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1441
resultados
Última actualización
07/08/2025 [09:25:00]
Resultados 525 a 550 de 1441
Resumen de: JP2024083946A
To provide: a precursor for obtaining a positive electrode active material for lithium ion secondary batteries, the positive electrode active material having excellent particle strength, while maintaining good battery characteristics; and an intermediate.SOLUTION: There is provided a precursor of a positive electrode active material for lithium ion secondary batteries, the precursor being composed of a lithium metal composite oxide that is configured from secondary particles, each of which is an aggregate of primary particles, or from both the primary particles and the secondary particles. The precursor is characterized in that: the precursor comprises a metal composite hydroxide that is configured from secondary particles, each of which is an aggregate of primary particles, or from both the primary particles and the secondary particles; the secondary particles each are composed of a core part that occupies the inside of the secondary particle, and a shell part that encloses the core part and covers the outer side of the core part; the core part and the shell part having a porous structure and a solid structure, respectively; and the metal composite hydroxide contains nickel, manganese and cobalt, the metal composite hydroxide having a pore volume of 0.2 to 0.5 ml/g and an average pore diameter of 11.5 to 15.0 nm.SELECTED DRAWING: Figure 1
Resumen de: WO2025159375A1
The present invention relates to a fire prevention device for a battery pack of an electric vehicle, which can prevent a fire in a battery cell by lowering the temperature of the battery cell by detecting overheating of the battery cell and spraying cooling water.
Resumen de: WO2025157228A1
A cover plate assembly and a battery cell comprising the cover plate assembly. The cover plate assembly comprises a cover plate (1) and an explosion-proof valve body (2). The explosion-proof valve body (2) comprises a valve plate (20); the valve plate (20) comprises an opening portion (200) and an outer edge portion (201) surrounding the opening portion (200); the outer edge portion (201) is connected to the cover plate (1); the valve plate (20) is provided with a score line (202); the score line (202) has a first end (2020) and a second end (2021); a base (21) surrounds the outer edge portion (201); and the base (21) has a first side surface (210) and a second side surface (211). The residual thickness of the valve plate (20) at the score line (202) is T, the depth of the score line is T1, the distance between the first side surface (210) and the second side surface (211) is W1, and the minimum distance between the score line (202) and the second side surface (211) is W2, satisfying: 0.2≤T/(T+T1)≤0.5, and 0.3≤W2-W1≤5. By optimizing the parameters and dimensions of portions of the valve plate (20), it is ensured that the explosion-proof valve body (2) and the cover plate (1) have sufficient structural strength, thereby improving the overall strength of the battery cell. In addition, when the pressure inside the battery cell reaches a threshold, the opening portion (200) can be opened in a timely manner by means of the score line (202), thereby improving the safety of
Resumen de: WO2025157143A1
Disclosed in the present application are an electrode sheet, an electrode assembly and a battery. The electrode sheet comprises a main body portion and a plurality of protrusions, wherein each protrusion is formed by means of bending part of the electrode sheet towards one side of the main body portion, and has an inner surface connected to one surface of the main body portion and an outer surface connected to another surface of the main body portion; and the area of the outer surface of each protrusion is S1, the projection area of the outer surface of each protrusion in the direction of the thickness of the electrode sheet is S2, and S1 and S2 meet 1.01≤S1/S2≤1.7. Reduction in damage to the electrode sheet is facilitated, and the electrode sheet is not stretched and extended too much; and the protrusions provided have good structural stability, are configured to support a separator, and cause an appropriate gap between the main body portion and the separator, thereby facilitating an improvement in the performance of a battery.
