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1668
results.
Updated on
16/05/2025 [07:20:00]
Results 1325 to 1350 of 1668
Absstract of: US2025140787A1
An electrode, a lithium battery comprising the same, and a method of manufacturing the electrode are provided. The electrode includes: an electrode active material layer including an electrode active material and a binder; an electrode current collector disposed on one surface or between opposite surfaces of the electrode active material layer; and an interlayer disposed between the electrode active material layer and the electrode current collector, wherein, when the electrode active material layer is measured by a surface and interfacial cutting analysis system (SAICAS), the ratio of change in a vertical relative force (FVR) between a first point 5% away from the surface of the electrode active material layer facing away from the electrode current collector, and a second point 5% away from the surface of the electrode current collector, with respect to the total thickness of the electrode active material layer, is 300% or less.
Absstract of: US2025140802A1
Provided are a single-crystal ternary cathode material and a preparation method therefor and application thereof. The chemical formula of the single-crystal ternary cathode material is LiNixCoyMnzM(1-x-y-z)Oc@LiaNdOb, wherein 0
Absstract of: US2025140961A1
Typically, electric power sources, such as batteries and fuel cells, require cooling to temperatures near or below ambient temperature for safe and efficient operation. Traditional cooling systems are not be able or practical to cool the components to the required temperatures, due to the lack of temperature differential between the required cooling temperature and the ambient temperature, which drives the heat transfer. Disclosed embodiments optimize the efficiency of a cooling system based on ambient conditions. In particular, embodiments determine input parameters from one or more sensed parameters, such as ambient temperature and ambient pressure, and utilize these input parameters in a process that maximizes the operation of cooling units in the most efficient mode.
Absstract of: US2025140953A1
A battery pack and a current sensor diagnosis method that enable diagnosis of abnormality of a current sensor including a shunt resistor, the battery pack including a battery module including battery cells, a current sensor for measuring a current in the battery module, a first switch connected to a first current path between a cathode of the battery module and a first pack terminal, a second switch connected to a second current path between an anode of the battery module and a second pack terminal, a first temperature sensor for measuring a shunt temperature of the current sensor, a second temperature sensor for measuring a first switch temperature, a third temperature sensor for measuring a second switch temperature, and a processor for diagnosing the current sensor based on at least one of the shunt temperature, the first switch temperature, or the second switch temperature.
Absstract of: US2025140951A1
According to one embodiment, a method, computer system, and computer program product for selective battery disabling is provided. The embodiment may include calculating a dendrite formation value of a cell within a battery pack based on captured sensor data. The embodiment may also include, in response to determining the dendrite formation value exceeds a safety threshold, disabling the cell.
Absstract of: US2025140948A1
A battery pack includes (i) at least one connection interface for connection to an electrical consumer, in particular an electric hand tool, and/or to a charging device, and (ii) a signal output unit configured so as to output at least one analog signal and at least one digital signal via at least one shared signal contact of the connection interface. The signal output unit includes at least one electric circuit configured so as to switch between a digital operating mode of the signal output unit and an analog operating mode of the signal output unit.
Absstract of: US2025140855A1
An energy storage cell, comprising: a layer comprising a plurality of fibers, the plurality of fibers having a MXene material disposed thereon; an electrolyte disposed on the layer; a first conductor in electronic communication with the electrolyte; and a second conductor in electronic communication with the electrolyte. Energy storage devices, the energy storage device comprising at least one energy storage cell according to the present disclosure. A method, comprising the use of an energy storage device according to the present disclosure.
Absstract of: US2025135516A1
A roller is configured to roll an electrode plate, and the roller includes a rolling portion and a temperature regulating assembly. A rolling surface for rolling the electrode plate is formed on an outer surface of the rolling portion, and a mounting hole is provided inside the rolling portion along an axial direction of the rolling portion. The temperature regulating assembly is provided in the mounting hole and configured to exchange heat with the rolling portion. A rolling apparatus has a first roller and a second roller. The first roller and the second roller are jointly configured to roll an electrode plate. When the rolling portion is rolling an electrode plate, the temperature regulating assembly regulates a temperature of the rolling portion along the axial direction, so as to adjust the radial deformation of the rolling portion depending on the rules of thermal expansion and contraction.
Absstract of: US2025135523A1
A method of making a cold plate includes stacking three aluminum sheets on top of each other while each of the three aluminum sheets is generally flat. An edge of the three aluminum sheets are secured together. A top one of the aluminum sheets is welded to a middle one of the aluminum sheets at a plurality of first locations and a bottom one of the aluminum sheets is welded to the middle one of the aluminum sheets at a plurality of second locations different than the plurality of first locations. A pressurized medium is supplied between the top one of the aluminum sheets and the bottom one of the aluminum sheets to separate the top one of the aluminum sheets from the bottom one of the aluminum sheets and deform the middle one of the aluminum sheets.
