Alerta

SILICON DIOXIDE AEROGEL HEAT INSULATION PAD, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4830922A1

The present disclosure relates to the technical field of battery thermal insulation pads, and provides a silica aerogel thermal insulation pad, a preparation method and use thereof. In the present disclosure, the preparation method includes: mixing a silicon source, an alcoholic solvent, water and an acidic catalyst to obtain a silica sol; mixing the silica sol, an alkaline catalyst and an additive, and compounding a resulting mixed sol with a fiber sheet to obtain a composite wet gel fiber sheet; subjecting the composite wet gel fiber sheet to aging modification, and then drying, pre-pressing and hot press molding in sequence to obtain the silica aerogel thermal insulation pad. The silica aerogel thermal insulation pad according to the present disclosure exhibits strong thermal insulation ability, good high-temperature resistance, good impact resistance and strong compression deformation resistance, and could avoid extrusion deformation of the automobile battery pack, thereby providing more reliable thermal insulation effect, effectively reducing unnecessary impact and heat transfer to the battery pack, improving the safety and durability of the automobile battery, and reducing the cost of maintenance and replacement.

LITHIUM-ION BATTERY

Resumen de: EP4832131A1

0001 Disclosed is a lithium-ion battery. The battery includes a positive electrode plate and a negative electrode plate. The lithium iron phosphate material (LFP) in the positive electrode plate is a blend of small and large particles with different particle sizes. The negative electrode plate features a dual-layer coating design, where the first graphite particles with a small particle size are used in the upper layer, and the second graphite particles with a large particle size are used in the lower layer. The combination of the positive electrode plate and the dual-layer coated negative electrode plate enables the lithium-ion battery to have a higher energy density and good fast-charging performance, rate performance, and high-temperature storage performance.

BATTERY APPATATUS AND ELECTRIC DEVICE

Resumen de: EP4832060A1

0001 The present application relates to the field of battery technologies, and provides a battery apparatus and a power consuming apparatus. The battery apparatus includes: a battery box, including a lower box body, where the lower box body includes a bottom plate and a box body frame connected to the bottom plate, and an accommodating cavity is defined between the bottom plate and the box body frame; a battery cell, accommodated in the accommodating cavity; and a pressure relief mechanism, where an avoidance cavity is provided on a side of the box body frame that faces away from the accommodating cavity, the avoidance cavity has an avoidance notch, the box body frame is provided with a first hole, the first hole communicates with the accommodating cavity and the avoidance cavity, and the pressure relief mechanism is disposed in the avoidance cavity and blocks the first hole. Through the technical solutions of the present application, a space occupied by the pressure relief mechanism outside the battery box can be reduced, so that impact on a user interface can be reduced.

HOUSING OF TEMPERATURE SENSOR, TEMPERATURE SENSOR, BATTERY, AND ELECTRIC APPARATUS

Resumen de: EP4831601A1

The present application discloses a housing of a temperature sensor, a temperature sensor, a battery, and an electric apparatus. The housing of a temperature sensor comprises: a body portion, wherein an accommodating space is formed inside the body portion, an opening is formed in one end of the body portion, and the opening is communicated with the accommodating space; and a connecting portion located outside the body portion and connected to the body portion, wherein the connecting portion and the body portion jointly define a slot structure, a connecting structure is formed on the inner surface of the wall of the slot, and the connecting structure is used for limiting the movement of the body portion in the insertion direction of the slot structure. The slot structure of the housing is connected to a tab by means of insertion, and a part of the tab is located in the slot. Compared with the structure in which the housing is mounted on one side of the tab, the mounting space on two sides of the tab can be fully utilized to mount the housing, so as to save the mounting space.

