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IMPREGNATED FABRIC FOR USE IN BATTERY CELLS

Resumen de: WO2025076807A1

A cured fabric that is useful in batteries can be made by impregnating a PET fabric with a binder emulsion that contains a self-crosslinking acrylic polymer binder and an anionic surfactant, which contains (1) a lipophilic moiety and (2) an anionic hydrophilic moiety that is linked to the lipophilic moiety by an oxygenated organic moiety. The combination of the binder and anionic surfactant provides fast wetting of the fabric. The impregnated fabric is cured by heating to crosslink the acrylic polymer. The resulting cured fabric has high tensile strength and good wetting ability with acid solutions used in batteries.

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTRODE USING SAME

Resumen de: EP4794028A1

A nonaqueous electrolyte secondary battery includes a first electrode, a second electrode, a nonaqueous electrolyte, and a separator provided between the first electrode and the second electrode. The first electrode includes a first current collector and a first active material layer supported on the first current collector. The first active material layer contains a first active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200°C or higher and 500°C or lower. In a cross section of the first active material layer, the polymer material forms a plurality of island-shaped regions and is dispersed therein. When the first active material layer is increased in temperature from 25°C to 400°C or higher, the area of the island-shaped regions increases to four times or more in the cross section of the first active material layer.

THERMALLY CONDUCTIVE INTERFACE DESIGN

Resumen de: US2025121536A1

0000 A thermally conductive interface device produced from a thermally conductive interface material is disclosed. The device may be employed in a battery system of an electric or hybrid vehicle. The thermally conductive interface material comprises a composition of at least one silicone base, at least one inorganic filler, at least one silicone oil, a least one peroxide cross-linking agent, and/or at least one of a flame retardant and a colorant. The inorganic fillers and/or the silicone oils may be functionalized or non-functionalized. The silicone base may be a high consistency rubber (HCR) silicone.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTRODE USED THEREFOR

Resumen de: EP4794030A1

A nonaqueous electrolyte secondary battery includes a first electrode, a second electrode, a nonaqueous electrolyte, and a separator provided between the first electrode and the second electrode. The first electrode includes a first current collector and a first active material layer supported on the first current collector. The first active material layer contains a first active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200°C or higher and 500°C or lower. The polymer material has a linear structure.

BATTERY ASSEMBLY AND ELECTRICAL APPARATUS

Resumen de: EP4794083A1

0001 The present application relates to the technical field of batteries, and in particular to a battery assembly and an electrical apparatus. The battery assembly includes: a battery, including a top surface, a bottom surface, and side surfaces; and a separation structure wrapped around an outer side of the battery, the separation structure including a first conductive layer and an insulating separation layer. The first conductive layer covers at least part of the bottom surface of the battery and at least part of the side surfaces of the battery. The insulating separation layer includes a separation main body portion and a pulling portion connected to the separation main body portion. A tear guide structure is provided between the separation main body portion and the pulling portion, the separation main body portion covers the first conductive layer and is connected to the first conductive layer, and the pulling portion is bonded to the top surface of the battery. The pulling portion is configured such that, when a pulling force is applied to the pulling portion, the pulling portion is separated from the top surface of the battery, and the first conductive layer on the side surfaces of the battery is exposed at the battery. At least part of the insulating separation layer is formed of a conductive release adhesive. The technical solution provided in the present application can effectively solve the problem in the related art of the battery being difficult to remove from

ELECTROLYTE INJECTION SYSTEM AND ELECTROLYTE INJECTION METHOD

Resumen de: EP4794112A1

0001 An electrolyte injection system (100) and an electrolyte injection method. The electrolyte injection system (100) comprises an electrolyte injection device (110), an upper computer (120), and a control device (130). The electrolyte injection device (110) is used for injecting an electrolyte into a battery cell in a battery cell electrolyte injection process. The upper computer (120) is used for: acquiring electrolyte injection data of the battery cell after battery cell electrolyte injection is completed, and locally recording the electrolyte injection data of the battery cell as historical electrolyte injection data; determining a first battery cell set placed in a battery cell tray that currently enters the electrolyte injection device (110); on the basis of the local historical electrolyte injection data, determining from among the first battery cell set a second battery cell set, electrolyte injection of which has not been completed; determining from among the second battery cell set a target battery cell set to be subjected to electrolyte injection; and sending to the control device (130) the position of each target battery cell in the target battery cell set in the battery cell tray. The control device (130) is used for controlling the electrolyte injection device (110) to perform electrolyte injection on the target battery cell set on the basis of the position corresponding to each target battery cell.

