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1145
resultados
Última actualización
06/01/2026 [07:57:00]
Resultados 25 a 50 de 1145
Resumen de: WO2026000700A1
The present application provides a battery thermal runaway prediction method and system, and a storage medium. The method comprises: acquiring voltage data of a battery under test under a preset condition; according to the preset condition and the voltage data, obtaining internal resistance data corresponding to said battery; on the basis of a preset activation energy model, processing the internal resistance data, and obtaining activation energy data corresponding to said battery; and, according to the activation energy data, determining a probability of thermal runaway of said battery, thereby achieving accurate prediction of thermal runaway of the battery.
Resumen de: WO2026000850A1
A composite positive electrode material and a preparation method therefor, and a secondary battery. The composite positive electrode material comprises: a positive electrode substrate; a fast-ion conductor coating layer covering the positive electrode substrate, wherein the fast-ion conductor coating layer has pores; and a carbon material located in the pores of the fast-ion conductor coating layer. The composite positive electrode material is a positive electrode material, having ion conductivity and electron conductivity, for an artificial CEI coating layer, and has high specific capacity; and a battery manufactured by using the composite positive electrode material has low internal resistance and a long cycle life.
Resumen de: WO2026000594A1
A cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material, a preparation method therefor, and a use thereof. The cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material has the following chemical formula: Li(NixMn1-x)MgyO2, where 0.1 ≤ x ≤ 0.5 and 0.01 ≤ y ≤ 0.1. The preparation method comprises: (1) mixing a nickel salt, a manganese salt, a magnesium salt, and deionized water to obtain a metal salt solution; (2) adding the metal salt solution, a precipitant solution, and a complexing agent solution into a base liquid in parallel flow and carrying out co-precipitation reaction, so as to obtain a lithium-rich manganese-based precursor; (3) mixing the lithium-rich manganese-based precursor and a lithium salt and performing primary calcination, so as to obtain a lithium-rich manganese-based intermediate; and (4) mixing the lithium-rich manganese-based intermediate and a lithium salt solution, and performing solid-liquid separation and then secondary calcination, so as to obtain a cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material. The provided cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material overcomes the shortcomings of conventional modification methods and improves the electrochemical performance of positive electrode materials.
Resumen de: WO2026000566A1
The present application relates to the technical field of batteries, and discloses a tape application method for a tab, a battery, and a tape application apparatus for a tab. The tape application method for a tab can enhance the bonding reliability between adhesive tapes and tabs. The tape application method for a tab comprises: placing a bare cell on a tape application tool, and enabling a tape application pending surface of a tab on the bare cell to be located at a position corresponding to an unwinding device, wherein the unwinding device can carry an adhesive tape; controlling the unwinding device to place the adhesive tape at a position corresponding to the tape application pending surface; and controlling an airflow generator to generate a pressing airflow towards the tape application pending surface for the adhesive tape, so that the adhesive tape is bonded to the tape application pending surface under the action of the pressing airflow. The tape application method for a tab provided in the present application is used for applying adhesive tapes onto tabs of bare cells.
Resumen de: WO2026000584A1
A battery (100) and an electric device (1000). The battery (100) comprises a case (10), a heat exchange member (104), and battery cells (20), and an accommodating space is formed in the case (10); the battery cells (20) are arranged in the accommodating space; the heat exchange member (104) comprises a heat exchange section (1041), the heat exchange section (1041) is arranged on one side of the wall surface of the battery cells (20) and is used for performing heat exchange with the battery cells (20), cavities (1042) are provided in the heat exchange section (1041), and there are multiple cavities (1042) arranged in a first direction, the first direction being perpendicular to the wall surface.
