Resumen de: EP4611135A1
Disclosed herein are a battery top cover, a process for assembling a battery top cover, and a power battery. The battery top cover comprises a cover assembly, a post and a pressing block. The post passes through the cover assembly and then is engaged with a mounting hole of the pressing block, a welding groove is formed on a surface of the pressing block, the welding groove is communicated with a peripheral side of the mounting hole, the post and the pressing block are fixed by welding, and the pressing block and the post respectively abut against opposite sides of the cover assembly. The present disclosure improves the assembly efficiency of the battery top cover and ensures the connection strength of the battery top cover.
Resumen de: EP4611063A1
A lithium manganese iron phosphate substrate, cathode material, and their preparation method, as well as a lithium battery, belonging to the field of lithium-ion battery technology. The preparation of the lithium manganese iron phosphate substrate comprises the following steps: dissolving soluble ferrous salt, soluble manganese salt, phosphoric acid, and lithium hydroxide in deionized water to react, obtaining Material A; filtering Material A, taking the filter cake and drying it to obtain Material B; Heat treating Material B in an inert gas atmosphere to obtain the lithium manganese iron phosphate substrate. By coating the surface of the carbon-free nano lithium manganese iron phosphate substrate with metal oxides or metal salts and carbon, the coating layer formed on the surface of the composite lithium manganese iron phosphate material effectively prevents the reaction between the lithium battery and the electrolyte.
Resumen de: EP4611161A1
A battery unit (1), a battery module, and an electrical device are disclosed. The battery unit (1) includes: a housing (200), where the housing (200) is provided with a first electrode terminal (31) and a second electrode terminal (32); at least one battery cell (40), where the battery cell (40) includes a first electrode plate and a second electrode plate, and the second electrode terminal (32) is connected to the second electrode plate; and an adapter strip assembly (100), where the adapter strip assembly (100) is sandwiched between the housing (200) and the battery cell (1) and includes a first adapter strip (12) and a first bracket (1103), and the first adapter strip (12) is supported on the first bracket (1103) and connected to the first electrode terminal (31) and the first electrode plate.
Resumen de: EP4611147A1
The embodiment of the present application provides a housing component, a battery cell, a battery and an electrical device, belonging to the field of battery technology. The housing component is used for the battery cell, and the housing component has a first surface, and the first surface is provided with a sink groove, and the bottom wall of the sink groove includes a first area and a second area, and the thickness of the first area is less than the thickness of the second area, and at least a part of the first area is provided with a notch groove, and the housing component is configured to rupture at the notch groove to release the pressure inside the battery cell. The housing component has low difficulty in processing and manufacturing, and low processing and manufacturing costs, thereby reducing the processing and manufacturing costs of the battery cell and the battery.
Resumen de: EP4611145A1
Embodiments of this application provide a battery and an electric apparatus. The battery includes a battery pack and a reinforcing member. The battery pack includes multiple battery cells stacked along a first direction; and the reinforcing member extends along the first direction; where the reinforcing member is disposed on at least one side of the battery pack along the first direction, and the reinforcing member is connected to the battery pack. Multiple battery cells are stacked into sets and the arranged battery packs are connected to a same reinforcing member, enhancing the stiffness of the battery with this structure, and making it less likely to deform when subjected to collision and compression. This also improves the vibration resistance of the battery and enhances the reliability and safety of the battery.
Resumen de: EP4611056A1
A negative electrode plate and an electrode assembly, a battery cell, a battery, and an electric apparatus containing the same are provided. The negative electrode plate (10) includes: a negative electrode current collector, having a first surface (10a) and a second surface (10b) opposite each other in a thickness direction of the negative electrode current collector; a first negative electrode film layer located on the first surface side, the first negative electrode film layer including first silicon-based negative electrode active material particles; and a second negative electrode film layer located on the second surface side, the second negative electrode film layer including second silicon-based negative electrode active material particles; where a capacity C1 per unit area of the first negative electrode film layer and a capacity C2 per unit area of the second negative electrode film layer satisfy: 0.005 mAh/mm<2>≤C2
Resumen de: EP4611154A1
Electrochemical devices are disclosed for various applications such as secondary batteries. In an embodiment, an electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte. The separator includes a porous separator including inorganic fibers or including inorganic particles and a polymer binder, and the electrolyte includes a nitrile-based compound. The electrochemical device exhibits high ionic conductivity by including the porous separator having wettability to the electrolyte.
