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METHOD FOR PRODUCING RECYCLED POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: WO2025204684A1

Provided is a method for producing a recycled positive electrode active material including the following steps.　Step (1): a step for obtaining a mixture by mixing a positive electrode mixture containing a positive electrode active material and an activation treatment agent containing one or more alkali metal compounds; step (2): a step for heating the mixture to a temperature equal to or higher than the melting start temperature of the activation treatment agent in the presence of oxygen having a flow rate equal to or higher than 0.020 L/min per 1 L heating space to obtain a heated mixture; and step (3): a step for recovering the heated positive electrode active material from the heated mixture.

COVER PLATE ASSEMBLY FOR BATTERY CELL, BATTERY CELL, BATTERY ASSEMBLY, AND ELECTRIC DEVICE

Resumen de: WO2025200424A1

A cover plate assembly (200) for a battery cell (1000), a battery cell (1000), a battery assembly (10), and an electric device (1). The cover plate assembly (200) for the battery cell (1000) comprises a cover plate body (210), a terminal post (250), an insulating member (400), and a buffer member (500); a mounting opening (212) is formed on the cover plate body (210); the terminal post (250) passes through the mounting opening (212); the insulating member (400) is arranged at the mounting opening (212) and is located between the terminal post (250) and the cover plate body (210) so that the cover plate body (210) and the terminal post (250) are insulated and spaced; the terminal post (250) is provided with a first limiting portion (251) located on one side of the cover plate body (210); the first limiting portion (251) is used for limiting and fixing the terminal post (250) and the insulating member (400) relative to the cover plate body (210); and the buffer member (500) is arranged between the insulating member (400) and the first limiting portion (251). The cover plate assembly (200) for the battery cell (1000) can, to a certain extent, prevent the first limiting portion (251) from directly pressing the insulating member (400) during a molding process, and distribute and buffer the pressing force exerted by the first limiting portion (251) on the insulating member (400), thereby preventing the insulating member (400) from being cracked, ensuring the working performance of

MODIFIED NEGATIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: WO2025200286A1

A modified negative electrode sheet and a preparation method therefor, a secondary battery and an electric device. The modified negative electrode sheet comprises a negative electrode current collector, a negative electrode active material layer located on at least one side of the negative electrode current collector, and an artificial SEI film located on the side of the negative electrode active material layer away from the negative electrode current collector, wherein the artificial SEI film comprises one or more of a first component and a second component; the first component comprises one or more of an unsaturated fatty acid containing a carbon-carbon double bond and a hydrazide substance, raw materials for preparing which comprise the unsaturated fatty acid; and the second component comprises a lithium salt. By forming a stable artificial SEI film containing the first component and/or the second component on the surface of the negative electrode active material layer, the artificial SEI film can slow down the growth of an SEI film on a negative electrode, thereby slowing down storage degradation and prolonging storage life.

METHOD FOR MANUFACTURING BATTERY MODULE

Resumen de: WO2025203706A1

The present invention provides a method for manufacturing a battery module, the battery module comprising a laminate formed from a stacked plurality of units, each unit including: first and second cell groups in which a plurality of cells extending in a first direction are arranged in a second direction orthogonal to the first direction; and a temperature regulation plate which is disposed between the first cell group and the second cell group and which extends in the second direction. The method comprises: applying an adhesive to the first cell group and/or the second cell group; and bonding the first cell group and/or the second cell group to the temperature regulation plate by bringing the temperature control plate into contact with the first cell group and/or the second cell group to which the adhesive has been applied, wherein the applying of the adhesive to the first cell group and/or the second cell group includes applying the adhesive to a portion excluding at least one of the two ends of each of the plurality of cells in the first cell group and/or the second cell group.

METHOD FOR PRODUCING RECYCLED POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: WO2025204670A1

According to the present invention, a method for producing a recycled positive electrode active material includes the following steps. (1) A step of mixing a positive electrode mix containing a positive electrode active material and a carbon-containing material with an activation treatment agent containing one or more alkali metal compounds to obtain a mixture; (2) a step of carrying the mixture into a continuous furnace and heating the mixture by supplying air in a direction opposite to the advancing direction of the mixture to obtain a heated mixture; and (3) a step of recovering the heated positive electrode active material from the heated mixture.

