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1255
resultados
Última actualización
10/02/2026 [07:21:00]
Resultados 650 a 675 de 1255
Resumen de: US20260031329A1
An electrochemical apparatus includes an electrode assembly, a positive electrode tab, and a negative electrode tab. In the electrode assembly, a separator is disposed between a positive electrode plate and a negative electrode plate. The positive electrode tab is connected to the positive electrode plate, and the negative electrode tab is connected to the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer disposed on its surface. The number a of the positive electrode tabs and the number b of layers of the positive electrode plate satisfy the relationship 0.25≤a/b≤1.25. A molar percentage X of nickel in the positive electrode active material satisfies the relationship X≥60%. A thickness h1 of the positive electrode active material layer satisfies: 10 μm≤h1≤30 μm.
Resumen de: US20260031330A1
An energy storage device according to one aspect of the present invention includes: a negative electrode including a negative active material layer; and a positive electrode, in which the negative active material layer contains negative active material particles and a cellulose derivative, an average circularity of the negative active material particles is 0.60 or less, and a peak top molecular weight of the cellulose derivative is 2,800,000 or more.
Resumen de: US20260031324A1
A method for extending battery cycle life of Li-ion battery includes executing a fast formation protocol on a Li-ion battery cell (cell) such that an induced Li loss shifts an electrode-specific utilization range with a lithiation level of the positive electrode decreased to be less than or equal 94% as determined via differential voltage analysis. Also, the fast formation protocol of the cell includes charging the cell to a maximum charging voltage of the cell in less than 2 hours during a first formation cycle and avoiding a kinetically limited region of the positive electrode.
Resumen de: WO2026023669A1
Provided is a battery including a positive electrode, a negative electrode disposed apart from the positive electrode, a separator sandwiched between the positive electrode and the negative electrode, and an electrolyte. The electrolyte may contain a nitrate, alkaline earth metal salt, or alkali metal salt at least including lithium nitrate and being in the amount of 0.1% to 50% with respect to the total mass of the electrolyte, and 1% to 40% of hydrofluoroether with respect to the total mass of the electrolyte. The electrolyte may contain 10% to 70% of fluoroethylene carbonate with respect to the total mass of the electrolyte.
Resumen de: WO2026023997A1
According to exemplary embodiments, a battery pack is provided. The battery pack comprises: a pack housing including a base plate and a sidewall; a plurality of battery cell assemblies on the base plate; a lead coupled to the sidewall of the pack housing; and a foaming device configured to discharge a foamed layer into an inner space defined by the pack housing and the lead.
Resumen de: WO2026024026A1
A battery cell according to the present invention comprises: an electrode assembly in which a cathode, an anode, and a separator are stacked in the stacking direction; a cell case for accommodating the electrode assembly; and an insulation member which is disposed on one side other than two side surfaces of the electrode assembly of the cell case in the stacking direction, and which includes an insulation material, wherein the cell case includes a contact unit which is formed at a position different from the position at which the insulation member is disposed, and with which a cooling member is in contact.
Resumen de: WO2026024047A1
According to an embodiment of the present invention, an electronic device comprises: a housing forming the exterior; and a battery disposed inside the housing. The battery includes: a battery housing having an opening; a gasket disposed in the opening of the battery housing and defining an inner space with the battery housing; and an electrode assembly disposed in the inner space. The electrode assembly includes: first electrode plates and second electrode plates, which are sequentially arranged in alternation with each other and have different polarities; first electrode tabs extending from the first electrode plates; second electrode tabs extending from the second electrode plates; a first electrode lead electrically connected to the first electrode tabs; and a second electrode lead electrically connected to the second electrode tabs. The first electrode lead and the second electrode lead may pass through the gasket and extend outward from the inner space of the battery housing.