Resumen de: EP4611093A1
Electrochemical devices are disclosed for various applications such as secondary batteries. In an embodiment, an electrochemical device including a positive electrode, a negative electrode, a separator, and an electrolyte. Specifically, the separator includes a porous polymer membrane including one or more of hydrophilic inorganic particles or a hydrophilic polymer that are blended in a porous substrate, and the electrolyte includes a nitrile-based compound. The electrochemical device exhibits high ionic conductivity by including the porous separator having wettability to the electrolyte.
Resumen de: EP4611095A1
Electrochemical devices are disclosed for various applications such as secondary batteries. In an embodiment, an electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte. The separator includes a porous hydrophilic polymer membrane, and the electrolyte includes a nitrile-based compound. The electrochemical device exhibits high ionic conductivity by including the porous separator having wettability to the electrolyte.
Resumen de: EP4611149A1
Embodiments of the present application provide a battery cell, a battery and an electrical device, which relate to the technical field of batteries. The battery cell includes a shell, the shell includes a pressure relief component, the pressure relief component has a first groove, and the pressure relief component is configured to be capable of cracking along the first groove, so as to release pressure in the battery cell. The first groove includes a first groove section, a second groove section and a third groove section, the first groove section and the third groove section are oppositely arranged, the second groove section is connected to the first groove section and the third groove section, and the residual thickness of the first groove section and the residual thickness of the third groove section are both less than the residual thickness of the second groove section. This is equivalent to the residual thickness of the second groove section being increased, increasing the anti-fatigue strength of the pressure relief component in the region where the second groove section is disposed, decreasing the possibility of the pressure relief component cracking in the second groove section during normal use of the battery cell, increasing the long-term reliability of the pressure relief component, and prolonging the service life of the battery cell.
Resumen de: EP4611103A1
The present application provides a secondary battery and an electric device. The secondary battery comprises a battery case provided with an accommodating cavity, a battery cell assembly located in the accommodating cavity, and an electrolyte. The electrolyte comprises a chain carboxylic acid ester compound, wherein based on the total mass of the electrolyte, the mass content W of the chain carboxylic acid ester compound satisfies: 0.03 ≤ W/R ≤ 7. The secondary battery has excellent fast charging performance and long service life.
Resumen de: EP4611102A1
The present application provides a secondary battery and an electrical apparatus. The secondary battery comprises a battery case having an accommodating cavity, a cell assembly disposed in the accommodating cavity, and an electrolyte containing a first additive, the first additive comprising a sulphate compound; wherein a ratio W/R of a mass percentage W of the sulphate compound to a residual space R is within a range of 0.03% to 40% based on the total mass of the electrolyte, which enables the secondary battery to achieve a balance between service life and energy density.
Resumen de: EP4611115A1
The present invention relates to a method for manufacturing a lithium secondary battery, which includes a first step of preparing a battery case, a second step of disposing an electrode assembly in the battery case and injecting an electrolyte such that electrolyte mass per unit capacity is a (g/Ah) to assemble a battery cell, a third step of activating the battery cell, and a fourth step of precharging/discharging the activated battery cell b times, wherein Equation 1 below is satisfied, 15≤486.77−373.09×e−0.006b×a0.29≤30 wherein in Equation 1 above, a is an integer of 2.0 to 3.0 and b is an integer of 0 to 3.
