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1039
results.
Updated on
17/07/2026 [07:34:00]
Results 900 to 925 of 1039
Absstract of: EP4773220A1
Provided is a dispersant composition for an electrochemical device with which it is possible to form an electrode for an electrochemical device that can reduce IV resistance of an electrochemical device. The dispersant composition for an electrochemical device contains a polymer A that includes a nitrile group-containing monomer unit and an alkylene structural unit having a carbon number of 4 or more. When the weight-average molecular weight of the polymer A is taken to be MA and the viscosity measured at a temperature of 25°C for a polymer solution obtained by adding N-methyl-2-pyrrolidone to the polymer A such that the concentration of the polymer A is 10 mass% is taken to be ηA (mPa·s), a value FA calculated by FA = (ηA/MA) × 1,000 is not less than 0.1 and not more than 9.0. When the transverse relaxation time measured at a temperature of 25°C for N-methyl-2-pyrrolidone is taken to be T2S (ms) and the transverse relaxation time measured at a temperature of 25°C for a polymer solution obtained by adding N-methyl-2-pyrrolidone to the polymer A such that the concentration of the polymer A is 1 mass% is taken to be T2c (ms), a T2 ratio calculated by T2 ratio = T2S/T2C is not less than 1.1 and not more than 1.8.
Absstract of: EP4773282A1
0001 This application relates to the technical field of energy storage, and specifically discloses a secondary battery, a secondary battery manufacturing method, and an electrical device. The secondary battery includes an electrode assembly. The electrode assembly includes a first electrode plate, a second electrode plate, a separator, and a filler. The first electrode plate includes a first current collector and a first active material layer. The second electrode plate includes a second current collector and a second active material layer. The separator is disposed between the first active material layer and the second active material layer. The first active material layer is provided with a groove. The groove includes a groove opening and a groove wall. Another side of the separator facing the groove opening corresponds to the second active material layer. The filler includes a filling portion. The filling portion is located in the groove. The filling portion covers at least a part of the groove wall. The filler can separate the separator from lithium dendrites deposited in the groove, and limit the growth of lithium dendrites in the groove toward the separator, thereby hindering the lithium dendrites from piercing the separator.
Absstract of: WO2025046132A1
A liquid circuit (22) for controlling the temperature of a liquid-cooled battery unit (16) of a driving and energy-supplying unit (10) of a vehicle drive (14) is disclosed. The liquid is circulated in the liquid circuit (22), and is fed through the liquid-cooled battery unit (16), by means of a pump (24). In a defined flow section (32) of the liquid circuit (22) there is at least one electrically operated heating element (28), which is provided with flow channels (54), the channel walls of which are formed as flat heating conductors (44). A heating element (28) for forming a flow section (32) for a liquid circuit (32) intended for thermal exchange with a drive battery (16) is also disclosed. The heating element (28) comprises at least one electrical heating conductor (44) and a carrier (46), on which the at least one electrical heating conductor (44) is disposed. The carrier (46) is a carrier layer or carrier film (48), which has been made into a wound and/or multiply folded, and therefore three-dimensional, structure, wherein a flow channel (54) or multiple flow channels (54) for liquid is/are provided between regions of the carrier layer or carrier film (48) that are at a distance from one another in the radial direction.
Absstract of: EP4773219A1
The present application relates to the technical field of batteries, and in particular, to a preparation method for an electrode sheet, an electrode sheet, a battery, and an electric device. The preparation method for an electrode sheet includes: preparing an active layer comprising an active material and a binder on at least one side of a current collector; performing a heating treatment on the active layer to cause a temperature of a surface layer of the active layer to rise to a heating temperature; and performing a thermal insulation treatment on the active layer to cause the surface layer of the active layer to be at a thermal insulation temperature, where each of the heating temperature and the thermal insulation temperature is separately higher than or equal to a melting point or a softening point of the binder and lower than a decomposition temperature of the binder. The electrode sheet prepared by the method of the present application may enable a battery using the electrode sheet to have good cycling performance.
Absstract of: EP4772384A1
0001 A vehicle integrated domain controller architecture (800), a vehicle management system, and a vehicle are disclosed. The vehicle integrated domain controller architecture (800) includes: a low-voltage battery (300), a battery management module (100), a low-voltage power distribution module (200), and a thermal management module (900), where the low-voltage battery is electrically connected to the low-voltage power distribution module; the low-voltage power distribution module is configured with a low-voltage load access terminal (210) configured to connect to a low-voltage load; the thermal management module is configured with a thermal management load access terminal (910) configured to connect to a thermal management load; and the battery management module, and the low-voltage power distribution module, and the thermal management module share the same controller. By integrating in the controller a function of managing the low-voltage battery and a function of managing the thermal management load and the low-voltage load, the control lines are simplified.
