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1397
resultados
Última actualización
15/12/2025 [07:10:00]
Resultados 200 a 225 de 1397
Resumen de: WO2025254499A1
The present invention relates to a negative electrode active material, a negative electrode for a lithium secondary battery, including same, and a lithium secondary battery. The negative electrode active material includes a silicon-based active material; and graphite, wherein the graphite includes natural graphite and artificial graphite, an absolute value of a ratio of a difference in average particle diameter (D50) size of the natural graphite with respect to the artificial graphite is 10% or less, and an absolute value of a ratio of a difference in average particle diameter (D50) size of the silicon-based active material with respect to the artificial graphite is 40% or less.
Resumen de: WO2025254496A1
A battery manufacturing apparatus according to an embodiment of the present document comprises: a memory for storing at least one instruction; and one or more processors for executing the at least one instruction, wherein the one or more processors, in a winding process of a battery, identify the movement distance of an electrode plate moving in the left direction or the right direction relative to a direction in which the electrode plate advances before being wound, as the speed at which the electrode plate is wound changes, determine a tension for pulling the electrode plate in a direction opposite to the direction in which the electrode plate advances on the basis of the movement distance, and wind the electrode plate on the basis of the tension.
Resumen de: WO2025251526A1
The present invention belongs to the technical field of lithium batteries, and provides a lithium metal battery negative electrode and a preparation method therefor, and a lithium secondary battery. The lithium metal battery negative electrode comprises: a current collector and a lithium metal layer provided on the surface of the current collector, and a composite film layer is provided on the side, away from the current collector, of the lithium metal layer. The composite film layer comprises a two-dimensional black phosphorus nanosheet and a polymer piezoelectric material, and the mass ratio of the two-dimensional black phosphorus nanosheet to the polymer piezoelectric material is 1:1-2. The growth of lithium dendrites and the decomposition of an electrolyte solution can be inhibited, and the attenuation of battery performance can be effectively mitigated.
Resumen de: WO2025251523A1
A battery cell (10), a battery (100), and an electrical device, relating to the technical field of batteries. The battery cell (10) comprises: a casing (12), at least two side walls of the casing (12) having different thicknesses, the casing (12) having a first side wall (12a) in a first direction (X), at least one end of the casing (12) in a second direction (Z) being provided with an opening (121), and the second direction (Z) being perpendicular to the first direction (X); and an end cover (11), which covers the opening (121), the end cover (11) being provided with a positioning portion (111), and the first side wall (12a) being provided with a mating portion (122) mating with the positioning portion (111). The positioning portion (111) and the mating portion (122) serve as fool-proof structures, which can reduce the possibility of the end cover (11) being assembled in a wrong direction relative to the casing (12), thereby improving the assembly quality and assembly efficiency of the battery cell (10).
Resumen de: WO2025251643A1
Provided in the present application are an electrolyte additive, an electrolyte and a battery. The electrolyte additive comprises a first additive, a second additive and a third additive; the first additive comprises a compound represented by formula 1, R1 being selected from a C atom or an O atom, R2 being selected from formula 5 or formula 6, R3 being selected from methylene, formula 7 and formula 8, R4 being selected from formula 9 or formula 10, and R2, R3 and R4 at least comprising one sulfur atom; the second additive comprises at least one of a compound represented by formula 2 and a compound represented by formula 3, X comprising a P atom or a B atom; the third additive comprises a compound represented by formula 4: R-N=C=O formula 4, R comprising at least one of an alkyl group, an O=C=N-substituted alkyl group, a cycloalkyl group, an O=C=N-substituted cycloalkyl group, an aryl group and an O=C=N-substituted aryl group. Thus, the present application can form on electrode surfaces stable and low-impedance interfacial films, thereby reducing the impedance of batteries and the gas production of the batteries, and improving the cycle performance of the batteries.
