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1109
resultados
Última actualización
01/01/2026 [07:16:00]
Resultados 25 a 50 de 1109
Resumen de: EP4672549A1
The present application provides an energy storage device and a circuit breaking control method thereof. The energy storage device comprises a main circuit formed by multiple battery modules connected in series, wherein a control unit is configured to control a switch assembly to connect a single battery module in series into or bypass out of the main circuit of the energy storage device, and when a battery module is bypassed, a circuit path connecting the battery modules before and after is formed in the battery module. The energy storage device further comprises a detection module and a circuit breaking protection module connected in series with the main circuit of the energy storage device; the detection module is configured to detect working status of the energy storage device, and turn on the circuit breaking protection module when detecting failure of the energy storage device; the circuit breaking protection module is configured to output a circuit breaking drive power after being turned on, and drive a circuit breaker in the main circuit of the energy storage device to break based on the circuit breaking drive power, to disconnect the energy storage device.
Resumen de: EP4671790A1
A battery management apparatus according to an embodiment disclosed herein includes a data management unit configured to calculate a degradation degree (a state of health (SOH)) of each of a plurality of batteries and a controller configured to identify a plurality of target batteries based on a first value that is a deviation of the SOH of each of the plurality of batteries relative to an average of the SOHs of the plurality of batteries, divide the plurality of target batteries into a plurality of groups based on SOHs thereof, and diagnose at least one target battery based on deviations of open circuit voltages (OCVs) between a plurality of target batteries included in each of the plurality of groups.
Resumen de: EP4671788A1
A charge/discharge test system includes: a test device 20-1 that performs a charge/discharge test on secondary batteries 15-1 to 15-n connected to the test device and acquires measurement data DT1 based on a first sampling interval f1, the measurement data being created from a signal indicating a battery state due to each of the test devices 20-1 to 20-m, the measurement data being to be analyzed to determine a battery characteristic; a large-capacity storage device 1 (100) that stores the measurement data; and an evaluation data output means that extracts the measurement data based on a second sampling interval f2 that is A times the first sampling interval, based on the stored measurement data, and outputs the extracted measurement data as evaluation data DT2, the A representing an integer of 2 or more. According to the charge/discharge test system, detailed data at the time of abnormality in a long-term test can be freely output, so that a detailed evaluation of current, voltage, temperature, or the like can be performed.
Resumen de: EP4672403A1
Embodiments of the present application provide a secondary battery and an electric device. The secondary battery comprises a positive electrode sheet, a separator, and a negative electrode sheet; at least one of the positive electrode sheet, the separator, or the negative electrode sheet comprises an ion trapping agent; the reduction potential of the ion trapping agent relative to lithium metal is 0-2 V. The cycle performance of the secondary battery provided by the embodiments of the present application is improved.
Resumen de: EP4671255A1
The present disclosure provides a silicon-containing compound, an electrolyte solution for a secondary battery, a secondary battery, and an electrical device. The silicon-containing compound has a general formula represented by formula I, where X<sub>1</sub> and X<sub>2</sub> each independently include -NR<sub>4</sub>- or -O-; R<sub>3</sub> includes hydrogen, halogen, carbonyl, carboxyl, ester group, cyano, etheralkyl, halogen-substituted or unsubstituted C<sub>1</sub>-C<sub>10</sub> alkyl, halogen-substituted or unsubstituted C<sub>6</sub>-C<sub>60</sub> aryl, halogen-substituted or unsubstituted cyclic sulfonate group, halogen-substituted or unsubstituted cyclic sulfate group, halogen-substituted or unsubstituted cyclic sulfite group, halogen-substituted or unsubstituted cyclic sulfone group, or halogen-substituted or unsubstituted cyclic carbonate group; and R<sub>1</sub>, R<sub>2</sub>, R<sub>4</sub>, and R<sub>5</sub><sup>1</sup> each independently include hydrogen, halogen-substituted or unsubstituted C<sub>1</sub>-C<sub>10</sub> saturated or unsaturated alkyl, halogen-substituted or unsubstituted C<sub>6</sub>-C<sub>60</sub> aryl, carbonyl, carboxyl, ester group, cyano, or an etheralkyl.
