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1499
results.
Updated on
08/08/2025 [07:36:00]
Results 250 to 275 of 1499
Absstract of: EP4597134A1
The apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery; and a control unit configured to divide a capacity range of the battery profile into a plurality of sections, derive a target value for any one of one or more target indicators among a plurality of diagnostic indicators preset in each section, compare a correspondence relationship between the derived plurality of target values with one or more reference profile preset to represent a correspondence relationship between the plurality of target indicators, and diagnose a state of the battery based on the comparison result.
Absstract of: EP4597133A1
The apparatus for diagnosing a battery according to the present disclosure includes a profile obtaining unit configured to obtain a battery profile representing a correspondence relationship between voltage and capacity of a battery; a profile adjusting unit configured to adjust a preset reference positive electrode profile and a reference negative electrode profile to correspond to the battery profile to generate an adjusted positive electrode profile and an adjusted negative electrode profile; and a control unit configured to extract a diagnostic factor for the battery from at least one of the adjusted positive electrode profile and the adjusted negative electrode profile and diagnose a state of the battery based on the extracted diagnostic factor.
Absstract of: EP4596194A2
Disclosed is a battery cutting apparatus, including a carrying assembly, a first cutter assembly, a first driving assembly, a second cutter assembly and a second driving assembly. The carrying assembly is configured to carry a battery to be cut. The first driving assembly is in transmission connection with at least one of the first cutter assembly and the carrying assembly and configured to make them move relative to each other along a first direction. The second driving assembly is in transmission connection with at least one of the second cutter assembly and the carrying assembly and configured to make them move relative to each other along a second direction perpendicular to the first direction. At least one of the first and second cutter assembly is a pressing and cutting cutter assembly, which is configured to be able to press and break the housing of the battery.
Absstract of: EP4596113A1
Disclosed is a slot die coater for improving profiles of edges of an electrode active material layer.A slot die coater according to the present disclosure includes: an upper die block, a middle die block, and a lower die block; an upper shim provided between the upper die block and the middle die block to form an upper slot; and a lower shim provided between the middle die block and the lower die block to form a lower slot, wherein a first coating liquid is discharged through an upper outlet communicating with the upper slot and applied onto a base material, and a second coating liquid is discharged through a lower outlet communicating with the lower slot and applied onto the base material, wherein the upper shim includes at least one first opening, wherein the lower shim includes a second opening at a position corresponding to the first opening, and wherein the second opening includes a section having a smaller width than the first opening at a front end adjacent to the lower outlet.
Absstract of: WO2024073410A1
Ternary electrolyte compositions are described, having a primary solvent, a mediating solvent, a diluent, and at least one lithium salt.
Absstract of: EP4597737A1
The present application relates to the technical field of batteries, and provides an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly comprises two electrode sheets having opposite polarities and a separator used for separating the two electrode sheets, the two electrode sheets and the separator being wound in a winding direction to form a main body and two tabs. The tabs and the main body are arranged in a first direction; each tab comprises a plurality of tab portions arranged at intervals in the winding direction; the tab portions are bent relative to the first direction; at least parts of the plurality of tab portions are stacked in the first direction; and a protrusion is formed on at least one side of each tab portion in the thickness direction thereof. By providing the protrusions on the tab portions, the thickness of the plurality of tab portions stacked together can be increased after the tab portions are bent, and the problem of a small local thickness of the tab can be alleviated, so that the risk that the tab is welded through in the subsequent assembly process is reduced, and reduction of damage to the electrode assembly is facilitated, improving the production quality of the battery cell comprising the electrode assembly.
Absstract of: WO2024073001A1
Embodiments of the present disclosure include an anode for a battery including a substrate, a metal film disposed on the substrate, and a film stack disposed on the metal film. The film stack includes a lithium carbonate film and a lithium halide film disposed on the lithium carbonate. The lithium carbonate film is disposed on the metal film.
Absstract of: AU2023354916A1
The subject invention pertains to design of strategies that enable the more effective utilization of active intercalation materials in the production of lithium ion batteries. Na- and K-ion intercalation "props" open the ID tunnel, reduces electrostatic repulsions between inserted Li-ions, and entirely modifies diffusion pathways, enabling orders of magnitude higher Li-ion diffusivities and accessing higher capacities. The subject invention provides materials and batteries comprising the materials produced via the methods disclosed within this application.
Absstract of: TW202425391A
Disclosed herein are joining methods (e.g., methods of forming a joined material) and devices comprising materials joined by said methods. For example, the disclosed subject matter related to methods of joining one or more metallized polymer current collectors together and/or to a tab. For example, the methods can comprise: placing one or more metallized polymer current collector proximate a tab, such that at least a portion of the metallized polymer current collector(s) overlaps with at least a portion of the tab in an overlap region; placing a conductive material proximate the overlap region; inducing flow of the conductive material such that the conductive material flows at least between the portion of the metallized polymer current collector(s) and the portion of the tab; and subsequently solidifying the conductive material, thereby forming a joint that joins the metallized polymer current collector(s) to the tab.
