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1408
resultados
Última actualización
17/12/2025 [07:14:00]
Resultados 1175 a 1200 de 1408
Resumen de: US2025372620A1
This non-aqueous electrolyte secondary battery comprises a negative electrode. The negative electrode has a negative electrode mixture layer formed on the surface of a negative electrode current collector. The negative electrode mixture layer has a first negative electrode mixture layer and a second negative electrode mixture layer. The first negative electrode mixture layer and the second negative electrode mixture layer include a negative electrode active material. The negative electrode active material in the first negative electrode mixture layer has two negative electrode active materials M1 and M2 of different volume-average particle size. The ratio (A2/A1) of the volume-average particle size (A2) of the negative electrode active material M2 to the volume-average particle size (A1) of the negative electrode active material M1 is in the range of 0.16-0.5.
Resumen de: US2025372788A1
A housing, a battery, and an electric device, where the housing includes a base plate, a mounting beam, and a module beam, the base plate has a first side surface and a second side surface opposite to each other in a thickness direction, a reinforcement structure is provided on the base plate, the module beam is disposed on the first side surface, the mounting beam is disposed on the second side surface, and the reinforcement structure is configured to connect to the mounting beam and/or the module beam.
Resumen de: US2025372819A1
A battery cell, a battery, and an electric apparatus. The battery cell includes: a casing, having a first wall; a pressure relief mechanism, arranged on the first wall; an electrode assembly, accommodated in the casing; and a supporting member, arranged opposite to the pressure relief mechanism and configured to limit the electrode assembly from moving toward the first wall.
Resumen de: US2025372821A1
The present application provides a separator, a battery cell, a battery and an electrical apparatus. The separator includes a separator body and a polymer layer arranged on at least one surface of the separator body. The polymer layer includes an ether polymer. The ether polymer is made into a sheet-like structural body; the sheet-like structural body is subjected to a dynamic frequency scanning test at (Tm+20)° C. to obtain an elastic modulus G′-loss modulus G″ curve, and the elastic modulus G′-loss modulus G″ curve has a slope of K, where 1
Resumen de: US2025372787A1
A box, a battery, and an electric device. The box includes a bottom plate and a mounting beam, where the bottom plate includes an outer wall surface, the mounting beam includes a connecting portion, the connecting portion is configured to be connected to the bottom plate, and at least a portion of the connecting portion is in contact with the outer wall surface.
Resumen de: US2025372817A1
A separator, a battery cell, a battery, and an electric device are described. The separator comprises a porous base material and a ferroelectric coating located on at least one surface of the porous base material. The ferroelectric coating comprises a ferroelectric material. The ferroelectric material comprises an inorganic ferroelectric and a ferroelectric polymer. The ferroelectric polymer comprises polyvinylidene fluoride and a copolymer thereof, the ferroelectric polymer comprises β-phase polyvinylidene fluoride, and the content of the β-phase polyvinylidene fluoride in the ferroelectric polymer is greater than or equal to 60%. The separator can slow the continuous growth of dendrites in a direction perpendicular to an electrode sheet, reduce internal short circuits of the battery and improve the reliability of the battery, and can further improve the coulombic efficiency and rate performance of the battery.
Resumen de: US2025372690A1
A heating press for pressing a folded portion formed on a terrace disposed on at least a portion of a circumference of an electrode-accommodating portion of a battery cell, including a first press including a first pressing surface pressing a first surface of the folded portion; and a second press including a second pressing surface pressing a second surface of the folded portion and a protruding pressing surface pressing an inner side region of the terrace, wherein the protruding pressing surface protrudes from the second pressing surface toward the first pressing surface and presses the inner side region together with the first pressing surface, and the inner side region is located between the folded portion and the electrode-accommodating portion, is disclosed.
Resumen de: US2025372658A1
An electrode plate includes a substrate, an active material layer on the substrate, a hydrophobic coating layer on at least an edge of the active material layer, the hydrophobic coating layer having a hydrophobic functional group, and an insulating portion at a boundary between the active material layer and the substrate, the insulating portion covering at least a part of a side surface of the active material layer below the hydrophobic coating layer.
Resumen de: US2025372659A1
A positive electrode of a secondary battery includes: a positive electrode active material layer, which in turn includes a positive electrode active material, a conductive material, a binder, and a positive electrode additive. The positive electrode additive includes substituents with a cyclic sulfonic ester (sultone) or cyclic sulfate structure, so that the oxygen release from a positive electrode active material is suppressed, which improves the structural stability of the positive electrode active material.
