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1603
resultados
Última actualización
24/06/2026 [07:18:00]
Resultados 125 a 150 de 1603
Resumen de: WO2026124686A1
The present application relates to the technical field of lithium batteries. Disclosed are a charging-port-free rechargeable lithium battery and a manufacturing method therefor. The lithium battery comprises a first negative metal housing, a voltage adjustment circuit board, a low-voltage positive cap, a high-voltage positive connector, a lithium battery cell, a low-voltage positive and negative insulating separator and an insulating housing. A first flange is provided inwards at the upper end of the first negative metal housing; a negative copper ring and a positive copper ring are provided on the upper surface of the voltage adjustment circuit board; the voltage adjustment circuit board is welded to the inner side of the first flange on the first negative metal housing by means of the negative copper ring; and the high-voltage positive connector is arranged on the inner surface of the voltage adjustment circuit board. The lithium battery in the present application can stably output a low voltage, and the voltage adjustment circuit board is welded to the inner side of the first flange, such that the electrical connection performance is very reliable, and sealing is achieved by means of solder; there is no need to provide an insulating support below the voltage adjustment circuit board for support, thereby omitting the insulating support, and reducing a height space occupied by the voltage adjustment circuit board; and the capacity of the lithium battery cell is increased by
Resumen de: WO2026123909A1
An electrolyte for a lithium-ion battery and a preparation method therefor, and a lithium-ion battery. The electrolyte comprises an organic solvent, a lithium salt, and a functional additive. The functional additive comprises an additive A. The lithium salt comprises a lithium salt B. The lithium salt B is selected from one or more of lithium bis(trifluoromethanesulfonyl)imide, lithium bis(fluorosulfonyl)imide, lithium bis(oxalato)borate, lithium difluoro(oxalato)borate, lithium difluorobis(oxalato)phosphate, lithium trifluoromethanesulfonate, and lithium 4,5-dicyano-2-(trifluoromethyl)imidazole. The additive A can be oxidized to form a film on a surface of the positive electrode, thereby stabilizing the crystal structure of the positive electrode and improving high-temperature cycling performance. Compared with conventional lithium salts, the lithium salt B has an anionic group with a larger radius, which weakens the binding capacity for lithium ions, improves the dissociation capacity of the lithium salt, and increases the conductivity of the electrolyte, thereby improving low-temperature discharge power performance.
Resumen de: WO2026123811A1
The present application provides a binder, a positive electrode sheet, and a secondary battery. The binder of the present application comprises a fluorine-free polymer, and the fluorine-free polymer comprises a first structural unit and a second structural unit. In addition, the pH of the binder is 6-10. The binder of the present application not only has good bonding performance, but also has the effects of inhibiting collapse of a main material structure under high temperatures and high voltages and reducing heat production inside a secondary battery, such that a positive electrode sheet can have good safety performance and cohesion, thereby improving the thermal safety performance and energy density of the secondary battery.
Resumen de: WO2026123339A1
The present application discloses a battery cell, an electrolyte, a battery device, and an electrical device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte. The electrolyte comprises a lithium salt, a solvent, and a sulfonate ester additive. Based on the total mass of the electrolyte, a mass percentage of the solvent is 65 wt% to 85 wt%, a mass percentage of the lithium salt is 8 wt% to 15 wt%, and a mass percentage of the sulfonate additive is 0.1 wt% to 5 wt%. The solvent comprises a cyclic carbonate having a mass content of 20 wt% to 35 wt% and a linear carboxylate having a mass content of 60 wt% to 80 wt%. The lithium salt comprises a first lithium salt and a second lithium salt in a mass ratio of 1:10 to 4:1. A length of the battery cell is 200 mm to 1600 mm, a width of the battery cell is 100 mm to 500 mm, and a thickness of the battery cell is 20 mm to 80 mm. The length-to-thickness ratio of the battery cell is 5 to 150. According to the embodiments of the present application, both the high-rate charging and discharging performance and the cycle life of a battery cell can be ensured.
Resumen de: WO2026123410A1
Disclosed in the present invention are a negative electrode sheet and a secondary battery. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer coated on at least one surface of the negative electrode current collector, wherein the negative electrode current collector is a porous current collector, and the negative electrode active material layer comprises silicon and a carbon material. Within an area of 250 μm*150 μm, parameters of the negative electrode sheet as characterized by EDS scanning satisfies the relationship: 5%≤Cu/(Si+C)≤30%. In the present invention, by controlling the mass proportion of carbon, silicon, and copper elements in the negative electrode sheet to satisfy the relationship 5%≤Cu/(Si+C)≤30%, the porosity and liquid retention coefficient of the negative electrode sheet is controlled within set ranges, thereby solving the problem of balancing energy density and cycling performance while ensuring consistency of liquid retention.
