invention relates to a silicon-carbon composite material, and a preparation method therefor and the use thereof. The preparation method comprises: subjecting a porous graphite raw material to acid pickling and smashing to obtain pretreated porous graphite; subjecting same to vacuum impregnation with a carbon precursor solution, performing centrifugal separation, and then performing a carbonization treatment to fill pores of the porous graphite with carbides; then performing physical activation to form pores in the carbides so as to form a hierarchical pore structure, thereby obtaining a silicon-carbon composite material; performing silicon deposition in a fluidized bed to obtain a uniform nanosilicon layer; and then performing a carbon coating treatment, so as to obtain a silicon-carbon composite material. In the present invention, by using the graphite having relatively low costs as a matrix and by means of the design of a hierarchical pore structure, carbonization-activation synergistic pore formation and the optimization of an interface deposition process, high capacity and long cycle performance of the graphite-based silicon-carbon negative electrode material are achieved, and the graphite-based silicon-carbon negative electrode material is applicable to the fields of power batteries and high-energy-density energy storage, especially the field of lithium-ion batteries, and can reduce the expansion rate of a battery and improve the specific capacity, cycling st
Absstract of: US20260328628A1
The present invention discloses a system for monitoring battery surface temperature based on a dual-spiral optical fiber sensor, including a dual-spiral distributed (DSD) optical fiber being arranged flat on the surface of a battery and including a first spiral structure and a second spiral structure that are opposite in winding directions; the battery is divided into a left part with center A and a right part with center B based on a center point O of the battery, respectively; with point A as spiral starting point, a starting end of DSD optical fiber spirals outward along first direction for a set number of turns, to form first spiral structure; tail end of first spiral structure transitions through point O, spirals inward along second direction for a set number of turns, and then reaches point B as terminal end of the DSD optical fiber, to form the second spiral structure.
Absstract of: US20260330888A1
In a method for transmitting and receiving fault detection counter (FDC) information for a diagnostic trouble code (DTC) and a battery system using the method, the method for transmitting and receiving FDC information for a DTC by a battery system includes: receiving a request message; and transmitting a response message corresponding to the request message, wherein a data information area of the request message includes a data delimiter and diagnostic information data, the data delimiter is a first type for requesting a read of an FDC corresponding to each of at least one piece of DTC information included in the request message, or a second type for requesting a read of a plurality of FDCs according to a bitmap, and the bitmap is a list in which a plurality of pieces of DTC diagnostic information match a plurality of bits constituting the diagnostic information data.
Absstract of: US20260327405A1
A two-component composition, including between 3 and 15 wt.-% of at least one organic polymer containing reactive silane groups, between 70 and 92 wt.-% of at least one filler, between more than 0 to 2 wt.-% of drying agent, between more than 0 to 2 wt.-% of retarder, optionally at least one plasticizer, optionally additional organosilanes, optionally at least one catalyst for the curing of silane-functional polymers, wherein the drying agent is propyltrimethoxysilan and that the retarder is selected from the list consisting of phenylmethoxysilan, vinyltrimethoxysilan, octyltrimethoxysilan, propytrimethoxysilan, and any mixture of these retarders. The two-component composition can be formulated to show excellent thermal conductivity and is particularly suitable for battery and electronics assembly and at the same time offers long open time and fast curing behavior.
Absstract of: US20260331696A1
0000 The present application provides a battery case, a battery, and a battery pack. The battery case includes a bottom plate and an enclosure plate, the enclosure plate and the bottom plate together define a receiving chamber with an opening, and the opening is disposed opposite to the bottom plate. The bottom plate has a center point and an explosion-proof score, the explosion-proof score has an inner edge closest to the center point and an outer edge farthest from the center point. A distance between the inner edge and the center point is greater than or equal to ½ of a radius of the bottom plate, and a distance between the outer edge and the center point is less than or equal to ⅘ of the radius of the bottom plate.
Absstract of: WO2026218443A1
The present disclosure relates to the technical field of batteries, and provides a battery apparatus and an electric device. The battery apparatus comprises a case, at least two battery cells, and a heat exchange assembly. The at least two battery cells are arranged in the case. The heat exchange assembly comprises at least two heat exchange members; at least one heat exchange member is configured as a flexible member; at least one heat exchange member is configured as a rigid member; the flexible member and the rigid member are stacked to define a medium flow channel; the medium flow channel is used for conducting a heat exchange medium; the heat exchange medium is used for exchanging heat with the at least two battery cells; and the rigid member is configured as a part of the case.
Absstract of: WO2026218707A1
A battery device (100), comprising a box (20), a heat exchange assembly (30), and a plurality of battery cells (10), wherein the plurality of battery cells (10) are arranged in the box (20); and the heat exchange assembly (30) comprises a heat exchange member (31) and a current collector (32). At least one medium flow channel (313) is provided inside the heat exchange member (31), the at least one medium flow channel (313) is configured for the passing of a heat exchange medium, and the heat exchange medium is configured to exchange heat with the plurality of battery cells (10). The current collector (32) is provided with a current collection space (323) and a liquid-passing port (324), which is in communication with the current collection space (323), and the current collection space (323) is in communication with at least part of the medium flow channel (313). At least part of the heat exchange member (31) and/or at least part of the current collector (32) are/is configured as a rigid structure, and at least part of the heat exchange member (31) and/or at least part of the current collector (32) are/is configured as a flexible structure, such that the heat exchange member (31) is flexibly connected to the current collector (32); the elastic modulus of the rigid structure is greater than that of the flexible structure; and the heat exchange member (31) comprises a heat exchange body (311), wherein the heat exchange body (311) is configured as a rigid structure, and the mediu
Absstract of: WO2026219077A1
Provided in the present application are a thermal management system and a vehicle. The thermal management system comprises: a heating loop, a waste heat recovery loop and a battery thermal management loop, the heating loop being provided with a first heat exchanger and a proportional valve; the waste heat recovery loop is in heat exchange connection with the first heat exchanger, the battery thermal management loop is connected to a heat exchange component of a battery, and the heating loop and the battery thermal management loop are connected by means of a first multi-way valve. The thermal management system further comprises a control device, and the control device is used for controlling heating of the battery, comprising: determining whether the battery needs to be heated; determining whether a heat source satisfies a heat exchange requirement; and if the battery needs to be heated and the heat source satisfies the heat exchange requirement, enabling the heating loop to exchange heat with the waste heat recovery loop, and enabling the heating loop to be communicated with the battery thermal management loop. In the solution of the present application, waste heat generated by the heat source is introduced to heat the battery, such that the heat utilization rate of the thermal management system is higher, thus reducing overall energy consumption.
Absstract of: US20260328711A1
0000 A battery defect inspection device, method, and apparatus are disclosed. The battery defect inspection device includes a ray source, a detector, and a supporting component between the ray source and the detector. A battery under inspection is configured to be located on a supporting surface of the supporting component. The battery defect inspection device further includes a rotation mechanism. The rotation mechanism is configured to rotate the supporting component along a preset rotation axis, or is configured to rotate the ray source and the detector about a preset rotation axis, such that the optical axis of the rays emitted from the ray source is projected obliquely onto a surface of the battery under inspection. At least an included angle between an end surface of the battery under inspection and a plane on which the detector is located can be flexibly adjusted according to the needs of different inspection scenarios.
Absstract of: US20260327836A1
0000 Disclosed herein is a method for pretreatment of substrates containing copper and/or alloys thereof, the method including contacting at least one surface of the at least one substrate, the surface being made of copper and/or at least one alloy thereof, at least in portion with an aqueous composition and thereby forming a film at least in portion on the surface. Also disclosed herein are a method of applying at least one coating film onto the surface of the pretreated substrate, a substrate obtainable by one of these methods, current collectors, conductors, copper clad laminates, anode materials and battery cells obtainable therefrom, and a use of the aqueous composition for electrolytically forming films on substrates made of copper and/or alloys thereof.
Absstract of: US20260331612A1
A temperature acquisition device, a battery management system, and a battery device are provided. The temperature acquisition device includes an acquisition module and a control module. The acquisition module is connected to a cell of a battery assembly and configured to acquire temperature information of the cell and a first electric signal of the cell. The control module is connected to the acquisition module and configured to determine whether the position of the acquisition module is a preset position according to the first electric signal of the cell.
Absstract of: WO2026219316A1
A lithium-ion battery. The battery comprises a positive electrode sheet and a negative electrode sheet; the positive electrode sheet comprises a positive electrode active material layer, and the modal pore diameter r1 of the positive electrode sheet is 50-90 nm; the negative electrode sheet comprises a negative electrode active material layer, and the modal pore diameter r2 of the negative electrode sheet is 900-1500 nm.
Absstract of: WO2026218399A1
Provided in the present application is an energy storage system. The energy storage system comprises a plurality of battery devices, a first compartment, a second compartment, a control module, a thermal management module and a converter device. The battery devices are accommodated in both the first compartment and the second compartment, the first compartment is located above the second compartment, and the dimension of at least one of the first compartment and the second compartment in the height direction is smaller than the dimension of a standard container in the height direction. The first compartment and the second compartment accommodate the control module and the thermal management module. The converter device is located outside the first compartment and the second compartment, and the converter device is electrically connected to the battery devices. Each battery device comprises battery cells, each of which comprises a casing and electrode terminals, wherein the width of the casing and the height of the casing are both smaller than the length of the casing, a plurality of battery cells are arranged in the width direction of the casing, and the electrode terminals are arranged on at least one end of the casing in the length direction of the casing. Such an energy storage system can have a high space utilization rate, thereby increasing the volumetric energy density of the energy storage system.
Absstract of: US20260331460A1
Provided are a positive electrode material, a method for preparing the positive electrode material, a positive electrode plate, a battery, and an electric device. The positive electrode material includes an inner core and a shell coating the inner core, the inner core and the shell each include primary particles, most of the primary particles in the inner core are distributed in the radial direction of the inner core, and the distribution of most of the primary particles in the shell is different from the radial distribution in the inner core. The particle strength of the positive electrode material is improved, thereby improving the cycle life, high-temperature storage performance, and energy density of the battery.
Absstract of: WO2026218716A1
Embodiments of the present disclosure provide a heat exchange assembly, a battery apparatus, and an electric device. The battery apparatus comprises a housing, a plurality of battery cells, and a heat exchange assembly. The heat exchange assembly comprises at least two heat exchange members. At least one heat exchange member is configured as a flexible member, and at least one heat exchange member is configured as a rigid member. At least one of the flexible member and the rigid member comprises a hot melt layer, and the hot melt layer is connected to the other one of the rigid member and the flexible member; at least one of the rigid member and the flexible member is provided with a connection structure; the connection structure is connected to the hot melt layer, and the connection structure comprises at least one of a roughened layer, a frosted layer, and a reinforcing layer. The heat exchange assembly for the battery apparatus provided in the embodiments of the present disclosure comprises a flexible member and a rigid member, the rigid member and the flexible member are connected by means of a hot melt layer, and at least one of the rigid member and the flexible member is provided with a connection structure connected to the hot melt layer, thereby helping to improve the connection strength between the rigid member and the flexible member, and thus improving operational reliability.
Absstract of: WO2026218713A1
Provided in the embodiments of the present disclosure are a heat exchange assembly, a battery device and an electric device. The battery device comprises a box, a heat exchange assembly and a plurality of battery cells, wherein the plurality of battery cells are arranged in the box; and the heat exchange assembly comprises a connector and at least two heat exchange members. At least one heat exchange member is configured as a flexible member, at least one heat exchange member is configured as a rigid member, and the elastic modulus of at least partial region of the flexible member is less than the elastic modulus of the rigid member. The flexible member and the rigid member are stacked to form at least one medium flow channel, the at least one medium flow channel is configured for the passing of a heat exchange medium, and the heat exchange medium is configured to exchange heat with the plurality of battery cells. The connector is provided with a connecting channel, the connector is connected to the rigid member, and the connecting channel is in communication with the medium flow channel. The rigid member is provided with a connection port, which is in communication with the medium flow channel, and the connector is arranged at the connection port and is connected to at least the side of the rigid member facing the flexible member.
Absstract of: WO2026218712A1
Embodiments of the present disclosure provide a heat exchange assembly, a battery device, and an electric apparatus. The battery device comprises a case, a heat exchange assembly, and a plurality of battery cells. The plurality of battery cells are disposed in the case. The heat exchange assembly comprises at least two heat exchange members. At least one of the heat exchange members is configured as a flexible member, and at least one of the heat exchange members is configured as a rigid member. The flexible member and the rigid member are stacked to form at least one medium flow channel. The flexible member comprises a metal layer and an insulating layer which are stacked, the insulating layer at least covering the side of the metal layer facing away from the rigid member. The heat exchange assembly further comprises an insulating structure, the insulating structure covering the outer peripheral surface of the metal layer.
Absstract of: US20260331930A1
0000 Disclosed are a cell balancing method and a battery system providing the same, the system including: a battery including a plurality of battery cells; a monitoring unit waking up at every short cycle and performing a first low power mode where cell balancing is performed for each of the plurality of battery cells based on a predetermined first cell balancing performance condition, and waking up at every long cycle that is longer than the short cycle by a predetermined period and performing a second low power mode where the cell balancing is performed for each of the plurality of battery cells based on a second cell balancing performance condition when a period extension condition is satisfied; and a control unit instructing the monitoring unit to enter the first low power mode, and then entering a sleep mode where no predetermined operation is performed when a condition for entering low power mode including the first low power mode and the second low power mode is satisfied.
Absstract of: US20260326413A1
0000 A flexible insulating member is described. The insulating member can be a single layer or can include a first layer having aerogel and a first fibrous component, and a second layer that is a mat having a second fibrous component. The first layer and second layer are adhered together. The flexible insulating member is non-flammable per UL94 V0 and has a thermal conductivity at 25° C. of less than 40 mW/m·K, and has a thickness of at least 0.3 mm. Methods of making the insulating member are further described along with uses for the insulating member.
Absstract of: US20260328857A1
0000 Provided is a secondary battery deterioration prediction system including: an acquisition unit that acquires, in each operation condition, a relationship between a charging status and an open circuit voltage of a secondary battery and a relationship between the charging status and an internal resistance of the battery; an internal state diagnosis unit that diagnoses, based on the acquired relationships, a deterioration state of a positive electrode and a negative electrode of the secondary battery in each operation condition; a life prediction formula generation unit that generates a life prediction formula based on a time series change in the obtained deterioration state; and a deterioration calculation unit that calculates deterioration of the secondary battery based on the life prediction formula. The life prediction formula generation unit generates a life prediction formula based on a time series change in a deterioration state of the positive electrode and the negative electrode in a case where a load is applied to the secondary battery.
Absstract of: US20260331616A1
The present invention relates to a process for separating Li and Na ions from sulfate-containing solutions, and a device for carrying out the process.
Absstract of: US20260331471A1
0000 The present invention relates to a method for producing a carbon enriched material, said method comprising the steps of: a) providing lignin; b) mixing the lignin with a recirculated carbon enriched material fraction to obtain a lignin-carbon mixture; c) forming an agglomerated lignin-carbon composite material comprising lignin, the recirculated carbon enriched material fraction and optionally at least one additive; d) subjecting the agglomerated lignin-carbon composite material to heat treatment at one or more temperatures in the range of from 300 to 1500 °C, wherein the heat treatment is carried out for a total time in the range of from 30 minutes to 10 hours, so as to obtain a carbon enriched material; e) milling the obtained carbon enriched material to so as to reduce the average particle size of the carbon enriched material, and to obtain at least a first fraction of a carbon enriched material, and a second fraction of a carbon enriched material; and f) recirculating at least a part of the first fraction obtained in step e) to step b).
Absstract of: US20260326569A1
A vehicle includes a chassis, a tractive element coupled to the chassis, a cab coupled to the chassis and configured to support an operator, a body coupled to the chassis and offset longitudinally rearward from the cab, such that a volume is defined between the cab and the body, an electric motor configured to drive the tractive element to propel the vehicle, a secondary electrical load, a battery configured to supply electrical energy, and a power distribution unit configured to direct the electrical energy from the battery to the electric motor and the secondary electrical load. The power distribution unit is positioned in the volume defined between the cab and the body.
Absstract of: US20260331690A1
an all-solid-state rechargeable battery according to an embodiment may include an all-solid-state cell including a positive electrode, a negative electrode, and a solid electrolyte layer, an all-solid-state case configured to contain the all-solid-state cell, a pair of fluid-containing members containing a fluid for pressurizing the all-solid-state cell, and in contact with an interior surface of the all-solid-state case, an inlet/outlet valve configured to introduce the fluid into an interior of the fluid-containing member and discharge, and a fluid supply unit connected to the inlet/outlet valve, and configured to supply the fluid to the fluid-containing member.
Absstract of: US20260330893A1
In an early warning method for a starter battery, state information data of a starter battery provided by a battery management system of a vehicle is obtained. The state information data includes at least one of voltage data, current data, temperature data and charging data. In the method, whether the starter battery is abnormal is detected based on the state information data. When the starter battery is abnormal, abnormal pre-alarm information is sent to a manufacturer service platform for the starter battery or a user terminal paired with the vehicle. Apparatus and non-transitory computer-readable storage medium counterparts are also contemplated.
Absstract of: WO2026218702A1
Provided in the embodiments of the present disclosure are a heat exchange assembly, a battery apparatus and an electrical apparatus. The battery apparatus comprises a box assembly, the heat exchange assembly and a plurality of battery cells. The plurality of battery cells are arranged in the box assembly. The heat exchange assembly comprises at least two heat exchange members, at least one heat exchange member being provided as a flexible member, and at least one heat exchange member being provided as a rigid member; and the flexible member and the rigid member are stacked to form at least one medium flow channel, the at least one medium flow channel being used for guiding a heat exchange medium, and the heat exchange medium being used for exchanging heat with the plurality of battery cells. The flexible member comprises a metal plasticized film. A partial region of the rigid member is recessed to form at least one weight reducing recess. The flexible member has a relatively light mass, which helps to reduce the weight of the heat exchange assembly. Recessing a partial region of the rigid member to form the at least one weight reducing recess helps to further reduce the weight of the heat exchange assembly.
Absstract of: WO2026218520A1
The present invention relates to the field of particle modification, and relates to soft ball milling coated modified particles, a preparation method therefor and a use thereof. The present invention provides coated modified particles and a preparation technology therefor. The preparation raw materials of the coating modified particles comprise polymer pellets, particles to be coated, and a functional additive; by using the polymer pellets as a soft ball milling friction medium, and by means of collision and friction adhesion with the particles to be coated and the functional additive, a pure polymer coating layer or a composite coating layer of a polymer and the functional additive is formed on the surface of the particles to be coated, wherein the surface hardness or elastic modulus of the polymer is less than the surface hardness or elastic modulus of the particles to be coated, and the maximum size of the geometric shape of the particles to be coated is less than the minimum size of the geometric shape of the polymer pellets. The present invention has significant advantages such as wide applicability, strong scalability, low processing costs, green and low‑carbon performance, and thus has good application prospects.
Absstract of: WO2026218475A1
Provided in the embodiments of the present disclosure are a battery apparatus and an electric device. The battery apparatus comprises a case, a pouch battery module, a protective shell, and at least one flexible member, wherein a battery cell is disposed within the case, the battery cell comprises a casing and an electrode assembly, the casing being configured as a flexible casing; a cavity opening on at least one side is formed inside the protective shell, and at least one battery cell is arranged inside the cavity; and the flexible member and the protective shell are stacked, at least one medium flow channel being formed between the flexible member and the protective shell.
Absstract of: WO2026218647A1
Provided in the embodiments of the present disclosure are a heat exchange assembly, a battery device and an electric apparatus. The battery device comprises a case, a battery cell group, and a heat exchange assembly, wherein the heat exchange assembly comprises at least two heat exchange members, and the at least two heat exchange members are stacked in a first direction to form at least one medium flow channel; and at least one heat exchange member is configured as a rigid member, and in a second direction, the rigid member comprises at least one rigid section and at least one flexible section connected to the rigid section.
Absstract of: US20260331459A1
A positive electrode is characterized in that: the positive electrode mixture layer contains, as a positive electrode active material, a lithium-containing transition metal composite oxide having a layered structure; the lithium-containing transition metal composite oxide is in the form of secondary particles formed by aggregation of primary particles; a sulfonic acid compound represented by formula (I) is present on the surface of each of the secondary particles; and the positive electrode mixture layer includes a first compound containing at least one element of Ca and Sr, and a second compound containing P, or includes a phosphoric acid salt containing at least one element of Ca and Sr.
Absstract of: US20260331663A1
A battery pack includes: a battery block that includes a battery cell that includes an opening of a discharge valve on a first end surface of the battery cell; and an outer covering case that houses the battery block. The outer covering case includes a recessed and protruding portion on an opposite surface of the outer covering case that is opposite to the first end surface of the battery cell. The recessed and protruding portion includes a top portion closer to the first end surface of the battery cell and a bottom portion that is farther away from the first end surface of the battery cell, and the top portion and the bottom portion are different in height in a direction perpendicular to the first end surface of the battery cell.
Absstract of: US20260331704A1
An electrode assembly including a negative electrode structure and a positive electrode alternately stacked is provided. The negative electrode structure comprises a negative electrode comprising lithium metal disposed between two notched separators, and the negative electrode is exposed to an outside through a notching area of the notched separators. As a tab can be formed without cutting or welding of the negative electrode, the electrode assembly has not only improved processability but also a stable structure, and thereby provides an effect of improving the performance of the battery.
Absstract of: US20260331493A1
0000 There is provided a composition for lithium-ion battery cathode and a method for producing the composition. There is also provided an electrode comprising an active material layer formed from the composition on a current collector.
Absstract of: US20260331508A1
A cured product for a lithium-ion secondary battery contains a water-soluble polymer crosslinked with a crosslinking agent. The water-soluble polymer has a carboxy group and a COOX group formed by ion exchange of a part of the carboxy groups. The crosslinking agent is a compound containing a metal capable of having a six-coordinate structure.
Absstract of: US20260331556A1
An electronic device is provided. The electronic device includes a housing, and a battery assembly disposed in the housing and including a battery cell and a cover member disposed to surround at least a portion of the battery cell, wherein the battery cell including curved regions on both sides includes a cathode including a cathode current collector and cathode active material coating portions disposed on both surfaces of the cathode current collector, an anode including an anode current collector and anode active material coating portions disposed on both surfaces of the anode current collector, and a separator disposed between the cathode and the anode, wherein among the cathode active material coating portions, a cathode active material coating portion disposed adjacent to a center of the battery cell includes a first pattern portion that is located in the curved regions and is a combination of a plurality of unit patterns at least a portion of which are engraved and repeated.
Absstract of: US20260332454A1
0000 A battery management system for managing a cell stack. The battery management system includes: a plurality of monitoring circuits that monitor the cell stack; and a management circuit that is connected to each of the plurality of monitoring circuits via wireless communication, and manages the cell stack. In the battery management system, at least one of the management circuit or each of the plurality of monitoring circuits includes a measurement circuit for measuring Time of Flight (TOF) between the management circuit and each of the plurality of monitoring circuits via impulse response ultra-wide band (IR-UWB) communication.
Absstract of: WO2026218508A1
The present invention relates to a charging protection circuit and a charger. The charging protection circuit comprises: a battery voltage sampling module connected to a battery, and a reference voltage module, a charging control module, and a switch module. The switch module is configured to connect a charging power supply and the battery. A first input terminal, a second input terminal, and an output terminal of the charging control module are respectively connected to the battery voltage sampling module, a first terminal of the reference voltage module, and the switch module. The charging control module is configured such that, when the voltage of the battery is less than a first reference voltage, the charging control module controls the switch-on and switch-off of the switch module, so that the battery is maintained in a first charging stage for charging; and when the voltage of the battery is greater than the first reference voltage, the charging control module switches the battery from the first charging stage to a second charging stage, and controls the switch-on and switch-off of the switch module, so that the battery is maintained in the second charging stage for charging. The charging protection circuit can protect a battery charging process.
Absstract of: US20260331583A1
0000 An electrochemical apparatus includes a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a negative electrode current collector and a negative electrode active material layer located on at least a part of a surface of the negative electrode current collector. An areal density of the negative electrode active material layer is cw mg/mm<2>, where 8.44≤cw≤10.38. Based on a mass of the electrolyte, the electrolyte includes: ethylene carbonate with a mass percentage of A %, propylene carbonate with a mass percentage of B %, diethyl carbonate with a mass percentage of C %, ethyl propionate with a mass percentage of D %, and propyl propionate with a mass percentage of E %; where 1≤A/B≤3, and 2≤(E+D)/C≤8.
Absstract of: US20260331595A1
An electrochemical apparatus, including an electrode assembly, which includes an electrode plate assembly, a first tab, and a second tab. A first electrode plate includes a first current collector and a first active material layer, a first region of a winding tail section of the first current collector is connected to the first tab. A second electrode plate includes a second current collector and a second active material layer, a second region of a winding tail section of the second current collector is connected to the second tab. A sum of equivalent magnetic field strengths of the first current collector F1 and a sum of equivalent magnetic field strengths of the second current collector F2 satisfy: |F1−F2|≤4×10−5, which can better reduce an axial magnetic field at an end face of a wound structure, thereby further reducing interference of the electrochemical apparatus to the electrical device.
Absstract of: US20260331601A1
Disclosed herein is an electrochemical cell comprising an in situ formed intermetallic layer comprising the active metal of the electrodes and one or more metallic elements. The intermetallic layer of the disclosed electrochemical cell is disposed between an electrode and a solid-state electrolyte. Methods of making the same are also disclosed.
Absstract of: US20260327872A1
0000 The present invention refers to a nonwoven mat for thermal insulation and protection from fire, a method for the preparation of said nonwoven mat, a partition member, a battery housing and a battery pack; and to the use of the nonwoven mat, the battery spacer and the battery housing for thermal insulation and protection from fire.
Absstract of: US20260331614A1
0000 A battery cell formation device according to one example includes a jig including a plurality of pressure plates movably provided to pressurize a plurality of battery cells, a gas remover provided to be movable together with a pressure plate of the plurality of pressure plates, and coupled to the pressure plate to face a gas pocket of the battery cell in contact with the pressure plate, and a position adjuster provided to adjust the position of the gas remover at the pressure plate.
Absstract of: US20260331719A1
0000 A connection structure, a cover assembly and a battery are provided. The connection structure includes a tab connection portion and a pole connection portion that are bend-connected. One side of the tab connection portion adjacent to the pole connection portion is arranged facing a core pack. One side of the tab connection portion facing away from the pole connection portion is configured to be welded with a tab protruding from the core pack. The pole connection portion is configured to connect a pole of the core pack. A thickness of the tab connection portion is greater than a thickness of the pole connection portion, so that a distance from the tab welded to the tab connection portion to a side surface of the core pack where the tab is located is greater than the thickness of the pole connection portion.
Absstract of: US20260331608A1
Back-contact solar cell includes first polarity doped layers and second polarity doped layers, stacked on back surface of a silicon substrate, arranged at intervals in a first direction, and extending in a second direction; first fine gates on the first polarity doped layers and second fine gates on the second polarity doped layers; and in the second direction, third polarity doped layers disposed below the first fine gates, and located between back-surface passivation film (BSPF) layers and the first polarity doped layers. At positions corresponding to the third polarity doped layers, the first fine gates are in contact with the third polarity doped layers through the BSPF layers. Between adjacent third polarity doped layers, the first fine gates are in contact with the first polarity doped layers through the BSPF layers. The second fine gates at least partially penetrate through the BSPF layers to contact the second polarity doped layers.
Absstract of: US20260331691A1
0000 A battery cell, a battery and an electric device. The battery cell includes a casing, a breathable membrane assembly, and a one-way valve. The housing has a wall portion, where the wall portion is provided with a first vent hole and a second vent hole arranged at intervals, and the first vent hole and the second vent hole each communicate the inside of the housing with the outside of the housing. The breathable membrane assembly is disposed on the wall portion and covers the second vent hole. The one-way valve is disposed on the wall portion and covers the first vent hole.
Absstract of: WO2026218477A1
The present disclosure relates to the technical field of lithium-ion batteries, and in particular to a long-cycle positive electrode material, a preparation method therefor, and a lithium-ion battery. The long-cycle positive electrode material comprises secondary particles formed by accumulating primary particles, and the positive electrode material satisfies the following relational expression (I): α+1000×β-(D/80)1/2≤1.2(I), wherein α is the long-axis particle size distribution ratio, which refers to a relationship among long-axis particle size distribution D10, D50 and D90 of the primary particles, and satisfies the following relational expression (II): α=(D90-D10)/D50(II), wherein β is the microstrain of the positive electrode material, and D is the grain size of the positive electrode material in the unit of nm. By means of coordinated regulation and control, the present disclosure allows the grain size, the size of the primary particles, and the microstrain to satisfy the specific relational expressions, thus inhibiting particle cracking, alleviating structural degradation, and improving the cycle performance of the positive electrode material.
Absstract of: US20260331494A1
0000 The compaction index of the lithium iron phosphate cathode material is determined with a specific method, the compaction index is controlled to fall within a specific range, and the average circularity of larger particles within a range of Dv50-Dv100 is maintained within an appropriate range. Such lithium iron phosphate cathode material exhibits superior particle mobility, enabling rapid particle movement and rearrangement during compaction, facilitating formation of a cathode sheet with high compacted density, and improving the charge and discharge capacity of a battery. Furthermore, particle fracture during compaction can be avoided, imparting high fracture resistance to the material. The lithium-ion battery including the lithium iron phosphate cathode material provided in the present disclosure has both high energy density and high capacity retention.
Absstract of: US20260328849A1
0000 An information terminal acquires a plurality of abnormal state items indicating a state item in which an abnormal value is detected among a plurality of state items indicating a plurality of states of a plurality of batteries, and displays the plurality of acquired abnormal state items and displays a monitored state item, which is an abnormal state item that needs to be handled, among the plurality of abnormal state items, in a mode different from other abnormal state items.
