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867
results.
Updated on
27/12/2025 [07:21:00]
Absstract of: EP4668427A1
The present invention relates to a secondary battery including an electrode assembly, an exterior film having an inner space which accommodates the electrode assembly, and an exterior opening which allows the inner space to communicate with outside, and a cover member which covers the exterior opening of the exterior film, wherein the cover member includes a first member which blocks the exterior opening, and a second member which extends from the first member and is coupled to an inner surface of the exterior film.
Absstract of: EP4668363A1
The present invention relates to a positive electrode active material including a lithium transition metal oxide in a form of a single particle, and a positive electrode and a lithium secondary battery which include the same, and to a single particle type positive electrode active material, wherein the lithium transition metal oxide in the form of a single particle includes an outer boundary forming an outline of the particle and an inner boundary formed in the particle, and satisfies that 0 < length of the inner boundary/length of the outer boundary < 0.4.
Absstract of: EP4668362A1
The present invention relates to a positive electrode active material including a lithium transition metal oxide in a form of a single particle, and a positive electrode and a lithium secondary battery which include the same, and to a single particle type positive electrode active material, wherein the lithium transition metal oxide in the form of a single particle includes an outer boundary forming an outline of the particle and an inner boundary formed in the particle, and satisfies that length of the inner boundary/length of the outer boundary ≥ 0.4.
Absstract of: EP4668438A1
A battery box (2), a battery (100), a battery mounting frame (10), a vehicle frame, and an electric apparatus, where the battery box (2) includes: a box body (20); and a first buffer member (21), arranged on an outer wall surface (201) of the box body (20), where the first buffer member (21) has a first buffer surface (211) facing away from the interior of the box body (20), and the first buffer surface (211) is configured as intersecting with both a horizontal plane and a vertical plane perpendicular to the horizontal plane.
Absstract of: EP4668458A1
Disclosed in the present application are a separator, a preparation method for a separator, and an electrochemical device. The separator comprises a bonding layer, and a base film and a gel film which are respectively arranged on two sides of the bonding layer. In the present application, the gel film has relatively good ductility and deformation resistance, is not prone to be being pierced or still completely covers a pierced position after being pierced, such that the separator still plays a role in separating positive and negative electrodes; and the base film has relatively good shape-retaining capability and self-supporting performance. The base film and the gel film are respectively provided on the two sides of the bonding layer, such that the gel film and the base film are bonded into a whole under the bonding action of the bonding layer, and thus when there is an external force acting in the vertical direction of the separator, the separator deforms but is not prone to breaking, thereby delaying the breakage of the separator and improving the stability and safety of a battery.
Absstract of: EP4668534A1
This application discloses a charging method and apparatus, and an electronic device, and belongs to the field of communication technologies. The charging method includes: in a process of detecting, based on a target voltage level sequence, whether a charger supports a first fast charging protocol, when a first signal line of a charging interface of the electronic device is at a high level, configuring the first signal line as a receive signal line in a universal asynchronous receiver/transmitter UART serial port mode, and configuring a second signal line of the charging interface as a transmit signal line in the UART serial port mode; performing, when a first data packet supporting a second fast charging protocol is received from the charger within a first duration, charging according to the second fast charging protocol; and performing charging according to the first fast charging protocol when the first data packet is not received within the first duration.
Absstract of: EP4668366A1
The invention provides a lithium secondary battery capable of self-poisoning, which includes a positive active material, a negative active material, an electrolyte located between the positive active material and the negative active material to allow lithium ions move therebetween, and a poisonous agent, including an initiating-reaction catalyst and a dopant. The dopant has a phosphorus-oxygen bond, a boron-oxygen bond or a sulfur-oxygen bond exposed at the free end, or a phosphorus-oxygen bond, a boron-oxygen bond or a sulfur-oxygen bond that is not exposed at the free end and is shielded by an organic or inorganic group. When the temperature of the lithium secondary battery reaches a first predetermined temperature, the dopant will react with the initiating-reaction catalyst to release at least one phosphorus-oxygen bond, boron-oxygen bond or sulfur-oxygen bond with free radicals or unsaturated bonds. Therefore, the positive active material of the lithium secondary battery will be contaminated to make the lithium secondary battery harmless.
