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1532
resultados
Última actualización
18/03/2026 [07:26:00]
Resultados 525 a 550 de 1532
Resumen de: CN121100108A
The present invention provides a positive electrode active material for a non-aqueous electrolyte secondary battery, which is composed of Li Lix (Ni1-y-z-wCoyMnzMw) 1-x O2 (M is one or more elements other than Li, Ni, Co, Mn, and O; 0.1 < = x < = 0.15, 0lt; y < = 0.4, 0 < = z < = 0.4; and 0 < = w < = 0.1), and when a DTG curve of a sample charged using lithium as a counter electrode is divided into a plurality of peaks, has a first peak and a second peak in a temperature range of 150 DEG C to 350 DEG C, wherein a top portion of the first peak shows a maximum DTG value and a top portion of the second peak shows a maximum DTG value in peaks appearing at a peak top portion at a temperature that differs from a temperature appearing at the top portion of the first peak by at least 20 DEG C, and the DTG value at the top portion of the first peak is 1 to 9 times the DTG value at the top portion of the second peak.
Resumen de: EP4707836A1
A battery management apparatus according to an embodiment disclosed herein includes a voltage measurement unit configured to measure a voltage of each of a plurality of battery cells and a controller configured to calculate a first deviation, which is a deviation between a long moving average and a short moving average of a battery cell voltage of each of the plurality of battery cells, calculate a second deviation, which is a deviation between a long moving average and a short moving average of an average voltage of the plurality of battery cells, and calculate a first diagnosis deviation between the first deviation and the second deviation for each of the plurality of battery cells, diagnose each of the plurality of battery cells based on whether a final diagnosis deviation related to the first diagnosis deviation of each of the plurality of battery cells is at least a first threshold value and based on a time during which the final diagnosis deviation is maintained as being at least a second threshold value.
Resumen de: EP4708537A1
A method for preparing a composite coating separator is disclosed. The method includes: mixing raw materials including an inorganic powder, a hollow latex microsphere emulsion, a binder, and a solvent to obtain a mixed slurry; applying the mixed slurry to a surface of a base film, and drying the mixed slurry on the surface of the base film to obtain the composite coating separator. A mass ratio of the inorganic powder in the mixed slurry is 20%-35%, and a mass ratio of the hollow latex microsphere emulsion in the mixed slurry is 5%-10%. A viscosity of the mixed slurry is 100 mPa.s-120 mPa.s. The hollow latex microsphere emulsion includes hollow microspheres, and a density of the hollow microspheres is 0.8 g/cm<sup>3</sup>-0.9 g/cm<sup>3</sup>.
Resumen de: EP4707236A1
The present invention relates to a carbon nanotube dispersion exhibiting low viscosity and little change in viscosity over time, which includes carbon nanotubes, a dispersant, and a dispersion medium, wherein the dispersant contains a first dispersant and a second dispersant in a weight ratio of 100:10 to 90, the first dispersant is a dispersant containing an N atom, the second dispersant is a compound containing a sulfonic group, a hydroxyl group, and an aromatic ring in a molecular structure, and the carbon nanotubes and the dispersant are present in a weight ratio of 100:25 to 500.
Resumen de: EP4708419A1
The invention relates to device (400) and a method for manufacturing a secondary battery (100). The resulting secondary battery (100) includes an electrode assembly (110) including a side that extends in a first direction, a case (150) accommodating the electrode assembly (110), a lead tab (132_1, 134_1) protruding from the side of the electrode assembly (110), and a strip terminal (142, 144) connected to the lead tab (132_1, 134_1). The lead tab (132_1, 134_1) is bent in the first direction. The strip terminal (240) includes a first section (242) connected to the lead tab (230) and extending in the first direction, and a second section (244) connected to the first section (242) and bent in a second direction that intersects the first direction. An angle between the first section (242) and the second section (244) is 90 degrees or less.
