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1499
resultados
Última actualización
08/08/2025 [07:36:00]
Resultados 225 a 250 de 1499
Resumen de: US2025253703A1
A method, an apparatus, a system and a device for directly charging a battery based on photovoltaic panels are disclose, which belongs to the field of new energy technologies. The method includes firstly adjusting the number of series-connected photovoltaic panels of each photovoltaic panel series branch according to the desired battery charging voltage of the secondary battery, the current number of series-connected photovoltaic panels of each photovoltaic panel series branch and the current maximum power point voltage, to ensure that the maximum power point voltage of each photovoltaic panel series branch can match the desired battery charging voltage.
Resumen de: US2025253784A1
A system is provided with a set of removable battery packs and a set of power tools each including a motor, a controller, and a battery receiving portion. For each power tool, the controller is configured to identify a type of battery pack coupled to the battery receiving portion and set a conduction band associated with phases of the motor or an advance angle by which phases of the motor are shifted based on the identified type of the battery pack.
Resumen de: US2025253682A1
Provided is a battery system, including a first battery pack including a first battery cell, a second battery pack including a second battery cell, a charger, and at least one processor configured to control the charger to sequentially perform constant current (CC) charging on the second battery pack and the first battery pack based on input power being identified, and control the charger to sequentially perform constant voltage (CV) charging on the second battery pack and the first battery pack based on the CC charging of the second battery pack and the first battery pack being completed, wherein a discharging performance of the first battery pack is greater than a discharging performance of the second battery pack, and wherein a charging performance of the second battery pack is greater than a charging performance of the first battery pack.
Resumen de: US2025253405A1
Disclosed are a lithium-ion battery electrolyte, a lithium-ion battery and an electronic device. The electrolyte at least includes: a non-aqueous solvent, including a linear carboxylic acid ester solvent; a lithium salt, at least one of which contains sulfur; and an additive, including thiophene, and the content of the thiophene in the electrolyte is 0.1 wt % to 3 wt %.
Resumen de: US2025253341A1
A core-shell structured polymer, a conductive slurry, a secondary battery, and an electrical apparatus. The core-shell structured polymer comprises a core and a shell at least partially covering the core. The core contains a building block derived from a monomer represented by formula I and a building block derived from a monomer represented by formula II, and the shell contains the building block derived from the monomer represented by the formula I and a building block derived from a monomer represented by formula III, where R1, R2 and R3 are each independently selected from one or more of hydrogen, fluorine, chlorine, and fluorine-substituted C1-3 alkyl, and R4, R5, R6, R7, R8 and R9 are each independently selected from one or more of hydrogen, substituted or unsubstituted C1-5 alkyl.
Resumen de: US2025253434A1
A battery pack includes: a battery pack in which a plurality of battery modules are arranged; an upper heat sink covering the upper surface of the battery pack and having a plurality of upper cooling flow passages through which a cooling fluid may flow to cool the battery modules; and a lower heat sink covering the lower surface of the battery pack and having a plurality of lower cooling flow passages through which a cooling fluid may flow to cool the battery modules.
Resumen de: US2025253487A1
A separator and a preparation method thereof, a secondary battery, and an electric apparatus are provided. The separator includes a substrate and a coating. The coating is provided on at least one side of the substrate, where the coating includes primary particles and secondary particles, the primary particles being organic particles and the secondary particles having a pore structure.
Resumen de: US2025253340A1
The disclosure aims to provide a fluororesin for use in electrochemical device binders which enables formation of an electrode mixture sheet with high strength, and an electrochemical device binder, an electrode mixture, an electrode, and a secondary battery. Provided is a fluororesin for use in electrochemical device binders, the fluororesin including a tetrafluoroethylene unit and a chlorotrifluoroethylene unit.
Resumen de: US2025253404A1
The present invention provides a nonaqueous electrolyte solution for a nonaqueous lithium ion secondary battery that is provided with a negative electrode containing graphite, while comprising a nonaqueous electrolyte solution in an amount of X mass % relative to the mass of the negative electrode excluding the negative electrode collector, wherein X is 50 to 2,000. This nonaqueous electrolyte solution contains a lithium salt and a nonaqueous solvent; acetonitrile is contained as the nonaqueous solvent in an amount of A volume % relative to the volume of the nonaqueous solvent, wherein A is 5 to 70; the nonaqueous electrolyte solution contains vinylene carbonate (VC) as an additive; and the content of VC is (7×A/X) mass % to 10 mass % relative to the nonaqueous electrolyte solution.
