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1712
resultados
Última actualización
10/06/2025 [07:17:00]
Resultados 375 a 400 de 1712
Resumen de: WO2025113052A1
A battery management system and a vehicle. The battery management system comprises a battery pack and a heat exchange plate, wherein the heat exchange plate is configured to exchange heat with the battery pack, and the heat exchange plate is provided with a plurality of pairs of inlets and outlets; at least one flow channel is provided between the inlet and the outlet of the same pair and is in communication with the inlet and the outlet of the same pair; projections of all the flow channels in the heat exchange plate on the battery pack cover the battery pack; each inlet is configured to be in communication with an external phase-change working medium source; and the dryness of the phase-change working medium at each outlet is less than or equal to 0.93.
Resumen de: WO2025112504A1
A negative electrode material and a preparation method therefor, and a battery, relating to the technical field of batteries. The negative electrode material comprises a silicon-based core and a coating layer at least partially covering the surface of the silicon-based core. The negative electrode material satisfies that the ratio of B:A is 1-100, wherein A is the mass ratio of an oxygen element to a lithium element in the negative electrode material, and B is the atomic ratio of the oxygen element to a silicon element in the negative electrode material measured by an X-ray photoelectron spectrometer. The preparation method for the negative electrode material comprises: enabling a carbon-coated pre-lithiated silicon-based material to react with an oxidizing agent to obtain a negative electrode material. The ratio of B:A in the negative electrode material actually indicates the degree of oxidation treatment of the surface layer of the negative electrode material; the larger the ratio is, the higher the degree of surface oxidation is; and the reaction between the silicon-based core and external moisture can be reduced, reducing the risk of hydrolysis and gas production, thereby greatly improving the water resistance of the negative electrode material, and improving the initial efficiency and cycle performance of the battery.
Resumen de: WO2025112515A1
An electrochemical apparatus (100) and an electrical device. The electrochemical apparatus (100) comprises an electrode assembly (20) and a casing. The casing comprises a first bottom wall (103) and a second bottom wall (104) which are arranged opposite to each other in a first direction (X), a first side wall (101) and a second side wall (102) which are arranged opposite to each other in a second direction (Y), and a third side wall (105) and a fourth side wall (106) which are arranged opposite to each other in a third direction (Z), the first direction (X) being the thickness direction of the electrode assembly (20). The first side wall (101), the second side wall (102), the third side wall (105), the fourth side wall (106), the first bottom wall (103) and the second bottom wall (104) define an accommodating space (1001), the electrode assembly (20) being accommodated in the accommodating space (1001). The first side wall (101) comprises a first base part (1011) and a first protruding part (1012); the first protruding part (1012) is connected to the first base part (1011) and the third side wall (105); the outer surface (10121) of the first protruding part (1012) protrudes in the second direction from the outer surface (10111) of the first base part (1011); the inner surface (10122) of the first protruding part (1012) is recessed relative to the inner surface (10112) of the first base part (1011) in a direction away from the electrode assembly (20). The electrochemical appa
Resumen de: WO2025112624A1
Provided in the present application are a charging method and device. The charging method is applied to a device, wherein the device comprises a battery. The method comprises: charging a battery in a first stage of a charging period, and charging the battery in a second stage of the charging period, wherein the charging period is a process during which the battery is charged from a first preset state-of-charge to a second preset state-of-charge, the charging period consists of the first stage and the second stage, the second stage is after the first stage, the second stage comprises a constant-current charging step and/or a constant-power charging step, and the ratio of the duration of the constant-current charging step and/or the constant-power charging step to the duration of the second stage is greater than or equal to a first threshold value. The present application can increase the volume energy density of a battery, and can also reduce the influence on the cycle life of the battery, so that the mechanical failure of active substance particles of the battery can be slowed down, thereby improving the cycle performance of the battery and prolonging the service life of the battery.
Resumen de: WO2025112381A1
A secondary battery and an electric device. The secondary battery comprises a negative electrode sheet; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer; the negative electrode film layer has a first surface away from the negative electrode current collector and a second surface arranged opposite to the first surface; the thickness of the negative electrode film layer is recorded as H; a region extending from the second surface to a thickness of 0.3 H of the negative electrode film layer is recorded as a first region of the negative electrode film layer, the first region comprises a first negative electrode active material, and the first negative electrode active material comprises a first carbon-based material; a region extending from the first surface to a thickness of 0.3 H of the negative electrode film layer is recorded as a second region of the negative electrode film layer, the second region comprises a second negative electrode active material, and the second negative electrode active material comprises a second carbon-based material; the first carbon-based material comprises natural graphite; and a total hole area S2 of an internal region of the second carbon-based material is greater than a total hole area S1 of an external region of the second carbon-based material.
