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1802
resultados
Última actualización
14/10/2025 [07:10:00]
Resultados 750 a 775 de 1802
Resumen de: WO2025200435A1
A cathode active material, a positive electrode, a sodium-ion battery, a battery assembly, and an electric system. The cathode active material satisfies: the compaction rebound rate ε of the cathode active material ranging from 3% to 10%, wherein the compaction rebound rate ε=1-(compaction density after rebound/maximum compaction density). The stability and integrity of the structure of the material can be maintained during an electrochemical process, thereby significantly improving the cycling performance.
Resumen de: WO2025200731A1
The present application relates to the technical field of batteries, and discloses a negative electrode sheet (10), an electrochemical apparatus, and an electrical device. The negative electrode sheet (10) comprises a first active material layer (11), a first current collector (12), and a second active material layer (13); the first active material layer (11) comprises a first coating (111) and a second coating (112) provided between the first coating (111) and the first current collector (12); in a first direction (X1), a first end (112a) of the second coating (112) extends beyond a first end (111a) of the first coating (111), so that the first active material layer (11) has a first single-layer portion (M1); and/or, in a second direction (X2), a second end (112b) of the second coating (112) extends beyond a second end (111b) of the first coating (111), so that the first active material layer (11) has a second single-layer portion (M2); and the first direction (X1) is opposite to the second direction (X2). In the first direction (X1) or the second direction (X2) of the negative electrode sheet (10), the second coating (112) extends beyond the first coating (111). Thus, the problem of damage to the first current collector (12) due to two ends of the active material layer being prone to over-compression during rolling is solved, the probability of breakage of the negative electrode sheet (10) during rolling is reduced, and the production yield of the negative electrode sheet (
Resumen de: WO2025204674A1
This production method for a recycled positive electrode active material includes the following steps: (1) a step in which a positive electrode mixture containing a positive electrode active material and an activation treatment agent containing one or more alkali metal compounds are mixed to obtain a mixture; (2) a step in which the mixture is heated at a temperature T °C and a heated mixture is obtained; and (3) a step in which the heated mixture is heated at a temperature (1.6×T) °C or higher and the heated positive electrode active material is recovered.
Resumen de: WO2025200709A1
Disclosed in the present application are a terminal assembly of a battery cell, a battery cell, a battery assembly and an electrical apparatus. The terminal assembly comprises a terminal and a seal cap, a liquid injection channel being provided in the terminal, and the seal cap comprising a body portion and a connection protrusion; the body portion is in a welded fitting to the terminal so as to block the liquid injection channel, a welding seam being formed at a joint of the body portion and the terminal; the connection protrusion is arranged on the first end surface of the body portion facing away from the liquid injection channel in the thickness direction, and the connection protrusion is suitable for being connected to a busbar; the connection protrusion protrudes from the body portion so as to form a step for accommodating the welding seam, such that the connection protrusion protrudes by a height greater than or equal to the maximum height of the welding seam protruding from the first end surface.
Resumen de: WO2025200846A1
Provided in the present application are a secondary battery and an electronic device. The secondary battery comprises an electrode assembly, wherein the electrode assembly comprises a negative electrode sheet, a positive electrode sheet and a separator; the negative electrode sheet comprises a negative electrode current collector and a negative electrode material layer arranged on at least one surface of the negative electrode current collector; the negative electrode material layer comprises a silicon-carbon material; the silicon-carbon material comprises a substrate, a silicon coating layer and a carbon coating layer; the substrate comprises porous carbon and nano-silicon particles; the pores of the porous carbon contain the nano-silicon particles; and the silicon coating layer is arranged between the substrate and the carbon coating layer. Having the above characteristics, the silicon-carbon material can improve the dynamic performance and cycle performance of the secondary battery, and also enables the secondary battery to have a relatively high energy density.