Resumen de: EP4672392A1
A battery cell pressurizing jig related to one example of the present invention comprises a first pressurizing part for pressurizing one surface of a battery cell including an electrode assembly, a pair of lead tabs electrically connected to the electrode assembly, and a cell case surrounding the electrode assembly, and a second pressurizing part disposed to face the first pressurizing part and for pressurizing the other surface of the battery cell, wherein the first pressurizing part comprises a first assembly block portion provided to pressurize an assembly region where the electrode assembly is disposed on one surface of the battery cell, and a pair of first tap block portions each provided to pressurize a pair of lead tab regions including a boundary region between each lead tab and the cell case.
Resumen de: EP4672478A1
Examples of the present application provide a connecting member (233), a battery cell (20), a battery (10), a power consuming apparatus, and a connecting element. The connecting member (233) includes a first connecting element (2331) and a second connecting element (2332) connected to each other. A portion of the first connecting element (2331) and a portion of the second connecting element (2332) are stacked in a thickness direction of the connecting member (233). One of the first connecting element (2331) and the second connecting element (2332) is configured to be connected to a tab. The other of the first connecting element (2331) and the second connecting element (2332) is configured to be connected to an electrode terminal. A thickness of the connecting member (233) at a connecting position (2333) of the first connecting element (2331) and the second connecting element (2332) is less than a sum of maximum thicknesses of the first connecting element (2331) and the second connecting element (2332). According to the connecting member (233), the battery cell (20), the battery (10), the power consuming apparatus, and the connecting element in the examples of the present application, the strength of connection between the first connecting element (2331) and the second connecting element (2332) in the connecting member (233) can be improved.
Resumen de: EP4672433A1
The present application relates to the technical field of batteries. Provided are a battery and an electrical device. The battery comprises at least one column of battery cell units arranged in columns and support members provided in respective battery cell units; amongst the battery cell units in the current column, the heat conductivity of the support member in the battery cell unit at the central position is greater than the heat conductivities of the support members in the battery cell units at outer positions. In the battery provided in the present application, the heat conductivities of the respective support members in the current column are decreasing from the central position to the edge positions, such that the efficiency of transferring heat outwards of the battery cell unit at the central position is higher than that of the battery cell units at the outer positions, resulting in a more uniform working temperature of the battery cells in the current column. When the battery consists of a plurality of columns of battery cells, the heat in the middle of the battery can be transferred to the edge more quickly, such that the working temperature of the middle area of the battery is the same or basically the same as the working temperature of the edge area, thus achieving a more uniform overall working temperature of batteries.
Resumen de: TW202440465A
An aqueous dispersion containing aluminum oxide powder, characterized in that the aluminum oxide powder is present in the form of aggregated primary particles with an aggregate particle size distribution with a median aggregate particle size (D50) of 220 nm to 500 nm, as determined by dynamic light scattering measurement, and wherein the aluminum oxide powder has a BET of 10 m2/g to 100 m2/g, in an amount of at least 20 wt.%, preferably 40 to 60 wt.%, and more preferably 50 to 60 wt.% based on the total weight of the dispersion, and that the dispersion further comprises: - at least one carboxylic acid from the group consisting of dicarboxylic acids and/or hydroxy tricarboxylic acids having from 2 to 7 carbon atoms, and - at least one amino alcohol having from one to six carbon atoms. preferably DMEA (dimethylethanolamine), 2-Amino-2-Methyl-1-Propanol.
Resumen de: CN120731190A
Alumina powder consisting of aggregates of primary particles, characterized in that it has an aggregate particle size distribution with an aggregate median particle size (D50) of 220 nm to 500 nm, preferably 230 to 400 nm, more preferably 250 nm to 300 nm, as determined by dynamic light scattering measurement, and in that it has a BET of 10 m < 2 >/g to 100 m < 2 >/g, and a method for preparing same.
Resumen de: WO2024175318A1
Disclosed in the present invention is a battery thermal insulation pad, characterised in that the battery thermal insulation pad comprises at least one elastic functional layer (10) and at least one fibrous support layer (20), the elastic functional layer (10) comprising an organic base material and a first filler, the first filler comprising at least one of a heat-absorbing filler or a thermal insulation filler, and combinations thereof; the fibrous support layer (20) comprising a fibrous base material with gaps; wherein the elastic functional layer (10) at least partially fills the gaps of the fibrous base material. The battery thermal insulation pad has excellent thermal insulation performance and has certain elasticity so that it can absorb the pressure caused by the deformation of surrounding components.
Resumen de: EP4672398A1
In an electrode body (20) disclosed herein, a positive electrode (22) with a band shape and a negative electrode (24) with a band shape are stacked in an insulated state and wound in a longitudinal direction (LD). An average of a central part moisture amount and an end part moisture amount in a winding axis (WL) direction is 80 ppm or more and 150 ppm or less and a difference between the central part moisture amount and the end part moisture amount in the winding axis (WL) direction is less than ±20 ppm. A corresponding method of manufacturing is also disclosed.
