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1893
resultados
Última actualización
04/10/2025 [08:24:00]
Resultados 650 a 675 de 1893
Resumen de: WO2025204681A1
A battery (10) comprises: an electrode body (14) in which a positive electrode (11) and a negative electrode (12) are wound via a separator (13); an outer casing (20) that has a cylindrical part (20B) including a groove part (28) recessed inward in the radial direction over the entire circumference in the circumferential direction, and houses the electrode body (14); a sealing body (19) that is fixed, through crimping, to an opening of the outer casing (20) via a gasket (24); and one or more pressing members (33) that are positioned between the groove part (28) and the sealing body (19) in the axial direction and that press the gasket (24) toward the sealing body (19) side.
Resumen de: WO2025205755A1
In the present invention, a negative electrode (12) comprises: a long negative electrode core body (30); and a negative electrode mixture layer (31), which contains, as a negative electrode active material, a first graphite species having a particle interior porosity of 5% or less and a second graphite species having a particle interior porosity of 8 to 20%, and which is provided on the negative electrode core body (30). The negative electrode (12) constitutes a wound electrode body (14). The negative electrode mixture layer (31) is divided into a central region (33) positioned in the widthwise central region of the negative electrode core (30), and end regions (34) positioned closer to both widthwise end sides of the negative electrode core (30) than the central region (33). The ratio (α/β) of the porosity of the central region (33) (α) to the porosity of the end region (34) (β) is greater than 1.0 and 2.0 or less.
Resumen de: WO2025201436A1
An electrolyte and a battery. The electrolyte comprises a lithium salt, an organic solvent, a first functional additive and a second functional additive, wherein the structural formula of the first functional additive is (I); and the structural formula of the second functional additive is a fluorine-substituted olefin, with the fluorine-substituted olefin comprising the following structural unit: (II), wherein R7 comprises a fluorine atom. In the electrolyte, by introducing two functional additives having a specific structure, and under the combined use of the two functional additives, stable growth of an interface SEI film of a negative electrode, especially a silicon negative electrode, can be promoted, thereby improving the interface stability of the negative electrode; in addition, gas production of a positive electrode can also be further reduced, thereby optimizing the interface stability of the positive electrode. Therefore, the electrolyte can further improve the electrochemical performance, such as the cycle performance and rate capability, of the battery.
Resumen de: WO2025200274A1
A double-layer battery pressure relief structure and a battery pack. The double-layer battery pressure relief structure comprises: an upper cell module (1), which is provided with a plurality of upper cell pressure relief ports (11); a lower cell module (2), which is provided with a plurality of lower cell pressure relief ports (21); and a pressure relief layer (3), which is sandwiched between the upper cell module (1) and the lower cell module (2), a pressure relief cavity (33) in communication with the upper cell pressure relief ports (11) and the lower cell pressure relief ports (21) being formed in the pressure relief layer (3), wherein the upper cell pressure relief ports (11) and the lower cell pressure relief ports (21) are staggered.
Resumen de: WO2025203666A1
This battery pack manufacturing method is for manufacturing a battery pack provided with a battery module and a pack case that houses the battery module. The batter pack manufacturing method involves: a connector being connected to a side surface of the battery module, the connector being extended from the side surface of the battery module and bent, a flow passage through which a heating medium is guided being formed in the connector, a port through which the heating medium can be fed in and/or fed out being formed in the end of the connector on the opposite side thereof from the side surface of the battery module, the connector being connected to the side surface of the battery module so as to be capable of rotating about an axis intersecting the side surface of the battery module, a hose that is connected to the inner surface of the pack case being connected to the port of the connector which is in a first attitude where the port is oriented toward the upper surface of the battery module; and, after the hose has been connected to the port, the attitude of the connector being set to be a second attitude where the port is oriented further to the lower surface direction of the battery module in comparison to when the connector is in the first attitude.
Resumen de: WO2025205445A1
The purpose of the present invention is to reduce the possibility of occurrence of manufacturing defects. A laminated battery (1A) comprises a plurality of current collectors (2) which are disposed along a prescribed direction, a plurality of electrode bodies (3) which are respectively disposed between the plurality of current collectors (2); and insulation members (4) that are provided between the current collectors (2) and adjacent to the periphery of the electrode bodies (3). The insulation members (4) include a first compression material that has the material property of being more easily compressed than the electrode bodies (3).
