Resumen de: US20260088288A1
A lithium secondary battery according to exemplary embodiments may include a cathode which includes: a cathode current collector, and a cathode active material layer formed on the cathode current collector and including cathode active material particles; and an anode disposed to face the cathode. The cathode active material particles may include activated over-lithiated oxide particles and a coating material formed on at least a portion of the surface of the activated particles and containing a coating element. An upper limit of operation voltage of the lithium secondary battery may be 4.5 V or less relative to the oxidation-reduction potential of lithium.
Resumen de: US20260088268A1
The present invention relates to a method for forming an SEI layer on an anode by using a non-electrochemical process for alkaliating anodes, resulting in reductions of the manufacturing capital requirements, time investments and energy consumed during industrial battery production.
Resumen de: US20260088349A1
An ionically conductive polymer for a gel polymer electrolyte including m repeat units according to formula (1) and n repeat units according to formula (II)wherein R1 is (CH2)x—R3, wherein x is between 1 and 20 and R3 is H or CN; R2 and R5, individually, are C1-C10 alkyl or C2-C1 alkenyl; M is an alkali metal or an alkaline earth metal; the ratio of m to n (m/n) is between 25:1 and 1:25; and m+n is q, wherein q is between 50 and 5000. Also, a gel polymer electrolyte including the ionically conductive polymer, and method of producing the ionically conductive polymer.
Resumen de: US20260088294A1
Provided is a positive electrode including a positive electrode current collector; and a positive electrode active material layer located on the collector and including a positive electrode active material, a copolymer binder, and an amine. The copolymer binder includes a first structural unit including a carboxyl group and a nonionic second structural unit, and the carboxyl group and the amine are present in a form of a salt. The positive electrode increases capacity while reducing production cost, thereby ensuring long cycle-life characteristics and improving high-voltage characteristics and high-temperature storage characteristics. The rechargeable lithium battery including the positive electrode may exhibit high initial charge/discharge capacity and efficiency even under high voltage driving conditions, and can achieve long cycle-life characteristics.
Resumen de: US20260088371A1
A traction battery for a motor vehicle, with a battery housing in which a battery cell is arranged, which is electrically connected via an electrical connection device to an electrical battery connection of the traction battery and/or to a further battery cell also arranged in the battery housing. A gas sensor for detecting at least one gas component of a gas present in the battery housing is arranged on the connection device and is electrically connected via the connection device to a battery control device.
Resumen de: US20260088297A1
An ionically conductive polymeric binder for a cathode including m repeat units according to formula (I) and n repeat units according to formula (II)wherein R1 is (CH2)x—R3, wherein x is between 1 and 20 and R3 is H or CN; R2 and R5, individually, are C1-C10 alkyl or C2-C10 alkenyl; M is an alkali metal or an alkaline earth metal; the ratio of m to n (m/n) is between 25:1 and 1:25; and m+n is q, wherein q is between 50 and 5000. Also, a cathode including the ionically conductive polymeric binder, and a method of producing the ionically conductive polymeric binder.
Resumen de: US20260088293A1
A halogen-free polymeric binder for a cathode according to formula (I)wherein R1 is (CH2)x—R3, wherein x is between 1 and 20 and R3 is H or CN; R2 is C1-C10 alkyl or C2-C10 alkenyl, and n is between 50 and 5000. Also, a cathode including the halogen-free polymeric binder, and a method of producing the halogen-free polymeric binder.
Resumen de: US20260088290A1
Provided are a positive active material for a lithium secondary battery, a method of preparing the positive active material, a positive electrode for a lithium secondary battery including the positive active material, and a lithium secondary battery including a positive electrode including the positive active material, in which the positive active material may include a nickel-based lithium metal oxide secondary particle including a plurality of large primary particles, the nickel-based lithium metal oxide secondary particle may have a hollow structure having a pore inside, a size of each of the large primary particles may be in a range of about 2 micrometers (μm) to about 6 μm, and a size of the nickel-based lithium metal oxide secondary particle may be in a range of about 10 μm to about 18 μm.
Resumen de: US20260088292A1
A negative electrode active material, a negative electrode for a rechargeable lithium battery including the same, and a method for preparing the same are provided. A negative electrode active material includes a carbon-based material, and a surface modifier on a surface of the carbon-based material, where the surface modifier includes a polar functional group, and the polar functional group contains at least one of a carboxyl group, an amine group, a thiol group, and/or a combination thereof.
Resumen de: US20260088287A1
A main object of the present disclosure is to provide an electrode active material capable of suppressing the volume change of the electrode layer. The present disclosure achieves the object by providing an electrode active material including a secondary particle that is an aggregation of a plurality of primary particle, wherein the primary particle is a Si-based active material containing a Si element, and a particle size D10 (μm) and a particle size D50 (μm) of the secondary particle satisfy the specified formula (1).
