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1247
resultados
Última actualización
07/01/2026 [07:30:00]
Resultados 25 a 50 de 1247
Resumen de: WO2026000396A1
A battery cell (7), a battery (2) and an electric device (1). The battery cell (7) comprises an electrode assembly (10). The electrode assembly (10) comprises a positive electrode sheet (13). The positive electrode sheet (13) comprises a positive electrode film layer (132), a positive electrode current collecting part (131), and a positive electrode tab (111), wherein the positive electrode film layer (132) is arranged on at least one side of the positive electrode current collecting part (131) in the direction of thickness of the positive electrode sheet (13); and the positive electrode tab (111) is arranged on at least one side of the positive electrode current collecting part (131) in a first direction. The positive electrode film layer (132) comprises a positive electrode active material, wherein the positive electrode active material comprises a lithium-containing material of an olivine structure. The single-sided coating weight of the positive electrode film layer (132) ranges from 200 mg/1540.25 mm2 to 400 mg/1540.25 mm2. In a second direction, the distance between a first point on the positive electrode current collecting part (131) and the positive electrode tab (111) closest to the first point is less than or equal to 300 mm, the first point being any point on the positive electrode current collecting part (131). The first direction, the second direction, and the direction of thickness of the positive electrode sheet (13) are mutually perpendicular. The structure ca
Resumen de: WO2026000364A1
A secondary battery and an electric device. A negative electrode sheet in the secondary battery comprises a negative electrode current collector and a negative electrode film layer, wherein the negative electrode film layer is arranged on at least one side of the negative electrode current collector, and the negative electrode film layer comprises a negative electrode active material. The negative electrode active material comprises a first graphite with a Dv50 particle size of 2.2-7.7 μm. The electrolyte comprises an organic solvent and an organic additive. The organic solvent comprises a first solvent which comprises a cyclic carbonate, and the mass content of the first solvent is 25-40% based on the total mass of the organic solvent. The organic additive comprises a first additive and a second additive, wherein the first additive comprises vinylene carbonate, and the second additive comprises an ethylene carbonate derivative, and the mass percentage of the first additive in the electrolyte is 2-10% and the mass percentage of the second additive in the electrolyte is 0.3-6% based on the total mass of the electrolyte.
Resumen de: WO2026000605A1
The present application provides a battery pack case, a battery pack and a vehicle. The battery pack case comprises: a case body provided with a case body mounting cavity, wherein a side portion of the case body is provided with a liquid outlet used for mounting a liquid outlet pipe; and a liquid outlet structure provided with a communication opening and a liquid outlet cavity which are communicated with each other. The case body mounting cavity is communicated with the liquid outlet, a first horizontal plane where the communication opening is located is higher than the upper surfaces of a plurality of battery cells and the bottom of the liquid outlet cavity, and a second horizontal plane where the bottom end of the liquid outlet is located is lower than the first horizontal plane.
Resumen de: WO2026000394A1
The present application relates to a battery cell, a battery device and an electrical device. The battery cell comprises a casing, an electrolyte and an electrode assembly, wherein the casing comprises a casing body and an end cover; the electrolyte and the electrode assembly are accommodated in the casing body, the casing body has an opening, and the end cover covers the opening; the electrode assembly comprises a positive electrode sheet and a negative electrode sheet; the positive electrode sheet comprises a positive electrode current collector, and a positive electrode film layer which is disposed on at least one side of the positive electrode current collector in the direction of thickness of the positive electrode sheet and which includes a positive electrode active material, the positive electrode active material comprising a lithium-containing phosphate having an olivine structure; the negative electrode sheet comprises a negative electrode current collector, and a negative electrode film layer which is disposed on at least one side of the negative electrode current collector in the direction of thickness of the negative electrode sheet and which includes a negative electrode active material, wherein the discharge capacity per unit area of the positive electrode film layer ranges from 2.0 mAh/cm2 to 3.7 mAh/cm2; and the dimension of the positive electrode film layer in a first direction ranges from 75 mm to 105 mm, the first direction being parallel to a direction in
Resumen de: WO2026000561A1
A top cover assembly, a single battery, and a battery pack. The top cover assembly comprises a current collecting disc (10), a plastic member (20), and a conductive terminal (30). The plastic member (20) is connected to the current collecting disc (10), and the plastic member (20) is configured with a through hole (210). The conductive terminal (30) is connected to the side of the plastic member (20) away from the current collecting disc (10). The conductive terminal (30) is configured with an abutting portion (310) extending in the direction of the current collecting disc (10). The abutting portion (310) passes through the through hole (210) and abuts against the current collecting disc (10).