Resumen de: WO2025112327A1
Disclosed in the present application are a separator, a battery and an electric device. The separator comprises a porous substrate and a coating arranged on at least one surface of the porous substrate, wherein the coating comprises a fiber material and a granular filler, the fiber material comprises a first fiber material and a second fiber material, the average length of the first fiber material is denoted as L1, the average length of the second fiber material is denoted as L2, L1 is greater than 800 nm, and L1/L2 is greater than or equal to 2.4. The present application enables the battery to have a high reliability and good cycle performance.
Resumen de: WO2025112364A1
A secondary battery and an electric device. The secondary battery comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector, wherein the negative electrode film layer has a first surface away from the negative electrode current collector and a second surface arranged opposite the first surface; the thickness of the negative electrode film layer is denoted as H; a region within a thickness range from the second surface of the negative electrode film layer to 0.3H is denoted as a first region of the negative electrode film layer, and a region within a thickness range from the first surface of the negative electrode film layer to 0.3H is denoted as a second region of the negative electrode film layer; the first region comprises a first active material, and the second region comprises a second active material; the first active material comprises a first carbon-based material, and the second active material comprises a second carbon-based material; the first carbon-based material comprises an external region and an internal region located on an inner side of the external region, and the external region is a region extending a distance of 2.5 μm from the surface to the interior of particles of the first carbon-based material; in the cross-sectional view of the first carbon-based material, the total pore area of th
Resumen de: WO2025116653A1
The present invention provides: an electrolyte for a lithium-sulfur battery, the electrolyte comprising a predetermined lithium salt, thereby exhibiting excellent capacity retention and lifespan characteristics; and a lithium-sulfur battery comprising same. The electrolyte for a lithium-sulfur battery, according to one embodiment of the present invention, comprises a lithium salt, a nonaqueous solvent and an additive, wherein the lithium salt comprises lithium bis(fluorosulfonyl)imide (LiFSI) and a triflate-based compound, and the total molar concentration of LiFSI and the triflate-based compound in the electrolyte is 0.5-1.0 M.
Resumen de: WO2025116191A1
The present invention relates to a method and system for manufacturing high-purity black powder from a waste battery. The manufacturing method and system can easily separate and remove a positive electrode current collector from a positive electrode scrap by using a predetermined organic solvent, and can selectively remove a carbon-based compound such as a conductive material or a binder from black powder from which the positive electrode current collector is removed, thus enabling the manufacture of high-purity black powder from which metals derived from a positive electrode can be easily recovered. In addition, the manufacturing method and system have the advantage of being eco-friendly since the organic solvent used during the process is reused.
Resumen de: WO2025114885A1
An arrangement of cells for a battery module includes forming a basic unit of battery cells having a number of cells that equals a prime number, and the basic units are arranged to form the battery module. Each basic unit has three rows of cells arranged in a tangent arrangement, an inner row and adjacent outer rows, where the number of cells in the inner row and each of the outer rows is determined based on a breakdown of the prime number. The basic units are arranged with other basic units such that the cells of outer rows of adjacent units are in direct arrangement as are cells on the ends of rows of adjacent basic units. Battery modules arranged in this manner require fewer types of busbars to connect the cells of units in parallel and the units in series.
Resumen de: WO2025116597A1
The present invention relates to a positive electrode active material for a secondary battery, a positive electrode comprising same, a secondary battery, and a method for manufacturing same and, more specifically, to a positive electrode active material including a core and a lithium oxide-containing coating layer including nitrogen.
Resumen de: WO2025113586A1
Provided in the present disclosure are a battery management system, a battery pack, and an electrical apparatus. The battery management system comprises: a plurality of switch assemblies, each switch assembly being connected between a battery and a corresponding load, and said assemblies being used for establishing or severing a connection between the battery and the corresponding load; a sampling circuit, the sampling circuit comprising sampling branch circuits in one-to-one correspondence with the plurality of switch assemblies, and each sampling branch circuit being used for collecting the voltage at a sampling measurement point; a reference voltage module, which is used for providing a first reference voltage to a reference sampling point; and a sampling module, which is used for obtaining the voltage at each sampling measurement point relative to the reference sampling point; wherein when the plurality of switch assemblies further comprises switch assemblies in parallel, the sampling branch circuits comprise a pair of first sampling branch circuits, with one first sampling branch circuit being connected to one end of the switch assemblies in parallel, and the other first sampling branch circuit being connected to the other end of the switch assemblies in parallel.
