Resumen de: US2025385317A1
A secondary battery and an electric device. The secondary battery includes a negative electrode sheet and an electrolyte, where the negative electrode sheet includes a negative electrode current collector and a negative electrode active layer located on at least one surface of the negative electrode current collector, the negative electrode active layer includes graphite, and the areal density of the negative electrode active layer is 0.09 mg/mm2 to 0.16 mg/mm2; the lithium ion conductivity of the electrolyte at 25° C. is 10 mS/cm to 20 mS/cm; and the electrolyte includes a first solvent, the first solvent having a general structural formula of R1-COO—R2, where R1 and R2 are each independently selected from any one of C1-C5 alkyl and C1-C5 haloalkyl.
Resumen de: US2025385311A1
An electrolytic solution, a secondary battery and an electric device are described. The components of the electrolyte comprise a functional compound represented by formula (1). In formula (1), T1-T3 are each independently selected from any one of an alkyl group having 1-10 carbon atoms, an alkenyl group having 2-10 carbon atoms, an alkynyl group having 2-10 carbon atoms, and groups represented by following formulae (a)-(f). Among T1-T3, at least one is selected from the group represented by formula (a), and at least one is selected from the group represented by formula (b), (c), (d) or (e). In a charging/discharging process of the electrolyte, the functional compound represented by formula (1) can capture an oxidation product and improve the toughness of a formed SEI film, thereby improving the cycle performance of a secondary battery.
Resumen de: US2025385306A1
A fluorinated gel polymer electrolyte for a vehicle battery cell, a battery cell, and a method of forming a fluorinated gel polymer electrolyte. The fluorinated gel polymer electrolyte includes a polymerized gel polymer electrolyte precursor. The gel polymer electrolyte is involatile up to 150 degrees Celsius. The gel polymer electrolyte precursor includes a lithium salt present in the range of 10 to 50 percent by weight of the total weight of the of the gel polymer electrolyte precursor, a fluorinated monomer present in the range of 10 to 50 percent by weight of the total weight of the gel polymer electrolyte precursor, and a non-aqueous organic solvent present in the range of 50 to 90 percent by weight of the total weight of the gel polymer electrolyte precursor.
Resumen de: US2025385309A1
An electrolyte for a lithium secondary battery according to the present disclosure includes: a lithium salt; an organic solvent; an additive comprising a compound including a carbon-carbon triple bond, a linear ether group, and a 4- or 5-membered cyclic ether group; and a sulfur compound including a sulfur-containing heterocyclic structure.
Resumen de: US2025385368A1
Provided are a case, a battery, an electric device and a method for assembling a case. The case comprises a frame and an end plate connected to the frame, wherein the end plate comprises a first connecting portion and a second connecting portion both facing the frame; a circumferential edge of the first connecting portion and a circumferential edge of the second connecting portion are both connected to the frame; and the whole circumferential edge of at least one of the first connecting portion and the second connecting portion is continuously in sealed connection with the frame. The end plate and the frame are connected in a dual-connection fastening method in which the first connecting portion and the second connecting portion are configured to respectively connect to the frame, such that the case has a simple structure, and has a high assembly efficiency, a low cost and good reliability.
Resumen de: US2025385293A1
The present invention relates to a secondary battery in which an electrode tab is improved in mechanical strength and a method for manufacturing the same. Also, the secondary battery according to the present invention includes: an electrode provided with a coating portion coated with an active material on an electrode collector and a non-coating portion on which the active material is not applied to the electrode collector in a longitudinal direction of the electrode collector and a notching tab part extending from the coating portion in a width direction of the electrode collector without coating with the active material and overlapping each other to form two or more layers when the electrode is wound.
Resumen de: US2025385292A1
The present invention relates to a secondary battery in which an electrode tab is improved in mechanical strength and a method for manufacturing the same. Also, the secondary battery according to the present invention includes: an electrode provided with a coating portion coated with an active material on an electrode collector and a non-coating portion on which the active material is not applied to the electrode collector in a longitudinal direction of the electrode collector and a notching tab part extending from the coating portion in a width direction of the electrode collector without coating with the active material and overlapping each other to form two or more layers when the electrode is wound.
