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SECONDARY BATTERY

Resumen de: WO2025206058A1

This secondary battery comprises: an electrode group in which a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode are rolled; an electrolyte; an external canister in a closed-end cylindrical shape that accommodates the electrode group and the electrolyte; a sealing plate disposed at an opening section of the external canister with an insulating gasket interposed therebetween; a positive electrode lead that connects the positive electrode and the sealing plate; and a negative electrode lead that connects the negative electrode and an inner base surface of the external canister. The negative electrode includes a negative electrode collector and a negative electrode mixture layer that is supported on a surface of the negative electrode collector. At the outermost periphery of the negative electrode, the negative electrode mixture layer faces an inner surface of the external canister. The positive electrode lead is disposed within a region in which the radial distance of said lead from the rolling axis of the electrode group is less than 0.9R where R is the radius of the electrode group. When an external short circuit occurs, the amount of heat Q1 generated by the positive electrode lead and the amount of heat Q2 generated by the negative electrode lead satisfy the relationship Q2 < Q1.

ACTIVE MATERIAL LAYER, ELECTRODE, AND ALL-SOLID-STATE BATTERY

Resumen de: WO2025204721A1

This active material layer has an active material, a solid electrolyte, and an electroconductive assistant. The solid electrolyte is expressed by formula (1): LiaEbGcXd. The contact area S1 (m2/m3) between the active material and the solid electrolyte per unit volume satisfies the expression 365000 < S1 < 385000.

LITHIUM BATTERY NEGATIVE ELECTRODE AND PREPARATION METHOD THEREFOR, AND LITHIUM BATTERY

Resumen de: WO2025200585A1

A lithium battery negative electrode, which comprises a silicon-based/graphite composite electrode material and polyanthraquinonylimide lithium. By introducing the polyanthraquinonylimide lithium into the lithium battery negative electrode, additional active lithium ions can be provided for a battery system during cycling, and lithium loss caused by the formation of an SEI film on the surface of the negative electrode can be compensated, such that the initial coulombic efficiency of the battery is improved, and the release of the battery capacity is improved. Moreover, the polyanthraquinonylimide lithium itself has relatively good mechanical properties, solvent resistance, and relatively good elasticity and relatively high tensile strength, and thus can withstand the volume change of silicon-based particles during charge-discharge cycles, and prevent the silicon-based negative electrode from powdering, thereby improving the long cycling performance of the battery. In addition, the carbonyl group in the polyanthraquinonylimide lithium can provide additional capacity for the negative electrode during cycling.

LITHIUM REPLENISHING ADDITIVE AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SLURRY, AND BATTERY

Resumen de: WO2025200160A1

Disclosed in the present application are a lithium replenishing additive and a preparation method therefor, a positive electrode slurry and a battery. The lithium replenishing additive comprises: an inner core, the inner core satisfying the chemical formula LixM1yM21-yO6, wherein 6≤x≤8, 0

SECONDARY BATTERY

Resumen de: WO2025206446A1

The present disclosure relates to a secondary battery, and the technical problem to be solved is to provide a secondary battery allowing reduced welding resistance between electrode tabs and terminals and rapid heat dissipation when a plurality of electrode assemblies are being installed in a single case. To that end, provided is a secondary battery comprising: a plurality of electrode assemblies, each provided with a negative electrode plate having a uncoated negative electrode region and a positive electrode plate having a uncoated positive electrode region; a case for accommodating the electrode assemblies; a cap plate for covering the open entry of the case; negative electrode terminals, in equal numbers as the electrode assemblies, provided on the cap plate and electrically connected to the uncoated negative electrode regions; and positive electrode terminals provided on the side of the case opposite to the negative electrode terminals, and electrically connected to the uncoated positive electrode regions.

PREPARATION METHOD FOR SOLID-STATE ELECTROLYTE CONTAINING OXYGEN VACANCIES AND SOLID-STATE BATTERY

Resumen de: WO2025199961A1

A preparation method for a solid-state electrolyte containing oxygen vacancies, and a solid-state battery. The preparation method for a solid-state electrolyte containing oxygen vacancies comprises: mixing a carbon material and an oxide solid-state electrolyte to obtain a mixed material, and performing heat treatment on the mixed material to prepare a solid-state electrolyte containing oxygen vacancies. The carbon material and the oxide solid-state electrolyte are subjected to heat treatment to prepare the solid-state electrolyte containing oxygen vacancies. In the solvent-free preparation method for obtaining the solid-state electrolyte containing oxygen vacancies, the carbon material is converted into carbon dioxide in the heat treatment process, such that the solid-state electrolyte can give full play to the advantages of oxygen vacancies so as to improve the ionic conductivity of the solid-state electrolyte and minimize the negative effect of the heat treatment process on the performance of the solid-state electrolyte.