METHOD FOR PRODUCING RECYCLED POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: WO2025204673A1

Provided is a method for producing a recycled positive electrode active material including the following steps.　Step (1): a step for obtaining a mixture by mixing a positive electrode mixture containing a positive electrode active material and an activation treatment agent containing one or more alkali metal compounds; step (2): a step for heating the mixture to a temperature equal to or higher than the melting start temperature of the activation treatment agent in the presence of nitrogen and of oxygen having a flow rate of more than 0 L/min and at most 0.600 L/min per 1 L heating space to obtain a heated mixture; and step (3): a step for recovering the heated positive electrode active material from the heated mixture.

BATTERY PACK AND VEHICLE COMPRISING SAME

Resumen de: WO2025206619A1

A battery pack according to one embodiment of the present invention comprises: at least one battery module including a plurality of battery cells; a base plate supporting the battery module from the bottom thereof; a pack housing which is coupled to the base plate and which covers a side portion of the battery module; a first heat sink which is positioned below the base plate and in which a first flow path through which a coolant flows is formed; and a second heat sink which covers the upper portion of the battery module and in which a second flow path through which the coolant flows is formed.

NEGATIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, AND SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: WO2025199676A1

A negative electrode sheet and a preparation method therefor, and a secondary battery and an electric device. The negative electrode sheet comprises a negative electrode current collector, a first active material layer and a second active material layer. In the direction of thickness of the negative electrode current collector, the negative electrode current collector has a first surface and a second surface opposite each other, the first active material layer being arranged on the first surface, and the second active material layer being arranged on the second surface. In the direction of length of the negative electrode sheet, one end of the first active material layer is a first end, and the second surface is provided with a first bare current collector area. When viewed in the direction of thickness of the negative electrode sheet, the projection of the first end at least partially overlaps the first bare current collector area. There is no active material layer at the first end corresponding to the second surface. Therefore, the overall thickness of the negative electrode sheet at the first end can be reduced, such that, during cold rolling of the negative electrode sheet, over-compression in the negative electrode sheet can be effectively reduced, thereby reducing damage and breakage to the negative electrode current collector.

SEPARATOR FOR ELECTROCHEMICAL ELEMENT, ELECTROCHEMICAL ELEMENT, AND METHOD FOR MANUFACTURING SAME

Resumen de: WO2025205218A1

Provided are: a separator for an electrochemical element, the separator being able to be bonded to an electrode without heating; an electrochemical element comprising the separator; and a method for manufacturing the electrochemical element.　This separator for an electrochemical element is characterized in that: the separator comprises a substrate layer that comprises a porous film and a bonding layer for bonding to an electrode of an electrochemical element; the bonding layer contains a particulate resin (A); the melting point of the resin (A) is in the range 75-140°C; and the basis weight of the resin (A) in the bonding layer is at least 0.05 g/m2. This electrochemical element is characterized in that: the electrochemical element comprises this separator for an electrochemical element; and at least one electrode, of a positive electrode and a negative electrode, is bonded to the separator by the bonding layer of the separator.

METHOD FOR MANUFACTURING QUASI-SOLID-STATE BATTERY

Resumen de: WO2025204772A1

This method for manufacturing a quasi-solid-state battery comprises: a step for mixing and consolidating an electrode material that contains an electrolytic solution, an electrode active material, and an electroconductive assistant; a step for supplying the consolidated electrode material to a gap between a blade and a support that is being transported; and a step for leveling the supplied electrode material using the blade to form an electrode layer, the consolidated electrode material having a saturation of 80% or greater.

ELECTROLYTE INJECTION DEVICE

Resumen de: WO2025200761A1

An electrolyte injection device (100), comprising: a sealing mechanism (10) which is provided with a sealing cavity (11) for accommodating a battery (200); an electrolyte injection mechanism (20) which is configured to temporarily store an electrolyte and be in communication with an electrolyte injection port of the battery (200) so as to inject the electrolyte into the battery (200) through the electrolyte injection port, wherein the electrolyte injection mechanism (20) is in communication with the sealing cavity (11), the sealing mechanism (10) is provided with a gas port in communication with the sealing cavity (11), and the gas port is configured to be in communication with a vacuum generation mechanism so as to extract gas from the sealing cavity (11), the electrolyte injection mechanism (20) and the battery (200), or to be in communication with a positive pressure generation mechanism so as to fill the sealing cavity (11), the electrolyte injection mechanism (20) and the battery (200) with high-pressure gas; and a vibration mechanism (30) which can be at least partially arranged in the electrolyte injection mechanism (20) and is configured to send ultrasonic waves to the electrolyte in the electrolyte injection mechanism (20), wherein the electrolyte vibrates under the action of the ultrasonic waves, and the electrolyte can propagate the ultrasonic waves into the battery (200). When the electrolyte is injected into the battery through the electrolyte injection mechanism