Resumen de: EP4672396A1
A secondary battery includes: a case having an open side surface; an electrode assembly inserted into the case through the open side surface, the electrode assembly including a bent electrode tab; a terminal electrically connected to the electrode tab of the electrode assembly and exposed to an outside of the case; a cover covering the open side surface of the case; an electrode plate insulating member electrically insulating an electrode plate of the electrode assembly from the terminal; and a bent portion insulating member electrically insulating an inner surface of the cover from the bent portion of the electrode tab.
Resumen de: EP4672367A1
The present invention relates to a positive electrode for a secondary battery and a secondary battery comprising the same, and more particularly to a positive electrode for a secondary battery comprising a first positive electrode layer and a second positive electrode layer.
Resumen de: EP4672461A1
A bracket, a battery cell, a battery, and a power consuming apparatus are provided. The bracket includes: a bracket body, provided with a through hole, where the through hole is used to expose a part of an electrode terminal; and a first guide portion, disposed in the bracket body and configured to guide a conductive portion of an electrode assembly to run through the through hole to be connected to the electrode terminal. The first guide portion is disposed on the bracket body, so that in a process in which the electrode assembly is assembled into a housing of the battery cell, the first guide portion may provide guidance on and protect the conductive portion of the electrode assembly, to enable the conductive portion of the electrode assembly to gradually enter the through hole, thereby reducing a probability that the conductive portion collides with the bracket body, reducing a risk that the electrode assembly fails and is damaged, and improving reliability and stability of the battery cell.
Resumen de: EP4672465A1
Example embodiments of the present invention provide a battery pack. The battery pack includes a pack housing including a base plate and a guide protruding from the base plate, and first and second battery cell assemblies on the base plate, in which each of the first and second battery cell assemblies includes a cell stack including a plurality of battery cells and first and second cross-beams coupled to the cell stack, and the second cross-beam of the first battery cell assembly includes a second assembly window for exposing the guide.
Resumen de: EP4671787A1
Provided is a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus includes a data obtaining unit configured to obtain a first target full-cell profile representing a correspondence between a capacity factor and a voltage of a target cell while a first electric stimulation is being applied to the target cell, and a control circuit configured to generate an estimated full-cell profile based on the first target full-cell profile and an overpotential profile. The control circuit determines a first performance factor group as a primary estimation result for charge/discharge performance of the target cell by applying a cell diagnosis logic to the estimated full-cell profile. The control circuit determines a second performance factor group as a secondary estimation result for the charge/discharge performance of the target cell by applying a factor correction model to the first performance factor group. The second performance factor group includes an estimation result of a negative electrode scaling factor of the target cell.
Resumen de: EP4672451A1
Disclosed is a battery pack including an electrode assembly, an electrode lead extending from the electrode assembly, and a battery case including a receiving portion configured to receive the electrode assembly and a sealed portion sealed along the edge of the receiving portion, wherein a part of the sealed portion extends to form a handle portion.
Resumen de: EP4672470A1
Embodiments of the present application provide a battery cell, a battery, and a power consuming apparatus. The battery cell includes: a housing, including a first wall, where the first wall is provided with a pressure relief mechanism; an electrode assembly, accommodated in the housing; and a support structure, disposed between the housing and the electrode assembly, where the support structure is used for forming, between the first wall and the electrode assembly, an exhaust channel in communication with the pressure relief mechanism. The embodiments of the present application provide a battery cell, a battery, and a power consuming apparatus, to reduce a probability that non-directional pressure relief occurs in the battery cell.
Resumen de: EP4671205A1
Provided is a carbon nanotube dispersion comprising carbon nanotubes, dispersants and a solvent. The dispersants comprise a first dispersant comprising a first polymer compound containing an amine group, and a second dispersant comprising a second polymer compound containing an aromatic ring. The second dispersant contains aromatic carbon in an amount of 65 mol% or more based on the total number of moles of carbon atoms. The carbon nanotube dispersion according to one embodiment of the present invention can significantly reduce not only the initial viscosity of the carbon nanotube dispersion but also the rate of change in viscosity over time by containing a specific level or more of aromatic carbon in the second dispersant.
