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SEPARATOR AND ELECTROCHEMICAL DEVICE COMPRISING SAME

Resumen de: EP4601102A2

Provided is a separator which includes: a separator base including a porous polymer substrate having a plurality of pores, and a porous coating layer positioned on at least one surface of the porous polymer substrate and containing a plurality of inorganic particles and a binder polymer positioned on the whole or a part of the surface of the inorganic particles to connect the inorganic particles with one another and fix them; and a porous adhesive layer positioned on at least one surface of the separator base and including polyvinylidene-co-hexafluoropropylene containing vinylidene-derived repeating units and hexafluoropropylene-derived repeating units, wherein the ratio of the number of the hexafluoropropylene (HFP)-derived repeating units (HFP substitution ratio) based on the total number of the vinylidene-derived repeating units and the hexafluoropropylene-derived repeating units is 4.5-9%. An electrochemical device including the separator is also provided.

METHOD FOR SEALING SECONDARY BATTERY

Resumen de: EP4600022A1

The present disclosure provides a method for sealing a secondary battery, which seals an electrode lead and a battery case of the secondary battery, the method comprising the steps of: providing a heater on a front surface of a sealer; providing the electrode lead between an upper sealer and a lower sealer contained in the sealer; heating the electrode lead with the heater; sealing the electrode lead and the battery case with the sealer; photographing the sealer around the heater with a camera disposed on a front surface of the heater to obtain shape information; measuring the temperature of the sealer around the heater with a temperature sensor to obtain temperature information; acquiring thermal expansion data according to the temperature of the sealer using the shape information, the temperature information, and the material information about the sealer; and measuring the temperature of the electrode lead with the temperature sensor and then predicting the thermal expansion value of the sealer at the electrode lead covered by the heater using the thermal expansion data.

LITHIUM SECONDARY BATTERY

Resumen de: EP4601067A1

A lithium secondary battery includes a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material, the positive electrode material includes a lithium transition metal oxide represented by a specific chemical formula, the non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive, the additive includes a first additive and a second additive, the first additive includes a phosphate-based additive having a silyl group, and the second additive includes a compound represented by a specific chemical formula.

SOLID-STATE ELECTROLYTE MEMBRANE, PREPARATION METHOD THEREFOR, ALL-SOLID-STATE BATTERY AND ELECTRICAL APPARATUS

Resumen de: EP4601063A1

A solid-state electrolyte membrane, a preparation method therefor, an all-solid-state battery and an electrical apparatus. The solid-state electrolyte membrane comprises a solid-state electrolyte and a ceramic fiber material dispersed in the solid-state electrolyte; the solid-state electrolyte comprises an inorganic solid-state electrolyte; when the diameter of the ceramic fiber material is denoted as D and the length of the ceramic fiber material is denoted as L, the diameter of the ceramic fiber material and the length of the ceramic fiber material satisfy: L/D ≥ 2. Since the ceramic fiber material is dispersed in the solid-state electrolyte, when the solid-state electrolyte membrane is fractured by the stress generated by electrochemical deposition, the ceramic fiber material around cracks may be pulled out or fractured so as to absorb a large amount of strain energy of the fracture, thus substantially increasing the difficulty of crack propagation, improving the fracture toughness of solid-state electrolyte membranes so as to enhance mechanical properties thereof and inhibit generation of lithium dendrites, and also significantly increasing the critical current density of the solid-state electrolyte membranes.

POSITIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4601050A1

This application provides a positive electrode plate (1) and a preparation method (200) thereof, a battery cell (3), a battery (5), and an electric apparatus (6), belonging to the field of battery technology. The positive electrode plate (1) includes: a positive electrode current collector (10) and a first film layer (11) and a second film layer (12) disposed on the same side of at least one surface of the positive electrode current collector (10); where the first film layer (11) includes a first active material, and the first active material includes at least one of a material with an olivine structure and a material with a spinel structure; the second film layer (12) includes a second active material, and the second active material includes a material with a layered structure; a resistivity R1 of the first active material and a resistivity R2 of the second active material satisfy: 20 ≤ R2/R1 ≤ 500. The technical solution of the embodiment of this application enhances the performance of the battery cell (3).

POLE PIECE, BATTERY CELL, ELECTRODE ASSEMBLY, BATTERY, AND ELECTRICAL DEVICE

Resumen de: EP4601110A1

This application discloses an electrode plate, a battery cell, an electrode assembly, a battery, and an electrical device, and relates to the field of battery technology. The electrode plate includes a current collector. The current collector includes a main body and a plurality of tabs. The main body includes a first edge in a width direction of the main body. The tabs protrude from the first edge. The plurality of tabs are spaced apart along a length direction of the main body. The plurality of tabs include at least one first tab. The first tab includes a first sub-tab and a second sub-tab. A gap exists between the first sub-tab and the second sub-tab. This application weakens the bending strength of the first tab, reduces the difficulty of bending the first tab under pressure, and reduces the risk of excessive deformation of the main body caused by an excessive external force required for bending the first tab under pressure, thereby improving reliability of the battery cell.

