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1724
resultados
Última actualización
23/03/2026 [07:26:00]
Resultados 800 a 825 de 1724
Resumen de: US20260074198A1
Embodiments described herein relate to a method comprising soaking a wood in a mild acid, soaking the wood in an iron containing solution, pyrolizing the wood, heat treating the wood to create a graphitized monolith, leaching the graphitized monolith to remove iron remaining in the graphitized monolith, and infiltrating the graphitized monolith with sulfur to create a cathode. Embodiments described herein relate to a method of fabricating a sulfur-carbon composite cathode as shown and described herein. Embodiments described herein relate to a sulfur-carbon composite cathode as shown and described herein.
Resumen de: US20260074188A1
An anodeless all-solid-state battery includes an anode current collector, a composite structure layer positioned on the anode current collector, a solid electrolyte positioned on the composite structure layer, and a cathode positioned on the solid electrolyte, in which the composite structure layer includes a carbon layer including a carbon material, and a metal deposition layer positioned on the carbon layer and including lithiophilic metal particles.
Resumen de: WO2026051632A1
The present application relates to a secondary battery and an electronic device. Specifically, the present application provides a secondary battery, comprising a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are provided on the positive electrode current collector, the insulating layer comprises boehmite, the positive electrode material layer comprises a nickel-cobalt-manganese ternary material, and the electrolyte comprises at least two dinitrile compounds. The present application can not only improve the short-circuit safety of the battery, but also reduce gas production at high temperature.
Resumen de: WO2026051631A1
The present application relates to a secondary battery and an electronic device. Specifically, the present application provides a secondary battery, comprising: a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are provided on the positive electrode current collector; the insulating layer comprises boehmite, the positive electrode material layer comprises a lithium cobalt oxide, the lithium cobalt oxide comprises element tungsten and element tin, and the electrolyte comprises vinylene carbonate. The present application can not only improve the short-circuit safety of batteries, but also enhance high-rate discharge characteristics.
Resumen de: WO2026051582A1
A battery apparatus (1000) and an electric apparatus (1). The battery apparatus (1000) comprises: a main box (100), wherein the main box (100) defines an accommodating cavity (101) with an open top, the main box (100) comprises a steel plate layer (110) and an aluminum plate layer (120) that are stacked in the thickness direction, and the aluminum plate layer (120) is arranged on the side of the steel plate layer (110) facing the accommodating cavity (101); and a battery cell (200), arranged in the accommodating cavity (101).
Resumen de: WO2026051493A1
The present application provides a battery apparatus (100) and an electric device. The battery apparatus (100) comprises: a case (2); a battery cell (10) arranged inside the case (2); and a low-voltage acquisition assembly (3) arranged inside the case (2), the low-voltage acquisition assembly (3) being used for acquiring operating state parameters of the battery cell (10), and the operating state parameters including voltage and temperature. The low-voltage acquisition assembly (3) comprises: a first sampling member (31), the first sampling member (31) being connected to the battery cell (10) so as to acquire the voltage of the battery cell (10); a second sampling member (32), one end of the second sampling member (32) being detachably connected to the first sampling member (31) so as to transmit the voltage; a third sampling member (33), the third sampling member (33) being detachably connected to the other end of the second sampling member (32) so as to transmit the voltage; and a fourth sampling member (34), the fourth sampling member (34) being connected to the second sampling member (32) so as to acquire the temperature of the battery cell (10).
Resumen de: WO2026051195A1
The present invention relates to the technical field of positive electrode sheets of lithium batteries, and in particular relates to preparation methods for and the use of a polyamide-imide binder and a positive electrode sheet. The polyamide-imide binder is a high-molecular polymer prepared by polymerizing a diamine monomer and a dianhydride monomer to prepare a polyamide acid intermediate, then adding a diisocyanate thereto and performing cross-linking. The polyamide-imide binder comprises both amide groups and imide groups, and has a number-average molecular weight of 50,000-300,000. The positive electrode sheet comprises the polyamide-imide binder. In the polyamide-imide binder, some amide groups are added on the basis of polyimide, thereby retaining high tensile strength and elasticity modulus of the imide groups, improving the flexibility and impact resistance of the electrode sheet, lowering the cracking risk of the electrode sheet, enhancing the capacity retention ratio and safety of a battery and prolonging the service life; moreover, the energy density of the battery can be further improved by means of thick coating.