Resumen de: WO2026000594A1
A cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material, a preparation method therefor, and a use thereof. The cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material has the following chemical formula: Li(NixMn1-x)MgyO2, where 0.1 ≤ x ≤ 0.5 and 0.01 ≤ y ≤ 0.1. The preparation method comprises: (1) mixing a nickel salt, a manganese salt, a magnesium salt, and deionized water to obtain a metal salt solution; (2) adding the metal salt solution, a precipitant solution, and a complexing agent solution into a base liquid in parallel flow and carrying out co-precipitation reaction, so as to obtain a lithium-rich manganese-based precursor; (3) mixing the lithium-rich manganese-based precursor and a lithium salt and performing primary calcination, so as to obtain a lithium-rich manganese-based intermediate; and (4) mixing the lithium-rich manganese-based intermediate and a lithium salt solution, and performing solid-liquid separation and then secondary calcination, so as to obtain a cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material. The provided cobalt-free, magnesium-doped lithium-rich manganese-based positive electrode material overcomes the shortcomings of conventional modification methods and improves the electrochemical performance of positive electrode materials.
Resumen de: WO2026000566A1
The present application relates to the technical field of batteries, and discloses a tape application method for a tab, a battery, and a tape application apparatus for a tab. The tape application method for a tab can enhance the bonding reliability between adhesive tapes and tabs. The tape application method for a tab comprises: placing a bare cell on a tape application tool, and enabling a tape application pending surface of a tab on the bare cell to be located at a position corresponding to an unwinding device, wherein the unwinding device can carry an adhesive tape; controlling the unwinding device to place the adhesive tape at a position corresponding to the tape application pending surface; and controlling an airflow generator to generate a pressing airflow towards the tape application pending surface for the adhesive tape, so that the adhesive tape is bonded to the tape application pending surface under the action of the pressing airflow. The tape application method for a tab provided in the present application is used for applying adhesive tapes onto tabs of bare cells.
Resumen de: WO2026000584A1
A battery (100) and an electric device (1000). The battery (100) comprises a case (10), a heat exchange member (104), and battery cells (20), and an accommodating space is formed in the case (10); the battery cells (20) are arranged in the accommodating space; the heat exchange member (104) comprises a heat exchange section (1041), the heat exchange section (1041) is arranged on one side of the wall surface of the battery cells (20) and is used for performing heat exchange with the battery cells (20), cavities (1042) are provided in the heat exchange section (1041), and there are multiple cavities (1042) arranged in a first direction, the first direction being perpendicular to the wall surface.
Resumen de: WO2026000537A1
The present invention relates to the technical field of batteries, and provides a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electric device. In the positive electrode active material, the content change of Fe2+ satisfies Δn≥0.1, wherein Δn=n1-n2, where n1 is the content of Fe2+ in the positive electrode active material before charging; n2 is the content of Fe2+ in the positive electrode active material when the material is charged to 4.0 V; and the content of Fe2+ = the amount of substance of Fe2+ in the positive electrode active material/(the amount of substance of Fe2+ in the positive electrode active material + the amount of substance of Fe3+ in the positive electrode active material). Therefore, by means of the positive electrode active material, a battery loaded with same is allowed to have a good energy density.
Resumen de: WO2026000612A1
An energy storage container (1), comprising: a container body (10), and a top cover (11) and a bottom cover (12), which are arranged opposite each other, wherein the container body (10) is provided with a battery compartment (14), and the top cover (11) and the bottom cover (12) respectively surround the top and bottom of the battery compartment (14); a plurality of battery clusters (20), which are placed in the battery compartment (14); and a fire-fighting system (30), which comprises a plurality of fire-fighting devices (31), wherein the plurality of fire-fighting devices (31) are evenly distributed between the plurality of battery clusters (20) and the top cover (11).