Resumen de: WO2025157152A1
The present application belongs to the technical field of batteries. Disclosed are a battery cell, a battery and an electrical device. Provided in the present application is a battery cell, the battery cell comprising a housing, electrode terminals, electrode assemblies and current collecting members, wherein the electrode terminals are arranged on a wall of the housing; the electrode assemblies are accommodated inside the housing, and each electrode assembly comprises a tab; and the current collecting members are arranged inside the housing, the current collecting members and the electrode terminals are welded to form a first weld mark, and the current collecting members and the tabs are welded to form second weld marks. In the thickness direction of the current collecting members, a projection of the first weld mark on a first plane is a first projection, projections of the second weld marks on the first plane are second projections, and the first plane is perpendicular to the thickness direction of the current collecting members. The first projection and the second projections at least partially overlap in a first direction, which is beneficial to prolonging the cycle life of the battery cell.
Resumen de: WO2025156799A1
A novel additive, an electrolyte, and a lithium ion battery, relating to the technical field of lithium ion batteries. The electrolyte comprises a lithium salt and a non-aqueous solvent for dissolving the lithium salt, the electrolyte further comprises an electrolyte additive, the electrolyte additive comprises a positive electrode film-forming additive and a negative electrode film-forming additive, and the electrolyte additive further comprises a fluoro isocyanate-based pyridazine organic compound. The additive can absorb moisture and hydrofluoric acid in the electrolyte, reduce the dissolution of transition metals, improve the thermal stability of lithium hexafluorophosphate, and maintains the stability of a ternary material under high voltage; a sulfuric acid group on the novel additive can be oxidized by oxygen at a positive electrode, so that the oxygen generated when an LFO lithium supplementing agent is activated is absorbed, the capacity exertion, high temperature cycle and high temperature storage of the LFO lithium supplementing agent are significantly improved, and the DCIR of the battery will not obviously increase, thereby improving the stability of the battery.
Resumen de: WO2025157028A1
An electrode sheet (300), an electrode assembly and a battery. The electrode sheet (300) comprises a first surface perpendicular to the thickness direction of the electrode sheet (300), wherein the first surface comprises a bump region (310), and a plurality of protrusions (311) are formed in the bump region (310); there is a spacing between the bump region (310) and an edge of the first surface; and the area of the bump region (310) is Y, the projected area of the first surface in the thickness direction of the electrode sheet (300) is E, and Y and E satisfy: 0.1≤Y/E≤0.98. The setting of an appropriate area proportion of the plurality of first protrusions (311) is facilitated; the first protrusions (311) can provide effective support for a separator (50), such that the plurality of first protrusions (311) can effectively buffer a winding stress during a winding process of the electrode assembly and an expansion force for expansion of the electrode assembly, thereby improving the electrolytic-solution infiltration effect of the electrode assembly and ameliorating the interface problem of an electrode; and when applied to a battery, the electrode sheet (300) can improve the cycling performance of the battery.
Resumen de: WO2025157035A1
Disclosed in the present application are an electrode sheet, an electrode assembly and a battery. The surface of an active material layer of the electrode sheet facing away from a current collector is provided with a protrusion point area, a tab area and an end clearance area. The electrode sheet comprises a plurality of first protrusion parts distributed in the protrusion point area, the plurality of first protrusion parts protruding towards the same side of the electrode sheet in the thickness direction of the electrode sheet. The end clearance area is arranged at an end part of the protrusion point area in the length direction of the electrode sheet and extends to an edge of the electrode sheet. The tab area extends to an edge of the electrode sheet in the width direction of the electrode sheet, a tab assembly being provided in the tab area and spaced apart from the protrusion point area. Configuring the protrusion point area, the tab area and the end clearance area of the electrode sheet to be combined with each other can effectively ameliorate an interface problem caused by squeezing between electrode layers, thus improving the cycle performance of batteries.
