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1821
resultados
Última actualización
13/06/2025 [06:49:00]
Resultados 425 a 450 de 1821
Resumen de: WO2025113609A1
A top cover assembly (100) of a battery and a battery having same. The top cover assembly (100) of the battery comprises: a cover body (1), a mounting hole (11) being provided in the cover body (1); an explosion-proof valve (2) arranged in the mounting hole (11) and blocking the mounting hole (11); and a protection structure (3) comprising a protective film (31) and an adhesive layer (32). The protective film (31) is attached to the cover body (1) by means of the adhesive layer (32) and is opposite the mounting hole (11); the adhesive layer (32) extends in the circumferential direction of the mounting hole (11); and the width of the adhesive layer (32) is a, the distance between the outer contour of the adhesive layer (32) and the inner peripheral wall of the mounting hole (11) is b, and a≥b and 0.5 mm≤b≤1.5 mm. In the top cover assembly (100) of the battery, by defining a≥b and 0.5 mm≤b≤1.5 mm, the bonding area between the adhesive layer (32) and the cover body (1) can be ensured, the fitting strength between the protection structure (3) and the cover body (1) can be improved, the reliability and stability of the connection between the protective film (31) and the cover body (1) can be ensured, the protection structure (3) can be prevented from falling off of the cover body (1), and the production costs of the top cover assembly (100) of the battery can be saved on.
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: WO2025116466A1
The present invention relates to: a silicon carbon composite; a negative electrode composition, a negative electrode, a lithium secondary battery, a battery module, a battery pack, and an electric vehicle comprising same; and a method for manufacturing the silicon carbon composite, wherein the silicon carbon composite comprises silicon and carbon, the content of silicon is 40 to 60 parts by weight with respect to 100 parts by weight of the silicon carbon composite, the content ratio (C/Si) of carbon to silicon is 30 or more after 10 seconds of etching time under the condition of Ta2O5 being etched at a rate of 0.15 nm/s during XPS analysis and is less than or equal to 15 after 1,000 seconds of etching time, and the oxygen content is less than or equal to 10 parts by weight with respect to 100 parts by weight of the silicon carbon composite.
Resumen de: WO2025116432A1
A system for extracting active material residue from an assembly for coating an electrode with an active material layer, comprises a mobile tank configured to hold active material residue, a conduit attached to the mobile tank and connectable to the assembly, and a pumping device configured to apply a negative pressure to the mobile tank for sucking active material residue from the assembly through the conduit.
Resumen de: WO2025116701A1
The battery module according to an embodiment of the present invention comprises: a battery cell assembly formed by stacking multiple battery cells; a module frame for containing the battery cell assembly, the module frame comprising a bottom portion; and a phase change material layer disposed on the lower portion of the battery cell assembly. The phase change material layer is configured such that a part thereof corresponding to a battery cell which has undergone a high-temperature phenomenon among the multiple battery cells, is melted and removed, and the bottom portion is opened by the removed part of the phase change material layer, thereby discharging the battery cell which has undergone a high-temperature phenomenon.
Resumen de: WO2025114738A1
The present disclosure provides a means capable of improving capacitance characteristics of a closed-type lithium oxygen battery. Disclosed is a lithium-containing composition including a lithium oxide, a catalyst, and a conductive polymer. The composition is useful as a positive electrode material for a closed-type lithium oxygen battery.
Resumen de: WO2025112673A1
A battery pack (1000) and an electric device (2000). The battery pack (1000) comprises: a battery management system (10); a plurality of battery modules (20); a circuit board (30); and a connector assembly (40), wherein the plurality of circuit boards (30) are sequentially connected in series to form a circuit board string, and the circuit board string is connected to the battery management system (10) so as to transmit working condition data of battery cells (22) in the battery modules (20) to the battery management system (10).