Resumen de: WO2026051479A1
A polymer electrolyte membrane, a battery cell, a battery device, and an electric device. The polymer electrolyte membrane comprises a first polymer electrolyte membrane and a second polymer electrolyte membrane which are stacked; the first polymer electrolyte membrane comprises a first polymer, a first plasticizer, and a first electrolyte salt, and the second polymer electrolyte membrane comprises a single-ion conducting polymer electrolyte. The polymer electrolyte membrane is used in the battery cell so that the battery cell has good cycle performance.
Resumen de: WO2026051430A1
Disclosed are an identification method, a battery system (10), an energy storage power source (100) and a storage medium. The identification method is used for a battery system (10), wherein the battery system (10) comprises a plurality of battery modules (11), each battery module (11) comprises a battery management system board (111), and the battery management system board (111) comprises an input interface (1111). The identification method comprises: acquiring a level of the input interface (1111) of the battery management system board (111); when the level of the input interface (1111) is a low level, determining that a battery module (11) corresponding to the battery management system board (111) is a master module; and when the level of the input interface (1111) is a high level, determining that the battery module (11) corresponding to the battery management system board (111) is a slave module.
Resumen de: US20260070403A1
A battery module for an electric vehicle capable of improving NVH performance mounted on a vehicle body includes a battery casing, a plurality of cells disposed in series in a vehicle front-rear direction, a support portion for supporting each of the plurality of cells, and a partition portion disposed between the adjacent cells. When support rigidity of the support portion is y N/m, mass of each of the cells is m kg, a value of tan δ as a loss factor of the support portion is x, and a minimum value ymin of y is ymin=5.184×109 (1/x)2(1/m)3, a maximum value ymax of y is ymax=482.2531x2m5, and ymin
Resumen de: US20260074259A1
Disclosed are an apparatus and a method for folding sides of a pouch-type battery and a die for the same. The apparatus for folding sides of a pouch-type battery includes a die including a folding formation space including an inlet through which a side of a pouch-type battery enters, an outlet through which the side of the pouch-type battery exits, and a side opening formed on one side of the die to guide side of the pouch-type battery to pass therethrough, and a transfer unit that transfers the pouch-type battery along a longitudinal direction of the die. A space between the inlet and the outlet of the folding formation space is formed so that the side of the pouch-shaped battery having entered the inlet is gradually folded while moving and finally the outlet has a final folding shape.
Resumen de: US20260074225A1
A positive electrode 13 for secondary battery of the present disclosure includes a positive electrode current collector 11 and a positive electrode active material layer 12 supported on the positive electrode current collector 11, where the positive electrode active material layer 12 includes a positive electrode active material and polyvinyl alcohol modified with a phosphorus compound. A method for manufacturing the positive electrode 13 for secondary battery includes: preparing a polymer solution including polyvinyl alcohol, a phosphorus compound, and a solvent; preparing a positive electrode slurry including the polymer solution and the positive electrode active material; and applying the positive electrode slurry to the positive electrode current collector 11 to form the positive electrode active material layer.
Resumen de: US20260074219A1
A cathode active material for lithium secondary batteries, a method of preparing the same, a cathode including the same, and a lithium secondary battery including the cathode are provided. The cathode active material includes nickel-based lithium metal oxide secondary particles each including a plurality of large primary particles, the nickel-based lithium metal oxide secondary particles having a hollow structure having pores therein, each of the plurality of large primary particles having a size of about 2 μm to about 6 μm, and each of the nickel-based lithium metal oxide secondary particles having a size of about 10 μm to about 18 μm; and a cobalt compound-containing coating layer on surfaces of the nickel-based lithium metal oxide secondary particles.
Resumen de: US20260074183A1
A method of making silicon-carbon composite particles is disclosed. The method includes: (A1) carrying out metallothermic reduction on initial particles comprising silicon oxide in the presence of a metal to form first intermediate particles comprising (1) an oxide of the metal and (2) silicon; (A2) forming a termination material on and in the first intermediate particles to form second intermediate particles; (A3) selectively removing the oxide of the metal from the second intermediate particles to form third intermediate particles; and (A4) forming a protective material on and in the third intermediate particles to form the silicon-carbon composite particles. In some implementations, the metal comprises magnesium or a magnesium-aluminum alloy. Silicon-carbon composite particles, lithium-ion rechargeable batteries, and other related processes and components are also disclosed.
