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1604
resultados
Última actualización
11/11/2025 [07:13:00]
Resultados 1325 a 1350 de 1604
Resumen de: EP4641701A1
A positive composite for an energy storage device according to an aspect of the present invention includes a positive active material and a conductive auxiliary agent, in which the conductive auxiliary agent includes a carbon nanotube, and, in a Log differential pore volume distribution, a ratio B/A of a maximum value B cm<sup>3</sup>/g of a differential pore volume within a pore size range of 100 nm or more and 3000 nm or less to a maximum value A cm<sup>3</sup>/g of a differential pore volume within a pore size range of 10 nm or more and 100 nm or less is 4.50 or more.
Resumen de: EP4641669A1
Provided are a silicon-carbon battery cell for a power tool, a battery pack, an energy storage device, a power tool, and a charger for a battery pack. The silicon-carbon battery cell includes: a positive electrode plate (1311); a negative electrode plate (1312) including a silicon material, a carbon material, and a binder; and an electrolyte (1314) disposed between the negative electrode plate (1312) and the positive electrode plate (1311). The binder includes polyacrylic acid and styrene-butadiene rubber.
Resumen de: EP4641677A1
A rechargeable lithium battery includes a positive electrode active material, the positive electrode active material including a first particle containing a compound represented by Formula 1 and having a first average particle diameter, and a second particle containing a compound represented by Formula 2 and having a second average particle diameter larger than the first average particle diameter. Each of the first particle and the second particle has a form of a sphere-shaped secondary particle, and an amount of the first particle is greater than an amount of the second particle. A detailed description of Chemical Formulae 1 and 2 is given in this description.
Resumen de: EP4641655A1
A positive electrode active material comprising first particles comprising a compound having an olivine structure, second particles having a spinel structure, and third particles having a layered structure, where the amount of the third particles is about 10 parts by weight to about 50 parts by weight based on 100 parts by weight of the positive electrode active material is disclosed, along with positive electrodes including the positive electrode active materials and a rechargeable lithium battery including the positive electrodes.
Resumen de: EP4641654A1
A positive electrode active material includes first particles including a compound represented by Chemical Formula 1 having an olivine structure, second particles including a compound represented by Chemical Formula 2 having a spinel structure, and third particles including a compound of Chemical Formula 3 having a layered structure. The first particles and the second particles constitute a main active material of the positive electrode active material, and a content of the main active material is about 95 parts by weight to about 99.5 parts by weight based on about 100 parts by weight of the positive electrode active material. Also disclosed are positive electrodes including the positive electrode active materials, and rechargeable lithium batteries including the same.
Resumen de: EP4641754A1
A battery module according to one embodiment of the present disclosure comprises a battery cell stack including a plurality of first battery cells with at least one second battery cell being inserted between the plurality of first battery cells; a module frame that houses the battery cell stack; and a temperature sensor that is located inside the module frame, and detects whether the plurality of first battery cells and the at least one second battery cell are abnormal or not, wherein the second battery cell has a resistance smaller than that of the first battery cell.
Resumen de: EP4641776A1
Embodiments of this application provide a battery cell, a battery, and an electric device. The battery cell includes a housing, an electrode terminal, and a first connector. The housing includes a first wall portion, and the first wall portion is provided with a lead-out hole running through the first wall portion. The electrode terminal includes a body portion and a flange portion; the body portion is at least partially inserted into the lead-out hole; and along a thickness direction of the first wall portion, the flange portion is connected to one end of the body portion, the flange portion is located on one side of the first wall portion, and the flange portion has a first end surface facing away from the body portion. The electrode terminal is provided with a groove, and the groove has a first groove side surface connected to the first end surface. The first connector is welded to the electrode terminal to form a weld mark portion, and a portion of the first groove side surface located in the flange portion does not contact the weld mark portion. In this way, the first connector is not welded to the portion, whose dimensional accuracy is difficult to control, of the first groove side surface located in the flange portion, effectively improving the welding quality between the first connector and the electrode terminal, and improving the reliability of the battery cell.
