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1900
resultados
Última actualización
05/10/2025 [07:18:00]
Resultados 400 a 425 de 1900
Resumen de: US2025309254A1
A lithium-sodium composite manganese-based material and a preparation method thereof, a positive electrode plate, a secondary battery, and an electric apparatus. The lithium-sodium composite manganese-based material includes LitNayLixNiaCobMncMaApOg, where 0
Resumen de: US2025309258A1
The present disclosure relates to the technical field of lithium-ion batteries, and particularly, to a multi-element cathode material, a preparation method thereof, a positive electrode plate, and a lithium-ion battery. The multi-electrode material is composed of secondary particles agglomerated by primary particles. A ratio of a total cross-sectional area of the primary particles with more than 5 grain boundaries to a cross-sectional area of the secondary particles is greater than or equal to 3:4. A porosity on a cross-section of the secondary particles is less than or equal to 2%. A grain boundary is a contour line of an interface between the primary particles with the same structure but different orientations on the cross-section of the secondary particles and a length of the grain boundary is greater than or equal to 0.1 μm.
Resumen de: US2025309267A1
A negative electrode of the present disclosure contains a negative electrode active material having an average particle size of 2 μm or more and 25 μm or less, and a proportion of secondary particles of 50%, and a tortuosity is 1 or more and 20 or less, and a migration index is 1.0 or more and 1.6 or less.
Resumen de: US2025309253A1
A positive electrode active material for a lithium-ion secondary battery according to one embodiment of the present invention is represented by the following formula (I):LiaMnxTiyA1zO2 (I)wherein a satisfies a relationship of 0.40≤a≤0.50, and x, y, and z satisfy relationships of x+y+z=1, 0.48≤x≤0.58, 0.31≤y≤0.50, and 0.01≤z≤0.12.
Resumen de: US2025309251A1
A method for manufacturing a positive electrode active material for a lithium-ion secondary battery according to one embodiment of the present invention comprises a step of performing a hydrothermal treatment on a specific NaMnTi-containing oxide having a tunnel structure Pbam in a lithium nitrate aqueous solution to produce a LiMnTi-containing oxide.
Resumen de: US2025309467A1
A method of manufacturing a solid-state battery includes a laminate forming step of forming a solid electrolyte layer-positive electrode layer laminate. The laminate forming step includes: a transferring-pressing step of transferring and pressing a first solid electrolyte layer onto the positive electrode active material layer of the positive electrode layer; a first pressurizing step of pressurizing the positive electrode layer and the first solid electrolyte layer transferred to the positive electrode layer; and a second pressurizing step of disposing and pressurizing a second solid electrolyte layer onto the first solid electrolyte layer after the first pressurizing step. In the method, a pressing pressure in the transferring-pressing step is lower than a pressing pressure in the first pressurizing step, and a content of a binder in the first solid electrolyte layer is equal to or greater than a content of a binder in the second solid electrolyte layer.
Resumen de: US2025309458A1
A battery system includes a liquid-cooled battery pack and a compressed air supply connected to a high pressure inlet valve of the battery pack and connectable to an air-controlled brake system of a vehicle, wherein the battery system is configured to control an internal pressure of the battery pack to be greater than an ambient air pressure.
Resumen de: US2025309457A1
An electrical connection assembly includes an electrical connector and an insulating member, wherein the electrical connector is configured to connect a plurality of battery cells; and the insulating member is arranged on the electrical connector and protrudes out of the side of the electrical connector away from the battery cells.
Resumen de: US2025309445A1
Provided is a battery pack that is used in a working vehicle where an operator can easily get access to an electric component housing chamber in which an electric component is housed thus enhancing the maintenance property of the electric component. The battery pack includes a battery module, electric components, and a housing that houses the battery module and the electric components. The housing includes an electric component housing chamber that houses the electric components. The electric component housing chamber includes: an opening portion that enables an operator to get access to the electric component housing chamber from the outside; and a maintenance cover that is configured to be capable of closing the opening portion. The maintenance cover is mounted on the housing by a hinge.
Resumen de: US2025309453A1
A battery pack includes a housing, a battery module, a battery management system (BMS) module, and an isolation plate disposed between the battery module and the BMS module. An accommodating space is formed in the housing. The battery module is disposed within the accommodating space. The isolation plate is hermetically connected to the housing to isolate the battery module from the BMS module.
Resumen de: US2025309454A1
A battery pack for an electrically powered road vehicle includes: a plurality of planar electrochemical cells arranged in a pack along an axis A; a box-shaped support structure housing the cells; wherein each cell comprises two flat faces orthogonal to the axis A and a thickness s1 along the axis A progressively increasing during the life of the battery pack; wherein between each pair of adjacent cells there is a planar intermediate body in contact with the flat faces of the cells; wherein each planar intermediate body is configured to compress during the progressive increase in thickness s1 of the cells; wherein each planar intermediate body comprises a flat face orthogonal to the axis A contacting the flat face of a first cell of the pair of cells; wherein at least one of the planar intermediate bodies comprises portions with a differentiated thickness s2, s3 along the axis A.