Resumen de: US20260074185A1
A non-aqueous electrolyte secondary battery comprises an electrode body and an exterior body, and has a volumetric energy density of 600 Wh/L or more. The positive electrode includes: a positive electrode core body; and a positive electrode mixture layer containing a positive electrode active material. The positive electrode active material contains: a lithium-containing composite oxide having a layered rock-salt structure; and a surface modification layer that is present on particle surfaces of the composite oxide. The surface modification layer contains: at least one element of Ca and Sr; and at least one element selected from the group consisting of W, Mo, Ti, Si, Nb, and Zr. The positive electrode mixture layer has a base weight amount of 250 g/m2 or more. At least three positive electrode leads are connected to the positive electrode.
Resumen de: US20260074186A1
A positive electrode for a rechargeable lithium battery includes: a current collector; a first positive electrode active material layer on a first surface of the current collector; and a second positive electrode active material layer on a second surface of the current collector, wherein the first positive electrode active material layer includes a 1a layer in contact with the current collector and a 1b layer on a surface of the 1a layer, the 1a layer and the 1b layer each include a positive electrode active material and a binder, the 1a layer and the 1b layer have pores, a ratio of a porosity of the 1b layer to a porosity of the 1a layer is about 0.9 to about 1.1, and a thickness ratio of the first positive electrode active material layer to the second positive electrode active material layer is about 1.3:1 to about 3:1.
Resumen de: US20260074197A1
A lithium-ion battery component and method of manufacture are presented. An active material layer with a lithiophilic nitrate compound is mixed with graphite particles and coated onto a current collector. Upon polarization, lithiophilic nanoparticles form on the graphite surfaces, while nitrate anions remain in the electrode structure. The lithiophilic nanoparticles inhibit lithium plating during charging and increase electronic conductivity. The nitrate anions weaken lithium ion solvation in the electrolyte, facilitating faster lithium ion intercalation into the graphite.
Resumen de: WO2026051500A1
The present application discloses an electrochemical apparatus and an electrical device. The electrochemical apparatus comprises an electrode assembly and a first discharge controller, the electrode assembly comprising a plurality of negative electrode sheets. The plurality of negative electrode sheets comprise at least one first negative electrode sheet and at least one second negative electrode sheet. Each first negative electrode sheet comprises a first negative electrode active substance layer, and the mass percentage of the element silicon in the first negative electrode active substance layer is N1, where N1≥0. Each second negative electrode sheet comprises a second negative electrode active substance layer, and the mass percentage of the element silicon in the second negative electrode active substance layer is N2, where N2>N1. A second negative tab is electrically connected to the first discharge controller. The first discharge controller is preset to have a first cut-off voltage. The first discharge controller is configured to disconnect an electrical connection between the second negative tab and an external load when the discharge voltage of the electrode assembly is equal to or less than the first cut-off voltage. The electrochemical apparatus is beneficial for improving discharge capacity.
Resumen de: WO2026051506A1
Provided are a secondary battery and an electric device. By reasonably designing the composition of an electrolyte and a positive electrode material of a secondary battery, the secondary battery satisfies formula I, wherein N is the molar ratio of lithium salts LiPO2F2 and LiPF6 in the electrolyte, and N = 0.01-11; W1 is the weight ratio of cyclic carbonate to chain carbonate; W2 is the weight percentage of element A in a positive electrode active material; and C is the weight percentage of a sulfur-containing additive in the electrolyte. Keeping formula II within a suitable range can ensure excellent kinetic performance and low impedance in a lithium-ion battery, so that the migration of lithium ions in the battery maintains a good state, and the secondary battery can maintain good cycle performance at a high voltage.
