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1832
resultados
Última actualización
05/07/2025 [08:21:00]
Resultados 625 a 650 de 1832
Resumen de: EP4579922A2
A hydrogel composition for reinforcing a cellulose paper battery separator comprises a monomer, a cross-linking reagent, an initiator, and a metal salt. A hydrogel-reinforced cellulose paper battery separator comprises a cellulose paper, and a hydrogel integrated within the cellulose paper. A paper battery comprises the hydrogel reinforced cellulose paper batter separator. A method for fabricating the hydrogel reinforced cellulose paper batter separator.
Resumen de: EP4579790A1
An anode for a lithium secondary battery according to embodiments of the present disclosure includes an anode current collector, a first anode active material layer formed on at least one surface of the anode current collector and including first pores, a second anode active material layer formed on the first anode active material layer and including artificial graphite and second pores, wherein a difference between the first pore aspect ratio and the second pore aspect ratio is 0.5 to 3.0.
Resumen de: EP4579886A1
A battery assembly which comprises a case (30), a plurality of battery cells (10) accommodated in a first inner space of the case, and a plurality of particle-shaped insulating materials (80) accommodated in a second inner space of the case.
Resumen de: EP4579909A1
A hatch cover, comprises a cover body (21) having a first sealing ring (22) disposed about a periphery; a first locking unit is provided with a pair of sliding buckles (23) which are connected to the inner side surface of the cover body in a sliding manner, the sliding buckles are locked with the cabin body of the battery cabin along a first direction when moving away from each other to protrude out of the outer periphery of the cover body, and the sliding buckles move in opposite directions to retract to the inner side of the outer periphery of the cover body and unlock relative to the cabin body of the battery cabin; a second locking unit (25) is provided with a rotary buckle which is rotationally connected to the inner side surface of the cover body, the rotary buckle is locked with the cabin body of the battery cabin along a second direction when rotating to a first position, and the rotary buckle is unlocked relative to the cabin body of the battery cabin when rotating to a second position; and a rotary driving unit (24) is connected with the sliding buckle and the rotary buckle andis used for driving the first locking unit and the second locking unit to synchronously move to a locking state or an unlocking state;wherein the first direction and the second direction are arranged at an angle.
Resumen de: EP4579819A1
A sub-assembly for an electrode-solid electrolyte, an all-solid-state battery comprising the same, and a method of preparing the all-solid-state battery. The electrode-solid electrolyte sub-assembly includes an electrode including a porous current collector having a first side and an opposite second side; an elastic layer including an elastic polymer and disposed on the first side of the porous current collector; and a solid electrolyte disposed on the opposite second side of the porous current collector. The porous current collector includes a plurality of internal pores and the elastic polymer is disposed in at least one internal pore of the plurality of internal pores of the porous current collector.
Resumen de: EP4578899A1
Provided are a polyolefin microporous membrane, a method for manufacturing the same, and a separator including the microporous membrane. According to an exemplary embodiment, a polyolefin microporous membrane including: 60 wt% to 80 wt% of a polypropylene having a viscosity average molecular weight of 1×10<sup>6</sup> g/mol to 3×10<sup>6</sup> g/mol and 20 wt% to 40 wt% of a polyethylene having a weight average molecular weight of 1×10<sup>5</sup> g/mol to 10×10<sup>5</sup> g/mol is provided, wherein the polyolefin microporous membrane has a puncture strength of 0.25 N/um or more, a gas permeability of 1.0×10<sup>-5</sup> Darcy or more, a porosity of 30% to 70%, an average pore size of 20 nm to 40 nm, and a shutdown temperature of 150°C or lower.
Resumen de: EP4579774A1
According to an embodiment, an electrode for a secondary battery is provided, the electrode for a secondary battery including: an electrode current collector, and an electrode mixture layer and an insulating layer on at least one surface of the electrode current collector, wherein the insulating layer includes a copolymer, and the copolymer includes a repeating unit having an imide group and a rubber-based repeating unit.According to an embodiment of the present disclosure, it is possible to prevent ignition from occurring in the lithium secondary battery to improve safety.
