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1263
results.
Updated on
26/12/2025 [07:11:00]
Results 950 to 975 of 1263
Absstract of: US2025379465A1
A rapid charging control apparatus includes a measuring unit configured to measure a voltage of a battery, and a control unit configured to estimate a SOC of the battery based on the voltage of the battery, determine a charging C-RATE corresponding to the estimated SOC based on a charging profile preset to represent the corresponding relationship between SOC and charging C-RATE, and block charging of the battery for a predetermined time when the charging C-RATE corresponding to the estimated SOC changes.
Absstract of: US2025379459A1
A battery is electrically coupled to a bidirectional power converter (i) to output discharge current through a first electrical path between battery cells and the bidirectional power converter, and (ii) to receive charging current through the first electrical path from the bidirectional power converter. A battery management system is configured to monitor the battery cells, detect a fault condition of the battery cells, transmit a first control signal to the bidirectional power converter to control the bidirectional power converter to cease operating in response to detecting the fault condition of the one or more battery cells, and transmit a second control signal to a switching element to close the switching element to cause a short circuit between a positive side and a negative side of the battery to cause a first overcurrent protection device to open to prevent current from flowing into or out of the battery cells.
Absstract of: US2025379466A1
The charging and discharging operation method of a lithium-ion battery according to the present disclosure comprises measuring an overpotential for each discharge voltage while discharging the lithium-ion battery, determining a minimum discharge voltage for controlling charging and discharging based on a measurement result of the overpotential and controlling charging and discharging the lithium-ion battery according to the determined minimum discharge voltage.
Absstract of: US2025379457A1
The invention is an energy storage system, comprising: a plurality of elongated compartments, each designed to house a string of energy storage cells; each compartment is equipped with accessible openings, engineered to facilitate the easy installation and removal of the storage cells; the compartments being architected to host two or more storage cells, positioned adjacently within its extremities; a retaining mechanism is also incorporated, which serves to hold the string of cells firmly pressed together, thereby forming a reliable current path; the system incorporates a balancing mechanism; this mechanism includes a balancing system that comprises electrical tabs connecting the junctions of adjacent cells and a mechanism capable of moving charge into and out of these tabs. This movement of charge facilitates charging or discharging of the cells, thereby maintaining balanced voltages across the system.
Absstract of: WO2025251528A1
A method for preparing sodium vanadium fluorophosphate as a positive electrode material for sodium-ion batteries on the basis of spray drying, which method aims to solve the problems of poor electronic conductivity and fluorine loss in sodium vanadium fluorophosphate as a positive electrode material for sodium-ion batteries. The method comprises dissolving a carbon source, a phosphorus source, a sodium source and a vanadium source in water, and then drying same in a spray dryer to obtain a precursor powder; and then uniformly mixing the precursor powder with a fluorine source, and calcining the resulting mixture for 3-6 h to obtain sodium vanadium fluorophosphate, namely, a positive electrode material for sodium ion batteries. The material is made of micron spherical particles having a core-shell structure, the particle size is about 8 μm, the shell thickness is about 200 nm, the initial specific discharge capacity is 110.60 mAh/g at a rate of 1 C, and the specific discharge capacities are 97.90 mAh/g and 74.70 mAh/g at rates of 10 C and 30 C, respectively. The present invention can be used in the field of sodium-ion batteries.
Absstract of: WO2025251706A1
The present application relates to the technical field of secondary batteries. Disclosed is a battery film-wrapping process, comprising the following steps: attaching an insulating adhesive strip to at least one side face of a battery cell; performing pre-wrapping appearance inspection on the battery cell; unwinding an insulating film, and wrapping the insulating film around the battery cell, such that two side edges of the insulating film wrap onto the side face of the battery cell, and the two side edges of the insulating film are respectively joined to two opposite sides of the insulating adhesive strip, thereby forming an exposed part of the battery cell between the two side edges of the insulating film and outside the insulating adhesive strip; and attaching a top patch to a battery cell cover plate. In the present application, the two side edges of the insulating film are respectively joined to the two opposite sides of the insulating adhesive strip, so as to form the exposed part between the two side edges of the insulating film and outside the insulating adhesive strip, thereby increasing the direct contact and bonding area between a battery cell casing and adjacent components, and thus enhancing the bonding strength between the battery cell and the adjacent components; in addition, the insulating adhesive strip is attached to the side face of the battery cell, thereby ensuring the insulation performance of a battery.
