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Hochvoltbatterie mit Schaltvorrichtung zum Beheizen der Hochvoltbatterie

Resumen de: DE102025114699A1

Die Erfindung betrifft ein Hochvoltsystem (1) für ein elektrifiziertes Kraftfahrzeug, aufweisend:- eine Hochvoltbatterie (2) mit mehreren Batteriezellen (3),- HV-Anschlüsse (HV+, HV-) zum Verschalten mit der Hochvoltbatterie (2),- eine mit den HV-Anschlüssen (HV+, HV-) verbundene Zwischenkreiskapazität (5),- eine Schaltvorrichtung (6), welche dazu ausgelegt ist, in einem ersten Schaltzustand eine erste Verschaltung der Batteriezellen (3) zum Bereitstellen einer ersten Batteriespannung der Hochvoltbatterie (2) an die HV- Anschlüsse (HV+, HV-) zu schalten und in einem zweiten Schaltzustand eine zweite Verschaltung der Batteriezellen (2) mit einer reduzierten zweiten Batteriespannung der Hochvoltbatterie (2) an die HV-Anschlüsse (HV+, HV-) zu schalten, und- eine Steuereinrichtung (7), welche bei einem Heizbedarf der Hochvoltbatterie (2) dazu ausgelegt ist, zumindest einen eine Temperatur der Hochvoltbatterie (2) erhöhenden Heizschaltzyklus der Schaltvorrichtung (6) bereitzustellen und hierfür die Schaltvorrichtung (6) zum Laden der Zwischenkreiskapazität (5) mit Ladung aus der Hochvoltbatterie (2) in den ersten Schaltzustand zu versetzen und zum Zurückspeisen der Ladung aus der Zwischenkreiskapazität (5) in die Hochvoltbatterie (2) in den zweiten Schaltzustand zu versetzen.

CYLINDRICAL BATTERY

Resumen de: WO2026216491A1

A cylindrical battery (1) comprises an electrode body (10) and an exterior can, and has a structure in which the lower end of a negative electrode (12) is connected to a negative electrode collector plate. The average value of the height differences Z1IN between the upper end position (11c) of a positive electrode mixture layer (11b) and the upper end position (12c) of a negative electrode mixture layer (12b) in five turns on the winding-start side of the electrode body (10) is 1.50 mm or more, is greater than the average value of the height differences Z2OUT between the lower end position (11d) of the positive electrode mixture layer (11b) and the lower end position (12d) of the negative electrode mixture layer (12b) in the five turns on the winding-start side of the electrode body (10), and is greater than the average value of the height differences Z1y in five turns on the winding-termination side of the electrode body (10).

BATTERIEMODUL

Resumen de: AT529199A1

Die Erfindung betrifft ein Batteriemodul mit zumindest einer Batterieeinheit (1, 2) umfassend mehrere Batteriesubeinheiten (3) wie Batteriezellen, wobei das Batteriemodul ein Gehäuse (4) aufweist, in der die Batterieeinheit (1, 2) angeordnet ist, wobei das Gehäuse (4) an zumindest einer Seite der Batterieeinheit (1, 2) Gasableiträume (7, 8, 10) zum Ableiten von durch die Batterieeinheit (1, 2) produziertem Gas und Partikel aufweist, wobei an der zumindest einen Seite der Batterieeinheit (1, 2) eine erste Ableitebene (E1) und eine zweite Ableitebene (E2) vorgesehen sind, die jeweils Gasableiträume (7, 8) aufweisen, wobei die erste Ableitebene (E1) zwischen der Batterieeinheit (1, 2) und der zweiten Ableitebene (E2) angeordnet ist, dadurch gekennzeichnet, dass Gasableiträume (7, 8, 10) der ersten Ableitebene (E1) zumindest teilweise als erste Ableitkanäle (7) ausgeführt sind und dass Gasableiträume (7, 8, 10) der zweiten Ableitebene (E2) zumindest teilweise als zweite Ableitkanäle (8) ausgeführt sind, welche in einem Winkel (13) zu den ersten Ableitkanälen (7) der ersten Ableitebene (E1) verlaufen und zumindest teilweise mit den ersten Ableitkanälen (7) der ersten Ableitebene (E1) strömungsverbunden sind.

