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POSITIVE ELECTRODE ACTIVE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2026051476A1

Provided in the present application are a positive electrode active material, and a preparation method therefor and the use thereof. The positive electrode active material comprises an LiMnxFe1-xPO4 inner core and a carbon coating layer covering at least part of the surface of the inner core, wherein 0≤x<1. The compaction density of the positive electrode active material is not lower than 2.28 g/cm3; and the impedance of the positive electrode active material is not higher than 1,500 Ω. The compaction density and impedance of the positive electrode active material provided in the present application are defined, such that the positive electrode active material has a relatively high compaction density and good rate capability; and when the positive electrode active material is applied to a lithium-ion battery, the specific capacity, energy density and rate capability of the lithium-ion battery can be improved.

METHOD FOR DETERMINING STATE OF HEALTH OF BATTERY, METHOD FOR DETERMINING BATTERY CHARGING AND DISCHARGING STRATEGY, AND APPARATUS

Resumen de: WO2026051654A1

The present application provides a method for determining the state of health of a battery, a method for determining a battery charging and discharging strategy, and an apparatus. A specific implementation of the method for determining the state of health of a battery comprises: determining respective predicted voltages of a battery to be processed, at prediction moments and under multiple battery capacities; on the basis of each of the predicted voltages and a measured voltage of said battery at each of the prediction moments, obtaining multiple voltage residuals; determining a target voltage residual that satisfies a voltage residual requirement from among the multiple voltage residuals; on the basis of the multiple battery capacities, determining a first target battery capacity corresponding to the target voltage residual; and on the basis of the first target battery capacity and a rated capacity of said battery, determining the state of health of said battery. The method can conveniently and accurately determine the state of health of batteries in a wide range of application scenarios.

BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Resumen de: WO2026051456A1

The present application is applicable to the technical field of batteries (100), and provides a battery cell (10), a battery (100), and an electrical apparatus. The electrical apparatus comprises the battery (100), the battery (100) comprises the battery cell (10), and the battery cell (10) comprises a casing (2), an electrode terminal (3), and an insulating member (4). The casing (2) comprises a first wall (221); the electrode terminal (3) is provided on the first wall (221), and is provided with a limiting recess (301); the insulating member (4) comprises an insulating body (41) and a limiting member (42) connected to the insulating body (41); at least part of the insulating body (41) is disposed between the electrode terminal (3) and the first wall (221), and the insulating body (41) at least partly surrounds the periphery of the electrode terminal (3); and the limiting member (42) cooperates with the limiting recess (301) to form limiting in the axial direction (Z) of the electrode terminal (3). The limiting member (42) of the insulating member (4) has a limiting fit with the limiting recess (301) of the electrode terminal (3) in the axial direction (Z) of the electrode terminal (3), so that the insulating member (4) and the electrode terminal (3) are limited in the axial direction (Z). In this way, the bonding strength between the insulating member (4) and the electrode terminal (3) can be increased, and the risk of the electrode terminal (3) falling out of the insulatin

POWER BATTERY TEMPERATURE CONTROL SYSTEM

Resumen de: WO2026051459A1

A power battery temperature control system, comprising: a first temperature sensor, a second temperature sensor, a thermal management mechanism, and a controller. The first temperature sensor is disposed on a power battery; the second temperature sensor is disposed on a first water inlet passage; the thermal management mechanism is connected to an engine cooling circuit by means of a second water inlet passage and the first water inlet passage; and the controller is used for controlling, on the basis of temperatures fed back by the first temperature sensor and the second temperature sensor, the thermal management mechanism to connect or disconnect from the engine cooling circuit, or controlling a cooling module to start or stop. When the temperature of the power battery is lower than a threshold, cooling water of an engine is used to heat the power battery. However, the temperature of the cooling water is too high during the operation of the engine, such that the temperature of the cooling water of the engine needs to be lowered by means of the cooling module, and then the cooling water is supplied to the first water inlet passage to heat the power battery to a normal working temperature.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026051454A1