Resumen de: US2025381831A1
The present invention relates to a perfected battery (1) for vehicles, comprising: a housing (2) bounded by a cover (3) and configured to receive inside: a battery pack (4) configured to store electrical energy and power a motor-alternator (8) of said vehicle, anda service battery (5) in electrical communication with said motor-alternator (8) and configured to: store electrical energy, andpower the services of the vehicle,an inverter (6) configured to: put said batteries (5, 6) and said motor-alternator (8) in electrical communication with each other,regulate the delivery of electrical energy from said battery pack (4) to said motor-alternator (8) so that the latter exerts a predefined driving torque on a transmission of the vehicle.
Resumen de: US2025383241A1
Disclosed are an apparatus and method for a state of a battery cell. The apparatus diagnoses the state of the battery cell with high accuracy by dividing the battery cell into a plurality of regions, constructing a Randle circuit for each region, determining a current value and a resistance value of each region based on the Randle circuit, determining the amount of internal heat generation of each region by using the current value and the resistance value, determining an amount of heat transfer and an amount of heat convection of each region based on an outside temperature value and a previous temperature value of each region, estimating a temperature of each region based on the amount of internal heat generation, the amount of heat transfer, and the amount of heat convection of each region, and diagnosing the state of the battery cell by using the temperature of each region.
Resumen de: US2025383405A1
A high-voltage sampling circuit includes a high-voltage MOS transistor and a battery sampling device. An output terminal of the battery sampling device is connected to a gate of the high-voltage MOS transistor and is configured to output a high or low level; an analog-to-digital conversion terminal thereof is connected to a source of the high-voltage MOS transistor and is configured to collect a voltage at the source of the high-voltage MOS transistor. A drain of the high-voltage MOS transistor is connected to the positive electrode of the battery pack through a first voltage-dividing resistor, and the source thereof is connected to the negative electrode of the battery pack through a second voltage-dividing resistor. The battery sampling device is configured to, when outputting a high level to the high-voltage MOS transistor, collect the voltage passing through the MOS transistor and convert the voltage to obtain a supply voltage of the battery pack.
Resumen de: US2025383409A1
A diagnosis device for an on-vehicle secondary battery includes a storage element that stores a database in which the model of a vehicle and nominal battery capacity are associated with the model of the secondary battery, and correlation data indicative of a correlation between voltage, current, and temperature values for each model of the secondary battery, and the degradation state of the secondary battery. An acquisition processing element refers to the database to acquire the model of the secondary battery based on the model of the vehicle and a value of the nominal battery capacity of the secondary battery, and acquires voltage, current, and temperature values while the secondary battery is charging or discharging. A determination processing element determines the degradation state of the secondary battery using the correlation data corresponding to the model of the secondary battery based on the voltage, current, and temperature values of the secondary battery.
Resumen de: US2025383408A1
The present invention provides a server for diagnosing a defect in a battery, the server including a server communication unit configured to receive battery data including at least one of a battery voltage, a battery current, and a battery temperature, which is a temperature of the battery, from a battery management system (BMS); a server storage unit configured to store a plurality of internal resistance values of the battery calculated based on the battery data at each diagnosis time point for diagnosing the defect in the battery; and a server control unit configured to extract a plurality of previous diagnosis time points corresponding to a predetermined number of samples based on a diagnosis time point, calculate a moving average, compare an internal resistance value with an upper band threshold, and a lower band threshold, and diagnose the defect in the battery.
Resumen de: US2025383402A1
A relay failure diagnosing method is a relay failure diagnosing method for an electricity storage device system that includes multiple electricity storage device packs. The relay failure diagnosing method is executed by a controller. The relay failure diagnosing method includes diagnosis processing and change processing. In the diagnosis processing, a failure of a relay is diagnosed for one or some of the multiple electricity storage device packs at startup of the electricity storage device system. In the change processing, an electricity storage device pack that is to be a target of failure diagnosis is changed.
Resumen de: US2025383149A1
Provided is an orthogonal-axis power transmission device. The orthogonal-axis power transmission device according to an embodiment of the present inventive concept includes: a main structure assembly forming an exterior structure and having a space portion formed therein, the space portion being sealed; an input shaft assembly connected to one side of the main structure assembly, and to which rotational power of a motor is input; an output shaft assembly connected to the other side of the main structure assembly intersecting the input shaft assembly, and from which the rotational power of the motor is output; and a link assembly for changing a power transmission direction arranged to operate in the space portion of the main structure assembly to prevent propagation of noise or vibration, connected to the input shaft assembly and the output shaft assembly within the main structure assembly by a link method, and changing the power transmission direction from the input shaft assembly to the output shaft assembly.