AN ELECTRODE, A JELLY ROLL AND PROCESSES THEREOF

Resumen de: WO2025203054A1

The present disclosure provides an electrode (100) comprising: a) an insulation material (101); b) a current collector (102); and c) an active material layer (103); wherein the current collector has a first portion and a second portion; wherein the first portion has an alternate coating of the insulation material (101) on top side (101a) and bottom side (101b) of the current collector; wherein length of each of the alternate coating of the insulation material is progressively increasing from one end (102a) to another end (102b) of the current collector; and wherein the second portion has a coating of the active material layer (103) on top side (103a) and bottom side (103b) of the current collector. The present disclosure also provides a process for preparation of the electrode, an electrochemical cell, a jelly roll, a battery, and use of the electrode (100).

COMPOSITE MATERIAL

Resumen de: WO2025206840A1

Disclosed in the present specification are a composite material and a fire extinguishing device, which are applied to products or elements that are in an abnormal state or potentially in an abnormal state so as to effectively respond to the abnormal state. For example, the composite material and the like may be applied to an item including a plurality of the products or elements, and may respond to abnormal heat generation, explosion, or ignition occurring in any one of the products or elements, and prevent or minimize propagation of such heat generation, explosion, or ignition to other adjacent products or elements. The composite material and the like also exhibit excellent handling properties and storage stability. The present specification may also provide uses of the composite material and the like.

SLURRY RECOVERY METHOD

Resumen de: WO2025200260A1

The present application provides a slurry recovery method, and belongs to the technical field of battery manufacturing. The slurry recovery method comprises: measuring the viscosity of an electrode slurry utilized during an electrode coating process; and in response to the viscosity of the electrode slurry being not greater than a viscosity threshold value, performing slurry preparation on the electrode slurry according to a first slurry preparation process to obtain a slurry that can be used again, or in response to the viscosity of the electrode slurry being greater than the viscosity threshold value, performing slurry preparation on the electrode slurry according to a second slurry preparation process to obtain a slurry that can be used again, the second slurry preparation process being different from the first slurry preparation process.

CYLINDRICAL BATTERY

Resumen de: WO2025205815A1

A cylindrical battery, which is an example of an embodiment of the present invention, comprises an electrode body (14) in which a positive electrode (11) and a negative electrode (12) are wound with a separator (13) in between and a bottomed cylindrical exterior can (16) accommodating the electrode body (14). The negative electrode (12) extends farther to the winding start side of the electrode body (14) than a position facing a positive electrode starting end (11x). The electrode body (14) has a negative electrode facing part where the winding inner surface and the winding outer surface of the negative electrode (12) face each other across the separator (13), and a spacer (50) disposed in the negative electrode facing part. At least a part of the spacer (50) is disposed within a range of no more than 140° from the positive electrode starting end (11x) toward the winding start side along the winding direction with respect to a winding center Z of the electrode body (14).

SOLID ELECTROLYTE, ELECTRODE MIXTURE CONTAINING SAME, SOLID ELECTROLYTE LAYER, SOLID STATE BATTERY, AND METHOD FOR EVALUATING SOLID ELECTROLYTE

Resumen de: WO2025205585A1

The present invention addresses the problem of providing a solid electrolyte that allows a solid state battery to be used safely even when the usage environment changes from a normal usage environment to a harsh usage environment. In an X-ray diffraction pattern of the solid electrolyte measured using an X-ray diffraction device employing CuKα radiation, the value of IA/IB is 1.0 or more, and the value of IC/ID is less than 0.90, where IA is the integrated intensity of a diffraction peak observed at a position of 2θ=15.4°±1°, IB is the integrated intensity of a diffraction peak observed at a position of 2θ=17.8°±1°, IC is the integrated intensity of a diffraction peak observed at a position of 2θ=25.3°±1°, and ID is the integrated intensity of a diffraction peak observed at a position of 2θ=29.7°±1°.

BATTERY PACK

Resumen de: WO2025200317A1

A battery pack (100), comprising: a housing (10) provided with an accommodating space (101); a battery module (20) arranged in the accommodating space (101); a BMS module (30) spaced apart from the battery module (20); and an isolation plate (40) provided between the battery module (20) and the BMS module (30) and sealedly connected to the housing (10) so as to isolate the battery module (20) from the BMS module (30).

