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SEPARATOR, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025246590A1

A separator, a secondary battery, and an electric device, relating to the technical field of batteries. In the separator, phosphate-modified polymer particles are introduced into a polymer coating, and the liquid absorption rate of the separator soaked at 60°C for 8 hours and the thickness expansion rate of the separator soaked at 60°C for 8 hours are reasonably selected to meet a specific relationship, so that the swelling rate of the separator can be significantly reduced, and the adhesion property, electrolyte wettability, heat resistance and flame retardance of the separator are improved. Therefore, when the separator is applied to the preparation of a secondary battery, the prepared secondary battery has good cycle performance and charging and discharging performance, and has low internal resistance and excellent safety performance.

POWER LEVEL DETERMINATION METHOD, ENERGY STORAGE POWER SUPPLY, AND COMPUTER READABLE STORAGE MEDIUM

Resumen de: WO2025246646A1

A power level determination method, an energy storage power supply (100), and a computer readable storage medium (500). The power level determination method comprises: (011) on the basis of a preset charge and discharge energy table and operating parameters of an energy storage power supply, determining a stored energy upper limit of the energy storage power supply; (012) on the basis of charge and discharge parameters of the energy storage power supply, calculating charge and discharge energy; and (013) on the basis of the charge and discharge energy and the stored energy upper limit, determining the current power level of the energy storage power supply.

BATTERY AND ELECTRICAL DEVICE

Resumen de: WO2025246133A1

A battery (100) and an electrical device, relating to the technical field of batteries. The battery (100) comprises a fixing member (10) and battery cells (20). The fixing member (10) has a first surface (11). Each battery cell (20) comprises a housing (21) and an electrode assembly (22). The electrode assembly (22) is accommodated in the housing (21). The housing (21) has a wall portion (211). The wall portion (211) has a second surface (2111) facing away from the electrode assembly (22), and along a thickness direction (X) of the wall portion (211), the second surface (2111) and the first surface (11) are arranged to face each other. One of the first surface (11) and the second surface (2111) is provided with an engagement slot (2111a), and the other is provided with an engagement portion (111). The engagement portion (111) is inserted into and fitted with the engagement slot (2111a). The battery (100) can fasten the battery cells (20) onto the fixing member (10) to achieve fastening and positioning of the battery cells (20), thereby improving the structural stability and reliability of the battery cells (20) when assembled in the battery (100) and reducing phenomena such as shaking or displacement of the battery cells (20) during use. Accordingly, the risk of the battery cells (20) shifting or colliding with other components can be effectively reduced, improving the usage stability and service life of the battery (100).

BATTERY CELL, BATTERY, ENERGY STORAGE DEVICE AND ELECTRIC DEVICE

Resumen de: WO2025246208A1

The present application discloses a battery cell, a battery, an energy storage device and an electric device. The battery cell comprises a housing, a first electrically conductive member, a first terminal post, and a first deformable member, wherein the housing has a first wall; the first electrically conductive member is disposed on an outer side of the first wall and is insulated from the first wall; the first electrically conductive member comprises a first sub-component and a second sub-component connected to each other, the second sub-component being used for connection with a busbar component; the first terminal post is connected to the second sub-component; and the first deformable member is electrically connected to the first wall, the first deformable member being configured to deform to come into contact with the first sub-component, thereby electrically connecting the first terminal post to the first wall. The technical solution provided in the present application can improve the reliability of the battery.

WINDING APPARATUS AND BATTERY PRODUCTION DEVICE

Resumen de: WO2025246124A1

The present application relates to a winding apparatus and a battery production device. The winding apparatus comprises: a first slitting mechanism, which is configured to slit an electrode sheet to be slit into at least two electrode sheets in the length direction of the electrode sheet to be slit; a second slitting mechanism, which is configured to slit a separator to be slit into at least two separators in the length direction of the separator to be slit; and a winding mechanism, which is configured to wind the slit electrode sheets and the slit separators in a one-to-one correspondence mode to form at least two electrode assemblies. In the present application, a first slitting mechanism can slit an electrode sheet to be slit into at least two electrode sheets, and a second slitting mechanism can slit a separator to be slit into at least two separators, such that the electrode sheets and the separators can be stacked in a one-to-one correspondence mode, and then wound by a winding mechanism to simultaneously form at least two electrode assemblies, effectively improving the winding efficiency of the electrode assemblies, thereby improving the overall production efficiency of batteries.

