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1029
resultados
Última actualización
24/01/2026 [07:10:00]
Resultados 275 a 300 de 1029
Resumen de: WO2026016335A1
A solid-state electrolyte-coated graphite negative electrode material, and a preparation method therefor and a use thereof. The graphite negative electrode material comprises a matrix material and a solid-state electrolyte material coated on the surface of the matrix material, and the solid-state electrolyte material comprises a Ti-containing solid-state electrolyte, wherein the Ti-containing solid-state electrolyte comprises Ti3+ and Ti4+, and the molar ratio of Ti3+ to Ti4+ is y, and y satisfies 0.1≤y≤10; and the mass ratio of the Ti-containing solid-state electrolyte to the matrix material is x, and x satisfies 0.001≤x≤0.1.
Resumen de: US20260025090A1
A tool is provided including a motor powered by a battery, a power switch circuit, and a controller that controls the power switch circuit using a multi-phase trapezoidal commutation scheme including at least six commutation sectors for each rotation of the motor. The power switch circuit includes high-side power switches and low-side power switches configured as an inverter circuit. Within at least one phase of the motor that includes a first sector and a second sector driven by pulse-width modulation (PWM) control, a dissipation current path is provided through at least two of the high-side or two of the low-side power switches, for a current dissipation period that starts immediately after a motor commutation from the first sector to the second sector, for dissipation of the motor current associated with the first sector to avoid negative flow of motor current into the bus line.
Resumen de: US20260025013A1
An aspect of the current disclosure includes a battery management apparatus including a plurality of resistors respectively connected to a plurality of batteries, respectively, a plurality of first switches configured to respectively connect the plurality of resistors to output terminals of the plurality of batteries, respectively, a plurality of second switches configured to connect the plurality of resistors to each other in parallel, and a controller configured to determine whether each of the plurality of batteries is abnormal, and control operations of the plurality of first switches and the plurality of second switches based on whether each battery of the plurality of batteries is abnormal.
Resumen de: US20260025011A1
A charging system includes a voltage conversion circuit, a control circuit, an input end Vin and an output end Vout. The voltage conversion circuit and the control circuit are connected to M batteries, the input end Vin is connected to an external power supply, and the output end Vout is connected to a load. The control circuit is configured to switch a connection relationship between the M batteries, to connect at least one of the M batteries to the voltage conversion circuit, where the connection relationship includes at least one of a serial connection or a parallel connection. The voltage conversion circuit is connected to the input end Vin and the output end Vout; is configured to receive power from the external power supply through the input end Vin, and charge the at least one battery; and is further configured to supply power to the load through the output end Vout.
Resumen de: US20260025008A1
A control method of a multi-battery pack system is provided. The method includes: determining a first reference battery pack based on a charging-discharging state of the multi-battery pack system and battery voltages of enabled battery packs; determining a second reference battery pack based on the charging-discharging state of the multi-battery pack system and battery voltages of non-enabled battery packs; determining a to-be-turned off battery pack and a to-be-turned on battery pack based on a battery voltage of the first reference battery pack and a battery voltage of the second reference battery pack; and controlling to turn off the to-be-turned off battery pack and turn on the to-be-turned on battery pack.
Resumen de: US20260025007A1
A secondary battery charging system includes: an application including a battery and a battery management system (BMS); and a charger configured to supply charging power to the battery and to communicate with the application. Data related to at least one of the battery and the application is transmitted to the charger.
Resumen de: US20260024832A1
A method of recycling one or more valuable metal elements from a solid source material comprising the one or more valuable metal elements and fluorine, the method comprising: forming an acidic aqueous recycling feed by acid leaching the source material, or derivative thereof, the acidic aqueous recycling feed comprising the one or more valuable metal elements; and recovering the one or more valuable metal elements from the acidic aqueous recycling feed via one or more further process steps selected from solvent extraction, solid phase extraction, electrochemical extraction, and precipitation processes, wherein the fluorine is extracted prior to recovery of the one or more valuable metal elements from the acidic aqueous recycling feed.
Resumen de: US20260024787A1
The fluid hydrogen carrier of this disclosure contains a hydrogen storage alloy and an alkaline electrolyte.
Resumen de: US20260024831A1
A method recovers a valuable element, by which method Ni and Co can be selectively recovered. In the recovery method, an oxide is reduced by adding a reductant and a flux containing CaO and SiO2 to the oxide, followed by heating, the oxide containing: at least one element selected from the group made of nickel and cobalt; and manganese. The reductant contains a carbon-containing substance and an iron-containing substance, and the iron-containing substance is at least one selected from the group made of metallic iron and an iron oxide. An addition amount of the carbon-containing substance and the iron-containing substance in total is not less than 1.0 equivalents and not more than 1.5 equivalents.
Resumen de: US20260024836A1
A battery cell is presented. The battery cell has a negative electrode, a positive electrode, and a separator positioned between the electrodes. The separator includes a water wicking thermo-responsive organophosphate ceramic coating configured to release water as a temperature within the battery cell rises.
