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847
resultados
Última actualización
15/07/2026 [08:03:00]
Resultados 250 a 275 de 847
Resumen de: WO2026144425A1
Provided in the present invention is a compact and lightweight thermal-runaway propagation suppression structure for a lithium-ion battery module. The structure comprises: thermal insulation sleeves, which each cover a battery cell; a high-specific-heat-capacity thermally-conductive frame, in which all battery cells and thermal insulation sleeves are embedded; thermal insulation plates, which are each placed at the top of the high-specific-heat-capacity thermally-conductive frame; and cooling measures, which are arranged on side faces of the high-specific-heat-capacity thermally-conductive frame. The overall lightweight structure in the present invention enables all the battery cells to share one heat dissipation element, thereby increasing the utilization rate of the heat dissipation element; moreover, the structure in the present invention facilitates the uniform heating of each surface of each battery cell in the module, makes full use of the thermal mass of an individual battery cell, and allows all the battery cells in the module to participate in heat sharing. In addition, the frame achieves the function of fixing the battery cells, and no additional battery-cell fixing apparatus is required for assembling the battery module. Therefore, the present invention is conducive to simplifying the structure of the module, providing a thermal-runaway propagation suppression structure with a smaller volume, and reducing the loss of energy density of the battery module caused by s
Resumen de: WO2026143906A1
The present application relates to the technical field of batteries. Provided are a positive electrode sheet, a battery, and an electric device. The positive electrode sheet satisfies the formula: 2.5≤H/PD≤4.5, wherein H represents the Mohs hardness grade of the positive electrode sheet, and PD represents the compaction density of the positive electrode sheet.
Resumen de: WO2026145585A1
A lithium-ion secondary battery, comprising a negative electrode sheet, a positive electrode sheet, a separator, and an electrolyte. A charge cut-off voltage of the battery is greater than or equal to 4.48 V; the negative electrode sheet comprises a silicon-carbon material in which the content of a silicon element is 30%-80%; the positive electrode sheet comprises a positive electrode active coating, the positive electrode active coating comprises lithium cobalt oxide, the lithium cobalt oxide comprises an aluminum element, and the mass content of the aluminum element in the positive electrode active coating is 6000 ppm-15000 ppm; the separator comprises an organic coating, and the organic coating faces the positive electrode sheet; the organic coating comprises polymer particles containing a nitrogen element, the thickness of the organic coating is 0.5 μm-4 μm, and the mass content of the nitrogen element in the organic coating is 10.5%-55%; and the electrolyte comprises fluoroethylene carbonate, and the mass content of the fluoroethylene carbonate in the electrolyte is 5%-30%. The battery can have high energy density, fast charging capability, excellent cycle stability, and high-temperature safety performance at a high charge cut-off voltage.
Resumen de: WO2026144384A1
The present application relates to a secondary battery and an electronic device. The secondary battery comprises a first tab 30 and a first electrode sheet 21; the first electrode sheet 21 comprises a first current collector 211 and a first active material layer 212; along a first direction Z, the first active material layer 212 is stacked on the surface of the first current collector 211; the first current collector 211 is provided with a first empty foil region 211a; and the first tab 30 is partially provided in the first empty foil region 211a. The secondary battery further comprises a first adhesive layer 50, and along the first direction Z, the first adhesive layer 50 is bonded between the first tab 30 and the first empty foil region 211a. The first tab 30 comprises a first surface 31 facing the first current collector 211; a plurality of first protruding portions 30a protrude from the first surface 31; and in the direction from the first tab 30 to the first empty foil region 211a, the width of the first protruding portions 30a in a second direction X decreases, and at least part of the first protruding portions 30a are in contact with the first empty foil region 211a. The occurrence of short circuits in the secondary battery can be reduced, and the first protruding portions 30a are configured to more easily pierce the first adhesive layer 50 so as to be in direct contact with and electrically connected to the first current collector 211, which is conducive to improving
Resumen de: WO2026145664A1
The present application provides a battery cell assembly and a battery. The battery cell assembly comprises a first separator, a negative electrode sheet, a second separator, and a positive electrode sheet that are sequentially stacked and wound. The first separator and the second separator are separately bonded to the negative electrode sheet to form a first composite area. The positive electrode sheet is bonded to at least part of the second separator to form at least one second composite area. The length of the second composite area is less than that of the first composite area. In the present application, a positive electrode sheet, a negative electrode sheet, and a separator are stacked, so that a jelly roll is prevented from being tightly wound due to respective tensions during winding. A first composite area can strengthen the bonding between the separator and the negative electrode sheet, so that the separator and the negative electrode sheet do not slide relative to each other. A second composite area can fix the positive electrode sheet at a set position to form a compensation area, that is, a certain gap is reserved between the positive electrode sheet and the negative electrode sheet in a non-composite area, so that the gap between the electrode sheets in a circular arc-shaped area of the jelly roll is increased, and thus space is reserved for cycle expansion of the battery, thereby effectively solving the problem of cycle expansion and deformation of the battery.