POSITIVE ELECTRODE SHEET AND MANUFACTURING METHOD THEREFOR, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025246449A1

To solve the problem of limited ion conduction in existing thick electrodes, a positive electrode sheet and a manufacturing method therefor, a battery, and an electric device are provided. The positive electrode sheet comprises a current collector and an active material layer, the active material layer being arranged on at least one side of the current collector. The active material layer comprises a positive electrode active material, an electronic conductive agent, an ionic conductive agent, and an additive; and a particle size ratio of the positive electrode active material to the ionic conductive agent ranges from (1:1) to (1:0.05).

ELECTROLYTE, BATTERY, AND ELECTRICAL DEVICE

Resumen de: WO2025246448A1

An electrolyte, a battery, and an electrical device, relating to the technical field of batteries. The electrolyte comprises: a first solvent, the first solvent comprising an amide solvent and/or a sulfonamide solvent; a second solvent, the second solvent comprising a linear ether and/or a cyclic ether; a lithium salt; and an additive. By optimizing the ratio of the first solvent to the second solvent, the solvation structure of Li+ can be effectively adjusted, and an SEI film is generated on the surface of the negative electrode while a uniform and dense CEI film is formed on the positive electrode side, thereby suppressing side effects and structural damage to the high-voltage positive electrode and effectively improving the high-voltage cycling stability of the battery. The lithium salt and the additive are added into a mixed solvent system, so that the fast-charging performance of the battery at room temperature is improved. In addition, the ratio of the first solvent with high-voltage resistance characteristics to the second solvent with low viscosity can be adjusted according to actual needs, significantly reducing electrolyte viscosity and improving battery wettability.

BATTERY PACK AND CHARGING SYSTEM

Resumen de: WO2025246585A1

A battery pack and a charging system. The battery pack comprises: a housing (10); and a plurality of cell units (20) arranged in the housing (10), wherein the peripheries of at least some of the cell units (20) are surrounded by a first material (60) in a water-locking state.

BATTERY PACK AND ENERGY STORAGE DEVICE

Resumen de: WO2025246461A1

Provided in the embodiments of the present application are a battery pack and an energy storage device. The battery pack comprises a housing, and a separator, battery modules and battery management units, which are arranged in the housing, wherein the battery management units are arranged on the separator; the separator is fixed in the housing, and divides a space in the housing into a battery compartment and a power distribution compartment that are distributed in a first direction; the battery management units are located in the power distribution compartment; the battery modules are located in the battery compartment; and the battery management units are electrically connected to the battery modules. The present application can achieve the separation of the battery compartment from the power distribution compartment, suppress moisture cross-flow that causes condensation, and reduce the baking of the battery compartment by a board, thereby improving the temperature consistency of batteries at the ends of modules. By means of the design of the structure of a compartment separation board, the compartment separation board has the function of integrated BMU installation; rapid installation is achieved by means of snap-fitting; and during production, assembly preprocessing can be performed on a branch line, and an assembly is then installed in the PACK, such that the assembly and replacement efficiency can be improved.

BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Resumen de: WO2025245895A1

A battery cell, a battery, and an electrical apparatus, belonging to the technical field of batteries. The battery cell comprises: a casing component, a pole component, and an electrode component. The casing component is provided with an accommodating cavity and comprises a shell which participates in enclosingly forming the accommodating cavity, the casing being an integrated member, one end of the casing being provided with an opening, and an end of the casing opposite to the opening being a first casing wall. The pole component is mounted on the first casing wall. The electrode component is accommodated in the accommodating cavity and is connected to the pole component.

BATTERY CELL AND PROCESSING METHOD THEREFOR, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025245887A1

A battery cell (102) and a processing method therefor, a battery (100), and an electric device (1000), relating to the technical field of batteries. The battery cell (102) comprises a casing component (1), pole components (2), and a battery core component (3). The casing component (1) has an accommodating cavity (13) and comprises a first casing wall (111) that participates in defining the accommodating cavity (13). The pole components (2) are mounted on the first casing wall (111) and each comprise a pole body (21). The battery core component (3) comprises at least one battery core group (32A), the battery core group (32A) comprises n battery core bodies (32), the n battery core bodies (32) are all arranged in the accommodating cavity (13) and are arranged sequentially in a first direction (F1). A tab group (33) is connected to an end of each battery core body (32), all tab groups (33) of the battery core group (32A) extend toward the middle portion of the battery core group (32A) in the first direction (F1) and are connected to form a tab portion (332), and the tab portion (332) is electrically connected to the pole body (21), wherein n≥1 and n is a positive integer.