The present application is applicable to the technical field of batteries (100), and provides a battery cell (10), a battery (100), and an electric device. The electric device comprises the battery (100), the battery (100) comprises the battery cell (10), and the battery cell (10) comprises a casing (2), an electrode assembly (1), and electrode terminals (3). The casing (2) is provided with lead-out holes (201); the electrode assembly (1) is provided in the casing (2); each electrode terminal (3) comprises a terminal body (31) and a first boss (32), and the terminal body (31) covers the corresponding lead-out hole (201); in the axial direction (Z) of the lead-out holes (201), each first boss (32) is provided at the end of the terminal body (31) close to the electrode assembly (1); and the first bosses (32) pass through the lead-out holes (201) and are connected to the electrode assembly (1). The electrode terminals (3) each comprise the first boss (32) provided in the corresponding lead-out hole (201), so that when the size of the casing (2) is fixed, the electrode terminals (3) can extend into the casing (2). In this way, the height of the portions of the electrode terminals (3) located outside the casing (2) can be reduced, thereby reducing the size of the battery cell (10), thus reducing the space occupied by the battery cell (10) in a case (20), improving the space utilization rate of the case (20), and improving the energy density of the battery (100).

BATTERY APPARATUS, VEHICLE AND ELECTRICAL APPARATUS

Resumen de: WO2026051453A1

A battery apparatus (100), a vehicle (1000) and an electrical apparatus. The battery apparatus (100) comprises a box body (10), a first cavity (101) being provided in the box body (10); and battery cells (20) accommodated in the first cavity (101), one end of each battery cell (20) in a first direction being connected to the box body (10), and the other end of each battery cell (20) in the first direction being used for supporting the box body (10). Each battery cell (20) comprises a casing (23), an electrode assembly (24), electrode terminals (21) and a first pressure relief structure (22). The electrode terminals (21) and the first pressure relief structure (22) are respectively arranged at two ends of the casing (23) in the first direction. The electrode assembly (24) is arranged in the casing (23), and is connected to the electrode terminals (21). The ends of the battery cells (20) provided with the electrode terminals (21) are used for supporting the box body. The ends of the battery cells (20) having the electrode terminals (21) provide support for the box body (10), so as to improve the bearing capacity of a box cover.

BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2026051455A1

The present application is applicable to the technical field of batteries (100), and provides a battery cell (10), a battery (100) and an electric device. The electric device comprises the battery (100). The battery (100) comprises the battery cell (10). The battery cell (10) comprises a casing (2), an electrode assembly (1), an electrode terminal (3) and a first insulating member (4). The casing (2) is provided with a lead-out hole (201); the electrode assembly (1) is arranged in the casing (2); the electrode terminal (3) passes through the lead-out hole (201) or is arranged opposite to the lead-out hole (201); the electrode terminal (3) is connected to the casing (2) and the electrode assembly (1), and is provided with a limiting groove (301); the first insulating member (4) comprises an insulating body (41) and a limiting member (42) connected to the insulating body (41); the insulating body (41) is arranged between the casing (2) and the electrode assembly (1); the limiting member (42) is inserted into the limiting groove (301), and forms positional limitation with the limiting groove (301) in the axial direction (Z) of the lead-out hole. By inserting the limiting member (42) of the first insulating member (4) into the limiting groove (301) of the electrode terminal (3), positional limitation in the axial direction (Z) between the first insulating member (4) and the electrode terminal (3) is achieved, thereby improving the bonding strength between the electrode terminal (