Absstract of: WO2025251715A1
A first aspect of the present application provides a battery jelly roll, which is formed by winding a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet. At least one surface of the positive electrode sheet is provided with a positive electrode coating, and at least one surface of the negative electrode sheet is provided with a negative electrode coating. The negative electrode coating comprises a negative electrode active material; the negative electrode active material at least comprises a silicon material and a carbon material, and the weight percentage of the silicon material in the negative electrode active material is Y%; and the tortuosity of the separator is X, X being greater than or equal to 0.15Y0.5+1.8. A second aspect of the present invention provides a cylindrical battery, comprising the battery jelly roll, a cap, and a steel shell. The interior of the steel shell accommodates the battery jelly roll, and the top of the steel shell is sealed with the cap. In the present application, the tortuosity of the separator is designed on the basis of the proportion of the silicon-based material in the negative electrode active material, which can greatly reduce the penetration of iron and nickel elements into the central area, thereby significantly improving the cycle performance and safety performance of the battery cell.
Absstract of: US2025379250A1
Disclosed is a method of manufacturing an all-solid-state battery, the method including a mixture formation step of mixing positive electrode active material powder coated with a lubricating material and electrolyte powder with each other to form a mixture, an application step of applying the mixture to a positive electrode current collector, and a pressing step of pressing the mixture and the positive electrode current collector. Pores in a positive electrode composite layer formed in the pressing step may be reduced, whereby the performance of the all-solid-state battery may be improved.
Absstract of: US2025379248A1
An embodiment of the present disclosure can provide an electrode assembly, comprising: a first electrode wound about a winding axis and comprising a first uncoated portion a second electrode wound about the winding axis and comprising a second uncoated portion, and a separator disposed between the first electrode and the second electrode; wherein the first uncoated portion comprises a plurality of cutting portions, formed at a predetermined depth from an end of the first electrode, and a plurality of cross-cutting portions, extending from the cutting portions and formed in a winding direction.
Absstract of: US2025379249A1
An apparatus for pressurizing a battery includes: a plurality of pressurization plates configured to pressurize a plurality of battery cells interposed between the pressurization plates; a buffering pad interposed between one of the pressurization plates and one of the battery cells, the buffering pad comprising foamed silicon; and a pressure adjustment part configured to adjust pressure between the pressurization plates by adjusting a distance between the pressurization plates.
Absstract of: US2025379244A1
A thermal management control apparatus for a fuel cell electric vehicle includes: a stack cooling line configured to cool a fuel cell stack of the fuel cell electric vehicle; a battery cooling line configured to cool a battery of the fuel cell electric vehicle; a valve configured to control an inflow of the stack coolant; and a control apparatus configured to diagnose whether a component of the valve or the battery cooling line has failed based on the battery having overheated, and configured to cool the battery based on a failure of the valve or a component failure of the battery cooling line having occurred.
Absstract of: US2025379312A1
A battery and a vehicle. The battery comprises: a battery box and at least one battery cell. The battery box comprises a box body and a top cover, the top cover is arranged on the top of the box body, and an accommodation cavity is defined between the top cover and the box body. All the battery cells are arranged in the accommodation cavity, and the upper part of at least some of the battery cells is fixedly connected to the top cover.
Absstract of: WO2025251183A1
Provided in the present invention is an operating method of a lead-acid storage battery. The lead-acid storage battery comprises a housing, wherein an electrode plate wrapped in an AGM separator is mounted in the housing, the AGM separator has pores, and a sulfuric acid electrolyte is adsorbed in the pores of the AGM separator. The operating method of the lead-acid storage battery comprises an early stage of charging and discharging, an intermediate stage of charging and discharging and a later stage of charging and discharging, wherein in the early stage of charging and discharging, the sulfuric acid electrolyte is adsorbed in all the pores of the AGM separator; and in the intermediate stage of charging and discharging and the later stage of charging and discharging, the sulfuric acid electrolyte is not adsorbed in some of the pores of the AGM separator. The present invention further sets forth a lead-acid storage battery serving as a secondary battery. The lead-acid storage battery and the operating method thereof of the present invention can prolong the service life of the lead-acid storage battery.
