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1121
results.
Updated on
22/04/2026 [16:11:00]
Results 475 to 500 of 1121
Absstract of: EP4726908A1
The present disclosure relates to a cylindrical secondary battery, and more specifically, to a cylindrical secondary battery capable of suppressing the upward movement of an electrode assembly inside a battery can even when the battery can is heated. A cylindrical secondary battery according to the present disclosure includes a battery can having an open top end portion, an electrode assembly accommodated in the battery can, a top cap assembly coupled to the top end portion of the battery can and formed with a gas outlet for discharging gases generated inside the battery can, and a thermal expansion tape attached to an upper region of the inner wall of the battery can and expanding when the battery can is heated, thereby suppressing the upward movement of an electrode assembly accommodated in the battery can even when heat is applied to the battery can, which may prevent a gas outlet formed at the top of the battery can from being blocked.
Absstract of: EP4726954A1
According to an embodiment disclosed herein, a battery charging method includes measuring a first voltage between a negative electrode of a battery and a reference electrode and a second voltage between a positive electrode of the battery and the reference electrode and charging the battery by applying a voltage to the battery such that the first voltage satisfies a constant value.
Absstract of: EP4726415A1
0001 A battery cell inspection apparatus according to an embodiment disclosed in this document may include a sensor configured to obtain an impedance value and at least two open-circuit voltage (OCV) values at different time points for each of a plurality of battery cells, and a processor configured to calculate a deviation (dOCV) between the OCV value at a first time point and the OCV value at a second time point, calculate a charge transfer resistance (R
Absstract of: EP4726822A1
0001 The present disclosure discloses a stacking apparatus including: an electrode stacking device configured to alternately and continuously stack a first electrode and a second electrode on a stacking region using a first rotary body that transports the first electrode and a second rotary body that transports the second electrode; a separator stacking device configured to stack a separator that is connected as one between the first electrode and the second electrode and between the second electrode and the first electrode; and a controller configured to control driving of the electrode stacking device and the separator stacking device. The controller is configured to control an operation of the separator stacking device to stack the separator in a two-dimensional trajectory in an up-down (z-axis) direction and a left-right (x-axis) direction while the stacking region is in a fixed state. According to the present disclosure, a continuous separator may be stacked to separate a positive electrode and a negative electrode from each other without sagging.
Absstract of: EP4725910A1
A method for preparing a single-particle type positive electrode active material precursor includes (a) mixing a nickel-based hydroxide and an inactive lithium salt to prepare a mixture; and (b) performing a first heat treatment on the mixture to obtain a nickel-based oxide in a form of single particles. According to some example embodiments, a positive electrode active material precursor and a method for preparing the same, and a method for preparing a positive electrode active material including the same minimize or reduce the production process, thereby ensuring long cycle-life characteristics and improving high-temperature storage characteristics. A rechargeable lithium battery using the positive electrode active material can exhibit high initial charging and discharging capacity and efficiency, and can implement long cycle-life characteristics.
Absstract of: EP4726883A1
According to an aspect of the present disclosure, there is provided a battery pack that is attachable to and detachable from an object by relatively moving the battery pack in a predetermined direction to the object, the battery pack including: a plurality of pouch-type battery cells arranged in a row in the predetermined direction with each of electrodes of the pouch-type battery cells on a same side; and a wiring board configured to allow the electrodes of the pouch-type battery cells to be connected thereto.
Absstract of: EP4726874A1
0001 A crimping device configured to crimp a housing of a cylindrical battery includes: a punch configured to crimp the housing by pressing an upper end of the housing; and a fixing unit including a punch insertion portion into which the punch is inserted and a can support portion supporting at least a portion of the housing and extending in one direction from the punch insertion portion while forming a stepped portion with the punch insertion portion.
Absstract of: EP4726823A1
0001 The present invention relates to a method for manufacturing an electrode assembly, and more particularly, to a method for manufacturing an electrode assembly, which is capable of improving limitations of conventional stacking technologies to secure a degree of freedom in cell design (a degree of freedom in tab position design, etc.), solving the problem of folding of a separator, and preventing a problem of non-cutting of the separator due to a process tolerance.
Absstract of: EP4726903A1
0001 According to one aspect of the present invention, there is provided a separator comprising: a porous substrate; an electrode adhesive layer provided on one surface of the porous substrate and including first inorganic particles and a first binder that mutually binds at least a part of the first inorganic particles to each other; and a heat-resistant layer provided on the other surface of the porous substrate and including second inorganic particles and a second binder that mutually binds at least a part of the second inorganic particles to each other, wherein the content of the first binder in the electrode adhesive layer is from 3 to 20 wt%. The present invention also provides a method for manufacturing the separator.
Absstract of: EP4726797A1
0001 An electrode according to an embodiment of the present disclosure may include a base current collector; a porous current collector stacked on the base current collector and having a larger thickness than the base current collector; and an active material layer coated on the porous current collector and having a larger thickness than the base current collector.