LITHIUM-ION BATTERY ELECTROLYTE AND LITHIUM ION BATTERY

Resumen de: WO2026051457A1

A lithium-ion battery electrolyte and a lithium-ion battery. In order to solve the problem of poor high-temperature performance and normal-temperature cycle performance of a high-voltage NCM system lithium-ion battery, the electrolyte comprises: an organic solvent, a lithium salt, and an additive, wherein the organic solvent comprises a fluorinated carboxylic ester and a carbonate excluding ethylene carbonate, and wherein the additive comprises one or more of an alkynyl carbonate derivative, a dioxane compound, and a cyclic anhydride, and one or more of vinylene carbonate, fluoroethylene carbonate, ethylene sulfate, lithium difluorophosphate, lithium difluoro bis(oxalato) phosphate, and tris(trimethylsilyl) phosphate. The stability of the high-voltage NCM system lithium-ion battery at a high voltage is greatly improved by means of optimizing the combination of a solvent system and an additive, wherein the solvent system has a mixture of a fluorinated carboxylic ester and a carbonate excluding EC, such that the normal-temperature cycle performance, high-temperature cycle performance, high-temperature storage, and other such capabilities of said high-voltage NCM system lithium-ion battery are all improved.

BATTERY CELL, BATTERY DEVICE AND ELECTRIC APPARATUS

Resumen de: WO2026051439A1

Disclosed in the present disclosure are a battery cell, a battery device and an electric apparatus. The present disclosure relates to the technical field of batteries. The battery cell comprises a terminal post, an electrode assembly and a fixing member, wherein the electrode assembly is electrically connected to the terminal post and is disposed within a casing; the casing has a first wall, and the terminal post is disposed on the first wall; the fixing member comprises a first planar portion, a transition portion and a second planar portion; the transition portion is located between the first planar portion and the second planar portion; the first planar portion is snap-fitted with the terminal post, and the second planar portion is connected to the first wall; and at least one of the thickness of the second planar portion in the axial direction of the terminal post and the thickness of at least part of the transition portion in a direction perpendicular to the axial direction of the terminal post is greater than the thickness of the first planar portion in the axial direction of the terminal post.

HARD CARBON NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD FOR HARD CARBON NEGATIVE ELECTRODE MATERIAL, AND SODIUM-ION BATTERY

Resumen de: WO2026051406A1

The present invention relates to a hard carbon negative electrode material, a preparation method for a hard carbon negative electrode material, and a sodium-ion battery. The hard carbon negative electrode material has a closed pore volume of 0.01 cm3/g

COMPOSITE COPPER CURRENT COLLECTOR AND PREPARATION METHOD THEREFOR

Resumen de: WO2026051446A1

The present application relates to the technical field of current collectors, specifically to a composite copper current collector and a preparation method therefor. In the present application, a modified polymer film is obtained by means of subjecting a polymer and an active material to heating and melting, extrusion, casting, and biaxial stretching processes; copper layers are formed on the upper and lower sides of the modified polymer film, respectively, using a chemical plating method; finally, an anti-oxidation layer is prepared on the copper layers, thereby obtaining a composite copper current collector. The composite copper current collector prepared by means of the present application realizes one-step preparation of a composite copper current collector, namely a chemical plating method, successfully solving the problems of high energy consumption and low yield caused by physical vapor deposition process in conventional preparation processes. Compared with conventional methods, the performance of the composite copper current collector prepared by the present application is not degraded, while energy consumption is greatly reduced and yield is increased.

BATTERY CELL, BATTERY DEVICE, AND ELECTRIC APPARATUS

Resumen de: WO2026051440A1

The present disclosure relates to the technical field of batteries. Disclosed are a battery cell, a battery device, and an electric apparatus. The battery cell comprises a pole, an electrode assembly, a casing, and a fixing member, wherein the pole is electrically connected to the electrode assembly; the electrode assembly is arranged in the casing; the casing has a first wall; the pole is arranged on the first wall; the fixing member comprises a first flat portion, a transition portion, and a second flat portion; the transition portion is located between the first flat portion and the second flat portion; the first flat portion is engaged with the pole; the second flat portion is connected to the first wall; at least one of the thickness of the first flat portion in the axial direction of the pole, the thickness of the second flat portion in the axial direction of the pole, and the thickness of the transition portion in a direction perpendicular to the axial direction of the pole is greater than 0.8 mm and less than or equal to 1.5 mm.