Absstract of: US20260331678A1
The power tool includes a housing and a locking assembly. The housing is provided with a battery pack mounting portion detachably connected to a battery pack, which provides electrical energy to the power tool. The locking assembly includes a locking tongue, a locking tongue receiving portion, and a trigger member. The locking tongue and trigger member are movably disposed at one of the housing and the battery pack, and the locking tongue receiving portion is disposed at the other. The locking tongue engages with the locking tongue receiving portion to lock the battery pack relative to the housing, and disengages to unlock it. An external force applied to the trigger member generates at least two different actions that directly or indirectly drive the locking tongue to move relative to the locking tongue receiving portion, unlocking the battery pack relative to the housing.
Absstract of: US20260331509A1
0000 A secondary battery includes a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer formed on at least one surface of the negative electrode current collector. The negative electrode film layer has a first surface away from the negative electrode current collector and a second surface arranged opposite to the first surface. A thickness of the negative electrode film layer is denoted as H. A region within a thickness range from the second surface of the negative electrode film layer to 0.3H is denoted as a first region of the negative electrode film layer. A region within a thickness range from the first surface of the negative electrode film layer to 0.3H is denoted as a second region of the negative electrode film layer. The first region includes a first binder. The first binder is a linear binder.
Absstract of: US20260331571A1
A lithium secondary battery improved in an output characteristic, a low-temperature characteristic, and the like. The lithium secondary battery includes: a positive electrode, a negative electrode, and an electrolyte containing a lithium salt and a non-aqueous organic solvent, wherein the positive electrode includes a positive electrode current collector; and an active material layer that is formed on the positive electrode current collector and includes a positive electrode active material, a conductive material and an oxide-based solid electrolyte having a lithium ion source, and wherein the positive electrode active material and the oxide-based solid electrolyte are dispersed in the active material layer in the form of particles, and the average particle size (D50) of the particles satisfies a fixed ratio.
Absstract of: US20260327082A1
The present invention relates to a heat control member including a wet gel blanket, and a battery including the heat control member.
Absstract of: US20260331465A1
A negative electrode active material contains: a silicon-based active material (A) containing SiOx (in the formula, x is a number satisfying 0.5≤x≤1.6); a carbon-based active material (B) composed of secondary particles formed by aggregation of primary particles; and a carbon-based active material (C) composed of primary particles that do not form secondary particles. D10A is 3 μm or more, and if the maximum value of D10 among values of D10A, D10B, and D10C is defined as D10max, and the minimum value is defined as D10min, the value of D10max/D10min is 2.5 or less. If the maximum value of D90 among values of D90A, D90B, and D90C is defined as D90max, and the minimum value is defined as D90min, the value of D90max/D90min is 2.0 or less.
Absstract of: US20260331685A1
0000 A battery module includes a cell assembly including a plurality of battery cells stacked on each other; a module case configured to store the cell assembly in an inner space and having a venting hole formed thereon; and a cover member including a plurality of fire-resistant layers each having a discharge slot and coupled to the outer surface of the module case such that the venting hole and the discharge slot communicate with each other. The discharge slot of one fire-resistant layer and the discharge slot of the other fire-resistant layer facing the same may be formed to extend in directions in which they intersect each other. The venting hole may be formed so as not to overlap the intersection of the discharge slots.
Absstract of: WO2026218423A1
The present disclosure relates to the technical field of lithium batteries, and discloses a modified ternary positive electrode material, a preparation method therefor, a positive electrode sheet, and a lithium battery. The modified ternary positive electrode material provided by the present disclosure has a dual coating layer, wherein an inner layer is coated with Li2ZrO3, an outer layer is coated with AlPO4, and the Li2ZrO3 of the inner layer is a fast lithium-ion conductor, which improves lithium-ion interfacial kinetics and improves rate performance of the ternary positive electrode material; the AlPO4 of the outer layer, by means of strong covalent interaction between PO4 3- and Al3+, allows for effective resistance against electrolyte corrosion, thereby reducing the occurrence of surface side reactions. Moreover, an AlPO4 coating layer with good thermal stability also improves thermal stability of the ternary positive electrode material. Therefore, the modified ternary positive electrode material provided by the present disclosure can simultaneously improve particle surface stability and conductivity, which is beneficial to simultaneously improving ternary material rate performance and cycle stability.
Absstract of: US20260331511A1
Electrodes for energy storage devices are disclosed that comprise a solventless electrode film. The solventless film comprises a porous network of an active material attached together by binder particles. The binder particles comprise a high density polyethylene polymer.
Absstract of: US20260328854A1
According to an embodiment, an information processing apparatus includes one or more hardware processors. The one or more hardware processors are configured to: calculate frequencies at each of which corresponding one of a plurality of first batteries has a specific attribute, based on a plurality of pieces of operation data obtained during operation of a second battery that is a battery including the plurality of first batteries each functioning as a battery, the plurality of pieces of operation data including the specific attribute and identification information for identifying a first battery having the specific attribute, the specific attribute satisfying a predetermined condition in an attribute of the plurality of first batteries; and identify a first battery in a specific state among the plurality of first batteries, based on the frequencies.
Absstract of: US20260326620A1
0000 An electric vehicle is described that has fuel cells and rechargeable batteries. The fuel cells are sized to produce an electric power output within their peak fuel efficiency range approximately equal to an anticipated average electric power requirement of the electric vehicle over a projected work cycle. The rechargeable batteries are sized to provide electric power up to the anticipated maximum power draw over the anticipated work cycle. An electrical vehicle controller operates the fuel cells within their highest fuel efficiency range during normal operations and maintains the battery state of charge in an optimal longevity range using a portion of the output of the fuel cells. The batteries are employed to handle short-term power requirements that exceed the output of the fuel cells.
Absstract of: US20260331639A1
0000 A battery cooling device includes: a battery case with an accommodation portion accommodating a battery module; an inlet port that is provided at a central portion in a first direction in the battery case and on one end side in a second direction and into which cooling liquid supplied from a pump is introduced; discharge ports discharging, on an upper side of each of a plurality of the cells, the cooling liquid introduced into the inlet port; and a communication path causing the inlet port to communicate with the discharge ports. The communication path includes a branching flow path including first and second branching flow paths. The first branching flow path communicates with the inlet port and branches to one end side of the first direction. The second branching flow path communicates with the inlet port and branches to another end side of the first direction.
Absstract of: US20260331594A1
0000 A rectangular secondary battery includes a wound electrode body and an insulating protective film wound around the electrode body to cover the electrode body, wherein the insulating protective film has at least side circumferential surface parts that extend in a circumferential direction of side circumferential surfaces of the electrode body and a bottom surface part that covers a bottom surface of the electrode body, on the side circumferential surface of the wound electrode body, an end surface overlapping part in which end surface parts on both sides of the insulating protective film overlap each other is formed. The end surface overlapping part has penetration regions and reaching the side circumferential surface of the electrode body, and the periphery of the penetration regions of the end surface overlapping part and the side circumferential surface of the electrode body are bonded and fixed through the penetration regions with an electrically insulating tape.
Absstract of: US20260331490A1
A secondary battery includes a positive electrode plate, where the positive electrode plate includes a positive electrode active material, the positive electrode active material includes secondary particles, and the secondary particle is an agglomerated particle including a plurality of primary particles; and the primary particles include a positive electrode active substance; the secondary particles include oriented secondary particles; and in the oriented secondary particle, based on a total quantity of primary particles in the oriented secondary particle, a quantity proportion of primary particles whose a-axes form angles α1 with the longitudinal directions in the oriented secondary particle is denoted as F1, where 15°≤α1≤45°, and F1≥60%.
Absstract of: US20260331463A1
0000 Provided is an electrode for secondary battery. The electrode may include a substrate, a first coated portion disposed on a first surface of the substrate, the first coated portion comprising an active material; and a first uncoated portion disposed on the first surface of the substrate, the first uncoated portion being in contact with the first coated portion and exposing the substrate, wherein a first side portion of the first coated portion in contact with the first uncoated portion has a stepped surface.
Absstract of: US20260331573A1
A solid electrolyte is composed primarily of a component expressed by a composition formula of Naa+dMbXcAeOf by using values a to f that are greater than 0, where M is an element serving as a trivalent cation, X is a halogen element, and A is a sulfur element or a phosphorus element, in which 0.8c≤(a+3b)≤1.2c and 1.6f≤(d+n×e)≤2.4f are satisfied, where n is 4 or 6 when A is a sulfur element and n is 5 when A is a phosphorus element.
Absstract of: US20260331737A1
0000 The disclosure provides a lid-disassembling device and a battery electrolyte injection apparatus. The lid-disassembling device comprises a rack and a conveying mechanism. The conveying mechanism comprises a baseplate, a lifting assembly, and a gripping assembly and a plurality of blocking assemblies. The gripping assembly may first be driven by the lifting assembly to move downward, and the upper lid is then clamped by the gripping assembly. While the gripping assembly clamps the upper lid, the plugs of the plurality of blocking assemblies may respectively enter the plurality of injection cups and block the liquid-draining holes of the injection cups. Then, the gripping assembly is moved upward under the drive of the lifting assembly to remove the upper lid from the pallet and thus separate the injection cup from the battery.
Absstract of: US20260331580A1
An electrolyte solution for a lithium-sulfur battery and a lithium secondary battery comprising the same are provided. The electrolyte solution includes a nonaqueous solvent, a lithium salt, a nitrate salt, and an aryl derivative, wherein the nonaqueous solvent includes a linear ether compound and a conjugated heterocyclic compound, and the aryl derivative includes a thiolate compound, a thiol compound, a disulfide compound, or a mixture of two or more thereof, wherein each of R1 to R4 is independently a 5- or 6-membered heteroaryl containing at least one N or S atom as a ring atom, and the electrolyte solution is capable of effectively suppressing capacity fading over repeated charge and discharge cycles of the lithium secondary battery.
Absstract of: US20260331521A1
This application provides a current collector, an application of the current collector, a secondary battery, a battery module, a battery pack, and an electrical device. An undercoat is formed on a surface of the current collector. The undercoat includes a carbon nanomaterial. The carbon nanomaterial includes at least two selected from a zero-dimensional carbon material, a one-dimensional carbon material, or a two-dimensional carbon material. The undercoat is conducive to reducing a nucleation overpotential in metal ion deposition, and can effectively induce uniform deposition of metal ions, regulate the metal ion deposition, effectively suppress dendrite growth of the metal ions, and improve cycle performance and safety of the battery.
Absstract of: US20260331680A1
A battery pack capable of lashing a battery group without using a side rail that connects a pair of end plates together is obtained. A battery pack 1 of the present invention has a battery main body 20 having a battery group 30 in which a plurality of single batteries 31 have been laminated and a pair of end plates 40 that are respectively disposed at both ends of the battery group 30 in a lamination direction, an installation portion in which the battery main body 20 is installed, and brackets 50 that fix the battery main body 20 to the installation portion, and the brackets 50 hold the battery main body 20 in a state of being pressurized in the lamination direction.
Absstract of: US20260331668A1
A pack case includes a lower housing forming an accommodation space, a lower reinforcement plate mounted in the accommodation space of the lower housing and configured to support at least one cell assembly, and an upper housing coupled to the lower housing to seal the accommodation space, wherein a mechanical strength of the lower housing is smaller than a mechanical strength of the lower reinforcement plate.
Absstract of: US20260328856A1
A charger includes a control unit, a voltage measurement unit, and an OCV data extraction unit. The control unit controls charging of a secondary battery when the secondary battery is attached to the charger. The voltage measurement unit measures a terminal voltage of the secondary battery during charging. The OCV data extraction unit extracts OCV data that can be used to analyze the deterioration degree of the secondary battery. The charger has a first mode and a second mode as one cycle of charging of the secondary battery. In the first mode, the control unit charges the secondary battery with a predetermined current value. The voltage measurement unit measures a terminal voltage value (α) of the secondary battery. The control unit and the voltage measurement unit shift to the second mode after the end of the first mode. In the second mode, the control unit suspends charging for a predetermined suspension time. The voltage measurement unit measures the OCV value (β) of the secondary battery immediately after the elapse of the suspension time. The control unit and the voltage measurement unit return to the first mode after the end of the second mode. The control unit compares a terminal voltage value (αA) acquired in the first mode with a terminal voltage value (αB) acquired in the first mode one cycle before the first mode. The control unit controls the first time such that a difference value between the terminal voltage value (αA) and the terminal voltage value (αB)
Absstract of: US20260331598A1
0000 An electrolyte composition and a lithium metal battery comprising the same are provided. The electrolyte composition comprises an ether-based solvent and a fluoroborate-based lithium salt or a non-fluoroborate-based lithium salt dissolved in the ether-based solvent, where the fluoroborate-based lithium salt or the non-fluoroborate-based lithium salt and the ether-based solvent form a complex, and the electrolyte composition has low corrosivity to a lithium metal anode and also enables formation of a uniform coating film on the lithium metal anode.
Absstract of: US20260326616A1
0000 A method for operating a battery cell for a motor vehicle includes capturing an actual temperature of the battery cell and an actual current which relates to a power demand on the battery cell, performing a temperature prediction to calculate a cell core temperature on the basis of a thermal model of the battery cell using the actual temperature and the actual current, calculating a continuous current using the temperature prediction, predicting a degradation of a power limit using the temperature prediction and the continuous current, and outputting a control command for the operation of the battery cell using the power limit.
Absstract of: US20260331479A1
The invention relates to a sodium layered oxide of formula I: NaxM1a+1−y−z−nM2b+yM3c+zM4d+nO2, (I), wherein: M1a+, M2b+, M3c+ and M4d+ are different transition metal ions or mixtures thereof, x is a number ranging from 0.5 to less than 1; y, z and n are numbers ranging from 0.01 to 0.85; y+z+n is less than 1; a, b, c and d are the respective oxidation number of the transition metal ions M1, M2, M3 and M4, respectively; and the cumulative oxidation state of transition metal ions a*(1−y−z−n)+(b*y)+(c*z)+(d*n) is equal to 4−x; and wherein said sodium layered oxide of formula I is not P2-Na2/3Ni1/4Mn1/2Ti1/6Zn1/12O2, P2-Na2/3Ni1/4Mn1/2Ti1/2Mg1/12O2, or P2-Na2/3Ni1/4Mn1/2Ti1/6Zn1/12O2.
Absstract of: US20260331962A1
0000 The invention is an energy storage device charged wirelessly, especially by collecting electromagnetic waves in the radio frequency. The device is characterized in that the casing is made of a dielectric material with a dielectric constant in the range from 2 to 5 and a wall thickness from 0.5 mm to 15 mm. At least one layer of strip antennas made of conductive material is applied to the outer surface of the casing, with successive layers of antennas separated by a layer of dielectric material. Inside the casing casing guides are made, into which a PCB with a system converting RF energy into DC is inserted. Terminals connecting at least one energy storage module to the terminals of the system converting RF energy into DC and contacts are embedded on the PCB, to which at least one antenna is connected.
Absstract of: US20260331935A1
0000 The present disclosure provides a charging case for an earphone, comprising a lower housing assembly, an upper housing assembly, a main control circuit board, a magnetic suction structure, and an upper housing magnet. A Hall sensor is provided within the lower housing assembly, and the Hall sensor is electrically connected to the main control circuit board. The magnetic suction structure is configured to place an earphone in a magnetic suction manner, and when the upper housing assembly is in an open state with respect to the lower housing assembly, the Hall sensor is in a first state under an action of a magnetic field of the magnetic suction structure, and when the upper housing assembly is in a closed state with respect to the lower housing assembly, the upper housing magnet causes the Hall sensor to switch to a second state different from the first state.
Absstract of: US20260331496A1
0000 A pressurized compacted density of a powder of the negative electrode active material is a g/cm<3>, a pressure-released compacted density of the powder the negative electrode material is b g/cm<3>, and a pressure-release rebound rate is c, where c=(a−b)/a×100%, and 1.5%≤c≤20%; and a and c satisfy: c=k×(a−1), where 0.08≤k≤0.20. By regulating the value of k within the above range and ensuring a and c satisfy the above relationship, the negative electrode active material can maintain high porosity under a high compacted density, facilitating the infiltration of an electrolyte into the negative electrode sheet, enhancing the diffusion rate of active ions, and improving the kinetic performance of the secondary battery.
Absstract of: US20260331502A1
A particle size Dv50 of the negative electrode active material is a μm, a specific surface area is b m2/g, and 20≤2.5×a+b≤40. The battery includes a positive electrode plate, a negative electrode plate, and an electrolyte, where the negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, the negative electrode active material layer including the above negative electrode active material. The negative electrode active material, the battery, and the electric device can improve the low-temperature discharge capability of the battery and increase the low-temperature discharge capacity retention rate thereof.
Absstract of: US20260331657A1
There is disclosed herein a cylindrical secondary cell and a method of manufacturing thereof. The cell comprises a cylindrical casing (102) extending along an axis (A) from a first end (102a) to a second end (102b), the first end (102a) being an open end of the casing (102), an electrode roll (104) housed within the casing (102), and a lid (106) closing the open end (102a) of the casing (102). Advantageously, the edge of the open end (102a) is bent inwards to provide a flange (102d) comprising an angled surface (102e) sloping towards the second end (102b) of the casing (102), and the lid (106) is configured to be attached to the flange (102d).
Absstract of: US20260331658A1
Disclosed is a battery cell, which includes an electrode assembly including a cell body and an electrode tab provided to at least one side of the cell body, a cell case configured to accommodate the electrode assembly therein, an electrode lead coupled to the electrode tab and extending from the cell case, and a tab protection module accommodated in the cell case and configured to cover at least a portion of the electrode tab, the tab protection module including a lead positioning guide and a corresponding positioning guide insert portion adapted to receive the positioning guide insert portion, wherein the positioning guide insert portion is configured to couple to the electrode lead to guide a position of the electrode lead relative to the cell case.
Absstract of: US20260331454A1
0000 Disclosed are an all-solid-state battery having a protective layer including a composite including a metal sulfide and a carbon component, and a method for manufacturing the same. The all-solid-state battery includes an anode current collector, the protective layer disposed on the anode current collector, a solid electrolyte layer disposed on the protective layer, a cathode active material layer disposed on the solid electrolyte layer, and a cathode current collector disposed on the cathode active material layer, and the protective layer includes a matrix comprising the composite including the metal sulfide and the carbon component, and a metal component distributed in the matrix and capable of alloying with lithium.
Absstract of: US20260328241A1
Connector (1), in particular a screw or bolt, comprising an actuation area (10), in particular a head, an elasticity area (30) and a mounting area (50), wherein the connector (1) extends in a longitudinal direction (L), wherein a radial direction (R) is in particular perpendicular to the longitudinal direction (L), wherein the elasticity area (30) lies in the longitudinal direction (L) between the actuation area (10) and the mounting area (50), wherein the mounting area (50) has a thread, in particular an internal thread, wherein the elasticity area (30) has stiffness reduction structures (34), in particular in the form of recesses and/or openings, and/or wherein the elasticity area (30) has a lower elasticity than the mounting area (50) and/or than the actuation area (10) due to its geometry, and/or wherein the elasticity area has a degressive spring characteristic.
Absstract of: US20260331455A1
0000 A method of making an electrode by providing a mixture of first particles of silver or silver oxide and second particles of an inorganic porogen, molding the mixture, cohering the mixture to form a green body, demolding the green body, heating the green body to form a monolith, to convert any silver oxide to silver, and to fuse the first particles together, and submerging the monolith in a liquid that removes the second particles.
Absstract of: US20260331641A1
Provided are a battery, a power consumption device, and a method and a device for producing a battery. The battery includes: a plurality of battery cells arranged along a first direction; and a thermal management component extending along the first direction and being connected to a first wall of each battery cell of the plurality of battery cells, the first wall being a wall with the largest surface area of the battery cell; the thermal management component includes a flow channel for accommodating a fluid to adjust a temperature of the battery cell; a second direction is perpendicular to the first wall; where, a size of the flow channel in the second direction is W, and a capacity Q of the battery cell and the size W of the flow channel satisfy: 1.0 Ah/mm≤Q/W≤400 Ah/mm.
Absstract of: US20260331515A1
A cathode lithium-supplementing additive, a preparation method thereof, a lithium-rich cathode, and a secondary battery are provided. The cathode lithium-supplementing additive includes: a lithium-rich iron-based material and a passivation material in situ bonded to an outer surface of the lithium-rich iron-based material; a chemical formula of the passivation material is aLi2O·bFexOy, 1≤x≤3, 1≤y≤4, 0.0001≤a≤0.01, 0.0001≤b≤0.01. The lithium-rich iron-based cathode lithium-supplementing additive of the present application has a good lithium-supplementing effect on the cathode material, and can timely supplement the loss of lithium ions in the material during the charge and discharge cycle. In addition, the passivation material can effectively prevent the interface from reacting with water and carbon dioxide in the environment to form excessive residual alkali, improve the moisture resistance and processing performance of the lithium-supplementing material, improve the cycle performance of the cathode material, and improve the cycle performance of the battery and service life.
Absstract of: US20260327462A1
A back adhesive structure, comprising a release film and a back adhesive layer. The release film is provided with a first side and a second side opposite to each other. The first side is connected to a tearing part. The back adhesive layer and the release film are stacked. The back adhesive layer includes at least one partition block. The partition block is provided with at least one first flow channel. A length of the first flow channel extends along a length extension direction of the first side of the release film. The first flow channel is provided with a first flow channel wall and a second flow channel wall that extend along a length direction of the first flow channel and are opposite to each other. A length of the first flow channel wall is not less than a first set value.
Absstract of: US20260331700A1
Provided are a battery pack thermal runaway flue gas treatment system and a battery pack, which mainly solve the problem of the high cost of an existing battery thermal runaway flue gas treatment method. The battery pack thermal runaway flue gas treatment system comprises a thermal runaway flue gas treatment assembly, wherein the thermal runaway flue gas treatment assembly comprises a pressure relief pipe and an exhaust pipe; one end of the pressure relief pipe communicates with an explosion vent of a battery, and the other end of the pressure relief pipe is connected with the exhaust pipe; one end of the exhaust pipe that is disposed within a box body is connected with the pressure relief pipe. Each component of the system has a simple structure, and the cost of the system is very low.
Absstract of: US20260326530A1
0000 An electrified vehicle includes a chassis, a body, and a cab. The chassis is configured to support a tractive element and includes a front axle, a rear axle, and a battery box. The battery box includes a first portion disposed between the front axle and the rear axle. The battery box includes a second portion disposed above the rear axle. The battery box also includes a suspension hard point configured to enable relative movement between at least a portion of the body and the tractive element. The battery box is configured to receive module and to transfer energy from the module to a plurality of components of the electrified vehicle.
Absstract of: US20260331488A1
0000 A lithium nickel composite oxide cathode material, wherein under observation of a cross section thereof through scanning electron microscopy, the cross section of the lithium nickel composite oxide cathode material is divided into four parts by dividing a radius of the cross section into four equal-length parts, a porosity of each part as measured is in a range from 3% to 8%, and a total porosity of the cross section is in a range from 3% to 8%. A preparation method thereof includes mixing a hydroxide of nickel, cobalt, and manganese with a sulfate containing M and multi-period, low-temperature pre-sintering to obtain a pre-sintered precursor; mixing a lithium source with the pre-sintered precursor and high-temperature sintering to obtain a first sintered matrix; washing the first sintered matrix with deionized water, drying, then mixing with a coating agent and sintering to obtain the lithium nickel composite oxide cathode material.
Absstract of: US20260328495A1
A heat exchange assembly comprising: (I) two or more panels; (II) a plurality of channels formed between the two or more panels; and (III) one or more reservoirs located adjacent to the plurality of channels and configured to at least temporarily store a temperature control material, wherein the plurality of channels are configured to direct a flow path of the temperature control material between the two or more panels and provide structural rigidity to the assembly.
Absstract of: US20260331613A1
0000 A battery pack includes a plurality of battery cells; a cell holder surrounding an accommodation space in which the plurality of battery cells are accommodated, the cell holder including a hollow protrusion located at a temperature detection position for temperature measurement of the plurality of battery cells; a cover on the cell holder and including an exposure hole to expose the hollow protrusion; and a thermistor accommodated in the hollow protrusion through the exposure hole. The battery pack may provide a module with various outputs and capacities, by using battery packs having the same structure as one unit and connecting a plurality of battery packs to each other, and may provide scalability to adaptively correspond to various outputs and capacities using the battery packs having the same structure, by increasing or reducing the number of battery packs to be included in the module.
Absstract of: US20260331483A1
A lithium nickel oxide cathode material, a preparation method therefore and use thereof is provided. The cathode material has a chemical formula of Li1+xNi1−xO2, wherein 0.025≤x≤0.08; a crystal structure is an α-NaFeO2 type hexagonal layered structure with a space group of R-3m. Li that is surplus to the stoichiometric ratio of Ni occupies octahedral voids in a Ni layer and is randomly distributed in the octahedral voids. The preparation method includes the following steps: (1) reacting a nickel source and a lithium source with oxygen in the presence of a molten salt additive to obtain a product comprising lithium nickel oxide; and (2) purifying the product comprising lithium nickel oxide to obtain a powder comprising lithium nickel oxide, and placing the powder in an oxygen environment to obtain the lithium nickel oxide cathode material. The cathode material has high energy density, excellent cycle stability and excellent thermal stability.
Absstract of: US20260331714A1
According to the present disclosure, the thermal deterioration of metal junction parts formed on a contact interface of constitution members of electrode terminals is suppressed. The electrode terminal of the secondary battery disclosed herein includes a first member having a plate-shaped connection part and a plate-shaped second member connected to the connection part of the first member in a surface-contact manner. Then, the technique disclosed herein includes a metal junction part and a heat-insulating part formed on a contact interface between a connection part of the first member and the second member, and the heat-insulating part is formed outward of the metal junction part in a radial direction centered on the metal junction part. Due to this constitution, the heat-insulating part can block great heat even when such a great heat is applied to a region outside the heat-insulating part, and therefore, the heat deterioration of the metal junction part can be suppressed.
Absstract of: US20260331626A1
0000 A battery module and a battery pack including the same are provided. The battery module comprises a battery cell stack in which a plurality of battery cells including electrode leads are stacked; a first sensing block and a second sensing block configured to respectively cover a front side and a rear side of the battery cell stack from which the electrode leads protrude; and an elastic member configured to cover the first sensing block, the second sensing block, and two opposite lateral sides of the battery cell stack.
Absstract of: AU2026242264A1
Various embodiments may include a battery electrode, comprising: an iron electrode body comprising iron active material and a zinc sulfide additive, wherein the zinc sulfide additive comprises crystalline cubic zinc sulfide. Various embodiments may include a battery electrode, comprising: an iron electrode body comprising iron active material and a manganese sulfide additive, wherein the manganese sulfide additive comprises crystalline cubic manganese sulfide. Various embodiments may include an iron electrode battery, comprising: an iron electrode; and a sulfide reservoir separate from the iron electrode, the sulfide reservoir comprising crystalline cubic zinc sulfide. Various embodiments may include an iron electrode battery, comprising: an iron electrode and a sulfide reservoir separate from the iron electrode, the sulfide reservoir comprising crystalline cubic manganese sulfide. ct c t
Absstract of: US20260331552A1
0000 Embodiments provide an apparatus for inspecting stacking of electrodes of a secondary battery. The apparatus includes a separator supply device, a stacking main body having a stacking table formed on one surface and configured to allow the separator to be stacked on the stacking table, a stacking jig configured to stack an electrode plate on the separator stacked on the stacking main body, a fixing jig, a lighting device configured to emit light from one surface of the stacking table to allow the light to pass sequentially through the separator and the electrode plate, and a capturing unit configured to capture an image of the light that has passed through the separator and the electrode plate. Accordingly, reliability and efficiency may be secured in an electrode stacking process of a secondary battery.
Absstract of: US20260331652A1
0000 A pouch film for a secondary battery and a method for manufacturing the same. In some embodiments, the pouch film includes a stretchable auxiliary layer that is a multi-layered structure comprising a plurality of layers, wherein layers in the plurality of layers have different elongation rates. The stress at the interface of each layer is relieved and the moldability of a pouch is improved. The risk of breakage of a pouch is significantly reduced and defect rates are reduced in a pouch manufacturing process, thereby reducing manufacturing costs.
Absstract of: US20260325856A1
An electronic apparatus comprising: an electric field generator providing a first electrical signal having a first alternating current waveform at a frequency between 50 kHz and 1 MHz; and a controller communicating with the electric field generator, the controller having an input, a processor, and a memory storing an accelerated power-up program, a standard power-up program, and computer-executable instructions that cause the processor to: receive a generator power-down event by the input; detect the generator power-down event; deactuate the electric field generator; store an operating parameter; determine an operating status based at least in part on the operating parameter; and actuate the electric field generator to provide a second electrical signal using the accelerated power-up program responsive to the operating status being the accelerated status; the second electrical signal having a second alternating current waveform at a frequency between 50 kHz and 1 MHz.
Absstract of: US20260331684A1
0000 A ferritic stainless steel material for battery components has a composition comprising, on a mass basis, C: 0.001 to 0.050%, Si: 0.01 to 2.00%, Mn: 0.01 to 2.00%, P: 0.010 to 0.050%, S: 0.0001 to 0.0100%, Cr: 10.0 to 30.0%, and N: 0.001 to 0.050%, and further comprising one or more selected from Ti: 0.01 to 0.50% and Nb: 0.01 to 0.60%, the balance being Fe and impurities. The ferritic stainless steel material for battery components contains 0.010% by volume or more of Ti-based deposits and/or Nb-based deposits.