Resumen de: EP4708376A1
A positive electrode includes a positive electrode active material layer including a first positive electrode active material and a second positive electrode active material having different average particle diameters from each other. An average particle diameter D50 of the first positive electrode active material is larger than an average particle diameter D50 of the second positive electrode active material, the first positive electrode active material and the second positive electrode active material include single-particle type particles, and an interface resistance of the positive electrode having an SOC of 50% measured in a coin half-cell manufactured using the positive electrode is 6.5 Ω to 8.5 Ω, and an interface resistance of the positive electrode having an SOC of 10% measured in a coin half-cell manufactured using the positive electrode is 15 Ω to 19 Ω.
Resumen de: EP4708391A1
A lithium secondary battery includes: a positive electrode; a negative electrode; an electrolyte; and a separator. The positive electrode includes first and second positive electrode active materials having different average particle diameters (D<sub>30</sub>). The average particle diameter (D<sub>50</sub>) of the first positive electrode active material is larger than that of the second positive electrode active material. The first and second positive electrode active materials include single-particle type particles. The negative electrode includes a silicon-based negative electrode active material, and the lithium secondary battery has an IRF value of 1 to 1.4, defined by Equation 1 below. IRF=RpRn. In the Equation 1, each variable is the same as described above in this specification.
Resumen de: EP4708430A1
An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the electrolyte are disclosed. The electrolyte may include a nonaqueous (e.g., water-insoluble) organic solvent, a lithium salt, a first additive represented by Chemical Formula 1, and a second additive represented by Chemical Formula 2. A more detailed description of the first additive and the second additive is provided in the present disclosure.
Resumen de: EP4707234A1
A preparation method of a manganese iron phosphate precursor, a cathode sheet, and a lithium battery comprising: preparing the precursor based on a high-temperature calcination device. The high-temperature roasting furnace comprises a sprayer, a heater, and a particle size regulator. The method comprises: generating a manganese-containing solution from a manganese source and hydrochloric acid; generating an iron phosphate solution from an iron source, a phosphorus source, and hydrochloric acid; mixing the manganese-containing solution, iron phosphate solution, and dispersant to obtain a mixed solution; preheating the mixed solution; and transporting the mixed solution to the high-temperature roasting furnace; spraying and roasting the mixed solution in the high-temperature calcination furnace in the atmosphere of carrier gas, forming a powdered manganese iron phosphate precursor with at least two preset particle sizes; water washing and grinding, demagnetizing, and drying the manganese iron phosphate precursor to obtain the manganese iron phosphate precursor.
Resumen de: EP4708369A1
Provided is a secondary battery manufacturing system according to example embodiments of the present technology. The system includes a first controller configured to collect coordinate data, and a measuring device configured to collect measurement data of an electrode sheet, in which the measuring device is configured to relate the coordinate data with the measurement data to generate coordinate-related inspection data.
Resumen de: EP4707778A1
Disclosed is a learning apparatus and method for predicting adhesive force to an electrode, an electrode monitoring device and an electrode manufacturing method using a prediction model trained by using the same, and a lithium secondary battery manufactured by the same. The learning apparatus for predicting adhesive force to an electrode includes: a memory in which a near-infrared spectrum for an electrode and a measurement value of adhesive force of the electrode; a prediction model for predicting the adhesive force of the electrode by receiving a differential mean of a plurality of wave number sections including a characteristic for the adhesive force of the electrode in the near-infrared spectrum; and a processor for receiving the near-infrared spectrum, performing primary differentiation on the near-infrared spectrum, extracting the plurality of wave number sections from the primarily differentiated near-infrared spectrum, calculating the differential mean of the plurality of wave number sections, and transmitting the calculated differential mean to the prediction model, in which the processor receives a predicted value for the adhesive force of the electrode and trains the prediction model so that the predicted value is close to the measurement value.
Resumen de: EP4707835A1
Disclosed is a battery diagnosing apparatus and a battery diagnosing method. The battery diagnosing apparatus includes a data obtaining unit configured to obtain a first profile representing a capacity-voltage relationship of a battery cell containing at least two kinds of active materials, and a processor configured to generate a plurality of comparison profiles based on a plurality of electrode profiles included in an electrode profile map. The processor is configured to select, as a second profile, one comparison profile from the plurality of comparison profiles by comparing each of the plurality of comparison profiles with the first profile. The processor is configured to determine at least one diagnostic factor representing a degradation state of the battery cell based on the second profile.
