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746
results.
Updated on
21/08/2026 [07:19:00]
Results 400 to 425 of 746
Absstract of: US20260237742A1
0000 An electrochemical apparatus includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode active material layer located on at least partial surface of the positive electrode current collector. The positive electrode active material layer has a compacted density of pd mg/cm<3>, where 2.6≤pd≤2.86. 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≤B/A≤8, and 5≤(E+D)/C≤14.
Absstract of: US20260237744A1
An electrochemical apparatus has a volumetric energy density of 850 Wh/L to 900 Wh/L and includes a positive electrode, a negative electrode, and an electrolyte. 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 %, ethyl propionate with a mass percentage of C %, and propyl propionate with a mass percentage of D %; where 0.02≤(A+B)/(C+D)≤0.5 and 1≤D/C≤10.
Absstract of: WO2026166217A1
A lithium secondary battery and an electrical device. The lithium secondary battery comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte. The positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer disposed on at least one side of the positive electrode current collector. The positive electrode film layer comprises a positive electrode active material. The positive electrode active material comprises lithium-containing transition metal phosphate particles. The lithium-containing transition metal phosphate particles comprise lithium iron phosphate particles. The lithium iron phosphate particles comprise a doping element Q. The doping element Q comprises one or more of W, Al, Na, K, Mg, Cu, Mn, Cr, Zn, Pb, Ca, Co, Ni, Sr, Nb, V, Ti, B, S, Si, N, F, Cl, Br, or Zr. The electrolyte comprises propylene carbonate and a compound represented by formula I, where R is selected from halogen, and n is an integer selected from 1 to 6. The lithium secondary battery has good low-temperature fast-charging performance while also achieving excellent cycling stability.
Absstract of: US20260237841A1
A battery pack may include a plurality of battery cells; a pack case configured to accommodate the plurality of battery cells; and a blocking member having a module cover configured to cover an outer side of the battery cells, and configured to guide discharges released from the battery cell to an outer space of the module cover.
Absstract of: WO2026166260A1
Provided are a lithium secondary battery and an electric device. The lithium secondary battery comprises a positive electrode sheet, a negative electrode sheet and an electrolyte. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer provided on at least one side of the negative electrode current collector; the negative electrode film layer comprises a negative electrode active material; and the specific surface area a of the negative electrode active material satisfies: 2 m2/g ≤ a ≤ 5 m2/g. The electrolyte comprises propylene carbonate, a first additive and a compound of formula (I), wherein R is selected from halogen, and n is an integer selected from 1-6; and the first additive comprises at least one of ethylene sulfate, vinylene carbonate, fluoroethylene carbonate, 1,3-propanesultone, 1,3-propenesultone, tetravinylsilane or methylene methanedisulfonate. The lithium secondary battery has good low-temperature fast charging performance and cycle performance.
Absstract of: US20260237645A1
Disclosed is a method for manufacturing a negative electrode for a lithium secondary battery that can reduce the risk of ignition, a negative electrode manufactured by the method, and a lithium secondary battery including the negative electrode. The method includes forming a negative electrode by transferring a lithium metal layer to at least one surface of a negative electrode active material layer including a negative electrode active material, a negative electrode conductive material, and a negative electrode binder After the transfer of the lithium metal layer, a maximum temperature on a surface of the negative electrode is 35° C. or lower.
Absstract of: US20260237739A1
The present application belongs to the technical field of new energy materials and devices, and relates to a gel electrolyte, a preparation method therefor and a solid-state lithium battery. A novel liquid initiator with a low freezing point, a cyclic ether-based polymerization monomer and a plasticizer are mixed to form a homogeneous phase precursor solution, the precursor solution is injected into a battery casing and stood at room temperature (20-35° C.) for in-situ polymerization, and the gel electrolyte-based solid-state battery can be obtained. Compared with the initiation of a common initiators, the gel electrolyte is initiated by the novel initiator, has better low-temperature performance, and forms a high-performance solid-state lithium battery.
