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1509
resultados
Última actualización
17/03/2026 [07:16:00]
Resultados 275 a 300 de 1509
Resumen de: WO2026051280A1
A cell balancing method, apparatus and device, a readable storage medium and a program product. The method comprises: determining whether a voltage difference between a cell in a battery pack that has the highest current voltage and the remaining cells meets a balancing enabling condition; if the voltage difference meets the balancing enabling condition, entering a first balancing stage, wherein in the first balancing stage, the cell which has the highest current voltage is used to charge, by using a first current, a cell which has the lowest current voltage; and after the first balancing stage is entered, if the voltage difference does not meet the balancing enabling condition, entering a second balancing stage, wherein in the second balancing stage, the cell which has the highest current voltage is used to charge, by using a second current, the cell which is charged by means of the first current in the first balancing stage, and the second current is less than the first current. In the solution disclosed in the present application, the cell which is charged by means of the first current is charged by using a small current, so as to compensate for capacity loss caused by self-discharging of the cell, and reduce the depth of charging and discharging and heat generation of the cell; thus, falsely high capacity and voltage of the cell are avoided, such that the cell can maintain a good state of health.
Resumen de: WO2026051266A1
The present application provides a nitrogen-containing branched polymer, an anion exchange resin, an anion exchange membrane, and an electrochemical device. The nitrogen-containing branched polymer comprises a nitrogen-containing heterocyclic ring, a branched structure and an aryl, wherein the number of branching points of each branched structure is not less than 3, and the aryl is linked with the branching points of the branched structure by means of the nitrogen-containing heterocyclic ring. The molar ratio of the aryl to the branched structure in the nitrogen-containing branched polymer is A:B = 80-99:1-20. The nitrogen-containing branched polymer satisfies: PDI≤2.6, and has a weight-average molecular weight of 40,000 g/mol to 50,000 g/mol.
Resumen de: WO2026051628A1
A secondary battery and an electronic apparatus. The secondary battery comprises: a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode comprises a positive electrode current collector, and an insulating layer and a positive electrode material layer which are provided on the positive electrode current collector; and the insulating layer comprises boehmite, the positive electrode material layer comprises lithium iron phosphate and lithium manganate, and the electrolyte comprises lithium difluorophosphate. The present application not only improves the floating charge safety of secondary batteries, but also reduces the rate of particle fragmentation.
Resumen de: US20260074215A1
The present disclosure relates to a positive electrode active material including: a lithium nickel-based transition metal oxide with a large particle diameter and a lithium nickel-based transition metal oxide with a small particle diameter. The lithium nickel-based transition metal oxide with a large particle diameter is a secondary particle. The lithium nickel-based transition metal oxide with a small particle diameter is a single particle formed of one nodule and/or a quasi-single particle that is a composite of 30 or less nodules. The lithium nickel-based transition metal oxide with a large particle diameter has a D50 of 5 μm to 30 μm, a Z value defined by factors of roundness distribution characteristics of 1.0 to 9.0, and a negative skewness factor (NSF) of 0.1 to 0.9. Use of the positive electrode active material in a lithium secondary battery results in improved lifespan and/or output characteristics of the battery.
Resumen de: US20260074212A1
A positive electrode active material for lithium-ion batteries may include a compound represented by the general formula Li1.10-aMn0.52+aNi0.38-xCoxO2 wherein 0
Resumen de: US20260074213A1
A cathode for a lithium secondary battery according to exemplary embodiments may include: a cathode current collector; and a cathode active material layer formed on the cathode current collector. The cathode active material layer may include: a first cathode active material layer formed on the cathode current collector, and including first lithium metal oxide particles having a form of secondary particles; a second cathode active material layer formed on the first cathode active material layer, and including second lithium metal oxide particles having a form of single particles; and a third cathode active material layer formed on the second cathode active material layer, and including third lithium metal oxide particles having a form of secondary particles.
Resumen de: US20260074227A1
The present disclosure relates to an electrode for a secondary battery and a secondary battery including the electrode. According to embodiments of the present disclosure, the electrode for a secondary battery includes: an electrode current collector, a first electrode active material layer disposed on the electrode current collector, and including a first electrode active material, a first binder including a fluorine-based binder and a first solid electrolyte; and a second electrode active material layer disposed on the first electrode active material layer, and including a second electrode active material, a second binder including a hydrocarbon-based binder and a second solid electrolyte.
Resumen de: US20260074217A1
A cathode active material for secondary battery according to the present disclosure includes lithium metal oxide particles. The lithium metal oxide particles include nickel, include or do not include cobalt, and have a single particle structure. Based on a total number of moles of elements excluding lithium and oxygen in the lithium metal oxide particles, a content of nickel is 70 mol % to 85 mol %, and a content of cobalt is 0.1 times or less than the content of nickel. A (104) plane grain size of the lithium metal oxide particles calculated through X-ray diffraction (XRD) analysis is 400 nm to 700 nm.
