Resumen de: EP4672548A1
A histogram generation unit generates a histogram of a residence time of a state of charge (SOC) of a battery based on battery data. An actual SOC range calculation unit specifies, as an actual SOC use range, an SOC range that falls within a predetermined appearance probability from the histogram. A recommended SOC range calculation unit calculates a recommended SOC use range in which deterioration is further suppressed than the actual SOC use range while referring to deterioration characteristics of the battery based on the actual SOC use range and a statistical charge and discharge pattern based on the battery data. A charge recommendation degree generation unit generates the charge recommendation degree that increases or decreases in accordance with the SOC of the battery, the charge recommendation degree having a lower limit SOC of the recommended SOC use range as a charge start recommendation value and an upper limit SOC of the recommended SOC use range as a charge end recommendation value.
Resumen de: EP4672358A1
A negative electrode for secondary batteries is provided, the negative electrode being able to be inhibited from swelling.The negative electrode for secondary batteries comprises a negative-electrode current collector and a negative-electrode mix layer disposed on the negative-electrode current collector, and is characterized in that the negative-electrode mix layer comprises a negative-electrode active material, which includes a carbon material and an Si-based material, and an organic compound having a solubility in water of 0.05 g/100 mL or less. The negative electrode is also characterized in that a pore diameter distribution of the negative-electrode mix layer determined by mercury porosimetry has two peaks R1 and R2.
Resumen de: EP4672477A1
In the present invention, a cylindrical battery (10) comprises: an electrode (14); an electrolyte; a bottomed cylindrical outer casing can (16) that accommodates the electrode (14) and the electrolyte; a seal (17) that closes off an opening of the outer casing can (16); and an upper insulating plate (18) that is disposed in between the electrode (14) and the seal (17). The seal (17) is provided with a safety valve. The upper insulating plate (18) includes a base material (50) having a through hole (60), and a film (53) that blocks the through hole (60). The film (53) is constituted from a thermoplastic resin that melts at a lower temperature than the base material (50) does.
Resumen de: EP4672294A1
A first fuse device (40A) includes a narrow portion (414A) that functions as a fuse, and a first wide portion (412A) electrically connected to the narrow portion (414A) and having a cross-sectional area greater than the cross-sectional area of the narrow portion (414A). A first curve (404A) is provided from the outer edge of the narrow portion (414A) to the outer edge of the first wide portion (412A).
Resumen de: EP4672357A1
This application provides a negative electrode plate, a secondary battery, and an electric apparatus. The negative electrode plate includes a current collector and a negative electrode film layer disposed on at least one side of the current collector, where the negative electrode film layer includes one or more active material layers, a negative electrode active material in the negative electrode film layer includes a first graphite negative electrode active material, a BET specific surface area of the first graphite negative electrode active material is denoted as A, and a BET specific surface area of the negative electrode active material in the negative electrode film layer is denoted as B, where A ≤ B, or a BET specific surface area of a material forming the negative electrode film layer is denoted as B', where A < B'.
Resumen de: EP4671460A1
A heat insulation material, a preparation method therefor, a heat insulation member, a heat insulation product, a battery and an electrical apparatus. The heat insulation material may comprise heat insulation powder and reinforced phase fibers, the heat insulation powder being loaded on the surfaces of the reinforced phase fibers; and, in parts by mass, the heat insulation powder may be 25-120 parts, and the reinforced phase fibers may be 0.5-40 parts. The heat insulation material has high compactness, and obviously ameliorates the powder falling phenomenon; and moreover, loading the heat insulation powder on the surfaces of the reinforced phase fibers can reduce the agglomerating space and area of the heat insulation powder, thus reducing the agglomeration of the heat insulation powder, and effectively improving the uniformity of the overall performance of the heat insulation material.
Resumen de: EP4672430A1
Provided in the present invention are an energy storage thermal management system and method. The energy storage thermal management system comprises a controller, a battery, a power electronic device, and a shunting apparatus. The controller determines the operating mode of the energy storage management system, the operating mode being any one of a preset first mode, second mode and third mode; and according to the operating mode of the energy storage thermal management system, controls a corresponding path of the shunting apparatus to be turned on, so that in the first mode, the battery performs heat exchange in a compression cooling mode and the power electronic device performs heat exchange in a liquid-cooled heat exchange mode; in the second mode, the battery and the power electronic device both perform heat exchange in the liquid-cooled heat exchange mode; and in the third mode, the power electronic device and/or an electric heater perform heat exchange with the battery. The present invention can select different heat exchange modes for the battery and the power electronic device according to different operating modes, so as to meet the heat dissipation requirements of the battery and the power electronic device.
Resumen de: EP4671301A1
The present invention discloses a meta-aramid polymer with a grid structure, and a preparation method therefor and use thereof, and belongs to the technical field of lithium battery materials. In the process of forming the meta-aramid polymer, alkyl is introduced among macromolecules through alkylation, such that adjacent molecular chains are linked by a chemical bond so as to form a grid structure. A coating slurry prepared from the meta-aramid polymer with a grid structure, a pore-forming agent and a cosolvent are coated on the surface of a polyolefin porous separator so as to obtain a high-performance lithium battery coated separator. Compared with a coated separator prepared by a traditional method, the coated separator prepared by the present invention has higher heat resistance, thermal shrinkage resistance and puncture strength, has better wettability with an electrolyte, and thus can prolong a cycle life of a battery. The coated separator of the meta-aramid with a grid structure can further improve the oxidation resistance, is beneficial to realizing high potential and improves energy density.
