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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.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: EP4793995A1

0001 The present disclosure relates to a secondary battery and an electrical device. The secondary battery satisfies a relationship as follows: 0.3 ≤ A/100×(N+100P) ≤ 25; where A, in ppm, represents a mass content of the Al element in the positive electrode active material; P, in %, represents a weight percentage of the pyridine-based additive in the electrolyte; and N, in %, represents a weight percentage of the nitrile-based additive in the electrolyte. By correlating and defining the relationship between the key additives in the electrolyte and the Al content in the positive electrode active material, the present disclosure can effectively enhance the complexation between the nitrile-based and pyridine-based additives in the electrolyte and the positive electrode active material, thereby improving the film-forming stability of the battery during charging, and thus significantly enhancing the high-temperature stability of the battery.

LITHIUM FERRITE PRE-LITHIATION ADDITIVE, POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE SHEET, AND SECONDARY BATTERY

Resumen de: EP4794032A1

0001 The present application relates to the technical field of secondary batteries. Provided are a lithium ferrite lithium supplement, a cathode material, a cathode plate, and a secondary battery. The lithium ferrite lithium supplement of the present disclosure includes a nuclear layer and a shell layer covering a surface of the nuclear layer. A material of the nuclear layer includes Li<5>FeO<4>, and a material of the shell layer includes a carbon material. I/I of the lithium ferrite lithium supplement is 1.0-1.2, and an average thickness of the shell layer is 60 nm-200 nm. In the present disclosure, by forming a carbon layer on the surface of the nuclear layer containing the Li<5>FeO<4>, the I/I is controlled, and the average thickness of the shell layer is controlled, such that the air stability of the lithium ferrite lithium supplement may be effectively improved.

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET, AND SECONDARY BATTERY

Resumen de: EP4794027A1

The present application provides a cathode material, a manufacturing method thereof, a cathode plate, a secondary battery, and an electric device, which belongs to the technical field of battery cathode materials. The cathode material includes a carbon layer and a plurality of sodium vanadium fluorophosphate particles distributed in the carbon layer. The sodium vanadium fluorophosphate particles are coated by the carbon layer. The carbon layer has a porous network structure and a thickness of 3 nm to 6 nm. A porosity of the cathode material is 10% to 35%. The manufacturing method adopts a microwave-assisted hydrothermal treatment and a sol-gel technology to obtain a gel slurry, which is dried and then calcined to obtain the above cathode material. The cathode material of the present application improves the wettability in an electrolyte and the electron and sodium ion transport efficiency, which improves the charging and discharging efficiencies and the electrochemical performance of the secondary battery.

BATTERY PACK HAVING CUT-OFF PROTECTION FUNCTION, AND ENERGY STORAGE SYSTEM

Resumen de: EP4794052A1

This application provides a battery pack with a breaking protection function and an energy storage system. The battery pack includes a battery module including a plurality of single cells, a breaking device connected in series to the battery module, a current sensor, and a controller. A first end of the current sensor is connected to a positive output end of the battery pack, and a second end of the current sensor is connected to a negative output end of the battery pack, to detect a current difference between the positive output end and the negative output end of the battery pack. The controller is configured to: when the current difference detected by the current sensor is greater than a first threshold, control the breaking device to be turned off, to quickly cut off a fault when the short-circuit to ground fault occurs in the cell in the battery pack, so as to ensure safe operation of the entire energy storage system.

LITHIUM-REPLENISHING AGENT AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE SHEET AND SECONDARY BATTERY

Resumen de: EP4794031A1

The present disclosure provides a lithium supplement and belongs to the technical field of energy storage. The lithium supplement includes: a rich-lithium lithium iron oxide material, and a coating layer coated on a surface of the rich-lithium lithium iron oxide material. A material of the coating layer includes lithium pyrophosphate. The present disclosure is beneficial for solving technical problems such as poor stability in air and poor safety of the rich-lithium cathode materials in related technologies to achieve effectively supplementation.

BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794111A1

0001 A battery (100) and an electric device. The battery (100) comprises: a battery pack (10), comprising a first battery column (11) and a second battery column (12), which are arranged in a first direction (X), wherein the first battery column (11) and the second battery column (12) each comprise a plurality of battery cells (200) sequentially arranged in a second direction (Y), the first direction (X) intersecting the second direction (Y); a busbar assembly (20), comprising a first busbar member (21) and a second busbar member (22), wherein the first busbar member (21) is connected to the battery cells (200) of the first battery column (11), and the second busbar member (22) is connected to the battery cells (200) of the second battery column (12); and a separator (30), wherein in the first direction (X), at least part of the separator (30) is located between the first busbar member (21) and the second busbar member (22). The battery can improve its own reliability, thus reducing the risk of short circuits.

