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1363
resultados
Última actualización
13/09/2025 [07:35:00]
Resultados 1125 a 1150 de 1363
Resumen de: WO2025183138A1
A power storage module (10) comprises at least one power storage device (20), a case (40) that accommodates the at least one power storage device (20), a cooling liquid (50) in which the at least one power storage device (20) is immersed inside the case (40), and a switching device (60) for switching between a state in which a gas that is inside the case (40) is discharged from the case 40 and a state in which the cooling liquid (50) is collected from the gas.
Resumen de: EP4611088A1
Disclosed is an electrode assembly for secondary batteries, the electrode assembly including a first electrode plate having side A and side B on which a non-coated portion is formed at each of a first leading edge and a first trailing edge of both side-A and side-B and a positive electrode tab, a second electrode plate having side A and side B on which a non-coated portion is formed at each of a first leading edge and a first trailing edge of both side-A and side-B and a negative electrode tab, a separator interposed between the first electrode plate and the second electrode plate, a tab cover tape attached to each of the positive electrode tab and the negative electrode tab, a first insulating tape attached to the non-coated portion, and a second insulating tape attached to the non-coated portion.
Resumen de: EP4609984A1
A jig according to an embodiment of the present disclosure, which is a jig configured to support an electrode that is transferred along a first direction and includes a coated portion coated with an electrode active material and an uncoated portion not coated with the electrode active material, includes a first support unit configured to support an area corresponding to the uncoated portion in the electrode and including a laser receiving portion formed at a position corresponding to an area irradiated with a laser for cutting the uncoated portion; and a second support unit including at least one support roller configured to support an area corresponding to the coated portion in the electrode.
Resumen de: EP4611077A1
Provided is a negative electrode-free battery which includes: a positive electrode; a negative electrode facing the positive electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium transition metal oxide, the negative electrode includes a negative electrode current collector for a negative electrode-free battery, the negative electrode current collector for a negative electrode-free battery includes a metal current collecting substrate, the metal current collecting substrate includes a space portion, at least a portion of which is exposed to the outside, and a specific relational formula is satisfied.
Resumen de: EP4611053A1
A positive electrode sheet and a preparation method therefor, and a battery and an electric device. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer, which is arranged on at least one side surface of the positive electrode current collector and comprises a positive electrode active material, wherein the positive electrode active material comprises a sodium-containing positive electrode active material. The thickness of the positive electrode sheet satisfies Dmax/Dmin being 104.5%-300%. After the positive electrode sheet and a negative electrode sheet are assembled into a battery, the thickness of the positive electrode sheet is Dmax when the battery is at 0% SOC, and the thickness of the positive electrode sheet is Dmin when the battery is at 100% SOC. The negative electrode sheet comprises a negative electrode current collector. When the battery is at 100% SOC, at least one side surface of the negative electrode current collector is provided with a sodium metal layer.
Resumen de: EP4611094A1
Provided in the present application is a secondary battery. The secondary battery comprises: a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network crosslinked pore structure; and the electrolyte comprises a cyclic carbonate compound represented by formula I. By means of the cooperation of the three-dimensional network crosslinked pore structure of the silicon-carbon composite material and the cyclic carbonate compound of the electrolyte, the volume effect of an active material during the charging and discharging process is inhibited, the direct current resistance and gas output of the battery are reduced, and the cycle capacity retention rate of the battery is improved.
Resumen de: EP4611062A1
The present application provides a secondary battery and an electrical apparatus. The secondary battery comprises: a negative pole piece and an electrolyte, the negative pole piece comprising a silicon-carbon composite material having a three-dimensional-network cross-linked pore structure; and the electrolyte comprising lithium fluorosulfonyl imide. The three-dimensional-network cross-linked pore structure of the silicon-carbon composite material acts in connect with the lithium fluorosulfonyl imide in the electrolyte to enhance the high-temperature cycle performance and the storage performance of the battery.
Resumen de: EP4611061A1
The present application provides a secondary battery (1). The secondary battery (1) comprises: a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network crosslinked pore structure; and the electrolyte comprises dimethyl carbonate. By means of the cooperation of the three-dimensional network crosslinked pore structure of the silicon-carbon composite material and dimethyl carbonate in the electrolyte, the volume effect of an active material during a charging and discharging process is inhibited, the interface stability is improved, the internal resistance of the battery is reduced, and the cycle capacity retention rate and the charging and discharging performance at a high rate of the battery are improved.
