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SEMI-FINISHED PRODUCT FOR FORMING A HOUSING ELEMENT OF A CELL UNIT

Resumen de: EP4794068A1

0001 Halbzeug zum Ausbilden eines Gehäuseelements (100) einer Zelleinheit (200), aufweisend: ein Grundelement (12) und ein erstes Seitenelement (14), ein zweites Seitenelement (16), und ein drittes Seitenelement (18), wobei das erste Seitenelement (14) und das zweite Seitenelement (16) am Grundelement (12) an einander gegenüberliegenden Seiten angeordnet sind, und das dritte Seitenelement (18) am zweiten Seitenelement (16) an einer zum Grundelement (12) gegenüberliegenden Seite angeordnet ist, wobei das Grundelement (12), das erste Seitenelement (14), das zweite Seitenelement (16) und das dritte Seitenelement (18) in einer Ebene (23) angeordnet sind und wobei das Grundelement (12), das erste Seitenelement (14), das zweite Seitenelement (16) und das dritte Seitenelement (18) eingerichtet sind, einen umfänglich geschlossenen, fluiddichten Hauptkörper zu bilden, in welchem ein Zellelement (302) der Zelleinheit anordenbar ist.

RECHARGEABLE BATTERY AND METHOD OF MANUFACTURING THE SAME

Resumen de: EP4794067A1

0001 A rechargeable battery includes an electrode assembly including a positive electrode, a negative electrode, and a separator, a case accommodating the electrode assembly therein, a linear welding portion extending across a first surface among a plurality of surfaces of the case along a first direction, the linear welding portion having two sides, and a protruding extension on at least one of the two sides of the linear welding portion along a second direction crossing the first direction, the protruding extension protruding from the first surface and extending along the first direction.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794078A1

0001 Disclosed are a battery and an electric device. The battery comprises a case; battery cell rows, each comprising a plurality of battery cells arranged in a first direction, wherein the plurality of battery cell rows are stacked in a second direction to form a battery cell array and are placed in the case; and a thermal management part disposed on the sides of the plurality of battery cells in a third direction for heat exchange with the battery cells, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794077A1

Disclosed in the present invention are a battery and an electric device. The battery comprises: a case; battery cell rows each comprising a plurality of battery cells arranged in a first direction, wherein the plurality of battery cell rows are stacked in a second direction to form a battery cell array and placed in the case; and an elongated component, wherein at least one elongated component is provided on the surface of the side of the battery cell rows facing away from a bottom plate of the case in a third direction, the elongated component extends in the first direction and is connected to at least one battery cell in the battery cell rows, and the first direction is perpendicular to both the second direction and the third direction.

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.

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.

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).

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.

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).

INTUMESCENT COATINGS

Resumen de: EP4793325A2

Intumescent coating compositions comprising TiO₂ in an amount of 5-20 wt %, a phosphate source in an amount of 20-55 wt %, based on total solid weight and a borate source, aluminum source and/or silica source, are disclosed, as are methods for using such compositions and substrates coated with same.

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 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 MANAGEMENT SYSTEM AND MANAGEMENT METHOD

Resumen de: EP4794282A2

0001 The present invention relates to battery system comprising a switching unit (14) configured to control a current flow for a battery; a battery pack (1) including a group of battery cells being monitored by a lower-level battery management system; an upper-level battery management system (100) for the battery pack; wherein the lower-level battery management system monitors a battery status by sensing temperature, voltage, or current of a battery module or cell and transmit monitored information to the upper-level battery management system; wherein the upper-level battery management system receives battery status information and transmit information to an upper-level control unit or transmit information obtained by determining a battery status based on the received information to the upper-level control unit; a channel change unit configured to handle wireless communication channels between the lower-level and the upper-level battery management systems; wherein, for maintaining continuity of communications through wireless communication channels, the channel change unit periodically changes wireless communication channels to perform communications through a second communication channel for a preset time period which is different from a first communication channel; a communication interface performs communications with the outside of the battery system; and a memory in which programs relating to battery management process are recorded.

BATTERY ASSEMBLY AND ELECTRICAL APPARATUS

Resumen de: EP4794083A1

0001 The present application relates to the technical field of batteries, and in particular to a battery assembly and an electrical apparatus. The battery assembly includes: a battery, including a top surface, a bottom surface, and side surfaces; and a separation structure wrapped around an outer side of the battery, the separation structure including a first conductive layer and an insulating separation layer. The first conductive layer covers at least part of the bottom surface of the battery and at least part of the side surfaces of the battery. The insulating separation layer includes a separation main body portion and a pulling portion connected to the separation main body portion. A tear guide structure is provided between the separation main body portion and the pulling portion, the separation main body portion covers the first conductive layer and is connected to the first conductive layer, and the pulling portion is bonded to the top surface of the battery. The pulling portion is configured such that, when a pulling force is applied to the pulling portion, the pulling portion is separated from the top surface of the battery, and the first conductive layer on the side surfaces of the battery is exposed at the battery. At least part of the insulating separation layer is formed of a conductive release adhesive. The technical solution provided in the present application can effectively solve the problem in the related art of the battery being difficult to remove from

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

BATTERY MODULE COMPRISING COOLING MEMBER AND BATTERY PACK AND POWER STORAGE DEVICE

Resumen de: EP4794103A2

0001 Disclosed is a battery module that reduces the risk of secondary ignition or explosion and increases durability against external impacts. The battery module includes a plurality of secondary batteries respectively having a gas venting portion for discharging a gas generated therein to the outside at a predetermined pressure and arranged in a front and rear direction in two rows; and a cooling member including a body portion interposed between two rows of the plurality of secondary batteries and having a size corresponding to left and right sides of the plurality of secondary batteries, and a gas discharge portion provided to at least one of an upper portion and a lower portion of the body portion and having a gas discharge passage elongated from a front end to a rear end of the body portion.

SYSTEM AND METHOD FOR INDIVIDUAL CHARGING CELLS OF A BATTERY

Resumen de: EP4794169A2

A method for maintaining a power source (60) can include selecting, by a controller module (90), a rechargeable power storage device (62) from a set of power storage devices (62) arranged to selectively provide a summated output of the power source (60), and selectively enabling, by the controller module (90), the selected power storage device (62) to discharge its stored power at the output of the power source (60). The controller module (90) can compare a sensed voltage of the selected power storage device (62) with a minimum voltage threshold.

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.

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

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.

HEAT DISSIPATION SYSTEM AND ENERGY STORAGE SYSTEM

Nº publicación: EP4794462A1 19/08/2026

Solicitante:

HUAWEI DIGITAL POWER TECH CO LTD [CN]
Huawei Digital Power Technologies Co., Ltd.

Resumen de: EP4794462A1

0001 This application provides a heat dissipation system and an energy storage system. The heat dissipation system includes a container body and a heat management module, where the heat management module is disposed in the container body. A partition plate in the container body separates the container body into a temperature control chamber and a control chamber. The temperature control chamber is located above the control chamber. The heat management module includes at least two compressors, at least two water pumps, a plate heat exchanger component, and an electric control box that are located in the control chamber. The compressors and the electric control box are sequentially disposed in a width direction, the plate heat exchanger component and the water pumps are sequentially disposed in the width direction, and the electric control box and the water pumps are disposed sequentially in a length direction. The compressors and the water pumps are separately connected to the plate heat exchanger component, and the compressors and the water pumps are separately connected to the electric control box. The heat management module further includes a liquid cooling unit located in the temperature control chamber, and the plate heat exchanger component and the electric control box are separately connected to the liquid cooling unit. The heat dissipation system in this application can implement water-electricity isolation and a multi-heat management system, so that heat management