DIE-CUTTING METHOD AND DIE-CUTTING MACHINE

Resumen de: EP4792950A1

0001 A die-cutting machine (10), comprising an unwinding mechanism (11), a cutting mechanism (12), a visual detection system (13) and a winding mechanism (14), which are sequentially arranged in a conveying direction of an electrode sheet, wherein the visual detection system is used for collecting an image of the current electrode sheet that has been cut, and the cutting mechanism is used for cutting the next electrode sheet in a first marking mode when a detection result of the current electrode sheet indicates that the current electrode sheet has a defect, the detection result of the current electrode sheet is determined on the basis of the image of the current electrode sheet, a cutting position corresponding to the next electrode sheet is used as an end position of the current battery electrode sheet section and a starting position of the next battery electrode sheet section, and the length between the starting position of the next battery electrode sheet section and a starting position of the current battery electrode sheet section is less than the length of one battery electrode sheet section. Further provided is a die-cutting method. The die-cutting machine shortens the length of an electrode sheet that does not meet standards, reduces the possibility of electrode sheet waste, and achieves the aim of saving on electrode sheets, thereby reducing the manufacturing cost of batteries, and improving the productivity of the device.

BATTERY PACK HAVING CUT-OFF PROTECTION FUNCTION, AND ENERGY STORAGE SYSTEM

Resumen de: EP4794052A1

This application provides a battery pack with a breaking protection function and an energy storage system. The battery pack includes a battery module including a plurality of single cells, a breaking device connected in series to the battery module, a current sensor, and a controller. A first end of the current sensor is connected to a positive output end of the battery pack, and a second end of the current sensor is connected to a negative output end of the battery pack, to detect a current difference between the positive output end and the negative output end of the battery pack. The controller is configured to: when the current difference detected by the current sensor is greater than a first threshold, control the breaking device to be turned off, to quickly cut off a fault when the short-circuit to ground fault occurs in the cell in the battery pack, so as to ensure safe operation of the entire energy storage system.

SECONDARY BATTERY AND ELECTROCHEMICAL DEVICE

Resumen de: EP4794041A1

0001 An embodiment of the present application provides a secondary battery and an electrochemical device. The secondary battery includes an electrode assembly, where the electrode assembly is a flat wound structure, the electrode assembly includes a first electrode sheet, a second electrode sheet, and a separator, the separator is disposed between the first electrode sheet and the second electrode sheet, and an innermost electrode sheet of the electrode assembly is the first electrode sheet; where a length of the electrode assembly is denoted as L, a width of the electrode assembly is denoted as W, a thickness of the electrode assembly is denoted as H, meeting 0.9 ≤ L/W ≤ 1.1 and H ≤ 3 mm, the electrode assembly further includes an adhesive layer, an innermost turn of the first electrode sheet includes a first straight segment, a first bent segment, a second straight segment, and a second bent segment connected sequentially, the first electrode sheet has a first surface facing a winding core of the electrode assembly, and at least a portion of the adhesive layer is disposed on the first surface of the first straight segment and/or the first surface of the second straight segment. The technical solution according to some embodiments of the present application can improve the safety performance and cycling performance of the secondary battery.

BATTERY PACK

Resumen de: EP4794089A1

0001 A battery pack (100) includes an elastic body (20) on a portion of each of the inner surfaces (12a) of a pair of lid parts (12). The pair of lid parts (12) are secured to the respective end surfaces of a battery block (2) housed in the housing space of a casing body (11). A gap (GP) is formed between each of the pair of lid parts (12) and an edge (11a) of a corresponding open end of the casing body (11). The lid part (12) includes: a lid body (13) that is a flat board; and a wall part (14) projecting from the inner surface of the lid body (13). The elastic body (20) is disposed to abut a surface of the wall part (14) that faces the inner surface of the casing body (44). The elastic body (20) includes an inclined surface (21) flaring out toward the inner surface of the lid part (12). A portion of the inclined surface (21) enters the gap (GP). A corner portion (19) of the casing body (11) that is located between an edge (11a) of the open end of the casing body (11) and the inner surface (11b) of the casing body (44) abuts the inclined surface (21).

