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1482
results.
Updated on
11/09/2025 [07:18:00]
Results 725 to 750 of 1482
Absstract of: EP4611138A1
The present disclosure provides a battery box beam, a battery box (1), and a battery module. The battery box beam includes a body wall (7); a first beam wall (8) connected to one end of the body wall (7), and the first beam wall (8) compries a first pressure bearing section (81) disposed opposite to the body wall (7); and a second beam wall (9) connected to another end of the body wall (7), the second beam wall (9) includes a second pressure bearing section (91), and the second pressure bearing section (91) is disposed opposite to the body wall (7) and extends towards and partially overlaps with the first pressure bearing section (81), thereby meeting the requirements of light-weight and strength of the battery module.
Absstract of: EP4609984A1
A jig according to an embodiment of the present disclosure, which is a jig configured to support an electrode that is transferred along a first direction and includes a coated portion coated with an electrode active material and an uncoated portion not coated with the electrode active material, includes a first support unit configured to support an area corresponding to the uncoated portion in the electrode and including a laser receiving portion formed at a position corresponding to an area irradiated with a laser for cutting the uncoated portion; and a second support unit including at least one support roller configured to support an area corresponding to the coated portion in the electrode.
Absstract of: EP4611077A1
Provided is a negative electrode-free battery which includes: a positive electrode; a negative electrode facing the positive electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte, wherein the positive electrode includes a positive electrode active material, the positive electrode active material includes a lithium transition metal oxide, the negative electrode includes a negative electrode current collector for a negative electrode-free battery, the negative electrode current collector for a negative electrode-free battery includes a metal current collecting substrate, the metal current collecting substrate includes a space portion, at least a portion of which is exposed to the outside, and a specific relational formula is satisfied.
Absstract of: EP4611084A1
The present invention relates to an electrode assembly and a secondary battery comprising same. Specifically, in a core part of the electrode assembly in which a negative electrode, a separator, and a positive electrode are sequentially stacked and wound, the negative electrode includes: a negative electrode coated part including a negative electrode current collector and a negative electrode active material layer provided on at least one surface of the negative electrode current collector; and a negative electrode uncoated part including the negative electrode current collector on which the negative electrode active material layer is not provided, wherein the negative electrode uncoated part does not include a negative electrode tab, and the longitudinal length of the negative electrode coated part extending from the longitudinal end of the positive electrode is adjusted to a specific range.
Absstract of: EP4611107A1
The present invention relates to an electrode assembly and a secondary battery comprising same. Specifically, the present invention relates to an electrode assembly and a secondary battery, wherein a negative electrode in a core part of the electrode assembly in which the negative electrode, a separator, and a positive electrode are sequentially stacked and wound includes: a negative electrode coated portion including a negative electrode current collector and a negative electrode active material layer provided on at least one surface of the negative electrode current collector; and a negative electrode uncoated portion including a negative electrode current collector not provided with the negative electrode active material layer, the longitudinal length of the negative electrode coated portion extending from the longitudinal end of the positive electrode being adjusted to a specific range.
Absstract of: EP4611085A1
A cylindrical rechargeable battery is provided that includes: an electrode assembly having an internal space at an innermost side thereof; a cylindrical can accommodating the electrode assembly; and a deformation preventing member that is made of an elastically deformable material. The deformation preventing member is provided with ends spaced apart from each other and such that the deformation preventing member overlaps itself. The deformation preventing member is positioned in the internal space of the electrode assembly and elastically supports the electrode assembly.
Absstract of: EP4611092A1
An electrode assembly, a method for fabricating the electrode assembly, and a secondary battery including the electrode assembly are disclosed. An electrode assembly includes a pair of electrode plates, a separator between the pair of electrode plates, and an electrode tab including a plurality of conductive wires arranged side by side in a width direction, and each of the plurality of conductive wires includes an overlapping part that overlaps an electrode plate of the pair of electrode plates to be bonded to the electrode plate, and a protruding part connected to the overlapping part and protruding to an outside at a boundary of the electrode plates.