Resumen de: WO2025113583A1
An electrode sheet, an electrode assembly, and a lithium ion battery. The electrode sheet (1) comprises a conductive current collector (10), an electrode active layer (20), and a tackifying layer (30), wherein the electrode active layer (20) covers a middle area of the conductive current collector (10) in a first direction, and the tackifying layer (30) at least covers a part of the surface of the side of the electrode active layer (20) facing away from the conductive current collector (10).
Resumen de: WO2025113581A1
The present application belongs to the technical field of battery materials, and in particular relates to a zinc diphosphide/zinc phosphate composite material, and a preparation method therefor and the use thereof. The zinc diphosphide/zinc phosphate composite material of the present application comprises zinc diphosphide, zinc phosphate, and a carbon-based material or a hybrid material thereof, wherein the zinc diphosphide is coated with the zinc phosphate and the carbon-based material or the hybrid material thereof. In the present application, amorphous zinc phosphate is utilized, and therefore the volume expansion of a battery during the processes of charging and discharging can be effectively relieved, and the cycling performance of the material can be improved; in addition, the carbon-based material or the hybrid material thereof coats the zinc diphosphide, and therefore the conductivity of the material can be improved, the rate capability can be enhanced, the problem of a reduction in conductivity due to the presence of zinc phosphate can be solved, and the battery has good rate capability and cycling stability. Moreover, by performing coating with the carbon-based material or the hybrid material thereof, the generation of white phosphorus during ball milling can be reduced, and the thermal stability of the material can be improved; and ball milling further promotes the connection of phosphorus-carbon covalent bonds, thereby improving the electrochemical performance whi
Resumen de: WO2025112443A1
A secondary battery, an electric device, a positive electrode active material and a preparation method therefor, and a positive electrode sheet, relating to the technical field of batteries. The secondary battery comprises a positive electrode sheet; the positive electrode sheet comprises lithium phosphate-containing positive electrode active particles, each lithium phosphate-containing positive electrode active particle comprises a central part and a surface part, and the surface part is continuously or discontinuously distributed on the surface of the central part; the thickness of the surface part is less than or equal to 10 nm, and the lithium content of the central part is greater than that of the surface part. The secondary battery has high cycle performance.
Resumen de: WO2025112421A1
A tab cutting mechanism and a battery assembly system. The tab cutting mechanism (10) comprises a supporting structure (100), a cutter assembly (200), an electrode assembly positioning assembly (300), and a first driving assembly (400); the cutter assembly (200) comprises a first member (210) and a second member (220), and the first member (210) is mounted on the supporting structure (100); the electrode assembly positioning assembly (300) is mounted on the supporting structure (100) and is configured to support and position a body portion (22) of an electrode assembly (20), and the first member (210) is used for supporting tab portions (21) of the electrode assembly (20); and the first driving assembly (400) is mounted on the supporting structure (100) and connected to the second member (220), and is configured to drive the second member (220) to move, so that the second member (220) matches the first member (210) to cut the tab portions (21). The tab cutting mechanism solves the problems of poor alignment, dislocation, and inconsistent external dimensions of the tab portions (21), so that the tab portions (21) are more regular, facilitating the subsequent addition of a housing (10a) to the electrode assembly (20), improving the yield rate of a battery (1).
Resumen de: WO2025112836A1
A power lead-out structure for a battery pack (1), the battery pack (1), and a vehicle. The power lead-out structure for the battery pack (1) comprises: a fixed platform (11), wherein an accommodating groove (11a) is formed in the fixed platform (11); and a lead-out busbar (121) accommodated in the accommodating groove (11a), wherein the lead-out busbar (121) comprises a positive electrode lead-out busbar and a negative electrode lead-out busbar and is fixed on the fixed platform (11).
Resumen de: WO2025112834A1
Provided are a solid electrolyte membrane, a preparation method therefor and the use thereof, belonging to the technical field of solid-state batteries. In the solid electrolyte membrane, a sulfide solid electrolyte is coated with a coating layer containing an aprotic Lewis acid, so as to target and stabilize Lewis alkaline reaction sites in the sulfide solid electrolyte, thus greatly reducing the probability of the sulfide solid electrolyte reacting with moisture in the air. In addition, the initial ionic conductivity of the prepared solid electrolyte membrane and the rate of change in the ionic conductivity thereof under a specific condition are limited, so that a prepared secondary battery to which the product is applied has an ideal initial discharge capacity and good cycle stability.
Resumen de: WO2025112386A1
A secondary battery and an electronic device. The secondary battery comprises a negative electrode sheet, the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector, and the negative electrode film layer comprises a negative electrode active material, wherein the negative electrode active material comprises a first carbon-based material and a second carbon-based material, the first carbon-based material has a pore structure, and the total pore area S2 of an internal region of the first carbon-based material is larger than the total pore area S1 of an external region of the first carbon-based material; and the second carbon-based material meets ID/IG≤0.140.
