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1263
resultados
Última actualización
26/12/2025 [07:11:00]
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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%.
Resumen de: EP4668379A1
The present invention relates to a method for manufacturing a pouch-type secondary battery, and more specifically, relates to a plasma treatment method capable of improving sealing insulation performance of a pouch, a method for manufacturing a secondary battery, and a manufacturing device thereof. According to one example of the present invention, it is possible to provide a pouch-type secondary battery comprising: an upper pouch case having a metal layer and in which a polypropylene coating layer is formed on the lower surface, wherein the polypropylene coating layer is plasma surface-treated; a lower pouch case having a metal layer and in which a polypropylene coating layer is formed on the upper surface, wherein the polypropylene coating layer is plasma surface-treated; and a battery cell having leads having a metal layer and in which polypropylene coating layers are formed on the upper and lower surfaces, and when the upper pouch case and the lower pouch case are sealed by heat fusion, the upper and lower surfaces of the leads are each heat-fused between the upper pouch case and the lower pouch case, and characterized in that in the pouch sheet, the plasma surface treatment is performed to the sealing region and a temporary adhesion region near the sealing region.
Resumen de: EP4668350A1
A secondary battery. The secondary battery comprises a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer. The negative electrode film layer is provided with a first surface close to the negative electrode current collector and a second surface arranged opposite to the first surface; and the thickness of the negative electrode film layer is denoted as H, a region from the first surface of the negative electrode film layer to a thickness range of 0 3H is denoted as a first region of the negative electrode film layer, and a region from the second surface of the negative electrode film layer to a thickness range of 0.3H is denoted as a second region of the negative electrode film layer. The first region comprises a first active material, the second region comprises a second active material, the first active material comprises a siloxy material, and the second active material comprises a silicon-carbon composite material.
Resumen de: 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.
Resumen de: 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.
Resumen de: EP4668344A1
This application provides a positive electrode active material, a preparation method thereof, and a positive electrode plate, a battery, and an electric apparatus including the same. The positive electrode active material includes a layered transition metal oxide represented by Formula (I), with parameters as defined herein. The positive electrode active material includes a K element, and an amount of the K element decreases from a particle surface to a particle interior of the positive electrode active material. NaxKyMaAbBcOmQn Formula (I)
Resumen de: 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.
Resumen de: EP4668372A1
The composition of the disclosure contains a conductive carbon material (A), an olefin resin (B), and an acrylic water-soluble polymer (C). The acrylic water-soluble polymer (C) has a structural unit derived from a (meth)acrylamide, and a structural unit derived from a vinyl monomer having at least one of a carboxy group or a hydroxy group. A content of the structural unit derived from a (meth)acrylamide is from 35% by mass to 95% by mass with respect to a total amount of the acrylic water-soluble polymer (C). A content of the structural unit derived from a vinyl monomer having at least one of a carboxy group or a hydroxy group is from 5% by mass to 65% by mass with respect to the total amount of the acrylic water-soluble polymer (C).
Resumen de: EP4668460A1
Battery module (10) and battery pack are provided. Battery module (10) includes: body and second conductive sheet (2). Body has first conductive sheet (13) and electrode base. Second conductive sheet (2) has one end connected to first conductive sheet (13) and fixed to electrode base and other end configured to be connected to adjacent battery module (10). Second conductive sheet (2) is provided with first groove (21), first conductive sheet (13) extends into first groove (21), and conductive block (3) is further provided between first groove (21) and first conductive sheet (13). First conductive sheet (13) extends into first groove (21), which increases contact area between first and second conductive sheets, reduces resistance among battery modules, reduces amount of heat from second conductive sheet (2), and improves efficiency of transfer of current among battery modules (10). Conductive block (3) is provided between first groove (21) and first conductive sheet (13), which increases cross-sectional area at junction between second and first conductive sheets, and further reduces resistance among battery modules.
Resumen de: EP4668472A1
An end cover assembly, an energy storage apparatus (100), and method for mounting and positioning an end cover assembly are provided. The end cover assembly includes an end cover (1) and a current-collector disk (2). The end cover (1) is provided with an explosion-proof valve (11) and defines a liquid-injection hole (12). The liquid-injection hole (12) is spaced apart from the explosion-proof valve (11). The current-collector disk (2) is coaxial with the end cover (1). The current-collector disk (2) includes a main body portion (21). The main body portion (21) defines a groove (22) on a surface of the main body portion (21) positioned facing towards the end cover (1). The groove (22) extends from a center of the main body portion (21) to an edge of the main body portion (21) in a radial direction of the main body portion (21). The main body portion (21) is provided with a visual identification portion (25). The visual identification portion (25) has a visual identification characteristic different from a region of the main body portion (21) other than the visual identification portion (25). The liquid-injection hole (12) is configured for alignment of the end cover (1) and the current-collector disk (2) through the visual identification portion (25).
Resumen de: EP4668533A1
An access method of a parallel branch in a battery system, a battery management system, a device, and a storage medium are provided. The method includes: detecting a to-be-accessed branch of a battery (S110), when the detection succeeds, acquiring a voltage difference between an accessed branch of a battery system and the to-be-accessed branch, and when the voltage difference satisfies a first preset range, accessing the to-be-accessed branch to the battery system (S120).
Resumen de: EP4668365A1
A secondary battery includes an electrode assembly, and the electrode assembly includes a positive electrode plate. The positive electrode plate includes a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material and a positive electrode additive. The positive electrode active material includes a transition metal element, the transition metal element including one or more selected from the group consisting of Co, Ni, Mn, Fe, and V. The positive electrode additive is a nitrile-containing organic compound, a carbon-to-nitrogen atom number ratio of the positive electrode additive is m, where 1 ≤ m ≤ 6; a weight-average molecular weight of the positive electrode additive is Mw, where 300 ≤ Mw ≤ 800000; and based on a mass of the positive electrode active material layer, a mass percentage of the positive electrode additive is x%, where 0.01 ≤ x ≤ 0.50.
Nº publicación: EP4668398A1 24/12/2025
Solicitante:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited
Resumen de: EP4668398A1
The present application provides a positive electrode active material, a preparation method thereof, and a positive electrode plate, a battery cell , a battery, and an electric device containing the same, where the positive electrode active material includes a matrix and a sodium-rich layer formed in situ on the surface of the matrix, the matrix includes a sodium-containing layered transition metal oxide, and the sodium-rich layer includes one or more of sodium salts represented by Formula (I) and Formula (II), where m represents an integer from 1 to 8, and n represents an integer from 2 to 20.
BOPI
Sede Electrónica