Absstract of: EP4773460A1
0001 A power storage system is composed of units (13) each including a storage battery group (30) connected between a high voltage side terminal (28A) and a low voltage side terminal (28B), a first current limiting device (36), a first load switch (41), and a bypass circuit (48). The first current limiting device (36) functions to limit a current flowing between the high voltage side terminal (28A) and the storage battery group (30). The first load switch (41) is connected in series with the storage battery group (30) and the first current limiting device (36). The bypass circuit (48) bypasses between the high voltage side terminal (28A) and the low voltage side terminal (28B). The bypass switch (49) switches the bypass circuit (48) between conductive and non-conductive.
Absstract of: EP4773421A1
0001 To obtain a battery that uses an electrode terminal formed by friction pressure welding while maintaining or improving sealing properties. 0002 A battery 1 includes: a charging/discharging body 100; an exterior body (lid 420) that houses the charging/discharging body and has a through-hole (negative electrode side insertion hole 420b) formed therein; a sealing body (negative electrode side gasket 630) that is provided in the exterior body; and an electrode terminal (negative electrode terminal 320) that is provided in the sealing body. The electrode terminal includes: a first portion (insertion portion 322) that is inserted into the through-hole of the exterior body and is indirectly or directly joined to the charging/discharging body; and a second portion (main body portion 321) that is exposed to the outside of the exterior body, is lower in rigidity than the first portion, and is joined to a bus bar or an electric device. The first portion and the second portion are joined to each other by friction pressure welding. The second portion includes a projecting portion (raised portion 320e or cut molded portion 320f) projecting toward the sealing body while annularly surrounding an outer circumferential surface 322b of the first portion at a joint part with the first portion. The projecting portion is in contact with the sealing body.
Absstract of: EP4773222A1
A coated active material (10) according to the present disclosure includes: a positive electrode active material; and an apatite-containing particle layer (13) coating at least a portion of a surface of a particle of the positive electrode active material, the apatite-containing particle layer (13) including an apatite-containing particle (12). A positive electrode according to the present disclosure includes: a positive electrode current collector; and a positive electrode active material layer supported on the positive electrode current collector, wherein the positive electrode active material layer includes the coated active material (10) according to the present disclosure.
Absstract of: EP4773326A1
0001 A secondary battery and an electronic apparatus are provided. The secondary battery includes a housing made of a metal material, a wound electrode assembly, a first tab, and a first layer. The housing includes a first wall and a first conductive member provided on the first wall. The first tab includes a first extension section, a second extension section, and a third extension section. The first extension section includes a first end connected to a first electrode plate, and the first extension section extends from the first end toward a first side in a thickness direction of the electrode assembly and is inclined with respect to the thickness direction. The second extension section includes a second end connected to the first extension section. Viewed along a third direction, the second extension section extends from the second end toward the first side and is inclined with respect to the thickness direction. The third extension section is electrically connected to the first conductive member and includes a third end connected to the second extension section. A distance between the third end and the first wall is greater than a distance between the second end and the first wall. The first layer is provided on a surface of the second extension section facing the electrode assembly and extends to the first extension section and the third extension section. The reliability can be improved, and the service life can be prolonged.
Absstract of: EP4773357A1
A battery cell, an electronic device, and a battery cell packaging method are provided. The battery cell includes an electrode assembly, a tab, and a packaging pouch. The tab is connected to one side of the electrode assembly along a first direction. The packaging pouch includes a main portion and a sealing portion. The electrode assembly is disposed in the main portion. The main portion includes a top wall as well as a first wall and a second wall that are connected to two sides of the top wall respectively along a second direction. The sealing portion includes a top seal edge and a side seal edge. The tab extends out from the top seal edge. The side seal edge is connected to the first wall. The packaging pouch is formed by folding and hermetically securing a packaging film along the second wall. Along the second direction, a spacing between the electrode assembly and the first wall is W1, and a spacing between the electrode assembly and the second wall is W2, |W1 - W2| ≤ 30 µm. The third direction is a thickness direction of the electrode assembly. The first direction, the second direction, and the third direction are perpendicular to each other. The battery cell can improve safety performance.