APPARATUS FOR CUTTING A BATTERY CELL CAN

Resumen de: US20260321835A1

An apparatus for cutting a prismatic battery cell can including a base, a fixture coupled to the base for orienting the prismatic battery cell can, and a cutting device. The cutting device includes one or more guide rails coupled to the base, a retainer coupled to the one or more guide rails and movable with respect to a first axis, a tool guide coupled to the base, and one or more cutting tools coupled to the retainer and to the tool guide, the one or more cutting tools being movable with respect to the first axis and a second axis that is perpendicular to the first axis.

APPARATUS AND METHOD FOR INSPECTING POUCH CELL

Resumen de: US20260321754A1

0000 An apparatus for inspecting whether an aluminum layer is exposed in a pouch cell or a battery module including a plurality of stacked pouch cells according to an embodiment of the present disclosure may include at least one contact part configured to contact a cut surface of a sealing portion of the pouch cell and be electrically connected to the aluminum layer, a photon irradiator configured to irradiate photons toward a surface of the pouch cell to induce a photoelectric effect in the aluminum layer when the aluminum layer is exposed, and a controller including a determination unit configured to read an electrical signal generated when electrons emitted from the aluminum layer by the photoelectric effect are transmitted through the at least one contact part, and determine whether the aluminum layer is exposed based on the read electrical signal.

Rechargeable Battery Pack for Supplying Electrical Drive Power to an Electrically Driven Piece of Work Equipment, And System Comprising the Rechargeable Battery Pack

Resumen de: US20260321845A1

0000 A rechargeable battery pack supplies electrical drive power to an electrically driven piece of work equipment. The rechargeable battery pack has rechargeable battery cells, electrical cell contactors, and an FPC connector. The cell contactors are electrically connected to the rechargeable battery cells. The FPC connector is electrically connected to the cell contactors in each case by resistance welding joints produced from above via welding electrodes. The rechargeable battery pack has a cell holder that holds the rechargeable battery cells. The cell holder is formed as a welding support for producing the resistance welding joints. The cell holder is arranged physically below the cell contactor and the FPC connector, and/or the FPC connector has electrically conductive connector welding surfaces, wherein the connector welding surfaces each extend continuously between welding points of the resistance welding joints with a respective cell contactor of the cell contactors, in particular wherein the cell contactors are physically arranged below the connector welding surfaces to produce the resistance welding joints.

Rechargeable Battery Pack for Supplying Electrical Drive Power to an Electrically Driven Piece of Work Equipment, and System Comprising the Rechargeable Battery Pack

Resumen de: US20260321904A1

0000 A rechargeable battery pack supplies electrical drive power to electrically driven piece of work equipment. The rechargeable battery pack has rechargeable battery cells, an FPC connector and a pack housing. The FPC connector is electrically connected to the rechargeable battery cells. The rechargeable battery cells and the FPC connector are physically arranged in the pack housing. The pack housing has guide grooves which, running side by side, are designed to guide the rechargeable battery pack for mechanical connection with the piece of work equipment. The FPC connector is physically arranged between the guide grooves and not next to the guide grooves, and/or the rechargeable battery pack has at least one cell holder, wherein the cell holder is physically arranged in the pack housing. The cell holder has at least one holding part, wherein the holding part holds the rechargeable battery cells. The cell holder has at least one spacer projection such that the pack housing, together with the at least one holding part, forms a gap, wherein the FPC connector is physically arranged in a connector space created by the gap.

ELECTROSTATIC DISCHARGE PROTECTION FOR BATTERIES AND PORTABLE ELECTRONIC DEVICES

Resumen de: US20260321931A1

Embodiments pertain to a system and method for electrostatic discharge protection, incorporating a housing composed of dissipative material, an electrical sink, and battery contacts encased in insulators. The system is designed such that the first battery contact is electrically connected to the dissipative material with a lower resistance than the second contact, establishing a dedicated path to the electrical sink. This configuration is suitable for portable communication devices and battery cells, ensuring compliance with applicable safety standards by effectively managing electrostatic discharge.