POWER STORAGE DEVICE

Resumen de: WO2025203585A1

This power storage device has one or more power storage units. The power storage units have a first cell group composed of a plurality of cylindrical cells, and a second cell group composed of a plurality of cylindrical cells. The power storage units have a cooling plate disposed between the first cell group and the second cell group, and comprising a first flow path and a second flow path that pass through in the longitudinal direction. The power storage units have a first end component provided at a first end section of the cooling plate, and comprising a cooling liquid inflow chamber communicating with the first flow path, and a cooling liquid outflow chamber communicating with the second flow path. The power storage units have a second end component provided at a second end section of the cooling plate, and comprising a connection chamber that communicates with both the first flow path and the second flow path.

POSITIVE ELECTRODE SHEET, SECONDARY BATTERY AND ELECTRONIC APPARATUS

Resumen de: WO2025201047A1

The present application provides a positive electrode sheet, a secondary battery and an electronic apparatus. The positive electrode sheet comprises a positive electrode current collector and a positive electrode material layer; in the width direction of the positive electrode sheet, the positive electrode current collector comprises a first edge and a second edge which are opposite to each other. From the first edge to the second edge, the positive electrode material layer successively comprises an edge region and a main body region, the width of the edge region being W1 mm, the thickness of the edge region being T1 μm, the width of the main body region being W2 mm, and the thickness of the main body region being T2 μm, wherein W1/W2≤8%, 90%≤T1/T2≤100%, 18≤T1≤300, and 20≤T2≤300. The positive electrode material layer comprises an organic silicon and polyether-modified ester polymer. The positive electrode sheet satisfies the described characteristics, thus ameliorating the processing problem of edge shrinkage or edge bulging of positive electrode sheets during a coating process.

BATTERIES, INCLUDING SODIUM-ION BATTERIES WITH CARBON NANOSTRUCTURE COMPOSITES, AND RELATED COMPOSITIONS, ARTICLES, AND METHODS

Resumen de: WO2025207107A1

Compositions, articles, and methods related to batteries (e.g., sodium-ion batteries) including carbon nanostructure (e.g., carbon nanotube) composites are generally described. In certain embodiments, a composite comprises: (i) an electrochemically active material comprising a bis-tetraamino-benzoquinone molecule and/or a dimer, tautomer, oligomer, polymer, and/or derivative thereof; and (ii) at least one carbon nanotube (CNT). In some embodiments, the composite may be suitable for use as an electrode and/or an electrode material in an electrochemical cell. In certain embodiments, the electrochemical cell is a battery (e.g., a rechargeable battery, such as a sodium-ion battery).

POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: WO2025205539A1

This positive electrode for a nonaqueous electrolyte secondary battery has: a positive electrode current collector; and a positive electrode mixture layer disposed on the surface of the positive electrode current collector. The positive electrode current collector is a metal foil containing Al. A positive electrode lead is connected to the positive electrode current collector in a positive electrode current collector exposed section where the positive electrode current collector is exposed. The surface of the positive electrode current collector has a first region, in which the positive electrode lead is connected to the positive electrode current collector, and a second region, in which the positive electrode mixture layer is disposed. In an X-ray diffraction measurement of the positive electrode current collector, a half-value width W1 of a peak near a diffraction angle of 45° by Al obtained from the first region and a half-value width W2 of a peak near a diffraction angle of 45° by Al obtained from the second region satisfy the relationship 0.3 ≤ W2 / W1 ≤ 5. An average aspect ratio A1 of the metal particles in the first region and an average aspect ratio A2 of the metal particles in the second region satisfy the relationship A2 / A1 > 1.0.