BATTERY PACK MANAGEMENT DEVICE AND OPERATION METHOD THEREOF

Resumen de: EP4600677A1

A battery pack management apparatus according to an embodiment disclosed herein includes a communication unit configured to receive voltages of any one battery cell group of a plurality of battery cell groups from each of a plurality of sensors configured to measure voltages of the any one battery cell group and a controller configured to calculate a median of voltages of each of the plurality of battery cell groups, calculate a voltage deviation of a plurality of battery cells of the plurality of battery cell groups with respect to a median of the voltages of each of the plurality of battery cell groups and diagnose whether any one battery cell of the plurality of battery cells is abnormal by comparing the voltage deviation of each of the plurality of battery cells with a threshold value.

POSITIVE ELECTRODE FOR ELECTROLYSIS AND METHOD FOR PRODUCING SAME

Resumen de: EP4600408A1

An anode for electrolysis in which electrolysis performance is less likely to deteriorate even when electric power having a large output fluctuation, such as renewable energy, is used as a power source and in which excellent catalytic activity is stably maintained for a long period of time is provided. The anode for electrolysis 10 includes a conductive substrate 2 in which at least a surface of the conductive substrate 2 is formed of nickel or a nickel-based alloy; and a first layer 4 formed on the surface of the conductive substrate 2, the first layer 4 being capable of functioning as a catalyst layer containing a lithium-containing nickel cobalt oxide represented by a composition formula LixNiyCo2O4 (0.05 ≤ × ≤ 1.0, 1.0 ≤ y ≤ 2.0, 1.0 ≤ z ≤ 2.0, and x + y + z = 2 to 3).

CHARGING CONTROL METHOD AND APPARATUS, AND ELECTRONIC DEVICE

Resumen de: EP4601146A1

This application discloses a charging control method and apparatus, and an electronic device, and pertains to the field of communication technologies. The method includes: in a case that a charger is connected, detecting values of a first flag and a second flag of a charging chip register, where the first flag is used to indicate a charging status, and the second flag is used to indicate a magnitude relationship between a battery voltage and a system voltage; and changing a current charging stage based on a change in a value of at least one of the first flag and the second flag.

CONTROLLING ACCESS BY AN ELECTRIC VEHICLE TO A CONTROLLED-ACCESS AREA

Resumen de: EP4600070A1

Methods, apparatuses, and computer program products for controlling access by an electric vehicle (EV) to a controlled-access area are provided. For example, a computer-implemented method may include receiving data from an EV related to a fire risk in a battery of the EV and determining, using the data received from the EV, whether to allow the EV to enter a controlled-access area.

COMPOSITE MATERIALS AND THEIR USE IN ELECTROCHEMICAL APPLICATIONS AND ELECTRODE COATINGS MADE THEREFROM

Resumen de: WO2025093194A1

The present invention relates to composite materials having an elemental composition consisting of 30 to 70 wt.-% nickel, 5 to 20 wt.-% molybdenum, 2 to 10 wt.-% chromium, 2 to 10 wt.-% X, wherein X represents one or more elements selected from the group cerium, cobalt, copper, gadolinium, lanthanum, lithium, magnesium, niobium, praseodymium, samarium, scandium, strontium, tantalum, titanium, tungsten, ytterbium, yttrium and mixtures thereof, and optionally up to 30 wt.-% oxygen, wherein the balance of the composite metal and metal oxide material is made up of aluminium or zinc or mixtures thereof and inevitable impurities. The invention further relates to the use of the composite materials of the invention in the production of electrochemical catalyst systems, electrodes for energy storage or energy conversion applications. Finally, the present invention relates to electrodes comprising a substrate coated with the composite materials according to the invention.

POSITIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: EP4601046A1

Embodiments of this application provide a positive electrode plate and a preparation method therefor, a battery cell, a battery, and an electric device. The positive electrode plate includes: an active material layer, where the active material layer includes a first active material, a conductive agent, and a binder. The first active material includes a layered transition metal oxide, and the binder includes a flexible binder, configured to bind the first active material and the conductive agent. Performance of a battery including the positive electrode plate is improved.