Absstract of: EP4772543A1
The present invention provides a hydrogenated nitrile rubber that has excellent dispersibility and stability in a conductive material dispersion when manufacturing electrodes for electrochemical elements, excellent peel strength in the electrode and excellent crack suppression of the active material in the electrode after cycle testing, and excellent output characteristics of the electrochemical element. The hydrogenated nitrile rubber of the present invention contains a nitrile group-containing monomer unit and a conjugated diene monomer unit and/or an alkylene structural unit, has a weight average molecular weight (Mw) in the range of 1,000 to 1,000,000 and an iodine value of 100 mg/100 mg or less, contains a phenol-based antiaging agent, has a calcium (Ca) content of 1 to 2500 ppm, a ruthenium (Ru) content of 0.5 to 50 ppm, a palladium (Pd) content of 200 ppm or less, a magnesium (Mg) content of 50 ppm or less, and a sodium (Na) content of 300 ppm or less.
Absstract of: EP4773415A1
0001 A battery according to the present disclosure includes an electrode assembly including a first electrode and a second electrode wound around a central axis of a winding center hole with a separator interposed between the first electrode and the second electrode; a can housing accommodating the electrode assembly; an electrode terminal electrically connected to the electrode assembly; and a first current collector plate electrically connecting the electrode assembly to the electrode terminal, wherein the first current collector plate is coupled to the electrode terminal by surface-to-surface welding and has at least one communication hole for communication between an inside of the can housing and the winding center hole.
Absstract of: EP4773316A1
0001 An electrode plate assembly, a cylindrical battery, and a battery module are provided. The electrode plate assembly includes a plurality of negative electrode plates, a plurality of positive electrode plates, and a plurality of separators. Each of the negative electrode plates includes a negative electrode coating portion and at least one negative electrode tab. Each of the positive electrode plates includes a positive electrode coating portion and at least one positive electrode tab. The plurality of the negative electrode coating portions, the plurality of the separators, and the plurality of positive electrode coating portions are stacked and alternately arranged.
Absstract of: EP4773330A1
0001 Disclosed are an electrode tab inspection apparatus capable of quickly and accurately determining whether stacked electrode tabs are defective at low cost and an electrode tab inspection method using the same, and more particularly an electrode tab inspection apparatus including a photographing unit configured to photograph the electrode tab through transmission photography, an edge setting unit configured to set an edge for the part of a photograph result of the photographing unit in which the color or brightness changes, and a classification unit configured to classify the edge set by the edge setting unit as being related to stability or not being related to stability and an electrode tab inspection method using the same. The inspection apparatus and method achieve a detection rate of 100% for defects in the electrode tab.
Absstract of: EP4773192A1
0001 An exemplary embodiment of the present invention relates to a method for manufacturing an electrode for a lithium secondary battery, the method including: bringing a transfer stack, in which a base layer and a lithium metal layer are in direct contact with each other, into contact with one surface of an electrode active material layer such that the electrode active material layer and the lithium metal layer face each other; and pressing the electrode active material layer in contact with the transfer stack under a pressure of 6 kgf/cm<2> or less and aging the electrode active material layer, wherein the transfer stack is formed by bringing the lithium metal layer into contact with one surface of the base layer and press-rolling the lithium metal layer, an electrode for a lithium secondary battery manufactured thereby, and a lithium secondary battery including the electrode.
Absstract of: WO2026049714A2
A battery pack for use in a spacecraft is provided. The battery pack includes one or more cells and an enclosure operable to receive the one or more cells therein. The one or more cells have a cathode material that includes lithium, iron, and phosphate. The enclosure is constructed at least partially of aluminum and is operable to provide radiation shielding.
Absstract of: EP4773235A1
Disclosed are a negative electrode active material, and a negative electrode and a secondary battery including the same, and an exemplary embodiment of the present invention provides a negative electrode active material including: a silicon-based active material; and a coating layer provided on the silicon-based active material, wherein the silicon-based active material includes one or more selected from the group consisting of Si, SiOx (0 < x < 2), and Si/C, the coating layer is a negative electrode active material including a metal oxide, a content of the metal oxide is 10 parts by weight or more and 30 parts by weight or less based on 100 parts by weight of the negative electrode active material, and an average thickness of the coating layer is 0.01 µm or more and 5 µm or less.
Absstract of: EP4773245A1
The present invention relates to a positive electrode material powder comprising: a first positive electrode active material comprising a first phosphate: and a second positive electrode active material comprising a second phosphate, wherein the first phosphate is represented by Formula 1, the second phosphate is represented by Formula 2, the first positive electrode active material is contained in a greater amount than the second positive electrode active material, and the second positive electrode active material has an average particle diameter D50 of 1.0 µm or less.