Resumen de: WO2026123617A1
The present application provides a positive electrode slurry, a lithium-ion battery, and an electric device. The positive electrode slurry in the present application comprises a lithium iron phosphate main material, a binder, a conductive agent, and a porous additive, wherein the conductive agent comprises conductive carbon black having a high specific surface area, and the specific surface area of the conductive carbon black is greater than or equal to 130 m2/g. The porous additive having a medium pore size and the conductive carbon black having a small pore size and a high specific surface area fill the spaces between the lithium iron phosphate particles in the positive electrode slurry provided in the present application, so that a positive electrode sheet which uses the positive electrode slurry not only has a small pore spacing inside, but also forms a gradient pore structure that can reduce the tortuosity of lithium ion transport, thereby achieving the technical effects of improving the electrolyte wettability of an electrode and improving the properties such as a fast charge capability, cycle life, and low-temperature discharge capability of the battery.
Resumen de: WO2026123981A1
A cylindrical battery welding device, comprising: a rotating assembly (1) having a longitudinal central axis and adapted to rotate around the longitudinal central axis; a plurality of battery carriers (2) arranged around the rotating assembly, wherein the rotating assembly rotates so as to drive the plurality of battery carriers to rotate around the longitudinal central axis, each battery carrier is used for clamping a battery (5), and the axis line of the battery carrier has a return state in which the axis line is parallel to the longitudinal central axis and an inclined state in which the top of the battery is away from the longitudinal central axis relative to the bottom; and a welding module (3) adapted to weld the battery when the battery carrier is in the inclined state. According to the welding device, when the battery carrier is in the inclined state, on-the-fly welding can be achieved more easily; in addition, by means of rotation of the battery, it can be ensured that the welding trajectory of the welding module is an arc, and the trajectory is simple, thereby reducing the welding difficulty.
Resumen de: AU2024385690A1
An all-solid-state battery negative electrode layer according to one embodiment of the present invention includes a negative electrode active material and a solid electrolyte. The negative electrode active material is a silicon-based material, and the solid electrolyte is a boron cluster-type solid electrolyte.
Resumen de: US20260171595A1
A battery cell, a battery, and an electric device. The battery cell comprises: an electrode assembly comprising a positive electrode sheet and a negative electrode sheet, the positive electrode sheet and the negative electrode sheet form a flat region; and a housing comprising a first wall portion and two second wall portions, the two second wall portions being respectively located on two sides of the flat region in a first direction. The first wall portion comprises a shell body and a pressure relief portion, wherein the shell body is arranged around the periphery of the pressure relief portion, a notch groove is formed in the pressure relief portion and has a first groove wall section obliquely extending in the first direction on a bottom wall thereof, and the first groove wall section is at an angle to the first direction.
Resumen de: AU2024410005A1
A battery according to an embodiment disclosed in the present document may comprise: a first measurement unit for measuring a first voltage which is the voltage between a first bus bar connecting a first battery cell and a second battery cell and a second bus bar connecting a third battery cell and a fourth battery cell and transferring the first voltage to a management unit; a second measurement unit for measuring a second voltage which is the voltage between a third bus bar connecting the second battery cell and the third battery cell and a fourth bus bar connecting the fourth battery cell and a fifth battery cell and transferring the second voltage to the management unit; and the management unit for calculating the voltage of the third battery cell by performing a mathematical operation for the first voltage and the second voltage.
Resumen de: WO2026123398A1
The present application relates to the field of battery materials, and provides a phosphate positive electrode material and a preparation method therefor, a positive electrode sheet, and a secondary battery. The phosphate positive electrode material comprises an inner core and a carbon layer coating the inner core. The inner core comprises a sodium vanadium fluorophosphate material. The compaction density of the phosphate positive electrode material is greater than or equal to 1.78 g/cm3, and the BET specific surface area thereof is greater than or equal to 9 m3/g. The Raman spectrum of the phosphate positive electrode material has a D peak and a G peak, and the intensity ratio of the D peak to the G peak is (1.03-1.05):1. In the present application, the provided phosphate positive electrode material uses a sodium vanadium fluorophosphate material having a high working voltage as an inner core, and the inner core is coated with a carbon layer having a high crystallinity, which not only provides the phosphate positive electrode material with better electron conductivity and structural stability, but also improves the compaction density and BET specific surface area thereof, thereby facilitating the preparation of a secondary battery having high energy density.
