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1484
resultados
Última actualización
08/12/2025 [07:09:00]
Resultados 75 a 100 de 1484
Resumen de: WO2025246250A1
Provided are an explosion-proof valve and a battery. The explosion-proof valve, which is used for being mounted on a battery, comprises a valve body (100) and a burst groove (200). The thickness of the middle part of the valve body (100) is greater than that of the edge of the valve body (100). The burst groove (200) is arranged on the valve body (100) and close to the edge of the valve body (100).
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.
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.
Resumen de: WO2025245958A1
The present application provides a battery cell safety prediction method and apparatus, a device, and a medium. The method comprises: determining a first environment parameter, and executing a first thermal runaway operation on a target battery cell on the basis of the first environment parameter until thermal runaway of the target battery cell occurs; acquiring a first state parameter of the target battery cell; determining a target heat generation model; performing three-dimensional modeling on the structure of a battery; executing a second thermal runaway operation on the established model; on the basis of the target heat generation model, acquiring a second state parameter during the second thermal runaway operation; and determining the safety of a target battery pack. A target heat generation model is determined by means of an actual thermal runaway operation, and the safety of a target battery pack is determined on the basis of the target heat generation model by means of a thermal runaway simulation operation, thereby saving test costs and simplifying a battery cell safety prediction system. Additionally, the method reduces the requirements of mechanism modeling for basic data, and thus improves the efficiency and accuracy of battery cell safety prediction.
Resumen de: WO2025246146A1
A polymer solid electrolyte membrane, a preparation method therefor, a solid-state battery, and an electrical apparatus, belonging to the field of batteries. The preparation method comprises: mixing a zinc salt, a lithium imide salt, a polymer matrix, and an organic solvent, drying, pre-pressing and forming, and then performing hot pressing for 35-45 minutes at 10-15 MPa and a temperature of 100-120°C. The decomposition temperature of the lithium imide salt is greater than the hot-pressing temperature. The polymer matrix contains polar functional groups. The melting temperature is less than or equal to 100°C, and the glass transition temperature is less than or equal to -15°C. The lithium imide salt and the polymer matrix are jointly used as a main body, and the mass ratio of the zinc salt to the main body is (0.8-1.2):100. The prepared polymer solid electrolyte membrane has a block structure having flexible chain segments and rigid chain segments that alternate with each other, and the polymer solid electrolyte membrane can effectively improve the cycle performance of a solid-state battery.
Resumen de: WO2025245954A1
A positive electrode active material, a preparation method therefor, and a battery. The positive electrode active material comprises: an inner core, the inner core comprising a lithium metal phosphate; a first coating layer, the first coating layer covering at least part of the surface of the inner core; and a second coating layer, the second coating layer covering at least part of the surface of the first coating layer. The positive electrode active material has an XRD diffraction peak intensity of S1 at a 2θ diffraction angle of 35.5°-35.7°, and the positive electrode active material has an XRD diffraction peak intensity of S2 at a 2θ diffraction angle of 24.1°-25.4°, S2/S1 being (0.005-0.05):1. The positive electrode active material has an XRD diffraction peak intensity of S3 at a 2θ diffraction angle of 28.8°-29.2°, S3/S1 being (0.005-0.05):1.
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).
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.
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.
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.
Resumen de: WO2025246219A1
The present application discloses a battery cell, a battery, an energy storage apparatus, and an electrical apparatus. The battery cell comprises a casing, a first conductive member, a first pole, a first deformation member, and a first connecting member. The casing has a first wall. The first conductive member is disposed at an outer side of the first wall and is insulated from the first wall. The first pole is connected to the first conductive member. The first deformation member is electrically connected to the first wall, and the first deformation member is configured to be able to deform to contact the first conductive member, so as to electrically connect the first pole to the first wall. The first connecting member is connected to the first conductive member and the first wall. The technical solutions provided by the present application can improve battery reliability.
Resumen de: WO2025245953A1
An electrolyte and a lithium-ion battery using same. The electrolyte comprises a first additive; the mass ratio of the first additive in the electrolyte is 2.5-5.5%; the first additive comprises trimethyl phosphate and pentafluoro ethoxy cyclotriphosphazene; upon calculation, the mass ratio of trimethyl phosphate to pentafluoro ethoxy cyclotriphosphazene is equal to 0.5-2:2-3.5.
Resumen de: WO2025246134A1
A battery cell (20), a battery (100), and an electric device, relating to the technical field of batteries. The battery cell (20) comprises a casing (21), electrode assemblies (22), and a pressure relief mechanism (23). The casing (21) comprises a wall portion (211). The electrode assemblies (22) are accommodated in the casing (21). The pressure relief mechanism (23) is arranged on the wall portion (211), and the pressure relief mechanism (23) is configured to release the internal pressure from the battery cell (20). The wall portion (211) has a first surface (2111) facing the electrode assemblies (22); abutting portions (2112) protrude from the first surface (2111); along a thickness direction (X) of the wall portion (211), the abutting portions (2112) abut against the electrode assemblies (22), so that an exhaust channel (24) is formed between the electrode assemblies (22) and the first surface (2111); and the exhaust channel (24) is configured to guide the gas inside the casing (21) to the pressure relief mechanism (23). The battery cell (20) can mitigate the phenomenon of the electrode assemblies (22) blocking or clogging the pressure relief mechanism (23), so as to enhance the internal exhaust smoothness of the battery cell (20) during thermal runaway, such that the pressure relief rate of the battery cell (20) can be increased, thereby facilitating reduction of the risk of explosion or bursting of the battery cell (20) caused by untimely pressure relief, improving the o
Resumen de: WO2025245936A1
A case (100), a battery (300), and an electric device (400). The case (100) comprises a frame (10) and a support plate (20). The support plate (20) comprises a plurality of structural plates and a buffer plate (23) arranged between every two adjacent structural plates. At least one structural plate is connected to the frame (10). The buffer plate (23) comprises a plate body (231) and a reinforcing plate (232) arranged in a gap of the plate body (231), and the reinforcing plate (232) is at least used for filling the gap of the plate body (231) in the width direction of the support plate (20).
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).
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).
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.
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).
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.
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.
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.
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
Resumen de: WO2025246107A1
The present application provides a secondary battery and an electric device. The second battery comprises a positive electrode sheet. The positive electrode sheet comprises a positive electrode current collector and a positive electrode film layer arranged on the surface of the positive electrode current collector. The positive electrode film layer comprises a positive electrode active material. The positive electrode active material comprises a lithium iron phosphate material doped with element M and element Q, wherein M comprises one or more of Mn, Ni, Co, Cr, Cu, Bi, and Sb, and Q comprises one or more of F, N, and Cl.
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.
Nº publicación: WO2025245887A1 04/12/2025
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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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.
BOPI
Sede Electrónica