BATTERY PACK AND ELECTRIC PRODUCT INCLUDING THE BATTERY PACK

Resumen de: US20260321839A1

A battery pack includes a pack housing and a plurality of battery cells accommodated in the pack housing. A spraying unit including a flow tube is arranged inside the pack housing. The spraying unit is configured to adjust a spraying path to cause a fire extinguishing agent to be sprayed toward any one of the battery cells.

LITHIUM METAL BATTERY AND MANUFACTURING METHOD THEREFOR, AND ELECTRIC DEVICE

Resumen de: WO2026214203A1

A lithium metal battery and a manufacturing method therefor, and an electric device. The lithium metal battery comprises a negative electrode sheet, a positive electrode sheet, and an electrolyte. The negative electrode sheet comprises lithium metal; the electrolyte comprises a lithium salt, a long-chain fluoroether solvent A, and a short-chain fluoroether solvent B; and the structures of the long-chain fluoroether solvent A and the short-chain fluoroether solvent B are represented by formula I and formula II, respectively, wherein R1 is selected from F, C1-C3 alkyl or fluorinated C1-C3 alkyl; R'1 is selected from H, C1-C3 alkyl or fluorinated C1-C3 alkyl; R2 and R3 are each independently selected from C1-C3 alkyl or fluorinated C1-C3 alkyl; R4 and R7 are each independently selected from F or fluorinated C1-C3 alkyl; and R5-R9 are each independently selected from H or F.

Battery Disconnect Devices, Systems, and Methods

Resumen de: US20260316598A1

0000 An energy storage device includes a first major component associated with an electrochemical subsystem and a second major component associated with an electrical control subsystem. The components are configured to join at an electrically isolable interface formed by complementary subcomponent connectors. The interface enables the major components to be selectively coupled or uncoupled to establish or interrupt electrical continuity, facilitating safe handling, service, and transport. In some embodiments, the connectors include embedded conductive elements, male-to-female structures, or removable pin interfaces that provide electrical isolation when disengaged. The device may further include enclosure structures, mounting features, cable-routing paths, and thermal or shielding elements that support modular assembly and system integration. Methods of assembling, isolating, servicing, and preparing the energy storage device for installation or operation are also provided.

POWER STORAGE DEVICE

Resumen de: WO2026216262A1

This power storage device comprises: an electrode group 2 having a positive electrode 10, a negative electrode 12, and a separator 14; and an electrolyte solution. The negative electrode 12 has a negative electrode mixture layer 36 containing a negative electrode active material. The negative electrode active material contains a silicon-containing material. The separator 14 has a base material 38 composed of polyolefin. On the surface of the base material 38, a ratio, O/C, of the area of the O1s peak measured by X-ray photoelectron spectroscopy to the area of the C1s peak measured by X-ray photoelectron spectroscopy is more than 0.01 but less than 0.11.

ELEKTROLYT FÜR EINE LITHIUMMETALLBATTERIE UND EINE LITHIUMMETALLBATTERIE, DIE DIESEN ENTHÄLT

Resumen de: DE102025152714A1

Ein Elektrolyt für eine Lithiummetallbatterie enthält ein Lithiumsalz und ein nichtwässriges organisches Lösungsmittel. Das nichtwässrige organische Lösungsmittel enthält ein Hauptlösungsmittel und ein Co-Lösungsmittel. Das Hauptlösungsmittel enthält N,N-Dimethylsulfamoylfluorid, Ethylencarbonat, Diethylcarbonat, Dimethylcarbonat, Ethylmethylcarbonat, 1,2-Dimethoxyether, Dipropylether, cyclisches Sulfonamid oder eine beliebige Kombination davon. Das Co-Lösungsmittel wird durch die chemische Formel 1 dargestellt und ist in einer Menge von mehr als 1 Mol-%, bezogen auf die Gesamtmenge (100 Mol-%) des nichtwässrigen organischen Lösungsmittels, enthalten.In der chemischen Formel 1 ist jeder Substituent derselbe wie in der detaillierten Beschreibung definiert.

