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1452
resultados
Última actualización
04/05/2025 [07:15:00]
Resultados 475 a 500 de 1452
Resumen de: WO2025086284A1
An electrolyte, a secondary battery, and an electric device. The electrolyte comprises a first fluoroether solvent and a second fluoroether solvent, wherein the number of carbon atoms in the first fluoroether solvent is greater than 4, and the number of carbon atoms in the second fluoroether solvent is not greater than 4. The electrolyte can improve the cycling stability of a battery.
Resumen de: WO2025086481A1
The present application relates to the technical field of batteries. Provided are a battery cell, a battery and an electrical device. The battery cell comprises an electrode assembly and a current collection member, the electrode assembly comprising an electrode main body and tabs provided at the ends of the electrode main body; the current collection member is provided on a tab, and part of the outer edge portion of the current collection member coincides with the outer edge portion of the tab, such that part of the tab is exposed outside. In the battery cell provided by the present application, the outline dimension of the current collection member is smaller than that of the tab, such that the current collection member does not fully cover the tab. Thus, during laser welding of the current collection member and the tab, a laser beam can be incident laterally, so as to form a small acute angle with the plane where the tab is located, thereby lowering the probability of separator damage caused by the laser beam being vertically incident on the plane where the tab is located, and improving the yield of electrode assembly manufacturing.
Resumen de: US2025135913A1
A battery system includes an array of cells and an insulating plate. The array of cells is arranged in first and second subsets of cells. The first and second subsets of cells define a space therebetween. The insulating plate has a central region disposed within the space. The insulating plate has first and second lateral regions disposed external to the space and extending beyond first and second opposing lateral ends of the array of cells, respectively. The central region has a first dimension extending in a first direction between the first and second subsets of cells. The first and second lateral regions have second and third dimensions, respectively, extending in a second direction. The second direction is substantially parallel to the first direction. The second and third dimensions are greater than the first dimension.
Resumen de: US2025135896A1
A vehicle includes a system performing a method of operating the vehicle. The system includes a battery pack, a sensor associated with the battery pack, a cooling system for cooling the battery pack, and a processor. The processor is configured to measure a battery pack parameter of the battery pack for an occurrence of a battery pack fault, measure a sensor parameter for the occurrence of a sensor fault in the sensor, measure a cooling system parameter of the cooling system for the occurrence of a cooling system fault, determine an ingress of a fluid into the battery pack based on the occurrence of the battery pack fault and one of the sensor fault and the cooling system fault, and perform an action based on the ingress of the fluid into the battery pack.
Resumen de: US2025135730A1
Aspects of the disclosure include systems and methods that leverage adjacent component heating to accelerate the cure time of thermal interface adhesives. An exemplary method can include receiving a battery pack and a thermal management system including a cooling plate, an upper tray, and a lower tray joined to opposite surfaces of the cooling plate to define an enclosed volume therebetween. The method includes wetting an interface between the battery pack and the thermal management system with an adhesive and joining the battery pack to the thermal management system at the interface. The method includes directing a heating fluid through the enclosed volume, thereby heating the adhesive. The method includes, responsive to determining that a temperature of the adhesive has reached a target temperature, maintaining the temperature for a soak time according to a cure curve of the adhesive to achieve a target bond strength.
Resumen de: US2025135522A1
A secondary battery case manufacturing device includes a die including a first surface and a second surface that are opposite to each other, a punch hole extending through the first surface and the second surface, a punch arranged to face the first surface and configured to press a workpiece toward the punch hole in a first direction, a knockout member arranged to face the second surface and configured to press the workpiece in a second direction opposite to the first direction, and a stamp member on the knockout member and configured to imprint a pattern on the workpiece as the knockout member comes into contact with the workpiece.
Resumen de: US2025140811A1
A positive electrode active material includes a plurality of core particles including a layered lithium nickel-manganese-based composite oxide having a nickel content (e.g., amount) of greater than or equal to about 60 mol % based on 100 mol % of a total metal composition of the lithium nickel-manganese-based composite oxide excluding lithium, and a coating layer located on the surface of the core particle and containing Al and Ti. Also disclosed are a method of preparing the positive electrode active material, and a positive electrode and rechargeable lithium battery including the same.