Resumen de: EP4579802A1
A cathode active material for a lithium secondary battery according to the embodiments of the present disclosure includes: first cathode active material particles which includes a lithium metal oxide containing nickel, cobalt and manganese; and second cathode active material particles which includes a lithium phosphate compound, wherein a molar ratio of the cobalt based on a total number of moles of the nickel, cobalt and manganese in the first cathode active material particles may be more than 0 and less than 0.15, and a weight ratio of the first cathode active material particles and the second cathode active material particles is 20:80 to 80:20. Accordingly, a lithium secondary battery having improved stability, capacity characteristics, and lifespan characteristics while reducing production costs may be implemented.
Resumen de: EP4579901A1
A battery structure (1) includes two battery modules (10a, 10b) and a conductive elastic member (112). Each of the two battery modules (10a, 10b) includes a housing (100), a plurality of battery cells (102), a first holder (104), a second holder (106), a first conductive plate (108) and a second conductive plate (110). The battery cells (102) are disposed in the housing (100). The first holder (104) and the second holder (106) accommodate the battery cells (102). The first conductive plate (108) is disposed on the first holder (104) and connected to the battery cells (102). The second conductive plate (110) is disposed on the second holder (106) and connected to the battery cells (102). The conductive elastic member (112) is disposed between and in contact with the first conductive plate (108) and the second conductive plate (110) of the two battery modules (10a, 10b).
Resumen de: EP4579881A1
A battery pack and a battery apparatus utilize cooling fluid and cooling fluid circuitry for cooling battery cells in a normal operating state in which an event is not detected and extinguishing the event in an abnormal state. The cooling fluid circuitry controls inflow and outflow rates of the cooling fluid, such as a fluid pump or a fluid valve connected to an inlet and an outlet of the battery pack. In a normal operating state in which an event, such as ignition, explosion, or gas emission of battery cells, is not detected, the operating heat resulting from charging and discharging of battery cells may be quickly cooled through immersion-type liquid cooling of the battery cells. In response to the detection of an event, the event may be quickly extinguished using the cooling fluid by raising the fluid level of the cooling fluid to a preset elevated level.
Resumen de: EP4579885A1
Battery modules and battery packs are disclosed. In an embodiment of the disclosed technology, a battery module may include a cell assembly including a plurality of battery cells and at least one thermal transfer blocking assembly interposed between two or more adjacent battery cells of the plurality of battery cells; a module housing including a main plate structured to support the cell assembly; at least one slit formed in the main plate and arranged to face the at least one thermal transfer blocking assembly; and a thermally conductive polymer disposed in the at least one slit. A melting point of the thermally conductive polymer may be lower than a melting point of the main plate.
Resumen de: EP4578831A1
A cathode active material for a lithium secondary battery has a structure of a lithium transition metal oxide. A ratio of a crystallite size of a (003) plane to a crystallite size of a (110) plane measured by an X-ray diffraction (XRD) analysis is in a range from 0.7 to 2.0, and a ratio of the crystallite size of the (003) plane to a crystallite size of a (104) plane measured by the XRD analysis is in a range from 0.7 to 2.0. A cathode for a lithium secondary battery and a lithium secondary battery include the cathode active material for a lithium secondary battery.
Resumen de: EP4579794A1
The present application provides a positive electrode sheet, a secondary battery, a battery pack and an electricity-consumption equipment. The positive electrode sheet includes a positive current collector. At least one surface of the positive current collector is provided with a positive active material layer. In any 25µm×25µm region of a cross section of the positive active material layer, a percentage of an area of a first positive active material with a cracked structure to a total area of the region is a %, 5≤a≤20.
Resumen de: EP4579788A1
The present disclosure provides a lithium replenishment assembly, a positive electrode, a secondary battery, and an electric device. The lithium replenishment assembly includes a current collector and a lithium replenishment layer provided on at least one side surface of the current collector. After delithiation of the lithium replenishment layer, the resistivity of the lithium replenishment assembly at the room temperature ranges from 2 Ω·m to 2000 Ω·m. It has a lithium replenishment effect and maintains low resistivity after delithiation of the lithium replenishment layer, thereby increasing the energy density of the battery while enabling good rate performance of the battery.