Resumen de: WO2026024030A1
Provided is a cathode active material in the form of secondary particles formed by aggregation of primary particles comprising a lithium transition metal composite oxide. The lithium transition metal composite oxide comprises lithium, nickel, and manganese, and additionally comprises boron as a doping element, wherein, in the lithium transition metal composite oxide, a molar content of manganese is greater than a molar content of nickel. The primary particles have an average particle size of 200-800 nm, and the secondary particles have a particle size (D50) of 0.5-3.0 ㎛. As the cathode active material contains a trace amount of boron as a doping element, excellent flowability may be exhibited despite a small particle size.
Resumen de: WO2026020461A1
The present application discloses a secondary battery and an electronic device. The secondary battery comprises a housing, an electrode assembly, and a first bonding member. The electrode assembly comprises a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate. The first electrode plate, the second electrode plate, and the separator are wound to form a wound structure. The outermost electrode plate of the electrode assembly is the first electrode plate. The outermost ring of the first electrode plate is sequentially provided with a first coating area and a first empty foil area. A part of the first electrode plate is recessed to form a first recess. The first bonding member is bonded to the outermost ring of the first electrode plate. The first bonding member bonds a part of a first active material layer in the first coating area and a part of a first current collector in the first empty foil area. The first bonding member covers the first recess along a thickness direction of the first electrode plate. In the secondary battery, the provision of the first recess facilitates the release of stress generated at least in part by the expansion of the first electrode plate or the second electrode plate. The first bonding member can maintain the structure of the first recess during winding.
Resumen de: WO2026020451A1
A battery (2) and an electric apparatus. The battery (2) comprises a battery cell (7) and a metal component (6). The battery cell (7) comprises a first outer wall face (701), and the first outer wall face (701) is provided with a weak portion (702). The metal component (6) is arranged opposite the first outer wall face (701), wherein the first outer wall face (701) is provided with a first insulating protective layer (703), and the first insulating protective layer (703) is connected to the first outer wall face (701); and the first insulating protective layer (703) covers at least part of the weak portion (702). A weak portion (702) is provided, such that a battery cell (7) can tear at the weak portion (702), so as to discharge substances from the battery cell (7), thereby reducing the temperature and air pressure inside the battery cell (7), and thus improving the reliability of the battery cell (7) during operation. Moreover, providing a first insulating protective layer (703) on at least part of the surface of the weak portion (702) to form insulating protection reduces the risk of short circuits caused by lap contact between the torn weak portion (702) and the metal component (6), thereby improving the operation stability of batteries (2).
Resumen de: US20260031353A1
A hard carbon material contains micropores and ultramicropores, a pore diameter of the micropores is less than 2 nm, a pore diameter of the ultramicropores is less than 0.7 nm, a pore volume of the micropores accounts for 95% to 100% of a total pore volume, a pore volume of the ultramicropores ranges from 0.01 cm3/g to 0.2 cm3/g, and the pore volume of the ultramicropores accounts for 80% to 99% of the total pore volume. The negative electrode active material provided in this application exhibits a stable low-potential plateau, high specific capacity, and high reversible capacity, and applying the negative electrode active material of this application to secondary batteries enhances the energy density of secondary batteries while improving their cycle performance.
Resumen de: US20260031349A1
The present disclosure provides a positive electrode active material, a sodium-ion battery and a preparation method therefor and an electrical device, relating to the technical field of secondary batteries. The positive electrode active material includes a polyanionic material and Na4Fe3(PO4)2P2O7, a mass of the Na4Fe3(PO4)2P2O7 being 40% to 60% of a mass of the positive electrode active material. In the present disclosure, the polyanionic material and Na4Fe3(PO4)2P2O7 are compounded as the positive electrode active material. The two materials cooperate with each other, so that the positive electrode active material has a high diffusion coefficient of Na+, a high energy density and excellent cycle stability at a low temperature, which is beneficial to improving the low-temperature service performance of the sodium-ion battery.