Absstract of: US20260331602A1
0000 A wireless microsystem for performing real-time monitoring on in-situ pressure and temperature inside a lithium battery comprises an acoustic wave receiving module, a working condition sensing module, and an acoustic wave transmitting module manufactured based on Micro-Electro-Mechanical System (MEMS) technology and connected sequentially; which can be non-destructively implanted into various lithium batteries; the acoustic wave receiving module is configured to, based on a first acoustic wave signal received from an external acoustic wave transmitter and corresponding to a first preset resonant frequency, perform acoustic-electric signal conversion to obtain a first electrical signal; the working condition sensing module couples an in-situ working state inside the cell to the first electrical signal to obtain a second electrical signal; the acoustic wave transmitting module is configured to perform electric-acoustic signal conversion on an electrical signal component satisfying a preset resonant frequency in the second electrical signal to transmit a second acoustic wave signal.
Absstract of: US20260327091A1
The present invention relates to a method for manufacturing a secondary battery and a secondary battery. A method for manufacturing a positive electrode active material with high charge and discharge capacity is provided. A method for manufacturing a positive electrode active material with high charging and discharging voltages is provided. A method for manufacturing a positive electrode active material with little deterioration is provided. The positive electrode active material is manufactured through a step of forming a composite oxide that contains lithium, nickel, manganese, cobalt, and oxygen; and a step of mixing the composite oxide and a calcium compound, and then heating the mixture at a temperature higher than or equal to 500 ° C and lower than or equal to 1100 ° C for 2 hours to 20 hours. By the heating, calcium is distributed at a preferred concentration in a surface portion of the positive electrode active material.
Absstract of: US20260328851A1
0000 A battery management system includes a sensing unit to generate a sensing signal indicating a battery voltage and a battery current of a battery, a memory unit to store a charge map recording a correlation between first to n
Absstract of: US20260331628A1
A battery module includes at least one cell group, and a heat dissipating member coupled to one side of the at least one cell group to externally dissipate heat generated in the at least one cell group, wherein the at least one cell group includes at least one battery cell stack, a flame retardant cover coupled to the battery cell stack to encase both side surfaces and an upper portion of the battery cell stack, and a flame retardant member disposed between an upper surface of the battery cell stack and the flame retardant cover and formed of a porous material.
Absstract of: US20260328848A1
0000 A battery diagnosis device can include a processor and a memory configured to store a program for battery diagnosis. The program causes the processor to perform a battery diagnosis method including determining a plurality of principal component vectors, a plurality of singular values and a plurality of coefficient vectors by analyzing an observation matrix having a plurality of observation voltage vectors indicating a voltage history of cell voltage of a plurality of battery cells, and for each of the plurality of coefficient vectors, detecting any faulty battery cell among the plurality of battery cells based on a principal component vector corresponding to the corresponding coefficient vector among the plurality of principal component vectors, a singular value corresponding to the corresponding coefficient vector among the plurality of singular values and an invalid coefficient included in the corresponding coefficient vector
Absstract of: US20260327468A1
0000 Reaction-induced crystallizable two-part polyurethane adhesive compositions formed from amorphous constituents. The two-part adhesive compositions can include a polyol resin comprising at least two functional groups, a mono-functional resin containing one functional group, and an isocyanate resin comprising at least two functional groups. Methods of forming adhesive compositions are provided. Applications of such adhesive compositions are provided.
Absstract of: US20260326692A1
A high voltage modular and expandable unit for electrical power distribution for application in the automotive technical sector.The electrical power distribution unit can use two or more basic electrical modules for any application. The basic electrical module is designed as a high voltage input port connected to an electric/output interface (HV I/O). The basic electrical module may also include current sensors, power relays, fuse and other electrical components that assist the distribution of electrical power.
Absstract of: US20260331553A1
The cell winding apparatus comprises an unwinding mechanism, a winding needle assembly, and an electrode sheet cutting-off device. The unwinding mechanism is configured to be capable of unwinding a first electrode sheet, a second electrode sheet, and a separator. The winding needle assembly is configured to be capable of overlapping the first electrode sheet, the second electrode sheet and the separator which are unwound by the unwinding mechanism and winding same into a wound structure. The electrode sheet cutting-off device comprises a cutter and an adjusting mechanism; the adjusting mechanism and the cutter edge side of the cutter are provided with a path for the first electrode sheet to pass through; the adjusting mechanism is configured to enable a demarcated region to be cut off of the first electrode sheet to be opposite to the cutter edge of the cutter.
Absstract of: US20260331599A1
0000 The present invention addresses the problem of providing an all-solid-state lithium-ion secondary battery that has excellent charging/discharging characteristics. 0000 The present invention includes at least a negative electrode layer, a separator layer, and a positive electrode layer. The negative electrode layer contains a negative electrode active substance which includes graphite. The separator layer is made of an oxide solid electrolyte. A resistance reduction layer is formed between the negative electrode layer and the separator layer, and the resistance reduction layer is made of a lithium alloy. Alternatively, the present invention includes a substance with which a lithium alloy is formed as a result of a secondary battery operation in which current flows between the negative electrode layer and the positive electrode layer.
Absstract of: US20260331498A1
0000 A negative electrode for secondary battery includes a negative electrode current collector; a first active material layer in which a first negative electrode slurry containing a first negative electrode active material is coated onto the negative electrode current collector; and a second active material layer in which a second negative electrode slurry containing a second negative electrode active material is coated onto the first active material layer, wherein the first negative electrode active material contains natural graphite having an mesopore volume of 0.6*10<−3 >cm<3>/g or more and 2.5*10<−3 >cm<3>/g or less, and the second negative electrode active material contains artificial graphite.
Absstract of: US20260331610A1
A system and method for use with a VTOL aircraft with batteries in a state of deep discharge which prepares the aircraft for a safe vertical landing despite the deep discharge initial condition. The method may include preparing the batteries for an intense burst of power as may be needed during the vertical landing. The method may include idling the battery, thermally conditioning the battery, and may further include charging the batteries by regenerative use of the rotors. The preparation of the batteries may then allow for a burst of power used for landing the aircraft.
Absstract of: US20260331617A1
A green chemistry hydrometallurgical process for recovering one or more metals from a metal-containing material includes leaching the metal-containing material with formic acid, obtaining a leachate comprising the one or more metals as one or more metal formates, and precipitating at least one of the one or more metal formates. The metal-containing material may be a lithium-ion battery cathode material, resulting in Li formate remaining in solution and precipitation of salts including one or more of Ni, Co, and Mn formates. Steps may include filtration of the leachate, sulphurization of retained metal formate salts to produce metal sulphate salts, purification of filtered leachate by adding lithium carbonate and filtering, dewatering of the purified leachate, and thermal decomposition of resulting lithium salts to produce battery grade lithium carbonate. Carbon dioxide, water, and formic acid may be recovered and reused, without liquid or solid waste produced.
Absstract of: US20260331514A1
The present invention is directed towards a system for coating a substrate comprising an electrodepositable coating composition and a powder coating composition. Also disclosed are coated substrates comprising a first coating layer comprising an electrodepositable coating layer, and a second coating layer comprising a powder coating layer on at least a portion of the first coating layer, as well as methods of coating substrates.
Absstract of: US20260331462A1
0000 Described herein are, among other things, structured cathodes for use in electrochemical cells (e.g., batteries). In some embodiments, a structured cathode includes at least one electrochemically active material included in a patterned film. The film may be disposed on a substrate (e.g., current collector) or may be free standing. The film has at least one patterned surface, for example has recesses extending into the film. A patterned film may be porous. A patterned film may be made of an assembly of particles including an electrochemically active material. Recesses may include holes or trenches or a combination thereof. Recesses may be formed by removing material from an initial film, such as with laser ablation. Recesses may extend only partially into or entirely through a film. Recesses may be interconnected or separate. Recesses may be disposed regularly or irregularly across a patterned surface. Recesses may be at least partially filled with electrolyte.
Absstract of: US20260326535A1
An acoustic treatment device for a cooling system of a vehicle is disclosed herein. The acoustic treatment device is configured to be fitted to a cooling system of a vehicle and includes at least one wall which delimits a duct for the circulation of an air flow. The acoustic treatment device includes at least one array of resonators formed by one or more rows of resonators arranged around the duct perpendicular to an axis of elongation of the duct. Each resonator of a row of resonators includes at least one cavity arranged in the wall and a neck connecting the cavity to the duct. For a given dimension of the cavity or of the neck, at least one resonator of the row of resonators has a value that is different from the value of the corresponding dimension of the other resonators of the row.
Absstract of: US20260327074A1
The present invention relates to a method for producing a salt of bis(chlorosulfonyl)imide (HCSI salt), which is economically feasible at industrial scale and which provides a high-purity product. The present invention also provides a method for producing a lithium salt of bis(fluorosulfonyl)imide (LiFSI), wherein said HCSI salt is used as an intermediate compound.
Absstract of: US20260331615A1
0000 Provided is a method capable of suppressing generation of dust during handling of a mixed powder of positive electrode active material and negative electrode active material, which is the raw material to be processed in the method for recovering valuable metals, and reducing recovery loss of valuable metals due to carry over that occurs when processing the mixed powder. The present invention is a method for recovering valuable metals, wherein the method includes a preparation step that prepares a raw material containing waste lithium-ion batteries, and a granulated material is prepared from a mixed powder in the preparation step by implementing a preliminary kneading step that adds water to a mixed powder containing the positive electrode active materials and the negative electrode active materials that constitute the waste lithium-ion batteries and preliminarily kneads the mixture and a granulation step that further kneads and granulates the preliminarily kneaded material.
Absstract of: US20260331456A1
A method of producing an electrode capable of suppressing occurrence of electrode peeling and improving a production yield during vacuum-drying which is a producing step of an electrode. A method of producing an electrode includes a step (S1) of kneading an electrode active material, a conductive auxiliary agent, and a binder to obtain a slurry, a step (S2) of applying the slurry onto a substrate, and a step (S3) of vacuum-drying the applied slurry, in which the kneading is performed by a heating and stirring treatment at 150 °C or higher and 200 °C or lower and a defoaming and stirring treatment.
Absstract of: US20260331557A1
0000 A cell array, including a plurality of cells arranged in sequence is provided. Each of the plurality of cells includes a housing and an electrode core. The electrode core includes an electrode plate. The electrode plate includes a current collector and a coating layer arranged on the current collector. The cell array satisfies the following formula 1: (1−JRw)+(SRw−1)=10%−15%. JRw is an expansion space for the electrode core inside each of the plurality of cells in a first direction, SRw is an expansion space outside the plurality of cells in the first direction, and a thickness direction of each of the plurality of cells is defined as the first direction. JRw=Pw/(Cellw−Kw−Cw). SRw=(Mw−MNw)/(Celln×Cellw).
Absstract of: US20260331503A1
Disclosed herein is an apparatus comprising an electrode active layer comprising a network of high aspect ratio carbon elements defining void spaces within the network; a plurality of electrode active material particles disposed in the void spaces within the network and enmeshed in the network; and a surface treatment on the surface of the high aspect ratio carbon elements which promotes adhesion between the high aspect ratio carbon elements and the active material particles.
Absstract of: US20260327080A1
0000 Disclosed is a method for preparing a porous reduced graphene oxide including the steps of: (a) preparing a dispersion including a mixture of template particles and graphene oxide; (b) spray-drying the dispersion to prepare a template particle-graphene oxide composite; (c) heat treating the template particle-graphene oxide composite to prepare the porous reduced graphene oxide, wherein the porous reduced graphene oxide includes meso pores and macro pores having a size of 2 nm to 500 nm.
Absstract of: US20260326065A1
0000 A fluidized bed reactor includes a reactor body, and a dispersion plate coupled to a bottom portion of the reactor body. The dispersion plate may include a base plate and injection columns protruding from a top surface of the base plate. The injection columns include first injection columns arranged at a central portion of the dispersion plate, and second injection columns arranged at a peripheral portion of the dispersion plate. The second injection column has a greater height than a height of the first injection column. A reactive gas is uniformly injected to a wall surface of the reactor through the dispersion plate, thereby increasing a recovery ratio for an active metal of a lithium secondary battery.
Absstract of: US20260331712A1
0000 The present disclosure relates to a battery module comprising: a plurality of battery cells each including an electrode tab; and a bus bar connected to the electrode tab to electrically connect the plurality of battery cells to each other. The bus bar includes a plate having a plurality of holes. The electrode tab of each of the battery cells is inserted into at least a part of the plurality of holes of the plate. The electrode tab inserted into the hole and the plate are coupled to each other by a welding bead, and the welding bead has a width and a height defined by Equations 1 and 2, respectively.
Absstract of: US20260331679A1
0000 A cell assembly in which a plurality of battery cells are automatically aligned, a battery module comprising the cell assembly, and a battery pack comprising the battery module are provided. The cell assembly comprises the battery cells having magnets printed on surfaces thereof such that the battery cells are automatically aligned, the cells are prevented from being non-uniformly attached during the alignment, and physical positions of the battery cells are correctly located, thereby improving stacking workability.
Absstract of: US20260326613A1
0000 A battery state information providing apparatus may include a generator configured to generate experimental profiles and a driving profile based on experimental life indexes and driving life indexes, a comparator configured to compare the experimental profiles and the driving profile to determine an evaluation profile among the experimental profiles, and an evaluator configured to determine state information on a target battery pack based on the evaluation profile and a target life index. In addition, the target life index may be a driving life index of a vehicle including the target battery pack.
Absstract of: US20260331474A1
Provided is an anode material, a preparation method thereof and a lithium-ion battery. The anode material includes an active material including Si, O and metal M, where the metal M includes Mg, Ca and Cu. In the anode material, a mass content of Mg is mMg, a mass content of Ca is mCa, and a mass content of Cu is mCu, where 0
Absstract of: US20260331618A1
The invention relates to a container which comprises a system for diffusing cooled air to each battery module, the diffusion system comprising a device for generating cooled air. The cooled air diffusion system comprises at least two horizontal tubes for transporting the cooled air to the battery modules delimiting therebetween an intermediate space, each horizontal tube having a plurality of cooled air diffusion openings intended to open facing successive battery modules placed along the horizontal tubes. The cooled air diffusion system comprises at least one vertical plenum connected to the cooled air generating device and to the horizontal tubes for distributing the cooled air in the horizontal tubes.
Absstract of: US20260331686A1
Provided are top plate assemblies with a cell supervisory circuit for wireless communication with a master level battery control, and a battery module equipped therewith. The top plate assembly comprises: a metal plate; a circuit board accommodating hole located in the metal plate; a circuit board located in the circuit board accommodating hole; a wireless communication antenna mounted on the circuit board; and a housing of non-metal material housing and fixing the circuit board to the metal plate. The circuit board accommodating hole includes an anti-noise groove in the metal plate, the anti-noise groove maintaining a predetermined separation distance between the wireless communication antenna and the metal plate. The housing comprises: a resinous lower housing supporting the circuit board from a bottom surface of the metal plate; and a resinous upper housing covering the circuit board and the circuit board accommodating hole from an upper surface of the metal plate.
Absstract of: US20260331643A1
0000 A method for controlling the temperature of a battery in an electric or hybrid motor vehicle by means of a system including a vapor compression circuit in which a first heat transfer composition flows, and a secondary circuit in which a second heat transfer composition flows, the method involving: —heat exchange between the battery and the second heat transfer composition; —heat exchange between the second heat transfer composition and the first heat transfer composition; wherein the battery includes at least one electrochemical cell having a negative electrode, a positive electrode and an electrolyte including a lithium salt composition, the lithium salt composition including: —at least 99.75% by weight of a lithium salt of bis(fluorosulfonyl)imide; —chlorides Cl—at a mass content strictly less than 20 ppm. Also a system for carrying out the method.
Absstract of: US20260331879A1
A wearable pouch operable to hold at least one portable battery pack and other power or communications equipment. The wearable pouch includes a main body with a front side, a back side opposite the front side, at least one sealable opening, and at least one opening for at least one lead from the at least one portable battery pack secured within the wearable pouch.
Absstract of: US20260331604A1
0000 A battery pack for generating a synchronization signal herein includes one or more battery modules including a plurality of battery cells capable of supplying power to a motor of a vehicle and a battery management system electrically connected to another battery management system of another battery pack, in which the battery management system is configured to transmit a designated first synchronization signal to the other battery pack before performing a designated task, and receive a designated second synchronization signal from the other battery pack, determine a reference synchronization signal based on the first synchronization signal and the second synchronization signal, and perform the designated task based on the reference synchronization signal.
Absstract of: US20260331603A1
A battery module includes a plurality of battery cells, a master battery management system (BMS), and a bus bar connecting the plurality of battery cells. The first battery cell includes a first cell controller disposed in the first battery cell and configured to communicate with the master BMS through the bus bar, and first cell memory operatively coupled with the first cell controller. The first cell controller is configured to generate first history information related to the history of the first battery cell, record the generated first history information in the first cell memory, and transmit a first signal including the generated first history information to the master BMS through the bus bar. The master BMS is configured to record the first history information included in the first signal in master memory based on the reception of the first signal from the first cell controller.
Absstract of: US20260331592A1
An electrode assembly has a structure, in which a negative electrode, a separator, and a positive electrode are wound in a stacked state, and a middle center hole, the electrode assembly including: a negative electrode wound in a state a negative electrode tab is bonded to a predetermined position; and a positive electrode having an inner end closer to the center hole and an outer end farther from the center hole as an opposite end of the inner end, wherein the negative electrode, the separator, and the positive electrode are wound so that an inner end of the negative electrode is disposed closer to the center hole than the inner end of the positive electrode, and when a virtual line is drawn from the inner end of the positive electrode to a center point of the center hole, the virtual line passes through the negative electrode tab.
Absstract of: US20260331486A1
A cathode for a lithium secondary battery according to exemplary embodiments may include a cathode current collector; and a cathode active material layer formed on the cathode current collector and including over-lithiated oxide particles. An electrochemically active surface area of the cathode may be 0.5 m2/g to 2.5 m2/g.
Absstract of: US20260331933A1
An energy storage apparatus includes a cell, a changeover circuit located on a current path of the cell, and a control device. The changeover circuit is a circuit that switches output impedance Z of the energy storage apparatus, and the control device switches output impedance of the energy storage apparatus by using the changeover circuit.
Absstract of: US20260331661A1
A lithium ion battery including an accommodation case accommodating a battery unit having a positive electrode, a negative electrode, and a separator, and an electrolytic solution containing a lithium salt. A Ni-plated steel sheet or a laminated steel sheet is used as a material of the case. The battery includes, on the case, a first sealing portion being a sealing portion between a main body part and a lid part, and a second sealing portion being a sealing portion between a liquid pouring port lid for sealing a liquid pouring port provided to the lid part and used for pouring the electrolytic solution into the accommodation case, and the lid part exists. A coating film part contains a Ca compound, an Al compound, and a La compound exists on a portion with a content of Fe of 80 mass % or more, of the first sealing portion or the second sealing portion.
Absstract of: US20260327741A1
Provided is a method for recovering nickel, cobalt, and manganese from compounds including metal oxides of nickel, cobalt, and manganese in such a manner that a recovered material contains a low concentration of manganese and high concentrations of nickel and cobalt.The method for recovering nickel, cobalt, and manganese includes a mixing step of mixing compounds including a metal oxide of nickel, a metal oxide of cobalt, and a metal oxide of manganese, with a reducing agent to form a mixture; and a heating step of heating the mixture to produce a first product and a second product having a higher manganese concentration than the first product. The reducing agent used in the mixing step is at least one reducing agent selected from carbon reducing agents containing carbon as a constituent element, silicon reducing agents containing silicon as a constituent element, and aluminum reducing agents containing aluminum as a constituent element. The reducing agent is used in an amount satisfying a predetermined range.
Absstract of: US20260327092A1
A method for recovering elements from a waste material is disclosed, such as a black mass from spent Li-ion batteries, comprising thermally treating a solid waste material comprising carbon, at least one alkali metal, and one or more of a transition metal and a transition metal oxide, dissolving the thermally treated solid waste material in a solvent to form a dissolved waste material solution, removing the at least one alkali metal from the dissolved waste material solution to form an initial leaching solution, leaching the at least one transition metal to form a pre-purified leaching solution, and removing impurities from the pre-purified leaching solution to form a purified leaching solution. Precipitating transition metal particles from the purified leaching solution and forming a mixed metal oxide particle from the recovered lithium and precipitated transition metal particles is also disclosed.
Absstract of: US20260331659A1
A disclosed battery includes: a battery can of a bottomed tubular shape having an opening at one end; an electrode group housed in the battery can, and having a first electrode and a second electrode; an electrode terminal penetrating the bottom of the battery can, and insulated from the battery can; and a sealing plate sealing the opening of the battery can. The electrode terminal is electrically connected to the first electrode. The battery can is electrically connected to the second electrode.
Absstract of: US20260331485A1
0000 Disclosed is a method of preparing an electrode for an alkali metal ion secondary cell, the method may include: mixing polyacrylonitrile, or a copolymer of acrylonitrile and at least one other monomer, or a blend of either of the foregoing with one or more other polymers, with a first organic solvent and an electrochemically active material, to form an electrode precursor composition; forming an electrode precursor from the electrode precursor composition; and forming an electrode by exposing the electrode precursor to an alkali metal salt.
Absstract of: US20260328855A1
A battery management apparatus includes a measuring unit configured to measure a temperature and a voltage of each battery cell of a plurality of battery cells and a controller configured to generate first information of each of the battery cells of the plurality of battery cells, based on whether the plurality of battery cells are being charged or discharged, a time-specific temperature of each of the battery cells of the plurality of battery cells, and a time-specific voltage of each of the battery cells of the plurality of battery cells and determine a deteriorated battery cell among the plurality of battery cells, based on the first information of each of the battery cells of the plurality of battery cells.
Absstract of: US20260331609A1
Embodiments of the present application provide a method and apparatus for controlling a battery, which may improve the reliability of supplying power to an electric device by the battery. The method for controlling a battery is applicable to a battery management system, and comprises: sending first state information, where the first state information is configured to indicate that a battery is in a first abnormal state; and receiving first control information, where the first control information is determined based on the first state information and configured to instruct the battery management system to control the battery to be in a closed state in a first time period.
Absstract of: US20260326617A1
0000 The present disclosure relates to a motor vehicle and a method for operating a motor vehicle, having a traction battery, having a charging device for charging the traction battery with alternating current, and an ambient heat exchanger of a cooling circuit of a cooling device through which different cooling circuits can be formed, wherein during charging of the traction battery by the charging device, a charging cooling circuit is formed as one of the cooling circuits through which charging cooling circuit heat is absorbed from a charging heating element connected in a heat-conducting manner to the charging device and is transferred to a traction heating element connected in a heat-conducting manner to the traction battery and there is no heat exchange with the ambient heat exchanger.
Absstract of: US20260331706A1
0000 An all-solid-state battery includes: an exterior body including a laminated body having a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer laminated in this order, positive and negative electrode current collectors sandwich the laminated body in a lamination direction, an insulation sheet between the positive and negative electrode current collectors in an in-plane direction with respect to the laminated body, a first adhesive sheet between the insulation sheet and the positive electrode current collector and to which at least a part of the insulation sheet and positive electrode current collector is bonded, and a second adhesive sheet between the insulation sheet and negative electrode current collector and to which at least a part of the insulation sheet and negative electrode current collector is bonded, in which the laminated body and exterior body are communicating with respect to each other.
Absstract of: US20260331484A1
0000 Provided is a positive electrode active material that contributes to improvement in charge/discharge cycle characteristics and high-temperature storage characteristics of a nonaqueous electrolyte secondary battery. This positive electrode active material included in a nonaqueous electrolyte secondary battery contains a lithium transition metal composite oxide having a layered structure, and an additive. The lithium transition metal composite oxide has a prescribed composition and contains secondary particles formed by the agglomeration of primary particles. On the surface of the primary particles, there exists a surface modification layer containing at least one element of Ca and Sr and at least one element selected from the group consisting of W, Mo, Ti, Si, Nb, and Zr. The additive contains at least one of a phosphate, an oxide, a hydroxide, and a fluoride containing at least one element selected from the group consisting of Ti, Al, W, Zr, Mg, Co, B, and Si.
Absstract of: US20260331667A1
A battery pack comprising a plurality of battery modules according to an embodiment of the present disclosure may include a case, partition walls configured to partition the inside of the case into a plurality of compartments, a plurality of battery modules disposed in the plurality of compartments, respectively, a cover configured to cover the plurality of compartments from an upper side of the partition walls, and a flame retardant sheet deformed between the partition walls and the cover as the cover moves.
Absstract of: US20260331582A1
0000 This application provides an electrolyte, a lithium-ion battery, and an electric device. The electrolyte includes a solvent, a lithium salt, and an additive. The solvent includes a fluoroether, a carbonate compound, and a carboxylic ester in a mass ratio of (10-20):(40-65):(20-45). The additive includes a first additive, and the first additive is a tetranitrile compound represented by formula I. Compared with the prior art, a solvent of the electrolyte in this application includes a fluoroether, which enables the formation of a solid electrolyte interphase (SEI) film with improved toughness at a lithium metal anode to improve the stability of an interface at a lithium metal anode. Additionally, a tetranitrile compound is added as an additive, which can effectively enhance the stability of a positive electrode. The tetranitrile compound can play a synergistic role with the fluoroether to effectively balance the transport rate of lithium ions.
Absstract of: US20260331713A1
0000 A battery assembly (10) comprising a chain of at least a primary battery module (20) and a secondary battery module (22) is described. The primary battery module comprises a primary casing (40′) within which a first plurality of groups of battery cells (32) are housed and electrically connected in series, each group comprising a plurality of battery cells (30) electrically connected in parallel. The primary battery module further comprises a cell monitoring unit (60) arranged to detect a voltage of each of the plurality of groups of battery cells of the primary battery module. The secondary battery module comprises a secondary casing (40″) within which a second plurality of groups of battery cells (32) are housed and electrically connected in series, each group comprising a plurality of battery cells (30) electrically connected in parallel. Also provided is an electrical interconnect between the primary battery module and the secondary battery module, arranged such that each of the first plurality of groups of battery cells is electrically connected in parallel with a corresponding one of the second plurality of groups of battery cells, so that the voltages detected by the cell monitoring unit are also voltages of each of the plurality of groups of battery cells of the secondary battery module.
Absstract of: US20260331510A1
The present invention relates to a binder composition for positive electrodes comprising a polymer P1 comprising recurring units derived from vinylidene fluoride and a hydrophilic polymer P2 comprising recurring units derived from at least one monomer of formula R1R2C═C(R3)C(O)R (I) wherein R1, R2 and R3 are independently selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of —NHC(CH3)2CH2C(O)CH3, —NR′R″ or —OR′ wherein R′ and R″ are independently selected from the group consisting of H and C1-C18 alkyl groups optionally substituted by one or more hydroxyl, thiol or amino functional group(s) or a five- to six-membered heterocycle comprising at least one nitrogen atom in the ring; characterized in that the weight average molecular weight of said hydrophilic polymer P2 is greater than 30000 g/mol, advantageously greater than 50000 g/mol, preferably greater than 65000 g/mol, more preferably greater than 80000 g/mol.
Absstract of: US20260331722A1
An electrode assembly, a secondary battery, and an electronic device. One end of a first current collector in a width direction is provided with a plurality of extension members, a first surface of each extension member is provided with a plurality of protruding portions in a protruding manner, and a second surface of the extension member is provided with a plurality of recessed portions in a recessed manner. The electrode assembly includes adjacent extension members. When viewed along a thickness direction of the electrode assembly, two adjacent extension members at least partially overlap, and at least one protruding portion of one extension member is embedded in a recessed portion of another extension member adjacent thereto.
Absstract of: US20260331523A1
0000 A positive electrode includes, between the winding start side end of a positive electrode mixture layer and the winding end side end of the positive electrode mixture layer in an o-direction, a first positive electrode core exposed portion positioned at one edge in a β-direction and to which a positive electrode lead is connected, and a second positive electrode core exposed portion positioned at the other edge in the β-direction and a part of which is opposite the first positive electrode core exposed portion in the β-direction with a part of the positive electrode mixture layer therebetween. The part of the positive electrode mixture layer is disposed between the first and second positive electrode core exposed portions in the β-direction. The width-direction length a between the first and second positive electrode core exposed portions is not less than 10% of the β-direction length b of the positive electrode.
Absstract of: US20260331584A1
0000 Provided are an electrolyte additive, an electrolyte, a battery, and an electric device. The electrolyte additive for a battery with a silicon-based negative electrode includes a first additive and a first lithium salt. The first additive includes tetravinylsilane and trisethenyl(dimethyl)silylphosphate. The first lithium salt includes lithium tetrafluoro(oxalato)phosphate.
Absstract of: US20260331482A1
Described herein are a coated particulate material for use in an electrode of an electrochemical cell and a process for preparing the coated particulate material, an electrode including the coated particulate material, an electrochemical cell including the coated particulate material, and a method of using the coated particulate material for preparing an electrode for use in an electrochemical cell.
Absstract of: US20260331478A1
0000 A positive electrode active material for a secondary battery includes a lithium metal composite oxide having a crystal structure assignable to a space group Fm-3m. The lithium metal composite oxide includes at least Li and Mn. The lithium metal composite oxide has a crystallite size of 1 nm to 100 nm or less.
Absstract of: US20260331499A1
A negative electrode for nonaqueous electrolyte secondary batteries according to the present invention comprises a negative electrode collector and a negative electrode mixture layer that is formed on the negative electrode collector; the negative electrode mixture layer comprises a first negative electrode mixture layer and a second negative electrode mixture layer, which are arranged on the negative electrode collector; the first negative electrode mixture layer contains an Si-based material and graphite particles A; the second negative electrode mixture layer contains an Si-based material and graphite particles B that have a lower internal void fraction than the graphite particles A; and the ratio (T1/T2) of the thickness (T1) of the first negative electrode mixture layer to the thickness (T2) of the second negative electrode mixture layer is not less than 1.05 but less than 1.20.