Absstract of: EP4611053A1
A positive electrode sheet and a preparation method therefor, and a battery and an electric device. The positive electrode sheet comprises a positive electrode current collector and a positive electrode active material layer, which is arranged on at least one side surface of the positive electrode current collector and comprises a positive electrode active material, wherein the positive electrode active material comprises a sodium-containing positive electrode active material. The thickness of the positive electrode sheet satisfies Dmax/Dmin being 104.5%-300%. After the positive electrode sheet and a negative electrode sheet are assembled into a battery, the thickness of the positive electrode sheet is Dmax when the battery is at 0% SOC, and the thickness of the positive electrode sheet is Dmin when the battery is at 100% SOC. The negative electrode sheet comprises a negative electrode current collector. When the battery is at 100% SOC, at least one side surface of the negative electrode current collector is provided with a sodium metal layer.
Absstract of: EP4611094A1
Provided in the present application is a secondary battery. The secondary battery comprises: a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network crosslinked pore structure; and the electrolyte comprises a cyclic carbonate compound represented by formula I. By means of the cooperation of the three-dimensional network crosslinked pore structure of the silicon-carbon composite material and the cyclic carbonate compound of the electrolyte, the volume effect of an active material during the charging and discharging process is inhibited, the direct current resistance and gas output of the battery are reduced, and the cycle capacity retention rate of the battery is improved.
Absstract of: EP4611062A1
The present application provides a secondary battery and an electrical apparatus. The secondary battery comprises: a negative pole piece and an electrolyte, the negative pole piece comprising a silicon-carbon composite material having a three-dimensional-network cross-linked pore structure; and the electrolyte comprising lithium fluorosulfonyl imide. The three-dimensional-network cross-linked pore structure of the silicon-carbon composite material acts in connect with the lithium fluorosulfonyl imide in the electrolyte to enhance the high-temperature cycle performance and the storage performance of the battery.
Absstract of: EP4611113A1
A battery case, connector, and method of forming are provided. The battery case includes, an outer wall (110), a plurality of first wires internal to the battery enclosure, and a battery connector. The battery connector includes an external connector, a circuit board (150) connected to the external connector (140) on a first side through a hole in the outer wall (110) and connected to the plurality of first wires on a second side opposite the first side, where the circuit board (150) is further bonded to an internal side of the outer wall (110) on a portion of the first side, and a plate (160) bonded to the second side of the circuit board (150) opposite the first side, where the plate (160) completely covers a footprint of the hole in the outer wall (110) through which the external connector (140) attaches to the circuit board, but does not cover connection points for the plurality of first wires.
Absstract of: EP4611061A1
The present application provides a secondary battery (1). The secondary battery (1) comprises: a negative electrode sheet and an electrolyte, wherein the negative electrode sheet comprises a silicon-carbon composite material having a three-dimensional network crosslinked pore structure; and the electrolyte comprises dimethyl carbonate. By means of the cooperation of the three-dimensional network crosslinked pore structure of the silicon-carbon composite material and dimethyl carbonate in the electrolyte, the volume effect of an active material during a charging and discharging process is inhibited, the interface stability is improved, the internal resistance of the battery is reduced, and the cycle capacity retention rate and the charging and discharging performance at a high rate of the battery are improved.