CYLINDRICAL BATTERY FIXING DEVICE HAVING ENHANCED ATTACHMENT/DETACHMENT FUNCTION

Resumen de: EP4601092A1

Disclosed is a cylindrical battery fixing apparatus including a lower housing formed in the shape of a flat plate, the lower housing having a through-hole configured to allow a cylindrical battery to be vertically inserted therethrough, an upper housing fixed to the top of the lower housing, the upper housing being generally formed in the shape of a column or a triangular prism, the upper housing being provided in a lower end thereof with guide recesses disposed at 120 degree intervals, and three fixing units inserted into the guide recesses of the upper housing, respectively, the fixing units being movable along an upper surface of the lower housing in a direction toward the center of the lower housing, each of the fixing units being provided on a front surface thereof with a fixing jaw configured to be inserted into and fixed to a beading portion of the cylindrical battery, wherein a fixing block is coupled to a rear surface of each of the fixing units, and two or more compression springs are provided between a respective fixing block and the upper housing.

NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE SHEET AND BATTERY

Resumen de: EP4601037A1

Provided are anode material, negative electrode plate and battery. The anode material includes a carbon matrix and a silicon-based active substance; the anode material contains an alkali metal element, an alkaline earth metal element, and an oxygen element, the alkali metal element includes Na and/or K, and the alkaline earth metal element includes Mg and/or Ca; a mass content of the alkali metal element is A ppm, a mass content of the alkaline earth metal element is B ppm, and a mass content of the oxygen element is E%; and the anode material satisfies the following relationship: 1 × 10<-5> ≤ (B/A) × E ≤ 5 × 10<2>. The anode material provided in the present application can enhance the cycling stability of the anode material while increasing the specific capacity of the anode material.

SEPARATOR, SECONDARY BATTERY, AND ELECTRICAL APPARATUS

Resumen de: EP4601104A1

The present application provides a separator, comprising a first base membrane and a second base membrane, wherein the melting point of the second base membrane is lower than the melting point of the first base membrane, and the average fiber filament diameter of the first base membrane is greater than the average fiber filament diameter of the second base membrane. The average fiber filament diameter of the second base membrane is smaller, so that the second base membrane has a richer pore structure, and the tolerance capability of the second base membrane to physical puncture of lithium dendrites is enhanced. In addition, when the average fiber filament diameter of the first base membrane having a high melting point is greater than the average fiber filament diameter of the second base membrane having a low melting point, the continuity and effectiveness of a final separator ion transmission channel can also be guaranteed, thereby improving the reliability of the separator, and improving the reliability of the secondary battery.

BATTERY OF VEHICLE

Resumen de: EP4601094A1

The present disclosure provides a battery of a vehicle, including an interface part, a power part, and an operation part. The interface part includes a first interface surface and a second interface surface. The power part includes a battery body and is connected with the interface part. The operation part is connected with the power part. The interface part includes: a first battery interface adapted to a first peripheral interface, where the first battery interface is mounted on the first interface surface and electrically connected with the battery body; and a second battery interface adapted to a second peripheral interface, where the second battery interface is mounted on the second interface surface and electrically connected with the battery body. The first battery interface is coupled and electrically connected with the first peripheral interface in a battery compartment after the battery is inserted into the battery compartment.

BUSBAR ASSEMBLY AND BATTERY PACK

Resumen de: EP4601106A1

The present disclosure discloses a busbar assembly and a battery pack. The busbar assembly includes: a busbar body provided with a positioning groove and a welding groove, where the welding groove is configured to be welded to a pole terminal of a cell, a spacing is reserved between the positioning groove and the welding groove; a temperature acquisition element adhesively fixed in the positioning groove.

ELECTRODE ASSEMBLY FOR SECONDARY BATTERY AND BATTERY CELL COMPRISING SAME

Resumen de: EP4601109A1

Disclosed are a secondary battery electrode assembly and a battery cell including the same, and more particularly a secondary battery electrode assembly including at least one first electrode including a first electrode current collector and a first electrode tab extending from the first electrode current collector in one direction, at least one second electrode including a second electrode current collector and a second electrode tab extending the second electrode current collector in one direction, a separator interposed between the first electrode and the second electrode, a first electrode lead electrically connected to the first electrode tab, and a second electrode lead electrically connected to the second electrode tab, wherein the first electrode current collector has a first resin layer interposed between a pair of aluminum layers, and a first metal foil is interposed between the first electrode tab and the first electrode lead on at least a part of a region where the first electrode tab and the first electrode lead overlap each other.

NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE SLURRY, AND LITHIUM ION BATTERY

Resumen de: EP4601036A1

The present application relates to an anode material, a preparation method therefor and a lithium-ion battery. The anode material includes a silicon-based active substance and a coating layer located on at least a partial surface of the silicon-based active substance, and the silicon-based active substance includes silicon and a lithium silicate. According to the anode material of the present application, by controlling the type and crystallization degree of the lithium silicate in the material, the storage stability of a negative electrode paste can be improved, the cycle life of the anode material is prolonged, the bonding ability of the anode material and a current collector is increased, the high-temperature storage performance of a cell is improved, and thus the cycle performance of the lithium-ion battery is improved.