Absstract of: US2025135524A1
The present invention relates to a sealed portion folding apparatus and method for pouch-shaped battery cells, and more particularly to a sealed portion folding apparatus for pouch-shaped battery cells including a lower unit configured to allow a sealed portion to be seated thereon. The lower unit includes a lower folding block configured to perform horizontal reciprocation and upward and downward movement, an upper unit including an upper folding block configured to perform horizontal reciprocation and upward and downward movement and to press the sealed portion so as to be bent to a predetermined angle, a lower folding guide unit configured to perform upward and downward movement and to guide the sealed portion so as to be bent to a predetermined angle, and an upper folding guide unit configured to perform upward and downward movement and to guide the sealed portion so as to be bent to a predetermined angle.
Absstract of: US2025135486A1
A punching oil coater includes a coating device configured to correspond to feed rollers that contact an electrode plate and move the electrode plate and are at different positions from each other, and rotate to contact and coat a pair of uncoated portions of mutually symmetrical surfaces of the electrode plate with punching oil as the feed rollers press the pair of uncoated portions against the coating device and move the electrode plate; a sprayer configured to spray the punching oil onto the coating device; a punching oil supply device configured to uniformly control a flow amount and flow rate of the punching oil supplied to the sprayer; and a coating controller configured to control a punching oil coating operation for the electrode plate.
Absstract of: US2025140795A1
An electrochemical apparatus, including a positive electrode plate, where the positive electrode plate includes a positive electrode active material layer, and the positive electrode active material layer includes a first lithium manganese oxide and a second lithium manganese oxide; and in a fully discharged state of the electrochemical apparatus, through Raman test, the first lithium manganese oxide has a characteristic peak A in a range of 507 cm−1±10 cm−1 and a characteristic peak B in a range of 660 cm−1±10 cm−1, and the second lithium manganese oxide has a characteristic peak C in a range of 625 cm−1±10 cm−1. The electrochemical apparatus has high initial coulombic efficiency and excellent cycling performance on the basis of high energy density.
Absstract of: US2025140785A1
Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode includes a current collector, a first negative active material layer on a first side of the current collector; and a second negative active material layer on a second side of the current collector, wherein a loading level (A) of the first negative active material layer is larger than a loading level (B) of the second negative active material layer, the first negative active material layer includes a 1a layer contacting the current collector and a 1b layer on one side of the 1a layer, the 1a layer includes a 1a negative active material, the 1b layer includes a 1b negative active material, the 1a negative active material includes natural graphite, or a mixture of natural graphite and artificial graphite, the 1b negative active material includes artificial graphite, and the second negative active material layer is a single layer.
Absstract of: US2025140803A1
Disclosed are a novel one-body particle for secondary battery active materials, including a core and a coating layer formed on at least a part of the core, wherein the coating layer comprises both Co and a structure-stabilizing element, the core is present as a non-aggregated primary particle, and the structure-stabilizing element has a bond dissociation energy (BDE) with oxygen (O) greater than a bond dissociation energy (BDE) of Co and oxygen (O), and a method of preparing a novel one-body powder containing the same.
Absstract of: US2025140783A1
An electrode assembly includes: an oriented negative electrode, a non-oriented negative electrode, a positive electrode between the oriented negative electrode and the non-oriented negative electrode; and a separator between the positive electrode and the oriented negative electrode and between the positive electrode and non-oriented negative electrode, wherein the oriented negative electrode includes a first negative electrode active material including particles oriented in one direction and wherein the non-oriented negative electrode includes a second negative electrode active material including particles randomly oriented in one or more directions.
Absstract of: US2025140789A1
A main object of the present disclosure is to provide an electrode slurry of which dispersibility of a fiber shaped conductive material is well. The present disclosure achieves the object by providing an electrode slurry used for an all solid state battery, the electrode slurry containing an electrode active material including a hydroxyl group, a fiber shaped conductive material including an acidic functional group, a solid electrolyte, and a dispersion medium.
Absstract of: US2025140817A1
Disclosed is a negative electrode active material for a secondary battery containing: a composite material that has a silicide phase and a silicon phase, wherein the silicide phase contains an intermetallic compound of a silicon element and a metal element Me other than the silicon element, the metal element Me includes N kinds or more constituent elements Mi, where i=1 to N, and 5≤N, and a condition represented by the following expression is satisfied: 1.5<−ΣCi·lnCi, where Ci represents a mole fraction of each of the N kinds or more constituent elements Mi.