Absstract of: WO2025251340A1
A top cover having an integrally formed explosion-proof valve (11), comprising: a top cover main body (10); an explosion-proof valve (11) integrally formed with the top cover main body (10); the top cover main body (10) comprises an outer surface (101) and an inner surface (102) opposite the outer surface (101); the explosion-proof valve (11) comprises a valve main body (111) and a safety groove (112); the valve main body (111) comprises a recessed portion (103) extending toward the inner surface (102) of the top cover main body (10), a lower edge of the recessed portion (103) contracts inwardly and forms a protruding portion (104) extending toward the outer surface (101) of the top cover main body (10), and the safety groove (112) is provided on a top surface of the protruding portion (104). A battery casing (20) having the integrally formed explosion-proof valve (11), and a processing method for the top cover and the battery casing (20). The method comprises locally heating the safety groove (112) region to improve the microstructure thereof, so as to lower and stabilize the rupture pressure value.
Absstract of: WO2025251429A1
The present application relates to a packaging device and a packaging method. The packaging device comprises: a conveying mechanism, which is used for driving a first film material to move in a prearranged direction; a first film-laying mechanism, which is arranged on a moving path of the first film material and is used for forming on the first film material a plurality of accommodating positions that are arranged at intervals in the prearranged direction; and a second film-laying mechanism, which is used for laying a second film material onto an electrode assembly at each of the accommodating positions. In the present application, during the movement of the first film material, the first film-laying mechanism successively forms on the first film material in the prearranged direction the plurality of accommodating positions that are arranged at intervals, and then the second film-laying mechanism lays the second film material onto the electrode assembly at each of the accommodating positions, so that the first film material and the second film material jointly coat the electrode assembly. Thus, during the constant-speed movement of the first film material, the first film-laying mechanism can synchronously implement continuous shell punching and form the plurality of accommodating positions, thereby allowing for continuous production in electrode assembly packaging processes and improving production efficiency.
Absstract of: US2025379460A1
A power dolly includes a planar platform supported by at least three wheels, a battery mechanically coupled to the planar platform and located between the wheels, a mains input connector configured to receive mains power and to charge the battery, a battery charger electrically coupled to the mains input connector and configured to charge the battery using mains power received at the mains input connector, an inverter configured to receive direct current (DC) power from the battery and to provide alternating current (AC) power at an inverter output connector, and a wireless communication receiver configured to receive a control signal and to output the received control signal via a control output connector.
Absstract of: US2025379461A1
The disclosure relates to an intraoral scanner battery charger that includes two or more battery slots configured to receive an intraoral scanner battery, wherein each of the two or more battery slots includes a charging interface that is configured to an intraoral scanner battery interface of an intraoral scanner. The charging interface is configured to transfer a charging current to the intraoral scanner battery. The charger further includes a processor unit configured to control the charging current based on a prioritized charging algorithm. The prioritized charging algorithm includes transferring a first charging current to a first intraoral scanner battery and a second charging current to a second intraoral scanner battery, and wherein the first charging current is higher than the second charging current during a charging period, and during a subsequent charging period, the first charging current is lower than the second charging current.
Absstract of: US2025379456A1
A cell balancing device and method includes: obtaining a first minimum cell voltage value and a first maximum cell voltage value of a to-be-balanced battery module in a latest full-charging operation; determining a first charge capacity of a first target cell in the battery module in a corresponding first time period in response to a first charging operation by the battery module; and updating a balancing capacity of the first target cell based on the first charge capacity. The first target cell has a voltage value greater than or equal to the first minimum cell voltage value. The first time period corresponding to the first target cell is a period of time that begins when the voltage value of the first target cell reaches the first minimum cell voltage value for a first time and that ends when the first charging operation of the battery module is ended.
Absstract of: US2025379455A1
A battery pack comprising a battery stack and a controller electrically connected to the battery stack. The controller is configured to determine a state of health of the battery stack and adjust a state of charge (SOC) limit for the battery stack based on the determined state of health.
