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1452
resultados
Última actualización
04/05/2025 [07:15:00]
Resultados 975 a 1000 de 1452
Resumen de: US2025130288A1
The invention relates to a method for determining the state of charge of an electric energy store comprising electric energy store cells and at least one sensor,in which method: in a first method step, operating parameters of the electric energy store are determined;in a second method step, at least one maximum state of charge and at least one minimum state of charge are determined as a temporal integral for each electric energy store cell on the basis of a current (I), a current measuring inaccuracy (ΔI), at least one capacitance, a correction value for the minimum state of charge (formula (IA)), and a correction value for the maximum state of charge (formula (IB)) of the electric energy store cells;the correction value for the minimum state of charge (formula (IA)) is determined by means of a minimum state of charge (formula (IIA)) on the basis of a filtered minimum open-circuit voltage (formula (III)) of the electric energy store;the correction value for the maximum state of charge (formula (IB)) is determined by means of a maximum state of charge (formula (IIB)) on the basis of a filtered maximum open-circuit voltage (formula (III)) of the electric energy store;wherein a maximum state of charge (SOCmax) of the electric energy store is the maximum of the maximum states of charge (formula (IVA)) of all the electric energy store cells, and a minimum state of charge (SOCmin) of the electric energy store is the minimum of the minimum states of charge (formula (IVB)) of all th
Resumen de: US2025130285A1
A thermal runaway sign detection device includes a measurement unit that measures a voltage fluctuation in a first mode in which a number of times that a fluctuating current is output from the secondary battery and voltage fluctuation of the secondary battery in response to the fluctuating current is measured is first number of times, and in a second mode in which the number of times is second number of times less than the first number of times. A detection unit detects a sign of thermal runaway in the secondary battery when a rate of change in a real part of an AC impedance obtained based on the voltage fluctuation measured by the measurement unit at the fluctuating current of a predetermined frequency at which an imaginary part of the AC impedance of the secondary battery calculated based on the voltage fluctuation becomes zero, is greater than a threshold value.
Resumen de: US2025129923A1
A lamp cell box includes a switch, a least one button cell, a metal elastic sheet and a box holder. The switch includes a body, a button and a contact terminal. The metal elastic sheet includes a first elastic contact part. The box holder includes a cell trough, a switch trough, an elastic sheet trough, a first connection port and a second connection port, where the button cell is disposed in the cell trough, a portion of the metal elastic sheet is disposed in the elastic sheet trough, the body is disposed in the switch trough, the contact terminal penetrates through the first connection port and is in electrical contact with the negative electrode of the button cell, and the first elastic contact part penetrates through the second connection port and is in electrical contact with the positive electrode of the button cell.
Resumen de: US2025133325A1
This application discloses an earphone and an earphone assembly. The earphone includes a housing, a speaker, a main circuit board, and a battery. All of the speaker, the main circuit board, and the battery are mounted in the housing. The main circuit board is located between the speaker and the battery. The main circuit board is disposed in an inclined manner relative to the speaker. A risk that the speaker of the earphone generates current noise is low, and sound quality of the earphone is good.
Resumen de: US2025132415A1
A power battery heat exchanger, a power battery system and an electric vehicle are provided. The power battery heat exchanger comprises a connector, a first collecting tube assembly and a second collecting tube assembly which are arranged at intervals in a first direction, and a plurality of harmonica tubes arranged between the first collecting tube assembly and the second collecting tube assembly and arranged at intervals in a second direction. Each harmonica tube comprises a first end and a second end that are opposite to each other, an inlet of the connector is respectively in communication with first ends of one or more harmonica tubes through the first collecting tube, and an outlet of the connector is respectively in communication with first ends of remaining harmonica tubes through the collecting tube. Second ends of the plurality of harmonica tubes are in communication through the second collecting tube assembly.
Resumen de: US2025132380A1
A solid electrolyte, a positive electrode including the same, and an all-solid-state rechargeable battery, the solid electrolyte includes solid ion conductor particles; a coating layer on the solid ion conductor particles, the coating layer including a compound represented by Chemical Formula 1; and a lithium-deficient layer at an interface between the solid ion conductor particles and the coating layer:Li3+aM1bX16+c. Chemical Formula 1
Resumen de: US2025132340A1
The present disclosure relates to an electrochemical device that can simultaneously satisfy a high energy density of 400 Wh/kg or more, excellent lifespan characteristics, and stability. The electrochemical device according to the present disclosure includes a cathode; an anode including an anode current collector, or the anode current collector and lithium metal; and an electrolyte; wherein the cathode includes a cathode current collector; and a cathode active material layer formed on the cathode current collector, and including a porous binder scaffold and cathode active material particles.
Resumen de: US2025132419A1
The present application provides a loop-based thermal management method, apparatus, device, and system. A thermal management capacity deviation value in a current sampling stage is determined according to a rate of change of temperature difference and a temperature difference in a current sampling stage, and a thermal management capacity value is calculated according to a thermal management capacity value in a previous sampling stage and the deviation value. A corresponding number of chillers to be operated in the current sampling stage is determined according to the thermal management capacity value in the current sampling stage, and a target output cooling capacity of the chillers is determined according to a preset Cooling demand control strategy to control the chillers. This technical solution can reduce the energy consumption of the whole system. Furthermore, centralized control of the water loop improves the reliability and cooling efficiency of the battery cabinet.