Resumen de: EP4672401A1
The present disclosure relates to a lithium secondary battery improved in an output characteristic, a low-temperature characteristic, and the like. The lithium secondary battery comprises: a positive electrode, a negative electrode, and an electrolyte containing a lithium salt and a non-aqueous organic solvent, wherein the positive electrode includes a positive electrode current collector; and an active material layer that is formed on the positive electrode current collector and includes a positive electrode active material, a conductive material and an oxide-based solid electrolyte having a lithium ion source, and wherein the positive electrode active material and the oxide-based solid electrolyte are dispersed in the active material layer in the form of particles, and the average particle size(D50) of the particles satisfies a fixed ratio.
Resumen de: EP4672375A1
The present invention relates to a cathode active material, a method for producing same, and a cathode and a lithium secondary battery each comprising same, the cathode active material being in the form of a single particle and having an almost unchanged particle size distribution even after rolling, due to the small deformation of particles, wherein the cathode active material comprises a lithium composite transition metal oxide in the form of a single particle, and the lithium composite transition metal oxide comprises Ni, Co, Mn, Al, and M1, in which M1 is at least one selected from Zr, Y, K, Sr, and Ba, and satisfies equation 1. Equation 1 |1-α/β| ≤ 0.1, wherein α is a value of D90-D10)/D50, and β is a value of D<90>-D<10>)/D50 after the cathode active material is rolled at 1,000 kgf/cm2 to 7,000 kgf/cm2.
Resumen de: EP4672362A1
The present invention discloses a preparation method of a silicon-carbon composite material and a silicon-carbon composite material. The preparation method includes: preparing a porous carbon-doped porous copper complex, and depositing nano-silicon on the porous carbon-doped porous copper complex according to a silane pyrolysis method, to obtain the silicon-carbon composite material. The preparation of the porous carbon-doped porous copper complex includes at least operation steps of: S11). uniformly mixing carbon disulfide, activated carbon, and a binder, and pressing an obtained mixture into copper foam to form a sheet-like structure; and S12). transferring the sheet-like structure obtained in the step S11) to a carbonization apparatus, and performing heating and carbonization in an inert atmosphere to obtain the porous carbon-doped porous copper complex. In the present invention, the following obvious defects and problems are significantly alleviated: The nano-silicon cannot be completely deposited in porous carbon when only pure porous carbon is used as a substrate for depositing the nano-silicon, thus affecting expansion and high-temperature preservation performance of the silicon-carbon composite material due to exposure of the nano-silicon; and the use of a pure porous metal for depositing the nano-silicon leads to poor consistency and low efficiency.
Resumen de: EP4671018A1
This application discloses a seat support member mounting structure, a battery pack, and a vehicle. The seat support member mounting structure includes a seat support member and a battery pack housing. The seat support member is connected to the battery pack housing by using a structural adhesive. According to the solutions of this application, the seat support member does not need to be welded to a vehicle body, and safety of the battery pack during collision can be improved. Therefore, the seat support member is particularly suitable for the vehicle body manufactured by using a composite material.
Resumen de: EP4672363A1
The present application discloses a positive electrode active material and a preparation method therefor, a positive electrode sheet, a battery and an electrical apparatus. The positive electrode active material comprises: Na4-xKyFe3-pMq(PO4)2P2O7, wherein M comprises at least one of Ni, Co, Mn, V, Ti, Mo, Nb, W, Cr, Zn, Zr, Ca, Mg, Cu, Sr, Y or Al, 0 < x ≤ 0.4, 0 < y ≤ 0.4, 0 < p ≤ 0.3, and 0 < q ≤ 0.3.
Resumen de: EP4672366A1
The present invention relates to a positive electrode material, a positive electrode for a lithium secondary battery comprising same, and a lithium secondary battery comprising same, wherein the positive electrode material comprises: a first positive electrode active material in the form of a single particle; and a second positive electrode active material in the form of a secondary particle and having a larger average particle diameter (D<sub>50</sub>) than that of the first positive electrode active material, wherein, when a pressure of 6,500 kgf/cm<sup>2</sup> is applied to the positive electrode material, the volume of particles with a particle diameter of 1 µm or less is 10% or less of the total volume of particles present in the positive electrode material.
Resumen de: EP4672480A1
An electrode core assembly (600), a battery cell (1000), a battery pack (2000), and an electric apparatus (3000) are provided. The electrode core assembly includes an electrode core (200) and a current collector plate (100). A first connection region (120) includes a middle portion (122) and a plurality of first connection portions (121) connected to the middle portion. A second connection region (130) is electrically connected to a housing body (500). An area of an orthographic projection of each of the first connection portions on a first plane is S1, a minimum connection area between each of the first connection portions and the electrode core is S, and S≥20%Si.