Absstract of: EP4773353A1
0001 Provided in the embodiments of the present application are a battery cell, a battery, an electric apparatus, and an energy storage device. The battery cell comprises a casing and an electrode assembly, wherein the casing comprises a casing body and an end cap, the casing body being provided with an opening and comprising a first wall, the first wall comprising a first opening portion and a first body portion, which are distributed in sequence in a first direction, the first direction being parallel to the thickness direction of the end cap, the first body portion being far away from the opening relative to the first opening portion, and the end cap being connected to the first opening portion and sealing the opening; and the electrode assembly is arranged in the casing body and comprises a negative electrode sheet, the negative electrode sheet comprising a negative electrode active material, the negative electrode active material comprising a silicon-based material, and the maximum thickness of the first opening portion being greater than the thickness of the first body portion. On the basis of the technical solution provided in the embodiments of the present application, the reliability of the battery can be improved.
Absstract of: EP4773409A1
The present application provides an electrode tab structure and a welding tooling. The electrode tab structure includes multiple electrode tab units stacked and pre-welded together, and the electrode tab structure includes a first end face and a second end face arranged opposite to each other. The first end face of the electrode tab structure is configured to be abutted against a welding head, and the second end face of the electrode tab structure is configured to be abutted against a welding platform. A difference between a highest point and a lowest point of a metallographic section of the first end face in a first direction being H1, a difference between a highest point and a lowest point of a metallographic section of the second end face in the first direction being H2, and H1 ≤ H2.
Absstract of: EP4773377A1
0001 The present application provides a battery module box cover and a battery module. The battery module box cover includes: a box cover body, where welding holes are formed in the box cover body, and the welding holes penetrates through the box cover body; electrical connection sheets fixed on a side of the box cover body, where welding spots are arranged on the electrical connection sheets, and the welding spots are exposed through the welding holes; and welding hole sealing covers fixed on another side of the box cover body and configured for sealing the welding holes.
Absstract of: EP4773276A1
The present application provides a coating device and coating method for an electrode assembly. The electrode assembly includes an electrode main body, the electrode main body has a first direction, a second direction and a third direction that are orthogonal to each other, and includes two main surfaces, two end surfaces, and two side surfaces, and the coating device includes a discharge assembly, a cutting assembly and a first coating assembly. The discharge assembly is used to store and release a material strip, which includes a plurality of coating films connected in sequence along a length direction of the material strip, and each coating film includes two main coating areas spaced apart from each other and a connecting area connected between the two main coating areas. The cutting assembly is used to cut a head end coating film located at a head end of the material strip from the material strip. The first coating assembly is used to coat the first of the two end surfaces with the connecting area of the head end coating film, and to coat each of the two main surfaces with corresponding one of the two main coating areas, so as to form an electrode coating body. Through the above manner, the action complexity of a coating process can be simplified.
Absstract of: EP4773348A1
0001 Disclosed is a battery pack. The battery pack includes a first battery module having a first port; a second battery module located at one side of the first battery module and having a second port; and a pipe assembly configured to communicate the first port and the second port, wherein the pipe assembly includes a holder coupled to an outer surface of the first port and having a through hole; a first connector passing through the through hole and inserted into the first port; and a fixing member configured to fix the holder to the first connector.
Absstract of: EP4773411A1
0001 The present disclosure relates to a secondary battery and a battery pack including the same, and the secondary battery according to an aspect of the present disclosure includes an electrode assembly including a plurality of electrodes and a separator stacked on each other; an electrode tab extending from the electrode; a case accommodating the electrode assembly and having a window in an outer surface; and an electrode lead disposed in the case, wherein at least a part of the electrode lead is exposed through the window to conduct electricity from the electrode assembly to outside, and the electrode lead may include a lead portion extending in a stack direction of the plurality of electrodes at one side of the electrode assembly; and a coupling portion extending from the lead portion and to which the electrode tab is coupled.
Nº publicación: EP4773234A1 08/07/2026
Applicant:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd.
Absstract of: EP4773234A1
0001 The present invention relates to a silicon carbon composite, an anode active material comprising same, an anode composition, an anode, a lithium secondary battery, a battery module, and a battery pack, wherein, in a Si<2p> spectrum obtained by XPS analysis, a ratio of the intensity of Si
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