Resumen de: EP4611164A1
A battery cell includes a cell case including a sidewall and a top plate having a through-hole formed therein; an electrode terminal coupled to the through-hole and having a coupling groove formed in a bottom portion; an electrode assembly; and a first current collector electrically connecting the electrode terminal to the electrode assembly, wherein the first current collector includes a connection terminal having a protrusion inserted and coupled to the coupling groove, wherein the protrusion is coupled to the electrode terminal by welding performed on an outer side of the cell case, and wherein, in a welded region where the protrusion and the electrode terminal are welded, a thickness of the connection terminal has a value equal to or greater than that of a thickness of the electrode terminal.
Resumen de: EP4611096A1
An electrolyte for a lithium secondary battery according to exemplary embodiments may include an additive including a compound having a specific structure, an organic solvent and a lithium salt. Accordingly, a lithium secondary battery including the electrolyte for a lithium secondary battery may have improved flame retardant characteristics and lifespan characteristics while suppressing a thickness increase in a high temperature environment.
Resumen de: EP4611057A1
The present application discloses a lithium secondary battery and an electric device. The lithium secondary battery comprises a positive electrode sheet and a negative electrode sheet; a positive electrode active material layer comprises a positive electrode active material Li1+aM1bFe1-cAcP1-dEdO4 having a mass ratio of not less than 85 wt%; a negative electrode active material layer comprises graphite having a mass ratio of not less than 85 wt%; the surface density of the positive electrode active material layer located on a single side of the positive electrode sheet is CWc, with a unit of g/1540.25 mm2, and the reversible lithium capacity thereof is Dc, with a unit of mAh/1540.25 mm2; the reversible lithium capacity of the negative electrode active material layer on the side of the negative electrode sheet facing the positive electrode sheet is Da, with a unit of mAh/1540.25 mm2; the initial lithium-intercalation capacity of the negative electrode active material layer on the side of the negative electrode sheet facing away from the positive electrode sheet is Ca, with a unit of mAh/1540.25 mm2; the conductivity of an electrolyte in the lithium secondary battery at 25°C is ρ, with a unit of S/cm; the lithium secondary battery satisfies: Formula 1: 1.0337+0.37 × CWc - 7.79 × ρ ≤ K1 ≤ 1.07+0.93 × CWc - 2.9 × ρ ; and/or, Formula 2: 1.1485+0.43 × CWC - 9.2 × ρ = K2 ≤ 1.13+1.069×CWc - 1.7 × ρ ; wherein, (a).
Resumen de: EP4611101A1
The present application provides an electrolyte, a secondary battery and an electrical apparatus. The electrolyte contains a sodium salt and metal ions having ionic radii greater than that of a sodium ion. The electrolyte can effectively inhibit sodium dendrites, helping to improve the cycle performance and the high-temperature storage performance of batteries.
Resumen de: EP4611154A1
Electrochemical devices are disclosed for various applications such as secondary batteries. In an embodiment, an electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte. The separator includes a porous separator including inorganic fibers or including inorganic particles and a polymer binder, and the electrolyte includes a nitrile-based compound. The electrochemical device exhibits high ionic conductivity by including the porous separator having wettability to the electrolyte.
Resumen de: EP4611093A1
Electrochemical devices are disclosed for various applications such as secondary batteries. In an embodiment, an electrochemical device including a positive electrode, a negative electrode, a separator, and an electrolyte. Specifically, the separator includes a porous polymer membrane including one or more of hydrophilic inorganic particles or a hydrophilic polymer that are blended in a porous substrate, and the electrolyte includes a nitrile-based compound. The electrochemical device exhibits high ionic conductivity by including the porous separator having wettability to the electrolyte.
Resumen de: EP4611095A1
Electrochemical devices are disclosed for various applications such as secondary batteries. In an embodiment, an electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte. The separator includes a porous hydrophilic polymer membrane, and the electrolyte includes a nitrile-based compound. The electrochemical device exhibits high ionic conductivity by including the porous separator having wettability to the electrolyte.
Resumen de: EP4611065A1
The present invention provides a positive electrode active material composite comprising a positive electrode active material substrate and a coating layer comprising a compound represented by Formula 1 below coated on the positive electrode active material substrate, a positive electrode comprising the positive electrode, and a lithium-ion secondary battery comprising the positive electrode. Formula 1 LiaTibOc-dXd
Resumen de: EP4611128A1
The present technology provides a battery cell assembly including: a cell block with a plurality of battery cells; a first cover plate facing a first surface of the cell block, and including a first cooling channel; a second cover plate facing a second surface of the cell block, and including a second cooling channel; a supply pipe into which a cooling fluid supplied from the outside flows, the supply pipe including a first supply channel connected to an inlet of the first cooling channel and a second supply channel connected to an inlet of the second cooling channel; and a discharge pipe configured to discharge the cooling fluid to the outside, the discharge pipe including a first discharge channel connected to an outlet of the first cooling channel and a second discharge channel connected to an outlet of the second cooling channel.