METHOD FOR ASSEMBLING AN ELECTRIC BATTERY PACK

Resumen de: WO2025078700A1

The invention relates to a method for assembling an electric battery pack (1), comprising the following steps: - providing a rack (3) that defines a plurality of open recesses (5); - providing at least one set of cells (13) comprising a plurality of electrochemical cells (15) and a plurality of spacers (17) separating the electrochemical cells (15) from one another; and - inserting the at least one set of cells (13) into one of the recesses (5); characterised in that compressible spacers (17) are provided, and in that the at least one set of cells (13) is compressed in order to be able to insert the at least one compressed assembly (13) into one of the recesses (5), so that the at least one compressed assembly (13) remains compressed.

APPARATUS FOR FIRING CATHODE MATERIAL OF SECONDARY BATTERY

Resumen de: EP4793582A1

An apparatus for calcining a positive electrode material of a secondary battery comprises a temperature rising section extending in a first direction of a horizontal direction, a temperature maintaining section connected to the temperature rising section and extending in the first direction, and a cooling section connected to the temperature maintaining section and extending in a second direction different from the first direction in the horizontal direction.

BATTERY PACK, STRUCTURE, AND METHOD FOR MANUFACTURING MICA PLATE

Resumen de: EP4794086A1

0001 Provided is a battery pack including a mica plate that is resistant to damage and is lightweight. The battery pack of the present invention includes a module with a plurality of battery cells; a case containing the module; and a mica plate disposed between the module and the case and having a first main face and a second main face opposite to the first main face, the battery pack further including a fixing member to fix the mica plate, the mica plate having a first fixing member hole penetrating from the first main face to the second main face, at least one of the module or the case having a second fixing member hole, the fixing member including a head and a body extending from the head, the body of the fixing member passing through the first fixing member hole into the second fixing member hole, thereby fixing the mica plate, the head, in a planar perspective view of the mica plate, covering at least a part of an outline of the first fixing member hole and overlapping the mica plate, an overlapping area, denoted as area S1, between the head and the mica plate being not less than 5.8 × 10<-6> times an area S2 of the mica plate.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794111A1

0001 A battery (100) and an electric device. The battery (100) comprises: a battery pack (10), comprising a first battery column (11) and a second battery column (12), which are arranged in a first direction (X), wherein the first battery column (11) and the second battery column (12) each comprise a plurality of battery cells (200) sequentially arranged in a second direction (Y), the first direction (X) intersecting the second direction (Y); a busbar assembly (20), comprising a first busbar member (21) and a second busbar member (22), wherein the first busbar member (21) is connected to the battery cells (200) of the first battery column (11), and the second busbar member (22) is connected to the battery cells (200) of the second battery column (12); and a separator (30), wherein in the first direction (X), at least part of the separator (30) is located between the first busbar member (21) and the second busbar member (22). The battery can improve its own reliability, thus reducing the risk of short circuits.

EXPLOSION-PROOF VALVE PATCH, COVER PLATE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794091A1

The embodiments of the present disclosure belong to the technical field of batteries. Provided are an explosion-proof valve patch, a cover plate assembly, a battery cell, a battery and an electric device. The explosion-proof valve patch comprises a patch body; a first rubber ring arranged on a first surface of the patch body and provided with a first gap; and a second rubber ring arranged on the first surface of the patch body, located on an inner side of the first rubber ring, and provided with a second gap, the first gap and the second gap being staggered.

SEPARATOR AND ELECTROCHEMICAL DEVICE

Resumen de: EP4794045A1

Provided are a separator (100) and an electrochemical device. The separator (100) includes a porous base film (101) and a heat resistant layer (102). The heat resistant layer (102) is disposed on at least one surface of the porous base film (101), and includes inorganic particles and an adhesive agent. A surface static friction coefficient of the heat resistant layer (102) is ≤0.8, and a bulk density A of the heat resistant layer (102) satisfies: A=(0.4 to 0.5)×ρ. A heat resistant layer (102) with dense stacking and flat surface is obtained by controlling the static friction coefficient and bulk density of the heat resistant layer (102), which may increase an effective contact area between the adhesive particles in the heat resistant layer (102) and the electrode sheet, thereby increasing the adhesive force between the separator (100) as a whole and the electrode sheet.