HEAT EXCHANGE MEMBER, CASE, BATTERY, AND ELECTRIC DEVICE

Resumen de: WO2025245866A1

A heat exchange member, a case, a battery, and an electric device. The heat exchange member (20) is used for a case (100) for a battery (1000), and comprises: a heat exchange plate (21); a back plate (22) provided on one side of the heat exchange plate (21) in a first direction (Z) and connected to the heat exchange plate (21), the first direction (Z) being the thickness direction of the heat exchange plate (21); and heat exchange tubes (23) provided between the heat exchange plate (21) and the back plate (22) and fixedly connected to the heat exchange plate (21) and/or the back plate (22).

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: WO2025245687A1

A secondary battery and an electronic device. The secondary battery comprises a metal case, a pole, an electrode assembly, a first tab lead and a first insulating member. The metal case comprises a top wall, and a first wall and a second wall which are connected to two sides of the top wall. The pole is provided on the top wall and insulated from the metal case. The electrode assembly comprises a main body, and a first tab and a second tab connected to the main body, the main body and the top wall are arranged opposite to each other in a second direction, and the first tab extends from the main body toward the top wall. The first tab lead comprises a first bending point, and a first segment and a second segment located on two sides of the first bending point. In a first direction, the first wall is closer to the first bending point than the second wall. The first insulating member is provided between the first wall and the first bending point. In the first direction, the projection of the first bending point is located within the projection of the first insulating member, and at least part of the projection of the main body overlaps the projection of the first insulating member. The safety performance of the secondary battery is improved.

BATTERY

Resumen de: WO2025246368A1

Provided in the present disclosure is a battery. The battery comprises a positive electrode sheet, a negative electrode sheet and an electrolyte, wherein the electrolyte comprises a compound represented by formula 1. When the mass percent of a transition metal in a negative electrode active material of the negative electrode sheet is M, the specific surface area of the negative electrode active material is B m2/g, the ratio of the total mass of the electrolyte to the discharge capacity of the battery is N g/Ah and the mass percent of the compound represented by formula 1 in the electrolyte is C1, the following formula is met: (A). (1), wherein m is an integer of 0-3, n is an integer of 0-3, m and n are not 0 at the same time, and p is an integer of 1-5; R0 is a single bond or methylene; R1 is hydrogen, halogen, alkyl having 1-5 C atoms, or haloalkyl having 1-5 C atoms; and R2, R3 and R4 are each independently selected from (2), (3), (4), (5), (6), (7) and (8).

HEATING CONTROL METHOD AND DEVICE AND ENERGY STORAGE SYSTEM

Resumen de: WO2025246355A1

Disclosed are a heating control method and device and an energy storage system. The heating control method is applied to an energy storage system, the energy storage system comprising a battery pack (101), an inverter (102), and a heat dissipation fan (106) disposed within a same housing, and the battery pack (101) comprising battery cells (104) and a heating film (105). The heating control method comprises: detecting the temperature of the battery cells (104); and, on the basis of a temperature change of the battery cells (104), selecting, from a plurality of heating modes of the energy storage system, a target heating mode matching the temperature change of the battery cells (104) and performing heating control, wherein the heating modes at least comprise coordinated control of the heat dissipation fan (106) and the heating film (105).

LITHIUM-RICH MANGANESE-BASED POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: WO2025246617A1

A lithium-rich manganese-based positive electrode material and a preparation method therefor and a use thereof, relating to the technical field of lithium batteries. By designing a gradient lithium distribution to stabilize a lattice oxygen framework of a material, the escape of lattice oxygen can be reduced, which not only can reduce gas generation but also can prevent the migration of transition metal ions and stabilize the crystal structure, thereby improving cycle stability. A layer of Mn3O4 material comprising oxygen vacancies is coated on an outer layer, so that oxygen escaping from the outermost layer is trapped, and irreversible phase transitions during charging and discharging can also be suppressed, thereby preventing an electrolyte from being in direct contact with a positive electrode material, and minimizing side reactions. The lithium-rich manganese-based positive electrode material can isolate lattice oxygen evolution, stabilize the crystal structure, and minimize side reactions, thereby enhancing electrochemical performance.