Method for recovering elemental phosphorus from iron phosphate via vacuum silicothermic reduction

Resumen de: GB2705689A

Provided is a method for recovering elemental phosphorus from iron phosphate via vacuum silicothermic reduction. First, iron phosphate produced after lithium extraction from lithium iron phosphate is crushed, ground and mixed with a silicon powder, with a molar ratio of Si to FePO4 in the feed being 1.25-3:1. After mixing uniformly, a resulting mixed material is compacted under a pressure of 20-100 MPa to form a block, placed in a drying oven at a temperature of 110-130°C for 4-7 hours. The dried block is charged in a vacuum reduction furnace. A vacuum pump was turned on to evacuate a resulting system to a pressure of 1-1000 Pa, and temperature is increased from room temperature to 400-600°C at a heating rate of 15-20°C/minute and the resulting system is held at the temperature for 30-90 minutes. The residue obtained after the reduction smelting is cooled to obtain a reduction slag, and condensing a resulting reduced volatile to obtain the elemental phosphorus, with a temperature of a condenser being 25-35°C. Figure 1

POSITIVE POLE PIECE, PREPARATION METHOD, SECONDARY BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4832069A1

0001 A positive pole piece and a preparation method therefor, and a secondary battery. The positive pole piece comprises a current collector and a positive electrode active layer. The positive electrode active layer is arranged on at least one surface of the current collector. The positive electrode active layer comprises a first positive electrode active layer at least formed on the current collector, and a second positive electrode active layer formed on the side of the first positive electrode active layer away from the current collector. The first positive electrode active layer comprises lithium iron phosphate particles, and the second positive electrode active layer comprises lithium nickel cobalt manganate particles; or, the first positive electrode active layer comprises lithium nickel cobalt manganate particles, and the second positive electrode active layer comprises lithium iron phosphate particles. The primary average particle size of the lithium iron phosphate particles is 500-3000 nm, and the specific surface area BET of the lithium iron phosphate particles is 3m<2>/g-8m<2>/g. The positive pole piece can reduce gas production when coating the upper and lower layers of the lithium iron phosphate particles and the lithium nickel cobalt manganate particles, and also has good gram capacity.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: EP4832073A1

0001 Provided in the present disclosure is a secondary battery comprising a negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode current collector and a negative electrode film layer disposed on at least one surface of the negative electrode current collector. The negative electrode film layer is provided with a first surface away from the negative electrode current collector and a second surface arranged opposite to the first surface, the thickness of the negative electrode film layer is marked as H. A region with in a thickness range from the first surface to 0.3 H of the negative electrode film layer is marked as the first region of the negative electrode film layer, and a region within a thickness range from the second surface to 0.3 H of the negative electrode film layer is marked as the second region of the negative electrode film layer. The first region comprises a first negative electrode active material, and the second region comprises a second negative electrode active material. The first negative electrode active material comprises primary particles of first artificial graphite, the first negative electrode active material has a powder OI value of 3-6, a graphitization degree of 91-93.5%. The second negative electrode active material has a capacity per gram greater than that of the first negative electrode active material.

POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF, POSITIVE POLE PIECE, SECONDARY BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4832112A1

0001 A positive electrode active material, the positive electrode active material comprises lithium iron phosphate particles and lithium nickel cobalt manganate particles, wherein the primary average particle size of the lithium iron phosphate particles is 500-3000 nm, the specific surface area BET of the lithium iron phosphate particles is 3m<2>/g-8m<2>/g, and the specific surface area BET of the lithium nickel cobalt manganate particles is 0.4m<2>/g-2.0m<2>/g. The positive electrode active material has good processability, and also has good gram capacity

ELECTRODE PIECE, ELECTRODE CORE, BATTERY, AND POWER DEVICE

Resumen de: EP4832063A1

Disclosed are an electrode sheet, an electrode core, a battery, and a power device. The electrode sheet includes a current collector and a coating layer stacked on a surface of the current collector. A portion of the current collector at an end exposed from the coating layer is formed as a tab, and a foil piece is disposed on the tab, where a ratio of a thickness of the foil piece to a thickness of the current collector is not greater than 5.

BATTERY MODULE, BATTERY AND ELECTRICAL DEVICE

Resumen de: EP4832164A1

0001 The present application relates to a battery module, a battery and an electronical device. The battery module (20) comprises battery cells (21), cooling plates (22), and protective members (24). The battery cells (21) are arranged in intervals in a first direction (X); and each cooling plate (22) is arranged between two adjacent batteries (21) in the first direction (X), the two adjacent battery cells (21) and at least one side of the periphery of the cooling plate (22) located therebetween can jointly define an accommodating space (23), and the protective member (24) covers at least the at least one side of the cooling plate (22) that defines the accommodating space (23). When thermal runaway occurs to a battery cell (21), the protective member (24) can prevent a gas, particles, etc., generated during thermal runaway of the battery cell (21) from entering the accommodating space (23) and acting on the cooing plate (22), thereby reducing the probability of damage to or even failure of the cooling plate (22), and thus the cooling plate (22) can be effectively protected. In addition, the protective members (24) can also protect the cooling plates (22) during the assembly of the battery module (20), and reduce the probability of impurities such as particles entering the accommodating space (23) and damaging the cooling plates (22), resulting in the damage to or even failure of the cooling plates (22).