Verfahren zum Erfassen eines thermischen Durchgehens

Resumen de: DE102025114646A1

Die Offenbarung betrifft ein Verfahren zum Erfassen eines thermischen Durchgehens einer in einem Gehäuse (4) eines elektrischen Energiespeichers (2) aufgenommenen Speicherzelle (3), mit den Schritten:- Bereitstellen eines Temperierkreislaufs (5) zum Temperieren der Speicherzellen (3), wobei der Temperierkreislauf (5) zumindest ein von einem Kühlfluid durchströmtes Kühlelement (6) mit einem veränderlichen Strömungsquerschnitt aufweist,- Bereitstellen einer in dem Temperierkreislauf (5) angeordneten Sensoreinheit (11) zum Detektieren einer Druck- und/oder Füllstandsänderung in dem Temperierkreislauf (5), und- Erfassen des thermischen Durchgehens, wenn die Druck- und/oder Füllstandsänderung einen vorbestimmten Schwellenwert übersteigt.

BATTERY UNIT AND METHODS FOR MANUFACTURING THE SAME

Resumen de: US20260321737A1

0000 An electrode-separator assembly includes: an electrode assembly; and a separator. The electrode assembly includes: a conductive substrate coated with electrode material; a first face; a second face opposite the first face; a first end defining a first serrated geometry; a second end opposite the first end and defining a second serrated geometry; a first side extending between the first end and the second end; and a second side opposite the first side. The separator includes a conformal separator coating and extends continuously: across the first face and the second face of the first electrode assembly; around the first side and the second side of the first electrode assembly; and around proximal resected regions on the first end and the second end of the first electrode assembly.

ELECTRODE ASSEMBLY AND SECONDARY BATTERY INCLUDING THE ELECTRODE ASSEMBLY

Resumen de: US20260321913A1

An electrode assembly includes a first electrode plate, a plurality of first electrode tabs connected to the first electrode plate, a second electrode plate wound together with the first electrode plate about an axis that extends in a first direction, and a plurality of second electrode tabs connected to the second electrode plate. The plurality of first electrode tabs do not to overlap each other in a second direction that is perpendicular to the first direction.

CAP PLATE ASSEMBLY, BATTERY ASSEMBLY, AND METHOD FOR MANUFACTURING THE SAME

Resumen de: US20260321906A1

A cap plate assembly electrically connected to an electrode tab of at least one electrode assembly, the cap plate assembly may include: a foil connector including a plurality of ribs extending in a first direction and arranged side by side in a second direction intersecting the first direction; a cap plate including a plurality of grooves overlapping the plurality of ribs in a third direction intersecting the first direction and the second direction; and a weld portion electrically connecting the electrode tab, the plurality of ribs, and the plurality of grooves to each other.

ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE ELECTRODE ASSEMBLY

Resumen de: US20260321736A1

0000 An electrode assembly including a first electrode; a second electrode; and a separator between the first electrode and the second electrode, the first electrode, the second electrode, and the separator are stacked and wound in a circular direction, the first electrode comprises a first current collector comprising a first uncoated portion; a first active material layer located on the first current collector; and a first electrode tab formed by the first uncoated portion, the second electrode comprises a second current collector including a second uncoated portion; a second active material layer located on the second current collector; and a second electrode tab formed by the second uncoated portion, the first electrode tab and the second electrode tab extend in opposite directions, and at least one electrode tab of the first electrode tab and the second electrode tab is wound the circular direction.

BATTERY PACK THERMAL DISTRIBUTION MONITORING SYSTEM AND METHOD

Resumen de: WO2026216657A1

The present disclosure relates to a battery pack thermal distribution monitoring system and method. A technical problem to be solved is to provide a battery pack thermal distribution monitoring system and method for measuring a battery pack thermal distribution at high resolution using a thermocouple sensor array and a machine learning model. To this end, the present disclosure provides: a thermocouple sensor array in which a plurality of thermocouple sensors are arranged to measure the temperatures at a plurality of points of a battery pack; and a processor that collects data about the temperatures measured by the thermocouple sensor array and normalizes the data, and applies the normalized data to a machine learning model to measure a thermal distribution of the battery pack.

