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NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTRODE USED THEREFOR

Resumen de: EP4794030A1

A nonaqueous electrolyte secondary battery includes a first electrode, a second electrode, a nonaqueous electrolyte, and a separator provided between the first electrode and the second electrode. The first electrode includes a first current collector and a first active material layer supported on the first current collector. The first active material layer contains a first active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200°C or higher and 500°C or lower. The polymer material has a linear structure.

BATTERY PACK

Resumen de: EP4794089A1

0001 A battery pack (100) includes an elastic body (20) on a portion of each of the inner surfaces (12a) of a pair of lid parts (12). The pair of lid parts (12) are secured to the respective end surfaces of a battery block (2) housed in the housing space of a casing body (11). A gap (GP) is formed between each of the pair of lid parts (12) and an edge (11a) of a corresponding open end of the casing body (11). The lid part (12) includes: a lid body (13) that is a flat board; and a wall part (14) projecting from the inner surface of the lid body (13). The elastic body (20) is disposed to abut a surface of the wall part (14) that faces the inner surface of the casing body (44). The elastic body (20) includes an inclined surface (21) flaring out toward the inner surface of the lid part (12). A portion of the inclined surface (21) enters the gap (GP). A corner portion (19) of the casing body (11) that is located between an edge (11a) of the open end of the casing body (11) and the inner surface (11b) of the casing body (44) abuts the inclined surface (21).

METHOD FOR ASSEMBLING AN ELECTRIC BATTERY PACK

Resumen de: WO2025078700A1

The invention relates to a method for assembling an electric battery pack (1), comprising the following steps: - providing a rack (3) that defines a plurality of open recesses (5); - providing at least one set of cells (13) comprising a plurality of electrochemical cells (15) and a plurality of spacers (17) separating the electrochemical cells (15) from one another; and - inserting the at least one set of cells (13) into one of the recesses (5); characterised in that compressible spacers (17) are provided, and in that the at least one set of cells (13) is compressed in order to be able to insert the at least one compressed assembly (13) into one of the recesses (5), so that the at least one compressed assembly (13) remains compressed.

APPARATUS FOR FIRING CATHODE MATERIAL OF SECONDARY BATTERY

Resumen de: EP4793582A1

An apparatus for calcining a positive electrode material of a secondary battery comprises a temperature rising section extending in a first direction of a horizontal direction, a temperature maintaining section connected to the temperature rising section and extending in the first direction, and a cooling section connected to the temperature maintaining section and extending in a second direction different from the first direction in the horizontal direction.

BATTERY PACK, STRUCTURE, AND METHOD FOR MANUFACTURING MICA PLATE

Resumen de: EP4794086A1

0001 Provided is a battery pack including a mica plate that is resistant to damage and is lightweight. The battery pack of the present invention includes a module with a plurality of battery cells; a case containing the module; and a mica plate disposed between the module and the case and having a first main face and a second main face opposite to the first main face, the battery pack further including a fixing member to fix the mica plate, the mica plate having a first fixing member hole penetrating from the first main face to the second main face, at least one of the module or the case having a second fixing member hole, the fixing member including a head and a body extending from the head, the body of the fixing member passing through the first fixing member hole into the second fixing member hole, thereby fixing the mica plate, the head, in a planar perspective view of the mica plate, covering at least a part of an outline of the first fixing member hole and overlapping the mica plate, an overlapping area, denoted as area S1, between the head and the mica plate being not less than 5.8 × 10<-6> times an area S2 of the mica plate.

ENERGY STORAGE ELEMENT

Resumen de: WO2025078530A1

The invention relates to an energy storage element (100) comprising an electrode-separator assembly (104) of strip-shaped electrodes and at least one band-shaped separator, having the sequence anode (105)/separator (156)/cathode (108), which is in the form of a cylindrical winding in which the anode (105), the separator (156) and the cathode (108) are wound around a winding axis A. The anode (105) and the cathode (106) each comprise a current collector (106, 109) with a strip-shaped main region (107, 110) covered with electrode material and a free edge strip (106b, 109b) along a longitudinal edge (106a, 109b) which is not covered with the electrode material. They are arranged inside the electrode-separator assembly (104) such that the free edge strip (106b) of the anode current collector (106) emerges from a first terminal end face (104a) and the free edge strip (109b) of the cathode current collector (109) emerges from a second terminal end face (104b) of the winding. A sheet-metal contact part (112) sits on one of the edge strips (106b, 109b), covers the end face (104a, 104b) from which this edge strip emerges, and is integrally connected to this edge strip. The current collector, on the edge strips (106b, 109b) of which the sheet-metal contact part (112) sits, is arranged in a spiral shape in the cylindrical winding and has an outer turn (181) with a maximum radius R1. The sheet-metal contact part (112) has a maximum radial extension Emax on the end face (104a, 104b) cover