POWER SUPPLY DEVICE, METHOD FOR FORMING FILTER DEVICE, AND BATTERY SYSTEM INCLUDING POWER SUPPLY DEVICE

Resumen de: EP4601174A1

A power supply device includes: a primary-side printed circuit board (PCB); a secondary-side PCB insulated from the primary-side PCB; a filter device including a plurality of metal plates disposed between the primary-side PCB and the secondary-side PCB; and a transformer disposed on the filter device, and including a primary-side winding connected to the primary-side PCB and a secondary-side winding connected to the secondary-side PCB.

METHOD FOR PREPARING LITHIUM CARBONATE, LITHIUM CARBONATE PREPARED USING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING POSITIVE ELECTRODE ACTIVE MATERIAL PREPARED USING THE SAME

Resumen de: EP4600224A1

Provided are a method for preparing a lithium carbonate, a lithium carbonate prepared using the same, and a rechargeable lithium battery including a positive electrode active material prepared using the same, and more particularly, to a method for preparing a lithium carbonate, including mixing a lithium nickel-based composite oxide and a coating solution to form a first mixture where the coating solution includes a coating raw material, a precipitant, and a solvent, filtering the first mixture to recover a washing solution containing at least 1000 ppm of lithium, filtering the washing solution, mixing and heating the filtered washing solution and sodium carbonate to form a second mixture, and filtering, washing, and drying the second mixture, wherein the heating is performed at a temperature of about 50 °C to about 80 °C.

HEAT SINK ASSEMBLY

Resumen de: EP4601083A1

A heat sink assembly including a heat sink having a plurality of ribs extending in a longitudinal direction of the heat sink, open first and second end faces at respective first and second longitudinal ends and a flow path for a coolant formed by the ribs. The flow path includes an inlet flow path, at least one outlet flow path and a return flow path. A plurality of first end plugs close the first end face. A second end plug closes the second end face. The second end plug includes a flow guide on the return flow path. The flow path is configured so that a coolant introduced from the first longitudinal end flows along the inlet flow path, along the return flow path by the flow guide into the at least one outlet flow path and then flows to the first longitudinal end.

NEGATIVE ELECTRODE MATERIAL AND BATTERY

Resumen de: EP4601034A1

Provided are anode material and battery. The anode material includes a primary particle. The primary particle includes silicon grains. An average particle size of the silicon grains of the anode material measured at 25 °C is M0 nm. After the anode material is heated to 1000 °C under nitrogen protection and then subjected to temperature holding for 1 h, the average particle size of the silicon grains of the anode material measured at a temperature naturally cooled to 25 °C is M1 nm. A crystallization instability degree of the anode material is F, where F=(M1-M0)/M0, M1> M0, and 0.01≤F≤500. According to the anode material provided in the present disclosure, the problem of stress concentration caused by the primary particle including the silicon grains in a lithium deintercalation process may be attenuated, such that the structure stability of the anode material is improved, and an expansion rate of the material is reduced, thereby improving the electrochemical performance and cycling performance of the anode material.

POWER BATTERY, AND HEALTH EVALUATION METHOD AND HEALTH EVALUATION APPARATUS THEREFOR

Resumen de: EP4601074A1

The present disclosure relates to a power battery, a health evaluation method and a health evaluation device thereof. The power battery includes a cell, an expansion force sensor and an electrode sheet sensor. The cell includes electrode sheets. The expansion force sensor is electrically connected to the cell, and is configured to collect expansion forces at different thickness positions of the cell, and assess a health state of the power battery according to the expansion forces. The electrode sheet sensor is electrically connected to the cell, and is configured to collect the thicknesses of the electrode sheets at different thickness positions of the cell, and assess the health state of the power battery according to the thicknesses of the electrode sheets.

BATTERY TEMPERATURE ADJUSTMENT SYSTEM AND BATTERY TEMPERATURE ADJUSTMENT METHOD

Nº publicación: EP4600082A1 13/08/2025

Solicitante:

TOYOTA MOTOR CO LTD [JP]
TOYOTA JIDOSHA KABUSHIKI KAISHA

Resumen de: EP4600082A1

A battery temperature adjustment system is configured to adjust a temperature of an electricity storage device (100) mounted on a vehicle (1). The battery temperature adjustment system includes a temperature adjustment device (800) configured to adjust a temperature of the electricity storage device (100) and a processor (300) configured to control the temperature adjustment device (800). A setting mode of the temperature adjustment device (800) includes a first mode and a second mode.