Resumen de: US2025253310A1
An anode material and a battery provided. The anode material includes a carbon matrix and a silicon material. The anode material, tested by Raman spectroscopy, has a first characteristic peak at 520±10 cm−1 with a peak intensity of IA; a second characteristic peak at 960±10 cm−1 with a peak intensity of IB; and a third characteristic peak at 480±10 cm−1 with a peak intensity of IC, where IA, IB and IC have a relationship of 0.3≤IA/(IB+IC)≤0.6. The anode material provided has high initial Coulombic efficiency, high reversible capacity, and high expansion resistance.
Resumen de: US2025253319A1
A negative electrode including a negative electrode current collector; a negative electrode active material layer that is disposed on at least one surface of the negative electrode current collector and includes a negative electrode active material; and a coating layer including a negative-type (N-type) organic active material, wherein the negative electrode active material layer includes an inclined part provided in at least one side thereof by partitioning the negative electrode active material layer, and a flat part provided excluding the inclined part, the inclined part is inclined towards the surface of the negative electrode current collector, and the coating layer is disposed on at least a portion of the inclined part.
Resumen de: US2025253307A1
A system and methods for manufacturing a dry electrode for an energy storage device are disclosed. The system includes a first dry electrode material delivery system configured to deliver a dry electrode material, a first calendering roll, a second calendering roll, and a controller. The second calendering roll is configured to form a first nip between the first calendering roll and the second calendering roll. The first nip is configured to receive the dry electrode material from the first dry electrode material delivery system, and form a dry electrode film from the dry electrode material. The controller is configured to control a rotational velocity of the second calendering roll to be greater than a rotational velocity of the first calendering roll.
Resumen de: US2025253412A1
A nonaqueous electrolyte secondary battery including: an electrode group including a first electrode having a first current collector, a second electrode having a second current collector, and a separator interposed therebetween; a nonaqueous electrolyte; all housed in a battery case. The first electrode and the second electrode are wound with the separator interposed therebetween, with an outermost layer of the first electrode disposed further outside than an outermost layer of the second electrode. The winding-finish end of the first electrode is an end of an excess portion which is wound around an outer surface of the first electrode on an inner layer side, without the second electrode interposed therebetween. The circumferential length L1 of the excess portion is 90% or more of the circumferential length L of the first electrode of the outermost layer. The excess portion has a functional layer disposed on a surface of the first current collector.
Resumen de: US2025253386A1
An assembly includes a housing defining an internal volume and an electrochemical cell stack including a plurality of electrochemical cells is disposed in the internal volume. A compliance member is disposed in the internal. The compliance member includes a base, and a plurality of biasing members extending from a surface of the. The plurality of biasing members are configured to exert a biasing force on the electrochemical cell stack so as to compress the electrochemical cell stack. A compliance member may additionally, or alternatively be disposed on an electrode stack included in an electrochemical cell and configured to exert a biasing force on the electrode stack.
Resumen de: EP4597727A1
Provided is a method for manufacturing a separator having a polymer adhesive layer, comprising (S1) preparing an aqueous polymer slurry comprising a particulate binder polymer having a glass transition temperature (Tg) of 20°C or more and a particle size D50 of 300 to 800 nm, a wetting agent and a particulate acrylic binder polymer having a Tg of - 10°C or less and a particle size D50 of 100 to 200 nm; and (S2) coating the aqueous polymer slurry on at least one surface of a polyolefin-containing porous membrane having pores and drying the aqueous polymer slurry.
Resumen de: EP4597714A1
A housing assembly (400), a battery cell (10), a battery (100), and an electric device (1000) are provided. The housing assembly (100) is used for the battery cell (10) and includes a housing (1) and a separator (420). A pressure relief portion (430) is formed on an outer surface of the housing (1); the separator (420) includes a fitting surface (421), a groove (422) is formed on the fitting surface (421), the fitting surface (421) is fitted to the outer surface of the housing (1), and at least part of the pressure relief portion (430) is accommodated in the groove (422).
Resumen de: EP4596204A1
A molding apparatus according to an embodiment of the present invention may mold a pouch film. The molding apparatus may include: a die in which a first opening is defined; a stripper disposed above the die to fix the pouch film and having a second opening; a sub die having a height that is variable with respect to the die inside the first opening; a punch configured to press the pouch film through the second opening and disposed to face the sub die; and a sub punch configured to press the pouch film between an inner circumference of the first opening and an outer circumference of the sub die through a space between an inner circumference of the second opening and an outer circumference of the punch.