Resumen de: WO2026143869A1
The present invention belongs to the technical field of batteries. Disclosed are a negative electrode sheet, a secondary battery and an electrical apparatus. In the present application, by controlling the volume average particle diameter Dv50 of a first negative electrode active material and a second negative electrode active material in a negative electrode active material, the gradation ratio (X) of the negative electrode active material, the tensile strength of the negative electrode sheet, and the content of a binder in a negative electrode active material layer, the following relationship is satisfied: 0.69≤(A+B)×X/(N×C)≤160, which can effectively improve the adhesion and conductivity of the negative electrode sheet, effectively inhibit the expansion and contraction of the negative electrode active material, and further improve the stability of the negative electrode active material, such that the negative electrode active material can be uniformly distributed on the negative electrode sheet, thereby shortening migration and diffusion paths of lithium ions in negative electrode active materials, reducing the impedance of secondary batteries, and improving the cycle performance of secondary batteries.
Resumen de: WO2026144929A1
The present application relates to the technical field of overvoltage protection. Provided are an energy storage system direct-current unit with reliable overcurrent protection, and an energy storage system. The energy storage system direct-current unit comprises: a battery cluster, at least one fuse and an overvoltage protection apparatus, wherein the at least one fuse is connected in series in a direct-current circuit formed by the battery cluster; and the overvoltage protection apparatus is connected in parallel to the direct-current circuit, and is configured to suppress an overvoltage generated at the instant when the at least one fuse blows. In view of the problem that it may be difficult to interrupt a faulty overcurrent circuit due to an overvoltage at the instant when the fuse blows, the present application provides an overvoltage protection apparatus in an energy storage system direct-current unit. The overvoltage protection apparatus is connected in parallel to a direct-current circuit, and is configured to suppress an overvoltage generated at the instant when the fuse blows, thereby effectively reducing or even eliminating the risk of arc reignition leading to fusing failure after the fuse blows, and achieving reliable overcurrent protection of the direct-current unit.
Resumen de: WO2026143843A1
Provided in the present application are a top cover assembly, a battery and a battery pack. The top cover assembly comprises a cover plate, a terminal post assembly and terminal assemblies, wherein the terminal post assembly and the terminal assemblies are arranged on the cover plate; the terminal assemblies are connected to the terminal post assembly; the material of the terminal assemblies comprises copper; and at least part of a surface of each terminal assembly is provided with a first protective layer.
Resumen de: WO2026144900A1
The present application relates to the technical field of batteries, and discloses a battery cell and a battery pack. At least two flow guide ribs protrude from the side of an insulating member of the battery cell facing away from a top cover piece; the flow guide ribs are spaced apart from each other along the outer periphery of a second liquid injection hole; and the flow guide ribs can enhance the structural strength of a region around the second liquid injection hole, thereby reducing the risk of deformation of the insulating member. Moreover, a flow guide channel communicated with the second liquid injection hole is formed between two adjacent flow guide ribs, thereby ensuring liquid injection efficiency. Additionally, in the radial direction of the second liquid injection hole, the flow guide ribs protrude toward the second liquid injection hole, and an included angle θ between a first straight line and a second straight line of each flow guide rib satisfies: 10°≤θ≤150°, such that it is ensured that the flow guide channel between two adjacent flow guide ribs has a sufficient liquid passing area, thereby ensuring liquid injection efficiency and reducing the risk of blockage of a first liquid injection hole and the second liquid injection hole, and the manufacturing difficulty of the flow guide ribs can also be reduced, thereby reducing manufacturing costs of the battery cell.