Resumen de: EP4708479A1
The present disclosure provides a cover plate assembly and a battery. The cover plate assembly is mounted on a housing with an accommodation cavity, and comprises: a cover plate, provided with a first mounting hole in communication with the accommodation cavity; a collection component, located in the accommodation cavity and configured to obtain a parameter information inside the housing; a lower connection part, of which a first end is located in the first mounting hole and a second end is in communication connection with the collection component; and, an upper connection part, of which a first end is detachably in communication connection with the first end of the lower connection part and a second end passes through the first mounting hole.
Resumen de: EP4708375A1
The present invention relates to a positive electrode, a manufacturing method therefor, and an all-solid-state battery including same, wherein the positive electrode includes a positive electrode active material layer, the positive electrode active material layer includes a positive electrode active material, a sulfide-based solid electrolyte, and a binder, the binder includes a first binder having a weight average molecular weight of 300,000 g/mol or more and a second binder having a weight average molecular weight of 50,000 g/mol or less, and the second binder includes a thiol group. According to the present invention, it is possible to provide: the positive electrode having excellent adhesion between interfaces and/or between components in the positive electrode active material layer as well as excellent dispersibility, and having excellent high-rate discharge efficiency at 1.0C and capacity retention across cycles; a manufacturing method for the positive electrode; and an all-solid-state battery having excellent performance by including the positive electrode.
Resumen de: EP4707237A1
The present invention relates to: a silicon carbon composite having a peak A present in a range of 130 ppm to 150 ppm, a peak B present in a range of 110 ppm to 130 ppm, and a peak C present in a range of 15 ppm to 40 ppm during 13C-NMR analysis, and satisfying equation 1 below; a negative electrode active material comprising same; a negative electrode composition; a negative electrode; a lithium secondary battery; a battery module; and a battery pack. Equation 1 0.3 ≤ peak C intensity/(peak A intensity + peak B intensity) ≤ 2.1.
Resumen de: EP4708443A1
An electrolyte and a secondary battery, belonging to the technical field of secondary batteries. The electrolyte includes a lithium salt and a solvent. The solvent includes a cyclic carbonate, a linear carbonate, and a carboxylic ester. A mass percentage of the cyclic carbonate is 8% to 24%. The linear carbonate includes a dimethyl carbonate and at least one of a methyl ethyl carbonate and a diethyl carbonate. A mass percentage of a mass sum of the methyl ethyl carbonate and the diethyl carbonate is 2% to 10%. A mass percentage of the carboxylic ester is 20% to 40%. The carboxylic ester includes a first component and a second component. Viscosities of the first and second components at 25±2°C are respectively 0.4 mPa·s to 0.5 mPa·s and 0.3 mPa·s to 0.4 mPa·s. Mass percentages of the first and second components are respectively 15% to 40% and 0% to 15%.
Resumen de: EP4707352A1
The present disclosure provides a bonding structure, a bonding method, an insulating adhesive tape, and a battery. The insulating adhesive tape includes a first bonding area and a second bonding area disposed at intervals, and a non-bonding area disposed between the first bonding area and the second bonding area. The first bonding area is configured to bond a cell, the second bonding area is configured to bond a welding area formed by a tab of the cell and a current collector, and the non-bonding area is configured to correspond to a bending area of the tab.
Resumen de: EP4708390A1
A positive electrode active material includes a lithium composite transition metal oxide in the form of a single particle composed of one single nodule and/or in the form of a pseudo-single particle, which is a composite of 30 or less nodules, and a coating layer formed on the surface of the lithium composite transition metal oxide. The coating layer contains aluminum (Al) and tungsten (W). The positive electrode active material satisfies Equation 1 below: 45≤X×X′≤56 wherein, X is the content of nickel among all metals except for lithium in the lithium composite transition metal oxide(unit: mol%), and X' is the BET specific surface area of the positive electrode active material (unit: m<2>/g).