Absstract of: EP4726847A1
Die Erfindung schafft eine Batteriewanne zum Aufnehmen einer Batterie, insbesondere einer Fahrzeugbatterie, sowie Verfahren zum Herstellen einer Batteriewanne. Die Batteriewanne (100; 200) umfasst zumindest:ein Wannengehäuse (190; 290);wobei eine Schicht elektrischer Leiterbahnen (130) an oder über einer durchgehenden ersten Schicht (110; 205) des Wannengehäuses (190; 290) aus einem Verbundwerkstoff an dessen konkaver Seite angeordnet ist, undwobei in der Schicht elektrischer Leiterbahnen (130) zumindest an einem ebenen Abschnitt des Wannengehäuses (190; 290) eine Vielzahl von elektrisch auslesbaren Deformations-Messstrukturen (140) ausgebildet ist.
Absstract of: EP4726744A1
0001 According to one embodiment, there is provided a method for producing an LGPS-type solid electrolyte, comprising: allowing a first solution, in which a first compound comprising, as a counter ion, a monovalent or divalent metal atom M1 ion having an ionic radius larger than that of a Li atom, or an ammonium ion, is dissolved in a solvent, to come into contact with a cation exchange resin comprising a Li ion, so that the M1 ion or the ammonium ion comprised in the first compound is exchanged with the Li ion, thereby obtaining a second solution, in which a Li-containing compound is dissolved in the solvent, removing the solvent from the second solution to obtain Li-containing crystals, mixing the Li-containing crystals with Li<3>PS<4> crystals to obtain a precursor, and treating the precursor by heating, wherein the first compound consists of the M1 ion or the ammonium ion and an anion containing an S element and an Sn element.
Absstract of: EP4726417A1
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 an active material with a multi-phase characteristic, 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, and determine a negative electrode participation start point as a diagnostic factor representing a degradation state of the battery cell based on the second profile.
Absstract of: EP4726802A1
0001 The present application relates to a secondary battery and a power consuming apparatus. A negative electrode plate in the secondary battery includes a negative electrode current collector and a negative electrode film layer. The negative electrode film layer is disposed on at least one side of the negative electrode current collector. The negative electrode film layer includes a negative electrode active material. The negative electrode active material includes first graphite. A Dv50 particle size of the first graphite is 2.2 µm to 7.7 µm. An electrolyte solution includes an organic solvent and an organic additive. The organic solvent includes a first solvent. The first solvent includes cyclic carbonate. Based on a total mass of the organic solvent, a mass content of the first solvent is 25% to 40%. The organic additive includes a first additive and a second additive. The first additive includes vinylene carbonate. The second additive includes an ethylene carbonate derivative. Based on a total mass of the electrolyte solution, a mass percentage of the first additive in the electrolyte solution is 2% to 10%, and a mass percentage of the second additive in the electrolyte solution is 0.3% to 6%.
Absstract of: EP4726840A1
0001 A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes a positive electrode containing a composite of a sulfur active material and porous carbon, and a nonaqueous electrolyte containing a nonaqueous solvent, in which the nonaqueous solvent contains at least one type of cyclic carbonate selected from a group consisting of a fluorinated cyclic carbonate and an unsaturated cyclic carbonate, and a fluorinated ether, and the content of the cyclic carbonate in the nonaqueous solvent is more than 50 vol%, and the fluorinated ether is represented by the following formula (1): R<1>-O-R<2> ··· (1) (in the formula (1), R<1> is a fluorinated alkyl group having the number of carbon atoms of 1 to 3; R<2> is an alkyl group having the number of carbon atoms of 1 or 2).
Absstract of: WO2025022088A2
A separator for separating adjacent battery cells in a prismatic battery module. The separator comprises a cured foamed material, and the cured foamed material comprises a cured silicone polymer.
Absstract of: EP4726871A1
A pouch-type battery case according to the present invention includes a base layer, a gas barrier layer, and a sealant layer which are sequentially stacked, wherein the sealant layer includes a particle-type fire extinguishing agent, wherein the particle-type fire extinguishing agent includes one or more selected from the group consisting of a first fire extinguishing component containing sodium hydrogen carbonate, a second fire extinguishing component containing calcium hydrogen carbonate, a third fire extinguishing component containing ammonium phosphate, and a fourth fire extinguishing component containing urea, so that it is possible to provide a pouch-type battery case with improved safety.
Absstract of: EP4726877A1
A battery cell holder (100) to mount a battery cell (1) therein and a battery pack are disclosed. The battery cell holder may include a first body (110) at an upper portion and a lower portion of the battery cell, having a first set of exposure grooves to expose a first electrode terminal and a second electrode terminal of the battery cell, and extending around a side of the battery cell; a second body (120) coupled to the first body (110), at the upper portion and the lower portion of the battery cell, having a second set of exposure grooves to expose the first electrode terminal and the second electrode terminal of the battery cell, and extending around another side of the battery cell; a first electrode tab (130) that contacts a first electrode terminal of the battery cell; and a second electrode tab (140) that contacts a second electrode terminal of the battery cell.