Resumen de: WO2025251855A1
The present application provides a pressure relief valve and a battery pack. The pressure relief valve comprises a valve body; a through pressure relief hole is formed in the valve body; whistle holes are formed on the outer peripheral surface of the valve body; the whistle holes extend to the inner peripheral surface of the pressure relief hole, and form, on the inner peripheral surface, openings communicated with the pressure relief hole. The whistle holes are configured to produce a sound when allowing part of gas in the pressure relief hole to be discharged.
Resumen de: US2025377412A1
Methods and systems for determining a status of a battery pack of a vehicle is provided. Charging of the battery pack is initiated. Charging parameters of the battery pack are measured during charging of the battery pack are received. Discharging of the battery pack is initiated. Discharging parameters of the battery pack measured during discharging of the battery pack are received. The status of the battery pack is determined based on the charging parameters and the discharging parameters.
Resumen de: US2025377411A1
An early diagnosis apparatus for foil breakage of a battery, the early diagnosis apparatus includes a resistance measurer configured to measure an internal resistance of each of a plurality of battery cells included in a battery tray output from a battery assembly process when a point in time of an inspection start is reached after battery assembly is completed, during a pause period between a battery assembly process and a battery formation process, and a foil breakage inspector configured to calculate a delta internal resistance, based on the internal resistance received from the resistance measurer, and to inspect whether foil breakage is present in each of the plurality of battery cells, based on the delta internal resistance.
Resumen de: US2025377414A1
A battery diagnosis device and method, and a battery pack are disclosed. A battery diagnosis device includes a configuration for diagnosing an abnormality of a battery cell in a manner of analyzing a change in behavior of a cell voltage change rate that appears when the battery cell is discharged in a state in which a state of charge (SOC) of the battery cell has been formed as a predefined reference SOC.
Resumen de: US2025377174A1
The invention relates to a heat exchanger for the thermal management of an electrical and/or electronic element, advantageously of a vehicle, including a heat exchange body having: a heat exchange wall intended to be in thermal contact with the electrical and/or electronic element, —a base wall opposite the heat exchange wall, a flow channel for a heat-transfer fluid formed between the heat exchange wall and the base wall, the flow channel including: a first zone having a first heat-transfer-fluid flow disruption component, a second zone having a second heat-transfer-fluid flow disruption component, the first heat-transfer-fluid flow disruption component consisting of a plurality of local deformations on the base surface and the second heat-transfer-fluid flow disruption component consisting of a fin arranged between the heat exchange surface and the base surface and forming a plurality of flow paths.
Resumen de: US2025377317A1
An X-ray inspection device according the present disclosure includes an X-ray output part irradiating X-rays, an X-ray detector disposed at an opposing position of the X-ray output part and detecting the X-rays to obtain a plurality of gray values, an alignment part assisting in alignment between the X-ray output part and the X-ray detector, a transfer part transferring a battery in a predetermined direction to generate an X-ray image, a signal processor acquiring the X-ray image including the plurality of gray values, and an inspector determining whether the X-ray output part and the X-ray detector are aligned with each other by using the X-ray image of the alignment part.
Resumen de: US2025379280A1
A cell includes a cell housing, at least one end cap, at least three terminals, the at least three terminals including at least one positive terminal and at least one negative terminal. The cell further includes a coupling device for each of the at least three terminals, the coupling device including a busbar and a thermal interface material, the busbar being in contact with and disposed between the terminal and the thermal interface material, the busbar and the thermal interface material thermally coupling the terminal to a top or bottom cold plate. The thermal interface material further electrically insulates the top or bottom cold plate from the terminal.
Resumen de: US2025379276A1
A battery cooling system may be configured for use with a battery. The battery may include a battery core. The battery cooling system may include a structured surface surrounding the battery core. The battery cooling system may include a plurality of wicking structures arranged axially around the structured surface. Each of the plurality of wicking structures may be arranged a distance apart from one another such that a space exists between each of the plurality of wicking structures. A battery case may surround the plurality of wicking structures.