THERMAL MANAGEMENT METHOD AND APPARATUS FOR VEHICLE DURING CHARGING, AND DEVICE

Resumen de: EP4830986A1

0001 A thermal management method for a vehicle (120) during charging, comprising: in the case where a charging connector of a charging station (110) is connected to a target vehicle, controlling the target vehicle to turn off a vehicle thermal management function (210); acquiring battery temperature information of a battery of the target vehicle (220); and in the case where the battery temperature information indicates that the battery has a cooling demand, controlling the charging connector to supply a coolant to the battery so as to cool the battery (230). The method can adaptively improve the cooling effect on the battery during charging, and reduce the impact of heat generated during charging on the service life of the battery. In addition, also disclosed are an apparatus and a device.

BATTERY, BATTERY MODULE, AND VEHICLE

Resumen de: EP4832125A1

0001 A battery, a battery module, and a vehicle are provided. The battery includes a housing, a battery cell, and two connecting tabs. At least a partial region of the housing is electrically conductive. The battery cell is accommodated in the housing, and the two connecting tabs are respectively electrically connected to two electrodes of the battery cell.

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE, SECONDARY BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4832064A1

A positive electrode material and a preparation method therefor, a positive electrode, a secondary battery, and an electric device. The positive electrode material comprises a core and a shell layer covering the core, wherein the core comprises (Li_aA_d)_1+x(M_1-bE_b)_1-x(O_1-cL_2c)₂, 02.72, and the mass ratio of WO_2.72 in the shell layer is greater than or equal to 90%. The positive electrode material has high charge/discharge energy and excellent electronic conductivity and ionic conductivity, can exhibit good structural stability during battery charge/discharge cycles, and can be used for providing a secondary battery having high capacity, good cycle stability and good rate performance.

LITHIUM ION BATTERY ELECTROLYTE, PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4832136A1

0001 A lithium-ion battery electrolyte, a preparation method and use thereof. The lithium-ion battery electrolyte comprises a lithium salt, an organic solvent and an additive, the organic solvent comprising a nitrile-based solvent. The room temperature conductivity σ of the lithium-ion battery electrolyte satisfies the following relational expression: 15 ≤ (K×ε×γ)/µ ≤ 30, wherein K=0.02-0.07, ε is dielectric constant, γ is mass fraction of nitrile-based solvent in the lithium-ion battery electrolyte, and µ is viscosity of the lithium-ion battery electrolyte at room temperature. The electrolyte can effectively inhibit reductive decomposition of a nitrile-based solvent, and has the characteristic of weak solvation binding energy, and still has relatively high ionic conductivity at low temperatures, exhibiting relatively good fast-charging performance. Meanwhile, a battery prepared based on said electrolyte has excellent low-temperature capacity retention rate, thereby effectively improving the battery performance such as safety, energy density, power, rate, cycle performance.

INHALATION DEVICE, CONTROL METHOD, AND PROGRAM

Resumen de: EP4832299A2

Problem To provide a mechanism that enables an inhalation device to utilize a battery more adequately. Solution An inhalation device comprising: a generation unit for generating aerosol using a base material containing an aerosol source; a control unit for controlling the operation of the generation unit; and first and second batteries that are independent of each other, wherein the control unit performs control as to which of the first and second batteries is to supply electricity to the generation unit.