Absstract of: US20260331500A1
A negative electrode for a lithium secondary battery includes a negative electrode active layer and a negative electrode current collector. The negative electrode active layer includes a center region, an edge region, and a sliding region on the current collector, and has the advantage of exhibiting a high-rate charge and discharge and a high energy density with a small volume change during charge and discharge by having an alignment degree (O.I.) of each carbon-based negative electrode active material contained in the center region, the edge region, and the sliding region satisfying Formula 1 and Formula 2. A method of manufacturing the same is also provided.
Absstract of: US20260331647A1
A pouch-type battery case including a cup part having a recessed shape; and a gas pocket part disposed at one side of the cup part and having a recessed shape is provided. A wrinkle part folds or unfolds so that a depth of the gas pocket part varies depending on an internal pressure of the gas pocket part may be defined on a circumferential portion of the gas pocket part. The wrinkle part may include: a convex portion protruding to the outside of the gas pocket part; and a concave portion which is alternately disposed with the convex portion in a depth direction of the gas pocket part. A remaining thickness of the convex portion may be less than a remaining thickness of the concave portion.
Absstract of: US20260331942A1
0000 The present document describes techniques associated with temperature-based battery-charging-profile architectures and applications thereof. Although advances in battery chemistries may enable batteries to be charged at temperatures that are higher or lower than the limits of conventional-battery chemistries (e.g., 0 °C to 60 °C), conventional hardware is generally restricted (e.g., hardcoded) to those limits. However, the temperature-based battery-charging-profile architectures and applications thereof, as described herein, provide a low-cost solution for conventional battery-charging hardware to be able to charge batteries with battery chemistries having expanded charging limits. The techniques described herein enable charging of batteries at temperatures that are outside of the standard JEITA mask by utilizing a switching mechanism operated by a controller that switches, based on the battery temperature, to a different charge profile with a reduced charge rate at a reduced voltage and/or current without affecting the JEITA mask.
Absstract of: US20260331464A1
0000 A negative electrode for secondary batteries according to one embodiment of the present disclosure is characterized by comprising a negative electrode current collector and a negative electrode mixture layer that is arranged on the negative electrode current collector, and is also characterized in that: the negative electrode mixture layer contains a binder and a negative electrode active material that contains a carbon material and an Si-based material; the pore size distribution of the negative electrode mixture layer as determined by a mercury intrusion method has two peak values R1 and R2; the peak value RI is within the range of 0.5 μm to 1.5 μm; the peak value R2 is within the range of 2 μm to 10 μm; and the content of the binder contained in the negative electrode mixture layer is 4% by mass or more with respect to the total mass of the negative electrode active material.
Absstract of: US20260331655A1
A battery pack includes a plurality of cell units each including at least one battery cell and a cell cover surrounding and supporting the at least one battery cell and a pack case accommodating and supporting the plurality of cell units in an internal space, wherein the cell cover includes: a first cover portion covering one side of the at least one battery cell, a second cover portion covering the other side of the at least one battery cell, and a cap portion connecting the first cover portion to the second cover portion and covering an upper end portion of the at least one battery cell, wherein the cap portion is detachably coupled to the first cover portion and the second cover portion.
Absstract of: US20260331516A1
The present invention can provide a carbon material which exhibits high dispersibility; and a carbon material dispersion composition. The present invention can provide: a mixture slurry able to yield an electrode film having a high electrical conductivity; and, more specifically, a secondary battery having excellent rate characteristics and cycle characteristics; and a vehicle having said secondary battery. Provided is a carbon material that satisfies requirements (1) and (2). (1) The BET specific surface area is 400 m2/g to 650 m2/g. (2) In powder X-Ray diffraction analysis, at least two peaks are present within the diffraction angle range 2θ=24.0°-27.0°.
Absstract of: US20260331646A1
0000 An apparatus for manufacturing a secondary battery according to an embodiment of the present invention may include a transfer module configured to transfer a pouch, a heating module comprising at least one of an internal heating part provided in the transfer module to heat the pouch and an external heating part disposed outside the transfer module to heat the pouch, and a sealing module disposed behind the heating module in a transfer direction of the pouch to seal a terrace part of the pouch in a state in which the pouch is folded so that an electrode assembly is accommodated in a cup part of the pouch.
Absstract of: US20260331666A1
0000 The present invention relates to a battery module, in which a cell is swelled due to a swelling phenomenon by a gas inside the cell, which is generated as a use time increases, possibility of damaging a case of the cell is reduced to improve stability, thereby extending a lifespan, and a method for manufacturing the same. 0000 A battery module according to the present invention may include a cell stack having a shape in which a plurality of cells are stacked, a frame in which the cell stack is accommodated, an adhesive resin disposed between a bottom surface of the cell stack and the frame so that the cell stack adheres to the frame, and a film disposed between a portion of the bottom surface of the cell stack and the adhesive resin so that adhesion between the portion of the cell stack and the adhesive resin decreases.
Absstract of: EP4826831A1
0001 Problem To provide a mechanism that enables the proper use of battery packs. 0002 Solution A control device provided with a control unit that controls processing for granting a reward to an inhalation device user who has returned a battery pack that was provided from a charging device for charging the battery pack and that is detachably connected to the inhalation device, the inhalation device generating an aerosol using a substrate containing an aerosol source, wherein the control unit controls processing including: receiving first authentication information for authenticating the battery pack to be returned; authenticating the battery pack to be returned on the basis of the received first authentication information; transmitting information indicating the authentication result of the battery pack to be returned; receiving a reward grant request including information indicating the user of the inhalation device; and granting a reward to the user on the basis of the received reward grant request.
Absstract of: EP4826805A1
In an all-solid-state battery using an electrode containing a sulfide-based solid electrolyte, corrosion of a current collector is suppressed, and the resistance of the electrodes is prevented from increasing. An electrode for an all-solid-state battery according to the present invention includes: a mixture containing an active material and a sulfide-based solid electrolyte; and a current collector, wherein the current collector is made of an alloy containing Ni and Cr, a Ni content in the alloy is 60% by mass or more, and a Cr content in the alloy is 0.1% by mass or more and 40% by mass or less. An all-solid-state battery according to the present invention includes: a positive electrode; a negative electrode; and a solid electrolyte layer, wherein at least one of the positive electrode and the negative electrode is the electrode for an all-solid-state battery according to the present invention.
Absstract of: WO2025125306A1
The invention relates to a method (200, 600, 700) for cleaning a surface (204, 602, 702) with the aid of an atmospheric plasma jet (26, 208, 326, 426, 526, 612, 709, 709), the surface (204, 602, 702) being contaminated with at least one at least partly organic substance (202), wherein the method is characterized in that water (216, 336, 540) is introduced into the atmospheric plasma jet (26, 208, 326, 426, 526, 612, 709, 709), and in that the surface (204, 602, 702) is simultaneously subjected to the water (216, 336, 540) introduced into the atmospheric plasma jet (26, 208, 326, 426, 526, 612, 709, 709) and to the atmospheric plasma jet (26, 208, 326, 426, 526, 612, 709, 709). The invention also relates to a use of a device comprising a plasma source configured to generate an atmospheric plasma jet (26, 208, 326, 426, 526, 612, 709) and comprising a supply line element (10, 212, 330, 436, 528) configured to introduce water (216, 336, 540) into the atmospheric plasma jet (26, 208, 326, 426, 526, 612, 709), for cleaning a surface (204, 602, 702), in particular a surface (204, 602, 702) of a battery cell (604), the surface (204, 602, 702) being contaminated with at least one at least partly organic substance (202).
Absstract of: EP4570934A1
0001 The present invention relates to a composition comprising lithium carbonate obtained from black mass. The composition can be obtained by a process comprising (i) mixing black mass with a liquid to provide black mass slurry; (ii) converting lithium into a lithium salt in and removing graphite from the black mass slurry of step (i); (iii) separating dissolved lithium carbonate from solids in the black mass slurry of step (ii) to provide a lithium-enriched liquid fraction and a lithium-depleted solid fraction; optionally, reducing the lithium salt in the lithium-enriched liquid fraction of step (iii) to provide elementary lithium; (v) optionally, purifying the lithium salt in the lithium-enriched liquid fraction of step (iii) or the elementary lithium of step (iv); and (vi) optionally, solidifying the lithium salt of step (iii) or (v) or the elementary lithium of step (iv) or (v).
Absstract of: EP4570952A1
The present invention is related to a method of producing a porous electrode comprising: preparing a slurry comprising a solvent, between 1 % and 25 % by weight of a polymeric binder material and between 10 % and 80 % by weight of particles comprising an electrochemically active material, based on the total weight of the slurry, the polymeric binder material being at least partially dissolved in the solvent; applying the slurry to a porous electrically conductive support; and subjecting the slurry of the coated support comprising the slurry to phase inversion, thereby forming the porous electrode, which comprises the porous electrically conductive support and a porous composite comprising a porous matrix, comprising the polymeric binder material, and the particles comprising the electrochemically active material, wherein the particles are dispersed in the porous matrix, wherein the weight ratio of the polymeric binder material to the particles in the slurry is between 2:98 and 50:50, and wherein a total amount of the polymeric binder material and the particles in the slurry is between 32 % and 80 % by weight, based on the total weight of the slurry. The invention further relates to a porous electrode comprising a porous electrically conductive support and a porous composite comprising a porous matrix, comprising a polymeric binder material, and particles comprising an electrochemically active material.
Absstract of: EP4826775A1
0001 The present invention relates to a lithium metal electrode and a method for preparing the same. The lithium metal electrode of the present invention may include a current collector, a metal layer positioned on at least one surface of the current collector and including a lithium alloy, and a protective layer positioned on the metal layer, wherein the protective layer may include amorphous carbon and a silicate clay mineral having a 2:1 layered crystal structure.
Absstract of: EP4826796A1
The present disclosure provides a lithium iron phosphate material, a preparation method therefor, a cathode sheet, and a secondary battery, and relates to the field of cathode materials. The lithium iron phosphate material in the present disclosure satisfies 1.10 ≤ σb/σf ≤ 5.00, wherein σb is a sample standard deviation of circularity C of large lithium iron phosphate particles, and σf is a sample standard deviation of circularity C of small lithium iron phosphate particles. By controlling a difference in the sample standard deviation of circularity between large and small lithium iron phosphate particles, the large and small lithium iron phosphate particles with different morphologies cooperate with each other, enabling the lithium iron phosphate material to achieve both good tap density and specific surface area. According to the method for preparing the lithium iron phosphate material in the present disclosure, polydopamine-partially-coated large-particle-sized iron phosphate seed crystal is subjected to vacuum dehydration to obtain a surface-dehydrated modified iron phosphate seed crystal, which is used for controlling the morphology of large iron phosphate particles in subsequent precipitation reaction. Subsequently, through a co-precipitation method and subsequent treatments, a lithium iron phosphate material with good tap density and specific surface area is ultimately prepared.
Absstract of: EP4826877A1
0001 Disclosed in the present application are a battery and an electric device. The battery is configured to be connected to brackets. The battery comprises a case. The case comprises a first case and a second case, wherein in a first direction, the first case and the second case are connected to each other, and the first case and the second case jointly define a chamber for accommodating a battery cell. The first case is provided with a first connecting face and second connecting faces, which face the first direction, the first connecting face being connected to the second case, and the second connecting faces being configured to be connected to the brackets. The positions of the first connecting face and the second connecting faces in the first direction do not overlap. The technical solution provided in the present application can improve the volumetric energy density of the battery.
Absstract of: GB2705573A
A method of synthesising a layer of two-dimensional material or a stack of layers of two-dimensional material comprises providing a liquid precursor composition on a flat surface of a liquid metal 332, the liquid metal being a metal or metal alloy having a melting point of less than or equal to 2500C at a pressure of 1 atmosphere, and performing a chemical reaction to form the at least one layer of two-dimensional material on the surface of the liquid metal from the liquid precursor composition. Preferably, a moveable barrier 352 is used to form and compress a thin layer of the liquid precursor composition. The reaction may comprise an electrochemical process that includes passing a current 370, 372 through the precursor composition. Electrodeposition from an aprotic solvent may be performed. The layer may comprise borophene, silicene, phosphorene, germanene, arsenene, antimonene, bismuthene, selenene, sulphurene, boron nitride, boron phosphide, silicon-germanium, a metal, graphane, graphene, graphene oxide or reduced graphene oxide. Figure 1
Absstract of: EP4826896A2
The present application provides a battery cell, a method and a device for manufacturing the same, a battery, and an electrical device. The battery cell includes: a casing; an end cap assembly including an end cap body and an electrode terminal located on the end cap body; and an electrode assembly arranged in the casing and including a first electrode sheet and a second electrode sheet with opposite polarities; the first electrode sheet includes a first main portion and a first electrode tab protruding from the first main portion, and the second electrode sheet includes a second main portion and a second electrode tab protruding from the second main portion; the first electrode sheet and the second electrode sheet are configured to be wound around a winding axis, such that the first main portion and the second main portion are laminated to form a winding body; an end of the winding body includes a first conductive region and a second conductive region, the first electrode tab is led out from the first conductive region, the second electrode tab is led out from the second conductive region, and adjacent first conductive region and second conductive region are arranged to be spaced along a radial direction of the winding body; and the first electrode tab is electrically connected to the electrode terminal, and the second electrode tab is electrically connected to the end cap body, the battery cell further comprises an adapter (104), wherein the first electrode tab (12) is elec
Absstract of: EP4825624A1
An electrode assembly according to an embodiment of the present disclosure is of a jelly-roll type having a structure in which a first electrode and a second electrode each having a sheet shape and a separation film interposed between the first electrode and the second electrode are wound in one direction. Each of the first electrode and the second electrode includes an uncoated portion not coated with an active material layer, the uncoated portion being formed on a longer edge end; and a coated portion coated with an active material layer, the coated portion being formed on a region excluding the uncoated portion. The first electrode includes at least one insulation layer that covers at least a portion of the uncoated portion and at least a portion of the coated portion at the same time.
Absstract of: EP4826885A2
A battery according to an embodiment of the present disclosure includes an electrode assembly including a first uncoated region and a second uncoated region; a battery housing accommodating the electrode assembly and electrically connected to the second uncoated region; a cap to cover an open portion on bottom of the battery housing; a first electrode terminal passing through a closed portion of the battery housing and electrically isolated from the battery housing; and a first current collector coupled to the first uncoated region and connected to the first electrode terminal.
Absstract of: EP4826804A2
0001 Disclosed (or Provided) are a negative electrode for a secondary battery, including: a current collector; a first negative electrode active material layer provided on the current collector; and a second negative electrode active material layer provided on the first negative electrode active material layer, in which at least one of the first and second negative electrode active material layers includes a lithium-substituted carboxymethyl cellulose, wherein the first negative electrode active material layer comprises a carbon-based active material, and wherein only the second negative electrode active material layer comprises a silicon-based active material.
Absstract of: EP4826358A1
The present application discloses a film coating device and a film coating method. A magnetic drive conveying device drives a battery cell to move; and during movement of the battery cell, a position of a magnetic levitation mover is determined on the basis of preset positions in a magnetic levitation guide rail, and the position of the magnetic levitation mover is used as the position of the battery cell to be transmitted to an encoder, such that the encoder outputs a pulse signal on the basis of the change in the position of the magnetic levitation mover to trigger an image collection device to perform image collection on the battery cell. Compared with a conventional mode of controlling a line scan camera to perform image collection on a battery cell on the basis of a grating ruler and a grating encoder, the solution provided by embodiments of the present application has less requirements on installation precision, is easier to implement, and is less affected by the environment, thereby making an imaging result more accurate.
Absstract of: EP4826789A1
0001 The present application relates to a sodium metal battery and an electrochemical apparatus, the battery comprising a positive electrode sheet and a negative electrode sheet, the negative electrode sheet being a negative electrode current collector, and a sodium layer deposited in situ on the negative electrode current collector having a thickness of ≥ 30 nm after the battery is charged and discharged for the first time. The present application utilizes the first irreversible capacity of the positive electrode material and the optimization of the battery cell design. After the battery cell is charged and discharged for the first time, the amount of residual sodium metal is sufficient to uniformly form a sodium deposition layer with a certain thickness on the surface of the negative electrode current collector. The higher nucleation energy required for the deposition of sodium onto the surface of the current collector during subsequent charge-discharge cycles is avoided, the overall deposition overpotential is reduced, and the deposition uniformity of sodium metal and the reversibility of the charge-discharge process are ensured.
Absstract of: EP4826765A2
Provided are a positive electrode slurry for preparing a positive electrode for a lithium secondary battery,the positive electrode slurry including a positive electrode active material, a conductive material, a binder, overcharge inhibitor, oxalic acid, and a solvent,wherein the overcharge inhibitor is included in an amount of 1 part by weight to 2 parts by weight, based on 100 parts by weight of the total solid content of the positive electrode active material, the conductive material, and the binder of the positive electrode slurry,the oxalic acid is included in an amount of 0.1 part by weight to 0.7 parts by weight, based on 100 parts by weight of the total solid content of the positive electrode active material, the conductive material, and the binder of the positive electrode slurry, andthe positive electrode slurry has a viscosity of 4000 cp to 15000 cp at room temperature; a preparation method thereof; a positive electrode for a secondary battery; and a secondary battery.
Absstract of: EP4826887A2
0001 Disclosed is a battery module capable of cooling a plurality of secondary batteries accommodated therein more efficiently. The battery module includes a cell assembly having a plurality of plate-shaped secondary batteries stacked in a first direction, and a plurality of heat dissipation plates interposed between the plurality of secondary batteries in an alternating manner, each heat dissipation plate has a coolant inlet portion and a coolant outlet portion and a coolant moving portion therebetween, the heat dissipation plates each comprise a base plate and side walls extending from the base plate, both side surfaces of each base plate formed at the heat dissipation plates are configured to face each of the side surfaces of two secondary batteries, wherein the conducted heat is emitted to the top or bottom of the heat dissipation plate.
Absstract of: EP4826888A1
0001 A battery cell (10) and a battery are provided. The battery cell (10) includes a battery cell body. The battery cell body includes a body portion (100) and multiple groups of tab structures (200). Each tab structure (200) includes multiple tabs (210) arranged on a same side of the body portion (100) in a first direction of the battery cell (10), and each of the tabs (210) is connected to the body portion (100). Some of the tabs (210) of the tab structure (200) form a first tab group (201), and some other of the tabs (210) form a second tab group (202). The first tab group (201) and the second tab group (202) are bent toward each other respectively at a first bending region (210a) and a second bending region (210b) and are connected in a stacking manner, and the first bending region (210a) and the second bending region (210b) are spaced apart in a second direction perpendicular to the first direction. Bending stress of each of the first tab group (201) and the second tab group (202) is smaller, so that the space occupied by the tab structure (200) is small, thereby helping to increase the energy density of the battery. The first tab group (201) and the second tab group (202) are more stable, effectively reducing the occurrence of abnormalities such as damage and fracture of the tabs (210) at a joint of the first tab group (201) and the second tab group (202).
Absstract of: EP4826881A2
A connector module according to an embodiment of the present invention includes a first connector including a first connector housing that is recessed therein to define a first recessed portion and a first conductive part coupled to the first connector housing, and a second connector including a second connector housing inserted into and coupled to the first recessed portion and a second conductive part inserted into and coupled to the second connector housing so as to be electrically connected to the first conductive part, wherein the first conductive part may be electrically connected only to a single surface of the second conductive part.
Absstract of: EP4826363A1
0001 A welding testing system and a defect detection method. The welding testing system comprises a welding mechanism and a first testing mechanism (1); the welding mechanism is used for welding a casing and a top cover of a battery cell (01) together; the first testing mechanism (1) is arranged downstream of the welding mechanism; the first testing mechanism (1) comprises a support assembly (11), a planar imaging assembly (12), and a processing assembly; the planar imaging assembly (12) is mounted to the support assembly (11); the planar imaging assembly (12) is used for capturing a planar image at a welding pass; and the processing assembly is used for acquiring the planar image and determining, on the basis of the planar image, whether the welding pass is standard-compliant. The planar imaging assembly (12) comprises imaging units (121); each imaging unit (121) comprises a camera (1211) and a reflective mirror (123); the camera (1211) and the testing position of the first testing mechanism (1) are located on the same side of the reflective mirror (123); a lens of the camera (1211) faces the reflective mirror (123); and when the battery cell (01) is located at the testing position, the camera (1211) captures an image of the welding pass reflected by the reflective mirror (123).
Absstract of: EP4826827A1
A secondary battery cell, a secondary battery, and an electric device are provided. The secondary battery cell includes a cylindrical housing, an electrode assembly, a first end cover assembly, and a second end cover assembly. The cylindrical housing has an accommodating chamber and a first opening and a second opening communicating with the accommodating chamber. The electrode assembly is arranged within the accommodating chamber. The first end cover assembly covers the first opening. The second end cover assembly covers the second opening. The first end cover assembly includes a first pressure relief mechanism. The second end cover assembly includes a second pressure relief mechanism. The secondary battery cell further includes an electrolyte. The electrolyte includes a solvent. The solvent includes dimethyl carbonate. A mass percentage content of the dimethyl carbonate in the solvent is greater than or equal to 50 wt%. The secondary battery cell satisfies that (S1+S2)/C0 is greater than or equal to 2.5 mm2/Ah. The secondary battery has a high energy density, good cycle performance, and high reliability.
Absstract of: EP4826777A1
The present invention relates to a lithium metal electrode and a method for manufacturing the same. The lithium metal electrode of the present invention includes a current collector, a metal layer positioned on at least one surface of the current collector and including a lithium alloy, and a protective layer disposed on the metal layer and including a carbon-based material, wherein at least one of a nitrogen-based alloy and a magnesium-based alloy is included in at least one region between the metal layer and the protective layer and inside the protective layer.
Absstract of: WO2025125210A1
The present invention relates to a positive electrode composite active material comprising a coated lithium electrode material and a sulfide solid electrolyte. It was found during the temperature and pressure treatment that a sulfur layer is formed between the coated positive electrode material and sulfide solid electrolyte which strongly enhances the ionic conductivity and the electrochemical performance.
Absstract of: EP4826878A1
0001 The present application relates to a battery apparatus and a power consuming device. The battery apparatus includes: a box body; at least two mounting members connected to the box body; and a first sealing assembly disposed on at least one of the mounting members and having a connection end and a protrusion end, where the connection end is connected to a connection surface of the corresponding mounting member, the protrusion end protrudes from the connection surface of the corresponding mounting member, and the protrusion end is sealed between the at least two mounting members. In the present application, the first sealing assembly is integrated onto the at least one mounting member, so that the first sealing assembly and the corresponding mounting member are formed into an integral structure, which can simplify a mounting and sealing structure. In addition, the protrusion end of the first sealing assembly can be better clamped between two structures that require sealing, for example, clamped between two mounting members, which can effectively improve the sealing effect between the two structures.
Absstract of: EP4826801A1
The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of improving high-temperature cycle characteristics of an electrochemical device and reducing or preventing gas generation, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, containing a tetrafluoroethylene-based polymer that is a copolymer of tetrafluoroethylene and a monomer containing a polar group, the tetrafluoroethylene-based polymer composition having fibrillatability.
Absstract of: WO2025124966A1
The present invention relates to the technical fields of electric batteries and adhesive formulations for fitting the latter in vehicles. It relates to a preparation for providing a thermally conductive adhesive formulation, to a process for producing the preparation, to a structure consisting of at least one battery cell, an adhesive layer and a heat sink, and to a method for producing the structure of the invention.
Absstract of: EP4825228A1
A power supply unit (110) of an inhalation device (100) comprises a power source unit (111), and a control unit (116) configured to control at least one of charging and discharging of the power supply unit (111). The power source unit (111) is replaceably and removably installed in the power supply unit (110). The control unit (116) is capable of performing identification processing for identifying the type of the power source unit (111) installed in the power supply unit (110, and control value modification processing for modifying, on the basis of the type of power source unit (111) identified in the identification processing, at least one control value used to control the power source unit (111).
Absstract of: EP4826787A1
Provided, according to exemplary embodiments of the present invention, is a negative electrode active material capable of improving the efficiency of a secondary battery. The negative electrode active material comprises: a carbon scaffold having a porous structure; and silicon-based particles distributed in pores of the carbon scaffold, wherein the carbon scaffold comprises a plurality of carbon structures which are agglomerated with each other. Provided, according to other exemplary embodiments of the present invention, are a method for manufacturing the above-described negative electrode active material, and a negative electrode comprising the negative electrode active material.
Absstract of: EP4826898A1
Exposure of a high-ductility conductor layer on an inner wall surface of a bottomed hole portion constituted by a low-ductility conductor layer is suppressed. Provided is a method for manufacturing a terminal component including a step of forming a first intermediate body 33 having a shaft portion 33C protruding from a central portion on a side of a low-ductility conductor layer 31B of a clad piece 31 formed by laminating and joining a high-ductility conductor layer 31A and the low-ductility conductor layer 31B in a thickness direction, a step of forming a second intermediate body 34 having an intermediate bottomed hole portion 34D from the first intermediate body 33 with a punch 75 having a first convex portion including a flat tip end portion, and a step of forming a third intermediate body 35 having a bottomed hole portion 35D from the second intermediate body 34 with a punch 85 having a second convex portion including a flat tip end portion, in which a radius of curvature R1 of an outer peripheral edge portion of the tip end portion of the first convex portion of the punch 75 is smaller than a radius of curvature R2 of an outer peripheral edge portion of the tip end portion of the second convex portion of the punch 85.
Absstract of: EP4826861A1
The present invention relates to the field of batteries, and specifically relates to a top cover assembly, a battery cell, a battery module, and an energy storage apparatus, which may prevent safety problems caused by thermal runaway. The top cover assembly comprises a top cover plate, an explosion venting port formed in the top cover plate, and an explosion venting branch tube. One end of the explosion venting branch tube is connected to the region of the top cover plate around the explosion venting port, and the other end thereof is used to connect to a first explosion venting converging tube. The battery cell comprises the top cover assembly, and the battery module and the energy storage apparatus each comprise the battery cell and the first explosion venting converging tube. When any constituent battery cell of the battery module experiences a thermal runaway, thermal runaway gas is discharged from the first explosion venting converging tube, to prevent the risk of thermal runaway gas posing a threat to the safety of people around the battery module and the energy storage apparatus.
Absstract of: EP4826824A1
Provided is preparation method for electrolyte separator of semi-solid-state secondary battery, semi-solid-state secondary battery, energy storage apparatus, and electrical device. Preparation method includes following steps: coating first solution on surface of base film, and performing first curing to form first intermediate layer on surface of base film, first solution including linear monomer, first thermal initiator, and first electrolyte solution; and coating second solution on surface of first intermediate layer, and performing second curing to form second intermediate layer on surface of base film, second solution including multi-branched monomer, second thermal initiator, and second electrolyte solution; and coating third solution on surface of second intermediate layer, and performing third curing to obtain electrolyte separator, third solution including nitrile-containing monomer, third thermal initiator, and third electrolyte solution. Electrolyte separator has excellent flame retardancy, ionic conductivity, mechanical performance, and thermal stability, so that semi-solid-state secondary battery can have excellent safety performance and electrochemical performance.
Absstract of: EP4826840A1
0001 A heat exchange device (13), a heat exchange system, a battery (10) and an electrical device, which belong to the technical field of batteries. The heat exchange device (13) is applied to the battery (10). The heat exchange device (13) comprises: a heat exchange body provided with a first heat exchange flow channel (1322) and a second heat exchange flow channel (1332); and an expansion valve (134), wherein an inlet end of the expansion valve (134) is connected to an outlet end of the first heat exchange flow channel (1322), and an outlet end of the expansion valve (134) is connected to an inlet end of the second heat exchange flow channel (1332). The second heat exchange flow channel (1332) comprises an upstream flow channel and a downstream flow channel which are connected in sequence, wherein the upstream flow channel is connected to the outlet end of the expansion valve (134), the upstream flow channel is configured to perform heat exchange with a battery cell (12), and the downstream flow channel is configured to perform heat exchange with the first heat exchange flow channel (1322).
Absstract of: EP4826800A1
0001 The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of improving cycle characteristics of an electrochemical device and reducing or preventing gas generation, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, containing a tetrafluoroethylene-based polymer containing 4 or less carboxy groups per 10<6> main chain carbon atoms.
Absstract of: WO2025124962A1
The present invention relates to the technical fields of electric batteries and adhesive formulations for fitting the latter in vehicles. It relates to a preparation for providing a thermally conductive adhesive formulation, to a process for producing the preparation, to a structure consisting of at least one battery cell, an adhesive layer and a heat sink, and to a method for producing the structure of the invention.
Absstract of: EP4826782A1
The present invention is a negative electrode active material containing negative electrode active material particles, in which the negative electrode active material particles contain a porous carbon structure, a low-valent nano silicon oxide in an amorphous state is dispersed within the porous carbon structure, a carbon composite having silicon as a core is dispersed in at least a surface layer portion within the porous carbon structure, the low-valent nano silicon oxide includes SiOx where "x" is less than 1.0, and the low-valent nano silicon oxide is dispersed in at least a deep portion within the porous carbon structure, in which the deep portion is deeper than the carbon composite having silicon as a core. This provides the negative electrode active material that can improve battery cycle characteristics thereof and increase a battery capacity thereof.
Absstract of: WO2025128396A1
Continuous production of agglomerated particles may be accomplished with the mixing of primary particles and an agglomeration binder or solution in a continuous kneader. The continuous kneader may mix the primary particles and the agglomeration solution as they are conveyed along the length of the continuous kneader from a first end to a second end to produce agglomerated secondary particles, wherein internal temperature along the length of the continuous kneader is maintained at a temperature below about 500°C. The shearing forces or shear gap within the continuous kneader may be adjusted to produce size-controlled agglomerated particles.