Resumen de: WO2026054174A1
The present invention provides a cost-effective electrode tab inspection apparatus for quickly and accurately determining whether a stacked electrode tab is defective, and an electrode tab inspection method using same, the electrode tab inspection apparatus comprising: an imaging unit that images the electrode tab through transmission; an edge setting unit that sets edges for portions where color or brightness changes in an imaging result of the imaging unit; and a classification unit that classifies the edges set by the edge setting unit into edges related to stability and edges unrelated to stability.
Resumen de: WO2026054175A1
An all-solid-state battery includes a laminate with a positive electrode layer, a solid electrolyte layer, and a negative electrode layer stacked along a first direction. A first external electrode is disposed outside the laminate and connected to the positive electrode layer, while a second external electrode is disposed outside the laminate and connected to the negative electrode layer. A through-hole is located in a central portion of the laminate along the first direction, and the outer circumference of the laminate includes a curved portion when viewed in the first direction.
Resumen de: WO2026054221A1
The present invention relates to a composition for forming a protective film that is capable of protecting the surface of an electrode for a lithium secondary battery so as to prevent the growth of dendrites and improve the lifespan of the battery.
Resumen de: WO2026054104A1
Provided is a method for producing a lithium transition metal composite oxide using a positive electrode recovered from a used lithium ion battery. This method for producing a lithium transition metal composite oxide includes the following steps for: (1) preparing a cathode composite recovered from a used lithium-ion battery; (2) cleaning the lithium transition metal composite oxide in the prepared cathode composite; (3) kneading the cleaned lithium transition metal composite oxide with a lithium compound; (4) calcining the kneaded material under prescribed conditions; and (5) cooling the calcined lithium transition metal composite oxide.
Resumen de: WO2026054103A1
Provided is a method for producing a lithium transition metal composite oxide using a positive electrode recovered from a used lithium-ion battery. The method for producing a lithium transition metal composite oxide includes the following steps. (1) A step for preparing a positive electrode recovered from a used lithium-ion battery. (2) A step for treating the positive electrode with radicals. (3) A step for removing a collector from the treated positive electrode and recovering a positive electrode mixture. (4) A step for recovering a lithium transition metal composite oxide from the recovered positive electrode mixture. (5) A step for washing the recovered lithium transition metal composite oxide. (6) A step for kneading the washed lithium transition metal composite oxide and a lithium compound. (7) A step for calcining the kneaded substance under prescribed conditions. (8) A step for cooling the calcined lithium transition metal composite oxide.
Resumen de: WO2026053439A1
Provided is a method for producing a lithium transition metal composite oxide using a cathode recovered from a used lithium-ion battery. The method for producing a lithium transition metal composite oxide includes the following steps. (1) A step for preparing a cathode recovered from a used lithium-ion battery; (2) a step for heating the cathode at a temperature range higher than the melting point of a binder and lower than a thermal decomposition initiation temperature; (3) a step for removing a current collector from the heated cathode and recovering a cathode mixture; (4) a step for recovering a lithium transition metal composite oxide from the recovered cathode mixture; (5) a step for washing the recovered lithium transition metal composite oxide; (6) a step for kneading the washed lithium transition metal composite oxide and a lithium compound; (7) a step for calcining the kneaded material under a predetermined condition; and (8) a step for cooling the calcined lithium transition metal composite oxide.
Resumen de: WO2026053421A1
The present invention is a control method for an electric vehicle, wherein: a first torque command value is output to a first motor for driving a first drive wheel; a second torque command value is output to a second motor for driving a second drive wheel different from the first drive wheel; and driving is performed by the first motor and the second motor receiving power supply from a battery. In the control method, when the temperature of the battery is lower than a predetermined first threshold temperature, a total torque command value obtained by adding the first torque command value and the second torque command value is output to the first motor, a three-phase short-circuit command for bringing the second motor into a three-phase short-circuit state is output to the second motor, a three-phase short-circuit torque generated in the second motor is estimated on the basis of a rotation state of the second motor, and the total torque command value is corrected on the basis of the three-phase short-circuit torque.
Resumen de: WO2026052026A1
An electrolyte additive, an electrolyte, a secondary battery, and an electronic apparatus. The electrolyte additive comprises a first component and a second component. The first component is selected from a compound represented by formula I, and the second component is selected from at least one of a compound represented by formula II, a compound represented by formula III, and a compound represented by formula IV. The synergistic effect of the first component and the second component can improve the high-temperature storage performance of the secondary battery and prolong the cycle life thereof.