SECONDARY BATTERY AND ELECTRONIC APPARATUS

Resumen de: EP4832219A1

0001 Disclosed are a secondary battery and an electronic apparatus. The secondary battery includes a positive electrode plate, a negative electrode plate, and a separator, the separator includes a base film and a coating disposed on at least one surface of the base film, and the coating includes a coating material. The coating is capable of melting and flowing at a temperature greater than or equal to 90°C, a coating weight of the coating on a single side is CW g/m<2>, a density of the coating material is ρ g/cm<3>, a porosity of the base film is P%, a thickness of the base film is H µm, and 50% ≤ CW/(ρ×P×H)×100% ≤ 120%, where 0.9 ≤ ρ ≤ 1.05, 20 ≤ P ≤ 50, and 3 ≤ H ≤ 10. The separator in the secondary battery can improve thermal safety performance of the secondary battery.

LITHIUM-ION BATTERY POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Resumen de: EP4832102A1

0001 A lithium-ion battery positive electrode material, and a preparation method therefor and a use thereof, relating to the technical field of new energy. The lithium-ion battery positive electrode material comprises a lithium layered metal oxide, a perovskite layer and a fast ionic conductor layer from the center to the surface, and the chemical formula of the perovskite layer comprises M'(NiCoMn)O<3>. The designed structure can effectively improve the ionic conductivity and the electronic conductivity of the lithium-ion battery positive electrode material, further reduces the impedance of the lithium-ion battery positive electrode material, provides a wrapping protection effect, and improves the overall cycle performance and rate capability of the lithium-ion battery positive electrode material. Also provided are a preparation method for the lithium-ion battery positive electrode material and a use of the lithium-ion battery positive electrode material.

BATTERY UNIT STRUCTURE AND VEHICLE INCLUDING SAME

Resumen de: EP4832201A2

The present disclosure discloses a battery unit structure in which a venting area expands due to rupture caused by increased internal pressure even if an existing venting hole is clogged, thereby discharging gas and preventing ejection of materials and flames.A battery unit structure according to an aspect of the present disclosure may include: a battery cell; a battery housing having an accommodation space configured to accommodate the battery cell therein and including a venting portion configured to discharge gas generated from the battery cell on at least one side thereof; and a battery cover configured to cover the battery cell, wherein the venting portion may include: a discharge portion including a venting hole configured to discharge the gas and a rupture portion configured to rupture if internal pressure of the accommodation space reaches a predetermined pressure or more; and a mesh portion positioned to face the accommodation space with the discharge portion therebetween.

GAP FILLER COMPOSITION AND BATTERY PACK

Resumen de: EP4832171A1

A gap filler composition according to embodiments of the present invention comprises a siloxane-based resin, a filler containing thermally conductive inorganic particles and graphite particles, a catalyst, and an amino-silicone-based dispersant. The content of the thermally conductive inorganic particles is 65-95 wt % relative to the total weight of the composition. The content of the graphite particles is 1-20 wt% relative to the total weight of the composition. Provided is a gap filler composition that, by utilizing the amino-silicon-based dispersant and the graphite particles, maintains low specific gravity and possesses enhanced thermal conductivity and viscosity stability A battery pack utilizing the gap filler composition is provided.

LITHIUM IRON PHOSPHATE COMPOSITE PRECURSOR AND PREPARATION METHOD THEREFOR

Resumen de: EP4831119A1

The present invention relates to a lithium iron phosphate composite precursor, which comprises an Li₃Fe₂(PO₄)₃ component and an Fe₂O₃ component, wherein the molar ratio of the main elements of the precursor satisfies the equation: Li:Fe:P = (0.95-1.05): (0.95-1): 1. The present invention further relates to a preparation method for the lithium iron phosphate composite precursor. The preparation method comprises the following steps: (1) solution preparation, involving: preparing an aqueous raw material solution having an Fe content of 60-210 g/L according to the molar ratio of Li:Fe:P=(0.95-1.05):( 0.95-1): 1; and (2) spray pyrolysis, involving: subjecting the aqueous raw material solution to spray pyrolysis in an aerobic environment at 400-800°C, so as to obtain the lithium iron phosphate composite precursor.

DOUBLE-SIDED COATED PARA-ARAMID SEPARATOR AND PREPARATION METHOD THEREFOR

Resumen de: EP4831254A1

The present disclosure discloses a double-sided coated para-aramid separator and a preparation method therefor. The double-sided coated para-aramid separator comprises: a base film and a coating applied on the base film, wherein the coating is obtained by coating a para-aramid slurry. The para-aramid slurry comprises: a fumed powder, a ceramic powder, a first solvent, a styrene-butadiene latex solution, nano-calcium carbonate and a para-aramid polymerization liquid, wherein hydrogen chloride produced when synthesizing para-aramid from para-phenylenediamine and terephthaloyl chloride is removed from the para-aramid polymerization liquid before use, and the fumed powder is one or a mixture of several of fumed alumina, fumed silica and fumed barium titanate. In the present disclosure, a solid space occupying method is used to form pores in the coating, thereby increasing the porosity of the coating, so that the para-aramid separator has a larger porosity and a smaller air permeability value.