Resumen de: US2025140816A1
The invention relates to a secondary cell comprising an anode, a cathode, optionally a separator, and an electrolyte, characterized in that the anode comprises an active material or composition of active materials, wherein at least one active material or composition of active materials functions as a current collector, wherein the active material or composition of active materials comprises carbon, silicon, and/or metal oxide(s), and wherein the anode does not comprise any additional current collector. A vehicle comprising said secondary cell is also claimed.
Resumen de: US2025140835A1
A cathode active material powder for lithium secondary batteries is provided, containing a core particle consisting of a lithium metal composite oxide, and a coating layer coating at least a part of the core particle, in which the coating layer contains an oxide containing at least one element A selected from the group consisting of Nb, Ta, Ti, Al, B, P, W, Zr, La, and Ge, and the following (1) and (2) are satisfied. (1) a substance amount of the element A per unit area, which is calculated from analysis results by inductively coupled plasma mass spectrometry and a nitrogen adsorption BET method, is 3.0×10−4 mol/m2 or less, and (2) a standard deviation of a compositional ratio of the element A, which is calculated from a value obtained from an SEM-EDX analysis result, is 4.6 or more and 8.2 or less.
Resumen de: US2025140834A1
One embodiment of the present invention provides a positive electrode active material for a sodium secondary battery, including an O3-type sodium composite transition metal oxide containing at least sodium, a transition metal, and a doping metal, wherein the sodium composite transition metal oxide is a secondary particle in which a plurality of primary particles are aggregated, and an aspect ratio of the primary particle ranges from 1:1 to 1:2.5.
Resumen de: US2025140836A1
The present invention relates to a positive electrode active material and a lithium secondary battery including the same, and more particularly, to a single-crystal type positive electrode active material in which the peak of the particle size distribution observed in the volume cumulative particle size distribution graph is shifted toward Dmax, which is the maximum particle size, and the sharpness of the peak of the particle size distribution is high, and a lithium secondary battery including the same.
Resumen de: WO2025088457A1
Provided is a novel positive electrode active material. Also provided is a battery with excellent charge and discharge characteristics. This battery has a positive electrode. The positive electrode has a positive electrode active material layer. The positive electrode active material layer has positive electrode active material particles containing magnesium, titanium, nickel, aluminum, and lithium cobalt oxide. XPS analysis of the plurality of positive electrode active material particles in the positive electrode active material layer shows a peak in the range from 850 eV to 860 eV inclusive and at a position at least 0.5 eV higher than the peak position in XPS analysis of nickel(II) oxide.
Resumen de: WO2025087261A1
The present invention belongs to the technical field of lithium battery manufacturing, and particularly relates to a battery cell assembly winding apparatus and method and an electrode sheet fly-cutting mechanism, solving the problem of long auxiliary time and low efficiency caused by the need of deceleration or stopping for electrode sheet or separator cutting. The battery cell assembly winding apparatus comprises a turret; a first station and a second station are arranged on the turret; winding needles are respectively arranged on the first station and the second station; two electrode sheet cutter driving rollers symmetrically arranged along an electrode sheet conveying channel are arranged at an electrode sheet feeding end of the first station; electrode sheet cutters are arranged on the electrode sheet cutter driving rollers; the electrode sheet cutters on the two electrode sheet cutter main driving rollers are arranged in a staggered manner and can be meshed with each other during the rotation of the two electrode sheet cutter driving rollers; the two electrode sheet cutter driving rollers are respectively connected to respective first translation driving mechanisms; and a separator cutting mechanism is arranged between the first station and the second station. Short auxiliary time, high winding efficiency and excellent winding effects are achieved.
Resumen de: WO2025087174A1
The present disclosure relates to the technical field of batteries, and provides a battery. The battery comprises a positive electrode sheet and a negative electrode sheet, the negative electrode sheet comprises a negative electrode current collector and a negative electrode active layer disposed on the negative electrode current collector, and a negative electrode active material in the negative electrode active layer comprises graphite and hard carbon; the positive electrode sheet comprises a positive electrode current collector and a positive electrode active layer disposed on the positive electrode current collector, a positive electrode active material in the positive electrode active layer comprises lithium iron phosphate, the battery is discharged, and a voltage and capacity curve is drawn for differentiation to obtain a differential value dV/dQ curve; dV/dQ satisfies the following condition: within the range of 25-35% SOC, the differential value dV/dQ ranges from -0.07 V/Ah to -0.01 V/Ah. The blending ratio of the hard carbon in the negative electrode active material and the differential value dV/dQ of the negative electrode active material are within a specific range, so that favorable and unfavorable factors caused by blending of the hard carbon can be balanced, and the situation of voltage decay being too rapid is reduced while the reduction of battery costs and the improvement of the safety performance and the cold start performance are ensured.