Resumen de: WO2025205675A1
A negative electrode active material according to the present invention contains graphite powder and Si/C powder containing Si-C composite particles composed of silicon and a carbon material. The graphite powder contains graphite powder (A) and graphite powder (B), which are two kinds of graphite powder having different median diameters D50 in a volume frequency particle size distribution by a laser diffraction scattering method. When the graphite powder (A) contains graphite particles containing amorphous carbon on the surface, and the median diameter D50 of the graphite powder (A) is DA and the median diameter D50 of the graphite powder (B) is DB, the value of DB/DA is 0.60 to 1.20.
Resumen de: WO2025203665A1
The present invention provides a method for manufacturing a battery module, the battery module comprising: a laminate formed from a stacked plurality of units, each unit including first and second cell groups in which a plurality of cells extending in a first direction are arranged in a second direction orthogonal to the first direction and a temperature regulation plate which is disposed between the first cell group and the second cell group and which extends in the second direction; and a case accommodating the laminate. The method comprises: filling gaps in the laminate accommodated in the case with a fluid filler and then curing the filler; and, prior to the filling with the filler, sealing an opening in a lateral surface of the case in which the laminate is accommodated with an outflow prevention member configured to restrict the movement of fluid.
Resumen de: WO2025206057A1
This secondary battery includes: an electrode group in which a positive electrode, a negative electrode, and a separator are wound; an electrolyte; a bottomed cylindrical outer can that accommodates the electrode group and the electrolyte; a sealing plate that is disposed in the opening of the outer can with an insulating gasket interposed therebetween; a positive electrode lead that connects the positive electrode and the sealing plate; and a negative electrode lead that connects the negative electrode and the outer can. The negative electrode includes a negative electrode current collector, and a negative electrode mixture layer supported on the negative electrode current collector. In the outermost periphery of the negative electrode, the negative electrode mixture layer faces the inner surface of the outer can, and the negative electrode lead is disposed further to the inner peripheral side than the positive electrode lead. When the radius of the electrode group is R, the positive electrode lead is disposed within a region whose distance in the radial direction from the winding axis of the electrode group is less than 0.9 R. In an external short circuit, a heat generation amount Q1 of the positive electrode lead and a heat generation amount Q2 of the negative electrode lead satisfy the relationship Q1 < Q2.
Resumen de: WO2025204494A1
The present invention improves charge/discharge characteristics. This battery has a positive electrode, a negative electrode, and an electrolyte layer that contains a solid electrolyte. The negative electrode comprises: a negative electrode current collector layer; a negative electrode active material layer residing on the electrolyte layer side with respect to the negative electrode current collector layer; and a negative electrode intermediate layer that is in contact with the negative electrode current collector layer and the negative electrode active material layer. The solid electrolyte contains S. The negative electrode current collector layer contains Cu. The negative electrode active material layer contains Si. The negative electrode intermediate layer contains Cu and Si. The molar ratio of Si to Cu in the negative electrode intermediate layer is 0.13-1.20.
Resumen de: WO2025200195A1
A signal acquisition assembly (1) of a battery cell (20) and a battery pack. The signal acquisition assembly (1) comprises a frame (10), a circuit board (11), a plurality of pin-type electrical connectors (12), and a plurality of signal acquisition lines (13); the frame (10) has a first side surface (101) and a second side surface (102) opposite to each other in a first direction; the circuit board (11) is provided with a plurality of insertion structures (110), each pin-type electrical connector (12) comprises a first connection portion (1210) and a pin-type insertion portion (1220), the pin-type insertion portions (1220) of the plurality of pin-type electrical connectors (12) are inserted into the plurality of insertion structures (110) in one-to-one correspondence, and the pin-type insertion portions (1220) are electrically connected to a battery management circuit (113) carried by the circuit board (11); second connection portions (130) of the plurality of signal acquisition lines (13) are correspondingly connected to the first connection portions (1210) of the plurality of pin-type electrical connectors (12); and an acquisition portion (131) of each signal acquisition line (13) is configured to acquire a signal of the battery cell (20).
Resumen de: WO2025200434A1
A positive electrode active material, a positive electrode, a sodium ion battery, a battery assembly and an electrical system, wherein the positive electrode active material meets: the cross-sectional filling rate α of the positive electrode active material is 75%-99%, and the post-compression rebound rate ε of the positive electrode active material is 3%-10%; the post-compression rebound rate ε=1-(the compaction density after rebound/the maximum compaction density); the cross-sectional filling rate α and the post-compression rebound rate ε of the positive electrode active material satisfy: 8≤α/ε≤30. The positive electrode active material has high energy density and good cycle performance.