ELECTRODE LAMINATE MODULE AND METHOD FOR MANUFACTURING ELECTRODE LAMINATE MODULE

Resumen de: US20260321733A1

In an electrode laminate module of the present disclosure, a current collector layer includes an extension portion extending beyond a cathode active material layer and an anode active material layer. A plurality of bipolar electrode laminates, a plurality of separator layers, and a plurality of resin sealing members are repeatedly stacked in a peripheral edge of the electrode laminate module in order of the bipolar electrode laminate, the resin sealing member, the separator layer, and the resin sealing member. The current collector layers of all or part of the bipolar electrode laminates each include, at part of a peripheral edge, an exposed portion that is exposed from the resin sealing members.

ELECTRICAL ENERGY SYSTEM, VEHICLE AND METHOD

Resumen de: US20260316583A1

0000 An electrical energy system for a vehicle includes a high voltage system including battery cells arranged in at least two strings of battery cells, at least one DC/DC converter for each of the strings of battery cells configured to down-convert a high voltage from the high voltage system to a low voltage provided to the low voltage system, a cell supervision system for supervising voltages of individual battery cells of the high voltage system including a separate communication loop for each of the strings of battery cells, a switching unit configured to selectively connect or disconnect the strings, and a control unit configured to control the switching unit to disconnect an affected string from the high voltage system and the low voltage system and to connect or keep another string connected with the high voltage system and/or the low voltage system.

SECONDARY BATTERY AND PREPARATION METHOD THEREFOR, AND ELECTRIC DEVICE

Resumen de: WO2026214447A1

The present application provides a secondary battery and a preparation method therefor, and an electric device. The secondary battery comprises a positive electrode sheet and a negative electrode sheet, wherein the positive electrode sheet and/or the negative electrode sheet comprise(s) a protective film layer; the protective film layer comprises a gel electrolyte; and the gel electrolyte comprises a polymer framework, and a lithium salt and a solvent incorporated into the polymer framework. The risk of thermal runaway in the secondary battery is low.

POSITIVE ELECTRODE FOR ALL-SOLID-STATE BATTERY AND ALL-SOLID-STATE BATTERY COMPRISING SAME

Resumen de: WO2026216698A1

The present invention relates to a positive electrode for an all-solid-state battery and an all-solid-state battery comprising same. The positive electrode for an all-solid-state battery comprises: a positive electrode current collector; and a positive electrode active material layer disposed on at least one surface of the positive electrode current collector, wherein the positive electrode active material layer comprises a positive electrode active material, a solid electrolyte, and viscoelastic crystals, the viscoelastic crystals are derived from a mixture of plastic crystals and an acrylate-based compound, and the plastic crystals have a structure formed by the bonding of a cation represented by chemical formula 1 and an anion represented by chemical formula 2.

BATTERY ENERGY STORAGE SYSTEM ENCLOSURE FOR SUPPORTING LARGE BATTERY RACKS

Resumen de: US20260321848A1

0000 A battery energy storage system (BESS) includes at least one BESS enclosure having a main structure, and a rear panel. The main structure includes a base weldment having a front edge, and a rear edge, a pair of opposing side weldments, and a top side weldment having a front edge and a rear edge. A plurality of crossbeams, a plurality of inner panels, and a battery rack are arranged within the main structure. The rear panel includes a bottom edge arranged adjacent to the rear edge of the base weldment, and a top edge of the rear panel arranged adjacent to the rear edge of the top side weldment. At least one of the plurality of crossbeams includes a closed, hollow cross-section. At least one of the plurality of inner panels includes a steel inner insulation panel.

SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME

Nº publicación: US20260321643A1 15/10/2026

Solicitante:

TOYOTA JIDOSHA KK [JP]
TOYOTA JIDOSHA KABUSHIKI KAISHA

Resumen de: US20260321643A1

A secondary battery may include a positive electrode and a negative electrode facing each other with a separator interposed therebetween. The negative electrode may include a current collector, a composite layer on the current collector containing graphite particles, and an adhesive layer between the composite layer and the separator. The composite layer may include a surface layer in contact with the adhesive layer and a main layer between the surface layer and the current collector. In an XRD profile of the main layer, a degree of orientation, defined as a ratio of an intensity of a (110) plane of a graphite crystal to an intensity of a (002) plane, may be 0.03 or greater. Graphite particles in the surface layer may have two particle size peaks, and particles in the main layer may have only a first particle size peak.