Resumen de: US20260088286A1
A cathode active material for a lithium secondary battery according to exemplary embodiments of the present invention includes a lithium metal oxide particle core part and an organic compound coating layer which includes a functional group containing a sulfur atom. The cathode active material may suppress side reactions with an electrolyte while maintaining the stability of the layered structure of the lithium metal oxide particles, suppress a gelation phenomenon of the slurry during manufacturing a cathode, and maintain the high energy, high output and long life-span characteristics of the lithium secondary battery.
Resumen de: US20260088285A1
An anode active material for a secondary battery includes a plurality of composite particles. The composite particles include carbon-based particles containing pores therein. A silicon-containing coating layer is formed inside the pores or on a surface of the carbon-based particles. A surface oxide layer is formed on the silicon-containing coating layer. The surface oxide layer contains silicon oxide. A silicon oxidation number ratio of the composite particle is predefined.
Resumen de: US20260088289A1
The present invention relates to an electrochemical cell comprising an anode, a polymer electrolyte and an NMC type cathode active material. The polymer electrolyte comprises an electrolyte composition, preferably comprising a deep eutectic solvent (DES), and a polymer network having a polyacrylamide backbone.
Resumen de: US20260088291A1
A coated active material according to the present disclosure includes: a positive electrode active material; and a coating layer coating at least a portion of a surface of the positive electrode active material. The coating layer includes a compound including Li, M, and F. In the compound, the M is at least one element selected from the group consisting of metalloid elements and metal elements other than Li. An amount of F in the compound per unit surface area of the positive electrode active material is 10 mg/m2 or more and 280 mg/m2 or less.
Resumen de: US20260088284A1
A secondary battery positive electrode material, relating to the field of battery materials. The secondary battery positive electrode material comprises large particles with particle size of ≥2 μm and small particles with particle size of ≤1 μm. The surfaces of some of the small particles are provided with a carbon coating layer; and the surfaces of some of the large particles are not provided with a carbon coating layer. According to the positive electrode material, by means of gradation design of the large and small particles, the compaction density is improved. Moreover, the surfaces of the small particles are coated with a carbon layer to provide sufficient electron transport paths. Additionally, the surfaces of the large particles are not hindered by a carbon coating layer, so that the impedance in a charge and discharge process can be reduced.
Resumen de: US20260088282A1
Disclosed are positive electrodes and rechargeable lithium batteries. The positive electrode includes a current collector, a first active material layer on the current collector, and a second active material layer on the first active material layer. The first active material layer includes a first particle including a layered positive electrode active material, a second particle including an olivine-based active material, a first conductive material; and a first binder. The second active material layer includes the second particle, a second conductive material, and a second binder. An amount of the first particle in the first active material layer is equal to or greater than about 70% and equal to or less than about 90%.
Resumen de: US20260088283A1
Disclosed are a positive electrode active material for an all-solid-state rechargeable battery, a method of preparing the positive electrode active material, and an all-solid-state rechargeable battery. The positive electrode active material includes a first positive electrode active material including a first lithium nickel-based composite oxide particle in a form of secondary particles formed by agglomeration of primary particles. A first coating layer is disposed on surfaces of the first lithium nickel-based composite oxide particles and includes boron. A second coating layer is disposed on the first coating layer and includes zirconium. The positive electrode active material also comprises a second positive electrode active material comprising a second lithium nickel-based composite oxide particle in a form of single particles. A third coating layer is disposed on surfaces of the second lithium nickel-based composite oxide particles and includes zirconium.
Resumen de: US20260088281A1
Provided are a positive electrode active material, a positive electrode plate, a battery cell, a battery and an electrical apparatus, which belongs to the technical field of secondary batteries. The positive electrode active material includes a lithium-rich manganese-based material and a lithium-containing phosphate, in which, the lithium-rich manganese-based material includes solid particles and hollow particles, the hollow particle including a shell and a cavity provided inside the shell. Both the rate performance and the volume energy density of the battery cell can be taken into consideration in the technical solution.
Resumen de: US20260088279A1
A method of making negative electrode material having silicon and silicate includes the steps of providing raw materials for contact-fusion, heating the raw materials to form materials with a contact-fusion state, mixing silicon and the materials after forming contact-fusion to form a composite material, and vaporizing the composite materials on the deposition zone after the mixing step. The heating step is performed at the temperatures between the lowest melting temperature of the materials with the contact-fusion state and 1400° C. The deposited composite materials can be optionally heat treated, pulverized, and/or coated with carbon. Also provided is a negative electrode material of silicon and silicate made from the steps described above. The negative electrode material of silicon and silicate can be an Li—Mg silicate having silicon powder dispersed therein, the Li—Mg silicate forming a uniform interface on surfaces of the silicon powder.