Resumen de: EP4641867A1
An operation control device according to an embodiment of the present invention is an operation control device of an energy storage system including a battery and linked to a power grid, and comprises: at least one processor; and a memory for storing at least one command executed through the at least one processor, wherein the at least one command may include commands for: in a state where power supply from the power grid is possible, configuring a power price linkage mode according to selection of an operator or a user; setting reference power for an inverter of the energy storage system according to the power price linkage mode; and transmitting the set reference power for the inverter to the inverter, and in the power price linkage mode, the charging and discharging of the energy storage system may be controlled according to the power price provided by the power grid.
Resumen de: EP4641760A1
A battery pack includes a battery box (100), a cylindrical battery (200) disposed in the battery box (100), a cooling plate (300) and a heating film (400). The cylindrical battery (200) has first and second end faces (210, 220), and an outer circumferential face connected therbetween. The cooling plate (300) has a first surface (310) facing towards the first end face (210); a heating film (400) is disposed on the first surface (310) and between the cooling plate (300) and the first end face (210); the heating film (400) has a penetrating structure (410). The front projection pattern of the first end face (210) partially overlaps the front projection pattern of the penetrating structure (410) on a reference plane parallel to the first surface (310). The penetrating structure (410) is adapted for heat-conducting connection of the first end face (210) to the cooling plate (300).
Resumen de: EP4641775A1
A battery housing assembly includes: a battery housing (10) provided with a pole through hole (11); and a first pole structure (30), wherein a part of the first pole structure penetrates through the pole through hole inside, and the first pole structure includes a copper layer (31) and an aluminum layer (32), wherein the first pole structure includes a connection section (33), a limiting section (34) and a protruding section (37), the limiting section is connected to a circumferential outer surface of the connection section, the protruding section is provided protruding from the connection section, the limiting section and the protruding section are formed with a step (35), and, along a direction X in which the pole through hole penetrates through the battery housing, a minimum thickness of the copper layer included in the protruding section is a, a height of the step is b, and 0.025≤a/b≤1.33.
Resumen de: EP4641758A1
A battery pack is provided, the battery pack including a box (10), at least one battery row (20), a heat exchange plate (30), a bus member (40) and a limit plate (50); the axis of a plurality of cylindrical batteries (21) of the battery row (20) is parallel to the bottom of the battery box (10); the bus member (40) is configured for electrically connecting the plurality of cylindrical batteries (21); the limit plate (50) is configured for limiting the battery; wherein a peripheral wall (203) located between a first end wall (201) of the cylindrical battery (21) and a second end wall (202) of the cylindrical battery (21); the heat exchange plate (30) is disposed opposite to the first end wall (201); the bus member (40) is disposed opposite to the second end wall (202); and the limit plate (50) is disposed opposite to the peripheral wall (203).
Resumen de: EP4641668A1
This application relates to a positive electrode active material, a preparation method thereof, a positive electrode plate, a secondary battery, and an electric apparatus. The positive electrode active material includes: a core and a first coating layer applied on at least a portion of an outer surface of the core, the core includes a lithium-containing nickel-based transition metal oxide, and the first coating layer includes cerium element. In the lithium-containing nickel-based transition metal oxide, a molar proportion of nickel element among all elements excluding lithium element and oxygen element ranges from 50% to 100%.
Resumen de: EP4640746A1
A binder, including a polyamide polymer containing repeating structural units A shown in formula (I) and repeating structural units B shown in formula (II), in which R<sub>1</sub> is an aryl group not containing amide groups and amino groups, R<sub>2</sub> includes an aryl group containing at least one amide groups or at least one amino groups, and a mole ratio of the repeating structural units A to the repeating structural units B is (2: 1) to (6:1).
Resumen de: EP4641821A1
Some embodiments of this application provide a battery cell, a battery, and an electric device, where the battery cell includes a first wall, an electrode terminal, and a separation component; the electrode terminal is mounted on the first wall; at least part of the separation component is disposed between the first wall and the electrode terminal; and at least a partial structure of the separation component has a yield strength Q1, where Q1 satisfies: Q1≥30 MPa. In some embodiments of this application, a yield strength of at least a partial structure of the separation component is set to be not less than 30 MPa, reducing a risk that the separation component is completely crushed during processing of the electrode terminal, improving a yield rate of the separation component after the battery cell is manufactured, reducing a risk of direct contact between the electrode terminal and the first wall, and improving safety of the battery cell.