Resumen de: US2025372630A1
The present disclosure relates to an electrode for a rechargeable lithium battery and a rechargeable lithium battery including the electrode. The electrode for a rechargeable lithium battery includes a current collector, and an active material layer on the current collector. The current collector includes a base having a surface on which an irregular pattern is formed and a carbon material- and binder-containing layer laminated on the surface. The active material layer is on the carbon material- and binder-containing layer.
Resumen de: US2025372628A1
Disclosed are a positive electrode, a preparation method thereof, and a rechargeable lithium battery including the positive electrode. The positive electrode includes a positive electrode current collector, a positive electrode active material layer on the positive electrode current collector, and a positive electrode coating layer between the positive electrode current collector and the positive electrode active material layer. The positive electrode coating layer includes a graphite-based material, a phosphorus-based extinguishing agent, and a binder, and the positive electrode coating layer includes about 1 part by weight to about 45 part by weight of the phosphorus-based extinguishing agent based on 100 parts by weight of a total of the graphite-based material and the phosphorus-based extinguishing agent.
Resumen de: US2025372625A1
A negative electrode for nonaqueous electrolyte secondary batteries comprises a negative electrode mixture layer and is characterized in that: the negative electrode mixture layer comprises a first negative electrode mixture layer, and a second negative electrode mixture layer; the first negative electrode mixture layer contains graphite particles A; the second negative electrode mixture layer contains the graphite particles A and graphite particles B which have a lower internal void fraction than the graphite particles A; the second negative electrode mixture layer comprises a first region and a second region; the content ratio of the graphite particles B in the first region is higher than the content ratio of the graphite particles in the second region; and the ratio (T1/T2) of the thickness (T1) of the first negative electrode mixture layer to the thickness (T2) of the second negative electrode mixture layer is within the range of 0.66 to 4.00.
Resumen de: US2025372749A1
A solid-state battery includes two or more stacked battery units. Each battery unit includes a first current collector, a first active material layer, a solid electrolyte layer, a second active material layer, a second current collector, a second active material layer, a solid electrolyte layer, a first active material layer, and a first current collector, which are stacked in this order. The two or more stacked battery units include an adhesive portion that adheres first current collectors opposed to each other in a stacking direction between adjacent battery units. A peel strength of the adhesive portion is less than a peel strength in the battery unit.
Resumen de: US2025372838A1
Disclosed is a battery capable of improving connectivity between a terminal and a current collector part while improving structural efficiency around them. The battery of the present disclosure includes an electrode laminate, a current collector part, and a terminal. The electrode laminate is electrically connected to the terminal via the current collector part. The terminal includes a base and a protrusion. The base has a first surface facing the electrode laminate and a second surface opposite the first surface. The protrusion protrudes from the base toward the electrode laminate. The protrusion includes a first protrusion and a second protrusion. The first protrusion has a third surface facing the second protrusion. The second protrusion has a fourth surface facing the first protrusion. The current collector part is in contact with one or both of the first surface and the third surface. The second protrusion is welded to the base.
Resumen de: US2025372652A1
Provided is a binder composition for an all-solid-state secondary battery that can reduce internal resistance of an all-solid-state secondary battery while also imparting excellent adhesiveness to a functional layer for an all-solid-state secondary battery. The binder composition for an all-solid-state secondary battery contains a copolymer including a nitrile group-containing monomer unit and a solvent. The solvent includes an ester solvent having a carbon number of 6 or more. Proportional content of the nitrile group-containing monomer unit in the copolymer is 10 mass % to 22 mass % when all repeating units in the copolymer are taken to be 100 mass %. The copolymer has a tetrahydrofuran-insoluble fraction of 0.5 mass % to 3 mass %, and a copolymer solution obtained when the copolymer is dissolved in the solvent such that concentration of the copolymer is 8 mass % has a haze of 30% to 80%.
Resumen de: US2025372810A1
Disclosed is a Li-ion battery module for preventing thermal runaway spreading, used in a chassis, comprising: a battery pack, including a plurality of cells; a thermally conductive plastic component having a plurality of openings; a separating plate, wherein an air flow path is formed between the separating plate and the chassis, and a plurality of vent holes of the separating plate are connected with the air flow path; a flame-retardant expandable member disposed between the thermally conductive plastic component and the separating plate; and a flow-limiting member, having a circuitous flow path so that high-temperature substances released by the cells in thermal runaway will pass through the openings, causing the flame-retardant expandable member to expand and block the opening, thereby preventing flames and sparks from spreading to the exterior of the chassis, and ensuring the safety of surrounding equipment and personnel.