Resumen de: EP4708389A1
A positive electrode active material according to the present invention includes a lithium composite transition metal oxide which has an amount of nickel among total metals excluding lithium of 50 mol% to 80 mol% and is in a form of a single particle composed of one single nodule or a pseudo-single particle that is a composite of 40 or less nodules; and a tungsten-containing coating layer formed on a surface of the lithium composite transition metal oxide, wherein a ratio (Li/W) of the number of moles of lithium to the number of moles of tungsten, which is measured by inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis after performing a pretreatment under conditions of immersing the positive electrode active material in deionized water at 25°C for 1 hour, satisfies a range of 30 to 45.
Resumen de: EP4708468A1
A secondary battery includes an electrode assembly including a plurality of unit batteries stacked in a first direction and having electrode leads on opposing ends in a second direction perpendicular to the first direction; a multifunctional terminal block (MTB) included on the opposing ends of the electrode assembly; and a laminate sheet coupled to a side surface of the stack-type electrode assembly, wherein the MTB includes a fused resin layer on a side surface thereof.
Resumen de: EP4708557A1
A pouch cell manufacturing method of the present disclosure prevents the sealing quality of a pouch from being deteriorated by an electrolyte solution, by reducing the amount of the electrolyte solution staining the sealing portion of the pouch, and a pouch cell in which gas inside the pouch can be efficiently discharged to the outside of the pouch is provided. The pouch cell of the present disclosure includes: an electrode assembly; a pouch within which the electrode assembly is accommodated; and a gas discharge pipe that is disposed such that the gas discharge pipe extends from the inside of the pouch to the outside, in which gas inside the pouch can be transmitted through the gas discharge pipe and discharged to the outside of the pouch.
Resumen de: EP4707830A1
The present invention relates to a positive electrode comprising a positive electrode active material, wherein a resistance component ratio, as defined by equation 1 below, is 2 or more. Equation 1 R<sub>ct</sub> / R<sub>s</sub>. In the equation, R<sub>ct</sub> means a charge transfer resistance of the positive electrode, which is measured in a first frequency range for a secondary battery comprising the positive electrode, R<sub>s</sub> means a surface or interface resistance of the positive electrode, which is measured in a second frequency range for the secondary battery comprising the positive electrode, the first frequency range is from 1 Hz to 1 kHz, and the second frequency range is from more than 1 kHz to 1,000 kHz.
Resumen de: EP4708525A1
A battery enclosure according to certain embodiments of the present disclosure comprises: an enclosure having an accommodation space therein, a battery rack that is fixed to the accommodation space inside the enclosure and includes at least one battery, and a control panel that provides an electrical connection between an electrical device located outside the enclosure and the battery rack, wherein the control panel is connected to the battery rack via a first cable, and wherein the first cable extends from the control panel located on one side of the enclosure toward the other side of the enclosure within a first power distribution space formed on an upper part of the enclosure.
Resumen de: EP4708501A1
A battery enclosure according to certain embodiments of the present disclosure comprises: an enclosure having an accommodation space therein, a battery rack that is fixed to the accommodation space inside the enclosure and includes at least one battery, and a control panel that provides an electrical connection between an electrical device located outside the enclosure and the battery rack, wherein the size occupied by the control panel in a longitudinal direction of the enclosure is less than or equal to twice the length value of the battery.
Nº publicación: EP4708463A1 11/03/2026
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
Resumen de: EP4708463A1
Provided is a battery pack comprising: a plurality of cell assemblies each of which includes a cell stack comprising a plurality of battery cells stacked together and a cooling member covering at least one surface of the cell stack; and a pack housing in which the plurality of cell assemblies are accommodated, wherein the cooling member includes: a base plate arranged to be opposite to the bottom surface of the cell stack; at least one side plate arranged to be opposite to the cell stack in the stacking direction of the plurality of battery cells and coupled to the pack housing; and a flow path part provided across the base plate and the at least one side plate and configured to allow a coolant to flow therethrough.
BOPI
Sede Electrónica