Resumen de: EP4641709A1
This application provides a current collector with a coating, a secondary battery, a battery module, a battery pack, and an electrical device. The coating includes at least a surface modification layer. The coating is formed on at least one side of the current collector. A thickness of the surface modification layer is not greater than 50 nm. The coating formed on at least one side of the current collector can effectively block direct contact between a negative electrode metal and an electrolyte solution constituent, thereby reducing side reactions between the negative electrode metal and the electrolyte solution, significantly reducing gas generated by the battery during a long period of cycling, and improving the cycle performance and safety of the battery.
Resumen de: EP4641738A1
An electrolyte for a sodium-ion secondary battery, a sodium-ion secondary battery, and an electric apparatus. The electrolyte for the sodium-ion secondary battery comprises a metal sodium salt and a solvent, wherein the desolvation energy of a sodium ion-solvent complex formed by sodium ions of the metal sodium salt and the solvent is less than or equal to 100 kJ/mol. In this way, the reaction kinetics of the sodium-ion secondary battery at a low temperature can be improved, and the low-temperature performance of the sodium-ion secondary battery is improved.
Resumen de: EP4641676A1
A positive electrode active material, a positive electrode including the positive electrode active material, and a rechargeable lithium battery including the positive electrode are provided. The positive electrode active material includes first particles comprising a compound of Li<sub>a1</sub>Fe<sub>x1</sub>B<sup>1</sup><sub>y1</sub>PO<sub>4-b1</sub> and having an olivine structure, second particles comprising a compound of Li<sub>a2</sub>Mn<sub>x2</sub>C<sup>1</sup><sub>y2</sub>O<sub>4-b2</sub> and having a spinel structure and third particles comprising a compound of Li<sub>a3</sub>CO<sub>x3</sub>D<sup>1</sup><sub>y3</sub>O<sub>4-b3</sub>. The first particles and the second particles constitute a main active material, and the content (e.g., amount) of the main active material is about 95 parts by weight to about 99.5 parts by weight on the basis of about 100 parts by weight of the positive electrode active material.
Resumen de: EP4641736A1
A secondary battery and an electric device. The secondary battery includes a negative electrode sheet and an electrolyte, where the negative electrode sheet includes a negative electrode current collector and a negative electrode active layer located on at least one surface of the negative electrode current collector, the negative electrode active layer includes graphite, and the areal density of the negative electrode active layer is 0.09 mg/mm<sup>2</sup> to 0.16 mg/mm<sup>2</sup>; the lithium ion conductivity of the electrolyte at 25°C is 10 mS/cm to 20 mS/cm; and the electrolyte includes a first solvent, the first solvent having a general structural formula of R1-COO-R2, where R1 and R2 are each independently selected from any one of C1-C5 alkyl and C1-C5 haloalkyl.
Resumen de: EP4641720A1
The present application discloses a battery and an electric device, the battery includes a plurality of first battery cells, each first battery cell includes a plurality of side walls, the plurality of side walls include a first side wall and a second side wall connected to each other and forming an included angle, the first side wall is the side wall of the first battery cell with the largest area, each first battery cell is disposed opposite to at least one first side wall and at least one second side wall in a plurality of adjacent first battery cells, and two oppositely disposed first side walls of adjacent first battery cells are disposed in a staggered manner.
Resumen de: EP4641879A1
The present invention provides a battery pack including a first and second battery module groups, a battery pack positive terminal connected to a positive terminal of the second battery module group and connected to an output of an external charging system, a battery pack negative terminal to which a negative terminal of the first battery module group is connected, first and second switches respectively provided on paths between positive terminals and negative terminals of the first and second battery module groups to open and close parallel connection paths of the first and second battery module groups, and a third switch provided between the first and second battery module groups and provided on a path between the positive terminal of the first battery module group and the negative terminal of the second battery module group to open and close a serial connection path of the first and second battery module groups, a charging method thereof, and an electric vehicle having the same.