Resumen de: US2025379266A1
Embodiments described herein relate to electrochemical cells with dendrite prevention mechanisms, and methods of producing and operating the same. In some aspects, an electrochemical cell can include an anode and a cathode material disposed on a cathode current collector, the cathode material and the cathode current collector forming a cathode. The electrochemical cell further includes a first separator disposed on the anode, a second separator disposed on the cathode, and an interlayer disposed between the first separator and the second separator, the interlayer including electroactive material, the interlayer including a source of lithium ions, the lithium ions configured to migrate toward the anode upon a voltage difference between the interlayer and the anode exceeding a threshold value. In some embodiments, the anode can include an anode material disposed on an anode current collector. In some embodiments, the anode material can include graphite, silicon, and/or hard carbon.
Resumen de: US2025379285A1
The present disclosure relates to a battery assembly according to an embodiment of the present disclosure includes: a plurality of battery cells, each of which includes a first tab and a second tab, arranged along a predetermined stacking direction; at least one plate arranged between the plurality of battery cells; and a flow path formed inside at least one plate through which fluid moves, wherein the at least one plate may be electrically connected to a battery cell facing at least one side among the two sides including one side and the other side respectively formed along the predetermined stacking direction.
Resumen de: US2025379262A1
A battery cell includes an electrode assembly, a separator, and a support member. The electrode assembly includes a first electrode plate body and a second electrode plate body that have opposite polarities and are stacked in a first direction. The first electrode plate body includes a body portion and flange portions. A projection of the body portion onto the second electrode plate body in the first direction overlaps at least part of the second electrode plate body. The flange portions are connected to at least part of a peripheral side of the body portion and protrude from an outer edge of the second electrode plate body. The separator wraps the electrode assembly. The support member is located in the separator. The support member is disposed on at least one side of the electrode assembly in the first direction.
Resumen de: WO2025254492A1
A method for inspection of one or more battery cells during manufacture, the method comprising: charging the one or more battery cells; applying a pressure to the one or more battery cells; and determining whether at least one of the one or more battery cells is faulty based on an electric charging characteristic of the one or more battery cells in reaction to applying the pressure.
Resumen de: WO2025254248A1
Disclosed is a negative electrode for a lithium secondary battery, the negative electrode comprising: a lithium metal layer; a first protective layer disposed on the lithium metal layer and comprising a compound represented by chemical formula 1; and a second protective layer disposed on the first protective layer and comprising lithium-containing metal oxide, wherein the thickness of the first protective layer is 0.1 nm-1 µm (chemical formula 1 is as described in the description of the invention).
Resumen de: WO2025254104A1
A dismantling device 1 dismantles a wound body 100 comprising a laminated body that is wound in the longitudinal direction, the laminated body having a plurality of belt-shaped bodies including an electrode plate and a separator laminated therein. The dismantling device 1 comprises: a stage 2 on which the wound body 100 is placed; an unfolding portion 6 for unfolding a winding-finish end of the wound body 100 on the stage 2; a securing portion 8 for securing the winding-finish end side of the wound body 100; and a peeling tool drive portion 16 for inserting a peeling tool 46 between the belt-shaped outermost layer and the belt-shaped second and subsequent layers, and moving the peeling tool 46 in a direction away from the winding-finish end.
Resumen de: WO2025254103A1
A restraint release device for a wound body 100 at which a laminate of a belt-like electrode plate and a belt-like separator is wound in the longitudinal direction and a winding-end end 100a is restrained by tape 112 comprises a cutting blade and a cutting blade drive mechanism that moves the cutting blade so as to form a cut line CL at the wound body 100. The cutting blade drive mechanism forms the cut line CL such that, in a view of the winding-end end 100a from the direction orthogonal to the axial direction A of the wound body 100, the cut line CL overlaps the winding-end end 100a and passes through a region R1 that is further to the side in the opposite direction of the winding direction B of the wound body 100 than the winding-end end 100a to overlap an axial-direction end 100b that is positioned in said region R1, and the entirety of the tape 112 is within the extension range R of the cut line CL in the axial direction A.