Resumen de: WO2026051486A1
A battery device (100), an electric device, and a vehicle (1000). The battery device (100) comprises: battery cells (10); an electrical structure (50); a case (20), wherein the case (20) is internally provided with a first accommodating cavity (201) and a second accommodating cavity (202), and at least part of the second accommodating cavity (202) is located above the first accommodating cavity (201) in the direction of gravity; and a one-way valve (30) provided on the case (20), wherein one end of the one-way valve (30) faces the first accommodating cavity (201), the other end of the one-way valve (30) faces the second accommodating cavity (202), and the one-way valve (30) is configured to allow a fluid in the second accommodating cavity (202) to enter the first accommodating cavity (201). The fluid in the second accommodating cavity (202) is discharged to the first accommodating cavity (201) by means of the one-way valve (30), thereby reducing damage to the electrical structure (50) caused by the fluid leaked from a liquid-cooled structure, and reducing damage to the electrical structure (50) caused by high-temperature and high-pressure fumes and gases generated by thermal runaway of the battery cells (10).
Resumen de: WO2026051212A1
The present invention relates to the technical field of lithium-ion batteries. Disclosed are a graphite composite material having a functional coating layer, a preparation method therefor and a use thereof. The graphite composite material having a functional coating layer is a secondary particle formed by bonding graphite single particles of a core-shell structure. Each graphite single particle comprises a graphite particle and a functional coating layer that coats the surface of the graphite particle. The functional coating layer comprises a fast ion conductor and a doped element carbon layer. In the graphite composite material having a functional coating layer disclosed in the present invention, by coating the surfaces of graphite particles with a doped element carbon layer and a fast ion conductor layer and performing re-granulation to form a secondary particle, the Li+ diffusion path is shortened and the interfacial diffusion resistance is reduced, and the surface SEI layer is stabilized, thereby significantly improving the high-rate capacity performance and long-cycle stability of the graphite composite material.
Resumen de: WO2026051147A1
A negative electrode material, a negative electrode sheet, and a lithium-ion battery. The negative electrode material comprises a first negative electrode active material and a second negative electrode active material; the length-to-diameter ratio of the first negative electrode active material is a, and the powder compaction and pressure relief rebound rate is P1; the length-to-diameter ratio of the second negative electrode active material is b, and the powder compaction and pressure relief rebound rate is P2; and P1, P2, a, and b satisfy the relationship: (37*P1/a+75*P2/b)＞2.5.
Resumen de: WO2026051311A1
The present application relates to the technical field of batteries, and in particular to a battery cell cover plate and a battery cell. The battery cell cover plate comprises: a cover plate body provided with a mounting hole, the mounting hole being provided with a first mounting part and a second mounting part; a pressure relief member provided on the first mounting part; and a support member provided on the second mounting part, wherein the pressure relief member abuts against the support member, the support force provided by the support member to the pressure relief member is F, in units of N, the weight of the battery cell is G, in units of N, and G/F≤0.12. In the present application, the mounting hole on the cover plate body is divided into two parts, i.e., the first mounting part and the second mounting part. The first mounting part is used for mounting the pressure relief member, and the second mounting part is used for mounting the support member. By providing the support member, the structural strength of the area of the cover plate body where the pressure relief member is mounted can be effectively improved, and the pressure relief member abuts against the support member, so that the support member can also serve as a support platform for the pressure relief member, thereby ensuring that the pressure relief member is reliably and firmly mounted, and improving the safety of the battery cell.
Resumen de: US20260074215A1
The present disclosure relates to a positive electrode active material including: a lithium nickel-based transition metal oxide with a large particle diameter and a lithium nickel-based transition metal oxide with a small particle diameter. The lithium nickel-based transition metal oxide with a large particle diameter is a secondary particle. The lithium nickel-based transition metal oxide with a small particle diameter is a single particle formed of one nodule and/or a quasi-single particle that is a composite of 30 or less nodules. The lithium nickel-based transition metal oxide with a large particle diameter has a D50 of 5 μm to 30 μm, a Z value defined by factors of roundness distribution characteristics of 1.0 to 9.0, and a negative skewness factor (NSF) of 0.1 to 0.9. Use of the positive electrode active material in a lithium secondary battery results in improved lifespan and/or output characteristics of the battery.
Nº publicación: US20260074212A1 12/03/2026
Solicitante:
FORD GLOBAL TECH LLC [US]
FORD GLOBAL TECHNOLOGIES, LLC
Resumen de: US20260074212A1
A positive electrode active material for lithium-ion batteries may include a compound represented by the general formula Li1.10-aMn0.52+aNi0.38-xCoxO2 wherein 0
BOPI
Sede Electrónica
