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1190
results.
Updated on
25/10/2026 [07:33:00]
Results 350 to 375 of 1190
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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.
Nº publicación: EP4825232A1 21/10/2026
Applicant:
JAPAN TOBACCO INC [JP]
Japan Tobacco Inc.
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.
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