Resumen de: WO2025112617A1
Disclosed in the present application are a hot-pressing roller mechanism, a pressing roller mechanism, an adhesive application device and a battery production system. The hot-pressing roller mechanism comprises a hot-pressing roller and a heating assembly, wherein the heating assembly and the hot-pressing roller are spaced apart from each other; and the heating assembly is configured to perform non-contact heating on the hot-pressing roller. By means of non-contact heating, no structural member is introduced to the surface of the hot-pressing roller, such that the phenomenon of foreign matter being introduced to the surface of an electrode sheet during the process of the hot-pressing roller performing hot pressing on the electrode sheet can be alleviated, thus increasing the adhesive application yield. The hot-pressing roller mechanism is used to perform hot pressing on an electrode sheet to which an adhesive has been applied, and to smooth and compact an adhesive tape on the surface of the electrode sheet, thus enhancing the bonding tightness between the adhesive tape and the electrode sheet, and increasing the adhesive application yield.
Resumen de: WO2025112590A1
A signal sampling circuit, a battery management system, a battery system and an electrical apparatus. The signal sampling circuit (10) comprises a first voltage divider module (11), a first switch module (12) and a sampling module (13), wherein the first voltage divider module (11) and the first switch module (12) are connected in series between a point to be tested and a reference signal terminal of the sampling module (13), a first control terminal of the first switch module (12) is connected to a first power supply terminal, a second control terminal of the first switch module (12) is connected to an enable signal terminal of the sampling module (13), the sampling module (13) is connected to a first reference ground, the first voltage divider module (11) is internally provided with a sampling point, and the sampling module (13) is used for collecting a sampling signal at the sampling point. The present application helps to reduce the cost of signal sampling circuits.
Resumen de: WO2025112394A1
A method for preparing a positive electrode material, a positive electrode material, a positive electrode sheet, a battery and an electric device. The method for preparing a positive electrode material comprises: mixing precursor lithium manganese iron phosphate, a carbon source and a source of a doping element in a solvent, drying and sintering the mixture, so as to obtain a positive electrode material. The positive electrode material comprises an inner core and a coating layer coating the inner core, wherein the inner core comprises LiMnxFe1-xPO4, where 0＜x＜1; and the coating layer comprises carbon and a doping element, with the doping element comprises one or more of an IIA-group element, an IIIA-group element, an IVA-group element and a transition metal element. The method reduces the powder resistivity and specific surface area of the positive electrode material, and improves the gram capacity and cycle performance of a battery.
Resumen de: WO2025112390A1
A battery cell (500), a battery pack (400), and an electric device (1000). The battery cell (500) comprises a casing (510), an electrode assembly (520), and an adapter (100). The casing (510) is provided with two electrode terminals (511, 512). The electrode assembly (520) comprises two tabs (521, 522) having opposite polarities. The adapter (100) is provided between the electrode assembly (520) and the casing (510) and comprises two adapter portions (110, 120). The first adapter portion (110) is connected to the first electrode terminal (511) and the first tab (521). The second adapter portion (120) is electrically connected to the second electrode terminal (512) and the second tab (522). Part of the first adapter portion (110) and part of the second adapter portion (120) overlap in the axial direction of the battery cell (500).
Resumen de: WO2025112224A1
The present application relates to the technical field of batteries, and provides a battery cell holder and a battery module. The battery cell holder is provided with a first direction and a second direction; the battery cell holder comprises: a holder body; a plurality of first busbar mounting grooves and a plurality of second busbar mounting grooves are formed in the holder body; the plurality of first busbar mounting grooves and the plurality of second busbar mounting grooves are sequentially arranged in the first direction; and the plurality of first busbar mounting grooves and the plurality of second busbar mounting grooves are arranged at intervals in the second direction, wherein each first busbar mounting groove comprises a first mounting sub-groove and a second mounting sub-groove, and the first mounting sub-groove and the second mounting sub-groove at least partially overlap in the second direction.
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: WO2025116663A1
The present invention relates to an aging rack in which a secondary battery is accommodated and an aging process is performed, and an aging system including same, and more particularly, to an aging rack capable of providing temperature uniformity regardless of the position of a secondary battery, and an aging system including same. According to one embodiment of the present invention, an aging rack and an aging system including same may be provided, the aging rack comprising a blower for forcibly supplying air from the rear to the front of a tray accommodation part through a plurality of perforated nozzles.
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: 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.
Nº publicación: WO2025112327A1 05/06/2025
Solicitante:
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
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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.
BOPI
Sede Electrónica