Resumen de: WO2026124542A1
A method and apparatus for determining a battery SOC, and an electronic device. The method comprises: acquiring an OCV curve of a battery; extracting a capacity variation feature corresponding to the OCV curve, and on the basis of the capacity variation feature, determining a linear region and a non-linear region which correspond to the OCV curve; identifying a conversion node between the linear region and the non-linear region, and determining the conversion node as an SOC identification point; and determining the current calculated SOC value of the battery, and determining a target SOC value on the basis of an SOC corresponding to the SOC identification point, a preset SOC reference value, and the calculated SOC value.
Resumen de: WO2026123493A1
The present application discloses a battery liquid leakage detection method, an electronic device, and a storage medium. The method comprises: acquiring sample battery data when battery liquid leakage occurs in a sample battery; performing standardization processing on the sample battery data, and dividing the processed sample battery data into a training set and a test set; on the basis of the training set, training a preset long short-term memory model, and, on the basis of the test set, determining a liquid leakage detection model in the trained long short-term memory model; and, on the basis of the liquid leakage detection model, performing battery liquid leakage detection on a battery under test. The described solution can improve the timeliness of battery liquid leakage detection.
Resumen de: WO2026123771A1
The present application provides a silicon-based negative electrode material having an artificial SEI film, and a preparation method therefor and the use thereof. The silicon-based negative electrode material comprises a silicon-based material, and a carbon layer and a conductive artificial SEI composite layer which are arranged on the silicon-based material, wherein the carbon layer is located between the silicon-based material and the conductive artificial SEI composite layer; and the conductive artificial SEI composite layer is obtained by reacting a reactive precursor with a reactive conductive material. In the present application, by means of the design of a three-layer structure and interaction between the layers, the uniform, tight and stable coating of a nanometer conductive material is achieved, the utilization rate of the conductive material is improved, the silicon-based negative electrode material has low expansion, a high capacity, and a good conductivity and cycling stability, and the cycle performance of a lithium-ion battery comprising same is improved. When the silicon-based negative electrode material is used for manufacturing a negative electrode sheet and a battery, an extra nanometer conductive material does not need to be added, thereby simplifying a manufacturing process for the battery and significantly reducing the use cost of the silicon-based negative electrode material.
Resumen de: US20260171503A1
0000 An electrolyte solution for a lithium metal battery, a lithium metal battery and an electrical device. The electrolyte solution for a lithium metal battery includes an organic solvent. The organic solvent includes a phosphate compound including a silicon-containing group and at least one phosphate group, where an oxygen atom of at least one phosphorus-oxygen single bond in the phosphate group is connected to a silicon atom of the silicon-containing group by a covalent single bond.
Resumen de: WO2026123414A1
The present application relates to the technical field of secondary batteries, and specifically relates to a composite material and a preparation method therefor, a negative electrode current collector, a metal battery, and an electrical apparatus. The composite material provided in the present application comprises: a MXene material, the MXene material comprising surface functional groups; silver nanoparticles, the silver nanoparticles being grown in situ on the surface of a sheet layer of the MXene material; and modified bacterial cellulose, the modified bacterial cellulose comprising bacterial cellulose and oxygen-containing functional groups modified on the surface of the bacterial cellulose. The modified bacterial cellulose is loaded on the surface of the MXene material, the manner of loading of the modified bacterial cellulose at least comprising: intermolecular interaction between the oxygen-containing functional groups of the modified bacterial cellulose and the surface functional groups of the MXene material. The composite material provided in the present application has excellent lithiophilic performance, and can delay the formation of lithium dendrites, thereby helping to improve the electrochemical performance of a metal battery.
Resumen de: WO2026123583A1
The present application discloses a battery, an electrochemical apparatus, and an electrical apparatus. The battery comprises a battery cell, the battery cell comprising an electrode sheet and a tab provided on the electrode sheet. A negative electrode active material layer of the electrode sheet contains silicon, and the percentage content of silicon in the negative electrode active material layer is b, the unit being %. The longest distance between the tab and an end portion of the electrode sheet in the length direction is d, the width of the connection position between the tab and the electrode sheet is m, and the units of d and m are the same; and b, d, and m satisfy the following relational expression (I). In the present application, by means of comprehensively controlling the values of formula (II), a battery having higher energy density can be obtained, and it can also be ensured that the battery has better battery fast charging performance.