Absstract of: US20260235692A1
0000 A battery management apparatus according to an embodiment of the present disclosure includes a profile acquisition unit configured to acquire a differential profile indicating a correspondence relationship between voltage and differential capacity of a battery; and a control unit configured to determine a target peak from among a plurality of peaks included in the differential profile, determine a remaining peak that is other than the target peak among the plurality of peaks as a reference peak, compare a differential capacity of the target peak with a differential capacity of the reference peak, determine a voltage of interest based on a result of the differential capacity comparison, and estimate a degree of degradation of the battery based on a capacity of interest of the battery corresponding to the voltage of interest.
Absstract of: US20260237719A1
0000 A battery cell pressing pad and a battery cell pressing device including the same, wherein the battery cell pressing pad improves the performance of an all-solid-state battery cell. The battery cell pressing pad presses a battery cell with electrodes and solid electrolyte stacked thereon. The battery cell pressing pad includes a first pressing pad in contact with one side of the battery cell, and presses the one side of the battery cell; and a second pressing pad which is stacked on the first pressing pad and in contact with one side of a pressing jig.
Absstract of: WO2026166374A1
A battery cell, a battery pack, and an electric device. The battery cell comprises a casing (10) and an inner core (20); the casing (10) comprises a main body portion (11), and a first cover plate (12) and a second cover plate (13) connected to the main body portion (11); the main body portion (11), the first cover plate (12), and the second cover plate (13) define an accommodating cavity (14); the first cover plate (12) and the second cover plate (13) are arranged opposite to each other; the first cover plate (12) is provided with an explosion-proof valve (121); and the second cover plate (13) is provided with poles (131).
Absstract of: US20260238022A1
A printed circuit board includes a plurality of battery monitoring integrated circuit (BMIC) mounting circuits, each providing an electrical connection for corresponding battery cells, and a connection module providing electrical connections among the first BMIC mounting circuit disposed at one outermost side of the plurality of BMIC mounting circuits, the second BMIC mounting circuit adjacent to the first BMIC mounting circuit, and a first connection terminal, the first connection terminal being connected to a master battery management system (MBMS), the connection module providing a connection between the second BMIC mounting circuit and the first connection terminal when the BMIC is not electrically connected to the first BMIC mounting circuit, and providing connections between the first connection terminal and the first BMIC mounting circuit and between the first BMIC mounting circuit and the second BMIC mounting circuit when the BMIC is electrically connected to the first BMIC mounting circuit.
Absstract of: US20260237640A1
0000 A negative electrode active material, a negative electrode slurry, a negative electrode including the same, and a secondary battery including the negative electrode. The negative electrode active material includes a silicon carbon composite, a carbon layer provided on at least a portion of the silicon carbon composite, and a coating layer of a catechol derivative or a gallol derivative provided on at least a portion of at least one of the silicon carbon composite and the carbon layer.
Absstract of: US20260235701A1
0000 Disclosed herein is a method for short circuit inspection of a secondary battery cell which includes preparing a fully-packaged secondary battery cell, micro-charging the secondary battery cell to a state of charge (SOC) in a range of 0.03% to 0.05%, measuring an open-circuit voltage drop caused by a self-discharge of the micro-charged secondary battery cell, and determining the secondary battery cell as a defective product if a change rate per hour of the measured open-circuit voltage drop exceeds a predetermined reference value.
Absstract of: WO2026165997A1
A gas supply system and a battery swapping station are disclosed. The gas supply system is used for supplying gas to a battery pack (20) in a battery compartment (10), and is characterized by comprising: a supply gas path (100) for supplying gas from the battery compartment (10) in which the battery pack (20) is located to the battery pack (20), and a pressure boosting apparatus (200), a cooling and dehumidifying unit located downstream of the pressure boosting apparatus (200), a pressure reducing apparatus (700) located downstream of the cooling and dehumidifying unit, and an on-off valve (400) located downstream of the pressure reducing apparatus (700), which are sequentially arranged along a gas flow direction in the supply gas path (100). The battery swapping station comprises the gas supply system. Using same can not only prevent condensation water from forming inside the battery pack, but also have the effect of cooling the battery pack.
