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1470
resultados
Última actualización
07/05/2025 [07:48:00]
Resultados 1325 a 1350 de 1470
Resumen de: EP4542583A1
The present invention relates to: a sulfide-based solid electrolyte powder that generates photoluminescence at a wavelength of 660 to 750 nm; a method for producing the same; a sulfide-based solid electrolyte layer containing the sulfide-based solid electrolyte powder; and a lithium-ion secondary battery.
Resumen de: EP4541771A1
Disclosed herein are lithium-cobalt-based composite oxide particles obtained by a solid-phase process and capable of reducing the weight and thickness of a positive electrode material when used as a positive electrode active material for non-aqueous lithium secondary batteries or all-solid-state batteries and a method for producing the same. The lithium-cobalt-based composite oxide particles are formed of a lithium-cobalt-based composite oxide having an average primary particle diameter of 0.50 µm or less and show a weight loss on heating at 850°C of 1.5 mass% or less.
Resumen de: EP4542714A1
Disclosed is an alkali metal ion conductor which behaves as a liquid at a low temperature. The alkali metal ion conductor of the present disclosure is an alkali metal ion conductor comprising a salt, wherein the salt comprises a first cation, a second cation, and a first anion, the first cation is a tetraalkylammonium ion having an alkyl chain length of 5 or more, the second cation is an alkali metal ion, and the first anion is at least one anion selected from the group consisting of a bromine ion, a chlorine ion, and a hydrogen sulfate ion.
Resumen de: EP4542582A1
Disclosed is a technology which enables minimization of deterioration of charge/discharge characteristics when cracks occur in an electrolyte layer or electrode of a lithium-ion battery. The technology of the present disclosure includes a specific lithium-ion conductor in the electrolyte layer or electrode of the lithium-ion battery. The lithium-ion conductor of the disclosure contains a complex halide represented by LiGaX4 (where X is one or more halogens).
Resumen de: EP4542759A1
In a vehicle battery pack, for connecting a bus bar and a voltage detection terminal, laser welding having high reliability is possible.In order to realize this, the present invention has the following configuration. That is, there is provided a metal welded structure which is a welded structure including a first metal member (16), a second metal member (14) having a part overlapping with the first metal member (16), and a welded part (19) formed in the overlapping part, wherein the welded part (19) has a molten part formed by melting through the second metal member (14) in a thickness direction to the inside of the first metal member (16), when viewed in the overlapping direction, the welded part has a U-shape including a first linear part and a second linear part (20) extending from both sides of the first linear part in a longitudinal direction to respective ends, and the width D1 between two end points of the welded part (20) and the bead width W of the welded part (20) have a relationship of D1/W≥2.
Resumen de: EP4542719A1
The purpose of the present invention is to provide a secondary battery having a high energy density and excellent cycle characteristics, in which the secondary battery has a configuration making it possible to be assembled in a short time. The secondary battery of the present invention includes a laminate formed by winding a sheet having a negative electrode and separators disposed on both surfaces of the negative electrode so that the sheet is folded back a plurality of times; and a plurality of positive electrodes that are respectively disposed in each gap formed between the separators facing each other in the laminate.
Resumen de: EP4542663A1
According to one embodiment, a positive electrode is provided. The positive electrode includes a positive electrode active material including a lithium-nickel-cobalt-manganese composite oxide represented by general formula Lia-bNi1-x-y-zCoxMnyMzO2. A ratio Co/Mn in the lithium-nickel-cobalt-manganese composite oxide is 1.0 or less. In the above general formula, 0.9 < a ≤ 1.25, 0 < x < 0.3, 0 < y < 0.3, 0 < z < 0.2, and x+y+z < 1. For the positive electrode, entropy change ΔS0≤b<0.1 when 0 ≤ b < 0.1 satisfies the following formula (1), and entropy change ΔS0.5
Resumen de: EP4542710A1
To address the issue that the existing lithium ion battery with positive electrode containing manganese impacts battery performance, the application provides a lithium ion battery, which includes a positive electrode, a negative electrode, a non-aqueous electrolyte and a separator, and the separator is positioned between the positive electrode and the negative electrode, the positive electrode includes a positive electrode material layer, the positive electrode material layer includes a lithium manganese-based positive electrode active material, the non-aqueous electrolyte includes a non-aqueous organic solvent, a lithium salt and an additive, and the additive includes a compound represented by structural formula 1:the lithium ion battery meets the following requirements:0.1≤q*m/p≤20; and 20≤q≤60,0.01≤m≤2,1.5≤p≤5;The lithium ion battery provided by the invention can significantly reduce the ion exchange between Mn<2+> and lithium in the negative electrode, prevent manganese from damaging the negative electrode, and increase the stability of the negative electrode, thereby improving the safety performance of the lithium ion battery while ensuring its high energy density and cycle performance.