Resumen de: US20260196605A1
0000 Provided are a battery liquid cooling system and a battery pack. The system includes at least two liquid cooling flow path modules sequentially arranged in a first direction. The liquid cooling flow path module includes multiple serpentine tubes and multiple expanded-joint tubes. All the serpentine tubes are disposed side by side at intervals in the first direction. The serpentine tubes extend in a second direction. A folded-back flow channel extending in a length direction of the serpentine tube is disposed within the serpentine tube. A liquid inlet end of the serpentine tube and a liquid outlet end of the serpentine tube are respectively disposed at two ends of the folded-back flow channel and are located at the same end in the length direction of the serpentine tube. Every two adjacent serpentine tubes communicate with each other through two expanded-joint tubes in an expansion manner.
Resumen de: WO2026145724A1
The present application provides a negative electrode slurry, a negative electrode sheet, and a lithium-ion battery. The negative electrode slurry comprises: a negative electrode active material, an electrochemical functional component having a porous structure, and a high-swelling polymer. Thus, the electrochemical functional component having the porous structure can provide more lithium ion transport channels, and can improve ionic conductivity; and the polymer having a high swelling rate can improve the wetting capability of an electrolyte solution to the surface of the negative electrode sheet, reduce interface transfer resistance, and improve the absorption and retention capability of the negative electrode sheet to the electrolyte solution. Therefore, the fast charging performance and cycle performance of the battery can be further improved.
Resumen de: WO2026144200A1
The present disclosure provides a lithium-ion secondary battery and an electric apparatus. A negative electrode sheet of the lithium-ion secondary battery comprises: a negative electrode current collector and negative electrode active material layers. The negative electrode active material layers include a first negative electrode active material layer and a second negative electrode active material layer which are stacked, and the second negative electrode active material layer is located on the side of the first negative electrode active material layer away from the negative electrode current collector. The first negative electrode active material layer comprises a first negative electrode active material, the first negative electrode active material comprises graphite, and the proportion of primary particles in the first negative electrode active material is greater than that of secondary particles; and the second negative electrode active material layer comprises a second negative electrode active material, the second negative electrode active material comprises graphite, and the proportion of secondary particles in the second negative electrode active material is greater than that of primary particles.
Resumen de: WO2026143921A1
A power supply system and a vehicle. The power supply system comprises: an enclosure, a battery and at least one purification device. The battery and the purification device are both arranged in the enclosure. The enclosure comprises at least one exhaust port, an exhaust end of the purification device is connected to the exhaust port of the enclosure, and the exhaust end of the purification device is also in communication with a first cavity of a housing of the purification device.
Resumen de: WO2026145536A1
The present disclosure relates to the technical field of batteries, and specifically relates to a silicon-carbon particle, a negative electrode sheet, and a battery. The present disclosure provides a silicon-carbon particle. The surface of the silicon-carbon particle is provided with a recessed portion; the number N of recessed portions on the surface of the silicon-carbon particle is greater than or equal to 1; and the diameter of the recessed portions ranges from 0.05 μm to 5 μm; and the depth of the recessed portions ranges from 10 nm to 5 μm. In the present disclosure, recessed portions are provided on the surface of the silicon-carbon particle, so that the cycling stability and the expansion performance of a silicon-based negative electrode material are improved.
Resumen de: WO2026145843A1
A coating separator and a preparation method therefor, and a secondary battery, relating to the technical field of battery separators. The coating separator comprises a base membrane and a coating layer covered on one side or two sides of the base membrane. The coating later comprises inorganic particles. After the coating separator is cut off by a serrated knife, cracks appear in the coating near the fracture and/or the coating near the fracture falls off. Any crack and/or falling satisfies the following characteristics: 1) the length of the crack in the MD direction is less than 20 μm, and the width of the crack is less than 20 nm; and 2) the area of the falling area is less than 1 μm2. By changing the preparation raw materials and process parameters of the base membrane in a base membrane section, and adjusting the ratio of two binders and the relationship between the BET of the inorganic particles to the total mass ratio of the binders in a coating section, the changing and the adjustments are used in cooperation to ameliorate the problems of cracks and falling of the cut separator, such that the cracks and falling are significantly ameliorated, thereby avoiding short circuits of a battery cell.