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2025199679A1

The present invention belongs to the technical field of batteries, and provides a secondary battery and an electronic device. The secondary battery comprises a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a negative electrode active material layer, the negative electrode active material layer comprises silicon-containing active particles, and the spherization degree of the silicon-containing active particles is A; and the electrolyte contains fluoroethylene carbonate, and based on the mass of the electrolyte, the mass percentage content of fluoroethylene carbonate is B%, with A and B satisfying: 1.6≤(B/A)≤29.4. In this way, the synergistic effect between the spheroidization degree of the silicon material particles and the content of fluoroethylene carbonate can be fully exerted, and the crushing of the silicon particles and side reactions with the electrolyte are reduced, thereby improving the initial coulombic efficiency and cycle performance of the secondary battery and enhancing the over-discharge gas production resistance.

SECONDARY BATTERY

Resumen de: WO2025206057A1

This secondary battery includes: an electrode group in which a positive electrode, a negative electrode, and a separator are wound; an electrolyte; a bottomed cylindrical outer can that accommodates the electrode group and the electrolyte; a sealing plate that is disposed in the opening of the outer can with an insulating gasket interposed therebetween; a positive electrode lead that connects the positive electrode and the sealing plate; and a negative electrode lead that connects the negative electrode and the outer can. The negative electrode includes a negative electrode current collector, and a negative electrode mixture layer supported on the negative electrode current collector. In the outermost periphery of the negative electrode, the negative electrode mixture layer faces the inner surface of the outer can, and the negative electrode lead is disposed further to the inner peripheral side than the positive electrode lead. When the radius of the electrode group is R, the positive electrode lead is disposed within a region whose distance in the radial direction from the winding axis of the electrode group is less than 0.9 R. In an external short circuit, a heat generation amount Q1 of the positive electrode lead and a heat generation amount Q2 of the negative electrode lead satisfy the relationship Q1 < Q2.

BATTERY

Resumen de: WO2025204494A1

The present invention improves charge/discharge characteristics. This battery has a positive electrode, a negative electrode, and an electrolyte layer that contains a solid electrolyte. The negative electrode comprises: a negative electrode current collector layer; a negative electrode active material layer residing on the electrolyte layer side with respect to the negative electrode current collector layer; and a negative electrode intermediate layer that is in contact with the negative electrode current collector layer and the negative electrode active material layer. The solid electrolyte contains S. The negative electrode current collector layer contains Cu. The negative electrode active material layer contains Si. The negative electrode intermediate layer contains Cu and Si. The molar ratio of Si to Cu in the negative electrode intermediate layer is 0.13-1.20.

SIGNAL ACQUISITION ASSEMBLY OF BATTERY CELL AND BATTERY PACK

Resumen de: WO2025200195A1

A signal acquisition assembly (1) of a battery cell (20) and a battery pack. The signal acquisition assembly (1) comprises a frame (10), a circuit board (11), a plurality of pin-type electrical connectors (12), and a plurality of signal acquisition lines (13); the frame (10) has a first side surface (101) and a second side surface (102) opposite to each other in a first direction; the circuit board (11) is provided with a plurality of insertion structures (110), each pin-type electrical connector (12) comprises a first connection portion (1210) and a pin-type insertion portion (1220), the pin-type insertion portions (1220) of the plurality of pin-type electrical connectors (12) are inserted into the plurality of insertion structures (110) in one-to-one correspondence, and the pin-type insertion portions (1220) are electrically connected to a battery management circuit (113) carried by the circuit board (11); second connection portions (130) of the plurality of signal acquisition lines (13) are correspondingly connected to the first connection portions (1210) of the plurality of pin-type electrical connectors (12); and an acquisition portion (131) of each signal acquisition line (13) is configured to acquire a signal of the battery cell (20).

CATHODE ACTIVE MATERIAL, POSITIVE ELECTRODE, SODIUM-ION BATTERY, BATTERY ASSEMBLY, AND ELECTRIC SYSTEM

Resumen de: WO2025200436A1

A cathode active material, a positive electrode, a sodium-ion battery, a battery assembly, and an electric system. The cathode active material satisfies: the cross-sectional filling rate of the cathode active material ranging from 75% to 99%; the tap density of the cathode active material ranging from 1.5 g/cm3 to 2.5 g/cm3; and the value of the particle size distribution spread K of the cathode active material ranging from 0.9 to 3.0, wherein K＝(D90-D10)/D50. By means of making the tap density, cross-sectional filling rate and particle distribution range of the cathode active material be within the above-mentioned ranges, the compaction density of a positive electrode can be improved, thereby increasing the volumetric energy density of a battery.