PARTICLE EMBEDDING DEVICE, PARTICLE EMBEDDING SYSTEM AND BATTERY PRODUCTION LINE

Resumen de: WO2025200287A1

The present application relates to a particle embedding device, a particle embedding system and a battery production line. The particle embedding device (100) comprises a film feeding mechanism (10), embedding mechanisms (20) and a feeding mechanism (30). The film feeding mechanism (10) is used for conveying a film to be treated (400); the embedding mechanisms (20) are rotatably arranged around a set axis, the set axis is perpendicular to the traveling direction of said film (400), and the surface of each embedding mechanism (20) is provided with suction portions (21) that can be arranged close to said film (400), and can also be arranged away from said film (400); the feeding mechanism (30) is communicated with the embedding mechanisms (20), and is used for providing objects to be embedded (40) to the suction portions (21); and when the suction portions (21) are close to said film (400), said objects (40) located at the suction portions (21) can be embedded into said film (400). When said film (400) passes through the embedding mechanisms (20) during traveling, said objects (40) can be embedded into the surface of said film (400), so that the properties of said film (400) are changed. The strength, the elastic modulus, the surface roughness and other properties of the treated film (400) are improved, and therefore the strength, the elastic modulus, the surface roughness and other properties of a finally obtained composite current collector are also improved.

PRODUCTION METHOD FOR RECYCLED POSITIVE ELECTRODE ACTIVE MATERIAL

Resumen de: WO2025204674A1

This production method for a recycled positive electrode active material includes the following steps: (1) a step in which a positive electrode mixture containing a positive electrode active material and an activation treatment agent containing one or more alkali metal compounds are mixed to obtain a mixture; (2) a step in which the mixture is heated at a temperature T °C and a heated mixture is obtained; and (3) a step in which the heated mixture is heated at a temperature (1.6×T) °C or higher and the heated positive electrode active material is recovered.

TERMINAL ASSEMBLY OF BATTERY CELL, BATTERY CELL, BATTERY ASSEMBLY, AND ELECTRICAL APPARATUS

Resumen de: WO2025200709A1

Disclosed in the present application are a terminal assembly of a battery cell, a battery cell, a battery assembly and an electrical apparatus. The terminal assembly comprises a terminal and a seal cap, a liquid injection channel being provided in the terminal, and the seal cap comprising a body portion and a connection protrusion; the body portion is in a welded fitting to the terminal so as to block the liquid injection channel, a welding seam being formed at a joint of the body portion and the terminal; the connection protrusion is arranged on the first end surface of the body portion facing away from the liquid injection channel in the thickness direction, and the connection protrusion is suitable for being connected to a busbar; the connection protrusion protrudes from the body portion so as to form a step for accommodating the welding seam, such that the connection protrusion protrudes by a height greater than or equal to the maximum height of the welding seam protruding from the first end surface.

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2025200846A1

Provided in the present application are a secondary battery and an electronic device. The secondary battery comprises an electrode assembly, wherein the electrode assembly comprises a negative electrode sheet, a positive electrode sheet and a separator; the negative electrode sheet comprises a negative electrode current collector and a negative electrode material layer arranged on at least one surface of the negative electrode current collector; the negative electrode material layer comprises a silicon-carbon material; the silicon-carbon material comprises a substrate, a silicon coating layer and a carbon coating layer; the substrate comprises porous carbon and nano-silicon particles; the pores of the porous carbon contain the nano-silicon particles; and the silicon coating layer is arranged between the substrate and the carbon coating layer. Having the above characteristics, the silicon-carbon material can improve the dynamic performance and cycle performance of the secondary battery, and also enables the secondary battery to have a relatively high energy density.

CATHODE ACTIVE MATERIAL, CATHODE COMPRISING SAME, AND LITHIUM SECONDARY BATTERY

Resumen de: WO2025206618A1

The present invention relates to a cathode active material capable of improving the performance of a lithium secondary battery and, to a cathode active material, a cathode comprising same, and a lithium secondary battery, the material comprising an olivine-structured lithium iron phosphate-based compound and a coating part, which comprises carbon (C) and is formed on the lithium iron phosphate-based compound, having a degree of graphitization of 1.00-1.50 according to relation 1 described in the present specification, and having a Dip(χ) of 0.160-0.185 according to relation 2 described in the present specification.