Resumen de: EP4579393A1
The present invention provides a liquid cooling plate assembly, a server, and a data center. The liquid cooling plate assembly includes: a cooling plate and a cover body, the cooling plate has a cavity for accommodating coolant and an interface for connecting to a liquid cooling pipe, the interface is in communication with the cavity, the cooling plate further includes a recess, and the interface is located in the recess; and the cover body covers at a location of the recess, and forms an accommodating space for accommodating an overflow liquid with the cooling plate. By the present invention, the problem of liquid leakage damage in a liquid cooling solution in the related art is solved.
Resumen de: EP4579804A1
Provided are a negative electrode material and a preparation method thereof, as well as a lithium ion battery. a negative electrode prepared from the negative electrode material act as an operating electrode, a metal lithium act as a reference electrode, the metal lithium act as a counter electrode, and an electrolyte contains metal lithium ions, forming a three-electrode battery for charging and discharging, and when the negative electrode material is electrified in a de-intercalation direction, a graph of a relationship between a differential value dQ/dV obtained by differentiating a potential V of the operating electrode based on the reference electrode to a charge and discharge capacity Q and the potential V of the operating electrode is obtained; and in the graph of the relationship between dQ/dV and the potential V, the differential value dQ/dV of the potential V between 20mV and 80mV has a maximum peak value A1, and the differential value dQ/dV of the potential V between 120mV and 210mV has a maximum peak value B1, where B1/A1≤4. According to the negative electrode material provided by the present disclosure, the volume expansion of the negative electrode material can be effectively inhibited and the cycle performance of the negative electrode material can be improved.
Resumen de: EP4578968A1
The present invention relates to a method of recovering lithium, and more particularly, to a method of recovering lithium including step (a) of dissolving cathode material powder having an olivine structure obtained from a cathode of a waste lithium-ion battery in an aqueous acetic acid solution to prepare a solution; step (b) of adding an aqueous hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) solution into the solution to obtain lithium-dissolved leachate and a leaching residue; step (c) of separating the leachate and the leaching residue; and step (d) of concentrating the leachate, wherein step (b) is performed at 45 to 65 °C; in step (a), acetic acid is used at a centration of 0.8 to 1.2 mol based on 1 mol of a cathode active material in the cathode material powder; and in step (b), hydrogen peroxide is used at a centration of 0.4 to 0.6 mol based on 1 mol of a cathode active material in the cathode material powder.According to the method of the present invention, by selectively leaching only lithium from a cathode material having an olivine structure using an oxidizer in a weakly acidic aqueous acetic acid solution within a predetermined temperature range, lithium may be recovered in a high yield. In addition, by preserving FePO<sub>4</sub> as a leaching residue and reusing FePO<sub>4</sub> as a raw material for lithium iron phosphate, productivity and economic efficiency may be greatly improved, and wastewater treatment is
Resumen de: EP4578828A1
A carbon nanotube dispersion composition includes carbon nanotubes (A), a dispersant (B), and a solvent (C). A particle diameter D50 at a cumulative volume of 50% according to laser diffraction particle size distribution measurement is 0.3 to 7 µm, and (1) and (2) below are satisfied.(1) The dispersant (B) is a polymer that has a weight average molecular weight of 5,000 or more and 360,000 or less and includes a carboxyl group-containing structural unit derived from at least one of (meth)acrylic acid and (meth)acrylate having a carboxyl group, and a content ratio of the carboxyl group-containing structural unit is 80 mass% or more based on a mass of the polymer.(2) When the particle diameter D50 at a cumulative volume of 50% according to laser diffraction particle size distribution measurement of the carbon nanotube dispersion composition is X µm, and a pH is Y, X and Y satisfy (Formula a) and (Formula b) below: Y≥−0.149X+4.545Y≤−0.134X+5.140.
Resumen de: EP4579796A1
This application relates to a lithium iron phosphate and a preparation method and application thereof, and an ammonium salt compound and application thereof. The method for preparing lithium iron phosphate includes: mixing iron phosphate, a lithium source, a carbon source, a dispersant, and a solvent to make a precursor slurry; sintering the precursor slurry to make lithium iron phosphate, where the dispersant includes an ammonium salt compound represented by Formula (1), in which R<sub>1</sub> is a carbon-containing organic group. The lithium iron phosphate prepared by the method for preparing lithium iron phosphate can improve charge and discharge capacities of the secondary battery.