PRODUCTION OF BATTERY CELLS BY MEANS OF ARRESTER EXTENSIONS

Resumen de: WO2025078684A1

The invention relates to a method for producing a battery cell, having at least two battery poles arranged on opposite sides, wherein at least one electrode stack having a multiplicity of anode foils and cathode foils, which are separated from one another by separator foils, is provided, wherein the anode foils have anode arresters at their ends and the cathode foils have cathode arresters at their ends, wherein the anode arresters of the anode foils are bundled at a first side and the cathode arresters of the cathode foils are bundled at a second side of the electrode stack, the bundled anode arresters and/or cathode arresters are connected in an electrically conductive manner at least regionally by means of at least one arrester extension, the at least one electrode stack provided with at least one arrester extension is inserted into a cell housing, the anode arresters are connected directly or indirectly to a collector of a first battery pole in an electrically conductive manner via the at least one arrester extension and the cathode arresters are connected directly or indirectly to a collector of a second battery pole in an electrically conductive manner via the at least one arrester extension, and wherein the cell housing is closed by the first battery pole and the second battery pole. The invention also relates to a battery cell.

A METHOD OF MANUFACTURING POROUS SILICON

Resumen de: CN122003383A

A method of making porous silicon includes providing magnesium silicide with silica nanoparticles and silica microparticles, or by providing magnesium with silica nanoparticles and silica microparticles. Any of the mixtures is then heated to a maximum of 500 DEG C.

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4794026A1

0001 The present application relates to a positive electrode active material and a preparation method therefor, a positive electrode sheet, a secondary battery, and an electric device. The positive electrode active material comprises an active substance; the active substance comprises a lithium nickel manganese oxide; the lithium nickel manganese oxide comprises a spinel phase; in an X-ray diffraction analysis pattern of the lithium nickel manganese oxide, there is a first diffraction peak at a diffraction angle 2θ of 18° to 19° and a second diffraction peak at a diffraction angle 20 of 44° to 45°; the first diffraction peak corresponds to a crystal face (111), and the second diffraction peak corresponds to a crystal face (400); the peak intensity of the first diffraction peak is I<(111)>, the peak intensity of the second diffraction peak is I<(400)>, and I<(111)> and I<(400)> satisfy: 2.5 ≤ I<(111)>/I<(400)> ≤ 4.0; and the lithium nickel manganese oxide satisfies the chemical formula LiMNiMn<2-y-z>O<4-k>, wherein 0.8 ≤ x ≤ 1.05, 0 ≤ y ≤ 0.2, 0.3 ≤ z ≤ 0.7, -0.1 ≤ k ≤ 0.5, and M comprises one or more of B, Si, P, S, Nb, Mo, Ru, Te, Ce, Ta, and W.

ELECTRODE SHEET, SECONDARY BATTERY, ELECTRIC DEVICE, PREPARATION METHOD, AND REUSE METHOD

Resumen de: EP4794002A1

An electrode sheet, a secondary battery, an electric device, a preparation method, and a reuse method. The electrode sheet comprises a current collector and multiple active material layers located on at least one side of the current collector; the multiple active material layers comprise a first active material layer and a second active material layer, wherein the second active material layer is the active material layer farthest from the current collector, and the first active material layer is located between the second active material layer and the current collector, and comprises current collector particles.

BUSBAR, BATTERY PACK, AND VEHICLE

Resumen de: EP4794108A1

0001 A vehicle (1) having a battery pack (10), the battery pack (10) having a busbar (200). The busbar (200) comprises: a non-conductive sealing pressing plate (2003), a first connecting component (2001), and a second connecting component (2002). The first connecting component (2001) is disposed at a first end of the non-conductive sealing pressing plate (2003), and the second connecting component (2002) is disposed at a second end of the non-conductive sealing pressing plate (2003), the first connecting component (2001) being electrically connected to the second connecting component (2002).