Resumen de: WO2025206618A1
The present invention relates to a cathode active material capable of improving the performance of a lithium secondary battery and, to a cathode active material, a cathode comprising same, and a lithium secondary battery, the material comprising an olivine-structured lithium iron phosphate-based compound and a coating part, which comprises carbon (C) and is formed on the lithium iron phosphate-based compound, having a degree of graphitization of 1.00-1.50 according to relation 1 described in the present specification, and having a Dip(χ) of 0.160-0.185 according to relation 2 described in the present specification.
Resumen de: WO2025206059A1
The disclosed non-aqueous electrolyte secondary battery comprises: a positive electrode; a negative electrode that includes a negative electrode mixture layer; and a non-aqueous electrolyte. The negative electrode mixture layer comprises a negative electrode active material and a binder component. The binder component comprises a binder compound and a phosphorus-containing compound. The phosphorus-containing compound comprises at least one kind of phosphorus-containing group selected from the group consisting of a phosphate group, a phosphate base, a phosphonic acid group, and a phosphonic acid base. There are at least two but not more than five of the at least one kind of phosphorus-containing group included in the phosphorus-containing compound. The negative electrode active material contains a silicon-containing material.
Resumen de: WO2025200764A1
The present application provides a lithium ion battery and an electronic device using the lithium ion battery. The lithium ion battery comprises a positive electrode sheet and an electrolyte solution, wherein the positive electrode sheet comprises a nickel-cobalt-manganese ternary material, the particle size Dv10 of the nickel-cobalt-manganese ternary material is D1 μm, the particle size Dv90 of the nickel-cobalt-manganese ternary material is D2 μm, and the nickel-cobalt-manganese ternary material satisfies: 0.9≤D1≤4.8, and 1.2≤D2/D1≤6.6. The electrolyte solution comprises at least one of a compound of formula (I) having a structural formula (I) and a compound of formula (II) having a structural formula (II), at least one of a compound of formula (III) having a structural formula (III) and a compound of formula (IV) having a structural formula (IV), and a compound of formula (V) having a structural formula (V). On the basis of the total mass of the electrolyte solution, the sum of the mass percentages of the compound of formula (III) and the compound of formula (IV) is C%, and the electrolyte solution satisfies: 25≤C×(D2/D1)≤400. By means of a synergistic effect between the electrolyte solution and the nickel-cobalt-manganese ternary material, the intermittent cycling performance of the lithium ion battery in a high-voltage state can be ensured.
Resumen de: WO2025206060A1
The disclosed non-aqueous electrolyte secondary battery comprises: a positive electrode; a negative electrode that includes a negative electrode mixture layer; and a non-aqueous electrolyte. The negative electrode mixture layer comprises a negative electrode active material and a binder component. The binder component comprises a binder compound, a phosphorus-containing compound, and a polyvalent cation. The phosphorus-containing compound comprises at least one kind of phosphorus-containing group selected from the group consisting of a phosphate group, a phosphate base, a phosphonic acid group, and a phosphonic acid base. There are six of the at least one kind of phosphorus-containing group contained in the phosphorus-containing compound. The negative electrode active material contains a silicon-containing material.
Resumen de: WO2025200257A1
Embodiments of the present disclosure relate to the technical field of battery production, and disclose a formation negative pressure system and a control method therefor. The formation negative pressure system comprises a first positive pressure gas source, a negative pressure source, and a negative pressure module; the first positive pressure gas source is configured to provide dry gas; the negative pressure module comprises a gas nozzle; one end of the gas nozzle is selectively communicated with the first positive pressure gas source or the negative pressure source, and the other end of the gas nozzle is configured to be matched with a liquid injection hole of a battery cell; the negative pressure source is configured to be capable of vacuumizing the battery cell by means of the gas nozzle. According to the formation negative pressure system of the embodiments of the present disclosure, a small-range dry gas protection layer can be conveniently formed around the liquid injection hole of the battery cell by means of the first positive pressure gas source, and by means of the dry gas protection layer, even if a formation workshop is in a high-humidity environment, water vapor cannot flow into the battery cell, that is, it is not needed to dehumidify the whole formation workshop by means of a dehumidification system, thereby being conducive to reducing the production energy consumption of the battery cell.