Resumen de: WO2026001723A1
A system for preparing copper-lithium composite sheets (103). The system comprises at least one unwinding assembly (20). The unwinding assembly (20) comprises: a main unwinding mechanism, which comprises a main unwinding roller (201), a main winding roller (202) and a conveying roller (2013) that are arranged in sequence in a Y direction; and a tape-splicing mechanism (204), which is located between the main unwinding roller (201) and the main winding roller (202), wherein the tape-splicing mechanism (204) comprises two adsorption members (2044) movably arranged in an X direction, with each adsorption member (2044) having two adsorption stations arranged in sequence in the Y direction, each adsorption station having a vacuum state for adsorbing a material tape and a vacuum-breaking state for releasing the material tape, and the X direction and the Y direction being set at an included angle. The configuration solves the problem in the prior art that manual tape splicing is mostly used, which easily leads to poor tape splicing accuracy.
Resumen de: WO2026001679A1
A battery, comprising a positive electrode and an electrolyte. The electrolyte comprises a fluoronitrile solvent, and the fluoronitrile solvent is a fluoronitrile compound. The positive electrode comprises a positive electrode active material, and the positive electrode active material comprises lithium cobalt oxide and a nickel-cobalt-manganese ternary material. Based on the total mass of the positive electrode active material, the mass content of the nickel element is k wt%, wherein 0 wt%
Resumen de: WO2026001788A1
A battery heating circuit, a heating control method, a controller, a battery system and an electric device. The battery heating circuit comprises: a battery, a resonant capacitor and a bridge arm, wherein the battery has a battery inductor; the resonant capacitor is connected in parallel to the battery, such that the resonant capacitor and the battery inductor form an LC parallel resonant circuit; the bridge arm is connected in parallel to the battery; and the bridge arm comprises a first bridge arm switch tube and a second bridge arm switch tube connected in series.
Resumen de: WO2026001541A1
The present application provides a negative electrode material and a preparation method therefor, and an electrochemical device using the negative electrode material. The negative electrode material comprises: a core, the core comprising silicon-based particles; a first layer comprising carbon, the first layer being present outside the core; a second layer comprising a first conductive material and a metal oxide, the second layer being present outside the first layer; and a third layer comprising a second conductive material and a polymer, the third layer being present outside the second layer. The negative electrode material provided in the present application can reduce the volume expansion of the electrochemical device after cycling, and improve the cycling performance of the electrochemical device.
Resumen de: WO2026000807A1
A modified current collector base film, a preparation method therefor, and a use thereof. The modified current collector base film comprises a polymer film and a modified polyurea coating provided on the surface of at least one side of the polymer film. The polymer film is modified using the modified polyurea coating, thereby improving the polarity of the polymer film, enabling the polymer film to be in closer contact with a conductive layer, and increasing adhesion. In addition, the modified polyurea coating has excellent stiffness, strength, and high strain rate sensitivity, thereby enabling the polymer film to have improved mechanical properties. Moreover, the modified polyurea coating helps the polymer film resist erosion by electrolytes and high-temperature environments. In summary, the provided modified current collector base film has excellent mechanical properties, thermal stability, and adhesion, is not easily damaged during the subsequent preparation process of composite current collectors, and can facilitate the promotion and use of composite current collectors. Batteries prepared on this basis have excellent physical and chemical properties and safety performance.
Resumen de: WO2026000782A1
The present application belongs to the technical field of power batteries. Disclosed is a power battery system, comprising a battery box, a battery module, and a bearing structure. A top wall of the battery box is provided with at least one frame groove having two ends penetrating therethrough. The battery box is internally provided with an accommodating space. The at least one frame groove divides the accommodating space into at least two first spaces and at least one second space that are in communication with one another. For each frame groove, the two ends of the frame groove are connected, corresponding first spaces are respectively distributed on both sides in the width direction of the groove, and corresponding second spaces are distributed on one side of the frame groove in the depth direction of the groove. The battery module comprises at least one first battery module and at least one second battery module. A corresponding first battery module is provided in each first space, and a corresponding second battery module is provided in each second space. The bearing structure is located in the first space and the second space, and the bearing structure supports and blocks the at least one first battery module and the at least one second battery module.
