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1832
resultados
Última actualización
05/07/2025 [08:21:00]
Resultados 1225 a 1250 de 1832
Resumen de: WO2025131121A1
A composite current collector and a manufacturing method therefor, an electrode sheet and a secondary battery. The composite current collector comprises: a base film; at least one transition layer provided on the surface of at least one side of the base film, the transition layer being made of any one or a combination of at least two of metal niobium, metal tantalum, niobium alloy, tantalum alloy, a niobium-based compound or a tantalum-based compound; and a conductive layer provided on the surface of the side of the at least one transition layer relatively away from the base film. The transition layer having good compactness, stability and corrosion resistance is arranged between the base film and the conductive layer, on one hand, the charging and discharging cycle performance of batteries based on the composite current collector can be improved, and on the other hand, the safety performance of the composite current collector is effectively improved, thus improving the safety performance of batteries.
Resumen de: WO2025129933A1
The present disclosure discloses an immersion liquid cooling heat dissipation apparatus for an energy storage device. The immersion liquid cooling heat dissipation apparatus comprises: a cabinet body, which comprises a first liquid inlet pipe, a first liquid outlet pipe, a liquid storage water tank, and a placing frame, the first liquid inlet pipe and the first liquid outlet pipe serving as supporting legs; battery boxes, which are placed on the placing frame, the bottom of each battery box being provided with a flow dividing groove and a flow dividing piece, and the flow dividing pieces guiding cooling liquid to be uniformly distributed to the battery boxes; a spacer sleeve, which is mounted inside of each battery box, a plurality of overflow holes being formed at the top of the spacer sleeve, and a gap being reserved between the spacer sleeve and the battery box and forming an overflow space; a battery pack; and a BMS module. According to the present disclosure, cooling liquid is uniformly distributed into battery boxes by means of flow dividing grooves and flow dividing pieces in the battery boxes, so that the heat dissipation and cooling effects of all battery packs in the battery boxes are similar. Meanwhile, a first liquid inlet pipe and a first liquid outlet pipe of a cabinet body serve as a supporting structure of the cabinet body while conveying the cooling liquid, so that the space occupied by cooling liquid pipeline is reduced.
Resumen de: WO2025129959A1
A negative electrode material and a battery. The negative electrode material comprises primary particles, and the primary particles comprise silicon crystallites; the average crystallite size of the silicon crystallites that is measured under the condition that the negative electrode material is at 25°C is M0
Resumen de: WO2025129907A1
The present application discloses a battery and a battery pack. The battery comprises a case, an electrode assembly, explosion-proof valves, and a pressure relief channel, wherein the actual equivalent cross-sectional area S of the pressure relief channel satisfies: S≥(S1S2)/(nS0), and nS0≥S1, wherein S1 is the sum of the areas of the explosion-proof valves, S2 is the theoretical equivalent cross-sectional area of the pressure relief channel, n is the number of the explosion-proof valves, and S0 is the actual areas of the explosion-proof valves.
Resumen de: US2025208221A1
A battery management apparatus according to one embodiment of the present disclosure includes a storage unit configured to store battery information including a voltage and current, and a control unit configured to calculate a capacity ratio of a battery for each of a plurality of voltage ranges based on the battery information, to compare the calculated capacity ratio for each of the plurality of voltage ranges with a preset reference capacity ratio, and to determine a state of the battery based on a comparison result.
Resumen de: US2025204661A1
A carry case for an electronics-enabled eyewear device, such as smart glasses, has charging contacts that are movable relative to a storage chamber in which the eyewear device is receivable. The charging contacts are connected to a battery carried by the case for charging the eyewear device via contact coupling of the charging contacts to corresponding contact formations on an exterior of the eyewear device. The charging contacts are in some instances mounted on respective flexible walls defining opposite extremities of the storage chamber. The contact formations on the eyewear device are in some instances provided by hinge assemblies that couple respective temples to a frame of the eyewear device.