Resumen de: WO2025254322A1
The present invention relates to a composition for coating a secondary battery separator, a secondary battery separator using same, and a secondary battery, the composition being capable of suppressing the formation of metal dendrites in a secondary battery, particularly a sodium secondary battery, and thus improving the durability of the battery.
Resumen de: WO2025251600A1
Disclosed in the present application are an electrolyte and a battery, the electrolyte comprising a lithium salt, an organic solvent, a first additive and a second additive; the first additive is represented by formula I, and the second additive comprises at least one of 1,3-propane sultone, 1,3-propene sultone, ethylene sulfate, methylene methanedisulfonate and a compound represented by formula II; in formula I, R1, R2, R3, R4, R5, R6, R7 and R8 are each independently selected from any one of hydrogen, halogen, alkyl and haloalkyl. Introducing both the first additive and the second additive into the electrolyte can improve the cycle performance and the high and low temperature performance of lithium batteries, thereby prolonging the service life.
Resumen de: WO2025251524A1
The present application relates to the field of batteries, and provides a battery cell, a battery and an electrical device. The battery cell comprises a casing, an electrode assembly and a protective member, the electrode assembly being accommodated in the casing, the electrode assembly comprising a positive electrode sheet, a negative electrode sheet and a separator, and the positive electrode sheet, the separator and the negative electrode sheet being wound or stacked to form the electrode assembly. The protective member covers at least part of the outer surface of the casing, and the protective member comprises a thermal insulation layer, the thermal insulation layer being used for suppressing the heat of the electrode assembly from transferring to the side of the protective member facing away from the casing, and the thermal conductivity of the thermal insulation layer being less than or equal to 0.5. The battery cell is provided with the protective member, and the protective member covers at least part of the outer surface of the casing. The protective member has the thermal insulation layer, such that when thermal runaway occurs in one battery cell, the protective member can prevent heat from being transferred to another battery cell adjacent to the battery cell to a certain extent, thereby reducing the risk of thermal runaway occurring in another battery cell adjacent to the battery cell, and helping to improve the battery reliability.
Resumen de: WO2025251576A1
Provided in the present invention are a temperature effect calibration circuit and method for voltage measurement, and a battery management system and a vehicle. The temperature effect calibration circuit for voltage measurement comprises: a temperature measurement module, which performs measurement and outputs a temperature measurement signal; a sampling module, which samples a voltage to be measured; a reference voltage generation module, which generates a reference voltage; a quantization module, which converts into a digital signal an analog signal output by the sampling module; a compensation parameter calculation module, which performs quadratic fitting and calculation to obtain compensation parameters; and a temperature effect correction module, which corrects an output signal of the quantization module at a current temperature to obtain a corrected voltage measurement signal. In the present invention, there is no need to add a complex circuit design to an analog circuit domain, and thus the design is easier to implement; the requirement for a temperature coefficient of a device in the process is reduced, and thus the technical solution can be applied to various different process nodes; and calibration is performed at a digital backend, and only one instance of full-temperature-range scanning is required during the factory testing of a chip, without spending a large amount of time on a high/low-temperature test, thereby effectively reducing costs.
Nº publicación: US2025376823A1 11/12/2025
Solicitante:
SRD KOREA CO LTD [KR]
SRD KOREA CO., LTD
Resumen de: US2025376823A1
The system for deicing black ice includes a plurality of laser scanners that are arranged at intervals along a road, each laser scanner including a light source unit, a non-contact temperature sensor, and a control unit that controls an operation of radiating the laser to the area in charge, a weather sensor that measures a temperature and humidity, and an integrated controller that communicates with the plurality of laser scanners. The integrated controller determines whether the laser is radiated to the road surface based on at least one of the measured temperature and humidity, and when the laser radiation is determined, generates a control signal to activate at least one laser scanner, and the control unit determines a heating area, and generates a pulse signal to turn on/off a light source unit so that the laser is radiated in accordance with a shape and range of the heating area.
BOPI
Sede Electrónica