Absstract of: US2025379217A1
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. The negative electrode active material comprises a silicon-based active material comprising a (220) crystal plane and a (111) crystal plane, the silicon-based active material comprising Si and optionally SiOx (0
Absstract of: WO2025251526A1
The present invention belongs to the technical field of lithium batteries, and provides a lithium metal battery negative electrode and a preparation method therefor, and a lithium secondary battery. The lithium metal battery negative electrode comprises: a current collector and a lithium metal layer provided on the surface of the current collector, and a composite film layer is provided on the side, away from the current collector, of the lithium metal layer. The composite film layer comprises a two-dimensional black phosphorus nanosheet and a polymer piezoelectric material, and the mass ratio of the two-dimensional black phosphorus nanosheet to the polymer piezoelectric material is 1:1-2. The growth of lithium dendrites and the decomposition of an electrolyte solution can be inhibited, and the attenuation of battery performance can be effectively mitigated.
Absstract of: WO2025251523A1
A battery cell (10), a battery (100), and an electrical device, relating to the technical field of batteries. The battery cell (10) comprises: a casing (12), at least two side walls of the casing (12) having different thicknesses, the casing (12) having a first side wall (12a) in a first direction (X), at least one end of the casing (12) in a second direction (Z) being provided with an opening (121), and the second direction (Z) being perpendicular to the first direction (X); and an end cover (11), which covers the opening (121), the end cover (11) being provided with a positioning portion (111), and the first side wall (12a) being provided with a mating portion (122) mating with the positioning portion (111). The positioning portion (111) and the mating portion (122) serve as fool-proof structures, which can reduce the possibility of the end cover (11) being assembled in a wrong direction relative to the casing (12), thereby improving the assembly quality and assembly efficiency of the battery cell (10).
Absstract of: WO2025251643A1
Provided in the present application are an electrolyte additive, an electrolyte and a battery. The electrolyte additive comprises a first additive, a second additive and a third additive; the first additive comprises a compound represented by formula 1, R1 being selected from a C atom or an O atom, R2 being selected from formula 5 or formula 6, R3 being selected from methylene, formula 7 and formula 8, R4 being selected from formula 9 or formula 10, and R2, R3 and R4 at least comprising one sulfur atom; the second additive comprises at least one of a compound represented by formula 2 and a compound represented by formula 3, X comprising a P atom or a B atom; the third additive comprises a compound represented by formula 4: R-N=C=O formula 4, R comprising at least one of an alkyl group, an O=C=N-substituted alkyl group, a cycloalkyl group, an O=C=N-substituted cycloalkyl group, an aryl group and an O=C=N-substituted aryl group. Thus, the present application can form on electrode surfaces stable and low-impedance interfacial films, thereby reducing the impedance of batteries and the gas production of the batteries, and improving the cycle performance of the batteries.
Absstract of: WO2025251855A1
The present application provides a pressure relief valve and a battery pack. The pressure relief valve comprises a valve body; a through pressure relief hole is formed in the valve body; whistle holes are formed on the outer peripheral surface of the valve body; the whistle holes extend to the inner peripheral surface of the pressure relief hole, and form, on the inner peripheral surface, openings communicated with the pressure relief hole. The whistle holes are configured to produce a sound when allowing part of gas in the pressure relief hole to be discharged.
Nº publicación: US2025379264A1 11/12/2025
Applicant:
THE REGENTS OF THE UNIV OF MICHIGAN [US]
THE REGENTS OF THE UNIVERSITY OF MICHIGAN
Absstract of: US2025379264A1
A method is disclosed for manufacturing an electrochemical cell including an anode, an electrolyte, and a cathode including cations that move from the cathode to the anode during charging. The method comprises: (a) obtaining a measurement of an electrochemical feature at a selected time in a formation charging phase for creating the electrochemical cell from a cell structure, wherein the electrochemical feature is other than capacity, resistance, and voltage decay; and (b) maintaining or adjusting, based on the measurement of the electrochemical feature, at least one process parameter of a manufacturing process selected from: a production process for an anode of a later-produced electrochemical cell, a production process for a cathode of the later-produced electrochemical cell, an assembly process for a cell structure of the later-produced electrochemical cell, a filling process for an electrolyte of the later-produced electrochemical cell, and a formation charging process of the later-produced electrochemical cell.
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