Resumen de: EP4542707A1
A lithium salt-free composite solid electrolyte membrane and a preparation method thereof are provided. The composition of the lithium salt-free composite solid electrolyte membrane includes: micro-nanoscale garnet-type solid electrolyte and polymer; where a mass ratio of the micro-nanoscale garnet-type solid electrolyte to the polymer is (60-100) : (5-40); a particle size of the micro-nanoscale garnet-type solid electrolyte is 100 nm - 2 µm. The disclosure also provides a preparation method for the lithium salt-free composite solid electrolyte membrane. The lithium salt-free composite solid electrolyte membrane prepared by the disclosure has controllable morphology and thickness, and does not need to add lithium salt and be equipped with anhydrous and inert environment atmosphere, so that the production cost can be significantly reduced, and large-scale production is easy.
Resumen de: EP4542747A1
Provided is a battery pack. The battery pack includes multiple battery cells, a casing, and multiple battery modules. A support beam is disposed in the casing. The support beam divides the interior space of the casing into multiple compartments. A connecting channel is formed between the bottom of the support beam and the inner bottom face of the casing. The connecting channel connects two adjacent compartments. Each battery module is disposed in a corresponding compartment.
Resumen de: EP4542669A1
A secondary battery belonging to the technical field of batteries is provided. The secondary batter includes a positive electrode sheet, a separator, and a negative electrode sheet. The positive electrode sheet includes a positive electrode material including a first active material and a second active material. The first active material is a layered structure material, and the second active material is an olivine structure material. A mass ratio of the second active material to a sum of masses of the first active material and the second active material is 5 wt% to 30 wt%. A discharge curve of the secondary battery has a first voltage platform and a second voltage platform.
Resumen de: EP4542763A1
The present application provides a battery cell, a battery and an electrical apparatus. The battery cell comprises: an end cover assembly, comprising an electrode terminal; a housing, provided with an opening, the end cover assembly closing the opening; an electrode assembly, provided in the housing and comprising a tab; an adapter component, connected between the tab and the electrode terminal, the adapter component comprising a first connecting area used for connecting the electrode terminal, a second connecting area used for connecting the tab and a transition connecting area located between the first connecting area and the second connecting area; and an insulating member, covering at least part of the transition connecting area. According to embodiments of the present application, the transition connecting area of the adapter component is covered by the insulating member, so that the service life and safety performance of the battery cell can be improved.
Resumen de: EP4542713A1
The present invention provides a lithium secondary battery including a negative electrode, a positive electrode positioned opposite to the negative electrode, a separator disposed between the negative electrode and the positive electrode, and a non-aqueous electrolyte, wherein the negative electrode includes a silicon-based active material, the silicon-based active material comprises a compound represented by SiOx, wherein 0≤x<2, the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, the additive includes a first additive and a second additive, the first additive includes a coumarin-based compound represented by a specific formula, and the second additive includes at least one of lithium fluoromalonato(difluoro)borate (LiFMDFB), lithium difluoro(oxalato)borate (LiDFOB), lithium difluorophosphate (LiDFP), or lithium difluorobis-(oxalate)phosphate (LiDFOP).
Resumen de: EP4542246A1
The present invention relates to a battery diagnosis method capable of diagnosing the state of a battery including a plurality of battery cells connected in parallel, and a battery diagnosis apparatus and a battery system for providing the method, and the battery diagnosis apparatus of the present invention includes a measuring unit that measures a battery voltage which is the voltage between both terminals of a battery including a plurality of battery cells, a battery current that is a current flowing through the battery, and a battery temperature which is the temperature of the battery, a storage unit that stores an internal resistance value calculated on the basis of the battery voltage and the battery current, the state of charge (SOC) estimated by a predetermined method, and the measured battery temperature at each diagnosis time of diagnosing defects of the battery, and a control unit that extracts, at each diagnosis time, a plurality of diagnosis times satisfying a first condition that environment data should belong to a predetermined environment section to which environment data at the diagnosis time belongs, and a second condition that the plurality of diagnosis times should be previous diagnosis times corresponding to a predetermined number of samples from the diagnosis time, and calculates a moving average which is the average of a plurality of internal resistance values corresponding to the plurality of diagnosis times, respectively, and diagnoses defects of the b
Resumen de: EP4542711A1
A non-aqueous electrolyte solution for a secondary battery, containing a first compound represented by the following Formula (1), a second compound represented by the following Formula (2), a non-aqueous solvent, and an electrolyte.