Resumen de: WO2025205316A1
This electrochemical device comprises a positive electrode, a negative electrode, and a lithium ion-conductive electrolyte, said negative electrode being provided with a negative electrode current collector and a negative electrode material layer supported on the negative electrode current collector. The negative electrode material layer comprises a negative electrode active material that undergoes reversible doping with lithium ions. The negative electrode active material comprises a carbon material. The negative electrode material layer has a coated region. The surface of the negative electrode material layer is divided into: a first region, which contains a region in proximity to a connection region with a negative electrode lead terminal; and a second region outside the first region. A composition ratio X1 of lithium fluoride to lithium carbonate contained in the coated region in the first region of the negative electrode material layer is higher than a composition ratio X2 of lithium fluoride to lithium carbonate contained in the coated region in the second region.
Resumen de: WO2025203536A1
Disclosed is a solid electrolyte that exhibits high ion conductivity and that can be provided at an inexpensive process cost. The solid electrolyte comprises: at least one inorganic compound selected from the group consisting of metal oxides, metal hydrogen compounds, and metal hydroxides; residual solvent; and a salt containing an alkali metal or an alkaline earth metal. The x-ray diffraction pattern of the inorganic compound has at least one peak having a full width at half maximum of no greater than 0.80°.
Resumen de: WO2025200292A1
A bottom protective plate and a battery case. The bottom protective plate comprises an upper skin (10), a lower skin (20), and an interlayer (30). The lower skin (20) and the upper skin (10) are spaced apart. The interlayer (30) is sandwiched between the upper skin (10) and the lower skin (20). The thickness of the upper skin (10) is greater than the thickness of the lower skin (20).
Resumen de: WO2025206648A1
According to exemplary embodiments, a battery pack is provided. The battery pack comprises: a pack housing including a base plate and a sidewall perpendicular to the base plate; a plurality of battery cell assemblies which are arranged on the base plate and each of which includes a plurality of battery cells and an integrated circuit assembly configured to be electrically connected to the plurality of battery cells; a communication device configured to communicate with an antenna of the integrated circuit assembly of each of the plurality of battery cell assemblies; and a battery management system (BMS) configured to communicate with the communication device.
Resumen de: WO2025207753A1
A lithium extraction process and system that extracts lithium from flexible feed stock, including ore-grade targeted deposits and waste rock, is presented. Waste rock corresponds to mine tailings and/or rock that was mined but not used for lithium extraction. Aspects of the process include crushing the source material, structurally decomposing/altering the source material to expose the contained lithium for extraction, leaching the lithium from the structurally decomposes source material, extracting the leached lithium (as a lithium slurry, i.e., lithium carbonate), and drying the leached lithium as one or more commercially useful lithium compounds. Components of the system, such as the concentration, decomposing, leaching and production modules may be implemented as mobile modules that are co-located in situ with the source material.
Resumen de: WO2025200542A1
The present application relates to the technical field of current collectors, and specifically relates to a multilayer composite film and a current collector prepared from same. The present application provides a preparation method for the multilayer composite film. The multilayer composite film comprises a layer X, a layer Y and a layer Z from top to bottom; the layer X and the layer Z are made of polyimide, and the polyimide is a polycondensation reactant of carboxylic acid anhydride and diamine; and the material of the layer Y is any one or more of polypropylene, polyethylene, polyethylene terephthalate, polybutylene terephthalate, polyvinylidene fluoride, polytetrafluoroethylene, polyphenylene sulfide, polyphenyl ether, polyester, polystyrene and derivatives thereof. The polyimide prepared in the present application solves the problems of low solubility and poor processability of conventional fully aromatic polyimides, and a composite current collector is prepared by using heat resistance and improved surface polarity of polyimides, thereby improving the bonding force between a composite current collector film and a metal layer, and improving the tensile strength of a finished product.
Resumen de: WO2025203280A1
The present invention makes it possible to effectively dissolve a binder in a hydrophobic solvent. A positive electrode active material recovery method according to the present invention includes a lithium recovery step for filtering a cell elution slurry that has been extracted from a lithium ion secondary battery and includes a positive electrode active material and a binder to recover lithium, a substitution step for performing a substitution with a compatible solvent on a positive electrode mixture slurry obtained by the processing at the lithium recovery step and filtering, and a binder removal step for performing a substitution with a hydrophobic solvent on the positive electrode mixture slurry processed at the substitution step and filtering to dissolve the binder in the positive electrode mixture slurry and produce a post-removal slurry from which the binder has been removed.