Resumen de: EP4579865A1
A jelly-roll electrode assembly may include a first separator, a negative electrode, a second separator, and a positive electrode, which are sequentially laminated and wound. A core portion of the jelly-roll electrode assembly includes a rigid film disposed between the first separator and th second separator. A length of the rigid film in a longidudinal direction may be from 100% to 150% of an inner circumference of the jelly-roll electrode assembly and a tensile strength of the rigid film may be from 18 kgf/mm<sup>2</sup> to 25 kgf/mm<sup>2</sup>. A secondary batter may include the jelly-roll electrode assembly, and the jelly-roll electrode assembly may be manufactured by a method described herein.
Resumen de: EP4579795A1
This application relates to the field of battery technology, and in particular, to a composite positive electrode material and a preparation method thereof, a positive electrode plate, a battery, and an electrical device. The composite positive electrode material includes a composite formed by a positive active material and carbon. In a particle structure of the composite, a mass ratio of a carbon content inside to a carbon content on a surface is (0.8 to 2): 1. In the composite positive electrode material, the distribution of carbon in the particles is uniform, thereby effectively improving the overall electronic conductivity of the material.
Resumen de: EP4579847A1
A gel polymer electrolyte for a lithium battery, including a gel polymer and a liquid electrolyte, and a lithium battery including the same, wherein the liquid electrolyte includes a lithium salt and an organic solvent, and the gel polymer is a crosslinked product of i) a multifunctional acrylic first polymerizable monomer including three of more polymerizable functional groups, and ii) a second polymerizable monomer selected from among urethane-acrylic monomers including two more functional groups.
Resumen de: EP4579772A1
An apparatus (40, 100) and method for measuring an electrode plate thickness, which can measure a thickness of an active material coating layer formed on an electrode plate (10) before drying the electrode plate (10). The apparatus (40, 100) for measuring an electrode plate thickness includes a sensor module (110) disposed upstream of a drying furnace (50) to detect a thickness of an electrode plate (10), and a processor (140) configured to detect the thickness of the electrode plate (10) at each location in a width direction through the sensor module (110), to calculat an active material coating thickness at each location based on the thickness of the electrode plate (10) at each location, to calculate a measurement error at each location due to thermal deformation of the sensor module (110), and to compensate the active material coating thickness at each location based on the measurement error at each location.
Resumen de: WO2024149476A1
The invention relates to a device (100; 100*) for coating a carrier substrate (006) with a powder material (004), comprising at least one first application mechanism (101) having a first roller (102; 102') and a second roller (103) which is adjacent to the first roller (102; 102'), which rollers form a first gap (104; 104') in the nip (107; 107') between their lateral surfaces, which first gap serves the purpose of film formation and through which first gap powder material (004) can be conveyed in order to form a first dry film (003') in the process, wherein the second roller (103; 103'), or an additional roller which is downstream of the second roller (103) in the direction of the material flow, forms a second gap (107) with a roller (103'; 106) acting as a counter-pressure roller (103'; 106), through which second gap a carrier substrate (106) to be coated can be guided, and the dry film (106) formed in the first gap (104; 104') can be applied to the carrier substrate. The first roller and the second roller (102; 103; 102'; 103') can be tilted in relation to one another in respect of the relative extension of their axes of rotation (R102; R103, R102'; R103') and are variable in their relative inclination (α) in that the first roller or the second roller (102; 103; 102'; 103') is mounted in the device so as to be pivotable about an actual pivot axle or an imaginary pivot axis (S) extending perpendicularly to the axis of rotation (R102; R103, R102'; R103') of the pivotable ro
Nº publicación: EP4577677A1 02/07/2025
Solicitante:
H C STARCK TUNGSTEN GMBH [DE]
H.C. Starck Tungsten GmbH
Resumen de: MX2025001003A
The present invention relates to a method for producing cathode material from spent batteries, and to cathode material obtained according to the method of the invention.
BOPI
Sede Electrónica
