Alerta

POLYIMIDE, COMPOSITION, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY

Resumen de: WO2025205134A1

This polyimide is a product of a reaction between a diamine compound represented by general formula (1) and an acid anhydride represented by general formula (2).

SOLID ELECTROLYTE AND BATTERY

Resumen de: WO2025203536A1

Disclosed is a solid electrolyte that exhibits high ion conductivity and that can be provided at an inexpensive process cost. The solid electrolyte comprises: at least one inorganic compound selected from the group consisting of metal oxides, metal hydrogen compounds, and metal hydroxides; residual solvent; and a salt containing an alkali metal or an alkaline earth metal. The x-ray diffraction pattern of the inorganic compound has at least one peak having a full width at half maximum of no greater than 0.80°.

BOTTOM PROTECTIVE PLATE AND BATTERY CASE

Resumen de: WO2025200292A1

A bottom protective plate and a battery case. The bottom protective plate comprises an upper skin (10), a lower skin (20), and an interlayer (30). The lower skin (20) and the upper skin (10) are spaced apart. The interlayer (30) is sandwiched between the upper skin (10) and the lower skin (20). The thickness of the upper skin (10) is greater than the thickness of the lower skin (20).

BATTERY PACK

Resumen de: WO2025206648A1

According to exemplary embodiments, a battery pack is provided. The battery pack comprises: a pack housing including a base plate and a sidewall perpendicular to the base plate; a plurality of battery cell assemblies which are arranged on the base plate and each of which includes a plurality of battery cells and an integrated circuit assembly configured to be electrically connected to the plurality of battery cells; a communication device configured to communicate with an antenna of the integrated circuit assembly of each of the plurality of battery cell assemblies; and a battery management system (BMS) configured to communicate with the communication device.

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

METHOD OF MANUFACTURING BATTERY MODULE

Resumen de: WO2025203705A1

Provided is a method of manufacturing a battery module provided with a laminate having a plurality of stacked units that include: a first cell group and second cell group in which a plurality of cells extending in a first direction are lined up in a second direction orthogonal to the first direction; and a thermal regulation plate which is arranged between the first cell group and the second cell group and extends in the second direction. The method comprises: coating either the thermal regulation plate or the first cell group and second cell group with an adhesive; and bringing the thermal regulation plate and the first cell group and second cell group into contact, thereby adhering the thermal regulation plate and the first cell group and second cell group to each other.

COMPOSITE MATERIAL

Resumen de: WO2025206827A1

Disclosed in the present specification are a composite material and a fire suppression device, which can be applied to a product or element in an abnormal state or having the potential to enter an abnormal state, enabling effective response to the abnormal state. For example, the composite material and the like may be applied to an article comprising a plurality of such products or elements, to respond to abnormal heat generation, explosion, or ignition occurring in any one of the products or elements, and prevent or minimize the propagation of such heat generation, explosion, or ignition to adjacent products or elements. The composite material and the like also exhibit excellent handling characteristics and storage stability. The present specification may also provide uses of the composite material and the like.

LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY MODULE

Resumen de: WO2025205497A1

A lithium ion secondary battery (10) provided with a positive electrode that includes a positive electrode active material layer (1), a negative electrode that includes a negative electrode active material layer (2), and an electrolyte, wherein: the negative electrode active material included in the negative electrode active material layer (2) has an SEI film on at least a portion of the surface thereof; the electrolyte contains lithium bis(fluorosulfonyl)imide; and the lithium bis(fluorosulfonyl)imide concentration in the electrolyte determined using a prescribed method is at least 0.6 mass%.

HEAT TRANSFER SUPPRESSION SHEET AND BATTERY PACK

Resumen de: WO2025204307A1

Provided is a heat transfer suppression sheet which has excellent heat insulation properties, can absorb pressing force even when the pressing force is applied to the heat transfer suppression sheet, and thereby being able to suppress powder drop and maintain the excellent heat insulation properties, and also provided is a battery pack having the heat transfer suppression sheet. A heat transfer suppression sheet (10) contains heat insulating particles (5) and organic fibers (3). The heat-insulating particles (5) include large-diameter inorganic particles (1) having an average primary particle diameter of 0.1 μm or more and silica nanoparticles (2). One part of the principal surface (10a) of the heat transfer suppression sheet (10) orthogonal to the thickness direction has a first region (11) in which the large-diameter inorganic particles (1) are eccentrically located, and the other part of the principal surface (10a) has a second region (12) in which the large-diameter inorganic particles (1), the silica nanoparticles (2), and the organic fibers (3) are dispersed.

POSITIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, LITHIUM-ION SECONDARY BATTERY, AND LITHIUM-ION SECONDARY BATTERY MODULE

Resumen de: WO2025205475A1

Provided is a positive electrode for a lithium-ion secondary battery including a positive electrode active material layer. The positive electrode active material contained in the positive electrode active material layer contains active material particles composed of a composite oxide (X) having a lamellar rock-salt-type crystal structure. When the value of an average particle diameter d50 in the volume-based particle size distribution of the active material particles according to a laser diffraction/scattering type particle size distribution measurement method is D1 μm, and a projected area-equivalent circle diameter (Heywood diameter) calculated from a SEM image obtained when the active material particles are observed with an electron microscope under the following conditions is D2 μm, the number of the active material particles satisfying D2 ≤ 0.5 × D1 is 10 or fewer. (Conditions) Field of view: 60 μm × 60 μm; imaging magnification: ×1000