BATTERY SAFETY CONTROL SYSTEM BASED ON SINGLE-LINE INERT GAS CIRCULATION

Resumen de: WO2025245774A1

A battery safety control system based on single-line inert gas circulation, which belong to the technical field of the safety of energy storage batteries. The system comprises a safety monitoring subsystem, a safety management subsystem and a single circulation line subsystem. Both thermal management and fire-fighting processes are executed by means of the single circulation line subsystem, thereby avoiding the switching between a thermal management execution mechanism and a fire-fighting execution mechanism, and complex control; and the thermal management and fire-fighting processes are executed by a single line, thereby reducing the construction cost and economic cost and saving on a system mounting space; moreover, an inert gas is used as both a cooling medium to cool a battery pack and a fire suppression medium to perform fire-fighting on the battery pack, which is safe and reliable; and finally, being independent of the control of an energy management system, the safety monitoring subsystem and the safety management subsystem can immediately formulate a cooling or fire-fighting mode when the temperature of the internal environment of the battery pack is excessively high or thermal runaway occurs, and can dynamically adjust, on the basis of a change in the internal environment of the battery pack, the single circulation line subsystem so as to perform a cooling or fire-fighting action on the battery pack.

HIGH-SAFETY BATTERY OPERATION MANAGEMENT SYSTEM AND METHOD

Resumen de: WO2025245772A1

A high-safety battery operation management system and method, relating to the technical field of energy storage battery safety. The battery operation management system comprises a battery state monitoring subsystem, an energy management subsystem, and a safety control subsystem. The safety control subsystem is independent of the energy management subsystem, and controls a temperature control unit and a fire protection unit separately, avoiding complex control processes and raising the priority of control over temperature management and fire protection management by the safety control subsystem, thereby implementing rapid control and rapid response and ensuring the safety in battery operation; in addition, data interaction can be conducted between the energy management subsystem and the safety control subsystem, and intelligent preheating of the working environment of a battery is implemented, enabling the battery to be in an optimal operation state.

A METHOD FOR COATING A SUBSTRATE

Resumen de: WO2025245587A1

There is provided a method for producing a coated substrate, the method comprising: forming an aluminium (oxy) hydroxide slurry by simultaneously feeding streams of an aluminium nitrate solution and a basic solution, such as an ammonia solution, into a liquid over a reaction period, while maintaining an elevated temperature and a controlled pH; allowing a substrate to contact the slurry to thereby form an aluminium (oxy) hydroxide coating on the substrate; separating the coated substrate from the liquid.

COMPOSITIONS

Resumen de: WO2025245570A1

Disclosed herein are layered transition metal oxide materials. Also disclosed herein are electrodes comprising layered transition metal oxide materials. In addition, also disclosed herein is the use of such layered transition metal oxide materials in the manufacture of electrodes and electrochemical cells, and processes for making such layered transition metal oxide materials and electrodes.

TERNARY POLYCRYSTAL POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, LITHIUM-ION BATTERY AND ELECTRIC DEVICE

Resumen de: WO2025247223A1

The present application relates to a ternary polycrystal positive electrode material and a preparation method therefor, a lithium-ion battery and an electric device. The ternary polycrystal positive electrode material comprises a ternary positive electrode material matrix and a composite oxide coating layer coating the surface of the matrix, wherein the composite oxide coating layer is rich in Co, Nb and M3 elements, with the M3 element being selected from at least one of Si, W, Sn, La, Zr, Ce, Mg and Al. With regard to the composite oxide coating layer rich in Co, Nb and M3 elements on the surface of the ternary polycrystal positive electrode material in the present application, all the elements cooperate with one another, such that the positive electrode material having the composite oxide coating layer rich in Co, Nb and M3 elements has better electrochemical performance.