SECONDARY BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4794049A1

0001 This application discloses a secondary battery and an electronic device. The secondary battery includes a packaging bag, an electrode assembly, a first tab, a first insulation tape, and a second insulation tape. The electrode assembly is accommodated in the packaging bag. The first tab is electrically connected to the electrode assembly and protrudes out of the packaging bag along a first direction. The electrode assembly assumes a jelly-roll structure and includes a first end surface, a first side surface, a first curved surface, and a second side surface. The first side surface, the first curved surface, and the second side surface are disposed around a periphery of the first end surface. The first insulation tape includes a tape body and a first protruding portion. The tape body is bonded to the first side surface, the first curved surface, and the second side surface separately. The first protruding portion exceeds a negative electrode plate of the electrode assembly along the first direction. The first protruding portion includes a first section and a second section. The second insulation tape is bonded to the first end surface, the first section, and the second section separately. In this way, this application can improve the hot box test pass rate of the secondary battery.

BATTERY PACK, AND ESS AND VEHICLE INCLUDING THE BATTERY PACK

Resumen de: EP4794096A1

A battery pack according to an embodiment of the present invention includes a module assembly including a plurality of battery modules each including, on a side, a module opening through which venting gas is discharged, a pack cover facing the module opening and configured to cover the side of the module assembly, and an oxygen introduction preventing member located in a space formed between the module assembly and the pack cover and configured to prevent oxygen from being reversely introduced after venting gas is discharged in an extension direction of the space.

SECONDARY BATTERY AND ELECTROCHEMICAL DEVICE

Resumen de: EP4794064A1

0001 Some embodiments of this application provide a secondary battery and an electrochemical device. The secondary battery includes an electrode assembly and a shell. The shell is configured to accommodate the electrode assembly. The shell includes a first wall and a second wall opposite to each other along a thickness direction of the electrode assembly. The first wall is provided with a first protruding portion that protrudes toward an inside of the shell. The shell further includes a third wall. The third wall connects the first wall and the second wall. The third wall is spaced apart from the electrode assembly along a first direction. The first direction is perpendicular to a thickness direction of the electrode assembly. Along the thickness direction of the electrode assembly, a dimension of an inner surface of the third wall is L<1>, a thickness of the electrode assembly is L<2>, and a height by which the first protruding portion protrudes beyond an inner surface of the first wall is L<3>, satisfying: L<3> > L<1> - L<2>. The technical solutions provided herein can improve the reliability and safety performance of the secondary battery.

CONNECTOR, BATTERY, ELECTRICAL DEVICE, AND ENERGY STORAGE DEVICE

Resumen de: EP4794132A1

0001 Provided in the present application are a connector (400), a battery (100), an electrical device, and an energy storage device. The connector (400) comprises a plug (410) and a protective cover (420), the protective cover (420) being provided with an accommodation cavity (421), an opening portion (422) being formed at the cavity opening of the accommodation cavity (421), and the plug (410) being accommodated in the accommodation cavity (421). When the plug (410) is inserted into a plugging port (31), the opening portion (422) covers a socket (30), such that the plugging port (31) is located inside the accommodation cavity (421). With respect to the connector (400) provided in the embodiments of the present application, the protective cover (420) can cover the plug (410) to achieve the purposes of dustproofing and waterproofing, and moreover, the opening portion (422) of the protective cover (420) can cover the socket (30) and provide covering protection for the plugging port (31) of the socket (30), thereby effectively reducing the probability of water seepage at the plugging port (31), and further improving the reliability of the connector (400) and the plugging port (31).

BATTERY, BATTERY PACK AND ENERGY STORAGE SYSTEM

Resumen de: EP4794110A1

0001 This application provides a battery, a battery pack, and an energy storage system. The battery includes a housing, an electrode assembly, a Mylar film, an insulating porous film, and a bottom tray. The electrode assembly, the Mylar film, the insulating porous film, and the bottom tray are all accommodated in the housing. A bottom surface of the electrode assembly, the Mylar film, the insulating porous film, and the bottom tray are sequentially stacked, and the insulating porous film on the bottom surface includes a plurality of through holes. The through hole of the insulating porous film can reduce flow of dust that falls off from the electrode assembly between the electrode assembly and the housing, and reduce a possibility that a micro short circuit is formed between the bottom surface of the electrode assembly and the housing.