Resumen de: US20260024828A1
A method and apparatus for charging a battery pack including a plurality of electrochemical cells distributed within a thermal management composite matrix, including a phase change material. The method operates upon determining that a battery pack temperature and/or voltage measurement is below a predetermined minimum threshold. The pack temperature and/or the voltage measurement is raised to the predetermined minimum threshold, such as by applying a low current rate, and then the charging rate is increased upon reaching the predetermined minimum threshold. The increased charging rate is further selected based upon a thermal state of charge of the thermal management composite matrix.
Resumen de: WO2026016324A1
Provided in the embodiments of the present application are a photographic battery and a control method and control apparatus therefor. The photographic battery comprises a first port module for supplying power to photographic equipment, and a second port module for supplying power to an external device. The control method comprises: acquiring the total output power of a photographic battery, the power supply state of a first port module and the power supply state of a second port module; and if the first port module and the second port module are both in an external power supply state, and the total output power of the photographic battery is higher than a first power threshold value, controlling a port in the second port module to power off, such that the total output power of the photographic battery is lower than the first power threshold value. The technical solution in the embodiments of the present application can realize effective control over a photographic battery, thereby improving the usage safety and power supply efficiency of the photographic battery while expanding the usage scenarios of the photographic battery.
Resumen de: WO2026016474A1
Disclosed in the present application are a sodium secondary battery and an electric device. The sodium secondary battery comprises: a positive electrode sheet, the positive electrode sheet comprising a positive electrode active material, and the positive electrode active material comprising a polyanionic positive electrode active material; a negative electrode sheet, the negative electrode sheet comprising a negative electrode current collector, and sodium metal being formed by means of in situ deposition on the negative electrode current collector upon charging of the sodium secondary battery; a separator, the separator being located between the positive electrode sheet and the negative electrode sheet; and an electrolyte, the electrolyte comprising a solvent, the solvent comprising an ether solvent, and the volume proportion of the ether solvent being 50-100% on the basis of the total volume of the electrolyte. Therefore, the reaction degree of a sodium metal layer on a negative electrode is reduced during the cycling process, thereby improving the safety of the battery.
Resumen de: WO2026016310A1
The present application discloses a battery, a positive electrode sheet and slurry, a dispersant, a preparation method, and an electric device. The battery comprises a positive electrode sheet; the positive electrode sheet comprises a current collector and a positive electrode material layer provided on at least one side of the current collector; the positive electrode material layer comprises a positive electrode active material and a dispersant; the dispersant comprises a polyester compound; the polyester compound comprises a structural unit A and/or a structural unit B; the chemical formula of the structural unit A is (I), and the chemical formula of the structural unit B is (II), wherein R1 and R2 are each independently selected from at least one of a C0 group, a C1-C18 alkyl group, and a C6-C18 aryl group; R3 and R4 are each independently selected from at least one of H, a C1-C18 alkyl group, a C6-C18 aryl group, and an ester group. The dispersant can improve the dispersibility of the positive electrode slurry, and enhance the uniformity and flexibility of the positive electrode sheet, thereby enabling the battery to achieve high capacity and stability.
Resumen de: EP4683063A1
The present disclosure relates to a battery including: an electrode assembly; and a housing configured to store the electrode assembly and having a crimping portion configured such that an end around an opening formed on one side thereof is bent inward, wherein a recessed portion may be formed on a bent end of the crimping portion so as to be at least partially recessed inward.
Resumen de: EP4683082A1
A battery pack according to certain embodiments of the present disclosure comprises: at least one battery module including a plurality of battery cells; a pack frame that is opened at its upper part and houses at least one of the battery modules; and a pack cover that covers the opened upper part of the pack frame; wherein a venting part for discharging a venting gas is formed on an upper surface of the battery module, and wherein the battery module includes a protrusion part that protrudes upward from the upper surface of the battery module.
Resumen de: EP4683033A1
Disclosed is a battery module, and a battery pack and a vehicle including the same. The battery module includes a battery cell stack in which a plurality of battery cells are stacked; a case in which the battery cell stack is accommodated; and a cooling member disposed between the plurality of battery cells, wherein the battery cells include only a first battery cell having electrode leads respectively formed at both sides thereof, or include only a second battery cell having both electrode leads formed at one side thereof.
Resumen de: EP4682111A2
This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm or LixNiyCozMkMepOrAm whose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size Dn10 of the positive active material satisfies: 0.5 µm≤Dn10≤3 µm. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.
Resumen de: EP4682112A2
This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm or LixNiyCozMkMepOrAm whose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size Dn10 of the positive active material satisfies: 0.5 µm≤Dn10≤3 µm. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.