Absstract of: EP4668392A1
The invention provides a lithium secondary battery capable of self-poisoning, which includes a poisonous agent releasing iodine molecules in the lithium secondary battery. The unstable lithium atoms in the lithium secondary battery would be transformed into stable lithium compounds or lithium ions before the temperature of the lithium secondary battery reaches the abnormally high temperature caused by itself. The negative active material of the lithium secondary battery is deactivated to avoid thermal runaway of the lithium secondary battery.
Absstract of: EP4668465A1
A current collecting assembly, an energy storage apparatus, and an electric device. The current collecting assembly comprises a first connecting member and a second connecting member; the first connecting member comprises a first connecting portion, a second connecting portion, and a conducting portion; the conducting portion is provided with at least one first reinforcing rib and at least one second reinforcing rib, the first reinforcing rib protrudes out of a first surface of the conducting portion, and the second reinforcing rib protrudes out of a second surface of the conducting portion; the second connecting portion is mechanically connected to the surface of the second connecting member, and after the second connecting portion rotates, the second connecting member is located on the side of the second connecting portion facing away from the conducting portion.
Absstract of: EP4667543A1
A coating composition for a separator membrane, a composite separator membrane, a battery cell, a battery, and an electrical appliance, the coating composition for a separator membrane comprising: porous phenolic resin microspheres and a binder, the mass ratio of the binder to the porous phenolic resin microspheres being between 1:1 to 1:20. By using the described coating composition, a coating may be prepared on the surface of a base membrane to obtain a composite separator membrane, which may effectively reduce the thermal shrinkage rate of the base membrane and improve the safety of a battery cell. In addition, since no significant impact is made on the gas permeability of the base membrane, the composite separator membrane obtained thereby exhibits excellent ionic conductivity. Therefore, the battery cell may have a high capacity retention rate while ensuring good safety performance.
Absstract of: EP4668401A1
The present application discloses an electrolyte for a lithium secondary battery, a secondary battery, and an electric device. The electrolyte for a lithium secondary battery includes a sulfate ester and difluorophosphate ions, a molar ratio of the sulfate ester to the difluorophosphate ions is (0.2 to 30):1, and a molar concentration of the sulfate ester is 0.04 mol/L to 0.16 mol/L.
Absstract of: EP4668359A1
The present application provides a sodium-doped lithium-rich metal oxide material and a preparation method thereof, a positive electrode material, a positive electrode plate, a battery, and an electric apparatus. The sodium-doped lithium-rich metal oxide material includes a compound Li<sub>m-x</sub>Na<sub>x</sub>MO<sub>y</sub>. The sodium-doped lithium-rich metal oxide material of the present application facilitates reducing the resistance to lithium-ion extraction from the crystal lattice, thereby increasing the charging capacity of the battery.
Absstract of: EP4668413A1
A battery pack includes enclosure plates (1), a liquid cooling plate (2) and battery cells (3). The battery cells (3) are mounted on the liquid cooling plate (1), the enclosure plates (1) surround the liquid cooling plate (2) and the battery cells (3), and the liquid cooling plate (2) is connected to the enclosure plates (1); an accommodating cavity (4) is provided between the enclosure plates (1) and the battery cells (3); the liquid cooling plate (2) is connected with an outlet pipe (20) and an inlet pipe (21), and the outlet pipe (20) and the inlet pipe (21) are both located in the accommodating cavity (4); a top surface and a bottom surface of an enclosure plate (1) are each provided with a connecting component.