Resumen de: EP4672431A1
The present application is applicable to the technical field of batteries (100), and provides a battery cell (10), a battery (100), and an electric device. The electric device comprises a battery (100). The battery (100) comprises a battery cell (10). The battery cell (10) comprises an electrode assembly (11) and a heat conduction member (13). The electrode assembly (11) comprises a main body (111) and tabs (112) arranged at one end or two opposite ends of the main body (111). The heat conduction member (13) is at least partially arranged at the end of the main body (111) provided with the tabs (112). By using the technical solution, the heat conduction member (13) implements the heat conduction at the end of the main body (111) close to the tabs (112) in a first direction (Z), so that the problem of the heat at the end of the main body (111) close to the tabs (112) being hard to be conducted out can be effectively mitigated, thereby facilitating implementation of the effect of uniform heat distribution inside the main body (111).
Resumen de: EP4672355A1
The present application relates to the technical field of lithium batteries, and in particular to, a battery cell, a battery, and an electrical device. A positive electrode active material of the battery cell comprises a first lithium-nickel-cobalt-manganese oxide and a second lithium-nickel-cobalt-manganese oxide. A negative electrode active material comprises a silicon-based material and a carbon-based material. A molar content of nickel element in the second lithium-nickel-cobalt-manganese oxide is greater than that of nickel element in the first lithium-nickel-cobalt-manganese oxide among all transition metal elements, wherein the molar content of the nickel element in the second lithium-nickel-cobalt-manganese oxide among all transition metal elements is greater than or equal to 0.8. With the second lithium-nickel-cobalt-manganese oxide with a high nickel element content provided in the positive electrode active material according to the present application, during charging, voids created by shrinkage of a lattice of the second lithium-nickel-cobalt-manganese oxide may store an electrolytic solution squeezed out by expansion of negative electrode silicon, facilitating reflux of the electrolytic solution during a next charge, reducing lithium plating, and improving cycling performance of the battery cell.
Resumen de: EP4672411A1
The present disclosure relates to a non-aqueous electrolyte including lithium salts, an organic solvent, and an additive including a first additive and a second additive. Each of the first additive and the second additive includes a compound represented by a specific Formula.
Resumen de: EP4671591A1
A seal (10) for connecting between oval cross-section pipe sections includes an oval shaped tubular insert (16) having two flat wall sections connected to one another by two end curved sections. The oval shaped tubular insert has a pair of ends with a passage extending through the pair of ends. An elastomeric over-mold (14) is provided on an exterior of the oval shaped tubular insert. The elastomeric over-mold includes a pair of raised seal beads (22) each surrounding a respective one of the pair of ends. The pair of raised beads have a first bead thickness (Y) in a radial direction along the two flat wall sections and a gradually increasing bead thickness (X) from the ends of the flat wall sections to a center of the two end curved sections.
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: 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: GB2642080A
A cell stack (Fig. 2, 200) comprising parallel prismatic cells (Fig. 2, 204) with an end plate 300 adjacent to the endmost cell (Fig. 2, 204n) comprising a first temperature sensor 302 adjacent a middle of a first edge 306 and a second temperature sensor 304 adjacent an edge away from the first edge. The second sensor may be adjacent a corner formed by a second 310 and a third side 308. A third sensor (Fig. 5, 505) may be adjacent a corner formed by the third and a fourth 312 side. The stack - optionally in an electric vehicle (Fig. 1, 100) - may have a temperature regulation plate (Fig. 7, 702) along the longitudinal axis, a terminating plate (Fig. 2, 206) at the opposite end of the stack to the end plate, and a Cell Supervisory Circuit module (Fig. 6, 602) on the end plate in communication with the sensors. A battery assembly may comprise a pair of stacks connected by a bus bar (Fig. 8, 704), optionally engaging the stacks adjacent their end plates. A second bus bar may engage the stacks adjacent the middle. One stack may be inversely oriented relative to the other.
Resumen de: GB2642087A
Apparatus comprising a housing 102 with at least one opening and at least one access window 104 transparent to electromagnetic radiation and disposed on a battery via the at least one opening, and contacting an electrolyte whose parameters are monitored by electromagnetic radiation. The apparatus may comprise an insulating polymeric layer 106. The housing may be metallic, optionally aluminium, aluminium alloy, steel alloy or aluminium layer on polymer. The parameters may be conductivity, ionic diffusion coefficients, ionic concentration, molar thermodynamic factor or transference number. The battery may be on a first surface 108A of a polymeric layer, with the housing and access window on an opposite surface 108B such that the layer functions as a dielectric between the window and housing, and the battery. The radiation may be of Terahertz frequency. A method comprising irradiating a prism with a first electromagnetic radiation which propagates through the prism and is scattered at an edge of the window, detecting a second electromagnetic radiation emanating from the prism, and measuring one or more characteristics of the second electromagnetic radiation. Refractive indices of the prism, window and electrolyte may be calibrated. An alert indicating the health and performance of the battery may be generated.
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.