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1196
resultados
Última actualización
18/08/2025 [07:12:00]
Resultados 1000 a 1025 de 1196
Resumen de: MX2025003265A
Fluoropolymer compositions for use as binder in a lithium-ion secondary battery electrodes are described, as well as methods of their manufacture, and electrode compositions and lithium-ion secondary batteries utilizing such. The fluoropolymer compositions are dry friable agglomerates manufactured by cocoagulation of aqueous dispersions of a first tetrafluoroethylene polymer having a melt creep viscosity of at least about 0.5 x 1011 poise, and a second polymer different from the first polymer. These fluoropolymer compositions afford lithium-ion secondary batteries with improved performance, through such as improved loading of electrodes, and stability of PTFE binder in the anode, and result in lithium-ion secondary batteries having improved performance, such as improved capacity and improved reversible capacity retention.
Resumen de: WO2024068762A1
The invention discloses a battery pack comprising a plurality of rechargeable battery cells that are mechanically and electrically connected, and also a measuring means for measuring at least one parameter of the battery and a telecommunications module, the components of said pack being integrated into a casing having power connection terminals, characterized in that - the telecommunications module comprises a controller that controls the reception and transmission of digital data between a server and the battery measuring means via the low-frequency 4G network, either using a CAT-M1 protocol or with a 2G fallback circuit, and - in that the telecommunications module comprises • a rewritable non-volatile memory for recording at least part of the computer code executed by the computer, and at least some of the digital parameters computed periodically on the basis of the data delivered by the telecommunications module • a RAM memory for recording the digital parameters computed periodically on the basis of the data delivered by the telecommunications module in a ring buffer and - in that the telecommunications module comprises a circuit for controlling the activation of the telecommunications module a) periodically so as to transmit the parameters delivered by said measuring means, b) in the event of detection of a signal transmitted by the server so as to update the computer code recorded in a memory of the measuring means, and c) when the output voltage of said rechargeabl
Resumen de: EP4597739A1
The present invention relates to a battery module, in which a busbar assembly is simplified in shape and reduced in volume to improve space utilization of a battery pack and efficiency of a manufacturing process, and a battery pack.A battery pack according to the present invention includes a plurality of cell groups comprising one or more cells and a terminal, and a busbar assembly disposed on one end of a top surface of each of the cell groups, wherein the busbar assembly includes a busbar disposed at a position corresponding to a position of the terminal to electrically connect the cell groups to each other, a circuit board electrically connected to the busbar to sense the cell groups, and a film laminated on the busbar and the circuit board to prevent the busbar and the circuit board from moving.
Resumen de: EP4597666A1
Problem To provide a non-aqueous electrolyte secondary battery in which the decrease in cycle characteristics is improved as compared with conventional non-aqueous electrolyte secondary batteries.Solution A lithium ion secondary battery, which comprises a positive electrode comprising a positive electrode active material, a negative electrode, and a non-aqueous electrolyte solution, wherein the non-aqueous electrolyte solution comprises LiPF<sub>6</sub> and a lithium imide salt as an electrolyte, and comprises a carbonate-based solvent as a solvent, the lithium ion secondary battery comprises or does not comprise a surplus electrolyte solution, the ratio of the positive electrode capacity to the negative electrode capacity is adjusted to less than 1, the nominal voltage is adjusted to less than 3.6 V, and the content of lithium imide salt comprised in the non-aqueous electrolyte solution per unit battery capacity and the ratio of the positive electrode capacity to the negative electrode capacity are adjusted to satisfy a specific relationship.
Resumen de: EP4597665A1
Problem To provide a non-aqueous electrolyte secondary battery in which the decrease in cycle characteristics is improved as compared with conventional non-aqueous electrolyte secondary batteries.Solution A lithium ion secondary battery, which comprises a positive electrode comprising a positive electrode active material, a negative electrode, and a non-aqueous electrolyte solution, wherein the non-aqueous electrolyte solution comprises LiPF<sub>6</sub> and a lithium imide salt as an electrolyte, and comprises a carbonate-based solvent as a solvent, the lithium ion secondary battery comprises or does not comprise a surplus electrolyte solution, the ratio of the positive electrode capacity to the negative electrode capacity is adjusted to less than 1, the nominal voltage is adjusted to less than 3.6 V, and the total content of LiPF<sub>6</sub> and lithium imide salt comprised in the non-aqueous electrolyte solution per unit battery capacity and the ratio of the positive electrode capacity to the negative electrode capacity are adjusted to satisfy a specific relationship.