Resumen de: US2025132374A1
An enclosure body and a method for manufacturing an enclosure includes one of extruding and deep drawing an enclosure including a plurality of side walls defining a first cavity. The plurality of side walls are formed without stiffening portions. After extruding and deep drawing of the enclosure, forming a plurality of stiffening portions on the enclosure using an expandable punch, a hydraulic punch, and/or hydroforming.
Resumen de: WO2025081403A1
The present disclosure belongs to the technical field of lithium battery recovery, and particularly relates to a recovery method used for waste lithium batteries and applied to lithium battery entire-chain integration. In view of valuable metals (such as nickel, cobalt and manganese) in waste lithium battery powder being insoluble in alkali, aluminum in the waste lithium battery powder can be removed by means of primary alkaline leaching; the aluminum-containing leachate is mixed with glycine, and the cooperative effect of glycine and copper ions is used, such that copper and aluminum are selectively leached out. The recovery method provided by the present disclosure can efficiently remove copper and aluminum at low cost, and improve the valuable metal recovery rate.
Resumen de: WO2025081728A1
The present application relates to a battery cell, a battery and an electrical apparatus. The battery cell comprises a casing and a first protective layer, the casing having a wall portion, the wall portion being provided with a weak portion, and the weak portion being configured to rupture when the internal pressure or temperature of the battery cell reaches a threshold value; the first protective layer is arranged on the wall portion and covers at least part of the weak portion. In the battery cell provided by the present application, the battery cell comprises the casing and the first protective layer, the casing has the wall portion, the wall portion is provided with the weak portion, the weak portion ruptures when the internal pressure or temperature of the battery cell reaches the threshold value, and the first protective layer covers at least part of the weak portion, so as to protect the weak portion, thus reducing corrosion of the weak portion, and ameliorating the impact on the bursting pressure of the weak portion.
Resumen de: WO2025081727A1
An energy storage power supply (100) comprising first and second battery modules and a battery management module (50). The battery management module (50) comprises an acquisition module (51) for acquiring operating parameters of the first and second battery modules, a charging-discharging module (52) electrically connected to the first battery module (10), a conversion module (53) electrically connected to both the first battery module (10) and the second battery module (30), and a control module (54).
Resumen de: WO2025081660A1
A positive electrode material and a preparation method therefor, and a lithium ion battery. The positive electrode material comprises: a core layer, the core layer comprising Li, Fe, Mn and PO4 - ions, and a doping element A; and a shell layer, wherein the outer surface of the core layer is coated with at least the surface of the shell layer, and the shell layer comprises first carbon particles and second carbon particles. The doping element A comprises at least one element of Al, Mg, Ni, Co, Ti, Ga, Cu, V, Nb, Zr, Ce, In, Zn and Y; the distance between the highest point and the lowest point in a single surface of the positive electrode material does not exceed 1 nm, and the surface roughness of the positive electrode material is 0.8 μm to 1.6 μm. By means of the two-time carbon coating process, the present application greatly reduces manganese dissolution while ensuring high capacity and high compaction of the positive electrode material, thereby ensuring the cyclic discharging efficiency of the positive electrode material.
Resumen de: US2025132468A1
Proposed in the present disclosure is a current collector structure, including a positive current collector, in which the positive current collector includes a current collector body and a current collector leading-out tab connected to each other; in which the current collector body is provided with a center underflow hole through the current collector body in a thickness direction thereof, and an entire surface of a surface of the current collector body in the thickness direction is a welding surface configured to weld with a positive tab of a winding core. Proposed in the present disclosure is also a battery pack including the aforementioned current collector structure.
Resumen de: US2025132470A1
A battery cell stack assembly for a prismatic battery includes a plurality of monocells and two current collector bracket assemblies. Each monocell includes an anode electrode sheet having an outer perimeter and an anode cell tab and a cathode electrode sheet having a cathode cell tab. One of the current collector bracket assemblies electrically connect each of the anode cell tabs with one another and a remaining current collector bracket assembly electrically connects each of the cathode cell tabs with one another, and each current collect bracket assembly includes at least one arm that is positioned to electrically connect either two or more of the anode cell tabs or two or more of the cathode cell tabs to one another.
Resumen de: US2025132457A1
A battery thermal management system including an air induction device for drawing air to a battery pack, a controller, a valve that opens to permit the air to enter the battery pack, and a temperature sensor for generating signals indicative of a temperature within the battery pack. Upon receipt of a signal from the temperature sensor that is indicative of the temperature within the housing being above a predetermined threshold, the controller is configured to instruct the air induction device to begin drawing the air, and instruct the valve to open to permit the air to enter the battery pack and cool each of the battery cells and dilute the battery gases generated by the plurality of battery cells.