Resumen de: WO2026000744A1
The present application discloses an energy storage system, comprising: an energy storage unit, an electrical device, and a thermal management unit. The thermal management unit comprises a refrigeration unit. The refrigeration unit comprises: a power apparatus, a condenser, and a first heat exchanger. The power apparatus is used for absorbing heat from the electrical device to provide a gaseous heat exchange medium so as to drive the refrigeration unit to operate; the condenser is used for condensing the gaseous heat exchange medium into a liquid heat exchange medium; and the first heat exchanger is used for absorbing heat from the energy storage unit by means of the liquid heat exchange medium. The thermal management unit has a first mode; and in the first mode, the power apparatus, the condenser, and the first heat exchanger are sequentially communicated end to end. The energy storage system implements heat dissipation for the energy storage unit and the electrical device. The power apparatus absorbs the heat from the electrical device to provide a gaseous heat exchange medium so as to drive the refrigeration unit to operate, without requiring additional heat or power, thereby reducing thermal management energy consumption of the energy storage system.
Resumen de: WO2026000537A1
The present invention relates to the technical field of batteries, and provides a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electric device. In the positive electrode active material, the content change of Fe2+ satisfies Δn≥0.1, wherein Δn=n1-n2, where n1 is the content of Fe2+ in the positive electrode active material before charging; n2 is the content of Fe2+ in the positive electrode active material when the material is charged to 4.0 V; and the content of Fe2+ = the amount of substance of Fe2+ in the positive electrode active material/(the amount of substance of Fe2+ in the positive electrode active material + the amount of substance of Fe3+ in the positive electrode active material). Therefore, by means of the positive electrode active material, a battery loaded with same is allowed to have a good energy density.
Resumen de: WO2026000612A1
An energy storage container (1), comprising: a container body (10), and a top cover (11) and a bottom cover (12), which are arranged opposite each other, wherein the container body (10) is provided with a battery compartment (14), and the top cover (11) and the bottom cover (12) respectively surround the top and bottom of the battery compartment (14); a plurality of battery clusters (20), which are placed in the battery compartment (14); and a fire-fighting system (30), which comprises a plurality of fire-fighting devices (31), wherein the plurality of fire-fighting devices (31) are evenly distributed between the plurality of battery clusters (20) and the top cover (11).
Resumen de: WO2026000391A1
A battery cell, a battery device, and an electric device. The battery cell comprises an electrode assembly and an electrolyte. The electrode assembly comprises a first electrode sheet and a second electrode sheet. The first electrode sheet and the second electrode sheet each comprise a coating portion and tabs. The coating portion is coated with an active material layer, and the tabs are not coated with the active material layer. One of the first electrode sheet and the second electrode sheet is a positive electrode sheet, and a positive electrode active material of the positive electrode sheet comprises lithium-containing phosphate having an olivine structure. The coating portion of the first electrode sheet comprises first straight sections, and the coating portion of the second electrode sheet comprises second straight sections. The first straight sections and the second straight sections are stacked in the thickness direction of the electrode assembly. The ratio of the number of the tabs of the first electrode sheet to the number of the first straight sections of the first electrode sheet is 0.5 to 2. An organic solvent of the electrolyte comprises a linear carboxylic ester solvent. The mass content of the linear carboxylic ester solvent in the organic solvent is 8% to 90%. The present application can improve the use reliability and cycle performance of battery cells.
Resumen de: WO2026001618A1
Disclosed in the present application are a secondary battery and an electronic device. The secondary battery comprises a packaging bag, an electrode assembly, a first tab and a first electrode terminal, wherein the packaging bag comprises a main body portion configured to accommodate the electrode assembly, and a top sealing portion connected to the main body portion; the electrode assembly comprises a first electrode plate, which comprises a first current collector; the first electrode terminal passes through the top sealing portion in a first direction and extends out of the packaging bag; and the first tab comprises a third extension section, a first bending section, a first extension section, a second bending section and a second extension section, which are connected in sequence, the third extension section being welded to the first current collector, the second extension section being connected to the first electrode terminal, and in a second direction perpendicular to the first direction, the first bending section being bent in a direction away from the top sealing portion, and the second bending section being bent in a direction towards the top sealing portion. In the present application, the first tab can extend from the first current collector to the first electrode terminal along the longest path, such that the drop performance is improved.
