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1111
resultados
Última actualización
02/09/2024 [07:41:00]
Resultados 400 a 425 de 1111
Resumen de: EP4421957A1
The present invention provides a packaging sheet for a power battery of a new energy vehicle, a power battery assembly of a new energy vehicle, and a method for disassembling the power battery assembly of a new energy vehicle. The packaging sheet comprises a functional layer, the functional layer comprises a thermoplastic polymer, and the thermoplastic polymer has a glass transition temperature in a range of 40°C to 67°C and a number-average molecular weight in a range of 10000 to 23000. According to the present invention, the packaging sheet for packaging a power battery of a new energy vehicle is simple in structure and easy to disassemble, and the obtained power battery assembly of a new energy vehicle is simple in structure, light in weight and high in battery volume ratio, and in particular, can be disassembled through a very simple process, thereby greatly improving the efficiency of updating and repairing new energy vehicle power batteries for electric vehicles.
Resumen de: EP4421903A1
An embodiment of the present invention provides: a negative electrode active material for a lithium secondary battery, wherein the negative electrode active material has silicon nanoparticles distributed in a silicon alloy and contains a Si-Al-Ni-B composition; and a method for producing same. Accordingly, a negative electrode active material for a lithium secondary battery can be provided, wherein the negative electrode active material has a controlled volume expansion rate and excellent electrical properties.
Resumen de: SE2130282A1
An electrochemical cell comprising a layered structure, the layered structure comprising at least a first layer (510) and a second layer (520). The first layer and the second layer are arranged adjacent to each other and form a first interface, wherein the first interface comprises a first plurality of elongated nanostructures (511) connected to a first surface of the first layer (510) facing the second layer (520), and a second plurality of elongated nanostructures (521) connected to a second surface of the second layer (520) facing the first layer (510). The first plurality of elongated nanostructures (511) and the second plurality of elongated nanostructures (521) are mechanically entangled.
Resumen de: AU2022371995A1
The present disclosure is directed to methods and systems for reacting elemental nickel particles with sulfuric acid and hydrogen peroxide solutions to produce nickel sulfate products, for example, nickel sulfate products suitable for battery materials.
Resumen de: EP4421946A1
A method for detecting thermal runaway of a battery pack including at least one battery module in a master battery management system (BMS) is provided. The method for detecting thermal runaway includes: detecting a communication error with at least one slave BMS that detects information on the at least one battery module; if a communication error with the at least one BMS is detected, obtaining temperature of a master board from a temperature sensor located on the master board in which the master BMS is installed; and detecting thermal runaway of the battery pack using the temperature of the master board.
Resumen de: EP4421911A1
The present application provides an anode active material for a battery and a preparation method thereof, a battery anode and a secondary battery. The anode active material for a battery comprises anode active substance particles, wherein the anode active substance particles comprise silicon oxide compounds and lithium; in the X-ray diffraction using Cu-Kα radiation, the anode active substance particles have a first diffraction peak in a range of 2θ=18.78°±0.2° and a second diffraction peak in a range of 2θ=47.4°±0.3°; and a full width at half maximum of the first diffraction peak is set as A, A is greater than 0.34°, a full width at half maximum of the second diffraction peak is set as B, and B/A≥1.3. The anode active material for a battery provided by this application has superior electrochemical properties, including high energy density and excellent kinetic performance when employed in batteries. Batteries utilizing this anode active material demonstrate significant advantages such as high energy density and exceptional rate discharge and fast charge performance.
Resumen de: WO2023067360A1
The present invention relates to a lithium manganese metal oxide material which comprises a first crystalline phase having a cation-disordered rock salt structure and a second crystalline phase having an orthorhombic LiMnO2 structure.
Resumen de: WO2023067259A1
This module comprises a stack, comprising: * a plurality of electrochemical cells (18); * at least one intermediate part (20) interposed between each pair of adjacent cells (18); * a mechanism for holding the stack clamping the cells (18) and the intermediate parts (20) against one another. The module comprises at least one dielectric liquid for cooling the stack. The intermediate part (20) defines at least one open channel (82A, 82B) for flow of the dielectric liquid. The channel (82A, 82B) opens onto the periphery of the stack in order to allow the dielectric liquid to flow through the stack and opens facing a main face (74, 76) of at least one cell (18), which face is applied against the intermediate part (20), in order to place the main face (74, 76) in contact with the dielectric liquid.