Resumen de: US2025207856A1
An electrode drying device includes a drying oven, a hot air spray nozzle, and a moisture supply device. The electrode drying device includes an interior space for drying an electrode sheet. The hot air spray nozzle sprays hot air on an electrode sheet being transferred into the drying oven. The moisture supply device includes a water spray nozzle, a water storage tank, and a pump. The water spray nozzle sprays moisture on a non-coating part of an electrode sheet. The water storage tank stores water and the pump is installed in a water storage tank to supply water to a water spray nozzle. The hot air spray nozzle dries an electrode sheet by spraying hot air, and the water spray nozzle may spray moisture on the non-coating part of the electrode sheet.
Resumen de: US2025206614A1
An anode active material for a lithium secondary battery according to the present disclosure includes a porous carbon-based particle including pores. The anode active material for a lithium secondary battery includes a composite coating which is formed on a surface of the porous carbon-based particle, and includes a silicon element and at least one additional element from the group consisting of group 13 elements and group 15 elements. A weight ratio of the additional element to a weight of the silicon element included in the composite coating is 0.01% to 4%. The electrical characteristics and lifespan characteristics of the lithium secondary battery may be improved by including the additional element in a predetermined range of contents.
Resumen de: US2025206619A1
The embodiments herein relate to methods, apparatus, and systems for forming and purifying solid carbon material from a molten carbonate salt electrolyte or spent lithium-ion batteries. Various embodiments also provide methods, apparatus, and systems for recycling certain materials including the carbonate salt electrolyte, carbon dioxide, water, etc. The system utilizes carbon dioxide in one or more processes, for example to purify the solid carbon and regenerate the carbonate salt electrolyte. These methods, apparatus, and systems may also employ a froth separator and/or heatless precipitation reactor to consume carbon dioxide in the production of solid carbon.
Resumen de: US2025206961A1
Provided are electrochemical cells with at least a portion of the exterior surface coated in a conductive aversive coating to deter children from eating the electrochemical cell. Described are compositions and methods for preparing electrochemical cells with aversive coatings capable of conducting electricity through the coating.
Resumen de: US2025206976A1
A slurry composition for a non-aqueous secondary battery functional layer contains a particulate polymer having a glass-transition temperature within a specific range and a water-soluble polymer including a sulfo group-containing monomer unit in a proportion of 3 mass % or more.
Resumen de: US2025206956A1
The present disclosure relates to the technical field of carbon black materials, and particularly to a granular carbon black and a preparation method therefor, an electrode and a secondary battery. For the granular carbon black, particle size distribution of the granular carbon black ranges as follows: a weight percent of granular carbon black with a particle diameter less than 0.125 mm is equal to or less than 2%, a weight percent of granular carbon black with a particle diameter ranging from 0.125 to 0.85 mm is from 18% to 60%, and a weight percent of granular carbon black with a particle diameter more than 0.85 mm is from 40% to 80%; and a secondary particle diameter D50 of the granular carbon black ranges from 2.0 μm to 3.51 μm.
Resumen de: US2025210737A1
Various systems and methods are provided for a battery management system. In one example, the battery management system includes a battery data receiving unit communicatively coupled to sensors of a battery pack. Further the battery data receiving unit includes instructions stored on non-transitory memory that when executed cause the battery data receiving unit to collect raw data from the sensors of the battery pack in a first format and transmit the collected raw data to an electronic control unit for downstream processing into a second format.
Resumen de: US2025210714A1
A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material. The positive electrode active material includes lithium iron phosphate particles. A loading amount of the positive electrode is about 450 mg/25 cm2 to 740 mg/25 cm2. The non-aqueous electrolyte includes a lithium salt, an organic solvent, and an additive. The additive includes at least one selected from the group consisting of compounds represented by Formulas 1 to 3 below. The additive is included in the non-aqueous electrolyte in an amount of about 0.1 wt % to 3 wt %.wherein R1, R2, R3, R4, n, and m are as defined above.
Resumen de: US2025210726A1
A battery system comprises: a control unit and at least one battery, wherein the battery comprises: an electrical box and a plurality of battery cells, a detection unit and a first switching unit that are provided in the electrical box, the plurality of battery cells being connected to form a battery cell assembly; and the control unit is separately connected to the detection unit and the first switching unit for controlling, according to a detection signal collected by the detection unit, the first switching unit to cut off or connect an internal power transmission line and/or an external power transmission line of the battery cell assembly.