Resumen de: GB2642786A
An easily-demolded high-insulation low-corrosion condensed aerosol fire extinguishing agent and a preparation method therefor. Strontium nitrate and potassium nitrate are jointly used as an oxidizing agent, and molybdenum disulfide, niobium diselenide, etc. are used as additives, for mixing, bonding, granulation, and compression with other raw materials so as to obtain a condensed aerosol fire extinguishing agent; and a sprayed substance of the condensed aerosol fire extinguishing agent has the advantages of high insulation and low corrosion. The additives added in the condensed aerosol fire extinguishing agent can cause relative slippage during grain demolding to form a hydrophobic slippage plane, so that a lubricating effect is achieved, the agent is prevented from absorbing moisture in air, and the problems that the condensed aerosol fire extinguishing agent containing strontium nitrate is prone to moisture absorption and failure, and is difficult to demold in compression molding are solved; and the storage requirements of the condensed aerosol fire extinguishing agent are reduced, and the compression process is simplified.
Resumen de: EP4683100A1
A secondary battery (100), a battery pack (1002), and an electronic device (1000) is provided. The secondary battery (100) includes a top cover (172), a terminal post (50) disposed on the top cover (172), an electrode assembly (120), and a rivet (10). The electrode assembly (120) includes a cell body (124) and a tab (122) protruding from the cell body (124). A riveting hole (1220) is provided on the tab (122). The rivet (10) is connected to the terminal post (50) and penetrates through the riveting hole (1220) to rivet the terminal post (50) and the tab (122).
Resumen de: EP4683098A1
The present application discloses a battery cell, a lithium ion battery manufacturing method, and a lithium ion battery. The battery cell comprises a body and tab assemblies; each tab assembly comprises a dummy tab group, an outer tab, and a tab adhesive; the dummy tab group comprises at least one dummy tab connected to the body; the outer tab is conductively connected to the dummy tab group; in a projection in the thickness direction of the body, the outer tab and the dummy tab group partially overlap to form an overlapping portion, and the tab adhesive is wrapped around at least part of the overlapping portion; two tab assemblies are provided, and the two tab assemblies are staggered in the width direction of the body. The distance between the tab adhesives and the body is closer, the dummy tabs do not need to be folded, and a top sealing process step is directly performed at the positions of the tab adhesives after the battery cell is placed into a packaging housing, so that the space occupied by the tab assemblies between the body and the top sealing positions can be reduced, improving the energy density of the lithium ion battery, and the production steps of the lithium ion battery can be simplified, improving the production efficiency of the lithium ion battery.
Resumen de: EP4682985A2
The present application discloses a positive electrode active material and a preparation method thereof, a positive electrode plate, a lithium-ion secondary battery and a battery module, a battery pack and an apparatus related thereto. The positive electrode active material includes a lithium nickel cobalt manganese oxide, the molar content of nickel in the lithium nickel cobalt manganese oxide accounts for 60% - 90% of the total molar content of nickel, cobalt and manganese, and the lithium nickel cobalt manganese oxide has a layered crystal structure of a space group R 3m; a transition metal layer of the lithium nickel cobalt manganese oxide includes a doping element, and the local mass concentration of the doping element in particles of the positive electrode active material has a relative deviation of 20% or less; and in a differential scanning calorimetry spectrum of the positive electrode active material in a 78% delithiation state, an initial exothermic temperature of a main exothermic peak is 200°C or more, and an integral area of the main exothermic peak is 100 J/g or less.
Resumen de: EP4683003A1
An electrode assembly includes positive and negative electrode plates, each electrode plate including a respective positive or negative electrode mixture portion on which a respective positive or negative electrode active material is applied to an electrode substrate and a first uncoated portion on which an electrode active material is not applied to the respective positive or negative electrode substrate, and a separator between each of the positive electrode plates and each of the negative electrode plates, the positive and negative electrode mixtures each have two portions, separated by uncoated sections, the lengths of the bent uncoated portions match the lengths of their respective electrode substrates, and bent uncoated portions match the lengths of their respective electrode substrates.
Nº publicación: EP4682990A1 21/01/2026
Solicitante:
JIANGSU CONTEMPORARY AMPEREX TECH LTD [CN]
JIANGSU LITHITECH CO LTD [CN]
Jiangsu Contemporary Amperex Technology Limited,
Jiangsu Lithitech Co., Ltd
Resumen de: EP4682990A1
A method for preparing a positive electrode material, a positive electrode material, a positive electrode plate, a battery, and an electric apparatus are provided. The method includes: mixing a lithium source with a phosphoric acid solution to obtain a first mixture; mixing the first mixture with manganese hydrogen phosphate, an iron source, and an optional source of an M element to obtain a second mixture; and drying and sintering the second mixture to obtain a lithium manganese iron phosphate positive electrode material; where the M element includes one or more of transition metal elements other than manganese and iron, Group IIA metal elements, Group IIIA metal elements, Group IVA metal elements, and Group VIIA elements. The method reduces side reaction gases and by-products, increases the compacted density of the positive electrode material, lowers the resistivity of the positive electrode material, and improves the specific capacity and rate performance of a battery.
BOPI
Sede Electrónica
