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Gas Collection Device

Resumen de: US20260318788A1

A gas collection apparatus includes a gas extraction unit configured to extract gas from a battery, a gas diffusion unit having a gas diffusion space configured to receive and diffuse the extracted gas from the gas extraction unit, a sampling unit having a gas sampling space configured to receive and sample the diffused gas from the gas diffusion unit, and a control unit configured to control the gas diffusion unit. A volume of the gas diffusion unit is variable, and a volume of the gas sampling space is fixed. The gas collection device is capable of sampling gas generated in a secondary battery by adjusting the concentration of the gas to a level suitable for analysis.

CURRENT-MEASUREMENT SEMICONDUCTOR DEVICE

Resumen de: US20260318960A1

0000 A current-measurement semiconductor device that measures current flowing through a shunt resistor included in a measurement target device. The current-measurement semiconductor device includes: a first current-measurement circuit that measures the current flowing through the shunt resistor by detecting a voltage across the shunt resistor; and a second current-measurement circuit that includes a coreless magnetic sensor, and measures the current flowing through the shunt resistor using the coreless magnetic sensor.

BATTERY ASSEMBLY AND ELECTRONIC DEVICE INCLUDING THE SAME

Resumen de: US20260321857A1

A battery includes a battery cell, and a cover. The cover includes a main cover portion to wrap a rear surface of the battery cell and including an inner surface facing the battery cell and an outer surface opposite the inner surface, a first cover portion extending from the main cover portion and to wrap a portion of a front surface of the battery cell from one-side edge of the battery cell, a second cover portion extending from the main cover portion and to wrap a portion of the front surface from an other-side edge of the battery cell. A first adhesive region of the first cover portion and a second adhesive region of the second cover portion are attached to a front surface of the battery cell. The first and second cover portions are spaced apart from each other when viewing a front surface of the battery.

IMPEDANCE MEASUREMENT METHOD FOR BATTERY CELL AND IMPEDANCE MEASUREMENT SYSTEM PROVIDING THE SAME

Resumen de: US20260319007A1

0000 The present disclosure relates to an impedance measurement method of a battery cell and an impedance measurement system providing the method. The impedance measurement system may include a user input/output unit that is configured to receive test input values including a start frequency, an end frequency, and a number of frequencies from a user, a user control unit that is configured to calculate a plurality of request frequencies corresponding to the number of frequencies based on the test input values, and match a plurality of testable frequencies stored in a lookup table with the plurality of request frequencies to determine a plurality of test frequencies, and a user communication unit that is configured to transmit the plurality of test frequencies to a test apparatus that is an impedance measurement apparatus for a battery cell.

Battery Case, Semi-Assembly for Secondary Battery Including the Same, and Secondary Battery Manufacturing Method

Resumen de: US20260321892A1

A battery case for accommodating an electrode assembly and an electrolyte, and having a receiving portion with a receiving space for accommodating the electrode assembly; and a pocket portion connected to one side of the receiving portion, where the pocket portion includes a main pocket portion having a main pocket space for accommodating the electrolyte and a connecting portion providing a connecting space that allows the main pocket space and the receiving space to communicate with each other is provided. The connecting space may have a cross-sectional area larger than a cross-sectional area of the main pocket space. An assembly for a secondary battery and a secondary battery manufacturing method are also provided.

SECONDARY BATTERY AND ELECTRIC DEVICE

Resumen de: US20260321641A1

0000 A secondary battery includes a negative electrode sheet, where the negative electrode sheet includes a negative electrode current collector and a negative electrode film layer disposed on at least one surface of the negative electrode current collector, the negative electrode film layer includes a negative electrode active material and a conductive agent, the negative electrode active material includes a graphite material, and the tap density of the graphite material is greater than or equal to 1.2 g/cm<3>; and based on the total mass of the negative electrode film layer, the mass percentage of the conductive agent is greater than or equal to 1.6%.

SECONDARY BATTERY AND POWER CONSUMING APPARATUS

Resumen de: US20260321662A1

0000 A secondary battery includes a negative electrode plate. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer formed on at least one surface of the negative electrode current collector. The negative electrode film layer includes a graphite material. The graphite material has a tap density of 1.2 g/cm<3 >to 1.4 g/cm<3>. In addition, a difference between a compaction density of the negative electrode film layer and the tap density of the graphite material is not less than 0.15 g/cm<3>.