Resumen de: WO2025131124A1
A silicon-based negative electrode material and a preparation method therefor, and a lithium-ion battery. The silicon-based negative electrode material comprises a silicon material, a first shell layer coating the surface of the silicon material, and a second shell layer coating the surface of the first shell layer, wherein the first shell layer comprises an electrically conductive material, which has gaps; and the second shell layer comprises carbon. By means of forming a passion fruit-like structure having a silicon active material, a hollow electrically conductive network and a carbon shell, the problem of a short cycle life caused by the volume expansion of a silicon-based material is alleviated, and electron transfer inside a silicon-based composite material with a hollow carbon shell is effectively improved, thereby increasing the electrical conductivity and the number of cycles of a battery prepared from the silicon-based negative electrode material. By means of controlling the decomposition of a carbon source, the preparation method realizes multi-layer coating on a silicon-based material, and the process is simple and controllable, which is conducive to green, safe and large-scale production.
Resumen de: WO2025131010A1
The present application discloses a dry-process separator, comprising a porous substrate layer and a tear-resistant coating coated on at least one surface of the porous substrate layer. The tear-resistant coating comprises a tear-resistant slurry, and the tear-resistant slurry comprises a polymer, an inorganic material, a binder, and a solvent, wherein the inorganic material contains a hydroxyl group, and the binder contains a hydroxyl group. The inorganic material comprises at least one of a tubular structure and a sheet-shaped structure; when the inorganic material is of the tubular structure, the length-diameter ratio of the inorganic material is 5:1-10:1; and when the inorganic material is of the sheet-shaped structure, the thickness of the inorganic material is 0.6-1 μm.
Resumen de: WO2025131042A1
An oxide precursor, a preparation method therefor and a use thereof. The oxide precursor has a general chemical formula of Ni xCo yMn zAl dM eO n, wherein 0＜x≤0.96, 0≤y≤0.96, 0≤z≤0.96, 0≤d≤0.15, 0＜e≤0.015, 0.6≤n≤1.6, x+y+z+d＝1, y, z and d are not simultaneously 0, and the metal element M has an ionic radius of ≥0.08 nm; and the distribution uniformity of the metal element M in the oxide precursor is greater than or equal to 98.5%. The oxide precursor has the uniformly distributed doping element M with a large ionic radius, which is conducive to improving the structural stability of a positive electrode material, such that a lithium ion battery has an excellent discharge capacity and cycle performance.
Resumen de: WO2025129920A1
Provided in the present application are an electrode fabrication device, a stacking device and a battery production line. The electrode fabrication device comprises: a fixed platform; a cutting mechanism, which is arranged above the fixed platform; and a movable cutting platform, which is arranged on the fixed platform and may move back and forth along a straight line, and is suitable for bearing an electrode material strip, a fixing structure being provided on the movable cutting platform, wherein the movable cutting platform has a first position and a second position on the fixed platform, and the movable cutting platform may move the electrode material strip to a cutting position. In the structure described above, the movable cutting platform can directly drive an electrode sheet to move, so that it is unnecessary to provide a handling apparatus to handle the electrode sheet, saving space occupied by the electrode fabrication device, and an additional handling procedure is also eliminated, thereby improving the electrode fabrication efficiency. The movable cutting platform directly driving the electrode material strip to move avoids errors in the placement position of the handling apparatus, so that it is unnecessary to provide alignment stations and CCD cameras both upstream and downstream of the movable cutting platform, and an alignment procedure is also eliminated, improving the production takt time.