LIQUID COOLING SYSTEM WITH DIRECT COOLING CONNECTION

Resumen de: WO2025200273A1

Disclosed in the present application is a liquid cooling system with direct cooling connection, comprising: a liquid cooling plate assembly, which comprises two or more liquid cooling plate branches, each of the liquid cooling plate branches being provided with a quick plug-in socket; and a direct-cooling type liquid cooling pipeline, which comprises an L-shaped quick plug-in connector, at least one T-shaped quick plug-in connector and a hydraulic connector which are sequentially connected by means of a communication pipe, the quick plug-in socket of each of the liquid cooling plate branches being plugged with the L-shaped quick plug-in connector or the T-shaped quick plug-in connector so as to connect the liquid cooling plate branch to the direct-cooling type liquid cooling pipeline.

POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, SODIUM ION BATTERY, BATTERY ASSEMBLY AND ELECTRICAL SYSTEM

Resumen de: WO2025200434A1

A positive electrode active material, a positive electrode, a sodium ion battery, a battery assembly and an electrical system, wherein the positive electrode active material meets: the cross-sectional filling rate α of the positive electrode active material is 75%-99%, and the post-compression rebound rate ε of the positive electrode active material is 3%-10%; the post-compression rebound rate ε=1-(the compaction density after rebound/the maximum compaction density); the cross-sectional filling rate α and the post-compression rebound rate ε of the positive electrode active material satisfy: 8≤α/ε≤30. The positive electrode active material has high energy density and good cycle performance.

ELECTROCHEMICAL DEVICE

Resumen de: WO2025205316A1

This electrochemical device comprises a positive electrode, a negative electrode, and a lithium ion-conductive electrolyte, said negative electrode being provided with a negative electrode current collector and a negative electrode material layer supported on the negative electrode current collector. The negative electrode material layer comprises a negative electrode active material that undergoes reversible doping with lithium ions. The negative electrode active material comprises a carbon material. The negative electrode material layer has a coated region. The surface of the negative electrode material layer is divided into: a first region, which contains a region in proximity to a connection region with a negative electrode lead terminal; and a second region outside the first region. A composition ratio X1 of lithium fluoride to lithium carbonate contained in the coated region in the first region of the negative electrode material layer is higher than a composition ratio X2 of lithium fluoride to lithium carbonate contained in the coated region in the second region.

A CURRENT COLLECTOR PLATE FOR A SECONDARY BATTERY CELL AND A METHOD OF ASSEMBLY THEREOF

Resumen de: WO2025203053A1

The disclosure herein relates to a current collector plate for a secondary cylindrical battery cell. The current collector plate (200) is adapted to be accommodated on a first electrode tab portion (102) of an electrode assembly (100A) of the cell (100), and includes an outer portion (202) disposed at a first plane (P1), adapted to be positioned abutting with the first electrode tab portion, and an inner portion (204) disposed concentrically inwards of the outer portion at a second plane (P2), adapted to be disposed at a gap (G) from the outer portion. The inner portion has a diameter at least half of the diameter of the cell. The current collector plate provides better contact with an electrode tab portion of the cell and ease in opening of the venting portion.

SOLID-STATE BATTERY

Resumen de: WO2025204666A1

A problem addressed by this disclosure is to provide a solid-state battery whereby high-pressure pressing and thinning of a solid electrolyte layer is possible and durability can be improved. An embodiment for solving said problem is a solid-state battery structured so as to have a negative electrode layer, a solid electrolyte layer, and a positive electrode layer stacked in the stated order, wherein the solid electrolyte layer comprises one or more layers, and the limit distortion of at least one of those layers is 0.5% or more.

SOLID ELECTROLYTE AND SECONDARY BATTERY

Resumen de: WO2025204813A1

The present invention improves charge and discharge characteristics while improving water resistance. Provided is a solid electrolyte having a composition formula represented by LixSn1-wZwSy, wherein Z is an element including at least Si, and the relationships 3.0≤x≤5.0, 3.0≤y≤5.0, and 0

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

Resumen de: WO2025206837A1

A cathode active material for a lithium secondary battery according to the present invention is a single-crystal cathode active material for a lithium secondary battery, the cathode active material having a form in which 1 to 20 single particles are aggregated, wherein the single particles may satisfy equation 1 in the present specification.

BATTERY PACK AND VEHICLE COMPRISING BATTERY PACK

Nº publicación: WO2025206548A1 02/10/2025

Solicitante:

LG ENERGY SOLUTION LTD [KR]
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