BATTERY PACK HAVING MULTIPLE CONTACT POINTS AT POSITIVE AND NEGATIVE TERMINALS

Resumen de: EP4794090A1

The present application relates to the technical field of new energy batteries, and in particular to a battery pack with multiple contact points for positive and negative terminals, which includes a battery pack housing, chutes are defined on two side walls of the battery pack housing, battery-side contact elements are located in the chutes, ribs for insertion into the chutes are arranged on a device housing of a charging and discharging device, and tool-side contact elements for cooperating with the battery-side contact elements are arranged on the ribs.

ELECTROLYTE INJECTION SYSTEM AND ELECTROLYTE INJECTION METHOD

Resumen de: EP4794113A1

0001 An electrolyte injection system (100) and an electrolyte injection method. The electrolyte injection system (100) comprises an electrolyte injection device (110), an upper computer (120) and a control device (130), wherein the electrolyte injection device (110) comprises at least one electrolyte injection pump (111); the control device (130) is configured to send to the upper computer (120) pump information of a target electrolyte injection pump (111a) currently to be subjected to electrolyte preparation in the electrolyte injection device (110); the upper computer (120) is configured to: acquire pump information from the control device (130), determine, on the basis of the pump information and from among bearing positions of a battery cell tray currently entering the electrolyte injection device (110), a target bearing position currently corresponding to the target electrolyte injection pump (111a), determine, on the basis of a first correlation, a target electrolyte injection parameter corresponding to the target bearing position, with the first correlation comprising electrolyte injection parameters respectively corresponding to at least one bearing position, and issue the target electrolyte injection parameter to the target electrolyte injection pump (111a); and the target electrolyte injection pump (111a) is configured to perform electrolyte preparation according to the target electrolyte injection parameter, and after electrolyte preparation, perform electrolyte

CYLINDRICAL BATTERY AND ELECTRONIC DEVICE

Resumen de: EP4794050A1

0001 This application discloses a cylindrical battery and an electronic device. The cylindrical battery includes a housing and an electrode assembly. The electrode assembly is disposed in the housing. The electrode assembly includes a first electrode plate. The first electrode plate includes a first blank foil portion. The first blank foil portion is formed of a first part and a second part. The first part extends along a winding direction of the electrode assembly. The second part is formed by bending the first blank foil portion toward such a direction that a terminating end of the first electrode plate is closer to a first end wall. The second part is connected to the first part and the first end wall of the housing. A region of connection between the second part and the first end wall is a first region. A first edge is formed at a junction between the first part and the second part. The first part includes a second edge and a third edge. The first edge intersects the third edge to form a first fold point. A minimum distance between the first end wall and the second end wall is H, an inner radius of a circumferential wall of the housing is R, and a minimum distance from the first fold point to the first region is L<1>, satisfying H + R ≤ L<1>. By providing the second part, this application improves the lifespan of the cylindrical battery.

BATTERY CELL, BATTERY, ELECTRIC DEVICE, AND ENERGY STORAGE APPARATUS

Resumen de: EP4794072A1

0001 A battery cell (20), a battery (100), an electric device, and an energy storage apparatus. The battery cell (20) comprises a casing (21). The casing (21) comprises a shell (211) and an end cover (212). An opening (211a) is formed in the shell (211). The shell (211) comprises a first wall (24). The first wall (24) comprises a first opening part (241) and a first body part (242) sequentially arranged in a first direction (Z). The first direction (Z) is parallel to the thickness direction of the end cover (212). The first opening part (241) is close to an opening (211a) with respect to the first body part (242). The end cover (212) is welded to the first opening part (241) to seal the opening (211a). The first opening part (241) comprises a plurality of first thickening areas (241a) and at least one first transition area (241b). The plurality of first thickening areas (241a) are arranged at intervals in a circumferential direction of the opening (211a). Two adjacent first thickening areas (241a) are connected by means of the first transition area (241b). The maximum thickness of the first thickening areas (241a) is greater than the thickness of the first body part (242), and the maximum thickness of the first thickening areas (241a) is greater than the thickness of the first transition area (241b). The present application can improve the reliability of the battery cell (20).