Absstract of: MX2026006799A
The present invention relates to the technical fields of electric batteries and adhesive formulations for fitting the latter in vehicles. It relates to a preparation for providing a thermally conductive adhesive formulation, to a process for producing the preparation, to a structure consisting of at least one battery cell, an adhesive layer and a heat sink, and to a method for producing the structure of the invention.
Absstract of: WO2025125298A1
The invention relates to a cell comprising: - An anode comprising a lithium metal layer, - An electrolyte comprising at least one lithium salt and at least one solvent, - A cathode comprising a porous composite layer which comprises at least one active material.
Absstract of: EP4826900A1
0001 A battery cell (10), a battery (100), and an electrical apparatus (1000). The battery cell (10) comprises: a housing (11), comprising a housing cover (112) and a housing body (111), wherein the housing (11) is provided with electrode columns (12); an electrode assembly (2), comprising a conductive portion (22) and an active substance coating portion (21), wherein the conductive portion (22) is electrically connected to the active substance coating portion (21) and the electrode columns (12); a support (3), arranged within the housing body (111) and located at the end of the active substance coating portion (21) away from the housing cover (112); and an insulating piece (4), comprising a main body insulating portion (41), a first insulating portion (42) and a second insulating portion (43), wherein the main body insulating portion (41) is arranged on the peripheral side of the active substance coating portion (21), the first insulating portion (42) is arranged between the support (3) and the end of the active substance coating portion (21) away from the housing cover (112), and the second insulating portion (43) is arranged at the end of the active substance coating portion (21) close to the housing cover (112). The risk of failure and damage of the electrode assembly (2) is reduced, the risk of corrosion of the housing (11) is reduced, and the reliability and stability of the battery cell (10) are improved.
Absstract of: EP4825519A1
Provided in the present application are a battery welding apparatus and a battery welding method. The battery welding apparatus includes a conveyor line, a cell feeding device, a connecting piece feeding device, and a welding device. The conveyor line includes a plurality of carriers arranged in a conveying direction of the conveyor line. The cell feeding device includes at least two cell feeding mechanisms; the at least two cell feeding mechanisms are respectively configured to feed at least two battery cell sets into at least two target carriers of the conveyor line, and each of the battery cell sets includes at least two cells. The connecting piece feeding device is configured to feed connecting pieces into the at least two target carriers. The welding device is arranged on a lateral side of the conveyor line. The conveyor line is movably arranged to sequentially convey the at least two target carriers to the welding device for welding. The welding device is configured to weld the connecting pieces and the at least two cells in the target carrier. The battery welding apparatus of the present application improves the welding efficiency.
Absstract of: EP4826897A1
Occurrence of burrs at an outer edge portion of a clad piece is suppressed. Provided is a method for manufacturing a terminal component including a step (1) of disposing a clad piece 31 formed by laminating and joining a high-ductility conductor layer 31A and a low-ductility conductor layer 31B in a thickness direction in a lower die 50 such that the high-ductility conductor layer 31A is in contact with a bottom surface 52 of a vertical hole portion 51 opening upward in the lower die 50, and a step (2) of plastically deforming, using a concave portion 56 for forming a convex portion that opens downward and extends upward in an upper die 55A, and is for forming the convex portion 32C corresponding to a shaft portion at a center of the clad piece 31, the clad piece 31 toward the concave portion 56 for forming a convex portion to form a convex portion 32C inside the concave portion 56 for forming a convex portion, while restraining the plastic deformation of a side surface of the clad piece 31 by an inner peripheral wall 53 of the vertical hole portion 51 of the lower die 50, when the upper die 55A is inserted into the vertical hole portion 51 of the lower die 50 to press an upper surface of the low-ductility conductor layer 31B of the clad piece 31.
Absstract of: EP4825209A1
0001 An inhalation device for generating an aerosol by heating an aerosol source, comprising: a heating unit (121) for heating the aerosol source; a power supply unit (110) having a battery (1111) as a power source unit, configured to supply power to the heating unit (121); and a case having a power supply accommodating portion for accommodating the power supply unit (110). The power supply unit (110) is configured with a plurality of components fixed together, including an MCU (1161) as a control element for controlling the supply of power from the battery (1111) to the heating unit (121), and the power supply unit is removably arranged in the power supply accommodating portion of the case in a fixed together state.
Absstract of: EP4825889A1
0001 The present disclosure provides a copolymer which exhibits excellent dispersibility and sufficient solubility in water. Specifically, the present disclosure provides a copolymer having a structural unit (A) derived from a monomer (a) having a hydrophilic group (excluding a catechol group) and a structural unit (B) derived from a monomer (b) having a catechol group, wherein the hydrophilic group is a hydroxyl group and/or a phosphate group, and the mass average molecular weight is 500 or more and 20,000 or less.
Absstract of: EP4826349A1
0001 The present application provides a battery airtightness testing system and method. The battery airtightness testing system comprises an initial test module and at least two re-test modules. The initial test module is configured to perform a first airtightness test on a plurality of incoming battery packs; each incoming battery pack comprises a plurality of batteries; and the battery packs tested by the initial test module include a first compliant battery pack and a first non-compliant battery pack. The re-test module comprises a buffer platform, a re-test chamber, and a re-test manipulator; the buffer platform is configured to receive and store the first non-compliant battery pack; the re-test manipulator is configured to grab all batteries in the first non-compliant battery pack buffered in the buffer platform into the re-test chamber; the re-test chamber is configured to perform an independent second airtightness test on each battery in the first non-compliant battery pack; and the batteries tested by the re-test chamber include a second compliant battery and a second non-compliant battery.
Absstract of: EP4825938A1
Provided is an adhesive composition containing a copolymer (A) having (a) a polymer block of an α-methylstyrene monomer and (b) a (co)polymerization block of one or more kinds of aliphatic monoolefins and/or one or more kinds of aliphatic conjugated diolefins or a partially or fully hydrogenated block of the (co)polymerization block, one or more kinds of copolymers (B) having (c) a polymer block of a styrene monomer and (d) a (co)polymerization block of one or more kinds of aliphatic monoolefins and/or one or more kinds of aliphatic conjugated diolefins or a partially or fully hydrogenated block of the (co)polymerization block, and an adhesion imparting agent (C). The present invention can provide an adhesive composition for forming an adhesive layer to be provided on the surface of an elastic rubber material, which is the main material of a sealing material, the adhesive composition capable of forming the adhesive layer with excellent adhesion both at high temperatures (80°C or higher, for example, 100°C) and at normal temperatures of about 25°C.
Absstract of: WO2025125752A1
The invention relates to a method for purifying a battery-electrode active material, comprising the following steps: a) providing an active material to be purified, wherein the active material to be purified comprises a metal oxide, aluminum impurities and copper impurities, b) dissolving the aluminum impurities by immersing the active material to be purified in a soda solution at a concentration selected at an effective value to achieve dissolution of the aluminum impurities, and c) dissolving the copper impurities by immersing the active material to be purified in an ammonia solution having an effective value to achieve dissolution of the copper impurities, whereby a purified active material is obtained. The invention also relates to a method for regenerating a spent battery-electrode active material that employs this purification method.
Absstract of: WO2025125331A1
The present invention relates to a process for the production of a LiHSO4 solution comprising the following steps: (a) providing a lithium solution comprising H+ cations, Li+ cations, SO4 2- anions, HSO4 - anions, and water, wherein the molar ratio between the hydrogen cations and lithium cations in the lithium solution ranges from about 0.3 to 2; wherein step (a) comprises the following steps: (a1) providing a leachate solution; and (a2) adding sulphuric acid (H2SO4), and optionally water, to obtain the lithium solution; (b) optionally, removing insoluble impurities and/or organic impurities from the lithium solution; and (c) proceeding with nanofiltration (NF) of the lithium solution to obtain a lithium hydrogen sulphate solution. The present invention further relates to processes for the production of lithium sulphate solutions and/or lithium carbonate from the lithium sulphate solution.
Absstract of: WO2025125208A1
The present invention relates to a positive electrode active material comprising Li, Ni, one or both of Mn and Co, and O, wherein the surface layer comprises S and a transition metal. It was found during the temperature and pressure treatment that a sulfur layer is formed between the positive electrode material and sulfide solid electrolyte which strongly enhances the ionic conductivity and the electrochemical performance.
Absstract of: EP4826795A1
0001 The present application relates to the technical field of lithium batteries, and in particular to a preparation method for a positive electrode material, a positive electrode material, a positive electrode sheet, a battery, and an electric device. The method of the present application comprises: mixing a nitrate salt and a precursor in a solvent, and roasting to obtain a positive electrode material, wherein the precursor comprises LiFe<(1-y)>M
Absstract of: EP4826904A1
An electrolyte injection method, a detection apparatus, an electrolyte injection system, and a manufacturing system for battery cells are provided. The electrolyte injection method can significantly improve the electrolyte injection efficiency. The electrolyte injection method includes: constructing an electrolyte injection curve based on the obtained electrolyte injection time and electrolyte injection volume of a battery sample; dividing the electrolyte injection curve into at least two segments so that the average slopes of two adjacent segments of electrolyte injection curves are different, and taking a connection point between the two adjacent segments of electrolyte injection curves as a target time inflection point; calculating electrolyte injection parameters according to the target time inflection point, the electrolyte injection parameters including the number of electrolyte injection operations and the electrolyte injection volume corresponding to each electrolyte injection operation; and providing an electrolyte to an initial battery according to the electrolyte injection parameters, and performing standing treatment between two adjacent electrolyte injection operations to obtain an electrolyte-injected battery. The electrolyte injection method of the present application can significantly improve the electrolyte injection efficiency.
Absstract of: WO2025125540A1
The present invention relates to particle for a positive electrode active material comprising lithium, nickel, cobalt, aluminium, oxygen and manganese having a ratio Coedge / Cocenter ≥ 1.1 and a ratio Aledge / Alcenter ≥ 20.0, wherein Coedge is an atomic ratio of Co to the total amount of Ni, Co, and Mn at an edge of the particle, Cocenter is an atomic ratio of Co to the total amount of Ni, Co, and Mn at a center of the particle, Aledge is an atomic ratio of Al to the total amount of Ni, Co, and Mn at an edge of the particle, Alcenter is an atomic ratio of Al to the total amount of Ni, Co, and Mn at a center of the particle, and wherein Coedge, Cocenter, Aledge, and Alcenter are measured by cross-sectional SEM-EDS..
Absstract of: WO2025125818A1
The invention provides a method of separating an electrode material from an electrode, the method comprising the steps of: a. Providing an electrode comprising an electrode material adhered to a 5 current collector; b. Adhering the electrode material to a frozen solid; c. Delaminating the current collector from the electrode material when the electrode material is adhered to the frozen solid to provide a free electrode material and a free current collector; and 10 d. Recovering the free electrode material.
Absstract of: WO2025125012A1
Process for making a coated cathode active material for lithium-ion batteries wherein said cath- ode active material comprises lithium, nickel and at least one of cobalt and manganese with at least 50 mol-% being nickel, referring to metals other than lithium, wherein said process com- prises the steps of: (a) providing an aqueous solution of chlorides of nickel and of at least one of cobalt and man- ganese in the targeted ratio, (b) performing a pyrolysis of the aqueous solution of step (a) in a flame fed by natural gas, methane, or hydrogen, thereby obtaining a precursor of a cathode active material, (c) adding a source of lithium and, optionally, at least one dopant selected from oxides and (oxy)hydroxides of Ti, Zr, Nb, Ta, Al, Y, Sr, Ba, W, Ce or Mo to the precursor from step (b), (d) performing a thermal treatment at a temperature in the range of from 700 to 1100°C, (e) performing a coating on the material resulting from step (d) with at least one oxide or (oxy)hydroxide of Mn, Co, Ti, Zr, Nb, Ta, Al, Y, Sr, Ba, B, W or Ce, followed by another thermal treatment at a temperature in the range of from 200°C to 800°C.
Absstract of: EP4825234A1
This inhalation device (100) comprises a power source unit (111), a control unit (116) controlling the power source unit, (111) and a case (20) having a power source accommodating portion (200) for accommodating the power source unit (111), the inhalation device heating an aerosol source to generate an aerosol. the power source accommodating portion (200) has an opening (opening 201) in which the power source unit (111) can be inserted and removed, The power source unit (111) is removably mounted in the power source accommodating portion (200). The inhalation device (100) further comprises a panel (30) for opening and closing the opening (201) of the power source accommodating portion (200), and an open/close detection sensor (20d) for detecting an open/close state of the opening (201) by the panel (30). The control unit (116) controls the power source unit (111) based on a detection result of the open/close detection sensor (20d).
Absstract of: EP4826875A1
A battery (10) and an electric device, which belong to the technical field of batteries. The battery (10) comprises: a case (11); a bottom protective plate (13), the bottom protective plate (13) and the case (11) defining an accommodating cavity; a plurality of battery cells (12), which are mounted in the accommodating cavity; and protective structures (14), wherein the protective structures (14) are mounted on an end beam (111) of the case and located between the end beam (111) and the bottom protective plate (13), and the minimum distance between each protective structure (14) and the bottom protective plate (13) is not greater than the minimum distance between each battery cell (12) and the bottom protective plate (13).
Absstract of: EP4826874A1
A battery and a power consuming apparatus are provided, and belong to the field of battery technologies. The battery (100) includes a box-body assembly (1) and a plug-in assembly (4). The box-body assembly (1) includes a first wall (111). A first penetration hole (1111) is provided on the first wall (111). The plug-in assembly (4) is mounted to the box-body assembly (1) and includes a plug-in member (41) and an adapter (42). The plug-in member (41) includes a mounting portion (411) and a power connection portion (412). The mounting portion (411) is located on an outer side of the first wall (111). The power connection portion (412) includes an external power connection end (4121) located on a side of the mounting portion (411) away from the first wall (111) and an internal power connection end (4122) located on a side of the mounting portion (411) close to an interior of the box-body assembly (1). The internal power connection end (4122) is disposed corresponding to the first penetration hole (111). At least a part of the adapter (42) is located outside the box-body assembly (1) and supports the mounting portion (411), to space the mounting portion (411) from the first wall (111).
Absstract of: EP4825230A1
0001 A power supply unit of an inhalation device that generates an aerosol from an aerosol source, comprising: a positive terminal (90a), a negative terminal (90b), and a temperature terminal (90c), which are examples of connections to which a power source unit (111) configured to store power and that is configured to be detachable from the power supply unit is connected; and a control unit (116) that performs a predetermined operation check when the power source unit (111) connected to these connections is replaced, and controls the operation of the power source unit based on the result of the operation check. In the operation check, the control unit (116) obtains information about the power source unit (111) after replacement and, based on this information, the control unit (116) detects faults with the power source unit (111) after replacement, and/or detects faults with the positive terminal (90a), the negative terminal (90b) or the temperature terminal (90c), which are examples of connection portions connected to the power source unit (111) after replacement.
Absstract of: EP4826880A1
0001 A method includes steps of: cutting a first lead connection tab of at least one of first lead plates; removing the first lead plate from a battery holder and extracting, from the battery holder, one or more secondary battery cells connected to the first lead plate among a plurality of secondary battery cells; inserting another secondary battery cell into a portion of the battery holder from which the one or more secondary battery cells have been extracted and connecting a second lead plate to an end face of the other secondary battery cell; and connecting a second lead connection tab, provided on a portion of the second lead plate and disposed off-center so as not to overlap with a position corresponding to the first lead connection tab of the first lead plate, to a blank region that is wider than the width of the first lead connection tab and that is free of the first lead connection tab.
Absstract of: WO2025128939A1
A battery cell comprising a composite water-responsive safety layer and/or composite water- and pH-responsive safety layer to protect against bodily tissue damage and/or electrolysis, when the battery cell is exposed to aqueous solution or bodily tissue, is provided.
Absstract of: EP4826061A1
0001 A Ni plated steel sheet for cans according to an embodiment of the present invention comprises a base steel sheet, a Ni plating layer located on one or both surfaces of the base steel sheet, and an Fe-Ni alloy layer located between the base steel sheet and the Ni plating layer, wherein the base steel sheet comprises, in wt%, C: 0.02 to 0.07%, Mn: 0.1 to 0.4%, Al: 0.01 to 0.06%, and Ti: 0.02 to 0.06%, and the balance of Fe and other unavoidable impurities, an ASTM grain size number is 11.3 or more, a tensile strength is 420 MPa or more, an elongation is 20% or more, an in-plane anisotropy Δr is 0.4 or less, and a thickness of the Fe-Ni alloy layer is 0.5 to 2.5 µm.
Absstract of: EP4826953A1
A power receiving device (100) configured to receive a first AC power in a non-contact manner includes a first resonant circuit (110), a power conversion circuit (120), a battery (130), a second resonant circuit (140) connected to an input part of the AC power in the power conversion circuit, a battery sensor (160), a power receiving sensor (180), and a control circuit (150), wherein the power conversion circuit can convert the first AC power (AC1) supplied from the first resonant circuit (110) into a first DC power and supply the first DC power to the battery, and can convert the second DC power supplied from the battery into a second AC power and supply the second AC power to the second resonant circuit, and the control circuit converts the second DC power and supplies the second DC power to the second resonant circuit when the temperature detected by the battery sensor is within a predetermined first range.
Absstract of: EP4826828A1
0001 Provided is a technique for suppressing a decrease in cell capacity while suppressing a short circuit between a positive electrode and a negative electrode. The present invention relates to a lithium secondary battery including a positive electrode and a negative electrode which face each other with a separator being interposed between the positive electrode and the negative electrode, in which the positive electrode includes a positive electrode current collector configured to sandwich a resin layer between a first metal layer and a second metal layer, and a positive-electrode active material layer provided on the positive electrode current collector, the first metal layer includes a first portion in which the positive-electrode active material layer is not provided, the second metal layer includes a second portion in which the positive-electrode active material layer is not provided, and the first portion and the second portion have different dimensions in both a width direction and a length direction.
Absstract of: EP4826852A1
0001 An assembled battery includes a holding member configured to hold a plurality of batteries, a stacked battery in which the plurality of batteries are stacked in a stacking direction via the holding member, and a ventilation path adjacent to the stacked battery, extending in the stacking direction, and forming a flow path of cooling wind for cooling the plurality of batteries. The ventilation path includes an air intake port for taking the cooling wind into the ventilation path. The holding member includes a ventilation hole opened to the ventilation path side and a side opposite to the ventilation path to cause the cooling wind to flow from the ventilation path to the stacked battery. The ventilation hole includes a bottom surface ventilation hole opened toward spaces formed between bottom surfaces of the plurality of batteries and a bottom surface of the holding member.
Absstract of: EP4826892A1
0001 In an all-solid-state battery including a sulfide-based solid-state-electrolyte and using a conductive porous sheet for connection between an electrode and a conductive path of an exterior body, internal resistance of the battery is reduced and increase of the internal resistance with time is prevented. The all-solid-state battery of the present invention is characterized in that it includes: an electrode stacked body having a positive electrode, a negative electrode, and a solid electrolyte layer; and an exterior body having the electrode stacked body sealed inside of the exterior body, wherein the exterior body has a conductive path extending from the inside to the outside, a porous metal substrate is interposed between the positive electrode and/or the negative electrode and a conductive path of the exterior body, at least one of the positive electrode, the negative electrode, and the solid electrolyte layer includes a sulfide-based solid electrolyte, the porous metal substrate is formed of an alloy containing Ni and Cr, a content of Ni in the alloy is 60 mass% or more, and a content of Cr in the alloy is 0.1 mass% or more and 40 mass% or less.
Absstract of: WO2025128179A1
Thermally conductive compositions may include: an isocyanate component containing a blocked isocyanate; an isocyanate-reactive component containing: one or more polyetheramines and one or more magnesium oxide particles; and one or more thermally conductive fillers present in one or more of the isocyanate component and the isocyanate-reactive component; wherein the thermally conductive composition has a thermal conductivity of greater than 1 W/m.K. Methods may include combining an isocyanate component and an isocyanate-reactive component; and emplacing the resulting thermally conductive composition between a heat source and a heat sink in an EV battery.
Absstract of: EP4825798A1
A manufacturing method of lithium phosphate includes: introducing a lithium-containing solution into a reactor; introducing an alkaline material and a phosphorus supplying material into the reactor; stirring the lithium-containing solution into which the alkaline material and the phosphorus supplying material are introduced to grow lithium phosphate nucleus particles and obtain a lithium phosphate slurry; and separating the slurry into solid and liquid to obtain the lithium phosphate, in which one of the alkaline material and the phosphorus supplying material is introduced into an upper portion of the reactor, and the other is introduced into a lower portion of the reactor.
Absstract of: EP4825207A1
An inhalation device (100), which is an example of an aerosol generation device, comprises: a power source unit (111) configured to be capable of supplying power to a heater unit (60) for heating an aerosol source; a main body side board unit (90) on which an MCU (1161) controlling the supply of power to the heater unit (60) is mounted; and a case (case 20) having a power source accommodating portion (200) and a board accommodating portion (210). the case (20) includes a connection portion (connection portion 20x) to which the power source unit (111) is connected, and a regulator (regulator 29) restricting intrusion of the power source unit (111) into the board accommodating portion (210). The regulator (29) is arranged at least between the power source accommodating portion (200) and a mounting section of the MCU (1161) when viewed from the power source accommodating portion (200). The power source unit (111) has a battery (1111) and a protective circuit that includes a protective IC (1114) and a switch circuit (1113), and is removably arranged in the power source accommodating portion (200).
Absstract of: EP4826060A1
0001 A Ni plated steel sheet for cans according to an embodiment of the present invention comprises a base steel sheet, a Ni plating layer located on one or both surfaces of the base steel sheet, and an Fe-Ni alloy layer located between the base steel sheet and the Ni plating layer, wherein the base steel sheet comprises, by weight %, C: 0.02 to 0.07%, Mn: 0.1 to 0.4%, Al: 0.01 to 0.06%, and Nb: 0.01 to 0.04%, with the balance being Fe and other inevitable impurities, wherein an ASTM grain size number is 11.3 or more, wherein a tensile strength is 420 MPa or more, wherein an elongation is 20% or more, wherein an in-plane anisotropy Δr is 0.4 or less, and wherein a thickness of the Fe-Ni alloy layer is 0.5 to 2.5 µm.
Absstract of: EP4825220A1
0001 A power source unit (111) that can store electrical power is replaceably mounted on a power supply unit (110) of an inhalation device (100), which heats an aerosol source to generate an aerosol. The power supply unit (110) comprises: terminal connections (20a, 20b) for electrically connecting to terminals of the power source unit (111); and a control unit (116) for controlling the power supply unit (110). After the power source unit (111) is connected to the terminal connections (20a, 20b), the control unit (116) activates the power supply unit (110) when a predetermined operation is input by the user.
Absstract of: EP4826818A1
A secondary battery and an electric apparatus are provided. The secondary battery includes a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector, and the negative electrode film layer has a first surface facing away from the negative electrode current collector and a second surface disposed opposite the first surface. Thickness of the negative electrode film layer is denoted as H, a region from the first surface of the negative electrode film layer to a thickness of 0.3H is denoted as a first region of the negative electrode film layer, and a region from the second surface of the negative electrode film layer to a thickness of 0.3H is denoted as a second region of the negative electrode film layer. The first region includes a first negative electrode active material, and the second region includes a second negative electrode active material. The first negative electrode active material includes a matrix and a carbon coating layer formed on at least part of a surface of the matrix, and a lithiation plateau voltage of the first negative electrode active material is 0.118 V to 0.140 V. Gram capacity of the second negative electrode active material is greater than that of the first negative electrode active material.
Absstract of: EP4826771A1
0001 The present disclosure provides a secondary battery and an electrical device. The secondary battery comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer formed on at least one surface of the negative electrode current collector. The negative electrode film layer comprises a first region and a second region. The first region is located between the second region and the negative electrode current collector. The first region comprises a first negative electrode active material. The second region comprises a second negative electrode active material. A powder OI value of the second negative electrode active material is less than a powder OI value of the first negative electrode active material. The first negative electrode active material comprises a first artificial graphite having an La(110) of 130-175 nm and an Lc(002) of 30-42 nm.
Absstract of: EP4826402A1
A battery capacity determination method, including: (S1) when the initial static voltage of a battery from which charging starts is less than or equal to a preset voltage threshold value, on the basis of an initial residual capacity corresponding to the initial static voltage and a first capacity charged into the battery from the initial static voltage to a high-voltage inflection point, updating the high-voltage inflection point capacity of the battery to obtain the current high-voltage inflection point capacity of the battery; and (S2), on the basis of the current high-voltage inflection point capacity, determining the current maximum capacity of the battery.
Absstract of: EP4826825A1
0001 A non-aqueous electrolyte and a lithium-ion battery. The non-aqueous electrolyte comprises a lithium salt, an organic solvent, and an Additive A and Additive B, wherein the structural formula of Additive A is as shown in (I), wherein R<1> is selected from alkylene, fluoroalkylene, alkenylene, or fluoroalkenylene, and R<2> is selected from fluoroalkyl or fluoroalkenyl; and the Additive B is a boron-containing lithium salt. By compounding the additive A and the boron-containing lithium salt additive, the cycle performance, high-temperature performance and rate capability of a lithium-ion battery are improved; and by means of further combination with other components in the non-aqueous electrolyte, the high-temperature performance and cycle performance of the lithium-ion battery at a conventional voltage are ensured, and moreover when the voltage is increased to 4.5 V or even higher, the lithium-ion battery still has better high-temperature performance and cycle performance, and also has better safety performance and electrochemical performance.
Absstract of: EP4826829A1
0001 Provided is an all-solid rechargeable battery including: an all-solid-state electrode assembly including a negative electrode, a positive electrode, and a solid electrolyte layer placed between the negative electrode and the positive electrode; a pouch which stores the all-solid-state electrode assembly in an inner space and includes a sealing part which seals the inner space; a negative electrode tab which protrudes from the negative electrode of the all-solid-state electrode assembly through the sealing part to the outside of the pouch; and a positive electrode tab which is separated from the negative electrode tab and protrudes from the positive electrode of the all-solid-state electrode assembly through the sealing part to the outside of the pouch.
Absstract of: EP4826950A1
0001 Problem To provide an arrangement enabling suitable management of battery packs. 0002 Solution A battery pack provision device for replaceably providing a battery pack to each of a plurality of inhalation devices having a heating unit for heating an aerosol source to generate an aerosol, a battery pack being detachably connected to each inhalation device, and the battery pack provision device comprising: a connecting portion electrically connected to the battery pack; and a control unit for determining a state of the battery pack based on information acquired, via the connecting portion, from the battery pack connected to the connecting portion, wherein, when it has been determined that the battery pack has deteriorated, the control unit controls processing to notify information indicating that the battery pack has deteriorated, in association with the battery pack.
Absstract of: EP4826780A1
0001 Disclosed are a cathode and an all-solid-state secondary battery including the same, the cathode including: a cathode current collector; and a cathode active material layer containing a lithium sulfide-based cathode active material and an inorganic filler and disposed on one side or both sides of the cathode current collector, wherein the inorganic filler is a lithium metal oxyhalide represented by Formula 1 below:
Absstract of: WO2025128431A1
A disordered rocksalt powder comprised of submicrometer primary particles without asperities arising from pulverization may be made by heating, at an average heating rate, disordered rocksalt precursors in a salt to a reaction temperature above the salt's melting point for a reaction time to form the disordered rocksalt powder in the salt, cooling, the disordered rocksalt powder and salt to below the salt's melting point at an average cooling rate, and separating the disordered rocksalt powder from the salt, the average heating and cooling rate being at least 5 ?/min when heating between the salt's melting point to the reaction temperature.
Absstract of: WO2025125514A1
The invention relates to a battery (10) made up of electric battery cells, comprising: - at least one external terminal (13), - an external tray (12), - a stack (11) of a plurality of electric battery cells (14) in said external tray (12), each comprising two electrical connection terminals (16), each terminal (16) being connected to at least one terminal (16) of another battery cell, characterized in that the electrical connection of all the terminals (16) situated on the same side of the battery cells is achieved via a rectilinear member (20), which is provided with conductive clamping members (22) that interact with the terminals (16) of the battery cells (14) and which is movable between a position in which it is disconnected from the tabs (16) and the external terminal (13), and a position in which it is electrically connected to all of the terminals (16) and the external terminal (13).
Absstract of: EP4825232A1
0001 A power supply unit for an inhalation device which generates an aerosol from an aerosol source comprises: a positive terminal (90a), a negative terminal (90b) and a temperature terminal (90c), which are examples of a connecting portion, to which is connected a power source unit (111) capable of storing power and configured to be removable from the power supply unit; and a control unit (116) which, when the power source unit (111) connected to said terminals has been replaced, implements a predetermined operating check and controls operation of the power supply unit based on a result of the operating check. In the operating check, the control unit (116) acquires information relating to the power source unit (111) after replacement, and determines whether or not the power source unit (111) after replacement is compatible with the power supply unit, based on this information.
Absstract of: EP4825229A1
A power supply unit (110) for an inhalation device (100) comprises a power source unit (111) and a control unit (116) configured to control at least one of charging and discharging of the power source unit (111). The power source unit (111) is replaceably and removably mounted in the power supply unit (110). The control unit (116) is capable of performing identification processing for identifying the type of power source unit (111) mounted in the power supply unit (110, and control value modification processing for modifying, on the basis of the type of power source unit (111) identified in the identification processing, at least one control value used to control the power source unit (111). At least one of the control values used for controlling the power source unit (111) is not modified by the control value modification processing.