Absstract of: EP4611057A1
The present application discloses a lithium secondary battery and an electric device. The lithium secondary battery comprises a positive electrode sheet and a negative electrode sheet; a positive electrode active material layer comprises a positive electrode active material Li1+aM1bFe1-cAcP1-dEdO4 having a mass ratio of not less than 85 wt%; a negative electrode active material layer comprises graphite having a mass ratio of not less than 85 wt%; the surface density of the positive electrode active material layer located on a single side of the positive electrode sheet is CWc, with a unit of g/1540.25 mm2, and the reversible lithium capacity thereof is Dc, with a unit of mAh/1540.25 mm2; the reversible lithium capacity of the negative electrode active material layer on the side of the negative electrode sheet facing the positive electrode sheet is Da, with a unit of mAh/1540.25 mm2; the initial lithium-intercalation capacity of the negative electrode active material layer on the side of the negative electrode sheet facing away from the positive electrode sheet is Ca, with a unit of mAh/1540.25 mm2; the conductivity of an electrolyte in the lithium secondary battery at 25°C is ρ, with a unit of S/cm; the lithium secondary battery satisfies: Formula 1: 1.0337+0.37 × CWc - 7.79 × ρ ≤ K1 ≤ 1.07+0.93 × CWc - 2.9 × ρ ; and/or, Formula 2: 1.1485+0.43 × CWC - 9.2 × ρ = K2 ≤ 1.13+1.069×CWc - 1.7 × ρ ; wherein, (a).
Absstract of: EP4611101A1
The present application provides an electrolyte, a secondary battery and an electrical apparatus. The electrolyte contains a sodium salt and metal ions having ionic radii greater than that of a sodium ion. The electrolyte can effectively inhibit sodium dendrites, helping to improve the cycle performance and the high-temperature storage performance of batteries.
Absstract of: EP4611156A1
The present application provides a composite separator, a secondary battery, and an electrical apparatus. The composite separator comprises a separator substrate and a polymer coating located on one side of the separator substrate, the sodium ionic conductivity of the composite separator being 0.3 mS/cm-1 mS/cm. The polymer coating helps to reduce the contact between metal deposited on current collectors and electrolytes, thereby reducing side reactions between the metal and the electrolytes, and improving the cycle performance and the storage performance of batteries.
Absstract of: EP4611076A1
The present disclosure relates to a composition for forming an electrode protective layer for a lithium secondary battery, which not only suppresses heat generation or ignition caused by external impacts, etc., and thus has excellent stability, but also makes it possible to provide electrodes and batteries having excellent conductivity and rate characteristics, and to an electrode for a lithium secondary battery and a lithium secondary battery comprising the same.
Absstract of: EP4611166A1
The present invention relates to a pouch cell in which a gas inside a pouch is discharged to the outside of the pouch to delay or prevent an occurrence of a venting phenomenon of the pouch by the internal gas occurring in a charging or discharging process of the pouch cell.The pouch cell includes an electrode assembly, a pouch configured to accommodate the electrode assembly, an electrode lead electrically connected to the electrode assembly to protrude to the outside of the pouch, a pair of lead films including a central portion, which covers a portion of the electrode lead on each of both surfaces of the electrode lead, and an outer portion disposed on each of both sides of the central portion so that the pouch and the electrode lead are insulated from each other, and a passage member disposed between the pair of lead films and attached to the outer portion, wherein, when a pressure inside the pouch increases above a set pressure, a gas moving path is provided between the passage member and each of the lead films.
Absstract of: EP4611064A1
Embodiments of this application relate to a positive electrode active material, a positive electrode plate, a secondary battery, and an electric device. The positive electrode active material includes a first active material and a second active material. The first active material includes a compound having a molecular formula of Li<sub>1+x</sub>Fe<sub>1-y</sub>A<sub>y</sub>P<sub>1-z</sub>Q<sub>z</sub>O<sub>4</sub> and a modified compound thereof. The second active material includes a compound having a molecular formula of Li<sub>h</sub>Ni<sub>j</sub>Co<sub>k</sub>M1<sub>d</sub>M2<sub>e</sub>O<sub>f</sub>R<sub>g</sub> and a modified compound thereof. The embodiments of this application can improve capacity utilization and cycle performance of a secondary battery.