Absstract of: EP4726405A1
Provided is a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus includes a data obtaining unit configured to obtain a first target full-cell profile representing a correspondence between a capacity factor and a voltage of a target cell while a first electric stimulation is being applied to the target cell, and a control circuit configured to generate an estimated full-cell profile based on the first target full-cell profile and an overpotential profile. The control circuit determines a first performance factor group as a primary estimation result for charge/discharge performance of the target cell by applying a cell diagnosis logic to the estimated full-cell profile. The control circuit determines a second performance factor group as a secondary estimation result for the charge/discharge performance of the target cell by applying a factor correction model to the first performance factor group. The second performance factor group includes an estimation result of a NP ratio of the target cell.
Absstract of: EP4726416A1
0001 A battery diagnosis apparatus according to one embodiment of the present invention is an apparatus for diagnosing the state of a battery pack including a plurality of cells, and may comprise: at least one processor; and a memory for storing at least one command executed through the at least one processor, wherein the at least one command can include the commands of: checking whether the battery pack enters a rest state after being fully charged; measuring a first voltage after a first time elapses after entering the rest state; measuring a second voltage after a second time elapses after entering the rest state; calculating a self-discharge amount of the battery pack on the basis of the first voltage and the second voltage; and determining the state of the battery pack by comparing the self-discharge amount of the battery pack to a preset threshold discharge current amount.
Absstract of: EP4726849A1
0001 A secondary battery testing device including: a support bulkhead configured to contact one side surface of a battery cell for an internal short-circuit test; a penetration bulkhead opposite to the support bulkhead and configured to contact an opposite side surface of the battery cell, the penetration bulkhead having an access opening extending therethrough toward the support bulkhead; a bulkhead connector connecting the support bulkhead and the penetration bulkhead to each other and maintaining a gap between the support bulkhead and the penetration bulkhead; an alignment mechanism mounted on the penetration bulkhead and having a nail guide corresponding to the access opening and having a guide passage; and a nail configured to penetrate the battery cell through the guide passage to cause an electrical short-circuit of the battery cell.
Absstract of: WO2025091093A1
A high-voltage battery module (1) for electrical energy transport and storage, comprising an electronic key and protection package (2), a battery (3) of cells (3.1) having flat washer electrodes with longitudinal channels (3.8) and a single built-in varistor (3.4) with galvanic decoupling thereto connected through one of these channels between terminals (3.2) and (3.3) at both its poles with conductors (3.6) and (3.7). For galvanic decoupling, in series with the varistor (3.4), their gas discharger (3.10) with the same allowable pulse discharge current. The varistor (3.4), together with the capacitive-resistive voltage divider composed of all cells and a longitudinal electrostatic screen-normalizer (5) arranged longitudinally around the housing (3.5), forms a complex built-in virtual-hardware protection for all elements from impulse surges on the battery (3). The channels (3.8), implemented as tubes (4) of dielectric film with hydrophobically treated longitudinal ends (4.1), form group valves for venting gases possibly emitted during operation.
Absstract of: EP4726931A2
The present application belongs to the technical field of battery production. Provided are an electronic control device, a battery device, a related device, an energy storage system, and a charging network. The electronic control device comprises a battery management circuit board and an electrical connection assembly, wherein the battery management circuit board is provided with a first connecting terminal, which first connecting terminal is electrically connected to an internal circuit of the battery management circuit board; and the electrical connection assembly comprises a bearing member and a conductive component, the conductive component being connected to the bearing member, and the conductive component comprising a conductive part, a second connecting terminal, and a third connecting terminal. The second connecting terminal is connected to the third connecting terminal by means of the conductive part, the second connecting terminal is connected to the first connecting terminal, and the third connecting terminal is connected to a busbar or a relay inside the electric control device. The present application is aimed at replacing the connection mode of a wire harness, so as to simplify the structure and improve the integration level.
Absstract of: EP4725634A1
0001 An ultrasonic welding head (10). The ultrasonic welding head comprises a welding head main body (1) and first welding teeth (2); the welding head main body is provided with a welding surface (1a), the first welding teeth protruding from the welding surface; the first welding teeth comprises a plurality of tooth parts (20), the plurality of tooth parts respectively being a first tooth part (21) to an m-th tooth part which are successively arranged in the protruding direction of the first welding teeth; the n-th tooth part is arranged on the end surface of the end of the (n-1)th tooth part away from the welding surface, the end surface of the end of the (n-1)th tooth part away from the welding surface exceeding the n-th tooth part, and 2 ≤ n ≤ m. The present application further relates to an ultrasonic welding device, an electrode assembly (30), a battery cell (100), a battery (200), and an electrical device (1000).
Nº publicación: EP4726805A1 15/04/2026
Applicant:
LG CHEMICAL LTD [KR]
Absstract of: EP4726805A1
The present invention relates to a positive electrode material, and a positive electrode and a lithium secondary battery including the same. The positive electrode material includes a first positive electrode active material in the form of a single particle, and a second positive electrode active material having a greater average particle size (D50) than the first positive electrode active material. The first positive electrode active material is a lithium-excess manganese oxide simultaneously including a Li2MnO3 phase and a LiMO2 (where M is an element including at least one selected from Ni, Co and Mn) phase, and the second positive electrode active material is a lithium nickel oxide including 50 mol% or more and less than 80 mol% of nickel with respect to the total moles of metals except for lithium.
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