Resumen de: WO2025206833A1
Disclosed in the present specification are: a composite to be applied to products or devices that are in an abnormal state or are likely to be in an abnormal state, so as to effectively respond to the abnormal state; and a fire extinguishing device. For example, the composite and the like are applied to an article including a plurality of the products or devices, so as to respond to abnormal heat generation, explosions and ignition that occur in any one device or product, and prevent or minimize the propagation of the heat generation, explosions and ignition in other adjacent devices or products. The composite and the like also exhibit excellent handling properties and storage stability. The present specification can also provide uses of the composite and the like.
Resumen de: WO2025204917A1
A secondary battery according to the present disclosure comprises a positive electrode, a negative electrode, and a nonaqueous electrolyte. At least one selected from the group consisting of the positive electrode, the negative electrode, and the nonaqueous electrolyte contains a polymer of an ethylenically unsaturated carboxylic acid compound and a polyalkylene glycol compound having three or more hydroxyl groups.
Resumen de: WO2025205592A1
An active material according to the present invention comprises core material particles and a coating part disposed on the surface of the core material particles. The coating part contains at least one of lithium sulfide and lithium halide. It is preferable that the coating part furthermore contains at least one of lithium sulfate and a lithium salt of phosphoric acid. The lithium salt of phosphoric acid is preferably lithium metaphosphate. The total amount of lithium halide and lithium sulfide is preferably 0.01-0.80 parts by mass with respect to 100 parts by mass of the core material particles. The lithium halide is preferably lithium chloride, lithium bromide, or lithium iodide. The coverage of the coating part is preferably 30-100%.
Resumen de: WO2025206242A1
Provided are a separator for an alkaline zinc secondary battery, and the alkaline zinc secondary battery, the separator including a porous substrate and a porous layer provided on one or both surfaces of the porous substrate, wherein: the porous substrate is a microporous membrane containing polyolefin; the porous layer includes a resin having at least one bonding group selected from the group consisting of an amide bond, an amide-imide bond, and an imide bond, and has a three-dimensional network structure; and the resin is additionally contained within the pores of the porous substrate.
Resumen de: WO2025204702A1
The present disclosure improves the reliability of a battery system. A battery system (1) according to the present disclosure comprises: a storage battery (11) having a period in which internal resistance decreases from the start of use to a specific time point in a life cycle; a temperature measurement unit (T1, 121) for measuring the temperature of the storage battery (11); and a heating unit (13) for heating the storage battery (11). The control target lower limit temperature of the storage battery (11) at the start of use is set higher than the control target lower limit temperature to be changed in the period.
Resumen de: WO2025205322A1
The present invention addresses the problem of providing: a carbon nanotube dispersion paste and a composite paste that have excellent pigment dispersibility and storage stability even at high pigment concentrations; and an electrode layer for a non-aqueous electrolyte secondary battery that has excellent performance (electric conductivity, battery performance, etc.). As the solution, provided is a carbon nanotube dispersion paste for a non-aqueous electrolyte secondary battery that contains at least a dispersion resin (A), carbon nanotubes (B), and a solvent (C), wherein: the dispersion resin (A) contains at least a structural unit (a-1); and the BET specific surface area of the carbon nanotubes (B) is 100 m2/g to 1000 m2/g.
Resumen de: WO2025205550A1
According to the present invention, an electrode body is held in an appropriate position with respect to a current collector even after positioning has been released. This method for manufacturing an all-solid-state battery includes: a lamination step in which an electrode body (3) and a current collector (4) having a plurality of through-holes (4a) disposed so as to surround an opening (42a) are alternately laminated onto a mounting surface (63a) of a mounting table (63), the lamination step including a first disposition step in which the current collector 4 is disposed such that each of a plurality of positioning members (64) that are in contact with the opening (42a) and that extend in a direction perpendicular to the mounting surface (63a) in positions matching each of the plurality of through-holes (4a) pass respectively through the corresponding plurality of through holes (4a), and a second disposition step in which the electrode body (3) is disposed in the opening (42a) of the current collector (4) so as to run alongside the plurality of positioning members (64), the first disposition step and the second disposition step being repeated a plurality of times; a fixing step in which the laminated state of the laminated electrode bodies (3) and current collectors (4) is fixed; and a removal step in which the positioning members (64) are removed from the through-holes (4a).