Absstract of: WO2025125081A1
In a hand-held machine tool having a first battery pack and at least one second battery pack, and having a battery pack state display unit (150) which has a single battery pack charge state display (222), the battery pack state display unit (150) furthermore has a first display element (224) allocated to the first battery pack and at least one second display element (225) allocated to the at least one second battery pack, wherein the battery pack charge state display (222) is operatively connected to the first and to the at least one second display element (224, 225) in such a manner that at least three different availability states of the battery packs (192, 194) can be indicated thereby. (Figure 2)
Absstract of: EP4826873A1
Disclosed are an energy storage container (100) and an energy storage system (1000). The energy storage container (100) includes a container body (10). A battery compartment (20), an electrical compartment (30), and a liquid cooling unit (40) are disposed inside the container body (10); the electrical compartment (30) and the liquid cooling unit (40) are disposed on the same end side of the battery compartment (20) in a first direction (O). Such a configuration can effectively improve the space utilization rate of the energy storage container (100); additionally, working personnel can inspect the electrical compartment (30) and the liquid cooling unit (40) on the same end side of the energy storage container (100), thereby effectively improving the convenience of on-site maintenance.
Absstract of: EP4826832A1
0001 Problem To provide a mechanism capable of appropriately performing information collection utilizing the replacement of a battery pack. 0002 Solution A battery pack detachably connected to an inhalation device having a heating unit that heats an aerosol source to generate an aerosol, the battery pack comprising: a rechargeable battery; a memory unit that stores information; a communication terminal that transmits and receives information between the battery pack and a device to which the battery pack is connected; and a control unit that transmits information stored in the memory unit via the communication terminal and deletes information to be deleted in the information stored in the memory unit while leaving information not to be deleted when a predetermined condition relating to replacement of the battery pack is satisfied.
Absstract of: EP4826806A1
0001 The present invention relates to a negative electrode for an all solid-state battery and an all solid-state battery including same, the negative electrode comprising: a current collector, a first layer which is positioned on the current collector and is composed of an oxide of a metal that can be alloyed with lithium and a first binder; and a second layer which is positioned on the first layer and is composed of a carbon-based material and a second binder.
Absstract of: EP4826822A1
The present invention relates to a solid electrolyte, a method for preparing the same, and a lithium secondary battery comprising the same. Specifically, the present invention relates to a sulfide-based solid electrolyte comprising one or more of Li2O, Li2SO4, and P2O5, a method for preparing the same, and a lithium secondary battery comprising the same.
Absstract of: EP4826770A1
In general, according to an approach, an electrode (3) includes a current collector (3a) containing aluminum or an aluminum alloy, and an active material-containing layer(3b). The active material-containing layer (3b) contains particles (30) containing a niobium titanium-containing oxide. The electrode satisfies the following expression (1): 0.08≤I1/I2≤0.25 the I1 is an intensity of a first peak having the highest intensity within a range where 2θ is 46° or more and 48° or less in a diffraction diagram obtained by X-ray diffraction on a surface of the active material-containing layer. the I2 is an intensity of a second peak having the highest intensity within a range where 2θ is 25° or more and 27° or less in the diffraction diagram. In a cross section of the active material-containing layer along a thickness direction thereof, an average aspect ratio of the particles is 2 or less.
Absstract of: EP4826781A1
0001 A solid electrolyte layer includes a first layer (110) and a second layer (120) laminated on the first layer (110). The first layer (110) includes an outer peripheral region (112) and a central region (114) located inward of the outer peripheral region (112) in a plane direction. A reduction resistance of the second layer (120) is higher than a reduction resistance of the outer peripheral region (112) and a reduction resistance of the central region (114) in the first layer (110). An elongation of the outer peripheral region (112) of the first layer (110) at a yield point is greater than an elongation of the central region (114) of the first layer (110) at a yield point and an elongation of the second layer (120) at a yield point. An ionic conductivity of the central region (114) of the first layer (110) is greater than an ionic conductivity of the outer peripheral region (112) of the first layer (110) and an ionic conductivity of the second layer (120).
Absstract of: EP4826858A1
Disclosed is a secondary battery including: a case open on at least one of a first side or a second side and including an accommodating space formed therein; an electrode assembly accommodated in the accommodating space and including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; and a cap assembly coupled to the case to seal the accommodating space, and including a positive electrode terminal electrically connected to the positive electrode, and a negative electrode terminal electrically connected to the negative electrode, wherein a vent hole is formed in the case or the cap assembly, and a vent, which is configured to rupture upon a pressure in the accommodating space exceeding a predetermined reference pressure, is coupled to the vent hole.
Absstract of: EP4825521A1
0001 Disclosed are a top cap welding apparatus for cylindrical battery cells, the top cap welding apparatus including a transfer unit configured to transfer a cylindrical battery case in which an electrode assembly having an outwardly exposed electrode tab is received, a pressing unit located in front of the battery case, the pressing unit being configured to press the battery case, a support unit located at the rear of the battery case, the support unit being configured to support the battery case, a top cap holder configured to locate a top cap at the rear of the electrode tab, a top cap support unit configured to support the rear of the top cap, and a welding unit configured to weld the electrode tab and the top cap to each other, wherein the welding unit includes a welding mask unit configured to bring the electrode tab into tight contact with the top cap, the welding mask unit having an inner space, and a debris removal unit including a shield gas injection unit configured to inject inert gas toward the inner space.
Absstract of: EP4826834A1
0001 According to exemplary embodiments of the present disclosure, a pack housing is provided. The pack housing includes: a base plate intersecting a first direction; a cooling channel within the base plate, comprising a sub-flow path and a main flow path supplying coolant to the sub-flow path; and a blocking member within the sub-flow path, wherein the blocking member includes a bimetal part comprising a first metal and a second metal having different thermal expansion coefficients and arranged in a second direction intersecting the first direction.
Absstract of: EP4826882A1
0001 A rechargeable battery, including an electrode assembly, a case accommodating the electrode assembly, the case including one or more opened portions, a cap plate coupled to each of the one or more opened portions of the case, an electrode terminal at the cap plate, a first vent portion at one of the case and the cap plate, the first vent portion being rupturable by a first rupture pressure, and a second vent portion opposite to the first vent portion, the second vent portion being rupturable by a second rupture pressure different from the first rupture pressure.
Absstract of: EP4826823A1
A sulfide-based solid electrolyte is represented by Chemical Formula 1 below and has an argyrodite crystal structure. Chemical Formula 1 Li7-aP1-yMyS4.5-b-yObXaIn Chemical Formula 1, M is bismuth (Bi) or zirconium (Zr), X is one or more halogen elements, 1 ≤ a ≤ 2, 0 ≤ b < 1, and 0 ≤ y < 0.5 (provided that a case where both b and y are 0 is excluded).
Absstract of: EP4826862A1
There is provided a road safety equipment battery (100) which is rechargeable and configured to be charged by a charger. The road safety equipment battery (100) comprises a housing (110) having a top surface (112), a bottom surface (114), and side surfaces (116). The road safety equipment battery (100) further comprises a rechargeable cell (120) enclosed by the housing (110), a first electric terminal (130) arranged at the top surface (112), a second electric terminal (140) arranged at the top surface (112), and a recess (150) arranged at an edge portion of the top surface (112), wherein the recess (150) is configured to accommodate a corresponding protrusion of a charger (200).
Absstract of: EP4826794A1
0001 Disclosed are a positive electrode for a rechargeable lithium battery, and a rechargeable lithium battery including the positive electrode. The positive electrode for a rechargeable lithium battery includes a positive electrode active material layer including a lithium nickel-based positive electrode active material, a polymer, and a linear conductive material; and a current collector supporting the positive electrode active material layer.
Absstract of: EP4826820A1
An electricity storage device (1) according to an embodiment of the present disclosure includes a case (10), a current collector terminal (30, 40) (positive electrode herein), and an insulating member (50). The insulating member (50) is joined to the terminal mounting hole (18) and the current collector terminal (30, 40) so as to fill a gap between the current collector terminal (30, 40) and the terminal mounting hole (18) of the case (10). The case (10) includes a first roughened portion (60) and a second roughened portion (62). The first roughened portion (60) is provided on at least one surface that is around the terminal mounting hole (18) so as to surround a perimeter of the terminal mounting hole (18), within a joining region (J1, J2) with the insulating member (50). The second roughened portion (62) is provided on at least one surface of the case (10) that is around the terminal mounting hole (18), outside of the joining region (J1, J2) with the insulating member (50).
Absstract of: EP4826769A1
According to one approach, provided is an electrode (10) including an active material-containing layer (10b) containing an oxide active material and fibrous carbon. Luminance has periodical variance along a direction on a principal surface of the active material-containing layer (10b).
Absstract of: EP4825532A1
0001 A connector interface may include a housing including at least one opening; a circuit board within the housing, the circuit board including a plurality of electrical contacts; and a plurality of flexible conductive members on the circuit board over the plurality of electrical contacts. The plurality of flexible conductive members may extend through the at least one opening of the housing, and the plurality of flexible conductive members may be configured to come into electrical contact with the plurality of electrical contacts when pressed toward the plurality of electrical contacts.
Absstract of: EP4826365A1
A battery pack detection device and a battery pack detection method. The battery pack detection device comprises: a gantry truss (1), a first camera set (2), second camera sets (3), and a processor. The gantry truss (1) comprises a first frame (12) and a second frame (11), wherein the first frame (12) comprises first support beams (121), and a first linear element (42) is provided on the first support beams (121); and the second frame (11) comprises second support beams (111), and a second linear element (52) is provided on the second support beams (111). The first camera set (2) is slidably arranged on the first linear element (42) in a second direction, and is used for capturing top surface images of a battery pack. Two opposite second camera sets (3) each are slidably arranged on the second linear element (52) in the second direction, the second camera sets (3) are rotatably connected to the second linear element (52) around a third direction, and the second camera sets (3) are used for capturing side surface images and end surface images of the battery pack. The processor is used for receiving the top surface images, the side surface images, and the end surface images, and detecting the appearance of the battery pack on the basis of the top surface images, the side surface images, and the end surface images.
Absstract of: EP4825805A1
0001 Provided is a method for continuous manufacturing of an electrolyte containing an alkali metal hexafluorophosphate. The method comprises a mother liquor preparation step of preparing a mother liquor in a slurry form containing an organic solvent, an alkali metal hexafluorophosphate dissolved therein, and unreacted alkali metal fluoride particles within a reactor; a filtering step of introducing a portion of the mother liquor into a first cross-flow filter to obtain a filtrate and a retentate, the filtrate being obtained by filtering the unreacted alkali metal fluoride particles from the mother liquor and including the organic solvent and the alkali metal hexafluorophosphate; a refluxing step of refluxing the retentate obtained in the filtering step into the reactor and a transporting step of transporting the filtrate obtained in the filtering step to a subsequent process; and a reaction proceeding step including backwashing a second cross-flow filter with a makeup organic solvent in a molar flow rate equal to a molar flow rate of the organic solvent contained in the filtrate of the transporting step to obtain a backwash effluent; and supplying the backwash effluent into the reactor.
Absstract of: EP4825467A1
0001 The present disclosure provides a filter structure, including a base frame having a hollow, and a filter part including a plurality of filters in the base frame to filter foreign matter in a gas, the plurality of filters having different angles with respect to a flow direction of the gas.
Absstract of: EP4825806A1
0001 A positive electrode according to some embodiments of the present disclosure may include a current collector and a positive electrode active material layer on the current collector. The positive electrode active material layer may include a positive electrode active material. The positive electrode active material may include a first positive electrode active material including a first lithium cobalt-based composite oxide having an aluminum amount greater than or equal to about 0.4 wt% based on 100 wt% of a total metal in the first lithium cobalt-based composite oxide, excluding lithium, and may include a second positive electrode active material including a second lithium cobalt-based composite oxide having an aluminum amount of greater than or equal to about 0.5 wt% based on 100 wt% of a total metal in the second lithium cobalt-based composite oxide excluding lithium.
Absstract of: EP4826767A1
A dry electrode manufacturing device includes machine-direction stretching rolls configured to stretch a dry electrode film in a first direction while transporting the dry electrode film in a first direction. The dry electrode manufacturing device also includes transverse-direction stretching rolls configured to stretch the dry electrode film in a second direction perpendicular to the first direction while transporting the dry electrode film in the first direction. The machine-direction stretching rolls and the transverse-direction stretching rolls are alternatively positioned in the first direction.
Absstract of: EP4825922A1
To address the issue of poor adhesion of existing water-based conductive coatings on the surface of oil-contaminated aluminum foil, the present application provides a carbon material and a preparation method thereof, a water-based conductive coating, and a carbon-coated aluminum foil. The method includes the following steps: mixing water, an alcoholizing agent, and the carbon material uniformly and performing an alcoholization treatment; and modifying the alcoholized carbon material using a surface modifier. The surface modifier includes one or more of hydroxyalkanoates or phosphates to obtain a modified carbon material. In the present application, the alcoholization treatment increases the number of hydroxyl groups on the surface of the carbon material available for grafting. Subsequently, the carbon material is modified with the surface modifier. The modified carbon material possesses an affinity for rolling oil. When applied in a water-based conductive coating, it can work in synergy with the high oil absorption characteristics of the carbon material to break through the "blockade" of the oil film. This allows the polar groups in the coating resin to contact the substrate and generate attractive forces, leading to improved adhesion. In the water-based conductive coating, the filling amount of the carbon material can be further increased to reduce coating resistance.
Absstract of: US20240204379A1
A battery system, battery packs and battery modules are disclosed. The battery module comprises a plurality of cells mounted within a housing. The housing has a plurality of openings respectively for a corresponding cell. The module has a plurality of groups of cells. Each group comprises a plurality of parallel connected cells from among the plurality of cells. The plurality of groups is connected in series. The module has a plurality of current limiting elements. Each current limiting element are electrically connected in a parallel path to one or both terminals of cells which are parallelly connected. The current limiting elements may be passive or active elements. The current limiting elements may be integrated in or separate from busbars which are connected to terminals of the cells.
Absstract of: EP4826778A1
0001 The present invention relates to a lithium metal electrode and a method for manufacturing the same, wherein the lithium metal electrode of the present invention includes a current collector, a metal layer positioned on at least one surface of the current collector and including a lithium alloy, and a protective layer positioned on the metal layer and including first amorphous carbon having a specific surface area of 450 m<2>/g or more.
Absstract of: EP4826891A1
The present invention provides a lithium secondary battery having excellent cycle characteristics and excellent temperature stability of a tab. A lithium secondary battery comprising: a laminate including a plurality of negative electrodes, a plurality of separators, and a plurality of positive electrodes; a plurality of negative electrode tab lead portions extending from the laminate; and a negative electrode tab joined to the plurality of negative electrode tab lead portions, in which the negative electrode tab lead portion is a lead portion in which a negative electrode current collector constituting the negative electrode extends from the laminate, the negative electrode tab lead portion and the negative electrode current collector include a resin layer and a copper layer formed on both surfaces of the resin layer, in a 20 pattern of an X-ray diffraction measurement of the copper layer, there is a peak A at least at 42.9° or more and 43.9° or less, a ratio (B/A) of an intensity of a peak B at 50.0° or more and 51.0° or less to an intensity of the peak A is 0.3 or less, and a half-value width of the peak A is 0.2° or less.
Absstract of: EP4826776A1
0001 The present invention relates to a lithium metal electrode and a method for manufacturing the same, wherein the lithium metal electrode of the present invention includes a current collector, a coating layer positioned on at least one surface of the current collector and including a lithiophilic alloy material, and a protective layer positioned on the coating layer, and wherein the coating layer is disposed in an area of 25.0% to 80.0% based on an entire area of the current collector.
Absstract of: EP4826773A1
0001 The present invention relates to a lithium metal electrode and a method for manufacturing the same. The lithium metal electrode of the present invention includes a current collector including Fe and Ni, and a metal layer positioned on at least one surface of the current collector and including a lithium alloy.
Absstract of: EP4826744A1
The present invention provides a method for producing a sulfide solid electrolyte capable of enhancing solubility of a raw material when producing the sulfide solid electrolyte by a melting method. The present invention relates to a method for producing a sulfide solid electrolyte containing at least one element of Sn, Si and Sb by heating and melting a sulfide solid electrolyte raw material containing at least one element of Sn, Si and Sb in a gas atmosphere containing a sulfur element and cooling and solidifying the obtained melt, wherein the heating and melting increases the valence of the element contained in the sulfide solid electrolyte raw material.
Absstract of: EP4825270A1
0001 An assembled base (1) for placing spring modules, comprising: unit plates (11) and connecting members (12) for connecting the unit plates (11). A plurality of connecting mating members (13) are arranged on the unit plates (11) at symmetrical positions, and the two connecting mating members (13) arranged at the symmetrical positions are rotationally symmetrical; each connecting member (12) comprises an operating member (121) and a limiting column (122) placed in an arc-shaped groove; the operating member (121) is used for driving the limiting column (122) to move between a first position and a second position relative to the arc-shaped groove; two limiting columns (122) are arranged, and an included angle of 180° is formed between the two limiting columns (122); when being located at the first position, the two limiting columns (122) are respectively located at the release ends (132) of the arc-shaped grooves in the two unit plates (11); and when being located at the second position, the two limiting columns (122) are respectively located at the limiting ends (131) of the arc-shaped grooves in the two unit plates (11), and are in limiting fit with the limiting ends (131) in a direction opposite to the direction where the limiting columns (122) are inserted into the arc-shaped grooves. An elastic pad, comprising a base (1) and spring modules (2), wherein the spring modules (2) are arranged on the base (1) in an array, and the base (1) is the assembled base (1).
Absstract of: WO2025125808A1
This embodiment of the invention discloses a battery indication method for an aerosol provision system and the aerosol provision system itself. The system can accommodate aerosol-generating material for at least two puffing sessions; the method comprises: monitoring the puffing session status of the system; controlling the output of an indication of the system's remaining battery level in response to detecting a preset puffing session status. Compared to the prior art, this invention enables indication of remaining battery life based on puffing session status. This allows users to understand the remaining battery life for each puffing session, facilitating timely feedback.
Absstract of: EP4826903A1
0001 A liquid injection system and method for a battery cell. The liquid inj ection method for a battery cell is applicable to an upper-level computer, and comprises: in response to a battery cell to undergo liquid injection arriving at a liquid injection station, acquiring corresponding position memory information of the battery cell in a tray; determining an actual liquid preparation amount and a preset liquid preparation amount corresponding to a liquid injection mechanism deployed at the liquid injection station; and when the difference between the actual liquid preparation amount and the preset liquid preparation amount is less than or equal to a preset difference value, acquiring liquid injection data of the battery cell, wherein the liquid injection data is acquired by the liquid injection mechanism when performing liquid injection on the battery cell on the basis of the actual liquid preparation amount and the position memory information.
Absstract of: EP4826833A1
The present disclosure relates to a partition jig for a secondary battery penetration test, and a penetration test apparatus and method using the same. The technical object to be solved is to suppress swelling by pressing an electrode plate charged for a penetration test of a secondary battery, thereby eliminating the possibility of explosion that may occur during a test. To this end, the present disclosure provides a partition jig for a secondary battery penetration test, and a secondary battery penetration test apparatus and method using the same, wherein the partition jig includes a main body configured to support a case of a secondary battery, a pressing portion which protrudes from the main body and enters through a perforation formed in the case of the secondary battery to press an electrode plate of an internal electrode assembly, and a nail through-hole which is formed in the pressing portion and through which a nail for a secondary battery penetration test passes.
Absstract of: EP4825796A1
The present invention relates to lithium sulfide powder and a method for preparing the same, and provides lithium sulfide powder including lithium sulfide (Li2S) and lithium oxide (Li2O), and having an oxygen content of 2.4 wt% to 7.1 wt%.
Absstract of: EP4825208A1
This inhalation device for generation an aerosol by heating an aerosol source comprises: a power source unit (111) configured to be capable of supplying power to a heating unit (121) for heating the aerosol source and to be chargeable by means of power received from an external power source; a main body side board unit (90) on which an MCU (1161) controlling the supply of power to the heating unit (121) is mounted; and a case having a power source accommodating portion housing the power source unit (111), and a board accommodating portion housing the main body side board unit (90). The power source unit (111) includes a battery (1111), a charging terminal (1117) configured to be able to receive power from the external power source, and a charging IC (1116) for controlling charging of the battery (1111) by means of power received by the charging terminal (1117).
Absstract of: EP4825795A1
0001 The present invention relates to a carbon-lithium compound and a method for preparing lithium sulfide, wherein the carbon-lithium compound is an intermediate product for preparing lithium sulfide powder and has a pellet shape, includes an oxide, and the oxide may be 1.0% or less based on a second XRD peak value of lithium sulfide (Li<2>S).
Absstract of: EP4826798A1
0001 The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of reducing the resistance of an electrochemical device and yielding a mixture sheet with excellent adhesion to a substrate, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, the tetrafluoroethylene-based polymer composition containing a polar group in an amount of less than 0.020 meq/g based on the tetrafluoroethylene-based polymer composition, being non melt-processible, and having an apparent density of less than 0.50 g/mL.
Absstract of: WO2025126023A1
Method for allocating thermal cooling power in a vehicle with an electric powertrain comprising a refrigeration cycle cooling circuit (CC) through which a refrigerant fluid flows, and including a cabin evaporator (EVAP), for cooling a passenger compartment of the vehicle, and a plurality of cooling devices (CHL1, CHL2), so-called chillers, for cooling one or more batteries of the powertrain, each cooling device (CHL1, CHL2) comprises a battery evaporator (EV_B1, EV_B2) in a heat exchange relationship with a cooling liquid flowing through a battery cooling circuit of the powertrain, wherein it is possible to increase the cooling performances and the comfort in the passenger compartment during the simultaneous activation of the cabin evaporator (EVAP) and of the cooling devices (CHL1, CHL2), thanks to the possibility of dynamically adjusting the number of cooling devices (CHL1, CHL2) which are simultaneously active.
Absstract of: WO2025128888A1
Disclosed is a method for producing an ordered graphitic carbon. Said method includes contacting a material including disordered elemental carbon and a metal with chlorine gas, thereby yielding a gaseous product comprising a chloride of the metal and a solid product comprising the ordered graphitic carbon. A lithium ion battery comprising the ordered graphitic carbon.
Absstract of: EP4825227A1
The power supply unit (110) of the inhalation device (100) comprises: a power source unit (111), and a control unit (116) configured to control at least one of charging and discharging of the power supply unit (111). The power source unit (111) is replaceably and removably mounted in the power supply unit (110). The control unit (116) is capable of performing an identification process to identify the type of power source unit (111) mounted in the power supply unit (110).
Absstract of: EP4826783A1
The purpose of one aspect of the present invention is to provide an anode active material. The anode active material includes: silicon-based particles; and a coating layer disposed on the surfaces of the silicon-based particles, wherein an average particle diameter (D50) of the silicon-based particles is 1.0-2.8 µm, the coating layer includes a polymer, and in the Raman spectrum of the anode active material, a full width at half maximum of a peak positioned in a 480-540 cm-1 region may be greater than 23 cm-1.
Absstract of: WO2025125538A1
The invention provides a process for preparing a crystallized metal sulphate comprising nickel and/or cobalt, said process comprising the steps of: i. forming an aqueous metal sulphate solution by reacting sulphuric acid with a raw material feed comprising nickel and/or cobalt in water in presence of a reducing agent; ii. crystallizing said metal sulphate from said aqueous metal sulphate solution to form a crystallized metal sulphate in a mother liquor, the mother liquor comprising an uncrystallized metal sulphate and optionally one or more metal impurities; iii. separating said crystallized metal sulphate from said mother liquor comprising an uncrystallized metal sulphate and optionally one or more metal impurities; iv. reacting at least a portion of said uncrystallized metal sulphate in said mother liquor with a sulphidizing agent in an aqueous medium, thereby obtaining a slurry consisting of a solid phase comprising a metal sulphide precipitate and an aqueous phase comprising one or more impurities; and v. separating said solid phase comprising a metal sulphide precipitate and said aqueous phase comprising one or more impurities and sulphuric acid.
Absstract of: EP4825997A1
The method for recycling valuable metals according to the present invention comprises: preparing Ni-Co-Mn alloy particles having a compound including lithium and aluminum positioned on a surface thereof; primarily acid-leaching the alloy particles to selectively remove the compound including lithium and aluminum positioned on the surface of the alloy particles; and obtaining valuable-metal recovered alloy particles from which the compound including lithium and aluminum has been removed.
Absstract of: EP4826802A1
The present disclosure relates to a polyimide binder for a secondary battery negative electrode material that may improve charge-discharge efficiency and increase silicon content.
Absstract of: WO2025123086A1
The present disclosure provides a composite electrode material comprising submicrometer particles of an oxocarbon salt (eg a monocyclic oxocarbon alkali metal salt having a formula of Mm(CO)n (wherein M = Li, Na or K; 2 ≤ m ≤6; n= 4, 5 or 6), and a functionalised carbon-based material (eg graphene oxide). The composite electrode material may be suitable for use in an electrochemical device under ultra-low temperature conditions.
Absstract of: EP4826849A1
A liquid cooling plate and a battery pack are provided. The liquid cooling plate includes a plate body and a separator. The plate body defines a cooling chamber, and the plate body is provided with a liquid inlet and a liquid outlet. The cooling chamber communicates with outside through the liquid inlet and the liquid outlet. The separator is installed to the plate body and separates the cooling chamber into cooling flow-channels, and adjacent cooling flow-channels communicate with each other. The separator is non-uniformly distributed at the plate body. Where the cooling flow-channel has a smaller flowing area, the cooling liquid flows faster, thereby increasing the flowing speed of the cooling liquid. Where the cooling flow-channel has a larger flowing area, the cooling liquid flows slower, thereby prolonging the heat exchange time of the cooling liquid and improving the uniformity of heat dissipation of the liquid cooling plate.
Absstract of: EP4826797A1
0001 The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of reducing the resistance of an electrochemical device and yielding a mixture sheet with excellent adhesion to a substrate, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, containing a tetrafluoroethylene-based polymer and a macromolecular compound containing an ionic group, the ionic group being contained in an amount of 0.020 meq/g or more based on the tetrafluoroethylene-based polymer composition.
Absstract of: WO2025128430A1
A composite particle comprised of interspersed spinel and disordered rocksalt domains therein may be made by removing lithium from a disordered rocksalt to form a lithium deficient disordered rocksalt and heating the lithium deficient disordered rocksalt for a time and temperature to form the composite particle.
Absstract of: EP4826791A1
0001 The present invention relates to a positive electrode active material for a lithium secondary battery, which is a lithium transition metal oxide containing excess lithium, excess nickel, and a buffer metal element, wherein the lithium transition metal oxide has a molar ratio of lithium to the lithium transition metal oxide of 1.02 to 1.1 and a molar ratio of nickel to transition metal of 0.75 or more, and wherein the lithium transition metal oxide has a structure in which a lithium layer and a transition metal layer are alternately stacked, and anisotropic contraction and expansion during charging and discharging are suppressed as at least a part of lithium lattice sites in the lithium layer is substituted with the buffer metal element.
Absstract of: EP4826788A1
Provided, according to exemplary embodiments of the present invention, is a negative electrode active material capable of improving the life characteristics of a secondary battery. The negative electrode active material comprises, in wt%,: 0.01-0.05% of iron (Fe), 0.0025-0.0035% of boron (B), 0.0025-0.0035% of phosphorus (P), and the balance of silicon (Si) and inevitable impurities. Provided, according to other exemplary embodiments of the present invention, are a negative electrode comprising the above-described negative electrode active material, and a secondary battery including same.
Absstract of: WO2025128346A1
A modular battery energy storage system comprising a frame having a wiring harness and a plurality of battery module support assemblies. A plurality of storage modules for storing energy are adapted to slidably engage with the frame along the battery module support assemblies and electrically connect to the wiring harness via a wiring harness connector. A wiring box is electrically connected to the wiring harness and used for coupling AC power to/from the wiring harness.
Absstract of: EP4826793A1
The present disclosure relates to a cathode material and a method for preparing same, a battery, and an electrical device. The cathode material includes a composition represented by Formula (1): LiaNixMnyCozM1bM2cO2 Formula (1), in which: 0.9≤a≤1.1, 0.5≤x<1, 0
Absstract of: EP4826876A1
The present application relates to the technical field of batteries, and provides a battery module, a battery, and an electric device. The battery module comprises battery cells, end plates, and side plates. Each end plate comprises an end plate body and an insertion structure, the end plate body defines a first surface, and the first surface extends in the length direction and the width direction of the end plate; the insertion structure is formed on the first surface, insertion grooves are respectively formed in the two ends of the insertion structure in the length direction, and the insertion grooves extend in the width direction; and each side plate comprises a bent part, and the bent part is inserted into the corresponding insertion groove.
Absstract of: EP4826799A1
The disclosure provides a tetrafluoroethylene-based polymer composition for a binder for an electrochemical device, capable of yielding a mixture sheet with excellent uniformity, and a binder for an electrochemical device, an electrode mixture, an electrode, and a secondary battery each containing the composition. Provided is a tetrafluoroethylene-based polymer composition for use in a binder for an electrochemical device, the tetrafluoroethylene-based polymer composition having an average particle size of 1 µm or more and 300 µm or less and an average aspect ratio of 2.0 or less.
Absstract of: EP4826792A1
0001 The present invention relates to a positive electrode active material for a lithium secondary battery, which is a lithium transition metal oxide containing excess lithium, excess nickel, and a buffer metal element, wherein the lithium transition metal oxide has a molar ratio of lithium to the lithium transition metal oxide of 1.02 to 1.1 and a molar ratio of nickel to transition metal of 0.75 or more, and wherein the lithium transition metal oxide has, as a basic framework, a structure in which a lithium layer and a transition metal layer are alternately stacked, anisotropic contraction and expansion during charging and discharging are suppressed as a part of the buffer metal element in the transition metal layer is substituted into the lithium layer and a part of lithium ions in the lithium layer is substituted into the transition metal layer, and the lithium transition metal oxide has a sphericity of 0.8 or more.