Resumen de: WO2026001615A1
The present application relates to a battery cooling structure, a battery pack, a cooling system, and a vehicle. The battery cooling structure comprises: a main cooling plate, a substrate, and a jumper plate; the main cooling plate is provided with a main flow channel; the substrate is provided with a jumper hole, and the jumper hole runs through the substrate in the thickness direction of the substrate; and the jumper plate is provided with a secondary flow channel. The substrate is arranged between the main cooling plate and the jumper plate, and the jumper hole enables the main flow channel and the secondary flow channel to be communicated.
Resumen de: WO2026001543A1
Provided in the present application are a negative electrode material, a manufacturing method therefor, and an electrochemical apparatus. The negative electrode material comprises: an inner core, the inner core comprising silicon-based particles; a first layer comprising carbon, the first layer being outside the inner core; a second layer comprising an inorganic lithium salt, the second layer being outside the first layer; and a third layer comprising a conductive material and a polymer, the third layer being outside the second layer. The negative electrode material provided in the present application can effectively alleviate fragmentation and pulverization of silicon-carbon negative electrode materials during cycling and inhibit the growth of SEI films, thereby reducing volume expansion of electrochemical apparatuses after cycling, and improving the cycling performance of electrochemical apparatuses.
Resumen de: WO2026001563A1
The present disclosure provides a negative electrode sheet, a cell, a battery, and an electric device. The negative electrode sheet comprises: a negative electrode current collector; a first active layer, arranged on at least one side surface of the negative electrode current collector, a negative electrode active material in the first active layer comprising first graphite and silicon-carbon; and a second active layer, arranged on the side of the first active layer away from the negative electrode current collector, a negative electrode active material in the second active layer comprising second graphite and silicon monoxide. The particle size of the silicon-carbon ranges from 4 μm to 7 μm. The active layers can be prevented from peeling off and falling off from the negative electrode current collector, ensuring that the battery formed from the negative electrode sheet has a high energy density, and enabling the negative electrode sheet to have good electrochemical performance and electrode sheet stability.
Resumen de: WO2026000577A1
Disclosed are a method and system for returning a battery module. The method comprises: in response to a module return event, a programmable logic controller controls a code scanning assembly to perform code scanning processing on a plurality of cells in a repaired battery module, so as to obtain cell information of the plurality of cells; a first production execution system of a production line acquires module information of the repaired battery module on the basis of the cell information; the first production execution system performs verification processing on the plurality of pieces of cell information on the basis of the module information to obtain a first verification result for the plurality of cells, and sends the module information to a second production execution system of a factory; the second production execution system performs state verification processing on the repaired battery module on the basis of the module information of the repaired battery module to obtain a second verification result for the repaired battery module; and the programmable logic controller determines, on the basis of the first verification result and the second verification result, whether to control return of the repaired battery module.
Resumen de: WO2026000578A1
A device (10) for accelerating rebound of an electrode sheet, comprising a vibration mechanism (1) and a plurality of conveying rollers (2), wherein the plurality of conveying rollers (2) are used for conveying an electrode sheet (200); and the vibration mechanism (1) is arranged between two adjacent conveying rollers (2) in the conveying direction of the electrode sheet (200), the vibration mechanism (1) is used for vibrating the electrode sheet (200), and the vibration mechanism (1) can vibrate the portion of the electrode sheet (200) located between the two adjacent conveying rollers (2), such that as the conveying rollers (2) convey the electrode sheet (200), vibration of the electrode sheet (200) is realized. The device (10) for accelerating rebound of an electrode sheet can accelerate the release of internal stress of the electrode sheet (200) under the vibration action of the vibration mechanism (1), so as to accelerate the rebound of the electrode sheet (200), thereby improving the production efficiency of the electrode sheet (200). Further provided is an electrode sheet processing apparatus (100).