Resumen de: CN117678115A
The invention relates to a method for producing an energy store, in particular a high-pressure accumulator, for a motor vehicle, comprising the following steps: providing a plurality of energy store cells; -arranging the energy storage cells on or on a conveyor; -positioning the conveyor above a target structure, where the target structure extends in an xy plane; -arranging the energy storage cells on or in the target structure in the z-direction, in particular by opening or releasing the conveyor at least partially or partially.
Resumen de: WO2023066528A1
Embodiments disclosed herein relate to methods and apparatus for managing heat transfer to a battery. In one embodiment there is provided a method for managing heat transfer to a battery (105) electrically coupled to an electronic device. The method comprises determining a battery temperature of the battery (210) and a predicted heat source parameter associated with the electronic device (215). A battery heat transfer action (220) in a thermal medium (120b, 320hc) coupled between the battery and the electronic device is performed dependent on the predicted heat source parameter (453h) and a difference between a prescribed wanted battery temperature (453w) and the determined battery temperature (453b).
Resumen de: EP4422028A1
Disclosed in embodiments of the present application are a charging control method, a controller, a charging terminal, and a readable storage medium. The method comprises: acquiring an output capability parameter of the charger and a battery input capability parameter of the charging terminal (S200); comparing the output capability parameter with the battery input capability parameter to obtain a first charging power (S210); acquiring a second charging power of each charging mode combination of the charging terminal (S220); comparing the first charging power with the second charging power to screen out several candidate charging mode combinations from the plurality of charging mode combinations (S230); and acquiring a first charge efficiency of the candidate charging mode combinations, determining a target charging mode combination from the plurality of candidate charging mode combinations according to the first charge efficiency, and performing charging processing by using the target charging mode combination (S240).
Resumen de: EP4421947A1
Disclosed in the present invention is a method for recovering a lithium battery positive electrode plate. A method for recovering a lithium battery positive electrode plate. The method comprises the following steps: S1. reacting a positive electrode plate material with a metal salt in an aqueous solution, wherein the standard electrode potential of metal in the metal salt is higher than that of aluminum; S2. dissolving and soaking a solid obtained in step S1 with a mixed solution of an acid and a reducing agent; and S3. subjecting a leachate obtained in step S2 to a fluorine removal treatment, then extracting a transition metal in the leachate, and precipitating and separating lithium from the raffinate. In the method for recovering a lithium battery positive electrode plate of the present invention, aluminum impurities in the positive electrode plate material and fluorine impurities in the leachate can be thoroughly removed by means of the cooperation of all the steps and the raw materials used; in addition, it is guaranteed that the loss rate of valuable metal in the positive electrode plate material is ≤ 0.1%.
Resumen de: GB2627422A
A battery pack base plate comprises first and second sub-plates (1000 a, b, c); and one or more rearwards apertures (1002b, fig 13) located between the first sub-plate and the second sub-plate so as to provide a flow path for a coolant between the first sub-plate and the second sub-plate; first and second battery modules adjacent first and second sub-plates respectively; wherein each module comprises a battery cell layer (1012, 1022, 1032, fig 14) suitable for locating cells and providing a flow path for coolant across the cells of each module. Recessed channels, and perpendicular/opposite flow paths may be used. A pump, scaffolding, and gaskets for holes for the coolant may be used, for passing the coolant from one end to the other.
Resumen de: CN118104038A
A method of controlling operation of a lithium ion battery system is disclosed. The method comprises the steps of: obtaining a predicted state of the lithium ion battery system from a reduced order model with degradation (in a first method) or without degradation (in a second method); and correcting the predicted state by applying a Kalman filter to the predicted state and the battery measurements such that an improved predicted state is generated. In a second method, degradation is modeled by a degradation model that is separate from or independent of a reduced order model that does not have degradation. The lithium ion battery system is controlled based on the improved predicted state of the lithium ion battery system. Systems, computing systems and computer programs adapted to perform the methods are also disclosed.