Resumen de: WO2025156898A1
The present application relates to the technical field of batteries, and in particular to a battery pack having a temperature monitoring function, and an energy storage system. The battery pack having a temperature monitoring function comprises a module support, a plurality of battery cells, a wire harness, a heat conduction assembly, and a temperature sensor. The module support is used for fixing the plurality of battery cells arranged in sequence; the heat conduction assembly is fixed on the module support; the heat conduction assembly is in contact with the surface of each battery cell among the plurality of battery cells for heat conduction; the temperature sensor is in contact with the surface of the heat conduction assembly; the temperature sensor is used for collecting temperature information of the heat conduction assembly; and one end of the wire harness is electrically connected to the temperature sensor, and the other end of the wire harness is configured to be electrically connected to a controller, so as to transmit signals between the temperature sensor and the controller. The battery pack provided by the present application can reduce the number of temperature sensors, thereby simplifying the structure of the battery pack, and reducing costs of the battery pack.
Resumen de: WO2025156897A1
The present application provides an electrolyte, a lithium ion battery, and an electric device. The electrolyte comprises a lithium salt, an organic solvent, and an additive as shown in formula (I): formula (I), wherein Ar is selected from substituted or unsubstituted aryl groups. The additive represented by formula (I) in the electrolyte can respectively generate a stable cathode-electrolyte interface film and a stable solid electrolyte interface film on the surfaces of the positive and negative electrodes of the battery, so that the battery has good high-voltage resistance and high-voltage cycle performance.
Resumen de: WO2025156900A1
The present application relates to the technical field of battery information collection modules, and in particular to a cells contact system (CCS) assembly and a battery pack. The CCS assembly comprises a signal collection board, an insulated mounting support, a heat-conducting member and a temperature sensor, wherein the insulated mounting support is fixed on a surface of a battery module, the battery module comprises a plurality of battery cells which are arranged in sequence, and the insulated mounting support comprises a mounting groove; the heat-conducting member is mounted in the mounting groove, the bottom wall of the mounting groove comprises openings, the openings face the plurality of battery cells, and the heat-conducting member comes into contact with surfaces of the plurality of battery cells by means of the openings; the temperature sensor collects temperature information of the heat-conducting member; and the signal collection board is fixed to the side of the insulated mounting support that faces away from the battery module, the signal collection board is connected to the temperature sensor, and the signal collection board is used for receiving the temperature information collected by the temperature sensor and transmitting the temperature information to a controller. The CCS assembly performs measurement on a plurality of battery cells by means of one temperature sensor, thus reducing the number of temperature sensors and optimizing the structure.
Resumen de: WO2025156867A1
Provided in the present application are a silicon-carbon negative electrode material, and a preparation method therefor and the use thereof. The negative electrode material comprises a porous carbon substrate, and the porous carbon substrate comprises a carbon layer arranged on the surface thereof; pores of the porous carbon substrate are filled with a silicon-carbon material and a carbon material; and the carbon material comprises carbon nanotubes and graphene, wherein the carbon nanotubes and the graphene are compounded on the surface of the silicon-carbon material particles and/or among the silicon-carbon material particles.
Resumen de: WO2025157031A1
Provided are an electrode assembly and a battery. Electrode sheets (100) and separators of the electrode assembly are wound multiple times to form a flat electrode body (10), wherein at least one electrode sheet (100) is provided with bumps (200), a straight part (11) of the electrode body (10) has a first thickness L1 in a first direction, and a corner part (12) of the electrode body (10) has a second thickness L2 in a second direction, L1 and L2 satisfying: 1.5≤L1/L2≤2.4. When an electrode sheet (100) is provided with bumps (200), the interlayer interaction force of the electrode body (10) is appropriate, and the bumps (200) are not prone to deformation under the action of a winding stress and an expansion force, such that the bumps (200) can stably support the separators (13). When the electrode assembly is applied to the battery, the performance of the battery can also be optimized.