NON-AQUEOUS ELECTROLYTE AND SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRICAL DEVICE CONTAINING THE SAME

Resumen de: EP4832139A2

The present application provides a non-aqueous electrolyte and a secondary battery (5), a battery module (4), a battery pack (1) and an electrical device containing the same. The non-aqueous electrolyte includes an electrolyte salt, a non-aqueous solvent, and a first additive, wherein the electrolyte salt includes lithium bis(fluorosulfonyl)imide, lithium tetrafluoroborate, and lithium difluoro(oxalate)borate, and wherein the first additive includes fluoroethylene carbonate, and wherein based on the total mass of the non-aqueous electrolyte, lithium bis(fluorosulfonyl)imide is present in a mass content of A1, lithium tetrafluoroborate is present in a mass content of A2, lithium difluoro(oxalate)borate is present in a mass content of A3, fluoroethylene carbonate is present in a mass content of B1, and A1, A2, A3 and B1 satisfy that: A1 is from 9% to 15%, A1/A2 is from 30 to 1500, A1/B1 is from 3.6 to 15 and A2/A3 is from 0.02 to 30. The present application enables the secondary battery (5) to simultaneously have good cycling performance, storage performance, hot box safety performance and kinetic performance.

BATTERY PACK HAVING IMPROVED SAFETY

Resumen de: EP4832207A2

0001 Disclosed herein relates to a battery pack, wherein the battery pack has the advantage of improving the safety of the battery pack against ignition or explosion by forming a separation space between a base plate and a corresponding battery module due to vaporization of a heat-conducting pad in the event of heat generation or thermal runaway in any of a plurality of battery modules provided therein, thereby inhibiting the propagation of heat from that battery module to adjacent battery modules.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4832216A2

0001 Embodiments of the present application provide a battery cell, a battery and a power consuming device, which relate to the technical field of batteries. The battery cell includes a housing, an electrode assembly, an end cap, and a current collecting member. The housing has an opening. The electrode assembly is accommodated inside the housing. The end cap is connected to the housing and closes the opening. The current collecting member is located inside the housing, is arranged on a side of the electrode assembly facing the end cap, and is connected to the end cap and the electrode assembly. The end cap includes a connecting portion connected to the current collecting member, and in a thickness direction of the end cap, an accommodating groove is provided in a surface of the current collecting member facing the end cap, and the connecting portion is at least partially accommodated in the accommodating groove. The accommodating groove can provide an avoidance space for the connecting portion, thereby decreasing a pressing force of the connecting portion on the current collecting member after the end cap is connected to the housing, reducing the deformation of the current collecting member, reducing the risk of connection failure of the current collecting member and the electrode assembly caused by excessive deformation of the current collecting member subjected to the pressing force from the connecting portion, and improving the stability of the electrical connection be

CURRENT COLLECTOR, COOLING ASSEMBLY, BATTERY, AND ELECTRICAL DEVICE

Nº publicación: EP4832166A1 28/10/2026

Solicitante:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD [CN]
Contemporary Amperex Technology Co., Limited

Resumen de: EP4832166A1

Embodiments of the present disclosure provide a current collector, a cooling assembly, a battery, and an electric device. The current collector is used to connect to a harmonica-shaped tube, and comprises a cover body, supporting ribs, and a supporting elastic piece. The cover body is provided with a first flow channel having a first opening. Multiple supporting ribs are connected to the cover body at intervals, and are located in the first flow channel. A snap-fit groove is formed between the supporting ribs and the cover body, the snap-fit groove being used for containing the harmonica-shaped tube. The supporting clastic piece is connected to the supporting ribs, and at least a portion of the supporting elastic piece extends between two adjacent supporting ribs, the supporting elastic piece being used to support the harmonica-shaped tube.