Resumen de: WO2025112378A1
A secondary battery and an electric device. The secondary battery comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector, wherein the negative electrode film layer has a first surface away from the negative electrode current collector and a second surface arranged opposite the first surface; the thickness of the negative electrode film layer is denoted as H; a region within a thickness range from the first surface of the negative electrode film layer to 0.3H is denoted as a first region, which comprises a first negative electrode active material; the first negative electrode active material comprises a first carbon-based material; and the first carbon-based material satisfies the condition that the total pore area S1 of an external region is less than the total pore area S2 of an internal region. The secondary battery has improved dynamic performance, and the volume distribution particle size Dv50 of the first carbon-based material is less than or equal to 15 μm.
Resumen de: WO2025112333A1
The present application relates to a battery cell (20) and a preparation method therefor, a battery (100) and an electric device. The preparation method for the battery cell (20) comprises: determining that the battery cell (20) is in an uncharged state; spraying an insulating material onto at least a partial region of the outer surface of a case (22) of the battery cell (20) by means of an electrostatic spraying method; curing the region, onto which the insulating material is sprayed, of the case (22), so as to obtain the battery cell (20) containing an insulating layer (24); and injecting an electrolyte into the battery cell (20) containing the insulating layer (24). In the preparation method for the battery cell (20) of the present application, by subjecting the battery cell (20) in the uncharged state to insulating spraying, which may be performed by means of an electrostatic spraying method, the utilization rate of a coating of the insulating layer (24) during a production process of the battery (100) can be improved, and the production costs can be reduced.
Resumen de: WO2025116590A1
According to one embodiment of the present invention, a positive active material for a lithium secondary battery, a preparation method therefor, a positive electrode comprising same, and a lithium secondary battery are provided, the positive active material comprising: a lithium compound represented by chemical formula 1; and a coating layer formed on the surface of the particles of the lithium compound, wherein the coating layer comprises carbon and a surface modifier, and the D/G band ratio, measured by means of Raman spectroscopy, on the surface of the positive active material is 0.7-0.89. Chemical formula 1 Li1+aTibMncO2-dXd In chemical formula 1, 0.1≤a≤0.5, 0.2≤b≤0.6, 0.2≤c≤0.6, 1.1≤(1+a)/(b+c)≤1.4, 0≤d≤0.2, and X is a halogen element.
Resumen de: WO2025116195A1
The present invention relates to an apparatus for releasing a bolt of a battery module and to a technology capable of not only rapidly releasing a bolt but also releasing bolts having different sizes by using one apparatus, in battery modules arranged and formed through coupling by a bolt. Specifically, the apparatus comprises a separation part (100) for performing a release operation of a bolt for fixing a battery module (10).
Resumen de: WO2025116194A1
The present invention relates to a method for preparing a Prussian blue positive electrode material for a sodium battery using a Taylor reactor and, more specifically, the method comprises: a first mixture preparation step of preparing a first mixture mixed with an iron chloride aqueous solution; a second mixture preparation step of preparing a second mixture mixed with a sodium ferrocyanide aqueous solution, a synthesis step of synthesizing a Prussian blue analog by introducing the mixture prepared in the first mixture preparation step and the mixture prepared in the second mixture preparation step into a Taylor reactor and allowing them to undergo a reaction under nitrogen injection conditions; an aging step of aging the Prussian blue analog prepared in the synthesis step; a washing and filtration step of washing and filtering the Prussian blue analog aged in the aging step with a washing agent; and a drying step of drying the Prussian blue analog washed and filtered in the washing and filtration step. The method for manufacturing a Prussian blue positive electrode material for a sodium battery, consisting of the processes above, exhibits excellent production efficiency with respect to the Prussian blue positive electrode material, and provides the Prussian blue positive electrode material that provides a sodium battery with improved charge/discharge efficiency and capacity retention rate.
Nº publicación: WO2025116551A1 05/06/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
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Resumen de: WO2025116551A1
An apparatus for diagnosing a battery, according to one embodiment of the present invention, comprises: a profile acquisition unit for acquiring a first differential profile based on a battery differential voltage and capacity that correspond to a charging process, and a second differential profile based on the battery differential voltage and capacity that correspond to a discharging process; and a control unit for calculating the number of charging peaks included in a first capacity section in the first differential profile, calculating the number of discharging peaks included in a second capacity section in the second differential profile, and diagnosing the state of the battery according to the number of charging peaks and the number of discharging peaks.
BOPI
Sede Electrónica