Resumen de: WO2026143928A1
The present invention provides a battery cover plate assembly and a secondary battery. The battery cover plate assembly comprises: a cover plate body provided with pressing block assembly areas and cover plate protrusions; and press-fit assemblies, the press-fit assemblies being correspondingly connected to the pressing block assembly areas, and any press-fit assembly comprising: a pressing block provided with a press-fit hole, each press-fit hole being formed on one side of the corresponding pressing block in the length direction; an upper plastic member comprising a fitting portion and a clearance recess, wherein each fitting portion is provided at the edge of the corresponding upper plastic member, two sides of the fitting portion respectively abut against the corresponding cover plate protrusion and the corresponding pressing block, and each cover plate protrusion is embedded in the corresponding clearance recess; and a riveting member sequentially passing through and connected to the corresponding pressing block and the corresponding upper plastic member through the corresponding press-fit hole. In the present invention, close fit with cover plate protrusions is achieved, so that sufficient expansion draft allowance is provided for a cover plate, thereby achieving the purpose of avoiding warping of the cover plate. Compared with the existing conventional battery cover plate structure, the present application has the advantages of an ingenious structural design, a signifi
Resumen de: WO2026143797A1
The present invention provides a composite metal foil, a preparation method therefor and a use thereof. The composite metal foil has a suitable amount of metal embedded in a base layer, enabling tighter bonding to a metal layer covering the surface of the base layer, and supplementing the strength of a base film and improving the bending resistance of the base film, so that the composite metal foil has better peel strength. The composite metal foil, especially a copper foil, can be used as a negative electrode current collector to realize lightweighting of a battery product, not only improving the peel strength of the copper foil, but also improving the conductivity of the copper foil in a local area. Moreover, a copper metal embedded structure also provides a rapid thermal response interface, thereby improving the safety of the battery.
Resumen de: WO2026144796A1
Disclosed in the present application are a pouch battery and a battery pack. The pouch battery comprises: a case, which comprises a body portion and a packaging portion; a battery cell, which comprises an electrode assembly, a positive tab and a negative tab, wherein the electrode assembly is arranged inside the body portion, the positive tab and the negative tab are both connected to the electrode assembly, the positive tab and the negative tab are located on the same side of the electrode assembly in a third direction, and the positive tab and the negative tab both pass through the packaging portion in the third direction and extend to the outside of the packaging portion; and a collection board, which is arranged on the packaging portion and has a collection module and a wireless transmission module, wherein the collection module is electrically connected to each of the positive tab and the negative tab, and the wireless transmission module is electrically connected to the collection module. Data information of the battery cell is collected by means of the collection module, and the collected data information is transmitted to an external device by means of the wireless transmission module, thereby providing strong data support for state evaluation, fault diagnosis and predictive maintenance of the battery cell, eliminating the provision of cables, simplifying the structure, reducing the weight, and reducing the occupied space.
Resumen de: US20260196522A1
0000 An anode active material for a secondary battery according to the present disclosure includes a composite particle including a core containing silicon and metal nanoparticles arranged on an outer surface of the core. A ratio of the volume of the metal nanoparticles to the volume of the core is greater than 0.22 and 0.4 or less.
Resumen de: US20260196679A1
0000 A rechargeable battery includes an electrode assembly including a separation layer, electrode plates stacked interposing the separation layer, and electrode tabs extending from each of the electrode plates and having a bent portion. An electrode lead connected to the electrode tabs has a bent portion, and a case accommodates the electrode assembly. The electrode tabs may include a lower side adjacent to the electrode assembly, and an upper side that is a remaining portion, which are parallel to each other. The electrode assembly, the electrode lead, and the case satisfy a first equation E=B*(0.73 to 0.77) and a second equation C=D*0.5. B indicates thickness of the electrode assembly, C indicates height of the electrode tabs, D indicates distance from a coupled portion of the case and the electrode lead to the electrode assembly, and E indicates distance between the bent portions.