Resumen de: WO2025156850A1
Embodiments of the present application disclose a sodium ion battery and an electric device. The sodium ion battery comprises: a positive electrode; a negative electrode, comprising a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer being arranged on the negative electrode current collector, the thickness of the negative electrode active material layer being D1 μm, and the porosity being ρ%; and an electrolyte, comprising a sodium salt, a solvent, and a surfactant, the content of the surfactant being W0% on the basis of the total mass of the electrolyte, and the hydrophile-lipophile balance (HLB) value of the surfactant being HLB and satisfying the following relationship: 80≤D1*ρ*HLB/(100*W0)≤1000. The HLB value of the surfactant is regulated and controlled to match the porosity of the negative electrode active material layer, promoting the infiltration of the electrolyte into the pore structure, thus improving the cycle performance and the rate capability of the sodium ion battery.
Resumen de: WO2025159371A1
This secondary battery manufacturing apparatus for manufacturing an electrode assembly, in which electrodes and a separator are alternately stacked, comprises: a table on which the separator is placed; a pair of rollers that are located above the table and bend the separator into a zigzag shape so that a plurality of adhesion surfaces are formed on the separator; and a pair of coating members that are located on the left and right sides of the pair of rollers and apply an adhesive to the adhesion surfaces formed on the separator, wherein in the electrode assembly, the electrodes are adhered to the adhesion surfaces coated with the adhesive. In a secondary battery manufacturing process, the secondary battery manufacturing apparatus can manufacture an electrode assembly in which positive electrodes and negative electrodes are stacked while alternately adhered to a separator.
Resumen de: WO2025156849A1
Disclosed in the present application are a sodium-ion battery and an electric device. The sodium-ion battery comprises: a positive electrode, a negative electrode and an electrolyte. The negative electrode comprises a negative electrode current collector, a negative electrode active material layer and a metal-philic additive, wherein the negative electrode active material layer is arranged on the negative electrode current collector, the surface density of the negative electrode active material layer is ρ mg/cm2, and the specific surface area of the negative electrode active material layer is A m2/g; and the metal-philic additive is added to the negative electrode active material layer, and the content of the metal-philic additive is W2% based on the mass of the negative electrode active material layer. The electrolyte comprises a leveling additive, wherein the content of the leveling additive is W1% based on the total mass of the electrolyte. The following relationship is satisfied: 0<(W1+W2)/(A+10/ρ)≤1. In the present application, the metal-philic additive is introduced into the negative electrode active material layer; the leveling additive is introduced into the electrolyte; and a sodium precipitation risk is relieved by regulating and controlling the relationship between the surface density and the specific surface area of and the metal-philic additive in the negative electrode active material layer and the leveling additive in the electrolyte, thereby improving the
Resumen de: WO2025156797A1
The present application provides a negative electrode sheet, a water-based negative electrode slurry, a secondary battery and an electric device. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer arranged on at least one side of the negative electrode current collector. The negative electrode film layer comprises a negative electrode active material and a water-based binder. At least part of the negative electrode film layer further comprises an additive. The additive comprises a water-soluble unsaturated organic acid salt, and an unsaturated group in the water-soluble unsaturated organic acid salt comprises any one or more of alkenyl, alkynyl and formula (I). The cycling stability of a cell comprising the negative electrode sheet is improved.
Resumen de: WO2025156709A1
A battery cell (1000) and a battery pack. The battery cell (1000) comprises a casing (110), a reinforcing plate (120) and a battery core (200); the casing (110) comprises a plurality of side plates; the plurality of side plates define a cavity (2); the battery core (200) is mounted in the cavity (2); the plurality of side plates include a first side plate (111); the first side plate (111) is provided with a pressure relief opening (115); the pressure relief opening (115) is used for discharging gas in the cavity (2); the reinforcing plate (120) is arranged in the cavity (2) and connected to the surface of the first side plate (111) located in the cavity (2); the area of the surface of the first side plate (111) located in the cavity (2) is S2, and the area of the surface of the reinforcing plate (120) facing the first side plate (111) is S1, wherein 0.5≤S1/S2≤1; in this case, the contact area between the reinforcing plate (120) and the battery core (200) is relatively large, so that the battery core (200) is not prone to short-circuiting and collapsing under the compression of the reinforcing plate (120).