Resumen de: EP4609984A1
A jig according to an embodiment of the present disclosure, which is a jig configured to support an electrode that is transferred along a first direction and includes a coated portion coated with an electrode active material and an uncoated portion not coated with the electrode active material, includes a first support unit configured to support an area corresponding to the uncoated portion in the electrode and including a laser receiving portion formed at a position corresponding to an area irradiated with a laser for cutting the uncoated portion; and a second support unit including at least one support roller configured to support an area corresponding to the coated portion in the electrode.
Resumen de: EP4611077A1
Provided is a negative electrode-free battery which includes: a positive electrode; a negative electrode facing the positive electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium transition metal oxide, the negative electrode includes a negative electrode current collector for a negative electrode-free battery, the negative electrode current collector for a negative electrode-free battery includes a metal current collecting substrate, the metal current collecting substrate includes a space portion, at least a portion of which is exposed to the outside, and a specific relational formula is satisfied.
Resumen de: EP4611157A1
An organic/ inorganic composite separator includes (a) a polyolefin porous substrate having pores; and (b) a porous active layer containing a mixture of inorganic particles and a binder polymer, with which at least one surface of the polyolefin porous substrate is coated, wherein the porous active layer has a peeling force of 5 gf/cm or above, and a thermal shrinkage of the separator after being left alone at 150°C. for 1 hour is 50% or below in a machine direction (MD) or in a transverse direction (TD). This organic/inorganic composite separator solves the problem that inorganic particles in the porous active layer formed on the porous substrate are extracted during an assembly process of an electrochemical device, and also it may prevent an electric short circuit between cathode and anode even when the electrochemical device is overheated.
Resumen de: EP4611144A2
The present invention relates to a tray for a secondary battery, which comprises: an accommodation part having a bottom surface, on which the secondary battery is disposed, and a side surface provided along an edge of the bottom surface to accommodate the secondary battery; and a pressing part configured to press a side portion of the secondary battery while descending to the bottom surface and moving to the secondary battery due to a load of the tray loaded on an upper end to fix the secondary battery.
Resumen de: EP4611065A1
The present invention provides a positive electrode active material composite comprising a positive electrode active material substrate and a coating layer comprising a compound represented by Formula 1 below coated on the positive electrode active material substrate, a positive electrode comprising the positive electrode, and a lithium-ion secondary battery comprising the positive electrode. Formula 1 LiaTibOc-dXd
Resumen de: EP4611128A1
The present technology provides a battery cell assembly including: a cell block with a plurality of battery cells; a first cover plate facing a first surface of the cell block, and including a first cooling channel; a second cover plate facing a second surface of the cell block, and including a second cooling channel; a supply pipe into which a cooling fluid supplied from the outside flows, the supply pipe including a first supply channel connected to an inlet of the first cooling channel and a second supply channel connected to an inlet of the second cooling channel; and a discharge pipe configured to discharge the cooling fluid to the outside, the discharge pipe including a first discharge channel connected to an outlet of the first cooling channel and a second discharge channel connected to an outlet of the second cooling channel.
Resumen de: EP4611131A1
An explosion prevention valve, a cover plate assembly, a battery core, a battery pack, and an electrical system are provided. The explosion prevention valve includes a main body, an explosion prevention piece, and a temperature-sensitive film. The main body is provided with a pressure relief hole extending through a thickness direction thereof. The explosion prevention piece is connected to the main body. The explosion prevention piece is arranged to cover the pressure relief hole. The temperature-sensitive film is connected to the main body. The temperature-sensitive film is arranged to cover the pressure relief hole. The temperature-sensitive film is made of plastic, and has a critical breaking pressure value which is inversely proportional to a temperature of the explosion prevention valve. In the technical solutions of the present disclosure, the temperature-sensitive film is arranged in the explosion prevention valve. When the battery core is in a normal operating condition, the temperature-sensitive film and the explosion prevention piece jointly cover the pressure relief hole of the main body, to increase an opening pressure of the pressure relief hole, so as to reduce a risk of accidentally opening the pressure relief hole. When the battery core is out of control, a high temperature generated after the battery core is out of control quickly softens the temperature-sensitive film, to reduce the critical breaking pressure value of the temperature-sensitive film, so as t
Resumen de: EP4611151A1
Disclosed is a battery pack having a battery tray. The battery tray includes a bottom plate, two side beams arranged opposite to each other, and two edge beams connected between the two side beams and arranged opposite to each other, where the two side beams and the two edge beams are each connected to a peripheral edge of the bottom plate, an accommodating cavity for accommodating a battery cell assembly is enclosed by the two side beams, the two edge beams, and the bottom plate, explosion-proof valves are arranged on the two side beams respectively, an exhaust channel extending in a length direction of the edge beam is formed on the edge beam, two end portions of an inner wall of the edge beam are provided with vent grooves that are separately in communication with the exhaust channel, and the vent groove is configured to be able to communicate with a gap between the side beam and the battery cell assembly.