Resumen de: WO2025204196A1
This sensor is provided with: a film which has flexibility and of which the electrical characteristics change when being deformed; and an adhesive member that fixes the film to a tube such that the film is disposed along the lateral surface of the tube. The film, in a state of being fixed to the tube, is stretched and becomes narrow at the middle as compared to when in a state of not being fixed to the tube.
Resumen de: WO2025199692A1
The present application provides an electrolyte, a secondary battery comprising same, and an electronic device. The electrolyte comprises lithium difluorophosphate and a first lithium salt, wherein the first lithium salt comprises at least one of lithium hexafluorophosphate or lithium bisfluorosulfonylimide. Based on the mass of the electrolyte, the mass percentage content of lithium difluorophosphate is A%, and the mass percentage content of the first lithium salt is B%, wherein 2≤A≤8.8, and 0.1≤A/B≤1. The electrolyte further comprises a first solvent, wherein the donor number of the first solvent is 10 or above, or the dielectric constant of the first solvent is 5 or above. Based on the mass of the electrolyte, the mass percentage content of the first solvent is C%, wherein 5≤C≤60. The electrolyte comprises lithium difluorophosphate, and the first lithium salt and the first solvent, and the values of A, A/B and C are regulated to be within the ranges, such that the cycle performance and high-temperature storage performance of a secondary battery can be improved.
Resumen de: WO2025205921A1
A cylindrical battery, which is an exemplary embodiment, comprises an electrode body that has a positive electrode (11), a negative electrode, and a separator and is formed by winding the positive electrode (11) and the negative electrode with the separator interposed therebetween. The positive electrode (11) or the negative electrode is connected to the bottom of an outer can. The positive electrode (11) includes a long positive electrode core body (30) and a positive electrode mixture layer (31) provided on the positive electrode core body (30). Regarding the positive electrode mixture layer (31), where a region including the center of the positive electrode (11) in the width direction is defined as a central region (312), a region including one end in the width direction positioned closer to a sealing body (16) side than the central region (312) is defined as a first region (311), and a region including the other end in the width direction positioned closer to the bottom side of the outer can (15) than the central region (311) is defined as a second region (313), the density of the first region (311) is the same as the density of the central region (312) or greater than the density of the central region (312), and the density of the second region (313) is smaller than the density of the central region (312).
Resumen de: WO2025204682A1
This production method for a recycled positive electrode active material includes the following steps: (1) a step for mixing a positive electrode mixture that contains a positive electrode active material and a carbon-containing material, and an activation treatment agent that contains one type or two or more types of alkali compounds, thereby obtaining a mixture; (2) a step for bringing the mixture into a heating furnace, heating the mixture, and removing, from the heating furnace, carbon dioxide generated by heating the carbon-containing material, thereby obtaining a mixture after heating; and (3) a step for recovering, from the mixture after heating, a positive electrode active material after heating.
Resumen de: WO2025200572A1
An end cover assembly, a battery device, and an electric device. The end cover assembly comprises a cover plate (10), an adhesive member (20) and an insulating member (30); the cover plate (10) is provided with a first mounting hole (11); the adhesive member (20) is bonded to the cover plate (10); the adhesive member (20) is provided with a second mounting hole (21); the second mounting hole (21) corresponds to the first mounting hole (11); the insulating member (30) is arranged on the side of the cover plate (10) facing away from the adhesive member (20); the insulating member (30) is provided with a third mounting hole (31); the third mounting hole (31) corresponds to the first mounting hole (11); the thickness of the adhesive member (20) is H1, the thickness of the insulating member (30) is H2, and the following condition is satisfied: H1<H2. By means of the configurations, the connection reliability of the end cover assembly is improved, and the risk of detachment during manufacturing and usage is reduced.
Nº publicación: WO2025204689A1 02/10/2025
Solicitante:
SUMITOMO CHEMICAL COMPANY LTD [JP]
KYOTO UNIV [JP]
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Resumen de: WO2025204689A1
This method for producing a recycled positive electrode active material involves the following steps: (1) a step for mixing a positive electrode mixture containing a positive electrode active material and an activation treatment agent containing one or more alkali metal compounds to obtain a mixture; (2) a step for heating the mixture to obtain a heated mixture; (3) a step for bringing the heated mixture into contact with a first liquid containing water and an alkali metal compound to obtain a first solid component and a first liquid component; (4) a step for bringing the first solid component into contact with a second liquid containing water and containing an alkali metal compound at an amount smaller than that in the first liquid to obtain a second solid component and a second liquid component; and (5) a step for recovering a recycled positive electrode active material from the second solid component.
BOPI
Sede Electrónica