SEPARATOR AND ELECTROCHEMICAL DEVICE

Resumen de: EP4794101A1

Disclosed are a separator (100) and an electrochemical device, specifically relating to the battery technology field. The separator (100) includes a porous base film (101), a heat-resistant layer (102) and an adhesive layer (103), wherein the heat-resistant layer (102) is disposed on at least one surface of the porous base film (101). The adhesive layer (103) is at least disposed on a surface of the heat-resistant layer (102) opposite to a surface in contact with the porous base film (101). An effective adhesion degree R-value of the separator (100) on a side where the heat-resistant layer (102) is provided is 40%-80%, and a difference between a maximum value and a minimum value of the effective adhesion degree R-value is <30%; wherein the effective adhesion degree R-value indicates a ratio of an effective adhesion area to a theoretical adhesion area of the separator (100).

ENERGY STORAGE ELEMENT

Resumen de: WO2025078530A1

The invention relates to an energy storage element (100) comprising an electrode-separator assembly (104) of strip-shaped electrodes and at least one band-shaped separator, having the sequence anode (105)/separator (156)/cathode (108), which is in the form of a cylindrical winding in which the anode (105), the separator (156) and the cathode (108) are wound around a winding axis A. The anode (105) and the cathode (106) each comprise a current collector (106, 109) with a strip-shaped main region (107, 110) covered with electrode material and a free edge strip (106b, 109b) along a longitudinal edge (106a, 109b) which is not covered with the electrode material. They are arranged inside the electrode-separator assembly (104) such that the free edge strip (106b) of the anode current collector (106) emerges from a first terminal end face (104a) and the free edge strip (109b) of the cathode current collector (109) emerges from a second terminal end face (104b) of the winding. A sheet-metal contact part (112) sits on one of the edge strips (106b, 109b), covers the end face (104a, 104b) from which this edge strip emerges, and is integrally connected to this edge strip. The current collector, on the edge strips (106b, 109b) of which the sheet-metal contact part (112) sits, is arranged in a spiral shape in the cylindrical winding and has an outer turn (181) with a maximum radius R1. The sheet-metal contact part (112) has a maximum radial extension Emax on the end face (104a, 104b) cover

PRODUCTION OF BATTERY CELLS BY MEANS OF ARRESTER EXTENSIONS

Resumen de: WO2025078684A1

The invention relates to a method for producing a battery cell, having at least two battery poles arranged on opposite sides, wherein at least one electrode stack having a multiplicity of anode foils and cathode foils, which are separated from one another by separator foils, is provided, wherein the anode foils have anode arresters at their ends and the cathode foils have cathode arresters at their ends, wherein the anode arresters of the anode foils are bundled at a first side and the cathode arresters of the cathode foils are bundled at a second side of the electrode stack, the bundled anode arresters and/or cathode arresters are connected in an electrically conductive manner at least regionally by means of at least one arrester extension, the at least one electrode stack provided with at least one arrester extension is inserted into a cell housing, the anode arresters are connected directly or indirectly to a collector of a first battery pole in an electrically conductive manner via the at least one arrester extension and the cathode arresters are connected directly or indirectly to a collector of a second battery pole in an electrically conductive manner via the at least one arrester extension, and wherein the cell housing is closed by the first battery pole and the second battery pole. The invention also relates to a battery cell.

A METHOD OF MANUFACTURING POROUS SILICON

Resumen de: CN122003383A

A method of making porous silicon includes providing magnesium silicide with silica nanoparticles and silica microparticles, or by providing magnesium with silica nanoparticles and silica microparticles. Any of the mixtures is then heated to a maximum of 500 DEG C.