Resumen de: US2025303422A1
A system for carrying out size reduction of battery materials under immersion conditions can include a housing containing an immersion liquid and at least a first comminuting device submerged in the immersion liquid and configured to cause a size reduction of the battery materials to form first reduced-size battery materials, and at least a first outlet through which a size-reduced feed stream comprising a black mass solid material and an electrolyte materials entrained within the immersion liquid can exit the comminuting apparatus. At least a first separator may be configured to separate the size-reduced feed stream into at least a first stream that comprises the black mass solid material liberated from the battery materials and a retained portion of the immersion liquid having entrained electrolyte materials, and a second stream comprising a second portion of the immersion liquid having entrained electrolyte materials.
Resumen de: US2025309414A1
A molded element for arranging on a temperature-controllable element, wherein the temperature-controllable element may preferably be an energy storage element, for example an electrochemical energy storage cell, wherein the molded element comprises: at least one receiving zone for receiving at least one section of the temperature-controllable element in the molded element and a molded element material having a density of at most 0.75 g/cm3, preferably at most 0.65 g/cm3, particularly preferably at most 0.55 g/cm3.
Resumen de: US2025309406A1
A battery pack is disclosed according to the present disclosure. The battery pack includes: a housing, a cover, a cell set and a bus bar. The housing includes a receiving cavity with an opening on a side of the housing. The cover is provided over the side of the housing with the opening to close the receiving cavity. The cell set is provided in the receiving cavity, and electrodes of the cell set face the cover. The bus bar is provided between the cell set and the cover, and a pressure relief space is reserved between the bus bar and the cover. The receiving cavity is filled with insulating cooling oil, and the electrodes of the cell set and the bus bar are submerged in the insulating cooling oil.
Resumen de: US2025309404A1
A power storage device includes a power storage module and a heat exchanger whose heat exchange object is the power storage module. The power storage module is joined to the heat exchanger with an adhesive. The heat exchanger exchanges heat with the heat exchange object using refrigerant flowing through a main flow path and a sub-flow path. The heat exchanger includes a base member and an outer wall. The outer wall is provided in the base member. The main flow path is formed inside the base member. The sub-flow path is formed of the base member and the outer wall. The outer wall deforms more easily than the base member and the power storage module.
Resumen de: US2025309412A1
A battery housing includes a bottom case and a top cover. The bottom case includes a main case and a reinforcing rib. The main case is provided with an accommodating cavity and an opening, the accommodating cavity being located at an inner side of the main case, and the opening being located on the outer surface of the main case and communicated with the accommodating cavity. The reinforcing rib is fixedly connected to a side wall surface of the accommodating cavity, is spaced apart from both the opening and the bottom wall surface of the accommodating cavity, and extends along the circumferential direction of the main case. The first sub-reinforcing portion of the reinforcing rib includes a step surface facing the opening, the second sub-reinforcing portion is located on a side of the first sub-reinforcing portion facing away from the step surface and fixedly connected to the first sub-reinforcing portion.
Resumen de: US2025309248A1
An active material includes silicon. The active material has voids inside primary particles, and a void volume X of voids having a pore diameter of 10 nm or less among the voids is 0.015 cc/g or more.
Resumen de: WO2025200914A1
Embodiments of the present application provide a secondary battery and an electrochemical device. The secondary battery comprises an electrode assembly and a case. The case is used for accommodating the electrode assembly, and the case comprises a first wall and a second wall which are opposite to each other in the thickness direction of the electrode assembly. The first wall is provided with a first protruding portion protruding out of the interior of the case; the case further comprises a third wall; the third wall is connected to the first wall and the second wall; the third wall is spaced apart from the electrode assembly in a first direction; the first direction is perpendicular to the thickness direction of the electrode assembly; in the thickness direction of the electrode assembly, the size of the inner surface of the third wall is L1, the thickness of the electrode assembly is L2, and the height of the first protruding portion protruding out of the inner surface of the first wall is L3, wherein the following relationship is satisfied: L3>L1-L2. The technical solution provided by the embodiments of the present application can improve the reliability and safety performance of the secondary battery.
Resumen de: WO2025203691A1
A method for manufacturing a battery module including a laminate in which a plurality of units are stacked, each unit including a first cell group and second cell group including a plurality of cells extending in a first direction and arranged in a second direction orthogonal to the first direction, and a temperature control plate placed between the first cell group and the second cell group and extending in the second direction, the method comprising: establishing a positional relationship between cells in the first cell group using a jig; and bonding the first cell group in which the positional relationship between cells is established and the temperature control plate with an adhesive, the jig being provided with a protrusion at an end in the second direction, bonding of the first cell group and the temperature control plate with an adhesive comprising positioning the temperature control plate in the second direction by bringing the temperature control plate into contact with the protrusion.