Resumen de: WO2026052027A1
An electrolyte additive, an electrolyte, and a battery. The electrolyte additive comprises a first additive and a second additive. The first additive comprises a compound represented by formula (I). In formula (I), R1 is at least one F-substituted C1-C6 linear alkyl group. The second additive comprises an unsaturated carbonate substance.
Resumen de: WO2026051252A1
Provided in the present application are a precursor having a porous isolation layer, a positive electrode material, and the preparation therefor and the use thereof. The precursor comprises an inner core, a porous isolation layer covering the inner core, and an outer shell covering the porous isolation layer. The porosity of the porous isolation layer is higher than the porosities of the inner core and the outer shell. The precursor provided by the present application has the porous isolation layer, which blocks the propagation of micro-cracks and provides more space for release of stress built-up by volume expansion/contraction during deep charge and discharge processes, thereby ensuring that a positive electrode material prepared by the precursor has a stable structure and shape during cycle processes, and improving the cycle performance of batteries containing the positive electrode material prepared from the precursor.
Resumen de: WO2026051291A1
A secondary battery and a manufacturing method therefor, an electrode sheet, and an electric device (6). The secondary battery comprises an electrode sheet; the electrode sheet comprises a current collector and an electrode active layer disposed on at least one surface of the current collector; and the electrode active layer comprises an electrode active material and a polymer binder. The polymer binder comprises a core and a shell covering at least part of the surface of the core; at least one of the shell and the core comprises a polymer; both the shell and the core have hole structures; and the number of holes in the shell is greater than that of holes in the core.
Resumen de: WO2026051235A1
Disclosed in the present application is a battery liquid cooling system, comprising: a battery module formed by stacking a plurality of battery cells; a battery casing, an accommodation recess being provided in the battery casing, and the battery module being assembled in the accommodation recess; flow channel plates, located between at least two adjacent battery cells, liquid cooling flow channels being provided in each flow channel plate, and the liquid cooling flow channels being spaced apart from the battery cells, or each flow channel plate being attached to a side surface of a battery cell on at least one side to form liquid cooling flow channels; an immersion liquid inlet, a cooling liquid being introduced into the accommodation recess through the immersion liquid inlet; and an immersion liquid outlet, the immersion liquid outlet being in communication with the accommodation recess, and the liquid cooling flow channels being in communication with the accommodation recess.
Resumen de: US20260074224A1
A supramolecule and a rechargeable lithium battery including the supramolecule are provided. The supramolecule includes: a polymer having a functional group capable of hydrogen bonding; and an aromatic compound having two or more amine groups, wherein the functional group capable of hydrogen bonding of the polymer and the amine group of the aromatic compound form a hydrogen bond.
Resumen de: US20260074220A1
A positive electrode active material, a secondary battery, and an electric device are disclosed. The positive electrode active material satisfies the following relationship: 300≤P*D/Δθ≤800; where P represents the porosity of the positive electrode active material, with a unit of %; D represents the crystal plane dimension of the (110) crystal plane of the positive electrode active material, with a unit of Å; and Δθ represents a splitting degree between a diffraction angle of the (110) crystal plane and that of (108) crystal plane of the positive electrode active material, with a unit of °.
Resumen de: US20260074208A1
A negative electrode material 1000 of the present disclosure includes a negative electrode active material 111, a sulfide solid electrolyte 100, and a conductive additive 110. The negative electrode active material 111 includes a lithium vanadium oxide, a proportion of a volume of the negative electrode active material 111 to a sum of the volume of the negative electrode active material 111 and a volume of the sulfide solid electrolyte 100 is 40% or more and 80% or less, and a proportion of a volume of the conductive additive 110 to a sum of the volume of the negative electrode active material 111, the volume of the sulfide solid electrolyte 100, and the volume of the conductive additive 110 is more than 4.4% and 15% or less.
Resumen de: US20260074207A1
A vanadium oxide composite of the present disclosure includes: a particle including a vanadium oxide represented by a composition formula (1) Li3+x+aV1−xMxO4+a/2, and an electrically conductive material at least partially coating a surface of the particle. In the composition formula (1), 0
Nº publicación: US20260074206A1 12/03/2026
Solicitante:
THE TEXAS A&M UNIV SYSTEM [US]
THE TEXAS A&M UNIVERSITY SYSTEM
Resumen de: US20260074206A1
A highly scalable process has been developed for stabilizing large quantities of the zeta-polymorph of V2O5, a metastable kinetically trapped phase, with high compositional and phase purity. The process utilizes a beta-CuxV2O5 precursor which is synthetized from solution using all-soluble precursors. The copper can be leached from this structure by a room temperature post-synthetic route to stabilize an empty tunnel framework entirely devoid of intercalating cations. The metastable ζ-V2O5 thus stabilized can be used as a monovalent—(Li, Na) or multivalent—(Mg, Ca, Al) ion battery cathode material.
BOPI
Sede Electrónica