Resumen de: EP4420869A1
A rolling apparatus (100) includes a roller assembly (110) and a power source. The roller assembly (110) includes four rollers (1 10a) rotatable around their respective axes, where the four rollers (110a) are arranged side by side in pairs along a first direction (X) and a second direction (Y) intersected with each other, and two rollers (110a) arranged side by side define a roll gap therebetween. The power source drives two rollers (110a) arranged diagonally to rotate in a same direction around their axes. Two roll gaps defined by one of the two rollers (110a) arranged diagonally and the two rollers (110a) arranged side by side therewith are used for rolling a first electrode plate (200) twice, and two roll gaps defined by the other one of the two rollers arranged diagonally and the two rollers (110a) arranged side by side therewith are used for rolling a second electrode plate (300) twice. In the rolling apparatus, the four rollers form strip moving routes for separately rolling the first electrode plate and the second electrode plate twice, such that each of the electrode plates can be continuously rolled twice, helping to reduce the cost of double rolling and improving the production efficiency of the rolling apparatus.
Resumen de: EP4421970A1
Disclosed is an electrode assembly, a battery, a battery pack and a vehicle. In the electrode assembly, the first uncoated portion provided at a long side end of a first electrode includes a segment region divided into a plurality of independently bendable segments by a plurality of cut grooves provided along a winding direction. The segment region includes a plurality of segment groups disposed with a group separation pitch along the winding direction. The plurality of segment groups constitute at least one segment alignment on one side of the electrode assembly. At least some of central points of winding turn arcs where the p number of segment groups are located are not located on a predetermined alignment line extending in the radial direction from the center of the core.
Resumen de: EP4421941A1
The present application relates to a cell winding process, a cell winding device, a cell, a battery, and a power consuming device. A heating portion (271) is arranged to heat a separator layer (24), such that a PCS polymer of the separator layer (24) is melted at a high temperature, to bond a cathode electrode plate (25) to an anode electrode plate (26), and the cathode electrode plate (25) is thus closely bonded and fixed to the anode electrode plate (26), thereby preventing the electrode plates from being retracted due to stress release after winding, which otherwise results in a gap. Therefore, the problem of lithium precipitation on an anode surface caused by a too long lithium ion transport path during charging and discharging can be prevented, and the safety performance of the battery can be further improved.
Resumen de: EP4421913A1
Disclosed is a preparation method for a high-nickel ternary positive electrode material, comprising: mixing LiOH powder and a high-nickel ternary precursor at a molar ratio (0.6-0.95): 1, performing first sintering in an oxygen atmosphere, adding a metal oxide into the LiOH solution to obtain a mixed solution, mixing the mixed solution with a primary sintering material in a protective atmosphere, drying and crushing the mixed material, performing second sintering of the powder material, spraying an atomized boric acid alcohol solution onto the secondary sintered material, and performing tempering treatment, to obtain a high-nickel ternary positive electrode material. The primary particle size of the material of the present invention is relatively uniform, and the primary particle surface forms a plasma conductor coating layer such as Li<sub>2</sub>MoO<sub>4</sub>, Li<sub>2</sub>WO<sub>4</sub> or Li<sub>2</sub>SnO<sub>3</sub>, which can protect the material, and a secondary spherical surface of the material also has an ion conductor Li<sub>3</sub>BO<sub>3</sub> coating layer, which also protects the material. That is, a primary particle and a secondary sphere of the present material both have coating layers, which greatly enhances electrical conductivity of the material and improves the capacity, circulation, and rate performance of the material.
Resumen de: GB2627468A
A solid crystalline material has formula LiaM2-bMʹbS7-yYyI1-xXx; wherein: a is from 5 to 9; M is selected from Si, Ge or Sn, or a mixture thereof; Mʹ is selected from Zn, B, Al, Ga, Sb, P, V, Nb, Ta, Mo, or W, or a mixture thereof; b is from 0 to 2; Y is selected from O, Se, Te, N, F, Cl, Br or I, or a mixture thereof; y is from 0 to 5; X is selected from O, S, Se, Te, F, Cl, Br, BH4, OH, NH2, or a mixture thereof; and x is from 0 to 1. The solid crystalline material may for example have the formula Li7Si2S7I. A method for preparing the material may include admixing Li2S, SiS2 and LiI and heating the mixture, for example to a temperature of from 300 to 600 °C. The material may have a monoclinic crystal structure with a P21In space group. A solid-state battery may include an electrolyte comprising the solid crystalline material.
Resumen de: EP4421938A1
This application provides an electrochemical device and an electronic device. The electrochemical device includes a positive electrode, a negative electrode, and an electrolytic solution. The electrolytic solution includes an organic solvent, a lithium salt, and an additive. The organic solvent includes an acetate compound and a carbonate compound. The carbonate compound includes ethylene carbonate and propylene carbonate. Based on a total mass of the electrolytic solution, a mass percent of the acetate compound is 4% to 50%, and a mass percent of the ethylene carbonate is 5% to 20%. This application optimizes the content and type of the solvent in the electrolytic solution, and utilizes an interface modification function of the additive to enhance the charging capacity of the electrochemical device and the electronic device and reduce the charging temperature increment.