Resumen de: WO2026000771A1
Provided in the present application are a battery cell, a battery and an electric device. The battery cell comprises: a casing, an electrode assembly, an end cover assembly and a deformable member, wherein the electrode assembly is arranged in the casing; the end cover assembly closes an opening of the casing in a first direction, and comprises a cover plate and an electrode terminal; the electrode terminal comprises a terminal plate and poles; the terminal plate is configured to electrically connect to an external device; the poles are configured to electrically connect to the electrode assembly; and the terminal plate is electrically connected to at least two poles of the same polarity. The deformable member is connected to the cover plate and can deform to come into contact with the terminal plate, and the deformable member is arranged between at least two poles of the same polarity. Among the battery cell, the battery and the electric device provided in the present application, the battery cell can reduce the probability of poor contact between components during overcharge protection, thereby improving the reliability of the battery cell.
Resumen de: WO2026000399A1
A battery (2) and an electrical apparatus. The battery (2) comprises a plurality of battery cells (10) and a first busbar component (30a). The plurality of battery cells (10) are arranged along the thickness direction of each battery cell (10), and the battery cells (10) each comprise a housing (12) and an electrode assembly (11) accommodated in the housing. The expansion pressure of each battery cell (10) in the thickness direction is 0.5 MPa to 2.4 MPa. The first busbar component (30a) is electrically connected to at least two battery cells (10) arranged in the thickness direction, and the first busbar component (30a) is of a multi-layer structure. The electrode assembly comprises a positive electrode plate (111), a negative electrode plate (112), and a separator (113) located between the positive electrode plate (111) and the negative electrode plate (112). The positive electrode plate (111) comprises a positive electrode current collector (1111) and a positive electrode film layer (1112) provided on at least one side of the positive electrode current collector (1111). The positive electrode film layer (1112) comprises a positive electrode active material. The positive electrode active material comprises a lithium-containing phosphate having an olivine structure. The negative electrode plate (112) comprises a negative electrode current collector (1121) and a negative electrode film layer (1122) provided on at least one side of the negative electrode current collector (1121
Resumen de: WO2026000103A1
The present application discloses a cylindrical battery cell, a battery, and an electric device. The cylindrical battery cell comprises a casing and an electrode assembly. The cylindrical battery cell has a diameter greater than or equal to 40 mm. At least part of the electrode assembly is accommodated in the casing. The electrode assembly comprises a positive electrode sheet, a negative electrode sheet, and a separator. The positive electrode sheet, the negative electrode sheet, and the separator are wound. The separator separates the positive electrode sheet from the negative electrode sheet. A negative electrode active material of the negative electrode sheet comprises at least one of a silicon element and a carbon element. A gap is formed between the positive electrode sheet and the negative electrode sheet, the gap extends in a winding direction of the electrode assembly, and the radial size of the gap is 5-60 μm.
Nº publicación: WO2026000096A1 02/01/2026
Solicitante:
NINGDE AMPEREX TECH LIMITED [CN]
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Resumen de: WO2026000096A1
Provided are a secondary battery and an electronic device. The secondary battery comprises a packaging pouch, an electrode assembly and a first conductive plate. The packaging pouch comprises an accommodating part and a first sealing edge. The electrode assembly is disposed in the accommodating part and comprises a first electrode sheet. The first electrode sheet comprises a first current collector and a first active material layer. The first conductive plate is electrically connected to the first current collector and extends out of the packaging pouch from the first sealing edge. The direction in which the first conductive plate extends out of the electrode assembly is a first direction; the first electrode sheet comprises a first edge and a second edge which are arranged opposite each other in the first direction. The first edge is closer to the first sealing edge than the second edge, and the first electrode sheet is provided with at least one first recess at the second edge. The direction of thickness of the electrode assembly is a second direction; the first recess penetrates the first current collector and the first active material layer in the second direction. The projection of the at least one first recess in the second direction forms a projected area; the width of the projected area is W1, and the width of the electrode assembly is W0, where 15%≤W1/W0≤40%. The secondary battery has relatively high reliability and safety.
BOPI
Sede Electrónica