Resumen de: EP4610294A1
The present invention relates to: a binder comprising a polyamide polymer containing a monomer unit including an aromatic ring; a positive electrode slurry comprising same; a positive electrode; and a secondary battery.
Resumen de: EP4611153A1
The present invention relates to a polymer composition, and a slurry composition, a separator and a secondary battery comprising same, the polymer composition comprising: a particle-type polymer comprising a carboxyl group or an alcohol group; and a chain-type polymer comprising a carboxyl group or an alcohol group (if the particle-type polymer comprises the carboxyl group, the chain-type polymer comprises the alcohol group and, if the particle-type polymer comprises the alcohol group, the chain-type polymer comprises the carboxyl group).
Resumen de: EP4611117A1
Disclosed is a material separation method for recycling a battery cell, the material separation method including: a disassembling operation of separating an electrode assembly from which a pouch has been removed from a battery cell into first electrode plates, second electrode plates, and a separator, in which the disassembling operation may include: a separator opening operation of opening the separator surrounding the electrode assembly; and a main disassembling operation of separating the first electrode plates and the second electrode plates from the electrode assembly in which the separator is opened.
Resumen de: EP4611106A1
The present invention relates to an electrode assembly for a secondary battery, the electrode assembly having a shape in which an electrode stack, which includes: a positive electrode including a positive electrode current collector and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector; a negative electrode including a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector; and a separator interposed between the positive electrode and the negative electrode, is wound, wherein an end, which faces a winding center, of both ends in a longitudinal direction of the negative electrode is a negative electrode non-coating portion on which the negative electrode active material layer is not disposed, and an end, which faces the winding center, of both ends in a longitudinal direction of the positive electrode is disposed with a ceramic-containing film member.
Resumen de: EP4611059A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material capable of preventing and/or mitigating the degradation of electrochemical properties and lifetime of the positive electrode active material caused by lithium impurities and/or a washing process by removing lithium impurities through surface modification without a washing process for reducing the content of lithium impurities such as LiOH and Li<sub>2</sub>CO<sub>3</sub> remaining on the surface of the positive electrode active material, and a lithium secondary battery using a positive electrode including the positive electrode active material.
Resumen de: EP4611156A1
The present application provides a composite separator, a secondary battery, and an electrical apparatus. The composite separator comprises a separator substrate and a polymer coating located on one side of the separator substrate, the sodium ionic conductivity of the composite separator being 0.3 mS/cm-1 mS/cm. The polymer coating helps to reduce the contact between metal deposited on current collectors and electrolytes, thereby reducing side reactions between the metal and the electrolytes, and improving the cycle performance and the storage performance of batteries.
Resumen de: EP4611064A1
Embodiments of this application relate to a positive electrode active material, a positive electrode plate, a secondary battery, and an electric device. The positive electrode active material includes a first active material and a second active material. The first active material includes a compound having a molecular formula of Li<sub>1+x</sub>Fe<sub>1-y</sub>A<sub>y</sub>P<sub>1-z</sub>Q<sub>z</sub>O<sub>4</sub> and a modified compound thereof. The second active material includes a compound having a molecular formula of Li<sub>h</sub>Ni<sub>j</sub>Co<sub>k</sub>M1<sub>d</sub>M2<sub>e</sub>O<sub>f</sub>R<sub>g</sub> and a modified compound thereof. The embodiments of this application can improve capacity utilization and cycle performance of a secondary battery.
Nº publicación: EP4611130A1 03/09/2025
Solicitante:
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited
Resumen de: EP4611130A1
This application discloses a battery cell, a battery, and a power-consuming apparatus. The battery cell includes a housing, a first insulating film, and an adhesive layer. The housing includes a first part and a second part, the first part is connected to the second part, and a surface energy of the second part is greater than a surface energy of the first part. The first insulating film covers at least one part of the housing. The adhesive layer is disposed between the second part and the first insulating film and configured to connect the first insulating film to the second part. Technical solutions provided in this application can improve reliability of the battery.
BOPI
Sede Electrónica