Resumen de: EP4641786A1
The present application relates to the technical field of batteries, and provides a battery pack and an electrical apparatus. The battery pack includes a housing, a cell module and a structural component. At least a portion of the cell module is accommodated within the housing, and the cell module includes a plurality of battery cells disposed in a stacked manner along a first direction. The structural component is arranged along the first direction with the cell module. The structural component includes a plurality of side walls, the plurality of side walls are sequentially disposed along the first direction with the cell module, a connecting portion is connected between every two adjacent side walls, a flexural modulus of each connecting portion is smaller than flexural moduli of two side walls connected to the connecting portion, the plurality of side walls include a first side wall and a second side wall, the first side wall is fixedly connected to the housing, and the second side wall is connected to the cell module. This battery pack may provide expansion space for the battery cells through the structural component, and may also constrain the expansion of the battery cells, thereby contributing to improving the use safety and service life of the battery pack.
Resumen de: EP4641749A2
A battery management apparatus according to an embodiment of the present disclosure includes a profile obtaining unit configured to obtain a battery profile and a differential profile based on voltage and capacity of a battery; a control unit configured to generate a comparison full-cell profile and a comparison differential profile based on a preset reference positive electrode profile and a preset reference negative electrode profile, adjust the reference positive electrode profile and the reference negative electrode profile so that the comparison full-cell profile and the comparison differential profile correspond to the battery profile and the differential profile, respectively, and determine an adjustment positive electrode profile and an adjustment negative electrode profile according to the adjustment result as a positive electrode profile and a negative electrode profile of the battery, respectively.
Resumen de: EP4641727A1
A lithium battery, comprising a positive electrode and a negative electrode, wherein a negative electrode material layer of the negative electrode comprises a lithium-silicon composite negative electrode active material, and when the lithium battery is charged to 100% SOC, the lithium-silicon composite negative electrode active material comprises a lithium-silicon alloy Li<sub>4.4</sub>Si and elemental lithium; and the positive electrode comprises a first positive electrode active material and a second positive electrode active material, wherein the first positive electrode active material contains lithium, and the second positive electrode active material comprises elemental sulfur and/or a sulfur-containing compound. Further provided in the present application are a preparation method and a control method for the lithium battery, a battery system comprising the lithium battery, and an electric vehicle.
Resumen de: EP4641735A1
There is provided a non-aqueous electrolyte solution that reduces acid and/or moisture to decrease gas generation under high temperature conditions in order to suppress degradation in battery characteristics. An acid or moisture reducing agent for the non-aqueous electrolyte solution of the present disclosure includes a diisocyanate compound represented by Formula (1), (2) or (3), wherein the non-aqueous electrolyte solution includes a fluorine atom-containing cyclic carbonate:
Nº publicación: EP4641755A1 29/10/2025
Solicitante:
SVOLT ENERGY TECH CO LTD [CN]
SVOLT Energy Technology Co., Ltd
Resumen de: EP4641755A1
The present application relates to the field of battery pack technology, particularly to a battery pack anti-condensation structure and its manufacturing method. The structure includes: a housing comprising a first plane, a second plane, and a first cavity; an ejector pin disposed in the first cavity and connected to the second plane; and a moisture absorption portion disposed on the first plane and configured to absorb water vapor. The breathable membrane, coated with a PU waterproof coating fabric on its surface, can prevent water vapor from entering the battery pack from the outside. Meanwhile, the moisture absorbent material adhered to the surface of the inner flame-arresting mesh can absorb water vapor inside the battery pack. When thermal runaway is triggered, the adhesive layer on the moisture-absorbing foam surface fails due to high temperature, causing the moisture absorbent material to separate from the inner flame-arresting mesh, which does not affect the post-burst ventilation and flame-arresting performance. This improves the anti-corrosion and insulation performance of the battery pack, thereby enhancing the safety performance of the battery pack.
BOPI
Sede Electrónica