Resumen de: WO2025199737A1
Provided are a secondary battery and an electronic device. The secondary battery comprises an electrode assembly (100); the electrode assembly (100) comprises a positive electrode sheet (10), a negative electrode sheet (20) and a separator (30); the positive electrode sheet (10) comprises a positive electrode current collector and a positive electrode material layer located on at least one surface of the positive electrode current collector; a plurality of protrusions (11) are provided on the positive electrode sheet (10); in the thickness direction of the positive electrode sheet (10), the maximum height of a single protrusion (11) is h mm; the separator comprises a base film and a bonding layer; the coating weight of the bonding layer is X g/m 2, wherein h=-0.0044X2-0.0206X+0.1195, and 0.02≤h≤0.1195. By means of the arrangement, the weight of the secondary battery can be reduced, the hardness of the secondary battery can be increased, the wettability of an electrolyte can be enhanced, the cycle performance of the secondary battery can be improved, and the cost of the secondary battery can be reduced.
Resumen de: WO2025204671A1
A method for producing a recycled positive electrode active material including the following steps. Step (1): A step for obtaining a mixture by mixing a positive electrode mixture containing a positive electrode active material and an activation treatment agent containing one or more alkali metal compounds; Step (2): A step for heating the mixture to a temperature equal to or higher than the melting start temperature of the activation treatment agent in the presence of nitrogen having a flow rate of more than 0 L/min and at most 0.400 L/min per 1 L heating space to obtain a heated mixture; Step (3): A step for recovering the heated positive electrode active material from the heated mixture.
Resumen de: WO2025200261A1
A ventilation structure, an energy storage cabinet and an energy storage system. The ventilation structure comprises a mounting body and flow guide members, wherein the mounting body is configured to be assembled and connected to a ventilation opening of the energy storage cabinet; all flow guide assemblies are connected to the mounting body, and each group of flow guide assemblies comprise a plurality of flow guide members, which are arranged in a first direction intersecting with a ventilation direction of the energy storage cabinet, and on one side of the ventilation direction, each flow guide member is provided with a recessed cavity having an opening. The ventilation structure is additionally arranged at the ventilation opening, and when noise is transmitted outwards by means of the ventilation opening, the noise can be collided between the flow guide members so as to be eliminated, thereby achieving the effect of reducing noise. When the ventilation opening serves as an air inlet, the opening of the recessed cavity of each flow guide member is made to face the interior of the energy storage cabinet, such that an airflow, which is blown in from outside to inside, is normally guided and is smoothly blown into the energy storage cabinet, and noise transmitted from the inside to the outside can be absorbed by the recessed cavity of each flow guide member, thereby eliminating the noise. In this way, the flow guide members can not only perform flow guiding, but can also perfo
Resumen de: WO2025204898A1
A negative electrode (12) for a secondary battery is characterized by comprising an elongated negative electrode core (30), and a negative electrode mixture layer (32) disposed on the negative electrode core (30), the negative electrode mixture layer (32) having a first end region (12a) on one end side in the longitudinal direction and a second end region (12b) on the other end side in the longitudinal direction, the first end region (12a) exhibiting a smaller negative electrode plate charging expansion ratio than the second end region (12b), a ratio (E1/E2) of a negative electrode plate charging expansion ratio (E1) of the first end region (12a) to a negative electrode plate charging expansion ratio (E2) of the second end region (12b) being 0.9 or less, a difference between the negative electrode plate porosity of the second end region (12b) and the negative electrode plate porosity of the first end region (12a) being 3% or less.