Resumen de: WO2025159375A1
The present invention relates to a fire prevention device for a battery pack of an electric vehicle, which can prevent a fire in a battery cell by lowering the temperature of the battery cell by detecting overheating of the battery cell and spraying cooling water.
Resumen de: WO2025159209A1
To provide a secondary battery component that can provide excellent cycle characteristics when used in a secondary battery. A secondary battery component comprising a metal complex represented by formula (1): Q(n-m) - M - Lm (1) wherein M is an n-valent metal, m is an integer of 0 or more and (n-1) or less, Q is a ligand selected from the group consisting of unsubstituted or substituted 8-hydroxyquinolinolato, unsubstituted or substituted 2-(2-pyridyl)phenolato, and unsubstituted or substituted 2-(2',2''-bipyridin-6'-yl)phenolato, and L is a ligand selected from the group consisting of phenolato and naphtolato.
Resumen de: WO2025159013A1
Provided is a non-aqueous electrolyte secondary battery (10) wherein a negative electrode (12) has a negative electrode core and a negative electrode mixture layer that is provided on the negative electrode core. The negative electrode mixture layer includes a silicon-containing material and a carbon material for a negative electrode active material, and has a porosity of 30-50%. The silicon-containing material includes an amorphous carbon phase and a silicon phase that is dispersed in the amorphous carbon phase, and the content of the silicon-containing material with respect to the negative electrode active material is 30-60 mass%.
Resumen de: WO2025159625A1
Provided are a negative electrode for a lithium metal battery, a lithium metal battery including same, and a method for manufacturing a negative electrode for a lithium metal battery. The negative electrode comprises: a negative electrode current collector; and an electrodeposition-inducing layer disposed on the negative electrode current collector. The electrodeposition-inducing layer includes a first electrodeposition-inducing layer and a second electrodeposition-inducing layer disposed between the first electrodeposition-inducing layer and the negative electrode current collector, the first electrodeposition-inducing layer includes a metal, and the second electrodeposition-inducing layer includes a conductive polymer.
Resumen de: WO2025159037A1
Provided are: a nonaqueous electrolyte containing (I) a solute, (II) a nonaqueous organic solvent, and (III) a compound represented by general formula (1) described in the specification; a nonaqueous electrolyte battery comprising at least a positive electrode, a negative electrode, and the nonaqueous electrolyte; a method for manufacturing the nonaqueous electrolyte battery, the method comprising a step for injecting the nonaqueous electrolyte; a compound represented by general formula (1) described in the specification; and a method for producing a compound represented by general formula (1A) described in the specification.
Resumen de: WO2025156714A1
Embodiments of the present invention relate to the technical field of power batteries, and provide an equalization strategy and system based on an SOC extreme value. The equalization strategy comprises: acquiring cell SOC values of a battery pack and an average SOC value; determining whether the battery pack needs to execute an equalization operation; when it is determined that the battery pack needs to execute the equalization operation, determining a cell SOC extreme value and a cell SOC sub-extreme value of the battery pack; and using a midpoint between the average SOC value and the cell SOC sub-extreme value as a target SOC to equalize the battery pack. According to the equalization strategy and system, by predicting the SOC of a battery pack, a cell having the maximum SOC during charging and a cell having the minimum SOC during discharging are equalized in time, thereby ensuring full utilization of the capacity of the battery pack, and achieving equalization of the whole battery pack and high equalization efficiency.
Nº publicación: WO2025156780A1 31/07/2025
Solicitante:
BYD CO LTD [CN]
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Resumen de: WO2025156780A1
A hybrid vehicle control method, a controller, a medium, and a vehicle. The hybrid vehicle control method comprises: in response to a power battery of the vehicle being in a thermal runaway state, controlling a generator to supply power to a cooling system, such that the cooling system cools the power battery.
BOPI
Sede Electrónica