ELECTROLYTE SUITABLE FOR SODIUM ION BATTERY AND SODIUM ION BATTERY

Resumen de: EP4794047A1

The present invention relates to an electrolyte suitable for sodium-ion batteries and a sodium-ion battery. To solve the problem of poor room-temperature cycling performance, rate performance, and high-low temperature performance of sodium-ion batteries, the present invention provides an electrolyte suitable for sodium-ion batteries, comprising an electrolyte salt, an organic solvent, and an additive, wherein the organic solvent comprises a carbonate solvent, a fluorinated carboxylate solvent and a fluorinated benzene solvent, and the carbonate solvent does not include ethylene carbonate. The present invention improves the room-temperature cycling performance, rate performance, and high/low temperature performance of sodium-ion batteries through the synergistic cooperation of the carbonate solvent, the fluorinated carboxylate solvent, and the fluorinated benzene solvent.

CASING, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794080A1

0001 A casing, a battery and an electric device, which relate to the technical field of batteries. The casing comprises a casing wall (1), load-bearing members (3) and connecting members (4), wherein an accommodating cavity (2) is formed by the casing wall (1) by means of enclosure, and is provided with first connecting holes (111); the first connecting holes (111) penetrate the casing wall (1) in the direction of thickness of the casing wall (1); the load-bearing members (3) are provided in the accommodating cavity (2); the connecting members (4) extend into the accommodating cavity (2) by means of the first connecting holes (111) so as to be detachably connected to the load-bearing members (3) to fix the casing wall (1) and the load-bearing members (3); and a connecting structure is provided on the side of each connecting member (4) facing the outside of the accommodating cavity (2), and is configured to be connected to a target device.

ENERGY STORAGE SYSTEM AND CONTROL METHOD FOR ENERGY STORAGE SYSTEM

Resumen de: EP4794156A1

The present application provides an energy storage system and a control method for the energy storage system, applied to the technical field of energy storage. The energy storage system comprises a plurality of battery clusters and a plurality of control units, and the battery clusters are in one-to-one correspondence with the control units. Each control unit is used for: when a battery parameter is not lower than a first battery parameter, controlling the corresponding battery cluster to discharge at constant current; and when the battery parameter is lower than the first battery parameter, controlling the corresponding battery cluster to charge at constant current, wherein the first battery parameter is a battery parameter when the capacity of the battery cluster reaches a safe capacity lower limit. By controlling the battery clusters meeting conditions in the energy storage system to charge or discharge at the same constant current, the output power or input power of the energy storage system reaches the maximum power that the energy storage system can currently reach.

ANHYDROUS IRON PHOSPHATE AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, AND SECONDARY BATTERY

Resumen de: EP4793231A1

0001 Provided is an anhydrous ferric phosphate and a preparation method thereof, a cathode electrode material and a preparation method thereof, a cathode electrode sheet, and a secondary battery, belonging to the field of a secondary battery. In terms of weight percentage, a quantity proportion of particles with a particle size greater than or equal to 0.01 µm and less than 0.1 µm in primary particles of the anhydrous ferric phosphate is 10%-30%, a quantity proportion of particles with a particle size of 0.1 µm-0.2 µm is 50%-60%, a quantity proportion of particles with a particle size greater than 0.2 µm and less than 0.4 µm is 15%-30%, and a quantity proportion of particles with a particle size of 0.4 µm-0.6 µm is 0.2%-10%. The present disclosure is beneficial for obtaining a well-dispersed anhydrous ferric phosphate by controlling particle gradation, which serves as a basis for preparing a highly compacted cathode electrode material and is advantageous for obtaining a cathode electrode material with high compact density, good rate performance, and high charging and discharging efficiency.

SUPPORTING SYSTEM FOR SUPPORTING A BATTERY ELONGATED STRUCTURE

Nº publicación: EP4791623A1 19/08/2026

Solicitante:

TRATON AB [SE]
Traton AB

Resumen de: SE2351182A1

SUMMARYA supportive system (140) is described, for supporting an elongated structure (130). The system comprises a first holding element (201) and a second holding element (202). The first element (201) features a receiving section (211) and a locking section (212) with a locking member (220), mating depression (221), and a groove (240) spanning both sections. This groove (240) has distinct profiles in the two sections. The second element (202) has a rim (250) and a beam (230) with a cantilevered hook (231). The rim (250) fits into the groove (240) and the hook (231) into the depression (221) of the first element (201). Together, they embrace the structure (130). The second element (202) slides from the receiving to the locking section, with the rim (250) and hook (231) aligning with the corresponding features of the first element (201).