Absstract of: EP4597624A1
The present invention relates to a positive electrode active material for a lithium rechargeable battery, which is a lithium transition metal oxide containing nickel (Ni) and manganese (Mn), wherein the lithium transition metal oxide may be a single particle and has a crystal defect rate of less than 3%.
Absstract of: EP4597687A1
Provided are a crushed unit battery material, a crushed battery material including the same, and a battery treatment method. The crushed unit battery material is a crushed unit battery material for recovering valuable metals from a waste battery, has a layered structure including a separator in which a positive electrode or a negative electrode is laminated on at least one surface, and satisfies the following Conditions 1 and 2:<Condition 1> the layered structure has a laminate structure of 1 layer or more and 7 layers or less.<Condition 2> a size of the crushed unit battery material is 100 mm or less based on a long axis which is the longest axis in horizontal, vertical, and height directions.
Absstract of: EP4597675A1
This application provides a sodium secondary battery electrolyte, a sodium secondary battery, and an electrical device. The sodium secondary battery electrolyte includes a solvent. A percentage of an amount of substance of a free solvent in relation to a total amount of substance of the solvent in the electrolyte is not greater than 50%. The electrolyte can improve the high-temperature cycle performance of the battery, reduce the high-temperature gassing amount of the battery, and improve the electrochemical performance and safety performance of the battery at high temperature.
Absstract of: EP4597627A1
This application provides a positive active material. The positive active material is a composite of NaxRy(PO4)z(P2O7)k and C, where 1 ≤ x ≤ 7, 1 ≤ y ≤ 4, 1 ≤ z ≤ 2, 1 ≤ k ≤ 4, and R includes at least one of Mg, Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Sn, Hf, Ta, W, or Pb; and a water content of the positive active material is not higher than 1600 ppm. This application further provides a method for preparing the positive active material, a positive electrode plate containing the material, a secondary battery, and an electrical device. The positive active material of this application contains a relatively low water content, and can effectively alleviate or avoid difficulty of processing of the positive active material, and contribute to a relatively high level of specific charge capacity, specific discharge capacity, and first-cycle Coulombic efficiency of the positive electrode plate and secondary battery containing the material.
Absstract of: EP4597136A1
The present invention relates to an apparatus and a method for diagnosing a battery cell, wherein the battery cell diagnostic apparatus according to an embodiment of the present invention may include a reference cell module including at least one reference cell composed of a super-capacitor, a measuring device configured to measure a reference impedance of the reference cell and a battery impedance of the battery cell, and a processor configured to compare the battery impedance with the reference impedance to determine whether there is an abnormality in the battery cell.
Absstract of: EP4597682A1
The present invention relates to an electrode assembly and a secondary battery including same. The electrode assembly according to an embodiment of the present invention is formed by a cathode, a separator, and an anode which are wound together, and may comprise a protective member which is arranged to face an end of at least one of the cathode and the anode and in which a flame retardant is filled.
Absstract of: EP4597719A1
Embodiments of this application provide an electrode assembly, a battery cell, a battery, an electric device, and a method for manufacturing a separator, and pertain to the field of battery technologies. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator, and the separator is disposed between the positive electrode plate and the negative electrode plate; and the separator includes a first section, a second section, and a third section arranged sequentially in a width direction of the separator, and a porosity of the second section is less than both a porosity of the first section and a porosity of the third section. The electrode assembly provided by the embodiments of this application includes a separator with different porosities in different sections, which can alleviate precipitation of metal ions in the electrode assembly.
Absstract of: EP4597670A1
A gel electrolyte composition, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. A viscosity of the gel electrolyte composition at 25 °C is 500 mPa·s to 100000 mPa·s. The gel electrolyte composition falls within an appropriate viscosity range, thereby increasing the interface wettability of the battery and the ionic conductivity of the gel electrolyte composition at a room temperature and a high temperature, and on the other hand, alleviating interface side reactions of the gel electrolyte composition and improving the Coulombic efficiency of the battery.
Absstract of: EP4596494A1
A preparation method for a lithium iron phosphate material with low iron phosphide content is provided, including the following steps: mixing and dissolving anhydrous iron phosphate with a lithium source, a carbon source, a dopant and deionized water to obtain a mixed solution; conducting wet grinding and spray drying on the mixed solution to obtain a sintering precursor; conducting heat treatment and pulverization on the sintering precursor to obtain a lithium iron phosphate material, where the heat treatment process includes preheating, low-temperature sintering, high-temperature sintering, and cooling, a preheating temperature is lower than a low-temperature sintering temperature, the low-temperature sintering temperature is lower than a high-temperature sintering temperature, and a cooling temperature is lower than the high-temperature sintering temperature. The heat treatment process is conducted under a rare gas atmosphere, and the rare gas content in the high-temperature sintering is greater than that in the low-temperature sintering. Compared with the conventional process, the lithium iron phosphate material has high purity, remarkably reduces the iron phosphide content, maintains a high compaction density, and has excellent electrochemical performance. A lithium iron phosphate material and a lithium-ion battery using the lithium iron phosphate material are further provided.