Absstract of: EP4611130A1
This application discloses a battery cell, a battery, and a power-consuming apparatus. The battery cell includes a housing, a first insulating film, and an adhesive layer. The housing includes a first part and a second part, the first part is connected to the second part, and a surface energy of the second part is greater than a surface energy of the first part. The first insulating film covers at least one part of the housing. The adhesive layer is disposed between the second part and the first insulating film and configured to connect the first insulating film to the second part. Technical solutions provided in this application can improve reliability of the battery.
Absstract of: EP4611127A1
A battery pack may include a plurality of battery cells stacked in a first direction in a vertical coordinate system defined by the first direction, a second direction, and a third direction that are perpendicular to one another, and a pack case configured to accommodate the plurality of battery cells at an inner space therein. Additionally, the pack case may include an upper case and a lower case. Further, the lower case may include the inner space for accommodating the plurality of battery cells, and in which the upper case may include a first heat sink extending in the first direction.
Absstract of: EP4611126A1
A battery pack may include a plurality of battery cells stacked in a first direction in a vertical coordinate system defined by the first direction, a second direction, and a third direction that are perpendicular to one another, and a pack case configured to accommodate the plurality of battery cells at an inner space therein. In addition, the pack case may include a pair of first outer walls extending in the first direction, a pair of second outer walls extending in the second direction, the pair of first outer walls and the pair of second outer walls defining the inner space of the pack case, a longitudinal beam provided between the pair of first outer walls and extending parallel to the pair of first outer walls, and a bottom part provided below the pair of first outer walls, the pair of second outer walls, and the longitudinal beam.
Absstract of: EP4611067A1
The present invention relates to a lithium silicon oxide in which gas generation is suppressed when an aqueous slurry is applied, a negative electrode comprising same, and a lithium secondary battery comprising the negative electrode. In a <sup>29</sup>Si NMR spectrum obtained through <sup>29</sup>Si solid state magic angle spinning (MAS) NMR measuring, the lithium silicon oxide has, within a range of -88 to -99 ppm, a first peak having a width of 0.2 to 2.0 ppm and a second peak having a width of 3 to 10 ppm, wherein the ratio of the integral of the first peak to the integral of the second peak (first peak/second peak) is greater than 0.22 and less than or equal to 0.31.
Absstract of: EP4610286A1
The present application provides a polymer and a preparation method therefor, a positive electrode, a secondary battery, and an electrical device. The polymer includes a first polymer. The first polymer includes a structural unit represented by formula (1), where in formula (1), R<sub>11</sub>, R<sub>12</sub>, and R<sub>13</sub> each independently include a hydrogen atom or a substituted or unsubstituted C1-C5 alkyl group; and when substituted, the substituent includes a halogen atom.
Absstract of: EP4611155A1
The present application provides a separator, including: a first porous base membrane and a second porous base membrane; a melting point of the first porous base membrane being higher than a melting point of the second porous base membrane; and in a cross-section in a thickness direction of the separator, an average pore area of the first porous base membrane being greater than an average pore area of the second porous base membrane. The separator can have both the air permeability and mechanical strength, thereby improving the reliability and cycle performance of the separator.
Nº publicación: EP4611118A1 03/09/2025
Applicant:
BYD CO LTD [CN]
BYD Company Limited
Absstract of: EP4611118A1
The present disclosure discloses a temperature regulation member, a battery assembly, and a vehicle. The temperature regulation member includes a thermally conductive plate and a heating film. Each of two sides of the thermally conductive plate in a thickness direction is provided with the heating film. The heating film is configured to heat a battery core. According to the temperature regulation member in embodiments of the present disclosure, the temperature regulation member includes the thermally conductive plate and the heating film, the heating film is configured to heat the battery core, and each of the two sides of the thermally conductive plate in the thickness direction is provided with the heating film. In this way, a heating area of the temperature regulation member can be increased, so that the temperature regulation member has relatively high heating efficiency, thereby improving heating efficiency for the battery core.
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