Resumen de: EP4597682A1
The present invention relates to an electrode assembly and a secondary battery including same. The electrode assembly according to an embodiment of the present invention is formed by a cathode, a separator, and an anode which are wound together, and may comprise a protective member which is arranged to face an end of at least one of the cathode and the anode and in which a flame retardant is filled.
Resumen de: EP4597712A1
Disclosed is a battery module, including batteries arranged along a first direction that is a thickness direction of the battery and an integrated busbar cover plate. The integrated busbar cover plate is disposed at tops of the batteries. Limiting through hole groups arranged at intervals along the first direction are provided on the integrated busbar cover plate, correspond to the batteries one by one, and are matched with poles of corresponding batteries. In the first direction, a length of a limiting through hole in the limiting through hole group near an end part of the integrated busbar cover plate is greater than that of a limiting through hole in the limiting through hole group located in a middle part of the integrated busbar cover plate. The length of the limiting through hole is a size of the limiting through hole along the first direction.
Resumen de: WO2025114532A1
The present invention relates to a battery housing (10) for receiving at least one battery component, wherein the battery housing (10) has an outer wall (20), which at least partially surrounds a receiving volume (11), and a cooling device (30). The cooling device (30) has a base plate (40) having a first connecting surface (42) and a cover plate (50) having a second connecting surface (52), wherein the connecting surfaces (42, 52) of the base plate (40) and of the cover plate (50) are connected to each other with an integral bond at least in an edge region (60), which is formed circumferentially around the cooling device (30), in such a way that a fluid duct (70) is formed for conducting a cooling fluid between the base plate (40) and the cover plate (50). The cooling device (30) is connected to the battery housing (10) in such a way that the entire edge region (60) of the cooling device (30) is arranged within the outer wall (20) of the battery housing (10), and the cooling device (30) forms the housing base (12) of the battery housing (10). The battery housing (10) has at least one inner wall (80) which is connected to the outer wall (20), the inner wall (80) extending between two opposite wall sections of the outer wall (20), and the inner wall (80) of the battery housing (10) being at least partly connected to a cooling surface (51) of the cooling device (30), the cooling surface facing the receiving volume (11). The invention also relates to a battery having a battery h
Resumen de: EP4597596A1
A method of estimating an electrode density in secondary batteries according to one or more embodiments of the present disclosure includes: preparing an electrode comprising a current collector and first and second coating layers coated on the current collector; measuring first characteristic values of the electrode; removing the first coating layer of the electrode; measuring second characteristic values of the electrode from which the first coating layer has been removed; removing the second coating layer of the electrode from which the first coating layer has been removed; measuring third characteristic values of the electrode from which the first and second coating layer have been removed; and estimating at least one of a density of the first or second coating layer, a thickness of the current collector, or a weight of the current collector, based on the first characteristic values, the second characteristic values, and the third characteristic values.
Resumen de: EP4597710A1
A battery pack according to one embodiment of the present disclosure includes: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; an electrical connection unit including a connector for electrical connection between the battery packs; a pack case that houses the cell module assembly and the electrical connection unit in the inside thereof and is opened at its upper surface; and a fire extinguishing tank that covers the upper part of the pack case, wherein the pack case includes a connector through-hole portion having an opening shape provided on a lower surface of the pack case to allow the connector to pass through, wherein the fire extinguishing tank includes a connector through-hole portion having a tubular shape that penetrates the fire extinguishing tank and protrudes upward from the upper surface of the fire extinguishing tank, and wherein the connector is located through the connector through-hole portion and the connector through-hole portion, thereby being electrically connected between the plurality of stacked battery packs.
Resumen de: EP4597692A1
A battery module according to an exemplary embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked side by side and adjacent to each other; a top frame covering an upper surface of the battery cell stack; a bus bar frame coupled to the top frame and covering a side of the battery cell stack; and a module frame having a quadrangular tube shape and configured to accommodate a battery cell assembly formed by combining the battery cell stack, the top frame, and the bus bar frame, wherein the top frame includes a first protrusion protruding toward an upper surface of the module frame at one end portion of the top frame, and wherein the module frame includes a second protrusion protruding toward the top frame at a position corresponding to the other end portion located on an opposite side to the one end portion of the top frame on an inner side of the upper surface of the module frame.