Resumen de: US2025383145A1
A method of manufacturing ceramic tape includes a step of directing a tape of partially-sintered ceramic into a furnace. The tape is partially-sintered such that grains of the ceramic are fused to one another yet the tape still includes at least 10% porosity by volume, where the porosity refers to volume of the tape unoccupied by the ceramic. The method further includes steps of conveying the tape through the furnace and further sintering the tape as the tape is conveyed through the furnace. The porosity of the tape decreases during the further sintering step.
Resumen de: US2025383404A1
The present disclosure provides apparatuses and methods of performing controlling actions. The method includes charging a battery having a cathode. The cathode includes a redox indicator. The battery is discharged, where discharging the battery includes identifying a potential drop of the redox indicator. The controlling action is performed based on the potential drop.
Resumen de: DE102024117040A1
Die Erfindung betrifft eine Elektrode (10, 10') für eine Batteriezelle (28), umfassend einen ein elektrisch leitendes Material aufweisenden Stromleiter (12, 12') mit mindestens einer Kontaktoberfläche (14, 14') zum Bilden eines Kontakts zwischen dem Stromleiter (12, 12') und einem batteriechemischen Medium (16, 16'). Der Stromleiter (12, 12') weist im Bereich der mindestens einen Kontaktoberfläche (14, 14') eine Kontaktstruktur zur Verbesserung des Kontakts zwischen dem Stromleiter (12, 12') und dem batteriechemischen Medium (16, 16') auf. Mit der Elektrode (10, 10') kann die Performance von Batterien mit hoher Energiedichte verbessert und deren Lebensdauer verbessert werden.
Resumen de: DE102025122852A1
Zur Bereitstellung einer zylindrischen Batterie, die ein Sicherheitsventil aufweist, das geeignet ist, eine unbeabsichtigte Stromunterbrechung und Wiederleitfähigkeit nach einer Stromunterbrechung im Falle einer Batterieabnormalität geeignet zu unterdrücken. Eine zylindrische Batterie, die eine obere Abdeckung und ein Sicherheitsventil aufweist, wobei das Sicherheitsventil eine Sicherheitsabdeckung und eine Abreißscheibe aufweist, die in einer Batterieaxialrichtung nach innen von der Sicherheitsabdeckung angeordnet ist, und ein vorbestimmter Abschnitt der Sicherheitsabdeckung, der zwischen einem Abschnitt, an dem die Sicherheitsabdeckung und die obere Abdeckung miteinander in Kontakt sind, und einem Abschnitt, an dem die Sicherheitsabdeckung und die Abreißscheibe miteinander in Kontakt sind, angeordnet ist, ein geneigter Abschnitt ist, der in einer Batterieaxialrichtung nach innen geneigt ist in Bezug auf eine Kontaktfläche, an der die Sicherheitsabdeckung und die obere Abdeckung miteinander in Kontakt sind.
Resumen de: DE102024116842A1
Ein Akkupack (1) für ein Elektrogerät weist eine Pouch-Zelle (2, 2') und ein Wärmeableitelement (3, 3') auf, das auf einer Seite der Pouch-Zelle (2, 2') zur Ableitung von durch die Pouch-Zelle (2, 2') erzeugter Wärme angeordnet ist, sowie eine Glimmerplatte (4, 4', 6, 6'), die zwischen der Pouch-Zelle (2, 2') und dem Wärmeableitelement (3, 3') angeordnet ist.
Resumen de: DE102025122587A1
Eine Festkörperbatterie nach der vorliegenden Offenbarung umfasst einen Elektrodenkörper, Stromsammellaschen, die mit dem Elektrodenkörper verbunden sind, und ein Schutzelement. Der Elektrodenkörper hat einen Positivelektrodenstromsammler, eine Positivelektrodenaktivmaterialschicht, eine Festelektrolytschicht, eine Negativelektrodenaktivmaterialschicht und einen Negativelektrodenstromsammler, die entlang einer Laminierrichtung laminiert sind. Die Festelektrolytschicht hat eine Stützeinrichtung, die eine Vielzahl von Fasern umfasst, die sich im Material vom Schutzelement unterscheiden. Die Stützeinrichtung steht von einer Endfläche der Festelektrolytschicht vor. Das Schutzelement ist mit der Stützeinrichtung verbunden und an der Endfläche angeordnet.