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.

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.

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.

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.

Wiederaufladbare Batteriezelle und Verfahren zur Herstellung einer solchen

Resumen de: DE102025114203A1

Es wird ein Verfahren zur Herstellung einer wiederaufladbaren Batteriezelle (1) und eine solche Batteriezelle (1) angegeben. Hierbei werden eine folienförmige Anode (8) und eine zugeordnete folienförmige Kathode (10) als gegenläufige Elektroden sowie ein Separator (12) zur galvanischen Trennung von Anode (8) und Kathode (10) bereitgestellt. Zwischen dem Separator (12) und einem weiteren Bauelement (10, 12, 18) der Batteriezelle (1) wird ein Elektrolytraum (24) gebildet, in dem zumindest ein Teilbereich der Kathode (10) oder der Anode (8) angeordnet ist. Der Elektrolytraum (24) wird mittels einer eine Dichtung (26) bildenden Dichtungsbahn (28) zwischen dem Separator (12) und dem weiteren Bauelement (10, 12, 18) abgeschlossen, so dass die Anode (8) bzw. die Kathode (10) außerhalb das Elektrolytraums (24) angeordnet ist. Die Dichtung (26) wird dabei aus einem vernetzenden zweikomponentigem Dichtstoff gebildet, indem eine erste Komponente des Dichtstoffs auf den Separator (12) und eine zweite Komponente des Dichtstoffs auf das weitere Bauelement (10, 12, 18) jeweils in Form der Dichtungsbahn (28) aufgebracht werden, die bei Montage der Batteriezelle (1) zusammengeführt werden.

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.

SYSTEMS AND METHODS FOR CHARGING BATTERY FOR ELECTRIC VEHICLE

Resumen de: US20260316614A1

0000 A system includes a battery, wherein the battery includes a battery module and one or more controllers configured to generate a charging current for the battery module based on a maximum temperature-based charging current and a maximum capacity-based charging current.

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.

METHOD AND SYSTEM FOR GENERATING AN EXCITATION SIGNAL FOR ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

Resumen de: US20260319005A1

0000 A system includes a bus, a primary coil, and a first circuit coupled between the bus and the primary coil. A first secondary coil is DC-isolated from the primary coil. A second secondary coil is DC-isolated from the primary coil. The system also includes first and second battery terminals. A second circuit is coupled between the first secondary coil and the first battery terminals. A third circuit is coupled between the second secondary coil and the second battery terminals. A controller is coupled to the first circuit, the second circuit, and the third circuit. The controller is configurable control at least two of the first circuit, the second circuit, and the third circuit to transfer energy either from the first secondary coil to the primary coil and then from the primary coil to the second secondary coil, or from the first secondary coil directly to the second secondary coil.

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.

METHOD AND SYSTEM FOR CORRECTION OF IMPEDANCE MEASUREMENT

Resumen de: US20260319004A1

A system includes: a device under test (DUT) packaged in an assembly; a voltage measurement circuit coupled to the DUT and configurable to obtain a voltage measurement representing a voltage across the DUT; a current measurement circuit coupled to the DUT and configurable to obtain a current measurement representing a current through the DUT; and a processing circuit coupled to the voltage measurement circuit and the current measurement circuit. The processing circuit is configurable to: receive the voltage measurement; receive the current measurement; and compute an impedance spectrum of the DUT responsive to the voltage measurement, the current measurement, and parameters specific for the assembly.

Hopper Device for Secondary Battery and Method of Injecting Electrolyte Into Secondary Battery Using Same

Nº publicación: US20260321939A1 15/10/2026

Solicitante:

SK ON CO LTD [KR]
SK On Co., Ltd.

Resumen de: US20260321939A1

A hopper device for a secondary battery is proposed. The hopper device includes a hopper body configured to inject an electrolyte into an interior of a secondary battery, and a storage tank in fluid communication with an interior of the hopper body and configured to store the electrolyte therein. A method of injecting an electrolyte into a secondary battery is provided.