Resumen de: EP4597643A1
This application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate and an electrolyte solution. The electrolyte solution contains a film-forming additive. A film resistance x Ω of the positive electrode plate and a mass percent y% of the film-forming additive based on a total mass of the electrolyte solution satisfy: x × y ≤ 25. The film resistance and the film-forming additive of the secondary battery provided in this application satisfy the above relationship. The Coulombic efficiency, high-temperature cycle performance, and high-temperature storage performance of the battery can be enhanced by regulating the film resistance and the film-forming additive of the secondary battery.
Resumen de: EP4597698A1
A battery includes an outer case including a tubular part with a tubular shape, a bottom part closing one end of the tubular part, and an opening disposed at the other end of the tubular part; an electrode assembly disposed inside the outer case and including a positive electrode and a negative electrode; a sealing body sealing the opening of the outer case; and a gasket with insulating properties interposed between the outer case and the sealing body. The gasket includes a first gasket with a circular shape, and a second gasket with a circular shape located closer to the bottom part than the first gasket is in the axial direction.
Resumen de: EP4597736A1
A power storage device includes an electrode assembly where a positive electrode plate and a negative electrode plate are wound with a separator interposed between the positive electrode and negative electrode plates; and a positive electrode current collector joined to the positive electrode plate at an upper end of the electrode assembly in axial direction P. The positive electrode current collector includes a plate-shaped flange joined to the positive electrode plate at a face facing the positive electrode plate in axial direction P and a column with an adjustable length in axial direction P that protrudes from the flange toward an upper side in axial direction P.
Resumen de: EP4597600A1
Provided are a laminated sheet for alloy formation used to fabricate a negative electrode that allows constructing a nonaqueous electrolyte battery with good load characteristics at low temperature, and a method of manufacturing a negative electrode and a method of manufacturing a nonaqueous electrolyte battery for fabricating a negative electrode and a nonaqueous electrolyte battery with improved productivity. A method of manufacturing a negative electrode for a nonaqueous electrolyte battery according to the present invention is a method of manufacturing a negative electrode including an anode active material layer having a lithium layer and a lithium-aluminum alloy layer formed on a surface of the lithium layer, and a carbon layer formed on a surface of the anode active material layer, comprising: laminating a laminated sheet for alloy formation, which is an independent sheet including an aluminum foil and a carbon layer formed on one side of the aluminum foil, onto the lithium layer in such a manner that the side of the aluminum foil in the laminated sheet for alloy formation opposite to the side with the carbon layer is in contact with the lithium layer; and allowing lithium in the lithium layer and aluminum in the aluminum foil to react with each other to form the anode active material layer.
Resumen de: EP4597637A1
The present disclosure provides a carbon nanotube dispersion that contains a solvent and bundle-type carbon nanotubes formed from carbon nanotubes having an average diameter of 3 nm to 30 nm, a ratio of the number of bundle-type carbon nanotubes each in a shape having an outer diameter of 50 nm to 5 µm and a fiber length of 1 µm to 100 µm being 0.2% or more to the number of carbon nanotubes each having an outer diameter of 10 nm or more in the carbon nanotube dispersion as a reference.
Resumen de: EP4597702A1
The present invention relates to a battery module and a method for determining a center of a battery cell, and more particularly, to a battery module and a method for determining a center of a battery cell, in which a central position of the battery cell is capable of being contactlessly measured to prevent misalignment of the battery cell and prevent damage to the battery cell to improve quality of the battery module.The battery module according to the present invention is characterized by including a plurality of battery cells, and a battery cell case that accommodates the plurality of battery cells, wherein a central position of each of the plurality of battery cells in a longitudinal direction is marked on a surface of the battery cell.
Resumen de: EP4597656A1
A cylindrical secondary battery including an electrode assembly including a negative electrode plate and a positive electrode plate; a cylindrical can accommodating the electrode assembly and including a terminal hole in one side of the cylindrical can and an open inlet in another side of the cylindrical can; a terminal coupled to the cylindrical can through the terminal hole; and a negative electrode current collector in the cylindrical can and electrically connecting the cylindrical can to the negative electrode plate. The negative electrode current collector includes a notch groove or a cutting hole configured to be cut in response to an increase in pressure in the cylindrical can.