Resumen de: WO2026000391A1
A battery cell, a battery device, and an electric device. The battery cell comprises an electrode assembly and an electrolyte. The electrode assembly comprises a first electrode sheet and a second electrode sheet. The first electrode sheet and the second electrode sheet each comprise a coating portion and tabs. The coating portion is coated with an active material layer, and the tabs are not coated with the active material layer. One of the first electrode sheet and the second electrode sheet is a positive electrode sheet, and a positive electrode active material of the positive electrode sheet comprises lithium-containing phosphate having an olivine structure. The coating portion of the first electrode sheet comprises first straight sections, and the coating portion of the second electrode sheet comprises second straight sections. The first straight sections and the second straight sections are stacked in the thickness direction of the electrode assembly. The ratio of the number of the tabs of the first electrode sheet to the number of the first straight sections of the first electrode sheet is 0.5 to 2. An organic solvent of the electrolyte comprises a linear carboxylic ester solvent. The mass content of the linear carboxylic ester solvent in the organic solvent is 8% to 90%. The present application can improve the use reliability and cycle performance of battery cells.
Resumen de: WO2026000399A1
A battery (2) and an electrical apparatus. The battery (2) comprises a plurality of battery cells (10) and a first busbar component (30a). The plurality of battery cells (10) are arranged along the thickness direction of each battery cell (10), and the battery cells (10) each comprise a housing (12) and an electrode assembly (11) accommodated in the housing. The expansion pressure of each battery cell (10) in the thickness direction is 0.5 MPa to 2.4 MPa. The first busbar component (30a) is electrically connected to at least two battery cells (10) arranged in the thickness direction, and the first busbar component (30a) is of a multi-layer structure. The electrode assembly comprises a positive electrode plate (111), a negative electrode plate (112), and a separator (113) located between the positive electrode plate (111) and the negative electrode plate (112). The positive electrode plate (111) comprises a positive electrode current collector (1111) and a positive electrode film layer (1112) provided on at least one side of the positive electrode current collector (1111). The positive electrode film layer (1112) comprises a positive electrode active material. The positive electrode active material comprises a lithium-containing phosphate having an olivine structure. The negative electrode plate (112) comprises a negative electrode current collector (1121) and a negative electrode film layer (1122) provided on at least one side of the negative electrode current collector (1121
Resumen de: WO2026000103A1
The present application discloses a cylindrical battery cell, a battery, and an electric device. The cylindrical battery cell comprises a casing and an electrode assembly. The cylindrical battery cell has a diameter greater than or equal to 40 mm. At least part of the electrode assembly is accommodated in the casing. The electrode assembly comprises a positive electrode sheet, a negative electrode sheet, and a separator. The positive electrode sheet, the negative electrode sheet, and the separator are wound. The separator separates the positive electrode sheet from the negative electrode sheet. A negative electrode active material of the negative electrode sheet comprises at least one of a silicon element and a carbon element. A gap is formed between the positive electrode sheet and the negative electrode sheet, the gap extends in a winding direction of the electrode assembly, and the radial size of the gap is 5-60 μm.
Resumen de: WO2026000096A1
Provided are a secondary battery and an electronic device. The secondary battery comprises a packaging pouch, an electrode assembly and a first conductive plate. The packaging pouch comprises an accommodating part and a first sealing edge. The electrode assembly is disposed in the accommodating part and comprises a first electrode sheet. The first electrode sheet comprises a first current collector and a first active material layer. The first conductive plate is electrically connected to the first current collector and extends out of the packaging pouch from the first sealing edge. The direction in which the first conductive plate extends out of the electrode assembly is a first direction; the first electrode sheet comprises a first edge and a second edge which are arranged opposite each other in the first direction. The first edge is closer to the first sealing edge than the second edge, and the first electrode sheet is provided with at least one first recess at the second edge. The direction of thickness of the electrode assembly is a second direction; the first recess penetrates the first current collector and the first active material layer in the second direction. The projection of the at least one first recess in the second direction forms a projected area; the width of the projected area is W1, and the width of the electrode assembly is W0, where 15%≤W1/W0≤40%. The secondary battery has relatively high reliability and safety.