METHOD AND SYSTEM FOR PROCESSING WASTE LITHIUM ION BATTERY

Resumen de: WO2025204167A1

This method for processing a waste lithium ion battery for recovering lithium from a waste lithium ion battery that contains fluorine includes: introducing a roasted material that is obtained by roasting the waste lithium ion battery into a first dissolution tank so as to immerse the roasted material in water; performing first solid-liquid separation on the aqueous solution after immersion in the first dissolution tank; recovering the lithium from the aqueous solution that is separated by the first solid-liquid separation; introducing the residue after immersion in the first dissolution tank into a second dissolution tank, which is different from the first dissolution tank, so as to immerse the residue in water; adding calcium hydroxide to water in the second dissolution tank; performing second solid-liquid separation on the aqueous solution after immersion in the second dissolution tank; and separating excess calcium, which is derived from calcium hydroxide, and lithium from the aqueous solution that is separated by the second solid-liquid separation.

SILICON-BASED ANODE MATERIAL AND SECONDARY BATTERY COMPRISING SAME

Resumen de: WO2025206809A1

The present invention relates to a silicon-carbon composite, and an anode active material for a secondary battery, comprising same. More specifically, the present invention relates to a silicon-carbon composite, and an anode active material for a secondary battery, comprising same, the silicon-carbon composite, in which the size of a silicon cluster is controlled by carbon atoms, being used as an anode active material for a secondary battery so as to minimize a change in volume of the anode active material and inhibit side reactions, thereby enabling the lifespan of a secondary battery to be improved.

METHOD FOR MANUFACTURING BATTERY MODULE

Resumen de: WO2025203690A1

Provided is a method for manufacturing a battery module provided with a laminate in which a plurality of units are laminated, the units each including a first cell group and a second cell group in which a plurality of cells extending in a first direction are disposed in a second direction orthogonal to the first direction, and a temperature control plate that is disposed between the first cell group and the second cell group and extends in the second direction, the method comprising laminating the plurality of units to form the laminate, and positioning the positional relationship between the units in the laminate by using a pair of plates sandwiching the laminate from both lamination-direction sides.

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.

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.

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.

BIPOLAR CURRENT COLLECTOR, BIPOLAR ELECTRODE SHEET, ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

Resumen de: WO2025199951A1

A bipolar current collector, a bipolar electrode sheet, an electrochemical device and an electronic device. The bipolar current collector comprises a negative electrode current collector and a positive electrode current collector. The negative electrode current collector comprises a first polymer layer and a first metal layer, wherein the first metal layer is arranged on a surface of the side of the first polymer layer in the direction of thickness, and is a copper layer. The positive electrode current collector comprises a second polymer layer and a second metal layer, wherein the second metal layer is arranged on a surface of the side of the second polymer layer in the direction of thickness, and is an aluminum layer. In the direction of thickness of the bipolar current collector, the first metal layer, the first polymer layer, the second polymer layer, and the second metal layer are arranged in sequence, the first polymer layer being connected to the second polymer layer. The copper layer has a thickness of A μm, and the aluminum layer has a thickness of B μm, where A and B satisfy: 0.8≤A≤3.0 and 1.2≤B/A≤3.5. When applied in an electrochemical device, the bipolar current collector helps improve the energy density and cycling performance of the electrochemical device.

COMPOSITE MATERIAL

Resumen de: WO2025206831A1

Disclosed in the present specification are a composite material and a fire extinguishing device, which are applied to a product or a device that is in an abnormal state or is likely to be in an abnormal state so as to effectively respond to the abnormal state. For example, the composite material may be applied to an article that includes a plurality of such products or devices, and may respond to abnormal heat generation, explosion, or ignition occurring in any one of the products or devices, while preventing or minimizing the propagation of such heat, explosion, or ignition to adjacent products or devices. The composite material or the like also exhibits excellent handling and storage stability. The present specification can also provide uses of the composite material, and the like.

CYLINDER TYPE RECHARGEABLE BATTERY

Resumen de: WO2025206616A1

A cylinder-type rechargeable battery of the present invention comprises: an electrode assembly; a case including a body part and a recess part which is recessed toward the inside of the body part and of which a part is flat, and accommodating the electrode assembly; and a negative electrode current collecting plate including a base part having a portion connected to the electrode assembly and a contact part extending from an edge of the base part toward the recess part and contacting a portion formed of a flat surface in the inner surface of the case, and electrically connected to the electrode assembly.

FIRE EXTINGUISHING DEVICE

Resumen de: WO2025206829A1

The present specification discloses a fire extinguishing device which can be applied to products or elements that generate heat or have the probability of igniting or exploding during operation, storage, and/or maintenance, and effectively counteract the heat, ignition, and explosion. For example, the fire extinguishing device can be applied to an article comprising a plurality of the products or elements, and deals with abnormal heat generation, explosion, and ignition occurring in one of the elements or products and prevents or minimizes the spread of such heat, explosion, and ignition to other adjacent elements or products. The fire extinguishing device and the like also exhibits excellent handling and storage stability. The present specification may also provide a use of the fire extinguishing device and the like.

SOLID ELECTROLYTE AND SECONDARY BATTERY

Nº publicación: WO2025204764A1 02/10/2025

Solicitante:

MURATA MFG CO LTD [JP]
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