Resumen de: DE102024117001A1
Die vorliegende Erfindung betrifft ein Verfahren zur Folierung von Batteriezellen mittels einer Foliereinrichtung. Weiterhin betrifft die vorliegende Erfindung eine gemäß diesem Verfahren erhaltene oder erhältliche, mit einer Klebefolie ummantelte Batteriezelle.
Resumen de: DE102024116814A1
Die Erfindung betrifft ein Diagnoseverfahren (10) zur Ermittlung eines sich über die Alterung ändernden Leistungszustandes einer Batteriezelle (3) eines Fahrzeugs (1), aufweisend die Schritte:- Anregen (11) der Batteriezelle (3) mit einem ersten Diagnosestromsignal (24) zur Erzeugung eines ersten Antwortsignals (12) der Batteriezelle innerhalb eines Entladevorgangs (20) und/oder während der Fahrt (20),- Erfassen (13) des ersten Antwortsignals (12) während des Entladevorgangs (20) und/oder während der Fahrt (20), gekennzeichnet durch- Anregen (14) der Batteriezelle (3) mit einem zweiten Diagnosestromsignal (34) zur Erzeugung eines zweiten Antwortsignals (15) der Batteriezelle (3) vor einer Ladephase (35) der Batteriezelle (3), während einer Ladephase (35) der Batteriezelle (3) und/oder in einem Stillstand (30) des Fahrzeugs (1),- Erfassen (16) des zweiten Antwortsignals (15) im Stillstand (30), wobei das Erfassen (14) des zweiten Antwortsignals (15) bei einem gleichen Ladezustand (SOC) wie das Erfassen (13) des ersten Antwortsignals (12) erfolgt, und- Bestimmen (17), insbesondere Berechnen unter Verwendung eines Ersatzschaltbildes (50), des Leistungszustandes mit dem ersten Antwortsignal (12) und dem zweiten Antwortsignal (15).
Resumen de: DE102024116759A1
Die Erfindung betrifft ein Verfahren zum Erzeugen einer Kanalstruktur (12) in einem Gehäuse einer Wärmetauschereinheit (20). Dabei wird eine zur Kanalstruktur (12) geometrisch korrespondierende Kernstruktur (10) aus einem pulverförmigen und/oder granularem Material (14) und einem Bindemittel (16) erzeugt, das Gehäuse (24) der Wärmetauschereinheit (20) derart ausgebildet, dass die Kernstruktur (10) in einem Inneren (34) des Gehäuses (24) eingeschlossen ist und mindestens eine Zugangsöffnung (30) in der Wärmetauschereinheit (20) zwischen einer Umgebung und dem Inneren (34) der Wärmetauschereinheit (20) bereitgestellt ist und die Kernstruktur (10) durch Zerkleinern und/oder Verflüssigen verändert und die veränderte Kernstruktur (10) aus dem Inneren (34) durch die mindestens eine Zugangsöffnung (30) entfernt.
Resumen de: DE102024117049A1
Sicherheitssystem (1) für eine Batterieeinrichtung (2) für ein wenigstens teilweise elektrisch angetriebenes Kraftfahrzeug (10) mit einem Störfallüberwachungssystem (3) zur Erkennung eines thermischen Durchgehens einer Batterieeinheit (12) der Batterieeinrichtung (2). Dabei erkennt das Störfallüberwachungssystem (3) das thermische Durchgehen aufgrund eines mittels einer Auslöseeinheit (4) provozierten Isolationsfehlers. Die Auslöseeinheit (4) provoziert den Isolationsfehler mittels wenigstens einer Kontaktstruktur (14), welche durch die Wärmeeinwirkung des thermischen Durchgehens ihre Form definiert ändert und dadurch einen Kontakt zwischen wenigstens zwei im Normalbetrieb voneinander isolierten Batteriekomponenten (5, 15) herstellt.
Nº publicación: DE102024116389A1 18/12/2025
Solicitante:
BAYERISCHE MOTOREN WERKE AG [DE]
Bayerische Motoren Werke Aktiengesellschaft
Resumen de: DE102024116389A1
Die Erfindung betrifft eine Hitzeschutzeinrichtung (11) für Batteriezellen (21, 22) eines Hochvoltspeichers (10), aufweisend wenigstens ein zwischen zwei Batteriezellen (21, 22) anordenbares Hitzeschutzelement, wobei das Hitzeschutzelement (13, 14) mittels wenigstens einer Halteeinrichtung (23) der Hitzeschutzeinrichtung (11) zwischen den Batteriezellen (21, 22) gelagert ist.