Resumen de: US20260167022A1
0000 A vehicle integrated domain controller architecture, a vehicle management system, and a vehicle. The vehicle integrated domain controller architecture includes: a low-voltage battery, a battery management module, a low-voltage power distribution module, and a thermal management module, where the low-voltage battery is electrically connected to the low-voltage power distribution module; the low-voltage power distribution module is configured with a low-voltage load access terminal configured to connect to a low-voltage load; the thermal management module is configured with a thermal management load access terminal configured to connect to a thermal management load; and the battery management module, and the low-voltage power distribution module, and the thermal management module share the same controller.
Resumen de: US20260171410A1
A hard carbon material has a flake-like structure, where a length of the flake-like structure is denoted as L, and a width of the flake-like structure is denoted as D1, where L satisfies: 2 μm≤L≤16 μm; and D1 satisfies: 0.1 μm≤D1≤3 μm. The hard carbon material can have good contact between particles thereof, better processing performance, and a higher gram capacity, thereby further increasing the compacted density of the battery electrode plate, reducing electrode plate resistance, and improving the energy density of the secondary battery while improving the rate performance, and cycling performance of the secondary battery.
Resumen de: WO2026123443A1
Provided in the present application is a lithium-ion battery, comprising a solvent, a lithium salt and an electrolyte. The electrolyte comprises additives. The proportion of the additives in the electrolyte is denoted as Add, the unit of Add being parts; a charging cut-off voltage of the lithium battery is denoted as Vol, the unit of Vol being V; a CB value of the lithium battery, Add and Vol satisfy the relationship: 0.98≤CB×Vol/Add≤1.54; and the CB value of the lithium battery is a dimensionless value. The additives include a negative electrode film-forming additive, a positive electrode complexing additive, and a positive electrode high-voltage resistant additive.
Resumen de: US20260171605A1
0000 Disclosed is a separator for an electrochemical device, an electrochemical device comprising the same, and a method for manufacturing the same. The separator for the electrochemical device can improve resistance and maintain porosity after lamination by including a polyvinylidene-containing binder containing a low content of hexafluoropropylene and/or a polyolefin-containing binder.
Resumen de: US20260171522A1
0000 A charging and discharging method for energy storage, relating to the technical field of new energy. The method comprises the following steps: (1) setting up a hardware system; (2) carrying out initialization detection to ensure that each hardware device is in a normal state; (3) setting up a software system; and (4) during standby or working, a controller reading battery parameters of each measurement and control unit in turn and comparing set data to make corresponding actions. The charging and discharging method for energy storage has the advantages of simple and convenient wiring, low cost, and easy maintenance.
Resumen de: US20260167498A1
The invention relates to a carbon particle comprising at least 97 wt. % carbon, based on the total weight of the carbon particle, at most 0.2 wt. % impurities, based on the total weight of the carbon particle, at least 0.08 wt. % boron, based on the total weight of the carbon particle, at most 0.05 wt. % boron carbide, based on the total weight of the carbon particle. The invention also relates to a method for the manufacture of the carbon particle comprising a graphitization step in an electric field. The invention also relates to the use of the carbon particle as the active material of a negative electrode for a battery.
Resumen de: US20260171815A1
A circuit board is to be used for a battery monitoring system configured to monitor a battery condition of a battery unit. The circuit board includes: a wireless antenna; a wireless unit configured to perform wireless communication through the wireless antenna to transmit or receive the battery condition; and a connecting conductor configured to be connectable to an electrical path between the wireless unit and the wireless antenna and configured to allow an inspection terminal to be electrically connected thereto.
Nº publicación: US20260171573A1 18/06/2026
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD.
Resumen de: US20260171573A1
0000 A battery pack includes a lower frame including a base plate, a first side plate connected to a first side of the base plate, and a second side plate connected to a second side of the base plate, and first and second battery assemblies on the base plate, and each of the first and second battery assemblies includes a cell stack including a plurality of battery cells and a first cross beam coupled to a first side of the cell stack and a second cross beam coupled to a second side of the cell stack.
BOPI
Sede Electrónica