Resumen de: US2025132406A1
A system for calculating the maximum power limit of a battery pack for an electric vehicle includes one or more controllers in electronic communication with the battery pack. A plurality of battery open circuit voltage look-up tables and a plurality of direct current internal resistance (DCIR) look-up tables are stored in memory of the one or more controllers.
Resumen de: US2025132585A1
An power module includes a battery cell and a circuit board electrically connected to the battery cell. A number of the battery cell is one. The battery cell is configured to feed a first voltage to the circuit board. The battery cell includes a housing and an electrode assembly disposed in the housing. The circuit board includes a buck-boost circuit and at least two output terminals. The buck-boost circuit is configured to receive the first voltage and step up or step down the first voltage, so as to output at least two different second voltages to the at least two output terminals respectively. Each of the output terminals is configured to feed one of the second voltages to a drive circuit in a load electrically connected to the output terminal.
Resumen de: US2025132384A1
The present application relates to the field of sodium-ion batteries and discloses a solid electrolyte material, a solid electrolyte, a cathode material and a preparation method thereof, and a sodium-ion battery. A ratio of a peak intensity I(020) of a (020) crystal plane to a peak intensity I(421) of a (421) crystal plane obtained by X-ray Diffraction (XRD) of the solid electrolyte material satisfies 0.9≤I(020)/I(421)<1. A ratio of a peak area A(020) of the (020) crystal plane to a peak area A(421) of the (421) crystal plane obtained by XRD of the solid electrolyte material satisfies 0.45≤A(020)/A(421)<1. The solid electrolyte material has good crystallinity, high ionic conductivity, and good structural stability. The cathode material made from the solid electrolyte material has high capacity and excellent rate, cycle, and thermal stability.
Resumen de: US2025132396A1
An all-solid-state secondary battery includes a cell stack having a stack structure, and a protective member including a first thermoplastic resin layer, a second thermoplastic resin layer, and a third thermoplastic resin layer sequentially stacked, and being disposed on a peripheral portion, in which the cathode layer is not disposed, of the solid-state electrolyte layers, while being interposed between the two solid-state electrolyte layers disposed to be adjacent to each other such that the cathode layer is interposed between the two solid-state electrolyte layers. A glass transition temperature of the first thermoplastic resin layer and a glass transition temperature of the third thermoplastic resin layer are lower than a glass transition temperature of the second thermoplastic resin layer.
Resumen de: US2025132333A1
A lithium secondary battery including a cathode. The cathode includes a cathode current collector and a cathode active material layer on one or both sides of the cathode current collector and including a cathode active material, a gamma sulfur-fibrous carbon-based material composite, and a sulfide-based solid electrolyte, wherein the cathode active material includes Li2S, a Li2S composite, or a combination thereof, and the gamma sulfur-fibrous carbon-based material composite has a structure in which monoclinic gamma phase sulfur (S) is on a fibrous carbon-based material.
Resumen de: US2025129207A1
Squaric acid-based polymers and their use in electrode materials and/or electrolyte compositions, as well as their production processes are described herein. Also described are electrode materials, electrodes, electrolyte compositions, electrochemical cells, electrochemical accumulators, and optoelectronic devices comprising the polymers and their uses.
Resumen de: US2025128951A1
A process for the purification of a graphite material that includes metal sulfide impurities is provided. The process includes subjecting the graphite material to oxidizing conditions, in the presence of oxygen, to convert the metal sulfide impurities into metal oxides and sulfur dioxide, thereby obtaining a metal sulfide-lean graphite material; subjecting the metal sulfide-lean graphite material to carbochlorination, in the presence of chlorine gas, to convert the metal oxides into metal chlorides and obtain a metal chloride-rich graphite material; and purging the metal chlorides from the metal chloride-rich graphite material, thereby obtaining a purified graphite material.
Resumen de: US2025128949A1
Provided is a carbon nanotube dispersion liquid that can cause an electrode for a secondary battery to display strong peel strength between an electrode mixed material layer and a current collector formed of a metal or the like, that can cause a releasable substrate-attached electrode mixed material layer to display weak peel strength between an electrode mixed material layer and a releasable substrate formed of a resin or the like, and that can cause a secondary battery to display excellent rate characteristics, or that enables the achievement of good film formation properties during carbon film formation. The carbon nanotube dispersion liquid contains carbon nanotubes and a solvent and has a fractal dimension 3 to 4 in a wavenumber range of 0.001 (1/angstrom) to 0.3 (1/angstrom) when a scattering curve obtained through measurement by ultra-small-angle X-ray scattering is analyzed by the Beaucage model.
Nº publicación: US2025128311A1 24/04/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Resumen de: US2025128311A1
A blanking device for a secondary battery electrode plate, including a first mold including a die and a first stripper, the die surrounding the first stripper and having a structure with one open side portion, and the first stripper having a structure with one open side portion aligned with the one open side portion of the die, and a second mold facing the first mold, the second mold including a punch and a second stripper, and the first mold being moveable toward the second mold.
BOPI
Sede Electrónica