Resumen de: WO2026000305A1
An electrode assembly, a battery, and an electric device. The electrode assembly is of a winding structure and comprises a first electrode sheet and a second electrode sheet, and a second winding end section of the second electrode sheet is away from a winding center of the winding structure relative to a first winding end section of the first electrode sheet; the second winding end section comprises a second winding end; the electrode assembly comprises a first winding region, the first winding region is a region covered by a ray from the winding center to the second winding end that rotates a radian of π/3 around the winding center in the winding direction, and a first support member is provided in the first winding region. The first support member is provided in the first winding region, so that when the electrode assembly expands to abut against the side wall of a housing, the first support member can provide support for the first winding region. In a further cycle process, the expansion and deformation of the electrode assembly in the first winding region are inhibited, thereby reducing the risk of the outer electrode sheet of the first winding region breaking due to expansion and pulling, and prolonging the service life of the battery.
Resumen de: WO2026000283A1
A high-entropy metal oxide positive electrode material and a preparation method therefor, and a sodium-ion battery. The chemical formula of the high-entropy metal oxide positive electrode material is NaxNiaFebMncM1dM2eM3fM4gO2, wherein 0.8≤x≤1.05, 0.1≤a≤0.2, 0.1≤b≤0.2, 0.1≤c≤0.2, 0≤d≤0.25, 0≤e≤0.25, 0≤f≤0.25, and 0≤g≤0.25; d, e, f, and g cannot be 0 at the same time; a+b+c+d+e+f+g=1; and M1, M2, M3, and M4 are each independently selected from Li, Mg, Cu, Zn, Ca, V, Al, or Zr. A plurality of specific types of low-cost metal elements are introduced into the layered oxide positive electrode material by using a high-entropy strategy; therefore, the structure of the O3-type material can be stabilized, and the stability of the material during a cycling process is improved.
Resumen de: WO2026000106A1
A battery cell, a battery, and an electric device. The battery cell comprises a casing, an electrode assembly, a support member and an insulating member. The casing has a first wall, the electrode assembly is accommodated in the casing, and the support member is arranged between the electrode assembly and the first wall. At least part of the insulating member is arranged between the electrode assembly and the support member; the support member is welded to the insulating member, and has a welding mark formed thereon; at least part of the insulating member is arranged between the electrode assembly and the support member, and at least part of the welding mark is located on the surface of the side of the support member facing away from the insulating member; alternatively, the support member is arranged between the insulating member and the electrode assembly, and at least part of the welding mark is located on the surface of the side of the insulating member facing away from the support member. The battery cell provided in the embodiments helps reduce the risk of welding slag entering the interior of the electrode assembly and causing damage to the electrode assembly, and reduces the risk of lithium plating in the electrode assembly, thereby facilitating improvement to the reliability of the battery cell.
Resumen de: WO2026000253A1
A battery cell, a secondary battery and an electronic device. The battery cell comprises an electrode assembly, a first tab and a second tab, wherein the electrode assembly comprises a first straight section, a first bent section, a second straight section and a second bent section, which are connected in sequence; the electrode assembly further comprises a first electrode sheet, a second electrode sheet and a separator; the first electrode sheet comprises a first current collector, a first active material layer and a second active material layer, the first active material layer being connected to a first inner surface, and the second active material layer being connected to a first outer surface; the first tab comprises a first connecting portion connected to the first electrode sheet; the second tab comprises a second connecting portion connected to the second electrode sheet; and in a first direction, the projection of a first starting end and/or the projection of a second starting end are/is located on the side of the first connecting portion away from the first bent section, and/or the projection of a first ending end and/or the projection of a second ending end are/is located on the side of the second connecting portion away from the second bent section. The battery cell facilitates an increase in energy density.
Resumen de: WO2026000244A1
A battery health monitoring system (100) and a vehicle. The battery health monitoring system (100) comprises: a battery (1), the battery (1) comprising a casing (11) and a battery main body (12) located in the casing (11), and the casing (11) being provided with a monitoring hole (110); a monitoring unit (2), the monitoring unit (2) comprising a first electrode sheet (21) sealingly connected to the monitoring hole (110), a second electrode sheet (22) spaced apart from the first electrode sheet (21), and a capacitance monitor electrically connected to both the first electrode sheet (21) and the second electrode sheet (22), and the first electrode sheet (21) and the casing (11) forming an enclosed space sealing the battery main body (12). By means of measuring in real time a capacitance value, a change in capacitance value, or a rate of change of a capacitance value between the first electrode sheet (21) and the second electrode sheet (22), the battery health monitoring system (100) acquires a gas generation condition of the interior of the battery, and the sensitivity is high, so that determination can be made in a timely manner in the early stages of a decrease in the health of the battery, and a user is alerted to pay close attention to the health of the battery.