Resumen de: WO2025086609A1
The present invention provides a high-voltage energy storage power system and a battery cluster state precise sensing method thereof. The high-voltage energy storage power system comprises: a battery cluster, a start-up protection circuit, PCS units, a fault bypass circuit, a direct-current side filter inductor, a bus capacitor, PCS unit sub-controllers, and a BMS; direct-current side positive electrodes of the PCS units are sequentially connected in series to the direct-current side start-up protection circuit, the battery cluster, and the direct-current side filter inductor, and then connected to direct-current side negative electrodes of the PCS units; alternating-current side positive electrodes of the PCS units are sequentially connected in series; the bus capacitor is connected in parallel to two electrodes at a direct-current side of each PCS unit; the PCS unit sub-controllers are respectively connected to the fault bypass circuit, the PCS units, the start-up protection circuit, and the BMS; and the BMS is connected to the battery cluster.
Resumen de: WO2025086606A1
The present invention relates to an electrolyte and a preparation method therefor, a secondary battery, and a power-consuming device. The electrolyte comprises an electrolyte salt, a first solvent and a composite flame retardant, wherein the composite flame retardant comprises a flame retardant and a gel polymer, the flame retardant is present in the internal pores of the gel polymer, the electrolyte salt is dissolved in the first solvent, and the composite flame retardant is dispersed in the first solvent. When the electrolyte is used in a secondary battery, it is beneficial to prolonging the service life of the battery and reducing the damage caused by thermal runaway of the battery.
Resumen de: WO2025086617A1
A non-aqueous electrolyte and a quick-charging secondary battery. The non-aqueous electrolyte comprises a primary injection electrolyte and a secondary injection electrolyte. The primary injection electrolyte comprises a mixed lithium salt, a carboxylic acid ester solvent, and a primary additive; the primary additive comprises vinylene carbonate and fluoroethylene carbonate; and on the basis of the mass of the primary injection electrolyte, the mass percentage content of the vinylene carbonate is A%, and the mass percentage content of the fluoroethylene carbonate is B%, wherein the value of A+B ranges from 1 to 6. The secondary injection electrolyte comprises a secondary additive; the secondary additive comprises vinylene carbonate; and on the basis of the mass of the secondary injection electrolyte, the mass percentage content of the vinylene carbonate is C%, wherein the value of (A+B)/C ranges from 0.06 to 0.48. The non-aqueous electrolyte is applicable to quick-charging and wide-temperature secondary battery systems.
Resumen de: WO2025086295A1
An electrolyte, a secondary battery and an electric device. The electrolyte comprises a fluoroether solvent and a pyrrole ionic liquid. The electrolyte has flame retardance and can improve the safety performance of batteries.
Resumen de: WO2025086616A1
An electrolyte, a secondary battery, and an electrical apparatus. The electrolyte comprises an organic solvent and inorganic nanoparticles. The inorganic nanoparticles are suspended and dispersed in the organic solvent. The electrolyte has short sustainable combustion time and high oxidation voltage. The battery has a long thermal runaway time and excellent cycling stability.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: 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.
Resumen de: US2025140973A1
A battery module reduces the risk of secondary ignition or explosion and increases durability against external impacts. The battery module includes a plurality of secondary batteries respectively having a gas venting portion for discharging a gas generated therein to the outside at a predetermined pressure and arranged in a front and rear direction in two rows; and a cooling member including a body portion interposed between two rows of the plurality of secondary batteries and having a size corresponding to left and right sides of the plurality of secondary batteries, and a gas discharge portion provided to at least one of an upper portion and a lower portion of the body portion and having a gas discharge passage elongated from a front end to a rear end of the body portion.
Nº publicación: US2025140949A1 01/05/2025
Solicitante:
LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD
Resumen de: US2025140949A1
An optical communication device includes a first detachable communication module structure configured to block light between an inside and an outside. The first detachable communication module structure may include: a first terminal on the outside; a second terminal on the outside; a first master light emitter attached to a first surface of the inside and coupled to the first terminal; and a first slave light receiver attached to a second surface of the inside and coupled to the second terminal, the first surface being opposite to the second surface.
BOPI
Sede Electrónica