BATTERY, ELECTRIC DEVICE AND ENERGY STORAGE DEVICE

Resumen de: EP4794102A1

0001 A battery (10), an electric device and an energy storage device. The battery (10) comprises: a battery cell (20); a busbar component (12), wherein the busbar component (12) is used for electrically connect to an electrode terminal (214) of the battery cell (20); and an insulating component (13), the insulating component (13) comprising a main body portion (131) and an extending portion (132) that are connected to each other, wherein the main body portion (131) is attached to the surface of the busbar component (12) that is away from the battery cell (20), and the extending portion (132) is located at an end of the busbar component (12) that is close to the battery cell (20). The extending portion (132) is closer to a first surface relative to the main body portion (131), wherein the first surface is the surface of the battery cell (20) that is close to the electrode terminal (214). In this way, when thermal runaway occurs in the battery cell (20), the configuration of the insulating component (13) can reduce the impact of high-temperature gas and conductive particles which are released by the battery cell (20) on the busbar component (12), thereby reducing the influence on the performance of the busbar component (12), such that the usage performance of the battery (10) is improved.

ACCUMULATOR COVER FOR AN ACCUMULATOR, AN ACCUMULATOR EQUIPPED THEREWITH AND A METHOD FOR PRODUCING THE ACCUMULATOR COVER

Resumen de: WO2025076568A2

The invention relates to an accumulator cover (3) for an accumulator (1). The accumulator cover (3) comprises: - a cover plate (9) with an outer side (11) and an inner side (13) and a through-opening (16) that penetrates the cover plate (9) between the outer side (11) and the inner side (13); - a rivet (17) that projects through the through-opening (16) of the cover plate (9); - a pole plate (18), wherein the pole plate (18) is arranged on the outer side (11) of the cover plate (9) and is electrically conductively coupled to the rivet (17); - a separating plate (19), wherein the separating plate (19) is arranged on the outer side (11) of the cover plate (9) between the pole plate (18) and the cover plate (9). A current collector (20) is designed as a component independent of the rivet (17), wherein the current collector (20) is electrically conductively coupled to the rivet (17).

SEPARATOR, ELECTROCHEMICAL APPARATUS WITH SEPARATOR AND ELECTRICAL APPARATUS

Resumen de: EP4794046A1

0001 A separator includes a base film and an organic coating disposed on at least one surface of the base film. In a 10µm×5µm region of the organic coating, based on a mass of the organic coating, a mass percentage of a carbon element in the organic coating is W1, a mass percentage of a fluorine element in the organic coating is W2, and 0.45 ≤ W1/W2 ≤ 6. The separator further includes an inorganic coating, the inorganic coating is disposed between the base film and the organic coating, the inorganic coating has a thickness of d3, the base film has a maximum pore size of r1, and 0.01 ≤ r1/d3 ≤ 0.21.

SECONDARY BATTERY AND ELECTRIC APPARATUS

Resumen de: EP4794048A1

0001 The present application provides a secondary battery and an electric apparatus, the secondary battery including an electrode assembly, and the electrode assembly being a jelly-roll structure, where the electrode assembly includes a positive electrode plate, a negative electrode plate, a first separator, and a second separator; the first separator includes a first base film and a first ceramic coating, the first ceramic coating being disposed on at least one side of the first base film, the first ceramic coating including first ceramic particles, and the first ceramic particles including at least one of aluminum oxide, zirconium dioxide, titanium dioxide, or silicon dioxide; and the second separator includes a second base film and a second ceramic coating, the second ceramic coating being disposed on at least one side of the second base film, the second ceramic coating including second ceramic particles, and the second ceramic particles including boehmite. Through the above disposition, the secondary battery can balance energy density, cycling performance, and safety performance.

IMMERSION-COOLED BATTERY MODULE, AND BATTERY PACK AND VEHICLE INCLUDING SAME

Nº publicación: EP4794109A2 19/08/2026

Solicitante:

LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd.

Resumen de: EP4794109A2

0001 An immersion cooled battery module according to an embodiment of the present disclosure includes a plurality of sub battery modules; a module case having an opening in at least one end, and accommodating the plurality of sub battery modules and a cooling liquid in an internal space connected to the opening; a sealing cover air-tightly covering the opening; a plurality of circuit boards corresponding to the plurality of sub battery modules, received in the internal space and configured to sense electrical signals related to the plurality of sub battery modules; and a waterproof connector coupled to the sealing cover, and configured to transmit the electrical signals respectively sensed by the plurality of circuit boards to an external device outside of the module case.