Absstract of: EP4668447A1
A ventilation device and a battery package including the same are disclosed. The ventilation device according to the present invention includes: a deflector covering the through-hole part in a flowing direction to change a direction of travel of the exhaust gas; a cooling plate provided with a through-hole part where the exhaust gas to pass through and dissipating heat of the exhaust gas; and a ventilation filter installed at the through-hole part of the cooling plate to filter the exhaust gas deflected by the deflector;
Absstract of: EP4668402A1
The present disclosure relates to the technical field of batteries, in particlular to an eclectroyte and a battery comprising the electrolyte. The electrolyte comprises a first additive having a structure as represented by formula (I) and a second additive having a structure represented by formula (II), where R<sub>1</sub>, R<sub>2</sub>, and R<sub>3</sub> are each independently selected from formula (a), formula (b), formula (c), and formula (d); R<sub>4</sub>, R<sub>5</sub>, and R<sub>6</sub> are each independently selected from C1-C10 alkyl, C2-C10 alkenyl, and C1-C10 alkoxy; X is selected from hydrogen, halogen, C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C1-C4 cyano; and n is 1, 2, 3, or 4. A SEI film formed by the electrolyte of the present disclosure can improve the stability and the ionic conductivity of an interface film, and has higher safety. The battery of the present disclosure has higher safety performance and more stable long cycle performance.
Absstract of: EP4668440A1
Disclosed in the present application is a battery case, comprising at least: a fixing base, which is provided with a protrusion or a sealing frame on a top face thereof; at least one battery cell, which is arranged on the fixing base, the protrusion or the sealing frame being provided on a top face and a bottom face of the battery cell, respectively; a sealing member, which is located between a surface on which the protrusion is located and the sealing frame, and is pressed by the surface on which the protrusion is located and the sealing frame; and a switch module, which is arranged on the battery cell, the protrusion or the sealing frame being provided on the surface of the switch module that is in contact with the battery cell, wherein the fixing base and/or the switch module abut against the battery cell by means of the protrusion or the sealing frame. The battery case disclosed in the present application has an improved waterproof sealing performance.
Absstract of: EP4668416A1
Provided in the present application are an energy storage system and a self-heating method therefor. By means of the self-heating method for an energy storage system, when a battery temperature of the energy storage system is lower than a preset allowable operation temperature, an electric energy conversion apparatus is controlled to operate in a reactive operation mode; since a cooling liquid of the energy storage system can realize heat conduction with the electric energy conversion apparatus and a battery pack, heat brought about by the operation of the electric energy conversion apparatus can replace a heating apparatus in the prior art to heat the cooling liquid; the battery pack is then heated by means of the flow of the cooling liquid; and after the battery temperature reaches the preset allowable operation temperature, the electric energy conversion apparatus can be controlled to operate in a normal operation mode. Therefore, by means of the present application, a heating apparatus in the prior art can be omitted, thereby saving on costs; and a heating time can be shortened, thereby improving efficiency.
Absstract of: EP4667402A1
Disclosed is a slitting apparatus, comprising an unwinding device, a first slitting device, a first conveying device, a second slitting device and a plurality of winding devices. The unwinding device is configured for outputting a pole piece material strip; the first slitting device is configured for receiving the pole piece material strip output by the unwinding device and slitting a foil area of the pole piece material strip to form a plurality of sub-material strips; the first conveying device is configured for receiving the plurality of sub-material strips and outputting them after arranging them spaced apart from each other and laid flat; the second slitting device is configured for receiving the plurality of sub-material strips which are arranged spaced apart from each other and laid flat, and slitting coating areas of the sub-material strips to form a plurality of pole pieces; and the plurality of winding devices are connected to the second slitting device, and are configured for winding the plurality of pole pieces. The slitting apparatus of the present disclosure disclose needs fewer tools, lower equipment cost, a smaller equipment, and a smaller footprint.
Absstract of: EP4667862A1
A heat exchange plate includes a first side plate (1) and a second side plate (2) arranged opposite to the first side plate. The first side plate (1) is of an aluminum structure or an aluminum alloy structure. A groove (3) for forming a heat exchange channel (7) is formed in one side of the second side plate (2) facing the first side plate (1). The second side plate (2) includes a main body layer (21) and a protective layer (22) located between the main body layer (21) and the first side plate (1). A thickness of the second side plate (2) located in an area outside the groove (3) is g mm, a depth of the groove (3) is d mm, and a thickness of the protective layer (22) located in the area outside the groove (3) is x mm, x×0.01×(1-(4.55d-5.36)) > λ×g, and λ is equal to 10%.