Resumen de: EP4597696A1
The present invention relates to a secondary battery including: an electrode assembly; and a pouch type exterior including an accommodation part, which accommodates the electrode assembly, and a sealing part provided to surround at least a portion of the accommodation part to seal the accommodation part, wherein the sealing part includes: a first folding portion provided so that an outer end of the sealing part is folded toward the accommodation part along a first folding line spaced a first distance from the outer end of the sealing part toward the accommodation part; and a second folding portion provided so that the first folding portion is folded toward the accommodation part along a second folding line spaced a second distance from the first folding line toward the accommodation part, wherein, when a predetermined line spaced a predetermined distance from the outer end of the sealing part toward the accommodation part is referred to as a sealing line, the sealing part includes a sealed portion in which a portion from the outer end of the sealing part to the sealing line is sealed by fusion, wherein, when a distance from the outer end of the sealing part to the accommodation part is referred to as a width of the sealing part, a distance from the sealing line to the accommodation part is 45% to 55% of the width of the sealing part.
Resumen de: EP4597084A1
The present invention relates to a method for detecting a metal foreign material in an electrode active material, wherein the method includes a first step of dissolving an electrode active material in an aqueous nitric acid solution to form a metal foreign material extraction solution, a second step of plating a metal foreign material in the metal foreign material extraction solution on an electrode, and a third step of measuring an amount of the metal foreign material plated on the electrode.
Resumen de: EP4597604A1
A secondary battery positive electrode includes a belt-shaped positive electrode current collector and a positive electrode mixture layer carried on a surface of the positive electrode current collector. The positive electrode current collector has a first region and a second region. The first region is an end area at both ends of the positive electrode current collector in the widthwise direction of the positive electrode current collector, extending in the longitudinal direction of the positive electrode current collector. The second region is a central area in the middle part of the positive electrode current collector in the widthwise direction of the positive electrode current collector, extending in the longitudinal direction of the positive electrode current collector. The positive electrode mixture layer includes a first positive electrode mixture layer carried on the first region and a second positive electrode mixture layer carried on the second region. The positive electrode mixture layer includes a first positive electrode mixture layer carried on the first region and a second positive electrode mixture layer carried on the second region. The first positive electrode mixture layer contains a first positive electrode active material. The second positive electrode mixture layer contains a second positive electrode active material. An average particle diameter D1 of the first positive electrode active material is 1 µm or more and 7 µm or less. An average particle d
Resumen de: EP4597664A1
Disclosed is a lithium secondary battery including: a positive electrode; a negative electrode; a porous separator disposed between the positive electrode and the negative electrode; a spacer disposed between the separator and at least one of the positive electrode and the negative electrode; and a non-aqueous electrolyte having lithium ion conductivity, wherein, on the negative electrode, lithium metal is deposited during charging, and the lithium metal is dissolved during discharging, the spacer includes insulating particles, a binder resin, and a thickener, the insulating particles have a median diameter in a volume-based particle size distribution, of 1.0 µm to 10 µm, the binder resin includes a polymer compound having a phthalic acid skeleton, and the thickener includes at least one selected from the group consisting of carboxymethyl cellulose and a carboxymethyl cellulose salt. Accordingly, it is possible to obtain a lithium secondary battery including a spacer with excellent physical properties.
Resumen de: EP4597640A1
An object of the present invention is to provide a current collector in which cracking and the like hardly occur in a mixture layer at the time of preparing an electrode. A current collector for solving the above issues is a current collector including: a substrate containing a metal; and a coating layer disposed on at least one surface of the substrate. The coating layer contains a vinylidene fluoride polymer A and a conductive auxiliary. The vinylidene fluoride polymer A contains a structural unit derived from vinylidene fluoride and a structural unit derived from a compound having a specific structure.
Resumen de: EP4597791A1
A secondary battery system (100) is a secondary battery system including a battery bank 3 including a battery rack (B) including a plurality of battery cells connected in series and a power converter (2) for charging and discharging a power system by one or a plurality of the battery racks connected in parallel, the secondary battery system includes a switch (4) that enables the battery rack (B) included in the battery bank (3) to be switched to a power converter of another battery bank; and a controller (5) that monitors a deterioration rate or an age of use of the battery rack (B) and controls the power converter (2) and the switch (4), in which the controller (5) instructs the switch (4) about a power converter to be connected based on the deterioration rate or the age of use of the battery rack (B).
Nº publicación: EP4597655A1 06/08/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Resumen de: EP4597655A1
A rechargeable battery includes a wound-type electrode assembly, a heat pipe, a can, and a cap plate. The heat pipe is disposed inside of the electrode assembly at a distance from a wound center of the electrode assembly, and the heat pipe surrounds the wound center. The can includes an internal space in which the electrode assembly and the heat pipe are positioned. The cap plate is coupled to an end of an opening of the can to close and seal the can, the cap plate is connected heat pipe, and the cap plate is configured to provide dissipation of heat from the heat pipe.
BOPI
Sede Electrónica
