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1398
resultados
Última actualización
16/12/2025 [07:11:00]
Resultados 100 a 125 de 1398
Resumen de: WO2025255448A2
A method of treating a metal-containing composition comprising one or more of Li, Co, Mn, Fe, Cu, Al, and/or Ni, and/or a salt and/or an oxide thereof by contacting the metal-containing composition with an aqueous composition comprising a peroxide, a metal scavenger, and/or a free radical scavenger for a time and at a temperature sufficient to dissolve at least a portion of the metal-containing composition to produce a metal leachate comprising a liquid metal leachate and a solid residue, isolating the liquid metal leachate from the solid residue, and optionally separating dissolved salts and/or oxides of the Li, Co, Mn, Fe, Cu, Al, and/or Ni from the liquid metal leachate and from each other. Also, an aqueous composition for treating a metal-containing composition, comprising a metal scavenger and/or a free radical scavenger.
Resumen de: WO2025254431A1
The present invention relates to an anode active material comprising a composite, which includes a carbon matrix and silicon particles dispersed in the carbon matrix, wherein the silicon particle includes a film including SiOx(0
Resumen de: WO2025254314A1
A battery management apparatus according to an aspect of the present invention comprises: a profile obtaining unit configured to obtain a battery profile showing the correspondence between the voltage and capacity of a battery; a profile adjusting unit configured to generate a positive electrode profile and a negative electrode profile of the battery by adjusting a preset reference positive electrode profile and reference negative electrode profile to correspond to the battery profile; and a control unit configured to extract a parameter related to the battery from at least one of the positive electrode profile or the negative electrode profile, and determine the available lithium increase rate of the battery on the basis of the extracted parameter.
Resumen de: WO2025254435A1
In the present invention, a protective layer including a lithium metal compound is coated on an anode current collector so that the formation of lithium dendrites can be suppressed without deviating from the constituent elements and structure of a conventional battery, and thus the lifespan and cycle characteristics of a battery can be greatly improved.
Resumen de: WO2025251715A1
A first aspect of the present application provides a battery jelly roll, which is formed by winding a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet. At least one surface of the positive electrode sheet is provided with a positive electrode coating, and at least one surface of the negative electrode sheet is provided with a negative electrode coating. The negative electrode coating comprises a negative electrode active material; the negative electrode active material at least comprises a silicon material and a carbon material, and the weight percentage of the silicon material in the negative electrode active material is Y%; and the tortuosity of the separator is X, X being greater than or equal to 0.15Y0.5+1.8. A second aspect of the present invention provides a cylindrical battery, comprising the battery jelly roll, a cap, and a steel shell. The interior of the steel shell accommodates the battery jelly roll, and the top of the steel shell is sealed with the cap. In the present application, the tortuosity of the separator is designed on the basis of the proportion of the silicon-based material in the negative electrode active material, which can greatly reduce the penetration of iron and nickel elements into the central area, thereby significantly improving the cycle performance and safety performance of the battery cell.
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: 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: 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: 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: 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: 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: WO2025254345A1
The present invention relates to a laminated composite pad for a secondary battery and a manufacturing method therefor, wherein the laminated composite pad is for ensuring the safety of a battery pack. The purpose of the present invention is to provide a laminated composite pad for a secondary battery and a manufacturing method therefor, wherein a sandwich-type laminated composite pad comprising a first film, which has at least a predetermined compression rate and thus has the function of cushioning an expansion of the secondary battery, and a second film, which has a heat dissipation function for facilitating heat dissipation, is manufactured to provide a foam-type composite pad with cushioning properties, thereby providing a heat dissipation function for discharging heat that is normally generated, and provide at least a specific compression rate to make it possible to deal with volume expansion/contraction that inevitably occur during the process of using the battery and swelling that occurs over the life of the battery, thus improving the safety of the secondary battery.
Resumen de: WO2025254997A1
In one aspect, the disclosure relates to In accordance with the purpose(s) of the present disclosure, as embodied and broadly described herein, the disclosure, in one aspect, relates to compounds carbon-lithium composite materials, methods of making the same, and electrochemical cells comprising the same. In one aspect, the carbon-lithium composite materials can be made, in part, from agricultural waste. In another aspect, the disclosed electrochemical cells have a high energy density and good thermal and chemical stability over multiple charge cycles.
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.
Resumen de: WO2025251579A1
A battery module and a battery pack. The battery module comprises: a battery group (1), wherein the battery group (1) comprises a plurality of battery cells (11), and one end of each battery cell (11) in a first direction is provided with an electrode pole (12) and an explosion-proof valve (13); and a protective plate assembly (2), wherein the protective plate assembly (2) is provided on the sides of the battery cells (11) provided with the electrode poles (12) in the first direction, and has mounting gaps (24) and communicating holes (25) which are spaced apart from each other, and the communicating holes (25) are opposite to the explosion-proof valves (13) in the first direction.
Resumen de: WO2025251734A1
A self-unloading structure (100) and an electric device (200). The self-unloading structure (100) is configured to load and unload a battery pack (210) in the electric device (200), wherein a first connecting portion (212) is provided on the battery pack (210), and a second connecting portion (221) is provided on a carrying member (220) of the electric device (200); the first connecting portion (212) and the second connecting portion (221) are stacked; the self-unloading structure (100) is provided with a driving member (10) and a connecting rod (20), the driving member (10) being disposed on the side of the second connecting portion (221) facing away from the first connecting portion (212), a first connecting end (21) of the connecting rod (20) being connected to the driving member (10), and the driving member (10) being capable of driving the connecting rod (20) to extend or retract; when the connecting rod (20) extends, a second connecting end (22) of the connecting rod (20) penetrates the second connecting portion (221) and is connected to the first connecting portion (212), so as to fixedly mount the battery pack (210) on the carrying member (220); and when the connecting rod (20) retracts to disconnect the second connecting end (22) from the first connecting portion (212), the first connecting portion (212) is separated from the second connecting portion (221), and the battery pack (210) is separated from the carrying member (220) and falls off. In this way, when therma
Resumen de: WO2025254383A1
A battery pack according to an embodiment of the present invention comprises: a battery module including a battery cell stack in which a plurality of battery cells are stacked; a pack housing having the battery module mounted therein; and a coupling member for coupling between the battery module and the pack housing, the coupling member including a pack fixing part capable of being fixed between the pack housing and the coupling member, and a battery module fixing part capable of being fixed between the battery module and the coupling member, wherein the specification of the battery module fixing part of each of a plurality of coupling members is provided to correspond to the specification of the battery module that may be mounted in the pack housing, such that a coupling member suitable for the specification of the battery module to be mounted in the pack housing is selected and coupled to the battery module, from among the plurality of coupling members that may be coupled to the pack housing.
Nº publicación: WO2025254399A1 11/12/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
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Resumen de: WO2025254399A1
The present invention provides a separator for a lithium secondary battery, which comprises: a porous polymer substrate; and a porous coating layer disposed on at least one surface of the porous polymer substrate and including inorganic particles and a binder polymer, wherein the inorganic particles include surface-modified calcium carbonate (CaCO3), the surface-modified calcium carbonate includes a first surface-modified calcium carbonate, a second surface-modified calcium carbonate, or a combination thereof, the first surface-modified calcium carbonate includes: a first calcium carbonate; and a fatty acid-derived functional group chemically bonded to the surface of the first calcium carbonate, and the second surface-modified calcium carbonate includes: a second calcium carbonate; and an organosilane-derived functional group chemically bonded to the surface of the second calcium carbonate.
BOPI
Sede Electrónica