Resumen de: WO2025129909A1
A lithium ion battery electrolyte, a preparation method therefor, and a use thereof. The lithium ion battery electrolyte comprises a lithium salt, an organic solvent and an additive, the organic solvent comprising a nitrile solvent. The room temperature conductivity σ of the lithium ion battery electrolyte satisfies the following relational expression: 15≤(K×ε×γ)/μ≤30, K=0.02-0.07, ε being the dielectric constant, γ being the mass fraction of nitrile solvent in the lithium ion battery electrolyte, and μ being the viscosity of the lithium ion battery electrolyte at room temperature. The electrolyte can effectively inhibit reductive decomposition of a nitrile solvent, and has the characteristic of weak solvation binding energy, while having relatively high ionic conductivity at low temperatures, and exhibiting relatively good rapid-charging performance. Furthermore, a battery prepared based on said electrolyte has excellent low-temperature capacity retention rate, thereby effectively improving the safety, energy density, power, rate, cycle, and other attributes thereof.
Resumen de: WO2025129892A1
Provided are a battery module and an acquisition mechanism thereof. The battery module acquisition mechanism comprises a bracket and an acquisition group; the acquisition group comprises a series assembly; the series assembly comprises a first series group, a second series group, and a first connection member which are all mounted on the bracket; the first series group and the second series group each comprise a first series row and a second series row which are opposite to each other; the first series row and the second series row are used for serially connecting the corresponding battery cell groups; two first series rows or two second series rows of the first series group and the second series group are connected to one another by means of the first connection member.
Resumen de: US2025206622A1
An inorganic solid state electrolyte includes a metal cation selected from Li+, Na+, Mg2+, Ca2+, Zn2+, or Al3+, and a single phase crystalline solution with a first borate cluster anion and at least one second borate cluster anion different than the first borate cluster anion. The first borate cluster anion and the at least one second borate cluster anion have the same number of vertices, but a different number of hydrogens exchanged with a halogen atom selected from F, Cl, Br, I, or a combination thereof. The inorganic solid state electrolyte also has an elastic modulus of less than 15 GPa and supports a coulombic efficiency of metal or alloy anode charging/discharging greater than 99%.
Resumen de: US2025206629A1
A lithium-rich metal oxide and a preparation method thereof, a positive electrode plate, a battery cell, and a battery are described. The lithium-rich metal oxide includes a lithium-rich metal oxide core and residual lithium on a surface of the lithium-rich metal oxide core. Based on 100 wt % as a total mass of the lithium-rich metal oxide, a mass percent k of the residual lithium satisfies: k≤0.5 wt %, and a lithium-ion diffusion coefficient D of the lithium-rich metal oxide satisfies: D≥1.0×10−15 cm2/s. When applied to a battery cell, the lithium-rich metal oxide of this application improves performance of the battery cell.
Resumen de: US2025206613A1
Provided are an olivine-type cathode material, a method thereof, and a lithium-ion battery. The cathode material includes a matrix and a carbon coating layer. In a Raman spectrum, the cathode material has Raman responses in wavenumber regions of 940 cm−1 to 950 cm−1, 1330 cm−1 to 1350 cm−1, and 1580 cm−1 to 1610 cm−1, corresponding to three characteristic peaks A, B, and C, respectively. The cathode material satisfies: 0.01≤an average of I(A)/I(C)≤0.3 and 0.01≤an average of I(A)/I(B)≤0.3. The cathode material according to the present disclosure has a uniform carbon coating, and thus the cathode material has a high stability, a low specific surface area, a low volume resistivity, and a high pallet density. At the same time, when the cathode material is applied in a lithium-ion battery, the lithium-ion battery has excellent electrochemical performances.
Nº publicación: US2025210711A1 26/06/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECH [KR]
LG Energy Solution, Ltd,
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Resumen de: US2025210711A1
An additive for a secondary battery and a lithium metal battery including the same are provided. The additive comprises an ionic liquid compound that includes a cation and an anion and is in a liquid state at an atmospheric pressure and at a temperature of 100° C. or less. The cation has a standard reduction potential lower than that of lithium cation (Li+) based on a standard hydrogen electrode (SHE) and has a structure in which an even number of aliphatic hydrocarbon groups having 3 or more carbon atoms identical to each other are bonded to a central element of the cation such that the cation has a symmetrical structure based on the central element. The additive is capable of suppressing dendritic lithium growth and induce uniform lithium growth on lithium metal thin films, thereby improving performance and life of the lithium metal battery.
BOPI
Sede Electrónica