Resumen de: US2025372815A1
A battery cell, a battery, and an electric apparatus are disclosed. The battery cell includes an electrode assembly and an electrolyte. The electrode assembly comprises a first electrode plate, a second electrode plate, and a separator. The first and second electrode plates have opposite polarities, and the separator is arranged between them. At least one of the first electrode plate, second electrode plate, and separator includes a lyophilic polymer. The battery cell satisfies the following relationship:0.01%≤y(p1*v1+p2*v2+p3*v3)≤23%,where p1, p2, and p3 represent the porosity of the first electrode plate, second electrode plate, and separator, respectively; v1, v2, and v3 represent their respective total volumes (in μm3); and y represents the mass (in g) of free electrolyte in the battery cell. This configuration helps improve electrolyte retention and enhances the performance of the battery cell.
Resumen de: US2025372782A1
A battery pack frame and a battery pack are provided by the present disclosure. The battery pack includes a front frame, a first connecting frame, a rear frame, and a second connecting frame connected in sequence from end to tail. Each of the front frame and the rear frame is an integrated stamping molding structure. Each of the first connecting frame and the second connecting frame is an integrated roll molding structure.
Resumen de: US2025373078A1
The utility model discloses a multifunctional mobile power pack with a tracking function, including a mobile power pack body and a card holder assembly. A wireless charging module and a position tracking module are disposed in the mobile power pack body, and the card holder assembly is rotatably connected to the mobile power pack body. In the utility model, as the card holder assembly for placing important cards such as bank cards is disposed on the mobile power pack body, the mobile power pack body and the cards are placed together and convenient for the user to carry. The wireless charging module of the mobile power pack body supplies power to a phone and includes a built-in position tracking module that can quickly locate the mobile power pack in case of loss.
Resumen de: US2025373027A1
A charging method includes: detecting that a first electronic device establishes a charging connection to a second electronic device; obtaining a charging request of the second electronic device, where the charging request includes a requested charging voltage and a requested charging current; determining that the first electronic device is in a first running state, and using the requested charging voltage and the requested charging current as a power supply voltage and a power supply current that are provided for the second electronic device; and determining that the first electronic device is in a second running state, and determining, based on the second running state and the charging request, a first power supply voltage and a first power supply current that are provided for the second electronic device.
Resumen de: US2025372626A1
Provided are a composite cathode active material for lithium secondary batteries with excellent coating quality and a method of preparing the same. The composite cathode active material comprises a core portion of a lithium transition metal compound and a shell portion of a sulfide-based solid electrolyte with a cohesive index between about 37 and 46. The shell constitutes about 2% to 10% by weight of the composite, with a thickness of about 50 nm to 500 nm and a planar density of about 0.05 mg/cm2 to 0.3 mg/cm2, determined by X-ray fluorescence spectrometry. The preparation method includes coating the core with the sulfide-based solid electrolyte through controlled mixing, stirring, and heat treatment, ensuring uniform and consistent coating quality. This composite material enhances the performance of lithium secondary batteries by improving the cathode's stability, ion conductivity, and overall electrochemical properties.
Resumen de: US2025372624A1
A negative electrode active material, a method for preparing the same, a negative electrode composition and a negative electrode including the same, and a lithium secondary battery including the negative electrode are provided.
Resumen de: US2025372623A1
The present invention relates to a positive active material including: a lithium transition metal oxide which is in the form of a single particle and divided into a surface part and a core; and a coating part which is formed on the surface part and contains cobalt, wherein the surface part includes an oxidation number gradient layer in which the oxidation number of nickel (Ni) increases toward the outermost surface, and a method for producing the same.
Resumen de: US2025372619A1
The present invention relates to a negative electrode active material, a negative electrode including the same, a secondary battery including the negative electrode, and a method for manufacturing a negative electrode active material.
Nº publicación: US2025372841A1 04/12/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
Resumen de: US2025372841A1
A battery cell may include an electrode assembly in which a first electrode and a second electrode are wound around a winding axis while a separator is interposed therebetween, the first electrode including a first non-coated portion that is not coated with an active material layer, a battery housing accommodating the electrode assembly therein, a collector including a support portion disposed on an upper portion of the electrode assembly, a tap coupling portion, a housing coupling portion including at least one welded portion welded to the inner surface of the between housing, and a housing cover configured to cover the opening, wherein the number of welded portions may be smaller than or equal to the number of tap coupling portions, or wherein a breaking portion configured to have lower strength than the surrounding area may be provided at the boundary between the support portion and the housing coupling portion.
BOPI
Sede Electrónica