Resumen de: WO2023249950A2
Equipment and a machine and a process for continuously casting strips of battery foils and/or strips of battery grids. The battery foils and grids are composed of lead or a lead alloy material. The foils, in particular, can be employed as current collectors in bipolar batteries. The machine, per an implementation, has a mold ring, a movable belt, one or more rollers, and one or more shoes. The mold ring rotates and has a mold cavity. The mold cavity can establish foil molds or grid molds. The movable belt moves about the roller(s) with a face in confrontation with the mold ring. The shoe(s) urges the movable belt into engagement with the mold ring. Liquid lead is delivered to the mold cavity adjacent the location in which the movable belt engages the mold ring amid use of the machine.
Resumen de: EP4542746A1
The present invention provides a battery cell fixing apparatus for fixing a battery cell 100 comprising a battery case 110 and an electrode assembly 120 accommodated in the battery case 110, the battery cell fixing apparatus comprising: a first frame 210 in contact with one side surface in a first direction of the battery case 110 to press toward other direction of the first direction and fix the battery cell 100 while not pressing toward the other direction of the first direction and not fixing the one side end E1 or the other side end E2 in the second direction by not being in contact with one side end E1 or other side end E2 in a second direction intersecting with the first direction of one side surface in the first direction of the battery case. Accordingly, exterior defects of the battery case 110 due to the pressure applied by the battery cell fixing apparatus 200 may be prevented.
Resumen de: EP4541772A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a bimodal-type positive electrode active material, in which low energy density per unit volume and low stability of an overlithiated lithium manganese-based oxide are improved, and a lithium secondary battery including the same.
Resumen de: EP4542716A1
The present invention relates to a method for manufacturing a lithium secondary battery and a lithium secondary battery, the method including a first step of manufacturing a battery cell by disposing an electrode assembly in a battery case, and injecting electrolyte, and a second step of performing a pre-cycle for the battery cell at least three times in a voltage range of 2.50 V to 4.35 V.
Resumen de: EP4542720A2
A method for analyzing deformation of a secondary battery having an electrode assembly received in a case, the method including obtaining a first image by performing computed tomography (CT) imaging on the secondary battery, calculating a first summation value of long and short diameters of the case from the first image, obtaining multiple charge and discharge cycles of the secondary battery after charging and discharging the secondary battery multiple times so that the secondary battery deteriorates, obtaining a second image by performing CT imaging on the deteriorated secondary battery, calculating a second summation value of the long and short diameters of the case from the second image and determining that the electrode assembly is deformed if a value obtained by subtracting the first summation value from the second summation value is greater than a reference value.
Resumen de: EP4542756A1
Disclosed in the present disclosure is a busbar structure, including a plurality of conductive busbars arranged in a first direction, two adjacent conductive busbars being provided vertically flipped over, in which the conductive busbar includes a first conductive unit for being connected to positive electrodes of cells and a second conductive unit for being connected to negative electrodes of cells, the first conductive unit and the second conductive unit are arranged in a second direction, each conductive busbar is used to connect the cells, arranged in two adjacent zigzagged cell rows along the second direction, in series along the first direction in a zigzag pattern, respectively.
Resumen de: EP4542761A1
The present invention relates to an electrode tab for a secondary battery, the electrode tab including: a first member and a second member having different resistances, the second member being located in at least a portion of the electrode tab and having a resistance greater than that of the first member; and a cutoff part configured to be melted by its own resistance heat to interrupt current when an overcurrent of 10 A or higher flows.
Resumen de: EP4542676A1
The present application relates to a negative electrode composition, a negative electrode for a lithium secondary battery, and a lithium secondary battery including the negative electrode.
Resumen de: EP4542675A1
The present application relates to a method for manufacturing an electrode for a lithium secondary battery, an electrode intermediate, and a lithium secondary battery including an electrode.
Nº publicación: EP4542684A1 23/04/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
Samsung SDI Co., Ltd
Resumen de: EP4542684A1
An additive represented by Chemical Formula 1, an electrolyte for a rechargeable lithium battery, and a rechargeable lithium battery are disclosed:The description of Chemical Formula 1 follows the specification.
BOPI
Sede Electrónica