Absstract of: US20260237845A1
0000 A battery cell includes a battery cell assembly and an outer packaging. The battery cell assembly includes a positive electrode plate, an active material coating is provided on the positive electrode plate, and the active material coating includes a sodium-containing copper-based layered oxide. The outer packaging is configured to encapsulate the battery cell assembly, an air-permeable member is provided on the outer packaging, the air permeability of the air-permeable member is equal to or greater than the maximum required gas venting volume of the battery cell per unit of total cycle time, and the maximum required gas venting volume of the battery cell per unit of total cycle time is obtained by conversion based on the volume of carbon dioxide generated due to oxygen release caused by Cu—O bond breakage in the sodium-containing copper-based layered oxide.
Absstract of: WO2026166497A1
The present application provides an energy storage battery pack, an energy storage system, and a state-of-charge (SOC) equalization method. The energy storage battery pack comprises at least one sodium-ion battery cell or solid-state battery cell and a plurality of lithium iron phosphate battery cells. The at least one sodium-ion battery cell or solid-state battery cell is connected in series to the plurality of lithium iron phosphate battery cells to form a hybrid battery pack, wherein the capacity of the sodium-ion battery cell or solid-state battery cell is greater than that of the lithium iron phosphate battery cells. In the energy storage battery pack of the present application, sodium-ion battery cells are introduced, and the proportion of the sodium-ion battery cells in the energy storage battery pack is set to be between 10% and 50%, thereby solving the problem of incapability of accurately estimating the SOC of existing lithium iron phosphate batteries.
Absstract of: US20260238034A1
A charging method and apparatus, a charging management device, and a computer-readable storage medium are described. The method includes: acquiring a temperature of a battery to be charged; acquiring activation energy data of the battery to be charged; determining a charge cut-off voltage according to the temperature and the activation energy data; and charging the battery to be charged and controlling a maximum charging voltage of the battery to be charged to be less than or equal to the charge cut-off voltage. By using the method, an accuracy of the determined charge cut-off voltage can be improved, thereby enhancing the battery endurance and improving the user experience.
Absstract of: WO2026166185A1
Disclosed in the present application are a secondary battery, a manufacturing method for the secondary battery, and an electronic device. The secondary battery comprises a case, an electrolyte, and an electrode assembly, wherein the electrode assembly and the electrolyte are disposed within the case. The electrode assembly comprises at least two electrode sheet laminates and a plurality of first electrode sheets stacked together. Each electrode sheet laminate comprises a second electrode sheet and two separators. Each separator comprises a first part, a second part, and a third part, the third part being connected between the first part and the second part. The first parts of the two separators are bonded to each other to form a first bonded portion, and the second parts of the two separators are bonded to each other to form a second bonded portion. Parts of the first bonded portions of the at least two electrode sheet laminates are stacked and bonded to each other to form a first bonded member, and parts of the second bonded portions of the at least two electrode sheet laminates are stacked and bonded to each other to form a second bonded member. The present application can improve the drop performance and enhance the safety of the secondary battery while reducing the energy density loss of the secondary battery.
Absstract of: WO2026166262A1
A battery apparatus (100) and an electric device. The battery apparatus (100) comprises a battery case (10), battery cells (20), and a pressure relief mechanism (124), wherein the battery case (10) comprises a lower case body (12), which comprises a base plate (121) and a case body frame (122) connected to the base plate (121); accommodating cavities (123) are defined between the base plate (121) and the case body frame (122); the battery cells (20) are accommodated in the accommodating cavities (123); the side of the case body frame (122) facing away from the accommodating cavities (123) is provided with a clearance cavity (12213), the clearance cavity (12213) having a clearance notch; and the case body frame (122) is provided with a first hole (12215), the first hole (12215) being in communication with the accommodating cavities (123) and the clearance cavity (12213), and the pressure relief mechanism (124) being disposed in the clearance cavity (12213) and blocking the first hole (12215). By disposing the pressure relief mechanism (124) in the clearance cavity (12213), the space occupied by the pressure relief mechanism (124) on the exterior of the battery case (10) can be reduced, thereby helping to reduce the impact on a user interface.