Resumen de: WO2025199812A1
A battery (100), a battery pack (400), an electric device, and an energy storage device. The battery (100) comprises a case assembly (1), a top cover assembly (2), and at least one battery cell (3). An accommodating space (11) is formed in the case assembly (1), and an opening (12) is formed in one side of the case assembly (1) in a first direction. The top cover assembly (2) is arranged on the case assembly (1) and closes the opening (12), the top cover assembly (2) comprises at least two top covers (21) arranged in parallel in a second direction, each of the top covers (21) comprises a top cover body (21a) and an electrical connector (21b) which is arranged on the top cover body (21a) and capable of conducting electricity, and adjacent top covers (21) are connected to each other by means of a fixing connector (4). The at least one battery cell (3) is located in the accommodating space (11), and a tab (31) of the battery cell (3) is connected to the electrical connector (21b) of the top cover (21). The first direction is perpendicular to the second direction.
Resumen de: WO2025206915A1
The present invention relates to a battery system with identical wireless communication performance. A battery system that performs wireless communication by a frequency hopping method, according to an embodiment of the present invention, may comprise: a plurality of battery modules; a single antenna; a plurality of slave BMSs which are connected to the plurality of battery modules, respectively, generate a plurality of pieces of battery information by sensing states of the plurality of battery modules, and provide, to the single antenna, a plurality of sensing signals respectively including the plurality of pieces of battery information; and a master BMS which is connected to an antenna, receives, through the antenna, the plurality of sensing signals transmitted through the single antenna, acquires the plurality of pieces of battery information according to the plurality of sensing signals, generates, by using the plurality of acquired pieces of battery information, a plurality of control signals that control the plurality of battery modules, and transmits the plurality of control signals to the single antenna through the antenna.
Resumen de: WO2025204908A1
A secondary battery according to an example of an embodiment of the present invention comprises: an electrode body (14) that has a positive electrode (11) including a positive electrode core body (30) and positive electrode mixture layers (31), a negative electrode (12), and a separator (13), and that is formed by the positive electrode (11) and the negative electrode (12) being wound with the separator (13) interposed therebetween; an exterior body that accommodates the electrode body (14); and a sealing body that closes an opening of the exterior body. The positive electrode (11) has: a facing part (51) in which a positive electrode mixture layer (31) is formed on both surfaces of the positive electrode core body (30) and which faces the negative electrode (12) with the separator (13) interposed therebetween; and a non-facing part (51) which extends from a starting end (50x) of a facing part (50) to a winding center (Z) side of the electrode body (14), the facing part (50) facing a starting end (12x) of the negative electrode (12) located on a winding start side of the electrode body (14) with the separator interposed therebetween. The non-facing part (51) is characterized in that an insulating layer (52) is formed on both surfaces of the positive electrode core body (30).
Nº publicación: WO2025203956A1 02/10/2025
Solicitante:
SUMITOMO RIKO COMPANY LTD [JP]
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Resumen de: WO2025203956A1
Provided is a cooling heat exchanger having a novel structure with which a double-sided cooling structure having a cooling surface on both sides is realized in a simple structure, and with which excellent cooling performance can be stably obtained. A cooling heat exchanger 10 has formed in the interior thereof a cooling channel 28 through which a cooling heat medium flows, and the cooling heat exchanger cools a cooling object 62 that is layered on a cooling surface 32 provided on the surface of the cooling heat exchanger. A hollow outer wall member 12 having the cooling channel 28 therein is provided. A pair of cooling wall parts 30, 30 each have the cooling surface 32 on a surface of the cooling wall parts, and the cooling wall parts are provided to mutually opposing sections of the outer wall member 12. In an internal region 28 of the outer wall member 12, arranged is a plate-like inner fin 34 bisecting the internal region 28 in the opposing direction of the pair of cooling wall parts 30, 30. A first projection 48a and a second projection 48b, each protruding to opposing surfaces, are formed integrally in the inner fin 34.
BOPI
Sede Electrónica