Battery module

Resumen de: US20260066425A1

A battery module includes battery cells arranged in a first direction such that main surfaces of the battery cells are adjacent to each other, a pair of end plates at outermost sides of the battery cells, and a pair of side plates coupled to the pair of end plates and covering side surfaces of the battery cells. Each of the end plates includes a first elastic portion extending across the end plates in a second direction substantially perpendicular to the first direction, and each of the side plates includes a groove overlapping the first elastic portion in the second direction and extending in the first direction.

Fabrication Method of Raw Material for Lithium Iron Phosphate

Resumen de: WO2026054537A1

A method of preparing a raw material for a lithium iron phosphate positive electrode, according to one embodiment, comprises the steps of: extracting valuable metals from a metal oxide-based waste positive electrode material and preparing an extraction residue containing phosphorus as an impurity; adding, to the extraction residue, an iron-containing precipitating agent that forms a precipitate with phosphorus and recovering the precipitate; washing the recovered precipitate and then drying same; and calcining the dried precipitate.

ALL-SOLID SECONDARY BATTERY AND METHOD FOR PREPARING ALL-SOLID SECONDARY BATTERY

Resumen de: WO2026054388A1

The present invention relates to an all-solid-state secondary battery and a method for manufacturing an all-solid-state secondary battery. The all-solid-state secondary battery comprises two or more types of unit cells, each unit cell including a positive electrode, a negative electrode, and a solid electrolyte. The positive electrode and the negative electrode included in one unit cell include one type of positive electrode active material and one type of negative electrode active material, respectively, and the two or more types of unit cells differ from one another in at least one of the positive electrode, the negative electrode, and the solid electrolyte.

Battery module Battery pack and vehicle including the same

Resumen de: KR20260034941A

본 발명은, 팩 케이스에 수용되는 배터리 모듈에 있어서, 복수 개의 배터리 셀; 상기 복수 개의 배터리 셀을 수용하도록 구성되며, 적어도 일측면에 적어도 하나의 결합홀이 형성되는 모듈 케이스; 및 상기 모듈 케이스와 상기 팩 케이스 사이에 구비되어 상기 모듈 케이스로부터 상기 팩 케이스로 열을 전달하도록 구성되는 스페이서를 포함하는 것을 특징으로 하는 배터리 모듈에 관한 것이다.

ELECTRODE SHEET TRANSPORTING APPARATUS

Resumen de: US20260062245A1

An electrode sheet transporting apparatus includes a first transporting conveyor having a supply area receiving an electrode sheet, the first transporting conveyor being configured to transport the electrode sheet in a first direction, a supply member configured to supply the electrode sheet to the supply area, a lighting member configured to radiate light to the supply area, and a sensing member facing the lighting member, the sensing member being configured to detect light reflected from the electrode sheet on the supply area.

Electrode tab inspection device of electrode assembly and electrode tab inspection method using the same

Resumen de: WO2026054174A1

The present invention provides a cost-effective electrode tab inspection apparatus for quickly and accurately determining whether a stacked electrode tab is defective, and an electrode tab inspection method using same, the electrode tab inspection apparatus comprising: an imaging unit that images the electrode tab through transmission; an edge setting unit that sets edges for portions where color or brightness changes in an imaging result of the imaging unit; and a classification unit that classifies the edges set by the edge setting unit into edges related to stability and edges unrelated to stability.

METHOD OF RECYCLING LI-ION BATTERY

Resumen de: KR20260034904A

제안된 발명의 일 양상에 따르면, 용매화법 전기화학적 산화 용해(Solvometallurgical electrochemical oxidation dissolution)를 수행하고 양극재 파우더가 혼합된 상기 깊은 공융 용매(DES)에 Aliquat 336를 접촉하여 친환경적으로 리튬(Lithium), 니켈(Nickel), 코발트(Cobalt), 및 망간(Manganese) 중 적어도 어느 하나를 회수할 수 있다.