Resumen de: US20260031359A1
A method for producing binder-coated active battery material agglomerations includes agitating a volume of a binder-solvent solution across two or more steps with a particulate mixture including active battery material particles. The binder-solvent solution has a solubility limit for a mixture of binder material particles within a first solvent solution at a first set of environmental parameters. The particulate mixture is subjected to a second set of environmental parameters across two or more steps which reduces the solubility limit to generate a powder mixture of binder-coated active battery material agglomerations.
Resumen de: US20260031351A1
The present disclosure provides a dispersible graphene platelet and a method of making same. The structure of the graphene platelet 10 comprises a base layer 1 of graphene on which at least one discontinuous layer 2, 3, 4 of graphene is stacked, with each layer of graphene above the base layer having a smaller surface area than the layer it is stacked upon. The edges of the base layer and the discontinuous layers stacked upon it are all at least partially functionalised 5, providing a structure with graphene-like properties owing to the base layer and relatively high dispersibility owing to the increased amount of functionalised groups on each platelet. The platelets may be used for a number of applications, for example in the production of electrodes or composite materials.
Resumen de: US20260031334A1
An electrochemical device includes a positive electrode, a negative electrode, a separator, and a lithium-ion conductive electrolyte. The positive electrode includes a current collector, and a mixture layer which is supported on the current collector and into which anions are reversibly doped. The negative electrode includes a negative electrode current collector, and a mixture layer which is supported on the current collector and into which lithium ions are reversibly doped. A length L1 of the negative electrode mixture layer in a first direction is longer than a length L2 in a second direction orthogonal to the first direction. A state of charge of two end regions adjacent to both ends of the negative electrode mixture layer in the second direction is X %, a state of charge of a center region of the negative electrode mixture layer in the second direction is Y %, and X<Y is satisfied.
Resumen de: US20260031323A1
An electrode sheet thermal-lamination adjustment mechanism includes a feeding assembly, a deviation correction assembly, and a visual recognition assembly. The feeding assembly includes a feeding platform. The incoming material strip includes a separator strip and a first electrode sheet disposed within the separator strip. The deviation correction assembly includes a first deviation correction member, a second deviation correction member, and a third deviation correction member. The second deviation correction member and the third deviation correction member are sequentially disposed along the X direction. The X direction is parallel with the conveying direction of the second electrode sheet. The Y direction is perpendicular to the X direction. The X direction and the Y direction are in the same plane. The visual recognition assembly faces the feeding platform. The visual recognition assembly is configured to perform visual recognition on the second electrode sheet on the feeding platform.
Resumen de: US20260031328A1
A positive electrode includes a positive electrode current collector and a positive electrode active material layer on the positive electrode current collector and including a positive electrode active material and a binder. The positive electrode active material includes a first positive electrode active material including a lithium iron phosphate-based compound and a second positive electrode active material including a lithium nickel-based composite oxide. The binder includes a first fluorine-based binder not including a polar functional group, and a second fluorine-based binder including a polar functional group. A weight ratio of the first fluorine-based binder to the second fluorine-based binder is in a range of about 1:1 to about 4:1. The rechargeable lithium battery including the positive electrode may exhibit high initial charge/discharge capacity and efficiency even under high voltage driving conditions, and can exhibit long cycle-life characteristics.
Resumen de: US20260031642A1
A method for dynamically adjusting power, a battery management system, a device, a medium, and a vehicle are disclosed. The method for dynamically adjusting power includes acquiring power information, calculating a discharge power integral value within a preset time threshold, calculating a discharge energy according to the power information, and determining whether it is necessary to adjust the maximum allowable output power from first time discharge power to second time discharge power, or to adjust the maximum allowable output power from the second time discharge power to the first time discharge power based on the discharge power integral value and the discharge energy.
Resumen de: WO2026023761A1
The present invention relates to a microporous polyolefin film and, more specifically, to a microporous polyolefin film, a method for manufacturing same, and a secondary battery comprising same, wherein the polyolefin comprises an alpha-olefin-derived unit and, with respect to the alpha-olefin-derived unit, the average pore size of the microporous film is 10 nm to 45 nm depending on the number of short chain branches (SCBs) per 1,000 carbon atoms in the polyolefin backbone.