Resumen de: EP4672420A1
The present application relates to a secondary battery and an electrical apparatus (4). The secondary battery comprises a positive electrode sheet (122) and a positive tab (121) connected thereto; the positive tab (121) comprises a first current collector (1211) and an anti-overcharge layer (1212), the anti-overcharge layer (1212) being arranged on the surface of the first current collector (1211), and the anti-overcharge layer (1212) comprising an anti-overcharge additive. The cycle performance of the secondary battery can be improved while overcharge prevention is taken into account.
Resumen de: EP4672463A1
Embodiments of the present application provide a battery, an electrical device, and an energy storage device, which is capable of improving the use performance of the battery. The battery includes: a battery cell, a first wall of the battery cell being provided with a pressure relief mechanism; a support component configured to support the battery cell, the support component including a first support component and a second support component that are connected, the first support component and the second support component being located on the same side of the battery cell, the first support component being located between the first wall and the second support component and attached to the first wall, the first support component being provided with a first through hole corresponding to the pressure relief mechanism, and the second support component being provided with a second through hole corresponding to the pressure relief mechanism; and a first protective component, the first protective component being configured to close the second through hole, and the first protective component being configured to be destroyed when the pressure relief mechanism is actuated, so as to allow an emission from the battery cell to pass through the second support component.
Resumen de: EP4672491A2
A power storage device includes a case body, an electrode body, an electrolyte, a positive electrode terminal, a negative electrode terminal, a positive electrode sealing plate, and a negative electrode sealing plate. The case body has two opposed surfaces that are open. The positive electrode sealing plate has a positive electrode attachment hole to which the positive electrode terminal is attached. The positive electrode sealing plate closes one of the two opposed surfaces. The negative electrode sealing plate has a negative electrode attachment hole to which the negative electrode terminal is attached. The negative electrode sealing plate closes another of the two opposed surfaces. The positive electrode sealing plate has a first through hole through which the electrolyte is allowed to be injected. The negative electrode sealing plate has a second through hole through which the electrolyte is allowed to be injected.
Resumen de: EP4671785A1
The present disclosure provides a high-efficiency grading method and system for lithium-ion cells, and a storage medium, and belongs to the technical field of lithium-ion battery manufacturing. The present disclosure aims to solve the problem of excessively long capacity grading time for lithium-ion cells. The high-efficiency grading method includes: obtaining discharge capacities C<sub>1</sub>, discharge endpoint voltages V<sub>1</sub>, rebound voltages V<sub>2</sub>, and remaining capacities C<sub>2</sub> of lithium-ion cells; subjecting data of the obtained discharge capacities C<sub>1</sub> or discharge endpoint voltages V<sub>1</sub> to slicing and classification processing; plotting a scatter plot of the remaining capacities C<sub>2</sub> against the rebound voltages V<sub>2</sub> according to the remaining capacities C<sub>2</sub> and corresponding rebound voltages V<sub>2</sub> of the lithium-ion cells, performing curve fitting, and deriving remaining capacity prediction model equations; and calculating full discharge capacities of a new batch of lithium-ion cells. The present disclosure omits the full discharge step in the conventional grading process, greatly shortening the capacity grading time, improving production efficiency, reducing hardware investment and energy consumption during capacity grading, and lowering battery manufacturing costs.
Nº publicación: EP4672372A1 31/12/2025
Solicitante:
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD [HK]
Contemporary Amperex Technology (Hong Kong) Limited
Resumen de: EP4672372A1
This application provides a positive electrode material composition, a secondary battery, and an electric apparatus. The positive electrode material composition includes a phosphate-based positive electrode material and a ternary positive electrode material, where a weight of the phosphate-based positive electrode material is denoted as W1; a weight of the ternary positive electrode material is denoted as W2; α=W1/(W1+W2), where 50%≤α≤97%, optionally 70%≤α≤90%; and the phosphate-based positive electrode material is a polycrystalline secondary sphere material and/or the ternary positive electrode material is a polycrystalline secondary sphere material. After the phosphate-based positive electrode material and the ternary positive electrode material are mixed, the advantages of the two materials complement each other. In addition, adjusting a ratio of the two materials can achieve a synergistic effect of the two materials, thereby allowing the positive electrode material composition to have the advantages of higher energy density and higher cycling performance. The phosphate-based positive electrode material and/or the ternary positive electrode material is in the form of polycrystalline secondary spheres, which makes full use of the advantage of low bulk diffusion impedance in the polycrystalline secondary spheres, thereby improving the charge capacity and low-temperature discharge capacity of the composition.
BOPI
Sede Electrónica