Resumen de: EP4597638A1
Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode for the rechargeable lithium battery includes a current collector, a negative active material layer including an expansion reduction binder, a rubber binder, and a negative active material; and a functional layer between the current collector and the negative active material layer, wherein an amount of the expansion reduction binder is about 0.3 wt% to about 1 wt% based on 100 wt% of the negative active material layer, and an amount of the rubber binder is about 1 wt% to about 1.5 wt% based on 100 wt% of the negative active material layer.
Resumen de: EP4597621A1
Provided are a positive electrode active material, a positive electrode plate, a battery cell, a battery and an electrical apparatus, which belongs to the technical field of secondary batteries. The positive electrode active material includes a lithium-rich manganese-based material and a lithium-containing phosphate, in which, the lithium-rich manganese-based material includes solid particles and hollow particles, the hollow particle including a shell and a cavity provided inside the shell. Both the rate performance and the volume energy density of the battery cell can be taken into consideration in the technical solution of embodiments of the present invention.
Resumen de: EP4596474A1
A method for coating deviation correction, comprising: acquiring a first distance and a second distance, wherein the first distance is a distance from the edge of a coating area on a first surface of an electrode sheet substrate to a reference edge, and the second distance is a distance from the edge of a coating area on a second surface of the electrode sheet substrate to the reference edge; and determining a target deviation correction amount in the coating process on the basis of the first distance, the second distance, and at least one preset deviation correction amount. According to the method, the target deviation correction amount can be determined with high efficiency and accuracy. Also disclosed are a device for coating deviation correction and a computer readable storage medium.
Resumen de: EP4597597A1
A coating deviation correction method, comprising: acquiring a plurality of first distances and a plurality of second distances, wherein each of the plurality of first distances is the distance between the edge of a coating area on a first surface of an electrode sheet substrate and a reference edge, each of the plurality of second distances is the distance between the edge of a coating area on a second surface of the electrode sheet substrate and the reference edge, and the plurality of first distances and the plurality of second distances are obtained by sampling multiple times in one sampling period; and determining a target deviation correction amount in the coating process on the basis of the plurality of first distances, the plurality of second distances, and the at least one preset deviation correction amount. The method can effectively improve the performance of batteries. The present invention further relates to a coating deviation correction device.
Resumen de: EP4597622A1
The present disclosure is intended to provide a production method for a positive electrode active material with reduced degradation in resistance property. The technology disclosed herein relates to a production method for a positive electrode active material after sintering, the method comprising: a preparation step of preparing an end material that includes a positive electrode composite material including a positive electrode active material for a secondary battery and a binder containing fluorine; and a sintering step of sintering the positive electrode composite material in a container, wherein the sintering step is performed with magnesium hydroxide present in the container. Consequently, a positive electrode active material with reduced degradation in resistance property is achieved.
Resumen de: EP4597733A1
A busbar assembly according to one embodiment of the present disclosure includes: a busbar including a body and end portions that extend from both ends of the body and have through holes defined therein; an insulating layer that encloses the body and has a groove formed in a recessed shape; and a cap that is inserted into the groove and encloses the end portions, wherein the insulating layer has a stronger elasticity than the cap.
Resumen de: EP4596495A1
The present invention relates to a carbon nanotube dispersion, comprising carbon nanotubes, a first dispersant containing a nitrogen atom, a mixture of a second dispersant and cations, and a solvent, wherein the second dispersant contains at least one hydroxy group and at least one carboxyl group in an aromatic ring, and the cations contain at least one selected from the group consisting of an alkali metal ion, an alkaline earth metal ion, an aluminum ion, a transition metal ion, an ammonium ion and a sulfonium ion, and a method for preparing the same.
Nº publicación: EP4597629A2 06/08/2025
Solicitante:
HITHIUM TECH HK LTD [HK]
Hithium Tech HK Limited
Resumen de: EP4597629A2
The energy storage apparatus includes an electrode assembly, including a positive electrode sheet, a negative electrode sheet, and a separator. The positive electrode sheet includes a current collector and an active material layer. The active material layer includes a first lithium-containing compound and a second lithium-containing compound being a lithium-supplement particle and including a lithium-supplement core and an outer shell. A connection area and a separation area are formed between the lithium-supplement core and the outer shell. The ratio of the path length of the outer shell of the lithium-supplement particle in the connection area to the total circumference of the outer shell within a cross-section of the positive electrode sheet is greater than or equal to 5% and less than or equal to 45%.
BOPI
Sede Electrónica