Absstract of: US2025140849A1
A positive active material includes a first lithium-nickel transition metal oxide and a second lithium-nickel transition metal oxide. Both the first lithium-nickel transition metal oxide and the second lithium-nickel transition metal oxide contain zirconium, and a molar content of zirconium element in the first lithium-nickel transition metal oxide is less than a molar content of zirconium element in the second lithium-nickel transition metal oxide, the first lithium-nickel transition metal oxide is of one or more structures of a monocrystalline particle or a quasi-monocrystalline particle, and the second lithium-nickel transition metal oxide is a secondary particle formed by aggregation of a plurality of primary particles.
Absstract of: US2025140839A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material capable of maintaining the electrochemical properties of a lithium secondary battery using a lithium composite oxide as a positive electrode active material while preventing and/or mitigating gas generation and swelling due to the positive electrode active material in a lithium secondary battery by suppressing the excessive growth of primary particles and improving the crystallinity of primary particles, and a lithium secondary battery including the same.
Absstract of: US2025140844A1
A positive electrode active material for rechargeable lithium batteries, a method of preparing the same, and a secondary battery including the same are disclosed. The positive electrode active material for rechargeable lithium batteries includes a lithium nickel-based transition metal composite oxide, wherein the lithium nickel-based transition metal composite oxide has a nickel content of 70 mol % or more and a cobalt content of 0 mol % to 0.01 mol % based on the total content of transition metals (or the total content of all metals excluding lithium). The lithium nickel-based transition metal composite oxide includes a lithium nickel-based active material and an aluminum-containing coating layer formed on a surface of the lithium nickel-based active material, and the aluminum-containing coating layer has an aluminum content of 10% to 35% as measured by EDS.
Absstract of: US2025140837A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a positive electrode active material including an overlithiated lithium manganese-based oxide, which can be synthesized at a lower temperature than that in a conventional synthesis process, and compensate for phase development and lithium ion conductivity, which are insufficient when synthesized at low temperatures, and a lithium secondary battery including the same.
Absstract of: US2025135517A1
An electrode rolling device acquires thicknesses of an electrode sheet, Tc at a center portion in a width direction, Twe at an end portion on a first side, Tde at an end portion on a second side, Twc at a first intermediate portion, which is set between the center portion and the end portion on the first side, and Tdc at a second intermediate portion, which is set between the center portion and the end portion on the second side. The electrode rolling device determines a deviation ΔTwe between the thickness Tc and Twe, a deviation ΔTwc between the thickness Tc and Twc, a deviation ΔTde between the thickness Tc and Tde, and a deviation ΔTdc between the thickness Tc and Tdc, and performs control so as to reduce the deviation ΔTwe or ΔTwc, whichever is larger, and to reduce the deviation ΔTde or ΔTdc, whichever is larger.
Absstract of: US2025135481A1
A surface treatment jig for performing surface treatment of an exterior body of an accumulator including a bottom, a shell and a port in a state where the surface treatment jig is connected to the exterior body and supports the exterior body includes: a support portion configured to support the accumulator; and a hook portion connected with the support portion. The support portion has a shape tapered near the hook portion.
Absstract of: US2025140821A1
The present disclosure provides a positive electrode active material layer which can improve battery capacity, a lithium-ion battery comprising such a positive electrode active material layer, and a method for manufacturing such a positive electrode active material layer. The positive electrode active material layer 20 of the present disclosure comprises a positive electrode active material 21a and a lithium alloy 22a of lithium and a metal element. The positive electrode active material is coated with a carbon material, the metal element has an alloying potential with lithium of 0.5V (vs. Li/Li+) or more, and the lithium alloy is arranged on a surface of closer to the positive electrode current collector and/or separator of the positive electrode active material layer. A lithium-ion battery of the present disclosure comprises a positive electrode active material layer of the present disclosure, which is interposed between a positive electrode current collector and a separator.
Nº publicación: US2025140832A1 01/05/2025
Applicant:
NINGDE AMPEREX TECH LIMITED [CN]
Ningde Amperex Technology Limited
Absstract of: US2025140832A1
An electrochemical device includes a positive electrode plate, a negative electrode plate, and an electrolyte. The positive electrode plate includes a positive electrode active layer, the positive electrode active layer includes a positive electrode active material, and the positive electrode active material includes an additive. During charge/discharge the electrochemical device, when the electrochemical device is in a fully discharged state, an X-ray diffraction pattern of the positive electrode plate has a characteristic diffraction peak 1 at a diffraction angle 2θ ranging from 17.5° to 19.5°, and the additive includes manganese element.
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