Ultrasonic welding device

Resumen de: US20260061514A1

An ultrasonic welding device includes an anvil configured to support a lower portion of a welding target, and a welding horn above the anvil, the welding target being between the welding horn and the anvil, and the welding horn including a body, a head at a first end of the body, and movable welding knurls on a surface of the head.

A TENSION CONTROL SYSTEM FOR ROLL-TO-ROLL EQUIPMENT

Resumen de: WO2026054437A1

The tension control system of a roll-to-roll facility related to the present embodiment may comprise: a load cell which comprises an unwinder provided to unwind a substrate, a rewinder provided to wind the substrate, and transfer rolls arranged between the unwinder and the rewinder to guide travelling of the substrate, and is provided to measure a vertical load of the travelling substrate; a friction coefficient measuring unit provided to measure a friction coefficient between the travelling substrate and the transfer rolls; a dancer roll which guides the travelling of the substrate and is provided to be movable in a direction perpendicular to the width direction of the substrate; and a tension controller provided to receive a measured value input from the load cell and a measured value input from the friction coefficient measuring unit to control operation of the dancer roll so as to control tension of the travelling substrate.

ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Resumen de: KR20260034815A

본 발명은 리튬 이차 전지용 전해액 및 이를 포함하는 리튬 이차 전지에 관한 것으로서, 상기 리튬 이차 전지용 전해액은, 비수성 유기 용매; 리튬염; 및 첨가제를 포함할 수 있다. 상기 비수성 유기 용매는 화학식 1로 표시되는 제1 화합물을 포함할 수 있다. 상기 첨가제는 화학식 2로 표시되는 제2 화합물을 포함할 수 있다. 상기 화학식 1 및 화학식 2에 대한 상세한 내용은 명세서 내에 기재된 바와 같다.

A TENSION CONTROL SYSTEM FOR ROLL-TO-ROLL EQUIPMENT

Resumen de: WO2026054441A1

A tension control system of a roll-to-roll facility, according to an embodiment of the present invention, may comprise: an unwinder provided to unwind a substrate; a re-winder provided to wind the substrate; and transfer rolls arranged between the unwinder and the re-winder to guide movement of the substrate. In addition, the tension control system of a roll-to-roll facility may comprise: a friction coefficient measurement unit including a measurement roll having a sensor provided on the surface thereof, wherein the measurement roll is arranged between the transfer rolls to measure a friction coefficient due to friction with the moving substrate; a dancer roll provided to guide the movement of the substrate while moving up and down in a direction perpendicular to the width direction of the substrate so that the tension of the substrate is changed; and a tension controller provided to control the operation of the dancer roll on the basis of the measured value of the friction coefficient measurement unit.

METHOD AND SYSTEM OF MANUFACTURING DRY ELECTRODE

Resumen de: US20260066261A1

A method for manufacturing a dry electrode includes supplying a dry electrode mixture to a pelletizing device that includes a pellet pattern, pelletizing the dry electrode mixture using the pelletizing device to generate a pelletized dry electrode mixture, and supplying the pelletized dry electrode mixture to a film forming device.

ELECTROLYTE WETTING APPARATUS

Nº publicación: KR20260034792A 12/03/2026

Solicitante:

삼성에스디아이주식회사

Resumen de: US20260066352A1

An electrolyte wetting apparatus includes a first mold configured to wrap a case of a secondary battery, an interior of the case accommodating an electrode assembly and an electrolyte that impregnates the electrode assembly; a magnetorheological fluid configured to wrap the first mold; and a magnetic field application device configured to apply a time-varying magnetic field to the magnetorheological fluid so that the secondary battery vibrates.