Resumen de: EP4421919A1
The present invention relates to the technical field of lithium-ion batteries. Disclosed are a single-crystal ternary positive electrode material, a preparation method therefor, and an application thereof. The chemical formula of the single-crystal ternary positive electrode material is LiNixCoyMnzM(1-x-y-z)Oc@LiaNdOb, 0
Resumen de: EP4421192A1
A recycling process for Lithium-ion (Li-ion) batteries includes a selective leach of charge material metals followed by impurity control for effecting microstructures such as a pore volume and surface area for optimal structures and charge performance. Particle characteristics having a favorable effect on performance correlate with soluble impurities in a recycling leach solution formed from spent charge material in a battery recycling stream. Spent batteries yield a black mass of agitated, comingled cathode material, anode material and current collectors. Leaching of the black mass yields a recycling solution of charge material metals and impurities. Selective adjustment of these impurities through adding and/or separating soluble ions in the solution drives formation of internal voids, surface area and pore volume in the resulting cathode material.
Resumen de: EP4421897A1
This application relates to an electrochemical apparatus and an electronic apparatus including the same. The electrochemical apparatus of this application includes a positive electrode, a negative electrode, a separator, and an electrolyte. The positive electrode includes a first positive electrode material and a second positive electrode material. The first positive electrode material has good cycling stability and high initial coulombic efficiency, and the second positive electrode material has a high specific capacity and low initial coulombic efficiency during the first charge. This can compensate for the active lithium loss caused by the formation of SEI. The electrochemical apparatus provided by this application has advantages of high energy density, good rate performance, and long cycle life.
Resumen de: EP4421905A1
This application discloses a positive electrode, a preparation method thereof, and a lithium-ion secondary battery. The positive electrode includes a first positive electrode material and a second material. The first positive electrode material includes any one of substances represented by formula I; and the second material includes any one of substances represented by formula II, where the second material includes a phase B belonging to an F-3m1 space group. The positive electrode disclosed in this application includes the first positive electrode material and the second material. The first positive electrode material has good cycling stability and high initial coulombic efficiency, and the second material has high initial charge specific capacity and low initial coulombic efficiency, so the combination of the two materials can compensate for the loss of active lithium caused by formation of a SEI. In addition, the second material undergoes a phase transition to an R-3m phase after releasing excess lithium, and thus becomes an active material, increasing energy density of the secondary battery.
Nº publicación: EP4421916A1 28/08/2024
Solicitante:
NINGDE AMPEREX TECHNOLOGY LTD [CN]
Ningde Amperex Technology Limited
Resumen de: EP4421916A1
This application discloses a lithium-ion secondary battery, a battery module, a battery pack, and an electrical device. The lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution. The positive electrode plate includes a positive current collector and a positive electrode material layer disposed on at least one surface of the positive current collector. The positive electrode material layer includes a first positive electrode material represented by the following Formula (1) and a second positive electrode material represented by the following Formula (2). The electrolyte solution includes vinylene carbonate. A content of the vinylene carbonate based on a total mass of the electrolyte solution is greater than or equal to 0.1 wt% and less than or equal to 5 wt%. Li1+xFeyMnzM1-y-zPO4-tAt (1)(In General Formula (1), M includes one or more of Ti, Zr, V, or Cr; A includes one or more of S, N, F, Cl, or Br; and x, y, z, and t satisfy: -0.1 ≤ x < 0.1, 0 < y ≤ 1, 0 ≤ z < 1, 0 < y + z ≤ 1, and 0 ≤ t < 0.2.) Li2+rNi0.5-pCu0.5-qTivNp+q-vO2-sBs (2)(In General Formula (2), N includes one or more of Mn, Fe, Co, Al, V, Cr, or Nb; B includes one or more of S, N, F, Cl, or Br; and r, p, q, v, and s satisfy: -0.2 ≤ r ≤ 0.2, -0.5 < p < 0.5, -0.5 < q < 0.5, 0 < v < 0.01, 0 ≤ p + q - v < 0.2, and 0 ≤ s < 0.2)
BOPI
Sede Electrónica