MANIFOLD AND THERMAL MANAGEMENT DEVICE

Resumen de: WO2025247248A1

A manifold and a thermal management device are provided in the present disclosure. The manifold comprises: a main body portion extending in a first direction, and a plurality of flow channels provided on the main body portion; a first fixation portion and a second fixation portion arranged along the first direction at two respective ends of the main body portion; and an intermediate fixation portion arranged in a middle region of the main body portion, wherein the intermediate fixation portion is located between the first fixation portion and the second fixation portion with respect to the first direction.

NEGATIVE ELECTRODE MATERIAL AND ELECTROCHEMICAL DEVICE

Resumen de: WO2025247417A1

Provided in the present application are a negative electrode material and an electrochemical device. The negative electrode material comprises a silicon-containing material and a carbon-containing material, and the negative electrode material has a pore structure, the pore structure having the following distribution characteristics: using the BET method to test the negative electrode material, it is measured that the negative electrode material has a first pore structure having a pore size of 2 nm-20 nm and a second pore structure having a pore size of 20 nm-80 nm; the pore volume of the first pore structure is V1, the pore volume of the second pore structure is V2, and the specific surface area of the negative electrode material is S, where 0.1 μm≥(V1+V2)/S≥0.01 μm, 0.8≥V1/V2≥0.01, and 10.0 m2/g≥S≥0.1 m2/g. The present application improves the capacity, rate performance, cycle efficiency, and performance under high-temperature and low-temperature conditions of the negative electrode material by optimizing the pore structure of the negative electrode material.

SECONDARY BATTERY AND ELECTRONIC DEVICE COMPRISING SAME

Resumen de: WO2025246570A1

The present application provides a secondary battery and an electronic device comprising same. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte solution. The negative electrode sheet comprises a negative electrode material layer, wherein the negative electrode material layer comprises a silicon-containing active material; the silicon-containing active material comprises silicon; and on the basis of the total mass of the negative electrode material layer, the mass percentage content of silicon is C%, and 1≤C≤20. The electrolyte solution comprises: (1) a first component, which is a boron-containing lithium salt, wherein on the basis of the total mass of the electrolyte solution, the mass percentage content of the first component is B%, and 0.1≤B≤5; and (2) a second component, which comprises at least one of a compound represented by formula I or a compound represented by formula II, wherein on the basis of the total mass of the electrolyte solution, the mass percentage content of the second component is A%, and 25≤A≤70. The secondary battery of the present application has good high-temperature and high-voltage cycling stability.

THERMAL INSULATION MATERIAL COMPRISING POLYESTER FIBER MESH FABRIC LAMINATED WITH ALUMINUM FOILS ON BOTH SIDES, AND PREPARATION METHOD THEREFOR

Nº publicación: WO2025246085A1 04/12/2025

Solicitante:

SIJIA NEW MAT SHANGHAI CO LTD [CN]
\u601D\u5609\u73AF\u4FDD\u6750\u6599\u79D1\u6280\uFF08\u4E0A\u6D77\uFF09\u6709\u9650\u516C\u53F8

Resumen de: WO2025246085A1

The present application relates to thermal insulation materials, and in particular to a thermal insulation material comprising a polyester fiber mesh fabric laminated with aluminum foils on both sides, and a preparation method therefor. The thermal insulation material comprising a polyester fiber mesh fabric laminated with aluminum foils on both sides consists of adhesive layers, a polyester fiber mesh fabric layer, and aluminum foil material layers; each aluminum foil material layer is formed by laminating an aluminum foil with PET and PE; the adhesive layers are formed by applying an adhesive to both the upper and lower surfaces of the polyester fiber mesh fabric layer and then curing and solidifying same; the aluminum foil material layers are bonded to the polyester fiber mesh fabric layer by means of the adhesive layers; the adhesive comprises a high molecular weight polyester resin, a curing agent, and ethyl acetate; the high molecular weight polyester resin has a molecular weight ranging from 25,000 to 30,000 and is prepared from raw materials comprising 2-chloro-1,3-propanediol and tetrahydrophthalic anhydride. In the present application, by means of the design of the unique composite structure, the optimized selection of the layers of materials and the accurate control in the preparation process, the factors work together, so that the coefficient of thermal conductivity of the prepared material satisfies the requirement of less than or equal to 0.038 W/(m.k), and the