Absstract of: WO2026166311A1
The present application relates to the technical field of batteries, and discloses a mounting structure, a battery apparatus, and an electric device. The battery apparatus comprises a battery case, a plurality of battery cells arranged in the battery case, a case beam, and a mounting structure, wherein the battery case is provided with a connecting hole, and the mounting structure comprises a first locking member and a second locking member; one end of the first locking member is connected to the case beam, and the other end of the first locking member abuts against an inner wall of the battery case and is arranged around the connecting hole; and the second locking member is at least partially disposed outside the battery case, one end of the second locking member passes through the connecting hole and extends into the battery case so as to be connected to the first locking member, the end portion of the second locking member away from the first locking member is provided with an assembly hole, and the assembly hole is configured to be matingly connected to a fastener of a carrier. The technical solution provided in the present application can solve the problem of a high risk of airtightness failure of a battery apparatus.
Absstract of: US20260235690A1
0000 A battery management apparatus includes a setting control unit configured to set a reference voltage that is a reference of determination of a risk caused by a rapid increase of gas, a measurement unit configured to measure a voltage of a battery cell, and a diagnosis unit configured to diagnose the battery cell as a dangerous cell in which a degree of risk caused by the rapid increase of gas is equal to or higher than a predetermined level when a state in which the voltage of the battery cell remains higher than the reference voltage for a first reference time or longer.
Absstract of: US20260237855A1
0000 An electrode assembly, a battery cell, a battery, and a power consuming apparatus. The electrode assembly includes a first electrode plate and a separator. The separator includes two separator layers formed by folding, and the two separator layers cover two opposite ends of the first electrode plate in a thickness direction thereof, respectively. The separator layer is provided with a first edge portion extending beyond an end portion of the first electrode plate in a width direction of the first electrode plate. The first edge portion is opposite to a folded end of the separator. The first edge portions of the two separator layers are connected to each other and form a first joint portion.
Absstract of: US20260237854A1
A battery cell, the battery, an electrical apparatus, a combination apparatus and method, and a processing device. The processing device is configured to process the battery, and includes the combination apparatus. The combination method includes: driving the combination apparatus to combine and fix a part of a separator to a first electrode plate and/or a second electrode plate. The electrical apparatus includes the battery. The battery includes the battery cell. The battery cell includes an electrode assembly. The electrode assembly includes the first electrode plate, the second electrode plate, and the separator. The first electrode plate and the second electrode plate are alternately stacked or are alternately stacked and wound. At least a part of the separator is disposed between the first electrode plate and the second electrode plate, and the part of the separator is combined with and fixed to the first electrode plate and/or the second electrode plate.
Absstract of: US20260237850A1
An electrode assembly including a positive electrode, a negative electrode, and a separator provided between the positive electrode and the negative electrode, in which a dry adhesive force of the separator to the negative electrode is greater than a dry adhesive force of the separator to the positive electrode is provided.
Nº publicación: US20260237720A1 13/08/2026
Applicant:
LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD.
Absstract of: US20260237720A1
0000 Disclosed are a pressing apparatus for secondary battery formation capable of monitoring pressing force in real time such that pressing for formation can be performed while monitoring the contact area between a pressing plate and a battery in real time in order to solve a problem in which lithium is precipitated due to a change in pressing uniformity because the contact area of the battery is not confirmed during a formation process, which is one of secondary battery manufacturing processes, and a pressing method thereof.
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