Resumen de: US20260088277A1
Embodiments of this application provide a negative electrode plate, a battery cell, a battery, and an electric apparatus. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer disposed on at least one side of the negative electrode current collector; where the negative electrode film layer includes a negative electrode active material and a binder, the negative electrode active material includes a silicon-based material, and the binder includes at least one of the following functional groups: hydroxyl, carboxyl, amino, cyano, ester, or vinyl. The technical solution of this application can improve cohesion and adhesion of the negative electrode plate, reducing powder shedding and demolding during production, thereby enhancing cycling performance of the battery.
Resumen de: US20260088274A1
The present disclosure relates to a charging-discharging apparatus and a method of controlling thereof according to an embodiment of the present disclosure includes: a stage portion including a plurality of arrangement regions for accommodating each of a plurality of battery groups grouping neighboring battery cells among a plurality of battery cells and a plurality of temperature sensor for measuring the temperature of the plurality of arrangement regions; a charging-discharging module configured to charge and discharge the plurality of battery cells; a plurality of blowers configured to flow air toward the plurality of arrangement regions; and a controller to configured to control the plurality of temperature sensors and the plurality of blowers; wherein the controller individually may change the airflow, which is the air rate per unit time of the plurality of blowers, based on each measured temperature measured by the plurality of temperature sensors.
Resumen de: US20260088275A1
A battery manufacturing method according to the present disclosure includes: (A) performing charge/discharge processing on a power generation element including a positive electrode layer, a negative electrode layer, and an electrolyte layer located between the positive electrode layer and the negative electrode layer in a state where the power generation element is restrained in a stacking direction; and (B) decreasing a restraining pressure on the power generation element after the charge/discharge processing in the (A). At least one electrode layer selected from the group consisting of the positive electrode layer and the negative electrode layer includes an electrode active material having a coefficient of volumetric expansion in a charged state relative to a discharged state of 2% or more and 14% or less.
Resumen de: DE102024127334A1
Verfahren zur Reparatur einer Kühlvorrichtung (1) in einem Hochvoltspeicher, insbesondere für ein Kraftfahrzeug, umfassend die Schritte:- Durchführen einer Dichtigkeitsprüfung wenigstens einer Verbindungsmuffe, die zwei Stutzen (2, 3) benachbarter Kühlplatten (4, 5) miteinander verbindet;- Bestimmen wenigstens einer undichten Verbindungsmuffe;- Entfernen der undichten Verbindungsmuffe von den Stutzen (2, 3) der benachbarten Kühlplatten (4, 5);- Anordnen einer Reparaturmuffe (6) auf den Stutzen (2, 3), wobei die Reparaturmuffe (6) wenigstens zwei Teilmuffen (7), insbesondere Halbschalen, aufweist, die an wenigstens einer Stelle in Umfangsrichtung voneinander getrennt sind.
Resumen de: DE102024127697A1
Die vorliegende Erfindung betrifft ein Verfahren und ein System zum Austausch von defekten Batteriezellen, umfassend eine Zellhülle und ein Zellinneres, in einem Batteriespeicher, der eine Anordnung aus zylindrischen Batteriezellen umfasst, deren Längsachsen zueinander parallel angeordnet sind, umfassend folgende Schritte: Bestimmen einer Position einer defekten Batteriezelle; Entfernen der defekten Batteriezelle oder des Zellinneren der defekten Batteriezelle in Richtung der Längsachse aus dem Batteriespeicher unter Bildung eines zylinderförmigen Hohlraums mit einem Umfang; Einsetzen einer neuen Batteriezelle in den zylinderförmigen Hohlraum an der Stelle der entfernten Batteriezelle oder des entfernten Zellinneren.
Nº publicación: DE102024131943A1 26/03/2026
Solicitante:
GM GLOBAL TECH OPERATIONS LLC [US]
GM Global Technology Operations LLC
Resumen de: DE102024131943A1
Ein Energiespeichersystem für ein Elektrofahrzeug umfasst mehrere Batteriemodule, mehrere Gleichspannungs-Leistungsumsetzer, einen Gleichstrombus, der konfiguriert ist, Leistung an eine oder mehrere Lasten zu liefern, und ein Fahrzeugsteuermodul, das konfiguriert ist, eine Temperatur jedes der mehreren Gleichspannungs-Leistungsumsetzer zu erhalten, einem ersten der mehreren Gleichspannungs-Leistungsumsetzer mit einer niedrigsten Temperatur einen ersten Ausgangsspannungssollwert zuzuweisen, und als Antwort darauf, dass die Temperatur des ersten der mehreren Gleichspannungs-Leistungsumsetzer größer oder gleich der Temperatur eines anderen der mehreren Gleichspannungs-Leistungsumsetzer ist, einem zweiten der mehreren Gleichspannungs-Leistungsumsetzer einen zweiten Ausgangsspannungssollwert zuzuweisen und den Ausgangsspannungssollwert des ersten der mehreren Gleichspannungs-Leistungsumsetzer auf einen Wert, der kleiner ist als der zweite Ausgangsspannungssollwert, zu reduzieren.