Resumen de: WO2025199924A1
The present application provides a secondary battery and an electronic device. The secondary battery comprises an electrode assembly that is of a stack structure; the electrode assembly comprises positive electrode sheets, a separator, and a negative electrode sheet; the positive electrode sheets comprise a double-sided positive electrode sheet and a single-sided positive electrode sheet located on the outermost side of the electrode assembly in a stack direction; the single-sided positive electrode sheet comprises a positive electrode current collector and a positive electrode material layer provided on one surface of the positive electrode current collector, and the positive electrode material layer faces the double-sided positive electrode sheet; the positive electrode material layer comprises a bonding coating area and a non-coating area, the bonding coating area comprises a first binder, the non-coating area comprises a second binder, and the bonding coating area comprises a plurality of sub-areas arranged at intervals. The bonding coating area of the single-sided positive electrode sheet comprises the plurality of sub-areas, so that the problems of curling and wrinkling of the single-sided positive electrode sheet can be mitigated, the wettability of the single-sided positive electrode sheet is improved, the problems of purple spots, lithium precipitation and capacity attenuation of the secondary battery can be mitigated, and the influence on the energy density of the s
Resumen de: WO2025200816A1
The present application provides an electrolyte, a lithium-ion secondary battery, a battery module, a battery pack, and an electronic device. The electrolyte comprises a first component and a second component. The first component comprises ethyl methyl carbonate and ethylene carbonate; and on the basis of the mass of the electrolyte, the mass percentage content of ethyl methyl carbonate is W1%, the mass percentage content of ethylene carbonate is W2%, and the mass percentage content of the first component is W%, wherein 60≤W≤88, and 1.14≤W1/W2≤1.93. The second component comprises lithium tetrafluoroborate and lithium difluorophosphate; and on the basis of the mass of the electrolyte, the mass percentage content of lithium tetrafluoroborate is m1%, the mass percentage content of lithium difluorophosphate is m2%, and the mass percentage content of the second component is m%, wherein 0.03≤m≤1.5, and 0.1≤m1/m2≤25. By means of the configuration, an electrolyte system can have relatively good kinetic performance and improve the interfacial stability of positive electrodes and negative electrodes, thereby improving the safety performance and high-temperature cycle performance of lithium-ion secondary batteries.
Resumen de: WO2025204122A1
This winding machine (30) is provided with a negative electrode material supply device (31), an outer separator supply device (33), and a winding device (35). The negative electrode material supply device (31) has: a first accommodation part (31b) that accommodates a sheet-shaped negative electrode material (1; a second accommodation part (31c) that accommodates the sheet-shaped negative electrode material (1); and a draw-out section (31d). The draw-out section (31d) includes a second draw-out roller (m2) that pulls out the negative electrode material (1) from the second accommodation part (31c) in a state in which the leading end portion (1U) of the negative electrode material (1) accommodated in the second accommodation part (31c) is gripped.
Resumen de: WO2025199882A1
Disclosed in the present invention are a method for in-situ growth of lithium iron phosphate on three-dimensional graphene and a use of the lithium iron phosphate. The method comprises: dissolving an iron source and a phosphorus source in water, mixing to obtain a reaction solution, adding a lithium source, adding a doping element source for the first time, and carrying out primary grinding and mixing; adding three-dimensional graphene, and carrying out secondary grinding and mixing; and carrying out a hydrothermal reaction and tertiary grinding and mixing; adding the doping element source for the second time to obtain a mixed slurry, carrying out spray granulation, sintering particles in an inert gas atmosphere, and crushing and sieving a sintered product to obtain the lithium iron phosphate grown in situ on the three-dimensional graphene. According to the method of the present invention, growing in situ a lithium iron phosphate material within pores of three-dimensional graphene greatly improves the electrical conductivity of the growth material, thereby greatly increasing the power density of the growth material, and significantly improving the cycle performance and low-temperature performance of the growth material.
Resumen de: WO2025199842A1
Provided are a secondary battery and an electronic device. The secondary battery comprises an electrode assembly. The electrode assembly comprises a negative electrode sheet. The negative electrode sheet comprises a negative electrode current collector and negative electrode active material layers arranged on surfaces of the negative electrode current collector. The negative electrode current collector comprises a first area, and the negative electrode active material layers are arranged on two opposite surfaces of the first area. The total thickness of the negative electrode active material layers on the first area is T, wherein 0.07 mm≤T≤0.15 mm. A plurality of recesses are formed on the negative electrode active material layers. The compaction density of the negative electrode active material layers is D (g/cm3), wherein 3T+1≤D≤8T+1.
Nº publicación: WO2025206601A1 02/10/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
\uC0BC\uC131\uC5D0\uC2A4\uB514\uC544\uC774 \uC8FC\uC2DD\uD68C\uC0AC
Resumen de: WO2025206601A1
A rechargeable battery comprises an electrode assembly including an uncoated part, a can for accommodating the electrode assembly in an inner space thereof, and a cap plate for sealing the can. The can comprises a bottom part facing the uncoated part and a side part connected to an edge of the bottom part, and the thickness of the bottom part is smaller than the thickness of the side part. The bottom part comprises a base part connected to the side part, and a plurality of welding stepped parts protruding from the base part toward the uncoated part and fixed to the uncoated part by welding.
BOPI
Sede Electrónica