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, 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.

EXPLOSION-PROOF VALVE PATCH, COVER PLATE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794091A1

The embodiments of the present disclosure belong to the technical field of batteries. Provided are an explosion-proof valve patch, a cover plate assembly, a battery cell, a battery and an electric device. The explosion-proof valve patch comprises a patch body; a first rubber ring arranged on a first surface of the patch body and provided with a first gap; and a second rubber ring arranged on the first surface of the patch body, located on an inner side of the first rubber ring, and provided with a second gap, the first gap and the second gap being staggered.

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.

DEVICE FOR CONTACTING BATTERY MODULES

Resumen de: WO2025078086A1

The invention relates to a device for contacting battery modules, comprising two connection parts (2, 3) which can be moved along an insertion direction (1) relative to one another between a disconnection position and a connection position, wherein a first connection part (2) comprises a contact body (4) having an electrical contact face (5) and a second connection part (3) comprises a contact terminal which, in the connection position, is seated against the contact face (5). In order to allow reliable electrical connection regardless of the mechanical load and, at the same time, to require little space, according to the invention the contact terminal is a contact spring (6) which, in the connection position, is resiliently seated against the contact face (5) perpendicularly to the insertion direction (1) and a connection part (3) has a stop face (7) for a positioning body (8) of the other connection part (2), said stop face acting perpendicularly to the insertion direction (1), and the contact face (5) having a greater area than the stop face (7).

CASING, BATTERY AND ELECTRIC DEVICE

Resumen de: EP4794080A1

0001 A casing, a battery and an electric device, which relate to the technical field of batteries. The casing comprises a casing wall (1), load-bearing members (3) and connecting members (4), wherein an accommodating cavity (2) is formed by the casing wall (1) by means of enclosure, and is provided with first connecting holes (111); the first connecting holes (111) penetrate the casing wall (1) in the direction of thickness of the casing wall (1); the load-bearing members (3) are provided in the accommodating cavity (2); the connecting members (4) extend into the accommodating cavity (2) by means of the first connecting holes (111) so as to be detachably connected to the load-bearing members (3) to fix the casing wall (1) and the load-bearing members (3); and a connecting structure is provided on the side of each connecting member (4) facing the outside of the accommodating cavity (2), and is configured to be connected to a target device.

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.

ENERGY STORAGE SYSTEM AND CONTROL METHOD FOR ENERGY STORAGE SYSTEM

Resumen de: EP4794156A1

The present application provides an energy storage system and a control method for the energy storage system, applied to the technical field of energy storage. The energy storage system comprises a plurality of battery clusters and a plurality of control units, and the battery clusters are in one-to-one correspondence with the control units. Each control unit is used for: when a battery parameter is not lower than a first battery parameter, controlling the corresponding battery cluster to discharge at constant current; and when the battery parameter is lower than the first battery parameter, controlling the corresponding battery cluster to charge at constant current, wherein the first battery parameter is a battery parameter when the capacity of the battery cluster reaches a safe capacity lower limit. By controlling the battery clusters meeting conditions in the energy storage system to charge or discharge at the same constant current, the output power or input power of the energy storage system reaches the maximum power that the energy storage system can currently reach.

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 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.

LOWER CASE AND CASE HAVING SAME, BATTERY PACK, AND ELECTRIC DEVICE

Resumen de: EP4794082A1

0001 A lower case (10) and a case (100) having same, a battery pack (1000), and an electric device (10000), The lower case (10) is used for the battery pack (1000), and the lower case (10) comprises: a bottom plate (11) extending in a first direction within a horizontal plane, wherein two side edges of the bottom plate (11) in a second direction within the horizontal plane are provided with first connecting portions, the first connecting portions are used for connecting an upper case (20) of the battery pack (1000), and the first direction intersects with the second direction; and first side plates (12), wherein there are two first side plates (12) respectively arranged at two ends of the bottom plate (11) in the first direction, the first side plates (12) are vertically arranged, and the lower ends of the first side plates (12) are fully welded to the bottom plate (11).

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.

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 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 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.

CONTROL SYSTEM

Nº publicación: EP4793082A1 19/08/2026

Solicitante:

TOYOTA MOTOR CO LTD [JP]
Toyota Jidosha Kabushiki Kaisha

Resumen de: EP4793082A1

A control system includes: a communication device that acquires information indicating the step currently being performed in a vehicle in the manufacturing process of the vehicle; a server that determines the mode of ripple heating control based on the information acquired by the communication device; and a vehicle control unit that performs ripple heating based on the mode determined by the server.