Absstract of: EP4826784A1
The present invention relates to an anode active material, a method for manufacturing same, and a secondary battery including same. The anode active material includes: a silicon-carbon composite including crystalline carbon, silicon-based particles bound to the surface of the crystalline carbon, and amorphous carbon on the surfaces of the crystalline carbon and silicon-based particles; and a carbon coating layer covering the surface of the silicon-carbon composite, wherein the anode active material may include 0.05-0.25 wt% of sulfur based on the total weight thereof.
Absstract of: EP4826838A1
The present invention relates to a valuable-metal recovery composition and a method for recovering valuable metals. The valuable-metal recovery composition includes a valuable-metal recovery alloy including a carbon layer, and a lithium compound, wherein the carbon layer is disposed on at least a part of at least one of a surface and an inside of the valuable-metal recovery alloy, and the content of carbon (C) in the carbon layer is 60 wt% or more based on 100 wt% of the carbon layer.
Absstract of: EP4826786A1
0001 One aspect of the present invention provides: a precursor for a negative electrode material of a lithium secondary battery; and a method for manufacturing same, wherein by controlling the molding density of a negative electrode material precursor of a lithium secondary battery, high capacity characteristics and excellent lifespan characteristics of a negative electrode material can be ensured.
Absstract of: WO2025124686A1
Battery management systems (BMSs) are required to estimate many non-measurable values that describe the actual operating condition of batteries, such as the state of charge (SOC) or the state of health (SOH). In order to improve this evaluation, many physical states and parameters can be estimated using physics-based models (PBMs). These estimates could be used to improve the control and prognosis of batteries. The invention proposes a method to estimate the state of health (SOH) parameters of a lithium-ion battery cell, using interconnected sigma-point Kalman filters (SPKFs) and a single-particle model with electrolyte dynamics (SPMe). The observability of each eSOH parameter is assessed and the state/parameter estimation approach is described. The method is capable of estimating the eSOH parameters and all the degradation modes that can occur inside a lithium-ion battery cell using only cell voltage and current measurements.
Absstract of: EP4825937A1
One embodiment of the present invention relates to a battery adhesive, a battery laminate, a battery packaging material, or a tab lead, and the battery adhesive satisfies the following requirements (i) to (iii).(i) a graft-modified product of at least one base polymer selected from polyolefins with at least one carbodiimide monomer selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2) is contained,(ii) 0.1 to 50 mmol of a carbodiimide group is contained per 100 g of the battery adhesive, and(iii) a density is 0.870 to 0.940 g/cm3;wherein in the formula (1), R1 is a hydrogen atom or a methyl group, R2 is an alkyl group or aryl group optionally having a substituent, in the formula (2), R3 is a hydrogen atom or a methyl group, R4 is an alkyl group or aryl group optionally having a substituent, and m is an integer of 2 or more.
Absstract of: EP4826790A1
The present invention is a negative electrode active material having negative electrode active material particles, in which the negative electrode active material particles include a porous carbon structure, an amorphous low-valent nanosilicon oxide is dispersed inside the porous carbon structure, the low-valent nanosilicon oxide includes states where SiOx: x < 1.0, and at least a portion of the surface of the low-valent nanosilicon oxide exposed on the surface layer portion of the porous carbon structure is coated with a decomposition product and/or polymer of an organosilicon compound represented by the following general formula (1) : Si(R1)l(R2)m(R3)4-l-m (1)in which R1 is an alkyl group having 1 to 20 carbon atoms, R2 is an alkenyl group having 2 to 20 carbon atoms, R3 is an alkynyl group having 2 to 20 carbon atoms, and "1" and "m" each independently represent an integer of 0 to 4. This provides a negative electrode active material that can increase capacity while maintaining battery characteristics.
Absstract of: EP4825799A1
According to exemplary embodiments of the present invention, provided is a silicon-carbon composite capable of improving lifespan characteristics of a secondary battery. The silicon carbon-composite is a silicon-carbon composite for a negative electrode active material, comprising a carbon matrix and silicon nanoparticles captured in the carbon matrix, wherein the surface roughness (Rq) of the silicon-carbon composite may be 4-50 nm.
Absstract of: EP4826890A1
Provided are a method for preventing tearing of a tab, a tab, an electrode assembly, and a battery. The method for preventing the tearing of the tab includes: providing an adhesive material at a welding portion of the tab to form a buffering member at least partially covering the tab. By providing the adhesive material at the welding portion of the tab where tearing is likely to occur, to form the buffering member at least partially covering the welding portion, the tab can be prevented from tearing at the welding portion, reducing a defect rate of tab tearing.
Absstract of: EP4826901A1
0001 A battery (100) and an electrical device (1000). The battery (100) comprises a case assembly (20), a first heat exchange assembly (30), a battery cell assembly (101), and a first insulating member (71), wherein the case assembly (20) comprises a case (21); the first heat exchange assembly (30) comprises a first heat exchange member (31), the first heat exchange member (31) being fixed to a bottom wall (211) of the case (21); the battery cell assembly (101) is arranged in the case assembly (20), and the side of the battery cell assembly (101) that faces the bottom wall (211) of the case (21) is bonded to the bottom wall (211) of the case (21) and the first heat exchange member (31) by means of a first bonding layer (34); and the first insulating member (71) is at least partially arranged between the battery cell assembly (101) and the side of the first heat exchange member (31) that faces away from the bottom wall (211) of the case (21), the first bonding layer (34) covering the first insulating member (71). While achieving insulation between the battery cell assembly (101) and the first heat exchange member (31), the technical solution does not affect the continuous fitting arrangement between the first bonding layer (34) and the battery cell assembly (101), such that the reliability of the connection fit can be improved, enhancing the overall structural strength of the battery (100), and thus improving the reliability of the battery (100).
Absstract of: EP4826330A1
0001 The present application discloses an edge detection method and apparatus for a battery insulation part, and a battery production line. In the edge detection method for a battery insulation part, the battery insulation part is configured to wrap at least a side surface of a battery cell of a battery. The method includes: enabling at least two light source assemblies to irradiate an edge to be detected of the insulation part; enabling an imaging assembly arranged to face the edge to be detected to image the edge to be detected, so as to obtain an edge image; and identifying the position of the edge to be detected from the edge image. The edge detection method in the present application can solve a problem of performing standardized, stable and reliable edge detection on the battery insulation part, and by making the edge to be detected of the battery insulation part more clearly visible in the edge image, improves accuracy of extracting the edge to be detected from the edge image.
Absstract of: EP4826813A1
0001 Disclosed are a transfer tray with significantly improved battery cell transfer efficiency and a battery cell activation system including the same. According to an aspect of the present embodiment, there are provided a transfer tray capable of significantly improving the transfer efficiency of battery cells and a battery cell activation system including the same, capable of significantly reducing the transfer time of battery cells.
Absstract of: EP4826774A1
0001 The present invention relates to a lithium metal electrode and a method for manufacturing the same. The lithium metal electrode of the present invention includes a current collector, a metal layer positioned on at least one surface of the current collector and including a lithium alloy, a protective layer positioned on the metal layer, and a coating layer positioned on a surface of the protective layer and including at least a portion of LiF, wherein, when measured by X-ray photoelectron spectroscopy (XPS), an intensity of a peak appearing at 684 eV to 686 eV is greater than an intensity of a peak appearing at 687 eV to 689 eV.
Absstract of: WO2025125543A1
The present invention relates to a positive electrode active material for rechargeable batteries, wherein the positive electrode active material comprises lithium, oxygen, nickel, cobalt, and manganese, wherein the positive electrode active material is a powder comprising single particles and/or secondary particles, wherein each of the single particles consists of only one primary particle and each of the secondary particles consists of at least two primary particles and at most twenty primary particles as observed in a SEM image in a field of view of at least 45 μm x at least 60 μm, wherein the atomic content of Ni, relative to the total amount of Ni, Co, and Mn, of 45.0 to 95.0 at%, as determined by ICP-OES; having an atomic content of Al, relative to the total amount of Ni, Co, and Mn, of 0.3 to 3.0 at%, as determined by ICP-OES; wherein the atomic content of Co, relative to the total amount of Ni, Co, and Mn, of 3.0 to 30.0 at%, as determined by ICP-OES; wherein the atomic content of Mn, relative to the total amount of Ni, Co, and Mn, of 3.0 to 35.0 at%, as determined by ICP-OES; wherein the positive electrode active material further comprises: aluminum and has an atomic ratio of Al to the total amount of Ni, Co, and Mn of 1.0 to 7.0, as determined by XPS analysis, and cobalt and has an atomic ratio of Co to the total amount of Ni, Co, and Mn of 0.25 to 0.45, as determined by XPS analysis.
Absstract of: EP4826779A1
The present invention relates to a lithium metal electrode and a method for manufacturing the same. The lithium metal electrode of the present invention includes a current collector and a protective layer disposed on at least one surface of the current collector, wherein the protective layer includes a powder-type carbon-based material and powder-type metal particles, and an average particle diameter of the metal particles is 250 nm or less.
Absstract of: EP4826893A1
0001 The present disclosure relates to a secondary battery and a method of the same. A current collector according to the present disclosure includes a body portion and a receiving portion formed at a bending-directional end of the body portion. Certain portions of some foil tabs are received in the receiving portion and welded to the current collector. The certain portions of the foil tabs are melted and integrated with a portion of the body portion and at least a portion of the receiving portion by welding. The present disclosure may prevent an electrode assembly positioned under a void region from being affected during a welding process. Accordingly, damage to a separator of the electrode assembly during the welding process is prevented.
Absstract of: EP4825642A1
A battery slot according to the present invention, comprises: a slot frame forming an accommodation space into which a battery is inserted and including an entrance/exit formed by one side of the accommodation space being open; a door coupled to the slot frame to open and close the entrance/exit; a detection assembly that is coupled to the slot frame and detects whether the battery is a battery suitable for charging; and a control unit that sets the door to a locked state or an unlocked state on the basis of information detected by the detection assembly, wherein the detection assembly may include: a detection frame coupled to the slot frame and provided with an opening corresponding to the entrance/exit; a detection button that is disposed on the detection frame and is pressed and moved by the battery as the battery enters the opening; and a detection unit that detects movement of the detection button.
Absstract of: EP4826856A1
An insulation sheet according to one embodiment of the present disclosure is an insulation sheet disposed between a first battery cell and a second battery cell, comprising: an insulation pad portion; and a packaging member that wraps around the entire outer surface of the insulation pad portion, wherein: the packaging member comprises a body surface covering the front and rear surfaces and the upper and lower surfaces of the insulation pad portion and a pair of extension surfaces covering both ends of the insulation pad portion, one end of the pair of extension surfaces is connected to the body surface covering the rear surface of the insulation pad portion, the other end of the pair of extension surfaces passes both ends of the insulation pad portion and extends to both ends of the body surface covering the front surface of the insulation pad portion, and the first battery cell is disposed between the other ends of the pair of extension surfaces, and the second battery cell is disposed on the rear surface of the insulation pad portion.
Absstract of: EP4826768A1
A secondary battery (1) may include a positive electrode (112) and a negative electrode (114) facing each other with a separator (116) interposed therebetween. The negative electrode may include a negative electrode current collector (122); a negative electrode composite layer (10) disposed on the negative electrode current collector and containing graphite particles (11); and an adhesive layer (12) disposed between a surface of the negative electrode composite layer and the separator. The surface of the negative electrode composite layer that faces the separator may include a first surface region (10_1) and a second surface region (10_2). An arithmetic mean roughness of the first surface region may be smaller than an arithmetic mean roughness of the second surface region.
Absstract of: EP4826160A2
The present invention provides a coating device comprising: a coater head; an accommodation chamber which is positioned inside the coater head and accommodates a coating solution; an ultrasonic wave generation unit which is positioned inside the coater head and applies ultrasonic waves to the coating solution accommodated in the accommodation chamber; and a coating bar which transfers the coating solution from the accommodation chamber onto at least one surface of a substrate transferred in one direction.
Absstract of: EP4826364A1
This application discloses a flexible connection system for a cell assembly (100) and a detection method for a cell assembly (100). The system includes: an upper-level computer, configured to send an image acquisition signal to a first camera (320) and a second camera (340); a first prism (310), configured to image a first side of the cell assembly (100) in a third direction; the first camera (320), configured to acquire, based on the image acquisition signal, an image of the first side of the cell assembly (100) in the third direction from the first prism (310) to obtain a first image; a second prism (330), configured to image a second side of the cell assembly (100) in the third direction; and the second camera (340), configured to acquire, based on the image acquisition signal, an image of the second side of the cell assembly (100) in the third direction from the second prism (330) to obtain a second image; where the upper-level computer is further configured to receive the first image and the second image, determine a first detection result of a cathode-end snap-fit member (130) based on the first image, and determine a second detection result of an anode-end snap-fit member (140) based on the second image. In this way, detection of whether the snap-fit members are installed in place is realized.
Absstract of: EP4826844A1
0001 The present application belongs to the technical field of battery production. Provided are a battery apparatus, a refrigerant heat exchange apparatus and an electrical apparatus. The battery apparatus comprises a box body assembly, a battery cell assembly and a refrigerant heat-exchange component, wherein the box body assembly has an accommodating cavity; the battery cell assembly is arranged in the accommodating cavity; the battery cell assembly comprises a plurality of battery cell groups, each battery cell group comprising a plurality of battery cells stacked in a first direction, and the plurality of battery cell groups being arranged side by side in a second direction, the refrigerant heat-exchange component has a heat-exchange surface, the refrigerant heat-exchange component comprises a plurality of main heat-exchange flow channels, which are arranged in parallel in the second direction, each main heat-exchange flow channel comprises a main flow diversion node portion, a main flow confluence node portion and a main region flow channel portion; each main region flow channel portion comprises heat-exchange sub-flow channels connected in parallel; the projection region of each battery cell group on the heat-exchange surface covers at least one main heat-exchange flow channel; and the second direction is perpendicular to the first direction. The present application aims to improve the temperature equalization capability of the refrigerant heat-exchange component.
Absstract of: EP4826860A1
0001 The embodiments of the present application provide a battery cell, a battery, and an electrical apparatus. The battery cell comprises a housing, a top cover, and an electrode assembly. The housing is provided with an accommodating space and an opening. The top cover seals and covers the opening. The electrode assembly is arranged within the accommodating space. The top cover comprises a cover body, a connecting side wall and a groove formed between the cover body and the connecting side wall, and an end portion of the housing extends into the groove and is connected with the top cover. When the electrode assembly expands cyclically and produces gas during charging and discharging, the housing deforms outwards when force is produced at the connection between the housing and the top cover, and the connecting side wall limits and supports the housing, so as to limit further outward deformation of the housing to a certain extent, thereby reducing the risk of fatigue cracking of the connecting structure between the housing and the top cover, improving the problem of failure of the connecting structure between the housing and the top cover, and increasing the service life.
Absstract of: EP4826814A1
An embodiment of the present disclosure provides an apparatus for manufacturing an electrode assembly in which a positive electrode plate and a negative electrode plate are alternately stacked with a separator interposed between them, the apparatus comprising: a separator supply unit that supplies the separator; an electrode supply unit that supplies the positive electrode plate and the negative electrode plate, respectively; and a plurality of stack units in which a stacking process of the electrode assembly is performed, wherein each of the plurality of stack units is movable along a circulation path, and wherein when the stacking process of the electrode assembly is completed in one of the plurality of stack units, the stacking process is performed in the other of the plurality of stack units.
Absstract of: EP4826817A1
0001 A battery cell, a battery pack, an electric device, and an energy storage device used in the technical field of batteries. The battery cell comprises a casing and at least two groups of bare cells. An accommodating cavity is formed in the casing; the at least two groups of bare cells are disposed in the accommodating cavity; each bare cell comprises at least two layers of electrode sheets; the at least two layers of electrode sheets are stacked in a thickness direction; the same group of bare cells are stacked in the thickness direction; and different groups of bare cells are spread in a plane perpendicular to the thickness direction. Different groups of bare cells are spread in the plane perpendicular to the thickness direction, thereby reducing the number of stacked bare cells, and the major surfaces of different groups of bare cells will not press each other, so that the swelling force of the major surfaces can be reduced, the breakage risk of the electrode sheets is reduced, and the service life of the battery cell is prolonged.
Absstract of: EP4825583A1
0001 A fire-resistant pad of the present disclosure comprises: a first layer comprising a non-combustible material; a second layer comprising a carbonate-based flame retardant and a silicone resin; and a third layer comprising a silicone-aerogel composite containing a silicone resin and an aerogel, wherein the silicone-aerogel composite contains an aerogel in an amount of 0.5 wt.% or more and 40 wt.% or less and a silicone in an amount of 60 wt.% or more and 99.5 wt.% or less, based on the total weight of the third layer, and each of the first layer, the second layer, and the third layer is laminated in at least one or more layers.
Absstract of: EP4826842A1
0001 A heat exchange member, a case, a battery, and an electric device. The heat exchange member (20) is used for a case (100) for a battery (1000), and comprises: a heat exchange plate (21); a back plate (22) provided on one side of the heat exchange plate (21) in a first direction (Z) and connected to the heat exchange plate (21), the first direction (Z) being the thickness direction of the heat exchange plate (21); and heat exchange tubes (23) provided between the heat exchange plate (21) and the back plate (22) and fixedly connected to the heat exchange plate (21) and/or the back plate (22).
Absstract of: EP4826895A1
Embodiments of the present application provide a battery cell, a battery and an electrical apparatus, wherein the battery cell comprises: a casing (1), comprising a first wall (12), wherein the first wall (12) is provided with a pressure relief component (2); an electrode assembly (3) arranged in the casing (1), wherein the electrode assembly (3) comprises an electrode body (31) and a first tab (32), and the first tab (32) is led out from one end of the electrode body (31); and a first current collector (4), configured to electrically connect the first tab (32) and the casing (1), wherein the first current collector (4) is at least partially located between the first tab (32) and the pressure relief component (2), the first current collector (4) is provided with at least one ventilation part (41) and at least one guide part (42), the ventilation part (41) penetrates through the first current collector (4) in the thickness direction of the first wall (12), and the guide part (42) is arranged in the peripheral area of the ventilation part (41).
Absstract of: EP4826837A1
0001 A battery system with a thermal management architecture is disclosed that enables selective thermal regulation across multiple independent zones of a battery cell arrangement. The system includes a plurality of thermal regulation zones defined within the periphery of the battery cell structure. A thermal exchange media, such as a dielectric coolant, is selectively routed through these zones using independently controllable inlet and outlet ports connected to flow control manifolds. This enables targeted cooling based on real-time or predicted thermal demands in specific battery regions.
Absstract of: EP4826835A1
A battery cell interconnection and measurement system includes a busbar configured to electrically connect one or more battery cells, a heating element configured to thermally couple one or more battery cells to provide heating and thermal regulation, and an electronic substrate configured to couple sensors to the heating element. The sensors measure characteristics of the one or more battery cells. The battery cell interconnection and measurement system further includes a thermally conductive layer configured to provide mechanical stability to the heating element, the electronic substrate, and the busbar, and to form the battery cell interconnection and measurement system.
Absstract of: EP4826883A1
0001 A battery pack (10) includes an enclosure (12), a heat-source component (24) disposed in the enclosure (12), and a flame-barrier plate (36, 38, 132) coupled to the enclosure (12). The flame-barrier plate (36, 38, 132) is configured to be in an open position or a closed position. The battery pack (10) further includes an actuator (140) configured to support the flame-barrier plate (36, 38, 132) in the open position. The flame-barrier plate (36, 38, 132) is configured to transition to the closed position when support from the actuator (140) is removed. The battery pack (10) further includes a sensor (142) and a controller configured to receive a thermal-runaway signal from the sensor (142), and control the actuator (140) to remove support from the flame-barrier plate (36, 38, 132) in response to receiving the thermal-runaway signal.
Absstract of: EP4826841A1
The present application provides a heat exchange assembly (13), a box body (10), a battery (100) and an electrical device. A heat exchange flow channel (133) is formed in the heat exchange assembly (13). The heat exchange assembly (13) comprises a first plate body (131) and a second plate body (132), the first plate body (131) comprising a first connecting layer member (1311), and the second plate body (132) comprising a reinforcing layer member (1321) and a second connecting layer member (1322). The reinforcing layer member (1321) and the second connecting layer member (1322) are stacked and connected to each other. The second connecting layer member (1322) and the first connecting layer member (1311) are stacked and hermetically connected to each other, so as to close the heat exchange flow channel (133).
Absstract of: EP4826889A1
The present application relates to the field of batteries. Provided are a battery cell, a battery and an electric device. The battery cell comprises a casing and an electrode assembly, wherein the electrode assembly is accommodated in the casing. The electrode assembly comprises a body portion, a first tab and a second tab, wherein the first tab and the second tab respectively protrude from two ends of the body portion, and the first tab and the second tab are asymmetrically arranged. The first tab and the second tab of the battery cell are asymmetrically arranged; and compared with the solution in the prior art where two tabs of a battery cell are symmetrically arranged, the first tab and the second tab of the electrode assembly of the battery cell have no axis of symmetry, and the first tab and the second tab are stressed unevenly, such that the electrode assembly does not easily rotate, and thus the first tab and the second tab are not easily torn, thereby facilitating the prolonging of the service life of the battery cell.
Absstract of: EP4826869A1
0001 The present disclosure relates to a battery module including at least one battery cell. The battery module comprises a housing (100) in which at least one battery cell (211) is arranged, a heat blocking assembly (300) arranged on at least a surface of the battery cell (211), and an upper bracket (400) arranged on an upper portion of the battery cell (211). Based on a height direction of the battery cell (211), at least a portion of the upper bracket (400) is in surface contact with the heat blocking assembly (300).
Absstract of: EP4826859A1
The present application provides a battery cell, a battery, and an electric apparatus. The battery cell includes an electrode assembly, a housing, and an insulating film, where the electrode assembly is accommodated in the housing, and the insulating film is disposed on an outer surface of the housing. Since the outer surface of the housing of the battery cell is provided with an insulating film having insulation performance, the battery cell has good insulation capability and is not prone to short-circuiting with adjacent battery cells, which is conducive to improving the reliability of the battery.
Absstract of: EP4826879A1
An energy storage device includes a first major component associated with an electrochemical subsystem and a second major component associated with an electrical control subsystem. The components are configured to join at an electrically isolable interface formed by complementary subcomponent connectors. The interface enables the major components to be selectively coupled or uncoupled to establish or interrupt electrical continuity, facilitating safe handling, service, and transport. In some embodiments, the connectors include embedded conductive elements, male-to-female structures, or removable pin interfaces that provide electrical isolation when disengaged. The device may further include enclosure structures, mounting features, cable-routing paths, and thermal or shielding elements that support modular assembly and system integration. Methods of assembling, isolating, servicing, and preparing the energy storage device for installation or operation are also provided.
Absstract of: EP4826884A1
0001 A secondary battery (1) may include a positive electrode (112) and a negative electrode (114) facing each other with a separator (116) interposed therebetween. The negative electrode may include a negative electrode current collector (122); a negative electrode composite layer (10) disposed on the negative electrode current collector and containing graphite particles (11); and an adhesive layer (13) disposed between a surface of the negative electrode composite layer and the separator. In an XRD profile of the negative electrode composite layer, a degree of orientation, which is defined as an intensity ratio obtained by dividing an intensity of a (110) plane of a graphite crystal by an intensity of a (002) plane of the graphite crystal, may be 0.03 or greater. A thickness of the adhesive layer may be greater than an arithmetic mean roughness of the surface of the negative electrode composite layer.
Absstract of: EP4826872A1
The present application relates to the technical field of batteries, and provides a battery and an electric device. The battery comprises a case, a plurality of battery cell groups, thermal management components, and a protective element. The case is provided with a first wall in a first direction. The plurality of battery cell groups are accommodated in the case, the plurality of battery cell groups are arranged in a second direction, each cell group comprises at least one battery cell, and the second direction intersects with the first direction. In the second direction, each thermal management component is arranged between two adjacent battery cell groups, and the thermal management component is configured to exchange heat with the battery cells. The protective element is arranged between the first wall and the plurality of battery cell groups in the first direction, and the protective element is configured to transfer external force borne by the first wall to the battery cell groups so as to protect the thermal management components, thereby reducing the impact of collision force generated on the first wall on the thermal management components, reducing the risk of leakage and other failures of the thermal management components during use, improving the use reliability of the battery, and prolonging the service life of the battery.
Absstract of: EP4826937A1
0001 An aeronautical energy network system (100, 101) with an energy network (1) having a defined nominal voltage operating range (Vr) to which electrical loads (11,12) and a battery (2) are connected, the battery (2) comprising a plurality of battery cells (22) arranged in cell groups being the cells forming a group connected in series in a fixed manner, the battery having an electrical connection circuit with controllable switching means configured to at least selectively connect cell groups to each other in series or in parallel producing, in a corresponding connection state of the circuit, a battery output instant voltage (Vi). The system further comprises a controller (21) configured to command the controllable switching means to change the connection state of the circuit between at least two different connection states, of which one is a connection state producing a battery output instant voltage (Vi) outside the nominal voltage operating range (Vr) of the network; and the other is a connection state producing a battery output instant voltage (Vi) within the nominal voltage operating range of the network.
Absstract of: EP4826772A1
0001 A secondary battery (1) may include a positive electrode (112) and a negative electrode (114) facing each other with a separator (116) interposed therebetween. The negative electrode may include a negative electrode current collector (122), a negative electrode composite layer (10) disposed on the negative electrode current collector and containing graphite particles (11) and a binder (14), and a resin layer (12) disposed between a surface of the negative electrode composite layer and the separator. The negative electrode composite layer may include a surface layer (10A) in contact with the resin layer and a main layer (10B) between the surface layer and the negative electrode current collector. In an XRD profile of the main layer, a degree of orientation, defined as an intensity ratio of a (110) plane to a (002) plane of a graphite crystal, may be 0.03 or greater.
Absstract of: EP4826912A1
The present invention concerns a male battery connector 100, providing positional tolerance compensation in all the three directions X Y and Z of an orthogonal Cartesian reference system. The connector can be used for connection in electrical systems (Battery, Battery control unit, Battery junction box) in Electrical vehicles. The male battery connector 100 is adapted to be mounted on a battery control unit, for example a PCB assembly, for the connection to a header of a battery pack; said male battery connector 100 comprising an insulating housing 111 that houses a screw 112, suitable to mechanically connect the male battery connector 100 to said header, and conductive elements 113 comprising a conductor braid 113a and a sleeve 113b, suitable to electrically connect the male battery connector 100 to the header 200; wherein the male battery connector 100 is such that the housing 111 comprises a vertical element 114, an horizontal element 115 and a coupling element 116, coupling the vertical element 114 with the horizontal element 115; and the coupling element 116 is movable vertically onto the vertical element 114 and the horizontal element 115 is movable onto the coupling element 116, along a first direction and a second direction perpendicular to each other, on the plane perpendicular to the vertical movement direction of the coupling element 116.
Absstract of: EP4826952A1
0001 A charging system includes a power conversion circuit (PC) configured to convert AC power to DC power, a voltage conversion circuit (VC) configured to convert a voltage of DC power supplied from a first power storage battery (B1, B2) to a specified voltage, a charge plug connection detection circuit (DCc1, DCc2) configured to detect whether a charge plug (Pc) is electrically connected to the first power storage battery (B1, B2), a first control circuit (CNT1) configured to control operation of the power conversion circuit (PC), and a second control circuit (CNT2) configured to control a detection state of the charge plug connection detection circuit (DCc1, DCc2). The second control circuit (CNT2) causes the charge plug connection detection circuit (DCc1, DCc2) to detect that the charge plug (Pc) is electrically connected to the first power storage battery (B1, B2) during charging of the first power storage battery (B1, B2).
Absstract of: EP4826766A1
0001 The present disclosure relates to a negative electrode manufacturing system and a method for manufacturing a negative electrode using the same. Since the negative electrode manufacturing system exhibits magnetism of mutually different polarities in the body of the upper block and the die lip of the lower block of the dual-slot die, it is possible to directly discharge a negative electrode slurry to which a magnetic field has been applied onto a moving current collector. In addition, the negative electrode slurry discharged from the dual-slot die is applied such that the in-plane crystallographic planes of the carbon-based negative electrode active material are oriented at a predetermined angle with respect to the surface of the current collector on which the negative electrode slurry is applied, thereby providing the advantage of achieving a high degree of orientation of the carbon-based negative electrode active material after rolling.
Absstract of: EP4826850A1
Disclosed is a battery pack and a vehicle including the same. The battery pack includes a battery module having a plurality of battery cells; a pack case configured to accommodate the plurality of battery modules; and a cooling member accommodated in the pack case and configured to contact the plurality of battery modules, wherein some of the plurality of battery modules are in contact with one surface of the cooling member, and the remainder of the plurality of battery modules are in contact with the other surface of the cooling member.
Absstract of: EP4825636A1
0001 The present disclosure refers to an electrical energy system (100) and a method for a vehicle (1000). 0002 The electrical energy system (100) for a vehicle (1000) includes a high voltage system (10) including a plurality of battery cells (12) arranged in at least two strings (14a, 14b) of battery cells (12), the battery cells (12) of each string (14a, 14b) being connected in series, a low voltage system (16), at least one DC/DC converter (18a, 18b) for each of the strings (14a, 14b) of battery cells (12) connected in series to respective opposite ends of the strings (14a, 14b) of battery cells (12), the DC/DC converters (18a, 18b) being configured to down-convert a high voltage from the high voltage system (10) to a low voltage provided to the low voltage system (16), a cell supervision system (20) for supervising voltages of individual battery cells (12) of the high voltage system (10) including a separate communication loop for each of the strings (14a, 14b) of battery cells (12) for independently supervising battery cell voltages within each of the strings (14a, 14b) of battery cells (12), a switching unit (24) configured to selectively connect the strings (14a, 14b) in series or disconnect the strings (14a, 14b) from each other and to selectively connect at least one of the strings (14a, 14b) with or disconnect at least one of the strings (14a, 14b) from the high voltage system (10) and the low voltage system (16) and a control unit (26) configured to, in a cas
Absstract of: EP4826955A1
0001 A regulated power supply system, an integrated system, and a method are disclosed for providing regulated electrical power to an electrical load from a battery group. In an example, the regulated power supply system includes a buck regulator operable to regulate an unregulated voltage provided at an unregulated high-side interface of the battery group to a regulated voltage at a regulated high-side interface to which an electrical load can be connected. The buck regulator is configured to command a high-side driver to pass electrical energy to an inductor via the unregulated high-side interface during an on phase of a duty cycle during which the inductor is charged. The buck regulator is further configured to discontinue passing the electrical energy to the inductor during an off phase of the duty cycle.