Absstract of: EP4668426A1
A cover plate assembly includes a cover plate body (1), a pole (2) and a fixing structure (3), wherein the pole (2) is provided on the cover plate body (1); and the fixing structure (3) is fixed on the cover plate body (1), the fixing structure (3) includes a plurality of hems (31), the plurality of hems (31) are provided at intervals around one same pole (2), and the hems (31) are used for fixing the pole (2), wherein each of the hems (31) includes an outer edge (313) remote from the pole (2), a maximum distance between the outer edges (313) of different hems (31) is D, and a maximum width of the cover plate body (1) is L, wherein D/L is 1-2.
Absstract of: EP4668531A1
Embodiments of this application provide a battery and a power consumption system. After the battery is connected to a load, to make full use of an available capacity of a cell group, a processor in the battery may determine an open-circuit voltage of the cell group or a state of capacity of the cell group. A DC-DC conversion circuit supplies power to the load in a first discharge mode or a second discharge mode based on the determined open-circuit voltage of the cell group or the determined state of capacity of the cell group. The first discharge mode is supplying power to the load based on a discharge curve of the cell group, the second discharge mode is supplying power to the load based on a first specified voltage, and the first specified voltage is within a working voltage range of the load.
Absstract of: EP4668442A1
The invention provides a battery box capable of being stacked layer by layer and a battery system. The battery box is configured as a box structure. Threaded holes are circumferentially formed in an upper portion of the battery box, and unthreaded screw mounting holes corresponding to the threaded holes are formed in a lower portion of the battery box. Screw fasteners penetrate through the unthreaded screw mounting holes of an upper battery box and the threaded holes of a lower battery box to fixedly connect the upper battery box and the lower battery box. A battery frame is eliminated, and the upper battery box is directly stacked on the lower battery box, such that the space utilization of battery boxes in the battery system is greatly increased, and a vehicle can be loaded with more batteries under the same volume; by adopting this technical solution, the cooling system can also exert a benefit effect on the tops of batteries, thus improving heat management efficiency; in addition, the technical solution facilitates connection of wires and water lines between the battery boxes.
Absstract of: EP4668380A1
The present disclosure provides an electrode assembly comprising:a laminate body including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, and one or more pairs of tapes for fixing the exterior of the laminate body,wherein the pair of tapes includes non-overlapping portions that do not overlap with each other, and overlapping portions that overlap with each other, andwherein a width of the non-overlapping portions is larger than a width of the overlapping portions, and a secondary battery comprising the same.
Absstract of: EP4668455A1
A battery separator and a preparation method therefor, and a secondary battery and an electric device, which relate to the field of batteries. The battery separator comprises a base film 10 and a coating 20, wherein the coating 20 is arranged on a surface of the base film 10 on the side that faces a cathode of a battery, and the materials of the coating 20 comprise a conductive material and an insulating material. When the battery separator which is obtained by arranging the coating 20 on the surface of the base film 10 on the side that faces the cathode of the battery is applied to a lithium battery, and when lithium dendrites grow to completely penetrate the side of the base film 10 which is not provided with the coating 20, the lithium dendrites are intercepted by the arranged coating 20, and do not come into direct contact with the cathode; moreover, a low-current micro-short circuit is formed by the coating 20, thereby extending the time from a short circuit to a serious accident occurring.
Nº publicación: EP4668464A1 24/12/2025
Applicant:
EVE ENERGY CO LTD [CN]
Eve Energy Co., Ltd
Absstract of: EP4668464A1
A busbar assembly, a cylindrical power battery module, and a battery pack are provided. The busbar assembly includes: an input bar connected to a battery cell at an input end of a cylindrical power battery module; an output bar connected to a battery cell at an output end of the cylindrical power battery module; current conduction bars arranged between the input bar and the output bar and configured to work in conjunction with the input bar and the output bar to connect in series in a first direction two adjacent battery cells arranged in the first direction and connect in parallel in a second direction two adjacent battery cells arranged in the second direction; and a wiring harness member, where an input end thereof is connected to at least one of the input bar, the output bar, the current conduction bars, and multiple battery cells
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