Resumen de: WO2026023391A1
Problem To provide a load application device and a power storage device that improve the durability and energy consumption efficiency of an all-solid battery. Solution A load application device 1 applies a load to a layered structure 2 of an all-solid battery. The load application device 1 is characterized by comprising a support 10, an elastic part 11 that is supported from the support 10 and generates elastic force by elastic deformation, and a force transmission part 12 that contacts the elastic part 11 and the layered structure 2, separates the force in the layering direction of the layered structure 2 from at least a portion of the elastic force inputted from the elastic part 11 and transmitted in a force transmission direction that varies in response to the expansion and contraction of the layered structure 2, and transmits the separated force to the layered structure 2.
Resumen de: WO2026023715A1
A riveting device for a cylindrical battery is disclosed. The riveting device for a cylindrical battery includes a guide pin to improve assembly defects when assembling a rivet with a gasket and when assembling a rivet-gasket assembly with a can. The riveting device for a cylindrical battery according to an embodiment of the present invention arranges the central axis line of the gasket, the central axis line of the rivet, the central axis line of the can, and the central axis line of the guide pin on the same line when assembling the rivet with the gasket and when assembling the rivet-gasket assembly with the can.
Resumen de: WO2026023750A1
The present invention relates to a device for manufacturing an all-solid-state battery, and a method for manufacturing an all-solid-state battery using same. More specifically, the device comprises: a main conveyor; a first electrode supply unit disposed at the entrance of the main conveyor and for supplying electrode webs to the main conveyor; a second electrode supply unit disposed above the main conveyor and for depositing electrode sheets onto the electrode webs; a pressing conveyor disposed on top of the main conveyor and engaged with the main conveyor to transfer the electrode webs and the electrode sheets in a first direction; and a hot pressing unit connected to the main conveyor and the pressing conveyor, wherein the hot pressing unit can press the electrode sheets and the electrode webs interposed between the main conveyor and the pressing conveyor.
Resumen de: WO2026023773A1
The present invention relates to a sulfide-based solid electrolyte, comprising a compound having an argyrodite-type crystal structure and represented by chemical formula 1:
Resumen de: WO2026020713A1
Provided in the present application are a cobalt-free nickel-manganese binary precursor material, and a preparation method therefor and the use thereof. The preparation method comprises the following steps: mixing a nickel-manganese metal source solution, a precipitant solution and a first complexing agent solution, and carrying out a nucleation stage of a coprecipitation reaction; after the nucleation stage is finished, adjusting the pH value of the coprecipitation reaction, replacing the first complexing agent solution with a second complexing agent solution containing an additive, and carrying out a growth stage of the coprecipitation reaction, so as to obtain a precursor slurry; and washing and drying the precursor slurry, so as to obtain the cobalt-free nickel manganese binary precursor material, wherein a washing solution used in washing comprises a reducing agent. In the preparation method of the present application, the additive is added in the growth stage of the coprecipitation reaction to control the growth of crystals, and the reducing agent is added in the washing stage of the post-treatment to inhibit the precipitation of a manganese oxide, thereby enabling the obtained precursor to have a better crystallinity and a lower precipitation amount of the manganese oxide.
Nº publicación: WO2026020812A1 29/01/2026
Solicitante:
BYD COMPANY LTD [CN]
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Resumen de: WO2026020812A1
An electric device. The electric device comprises a battery, the battery comprises a battery cover plate assembly, and the cover plate assembly comprises a cover plate and a cap. A cavity is defined between the cap and the cover plate, the cavity is configured to accommodate a tab and/or an electrode sheet of a battery cell, and the cap is provided with a scoring groove for preventing explosion.
BOPI
Sede Electrónica