Absstract of: EP4826886A1
A battery module according to an embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked, a busbar frame formed on a front surface and a rear surface of the battery cell stack, respectively, a connecting portion connected to an upper portion of the battery cell stack and configured to interconnect the busbar frames formed on the front surface and the rear surface, a first connector connected to both side end portions of the connecting portion, a second connector fixed to the busbar frame, and coupled to the first connector, and a dam portion disposed in a lower portion of the second connector and fixed to the busbar frame.
Absstract of: EP4826868A1
0001 A battery structure includes: a plurality of battery cells along one direction, each of the battery cells including a vent in one surface thereof; and a vent duct on the battery cells to correspond to the vent of each of the battery cells, the vent duct being in communication with the vent and configured to flow a gas discharged from the vent. The vent duct includes: a base portion having openings located on opposite sides thereof, the base portion including a plurality of vent holes in a surface adjacent to the battery cells at positions corresponding to the vents of the battery cells, respectively; and a plurality of partitions inside the base portion between the plurality of vent holes, the plurality of partitions defining a flow path for the gas discharged from the vent.
Absstract of: EP4826870A1
0001 1. A pack housing, comprising: a base plate (110); a side member (120) forming an accommodation space together with the base plate and connected to the base plate; a first cross member (130) extending in a direction intersecting the side member; and a second cross member (140) coupled to the first cross member, wherein the first cross member (130) comprises: a concave portion (132) disposed concavely in a direction intersecting the base plate so that the second cross member (140) is inserted into the concave portion; and a protruding portion (136) connected to an end portion of the concave portion (132), protruding in the direction intersecting the base plate, and configured to come into contact with the second cross member (140).
Absstract of: EP4826863A1
Provided are an end cover assembly, an energy-storage apparatus, and a power-consuming device. A second mounting hole of an upper insulating member is in communication with a first mounting hole of an end cover. A first mounting recess surrounds the second mounting hole. A press ring is mounted in the first mounting recess, and a first surface of the press ring and a bottom wall surface of the first mounting recess cooperatively define a first exhaust passage. A distance between a second end and a first end of the first exhaust passage is less than or equal to a length of the first exhaust passage. A peripheral side surface of the press ring and a side wall surface of the first mounting recess cooperatively define a second exhaust passage. A third mounting hole of the press ring is in communication with the second mounting hole and the first end.
Absstract of: EP4826867A1
0001 The present disclosure refers to a battery module (100). The battery module (100) includes a battery cell stack (140) with battery cells (141) stacked between a first end side (I) and a second end side (II) in a stacking direction (D). The battery module (100) further includes a module wall (130), the module wall (130) comprising two oppositely arranged side walls (131, 132) extending along the stacking direction (D) and between which the battery cell stack (140) is arranged, and an end wall (133) arranged on the first end side (I) of the battery cell stack (140) and connecting the two side walls (131, 132), Furthermore, the battery module (100) includes a first end plate (110) arranged on the second end side (II) of the battery cell stack (140) and opposite the end wall (133), wherein each of the side walls (131, 132) is connected to the first end plate (110) by means of a form-fit sliding connection (SC), wherein a sliding direction (SD) extends perpendicular to the stacking direction (D).The disclosure further relates to a method for assembling a battery module (100) according to the disclosure and a battery pack including a plurality of battery modules (100) according to the disclosure.
Absstract of: EP4826815A1
A battery pack according to an embodiment of the present disclosure comprise: first and second battery cell stacks formed by stacking a plurality of battery cells; a pack case configured to house the first and second battery cell stacks and to be opened on both sides; end plates disposed on the opened both sides of the pack case; first and second pressing plates located inside the pack case and disposed between the first battery cell stack and the second battery cell stack; and a pressing unit disposed between the first and second pressing plates to apply pressure to the first and second battery cell stacks.
Absstract of: EP4826328A1
0001 Disclosed are a secondary battery measurement apparatus for measuring the width and thickness of a secondary battery and a secondary battery measurement method including the same, and more particularly a secondary battery measurement apparatus including a seating die configured to allow the secondary battery to be seated thereon, a pair of vertical frames located on an upper surface of the seating die so as to extend a predetermined length in a height direction while being spaced apart from each other by a predetermined distance, a horizontal frame extending a predetermined length, the horizontal frame being connected to each of the pair of vertical frames, a pair of width measurement sensors provided at side surfaces of the pair of vertical frames, respectively, and a thickness measurement sensor provided at the horizontal frame, and a secondary battery measurement method including the same.
Absstract of: EP4826864A1
0001 A top cover assembly, a battery cell, and an electricity-consumption device are provided. The top cover assembly includes a top cover, a terminal post, an upper plastic member, and a sealing ring. The top cover has a first surface and a second surface opposite to each other. A first hole and a first mounting recess are defined in the top cover. The terminal post passes through the first hole. The upper plastic member includes an upper-plastic-member body and a protrusion connected to the upper-plastic-member body and sleeved on the terminal post. The sealing ring is sleeved on the terminal post, where the sealing ring is partially located in the first hole and is in interference fit with the protrusion, and the sealing ring located in the first hole is further in contact with a bottom surface and a first transitional curved surface of an outer surface of the protrusion.
Absstract of: EP4826855A1
0001 A battery assembly includes: a plurality of battery cells, each including a vent part on one side surface thereof; a plurality of cooling plates located between corresponding adjacent battery cells among the plurality of battery cells, and accommodating a coolant; a plurality of connecting members connecting the plurality of cooling plates to each other to allow the coolant to flow; and a vent plate below the plurality of cooling plates and located on a side surface where the vent part of each of the plurality of battery cells is located, the vent plate to allow the coolant discharged through the connecting members to flow.
Absstract of: EP4826836A1
0001 A method for a battery pack includes irradiating light into a peripheral region of the battery pack. The method further includes detecting light from the peripheral region, and detecting that gas leaking from the battery pack based on data associated with the detected light.
Absstract of: EP4826866A1
0001 A battery pack includes: a plurality of battery cells along a first direction; a housing having an opening at one side, and accommodating the plurality of battery cells; a cover coupled to the housing and covering the opening; and a fire-resistant barrier assembly below the cover, and including: a fire-resistant barrier having one end connected to the cover, and extending in the first direction; a metal weight at another end of the fire-resistant barrier; and a fixing member fixing the fire-resistant barrier in a rolled state or a folded state. The fixing member is to melt at a temperature greater than or equal to a threshold, and the fire-resistant barrier is to unfold or unroll to shield a space between the plurality of battery cells when the fixing member is melted.
Absstract of: EP4826785A1
0001 One embodiment of the present invention provides a positive electrode active material for a sodium secondary battery, comprising a sodium composite transition metal oxide including at least sodium, nickel, manganese, M1, and doping metals, wherein M1 is iron or cobalt, wherein the doping metals consist of calcium and copper, and wherein the positive electrode active material satisfies Relation Formula 1A.
Absstract of: EP4826894A2
A power storage cell (100) includes: an electrode body (10) including a first electrode (10A) and a second electrode (10B); a first coupling member (50A) and a second coupling member (50B) each disposed at a position facing the electrode body (10); a first tab (90A) that electrically connects the first electrode (10A) to the first coupling member (50A); and a foam layer (140). The foam layer (140) is in contact with the first tab (90A), to thereby support the first tab (90A).
Absstract of: EP4826853A1
0001 Battery module (100), comprising: a stack (10) of a plurality of battery cells (12) with spacers (14) arranged between the battery cells (12); and a battery module housing (20) for accommodating the stack (10) and comprising a bottom (22), a first side wall (24) and an opposing second side wall (26), wherein the battery module housing (20) is configured to hold a liquid coolant, the stack (10) is immersed in the liquid coolant, and the spacers (14) are configured to allow the liquid coolant to pass through from one side of the stack (10) to the other; wherein the first side wall (24) comprises a first bulge (50) having a first flow passage for the liquid coolant and extending over the entire length of the first side wall (24); the second side wall (26) comprises a second bulge (60) having a second flow passage for the liquid coolant and extending over the entire length of the second side wall (26), and wherein a coolant inlet (52) is provided at one end of the first bulge (50) and a coolant outlet (62) is provided at one end of the second bulge (60).
Absstract of: EP4826839A1
0001 Die Erfindung betrifft eine Vorrichtung (1) zum Nachfüllen von dielektrischem Kühlmedium (17) in einen Kühlkreislauf (2) mit einer Kammer (4), in welche das Kühlmedium (17) durch eine Öffnung (11) mit verschließbarem Deckel (Wartungsklappe 12) einbringbar ist, und mit einem Leitungselement (5) zum Verbinden der Kammer (4) mit dem Kühlkreislauf (2). Die erfindungsgemäße Vorrichtung ist dadurch gekennzeichnet, dass die Kammer (4) im bestimmungsgemäßen Einsatz in Richtung der Schwerkraft (Erdbeschleunigung g) oberhalb des Kühlkreislaufs (2) angeordnet und über das Leitungselement (5) mit diesem direkt oder mittelbar verbunden ist, wobei in dem Leitungselement (5) eine schaltbare Ventileinrichtung (8) angeordnet ist, welche dazu eingerichtet ist, sich in Abhängigkeit eines über einen Leitfähigkeitssensor (10) in der Kammer (4) erfassten Leitwerts des nachgefüllten Kühlmediums (17) zu öffnen und zu schließen.
Absstract of: EP4826854A1
Device (1) for thermal management of battery cells (10) of a battery, comprising a first component (2) and a second component (3), attached to each other, wherein the first component (2) is made of a first material and wherein the second component (3) is made of a second material, and wherein the second material is more flexible than the first material, and wherein the first component (2) is adapted to provide a structural function for the device (1), and wherein the second component (3) is adapted to provide a thermal function with at least one fluid channel (4).
Absstract of: EP4826819A1
A lithium-ion battery configured to suppress alloying of the anode layer and the anode collector, the lithium-ion battery includes a cathode collector, a cathode layer, an electrolyte layer, an anode layer, an anode protective layer and an anode collector, which are stacked in this order; in a first direction perpendicular to a stacking direction, a first-directional end portion of the anode protective layer protrudes in the first direction more than a first-directional end portion of the anode collector; and the anode protective layer includes at least one selected from the group consisting of Ni, Cu, a carbonaceous material and an electroconductive resin.
Absstract of: EP4826899A1
0001 A busbar assembly and a battery pack including the same are disclosed. A busbar assembly includes a first busbar electrically connecting a plurality of battery cells and a second busbar electrically connected to the first busbar and connected to a protection device, in which the second busbar includes a welding portion connected to the first busbar and a binding portion extending from the welding portion and connected to the protection device.
Absstract of: EP4826403A1
0001 This document relates to a battery diagnosis device including an interface configured to acquire present electric current information and present battery temperature information corresponding to a battery unit and a processor configured to compare previous battery temperature information and the present battery temperature information that correspond to the battery unit when the present electric current information is less than a threshold value, and diagnose an abnormality in the battery unit based on the comparison result.
Absstract of: EP4826905A1
0001 Disclosed is a battery module. The battery module includes a frame providing a space therein; a battery cell located inside the frame and including an accommodation portion configured to accommodate an electrode assembly and an electrode lead configured to protrude from the accommodation portion; a bus bar frame assembly located inside the frame and electrically connected to the battery cell; and a fire extinguishing pad located between the bus bar frame assembly and the accommodation portion.
Absstract of: EP4826816A1
A battery (10) includes a positive electrode layer (1), a solid electrolyte layer (2), and a negative electrode layer (3). The positive electrode layer (1), the solid electrolyte layer (2), and the negative electrode layer (3) are laminated in a thickness direction (D). The solid electrolyte layer (2) contains a solid electrolyte (2a) and a support body (2c) made of a plurality of fibers (2b). In a case where, with the solid electrolyte layer (2) seen in cross-section along the thickness direction (D), a direction orthogonal to the thickness direction (D) is called a first direction and the thickness direction (D) is called a second direction, and the length of the fiber (2b) in the first direction is denoted by A and the length of the fiber (2b) in the second direction is denoted by B, an average aspect ratio represented by A/B is 1.5 to 4.3, both inclusive.
Absstract of: EP4826848A1
0001 The present invention relates to thermal management systems for batteries, particularly batteries used in electric vehicles (EVs), stationary generators, or other high-performance energy storage applications. An energy storage device including a major component that includes first and second major subcomponents configured to interconnect at a thermally isolable interface arranged therebetween. The first and second major subcomponents being constituent components of an electrochemical system that is configured to store energy for the energy storage device and cooled via fluid flow in a primary outlet direction across the thermally isolable interface. The first and second major subcomponents being arranged such that the first major subcomponent is thermally isolable from the second major subcomponent for a minimum isolation duration when the energy storage device experiences a detrimental thermal event.
Absstract of: EP4826847A1
A cooling device for cooling a cell is provided, which includes a first stack plate, a second stack plate, a cooling fluid, and a fusible material. The first stack plate is attached to the cell and has a first bonding portion and a first accommodating portion. The first bonding portion surrounds the first accommodating portion. The second stack plate is disposed on the first stack plate and has a second bonding portion and a second accommodating portion. The second bonding portion surrounds the second accommodating portion. The second bonding portion and the first bonding portion are bonded together and collectively form a sealed opening. The first accommodating portion and the second accommodating portion collectively form an accommodating space, and the accommodating space is in fluid communication with the sealed opening. The cooling fluid is disposed in the accommodating space. The fusible material is filled into the sealed opening.
Absstract of: EP4826865A1
A cell stack and a battery pack are disclosed. A battery pack includes a housing, one or more cell stacks accommodated in the housing and including a plurality of battery cells arranged in a first direction, a plurality of partition frames arranged in parallel such that the cell stacks are arranged in the first direction, and an end frame coupled to the partition frame and facing the cell stack in the first direction.
Absstract of: EP4825453A1
Provided is a battery module including a plurality of battery cells and a first fire-extinguishing cell arranged above the plurality of battery cells, and the first fire-extinguishing cell includes an upper frame and a lower frame forming a space in which a first fire-extinguishing material is accommodated, and the lower frame includes a heat-sensitive portion which opens when a heat-sensitive reaction occurs.
Absstract of: EP4826846A1
The present disclosure relates to a pouch-type battery cooling apparatus for removing heat generated from a pouch-type battery (10). A pouch-type battery cooling apparatus according to an embodiment of the present disclosure includes a case (100) configured to accommodate a plurality of pouch-type batteries (10) and including a cooling fluid (11) in direct or indirect contact with the plurality of pouch-type batteries (10) and a support body (200, 211, 212, 213, 214) including a support plate (220, 220a, 220b) disposed between the plurality of pouch-type batteries (10) or pouch-type battery groups (20), the support plate (220, 220a, 220b) supporting the plurality of pouch-type batteries (10) or the pouch-type battery groups (20) by applying pressure in a thickness dimension of the plurality of pouch-type batteries (10), and a plurality of channels (240) formed inside the support plate (220, 220a, 220b), arranged along a planar dimension of the plurality of pouch-type batteries (10), and providing a flow path through which the cooling fluid (11) flows in a height dimension of the plurality of pouch-type batteries (10).
Absstract of: EP4826902A1
A rechargeable battery includes: an electrode assembly; a case accommodating the electrode assembly and including an opening; a cap plate covering the opening of the case and including an electrolyte inlet; and a blocking member including a ball adjacent to the electrolyte inlet on one surface of the cap plate and configured to open and close the electrolyte inlet, and a valve connected to the ball.
Absstract of: EP4826826A1
0001 The present disclosure provides a secondary battery and an electric apparatus. The secondary battery includes a positive electrode sheet, a negative electrode sheet, a separator, and an electrolyte. A conductivity of the electrolyte is 14 mS/cm to 22 mS/cm, and the electrolyte includes a first additive. The first additive includes at least one of compounds represented by Formula I and Formula II, in Formula I, R<1> is selected from H, a fluorine atom, a fluorine-substituted or unsubstituted C1-C12 alkyl group, and a fluorine-substituted or unsubstituted C2-C10 alkenyl group; and in Formula II, R<2>, R<3>, R<4>, and R<5> are each independently selected from a hydrogen atom, a fluorine atom, a fluorine-substituted or unsubstituted C1-C6 alkyl group, a fluorine-substituted or unsubstituted C1-C6 alkoxy group, a C2-C6 alkenyl group, or a C2-C6 alkynyl group, and R<2>, R<3>, R<4>, and R<5> are not all hydrogen atoms.
Absstract of: EP4826821A2
0001 The present invention relates to the technical field of batteries, and discloses a secondary battery and an electric device, the secondary battery comprises a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein the positive electrode plate, the negative electrode plate, and the separator are laminated or wound to form a cell, the number of layers n of the cell satisfies: 50 ≤ n ≤ 80, and the thickness of the cell is 5-15 mm; the electrolyte comprises a solvent comprising a linear solvent having 5-6 carbon atoms, with the mass percentage of the linear solvent having 5-6 carbon atoms in the electrolyte being denoted as S3, where 5% ≤ S3 ≤ 70%; the positive electrode plate comprises a positive electrode current collector, and a positive electrode active layer coated on a surface of at least one side of the positive electrode current collector, the positive electrode active layer comprising a positive electrode active material; the positive electrode active material comprises a Ni element, with the mass percentage of the Ni element in the positive electrode active material being denoted as w, where 0.3 ≤ S3/w ≤ 1.5. The present invention can effectively inhibit the gas generation of battery and reduce the risk of thermal runaway by optimizing the combination of an electrolyte and a positive electrode active material in the lithium-ion battery.
Absstract of: EP4826845A1
The present application provides a cooling plate, a direct cooling assembly, and a battery pack. The cooling plate includes a cooling pipe, at least one pipe joint, and a sealing member. The at least one pipe joint is connected to an end of the cooling pipe to communicate with the cooling pipe, and the sealing member is arranged between the pipe joint and the end of the cooling pipe.
Absstract of: EP4826830A1
0001 In general, according to one approach, a secondary battery (100) including a container member (2), an electrode group (1) having a stacked structure including one electrode (5), the other electrode (3), and a separator (4). At least one side of the one electrode (5) protrudes more than at least one side of the other electrode (3) in a direction intersecting a stacking direction of the electrode group (1). The electrode group (1) satisfies the following formula (1): Ra 2 > Ra 1
where the Ra2 is an arithmetic average roughness of an end portion including the at least one side of the one electrode (5) in the electrode group (1), and the Ra1 is an arithmetic average roughness of an interior portion adjacent to the end portion of the electrode group (1).
Absstract of: EP4825452A1
A battery module, including a plurality of battery cells, a cover part covering the plurality of battery cells, and a fire-extinguishing sheet between the plurality of battery cells and the cover part, wherein the fire-extinguishing sheet includes a first region including a first fire-extinguishing material and a second region including a second fire-extinguishing material, and the second region is within the first region.
Absstract of: EP4826812A1
0001 The electrode assembly according to one or more embodiments includes a first electrode, a second electrode, and a separator for separating the first electrode and the second electrode, bent to form insertion parts respectively accommodating the first electrode and the second electrode, and including a first separator part at a lowermost portion, a second separator part at an uppermost portion and bonded to the first separator part, and a third separator part between the first separator part and the second separator part.
Absstract of: LV16068A
Izgudrojums attiecas uz elektroķīmiskās enerģijas uzkrāšanas un ražošanas tehnoloģijām, īpaši uz modulāru akumulatoru-berzes ģeneratoru ar ārēju aktivāciju. Piedāvātais izgudrojums ir modulārs elektroķīmisks akumulators-berzes ģenerators ar ārēju aktivāciju, kurā enerģijas ģenerēšana un uzkrāšana notiek, izmantojot iekšējo elementu savstarpējo berzi. Konstrukcija ir atvērta, un mitrināmais separators (2) nodrošina nepārtrauktu elektroķīmisko reakciju. Katrs modulis sastāv no alumīnija anoda (1), aktīvās ogles katoda (3) un mitrināta neausta neilona separatora (2), un šie moduļi ir secīgi savienoti uz rotējošas ass (8). Asi darbina ārējs mehānisks spēks, piemēram, vēja, ūdens, tvaika vai citu kustību enerģija, kas izraisa berzi starp elementiem un veicina sprieguma pieaugumu. Šī sistēma ir vienkārša, videi draudzīga un piemērota lietošanai dažādos apstākļos un vidēs, tai skaitā vietās, kur nav pieejami tradicionālie enerģijas avoti. Izgudrojumu iespējams pielāgot dažādos mērogos — no kompaktām, portatīvām ierīcēm līdz lielām, stacionārām enerģijas sistēmām.
Absstract of: FR3174255A1
L’invention concerne un dispositif de dissipation thermique (100), ledit dispositif (100) comprenant un caloduc (10) configuré pour un échange thermique entre, d’une part, des sources chaudes (12), comprenant un organe électrique (14), et, d’autre part, une source froide (15), ledit dispositif (100) comprenant en outre : - un premier organe (30) d’interface thermique en contact avec le caloduc (10) et destiné à être en relation d’échange thermique avec la source froide (15), - un deuxième organe (50) d’interface thermique en contact avec le caloduc (10) et destiné à être en relation d’échange thermique avec l’organe électrique (14) des sources chaudes (12), ledit premier organe (30) d’interface thermique comprenant un refroidisseur (31) muni d’une pluralité d’ailettes (32) formant des surfaces d’échange avec ladite source froide (15). L’invention concerne aussi un boîtier de connexion électrique, un dispositif de stockage d’énergie électrique et un véhicule comprenant un tel dispositif de dissipation. Figure pour l’abrégé : Figure 2
Absstract of: FR3174257A1
Un élément électrochimique comprenant :- au moins une électrode positive comprenant une matière active positive qui est un fluorophosphate lithié de vanadium et/ou l’un de ses dérivés, - au moins une électrode négative comprenant un mélange de matières actives négatives comprenant : de 5 à 99 % en masse d’un oxyde de niobium de structure cristallographique de type Wadsley-Roth, et de 95 à 1% en masse d’au moins un oxyde de titane lithié et/ou un oxyde de titane susceptible d’être lithié. Le mélange de matières actives négatives permet d’améliorer la précision de la détermination de l’état de charge de l’élément électrochimique. Figure d’abrégé : Figure 1
Absstract of: FR3174158A1
L’invention porte sur une composition comprenant un sel de 4,5-dicyano-2-(trifluorométhyl)imidazole (TDI) de sodium de formule (1) (1) comprenant une quantité de produits non cyclisés de formule (1a) et (1b) inférieure ou égale à 100 ppm en poids ainsi qu’un procédé de préparation.
Absstract of: FR3174256A1
Un élément électrochimique comprenant :- au moins une électrode positive comprenant une matière active positive choisie parmi : a) un fluorophosphate lithié de vanadium de formule Li1+xVPO4F (LVPF) où 0≤x≤1 et/ou l’un de ses dérivés, b) un phosphate lithié de manganèse et de fer, c) un mélange de plusieurs composés des groupes a) et b), - au moins une électrode négative comprenant une matière active négative qui est un oxyde de niobium de structure cristallographique de type Wadsley-Roth de formule NbaTibMcOd où 2≤a ; 0≤b<0,5 ; 0≤c ; 5≤d et 2,2≤(d/(a+b+c))≤2,8 ; avec b=0 si c=0 ; M étant choisi dans le groupe constitué de Ca, Fe, La, Zn, Cr, W, Ag, Mo, Ni, Cu, V et des mélanges de ceux-ci. L’élément électrochimique présente une énergie massique et une durée de vie en cyclage améliorées. Figure d’abrégé : Figure 3
Absstract of: FR3174258A1
Module de batterie à empilement d’accumulateurs à emballage souple comprenant un corps intégrant des pastilles de connexion électrique en contact avec pression avec les languettes formant les bornes des accumulateurs. L’invention concerne un module de batterie (M) à pluralité d’accumulateurs (A1, A2…AN+1), en particulier de géométrie prismatique, emballage souple empilés les uns sur les autres et comprenant un ou plusieurs blocs (7) de connexion électrique des languettes formant les bornes de sortie ou pôle (4, 5) des accumulateurs, un bloc de connexion électrique comprenant un corps (70, 70’) dont un logement (71) permet un empilement de pastilles électriquement conductrices (73), qui sont adaptées pour pincer les languettes et ainsi créer une ou plusieurs connexions électriques entre les accumulateurs. Figure pour l’abrégé : fig.4
Absstract of: FR3174221A1
Procédé de qualification (P) mis en œuvre par un système de qualification et comprenant une phase de qualification (PQ1, PQ2) pour qualifier un état de santé (SOH1, SOH2) d’au moins un module d’une batterie NiMH. La phase de qualification comprend : - une étape d’identification (EQ3) durant laquelle une variation de tension mesurée aux bornes de l’au moins un module, pendant une décharge de celui-ci précédant l’étape d’identification, est comparée au moyen d’une fonction de similarité à des variations de tension de référence contenues dans une base de données comprise dans le système de qualification, et associées chacune à un état de santé de référence ; et - une étape de qualification (EQ4) durant laquelle l’état de santé de l’au moins un module est qualifié comme égal à l’état de santé de référence de la variation de tension de référence pour laquelle la fonction de similarité est la plus élevée. Figure de l’abrégé : Figure 1
Absstract of: FR3174273A1
Ensemble de chargeur à commutation (5) installé à bord d’un véhicule à motorisation électrique comprenant un chargeur embarqué (3) et un commutateur de sélection (4,SW), le chargeur (3) étant configuré pour recharger la batterie principale (1,Batt1) depuis une borne de recharge externe, le commutateur de sélection ayant une première position (P1) et une deuxième position (P2), le chargeur embarqué opérant selon un premier mode opératoire (Mode1) lorsque le commutateur de sélection est dans la première position, avec le chargeur raccordé à une borne de recharge externe AC, la batterie principale pouvant alors échanger de l’énergie électrique avec la borne de recharge externe (15) via le chargeur embarqué, le chargeur embarqué opérant selon un deuxième mode opératoire (Mode2) lorsque le commutateur de sélection est dans la deuxième position, la batterie auxiliaire pouvant alors échanger de l’énergie électrique avec un réseau de bord haute tension du véhicule via le chargeur embarqué. Figure de l’abrégé : Fig. 1
Absstract of: FR3174259A1
L’invention concerne une batterie pour véhicule électrique ou hybride, la batterie comprenant un pack-batterie, la batterie comprenant :- une première plaque (110) présentant une première extrémité ;- une deuxième plaque (120) présentant une deuxième extrémité ;- une plaque de jonction (130) présentant une première terminaison et une deuxième terminaison, la première terminaison recouvrant la première extrémité, la deuxième terminaison recouvrant la deuxième extrémité. Figure 1
Absstract of: FR3174161A1
L’invention concerne une composition polymère ayant des propriétés de conduction ionique améliorées, l’utilisation d’une telle composition polymère pour la préparation d’un électrolyte polymère et/ou d’une électrode positive d’une batterie rechargeable, un électrolyte polymère pour une batterie rechargeable comprenant une telle composition polymère, une électrode positive pour une batterie rechargeable comprenant une telle composition polymère, et une batterie rechargeable au lithium ou au sodium comprenant un tel électrolyte polymère et/ou une telle électrode positive. Figure à publier : figure 1
Absstract of: FR3174220A1
L’invention concerne un dispositif (1) de caractérisation d’une cellule électrochimique, avec :- une structure (2) comprenant un premier (21) et un deuxième (22) montants, - une vis (3) traversant le premier montant (21) par un premier orifice fileté pratiqué dans ledit premier montant et débouchant dans un premier espace (E1) défini entre le premier et le deuxième montants,- une barre de flexion (4) disposée le long du deuxième montant (22), entre le premier et le deuxième montant, supportée à ses extrémités, - un emplacement (E2) de maintien pour la cellule électrochimique, défini entre l’extrémité de la vis (3) débouchant dans le premier espace (E1) et une première zone de contact (41) d’une face (42) de la barre de flexion (4) tournée vers le premier montant (21),- un dispositif de mesure de déplacement (6) apte à mesurer la déformation sous contrainte de la barre de flexion (4). Figure pour l’abrégé : Fig 1
Nº publicación: FR3174228A1 16/10/2026
Applicant:
STELLANTIS AUTO SAS [FR]
STELLANTIS AUTO SAS
Absstract of: FR3174228A1
La présente invention a pour objet un procédé de calcul d’une quantité d’un matériau thermoconducteur à déposer par un robot industriel dans un jeu séparant des éléments mécaniques, le procédé comportant les étapes suivantes de calcul (E1) de valeurs de jeux en fonction de valeurs de tolérances dimensionnelles desdits éléments mécaniques, d’acquisition (E2) de données de capabilités et de données de tolérance dimensionnelle associées auxdits éléments mécaniques, de calcul (E3) d’une distribution du jeu se basant sur un algorithme Monte Carlo en fonction desdites données de capabilités et de tolérance et desdites valeurs de jeux estimées, de calcul (E4) d’une distribution du volume de matériau thermoconducteur à déposer en fonction de ladite distribution du jeu et de calcul (E5) de la quantité de matériau thermoconducteur à déposer en fonction d’une donnée cible de couverture et de ladite distribution du volume de matériau thermoconducteur. Figure 1.
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