METHOD FOR PRODUCING BATTERY MODULE, AND JIG

Resumen de: WO2025203664A1

Provided is a method for producing a battery module provided with a laminate having laminated therein a plurality of units each containing a first cell group and a second cell group which each have a plurality of cells that extend in a first direction and that are arranged side by side in a second direction orthogonal to the first direction and a temperature control plate which is disposed between the first cell group and the second cell group and which extends in the second direction, said method comprising preparing a plurality of jigs and forming a laminate by using the plurality of jigs to laminate the plurality of units. The jigs each comprise a first pin group and a second pin group each having a plurality of pins that are arranged side by side so as to be spaced in one direction. The first pin group and the second pin group are disposed so as to be parallel to each other and have a space therebetween, and the positions of the pins of the first pin group in the side-by-side arrangement direction of the pins are displaced from those of the second pin group. The formation of the laminate includes laminating the plurality of units such that the jigs and the units are arranged alternatingly in the lamination direction of the laminate and a unit is sandwiched between the first pin group of one of the two jigs that have the unit sandwiched therebetween and the second pin group of the other.

SECONDARY BATTERY AND PREPARATION METHOD THEREFOR, AND ELECTRONIC DEVICE

Resumen de: WO2025199684A1

The present application provides a secondary battery and a preparation method therefor, and an electronic device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, an electrolyte, and a separator, wherein the negative electrode sheet includes a negative electrode current collector and a negative electrode material layer, which is arranged on at least one surface of the negative electrode current collector, the negative electrode material layer comprising a silicon-carbon compound. The silicon-carbon compound has a spheroidization degree of 0.71-1, the silicon-carbon compound comprises silicon, carbon and oxygen, the mass percentage content of oxygen in the silicon-carbon compound is x1, and after being pressed at 200 MPa, the mass percentage content of oxygen in the silicon-carbon compound is x2, wherein (x2-x1)/x1×100%≤300%. The secondary battery provided in the present application has a high initial discharge capacity, a high initial coulombic efficiency, and a low thickness swelling rate.

LEAD-ACID BATTERY

Resumen de: WO2025205913A1

The present invention addresses the problem in which when a lead-acid battery is used in a low temperature region, said lead-acid battery having a plurality of cell chambers arranged along the lamination direction of laminates constituting electrode plate groups housed in the cell chambers, the negative electrode plates constituting the electrode plate groups stored in the cell chambers at both ends in the lamination direction are more easily affected by low temperatures than the negative electrode plates constituting the electrode plate groups stored in the cell chambers other than the cell chambers at both ends in the lamination direction, and thus high rate electrical discharge performance of the lead-acid battery itself may become insufficient.　The present invention is characterized in that the BET specific surface area X of the negative electrode plates of the laminates constituting the electrode plate groups housed in the cell chambers at both ends in the lamination direction is 1.00 m2/g or less, the BET specific surface area Y of the negative electrode plates constituting the electrode plate groups housed in the cell chambers other than the cell chambers at both ends in the lamination direction is at least 0.50 m2/g and less than 1.00 m2/g, and the ratio of X/Y is more than 1.00 and at most 1.60.

NEGATIVE ELECTRODE FOR SECONDARY BATTERY, AND SECONDARY BATTERY

Resumen de: WO2025204865A1

A negative electrode (12) for a secondary battery comprises: a long negative electrode core body (30); and a negative electrode mixture layer (32) disposed on the negative electrode core body (30). A region extending from one end to the other end of the negative electrode mixture layer (32) in the longitudinal direction includes a first region (12a) and a second region (12b) having different negative electrode plate swelling rates. The first region (12a) has a smaller negative electrode plate charge swelling rate than the second region (12b). When the ratio (S1/S1+2) of the area (S1) of the first region (12a) to the total area (S1+2) of the first region (12a) and the second region (12b) is x and the ratio (E1/E2) of the negative electrode plate charge swelling rate (E1) of the first region (12a) to the negative electrode plate charge swelling rate (E2) of the second region (12b) is y, |f(x, y)|≤3 is satisfied for two-variable function f(x, y)=21.5x-5.59x2-2.00y+1.73y2-20.7xy-3.37 having x and y as variables.

BATTERY CELL, AND BATTERY PACK AND VEHICLE INCLUDING SAME

Nº publicación: WO2025206569A1 02/10/2025

Solicitante:

LG ENERGY SOLUTION LTD [KR]
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