Resumen de: WO2026144703A1
The present disclosure provides a silicon-based material and a preparation method therefor, a lithium-ion battery cell, a battery apparatus, and an electrical apparatus. The silicon-based material comprises a porous carbon matrix and silicon nanoparticles located in pores of the porous carbon matrix. The surface of the silicon nanoparticles is provided with a silicon oxide passivation layer formed by means of a passivation reaction. The ratio of ID/IG in the silicon-based material to ID/IG in the porous carbon matrix before the passivation reaction is (0.95-1.05):1. The mass ratio of Si to C in the silicon-based material is denoted as A. The mass ratio of Si to C before the passivation reaction is denoted as B, and the ratio of A to B is (0.95-1.05):1. The present disclosure can improve the thermal safety performance, cycle performance, and rate performance of a lithium-ion battery cell.
Resumen de: US20260196690A1
Provided are a battery module information collection and connection system and a powered device. The system includes an insulating bracket, flexible circuit boards, a battery control member, a first conductive portion, a collection member and a battery module. The insulating bracket is disposed on the battery module. The flexible circuit boards include a first flexible circuit board and a second flexible circuit board. The flexible circuit board is connected to the battery control member, and the cell is connected to a flexible circuit board. The battery control member is connected to the battery module. The first conductive portion is disposed on a side of the insulating bracket. One end of the first conductive portion is connected to the battery control member, and the other end of the first conductive portion is connected to a high-voltage interface, and the high-voltage interface is communicatively connected to the battery control member.
Resumen de: US20260196700A1
0000 A housing of the battery pack includes a battery compartment and an electrical compartment that are adjacently disposed in a length direction. The battery compartment is configured to accommodate a battery module. The battery module includes a plurality of electrochemical cells. The electrochemical cell is further provided with a vent valve, and the vent valve is located on the top surface or the bottom surface. The electrical compartment is configured to accommodate a power module. In an electrochemical cell of the battery module close to the electrical compartment, a barrier strip is disposed between a surface on which the vent valve is located and an inner wall of the housing. The barrier strip is located on a side of the vent valve facing the electrical compartment, and is configured to isolate the vent valve from the power module.
Resumen de: WO2026145327A1
A thermal management system (100) and a vehicle. The thermal management system (100) comprises: an air conditioning system (70); a first control valve (61), on which a high-pressure heat exchange loop (10), a battery heat exchange loop (20), a radiator loop (30), and a heat exchanger loop (40) are connected, the first control valve (61) being selectively connect one or more of the high-pressure heat exchange loop (10), the battery heat exchange loop (20), the radiator loop (30), and the heat exchanger loop (40), and the air conditioning system (70) exchanging heat with the heat exchanger loop (40) and a heating loop (50); a multi-way pipe (63), at least two ends of the multi-way pipe (63) being connected to the first control valve (61), and another end of the multi-way pipe (63) being connected to the battery heat exchange loop (20); and a condenser (71), an end of the condenser (71) being selectively connected to yet another end of the multi-way pipe (63), and another end of the condenser (71) being connected to the first control valve (61). A plurality of loops are interconnected via the first control valve (61) and the multi-way pipe (63), thereby reducing flow resistance under various operating modes, improving energy utilization, and optimizing the energy utilization efficiency of a heat pump or the heating loop (50).
Nº publicación: WO2026143985A1 09/07/2026
Solicitante:
CALB GROUP CO LTD [CN]
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Resumen de: WO2026143985A1
The present application relates to the technical field of batteries, and relates to a battery and an electric device. The battery in the present application comprises an electrolyte and a positive electrode sheet; the positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer provided on at least one surface of the positive electrode current collector; the positive electrode active material layer contains a positive electrode active material; the positive electrode active material comprises lithium iron phosphate; the electrolyte comprises tris(dimethylvinylsilyl)phosphate. By regulating the mass ratio a of tris(dimethylvinylsilyl)phosphate in the electrolyte, the contact angle b of the positive electrode active material layer and a solution, and the powder resistivity c of the positive electrode active material layer to satisfy a specific relational expression, the battery has fewer side reactions and low gas production in a cycle process, and the ion and electron conductivity of the positive electrode sheet is high, so that the battery has both low gas production and low DCR.
BOPI
Sede Electrónica