Absstract of: EP4597716A1
A battery pack according to one embodiment of the present disclosure includes: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; a pack case configured to house the cell module assembly and including a venting port on at least one surface; and an outer cover that covers at least one surface of the pack case and is arranged apart from the outer surface of the pack case by a prescribed distance, wherein a space between the pack case and the outer cover forms a venting flow path through which venting gas generated during the thermal event of the battery cell moves, and wherein the venting gas is discharged to the outside through an opened space between the outer cover and the pack case formed on at least one end part of the outer cover.
Absstract of: EP4597684A1
A battery pack according to one embodiment of the present disclosure includes: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; a pack case that houses the cell module assembly in its internal space; and a fire extinguishing unit capable of extinguishing the battery cells by supplying a fire extinguishing agent into the pack case when a thermal event occurs in the battery cells, wherein the pack case includes at least one drain port on at least one of a longitudinal edge and a widthwise edge of the bottom surface of the pack case.
Absstract of: EP4597710A1
A battery pack according to one embodiment of the present disclosure includes: a cell module assembly including a battery cell stack in which a plurality of battery cells are stacked; an electrical connection unit including a connector for electrical connection between the battery packs; a pack case that houses the cell module assembly and the electrical connection unit in the inside thereof and is opened at its upper surface; and a fire extinguishing tank that covers the upper part of the pack case, wherein the pack case includes a connector through-hole portion having an opening shape provided on a lower surface of the pack case to allow the connector to pass through, wherein the fire extinguishing tank includes a connector through-hole portion having a tubular shape that penetrates the fire extinguishing tank and protrudes upward from the upper surface of the fire extinguishing tank, and wherein the connector is located through the connector through-hole portion and the connector through-hole portion, thereby being electrically connected between the plurality of stacked battery packs.
Absstract of: EP4597692A1
A battery module according to an exemplary embodiment of the present invention includes a battery cell stack in which a plurality of battery cells are stacked side by side and adjacent to each other; a top frame covering an upper surface of the battery cell stack; a bus bar frame coupled to the top frame and covering a side of the battery cell stack; and a module frame having a quadrangular tube shape and configured to accommodate a battery cell assembly formed by combining the battery cell stack, the top frame, and the bus bar frame, wherein the top frame includes a first protrusion protruding toward an upper surface of the module frame at one end portion of the top frame, and wherein the module frame includes a second protrusion protruding toward the top frame at a position corresponding to the other end portion located on an opposite side to the one end portion of the top frame on an inner side of the upper surface of the module frame.
Absstract of: EP4597717A1
Provided is a battery pack. The battery pack includes at least two battery modules (100). Each battery module (100) includes a housing (1) and multiple battery cells (2) disposed in the housing (1). Multiple pressure relief holes (122) are disposed on a side surface of the housing (1). The multiple pressure relief holes (122) are in a one-to-one correspondence with the multiple cells (2). One end of each battery cell (2) has an explosion-proof hole. The explosion-proof hole communicates with a corresponding pressure relief hole (122). Two adjacent battery modules (100) form a module assembly. In the same module assembly, two housings (1) are spaced apart to form a pressure relief channel (300), and pressure relief holes (122) on the two housings (1) are facing the pressure relief channel (300).
Absstract of: EP4597688A1
The present disclosure relates to an apparatus and method for battery cooling control. An apparatus for battery cooling control according to some embodiments includes a cooling water control apparatus configured to control the supply of cooling water for cooling a battery system, and a control apparatus configured to obtain the state of charge and charge/discharge rate of the battery system, determine a heating value of the battery system according to the state of charge and the charge/discharge rate, and control the cooling water control apparatus to control the supply of the cooling water according to the heating value.
Nº publicación: EP4597643A1 06/08/2025
Applicant:
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited
Absstract of: EP4597643A1
This application provides a secondary battery, a battery module, a battery pack, and an electrical device. The secondary battery includes a positive electrode plate and an electrolyte solution. The electrolyte solution contains a film-forming additive. A film resistance x Ω of the positive electrode plate and a mass percent y% of the film-forming additive based on a total mass of the electrolyte solution satisfy: x × y ≤ 25. The film resistance and the film-forming additive of the secondary battery provided in this application satisfy the above relationship. The Coulombic efficiency, high-temperature cycle performance, and high-temperature storage performance of the battery can be enhanced by regulating the film resistance and the film-forming additive of the secondary battery.
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