Resumen de: WO2026000533A1
The present application provides a heat exchange assembly, a battery module, and a battery pack. The heat exchange assembly comprises a first liquid guide tube, a second liquid guide tube, and heat exchange tubes. A liquid inlet is formed at the first liquid guide tube. A liquid outlet is formed at the second liquid guide tube. In the height direction of a battery cell, the second liquid guide tube is arranged above the first liquid guide tube. Both ends of each heat exchange tube are respectively communicated with the first liquid guide tube and the second liquid guide tube. The heat exchange tubes are configured to be attached to a side surface of the battery cell. In a first direction, a plurality of heat exchange tubes are arranged at intervals. The first direction is perpendicular to the height direction of the battery cell, and in the height direction of the battery cell, the first liquid guide tube is configured to be arranged below the battery cell.
Resumen de: WO2026000759A1
A modified carboxymethyl cellulose salt, a negative electrode dispersant, a negative electrode sheet, a battery cell, a battery, and an electric device. The battery cell comprises a negative electrode sheet; the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer provided on at least one side of the negative electrode current collector; the negative electrode film layer comprises a negative electrode active material and a negative electrode dispersant; the negative electrode dispersant comprises a modified carboxymethyl cellulose salt, the modified carboxymethyl cellulose salt comprises a conductive group and a flexible group; the flexible group comprises at least one of a substituted or unsubstituted ether group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted polyolefin group, a substituted or unsubstituted amide group, and a substituted or unsubstituted ester group. The negative electrode film layer has good flexibility, is not prone to cracking, and has good electrical conductivity.
Resumen de: WO2026000568A1
The present application provides a battery cell, a battery, and an electric device. The battery cell comprises a casing, an electrode assembly, and an end cover assembly; the casing comprises a casing body and a reinforcing portion; the casing body is provided with an accommodating cavity that is provided with an opening; the reinforcing portion is arranged on the surface of the casing body facing the accommodating cavity; the electrode assembly is arranged in the accommodating cavity; a gap is formed between the electrode assembly and at least part of the casing body; the reinforcing portion is located in the gap; the end cover assembly is arranged at the opening of the casing and is electrically connected to the electrode assembly. The battery cell of the embodiments of the present application can reasonably use the internal space of the battery cell to enhance the strength of the casing without increasing the size of the battery cell.
Resumen de: WO2026000560A1
Provided in the present application is an energy storage container, comprising: a container body, wherein the container body comprises a top cover and a bottom cover, which are arranged opposite each other, and a plurality of battery clusters are provided inside the container body; and a dehumidifier, wherein the length of the dehumidifier and the width of the dehumidifier are both greater than the thickness of the dehumidifier, the dehumidifier is arranged between the bottoms of the plurality of battery clusters and the bottom cover, and the direction of the thickness of the dehumidifier is made to coincide with the direction of the height of the container body.
Resumen de: WO2026000536A1
A positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery, and an electrical device. The positive electrode active material comprises secondary particles, wherein the secondary particles are formed by the aggregation of primary particles; the secondary particles comprise open pores and closed pores; and the open pore porosity P0 of the positive electrode active material accounts for 25%-85% of the total porosity Pt of the positive electrode active material.
Nº publicación: WO2026000502A1 02/01/2026
Solicitante:
CENTRAL SOUTH UNIV [CN]
\u4E2D\u5357\u5927\u5B66
Resumen de: WO2026000502A1
Disclosed are an ionic liquid-based perfluorinated high-voltage-resistant lithium battery electrolyte and a preparation method therefor. The high-voltage-resistant electrolyte is composed of an imidazolyl ionic liquid, a lithium salt, and an electrolyte additive. The ionic liquid-based electrolyte has relatively reversible and stable lithium stripping/deposition performance, exhibits good compatibility with a lithium metal/graphite negative electrode, and can also form a highly fluorinated stable electrode-electrolyte interface (CEI/SEI layer), thus improving the compatibility of the ionic liquid electrolyte with a high-voltage lithium cobaltate positive electrode, and effectively inhibiting dendrite formation and oxidation dissolution of the electrolyte, thereby achieving extremely high cycle stability and Coulombic efficiency of a lithium battery under high voltage conditions.
BOPI
Sede Electrónica