Resumen de: EP4611137A1
A vehicle battery pack structure includes: a lower case, a plurality of battery modules accommodated in the lower case, an upper case coupled to an upper portion of the lower case and configured to cover a space accommodating the battery modules, and a plurality of module fixing bolts configured to penetrate end plates of the battery modules and fixed to the lower case. The vehicle battery pack structure further includes: a connection support bar disposed on upper sides of the end plates so as to connect the end plates of the battery modules adjacent to each other, and a plurality of support bolts configured to respectively penetrate the upper case and the connection support bar and fixed to the end plates.
Resumen de: EP4611136A1
A tab assembly (100) includes a tab (1) and a tab adhesive (2). Along a thickness direction (X) of the tab (1), the tab (1) includes a first surface (11) and a second surface (12) opposite to each other. Both the first surface (11) and the second surface (12) are provided with the tab adhesive (2). The tab adhesive (2) provided on the first surface (11) and the tab adhesive (2) provided on the second surface (12) jointly wrap the tab (1). Along a length direction (Y) of the tab (1), the tab (1) includes a first end (1a) and a second end (1b) opposite to each other. The tab adhesive (2) includes a first layer (21) and a second layer (22). The first layer (21) and the second layer (22) are stacked along a direction from the first end (1a) to the second end (1b). The first layer (21) includes a first adhesive body (211). The second layer (22) includes at least one layer of a second adhesive body (221). A material of the second adhesive body (221) comprises one or more selected from the group consisting of polyethylene, polypropylene and polyethylene terephthalate. A thickness of the tab (1) is Ti, and a thickness of the second adhesive body (221) is T2, Ti ≥ 80 µm, and T2 ≤ 70 µm.
Resumen de: EP4610074A1
A heat exchange system (1) has an inlet branch (5) adapted to receive a heat exchange liquid, supplied by a first pump (8) and cooled by a chiller (9), and an outlet branch (6) which circulates the heat exchange liquid to the chiller (9); the system has a cooling line (26), which extends from the inlet branch (5) to the outlet branch (6) along a battery (2) of a vehicle (3) for cooling this battery (2), and a branch line (30), which extends along a thermal reservoir (34) containing a material with characteristics such as to store heat/cold and is configured in such a way as to exchange heat between said material and the heat exchange liquid; the system also has at least one valve (25,) which is configured and controllable to achieve a first operating condition, in which the liquid flows exclusively in the cooling line (26), and a second operating condition, in which the liquid flows in the branch line (30) and, in series, in the cooling line (26).
Nº publicación: EP4611092A1 03/09/2025
Solicitante:
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
Resumen de: EP4611092A1
An electrode assembly, a method for fabricating the electrode assembly, and a secondary battery including the electrode assembly are disclosed. An electrode assembly includes a pair of electrode plates, a separator between the pair of electrode plates, and an electrode tab including a plurality of conductive wires arranged side by side in a width direction, and each of the plurality of conductive wires includes an overlapping part that overlaps an electrode plate of the pair of electrode plates to be bonded to the electrode plate, and a protruding part connected to the overlapping part and protruding to an outside at a boundary of the electrode plates.