Resumen de: EP4597667A1
A lithium-ion battery includes an electrolytic solution and a negative electrode plate. The electrolytic solution includes vinylene carbonate and fluoroethylene carbonate. The negative electrode plate includes a negative active material. An OI value of the negative active material is a. Based on a weight of the electrolytic solution, a weight percent of the vinylene carbonate is b%, and a weight percent of the fluoroethylene carbonate is c%; and a, b, and c satisfy: 0.3 ≤ a/(b + c) ≤ 6; 0.02 ≤ b + c ≤ 10; and 0.1 < b/c < 3.
Resumen de: EP4597630A1
This application provides a negative active material, a negative electrode plate containing same, an electrochemical device, and an electrical device. The negative active material includes a hard carbon material. The hard carbon material includes a plurality of micropores and an average delithiation potential vs Li/Li<sup>+</sup> of the hard carbon material is 0.15 V to 0.40 V using metallic lithium as a counter electrode.
Resumen de: 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.
Resumen de: EP4597690A1
A battery self-heating circuit, comprising a first battery group, a second battery group, a first capacitor, a second capacitor, multiple phases of bridge arms, and multiple phase of windings, which correspond to the multiple phases of bridge arms on a one-to-one basis, wherein each phase of winding is connected to the midpoint of a corresponding bridge arm; a negative electrode of the first battery group is connected to a positive electrode of the second battery group, and the negative electrode of the first battery group and the positive electrode of the second battery group are connected to a neutral point of the multiple phases of windings; a positive electrode of the first battery group is connected to a first bus terminal of the multiple phases of bridge arms, and a negative electrode of the second battery group is connected to a second bus terminal of the multiple phases of bridge arms; and a first end of the second capacitor is connected to a second end of the first capacitor, the first end of the second capacitor and the second end of the first capacitor are connected to the neutral point of the multiple phases of windings, a second end of the second capacitor is connected to the negative electrode of the second battery group, and a first end of the first capacitor is connected to the positive electrode of the first battery group.
Resumen de: EP4597693A1
Provided are a cell battery (100), a battery pack, and an electricity-consumption device. The cell battery includes: a housing (10); a first end cover (100a) provided at an end of the housing (10), the first end cover (100a) including a first base cover (1a) and a first explosion-proof valve (20) mounted at the first base cover (1a); and a second end cover (100b) provided at the other end of the housing (10), the second end cover (100b) including a second base cover (1b) and a second explosion-proof valve (30) mounted at the second base cover (1b).
Resumen de: EP4597728A1
This application provides a battery pack (100) and an electric device having the battery pack (100). The battery pack (100) includes a cell assembly (10) and a connecting member (20). The cell assembly (10) includes M cells (11) stacked along a first direction (X). Each cell (11) includes a cell housing (111), an electrode terminal (113), and an electrode assembly (112) disposed within the cell housing (111). The connecting member (20) includes N conductive sheets (23) spaced apart. The electrode terminal (113) is connected to the conductive sheet (23). Electrode terminals (113) of adjacent cells (11) are arranged in a non-overlapping manner in the first direction (X), reducing the risk of short circuits between adjacent electrode terminals (113). The electrode terminal (113) is connected to the electrode assembly (112) and extends out from the cell housing (111). Along the first direction (X), a projection of a portion, located outside the cell housing (111), of an electrode terminal (113) of any one of the cells (11) is separated from a projection of a portion, located outside the cell housing (111), of an electrode terminal (113) of an adjacent cell (11) in a second direction (Y). The second direction (Y) is perpendicular to the first direction (X), which is conducive to the connection of the electrode terminals (113) to other conductive members.
Resumen de: EP4597673A1
An electrochemical device of this application includes a positive electrode, a negative electrode, and an electrolyte, where the positive electrode includes a positive electrode active material, the positive electrode active material includes element A, and element A is selected from at least one of La, Y, or Nb; based on a mass of the positive electrode active material, a mass percentage of element A is x%; the electrolyte includes a compound represented by formula (I); and based on a mass of the electrolyte, a mass percentage of the compound represented by formula (I) is a%.
Resumen de: EP4597622A1
The present disclosure is intended to provide a production method for a positive electrode active material with reduced degradation in resistance property. The technology disclosed herein relates to a production method for a positive electrode active material after sintering, the method comprising: a preparation step of preparing an end material that includes a positive electrode composite material including a positive electrode active material for a secondary battery and a binder containing fluorine; and a sintering step of sintering the positive electrode composite material in a container, wherein the sintering step is performed with magnesium hydroxide present in the container. Consequently, a positive electrode active material with reduced degradation in resistance property is achieved.
Resumen de: EP4597733A1
A busbar assembly according to one embodiment of the present disclosure includes: a busbar including a body and end portions that extend from both ends of the body and have through holes defined therein; an insulating layer that encloses the body and has a groove formed in a recessed shape; and a cap that is inserted into the groove and encloses the end portions, wherein the insulating layer has a stronger elasticity than the cap.
Resumen de: EP4596495A1
The present invention relates to a carbon nanotube dispersion, comprising carbon nanotubes, a first dispersant containing a nitrogen atom, a mixture of a second dispersant and cations, and a solvent, wherein the second dispersant contains at least one hydroxy group and at least one carboxyl group in an aromatic ring, and the cations contain at least one selected from the group consisting of an alkali metal ion, an alkaline earth metal ion, an aluminum ion, a transition metal ion, an ammonium ion and a sulfonium ion, and a method for preparing the same.
Resumen de: 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).
Resumen de: 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.
Resumen de: 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.
Resumen de: WO2024073512A2
A device can include a battery electrode that comprises a substrate having one or more polymeric materials and a layer disposed on the substrate. The layer can include one or more conductive materials, have a thickness no greater than 12 micrometers, and have a porosity of at least 5% by volume. Additionally, an electrode layer including a seed layer can comprise a number of fused nanoparticles. The electrode layer can also include a lithium metal layer disposed on the number of fused nanoparticles. The electrode layer can be formed by producing, on a polymeric current collector layer, a seed layer that includes nanoparticles. A formulation to form the seed layer can include nanoparticles having ligands and then removing the ligands using one or more thermal and/or one or more chemical treatment processes. The seed layer can be electrically conductive, acting as the current collector when disposed on a polymeric substrate.
Resumen de: WO2024073410A1
Ternary electrolyte compositions are described, having a primary solvent, a mediating solvent, a diluent, and at least one lithium salt.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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%.
Resumen de: EP4597594A1
A system and a method for manufacturing an electrode assembly for a battery are provided. The system includes a first cutter configured to cut a first patterned electrode sheet to form a first electrode cut portion having a first length, a first sensor arrangement configured to generate a first cutting operation code and to acquire first position data reflecting positions on the first electrode sheet, a second cutter configured to cut a second patterned electrode sheet to form a second electrode cut portion having a second length, a second sensor arrangement configured to generate a second cutting operation code and to acquire second position data, a combinator configured to manufacture an electrode assembly by combining the first electrode cut portion and the second electrode cut portion with a separator interposed therebetween, and an identification information assigning device configured to assign identification information to the manufactured electrode assembly and associate the identification information with the first cutting operation code and the first position data, and with the second cutting operation code and the second position data.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Nº publicación: EP4597682A1 06/08/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG Energy Solution, Ltd
Resumen de: 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.