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NEGATIVE ELECTRODE AND LITHIUM SECONDARY BATTERY

Resumen de: US20260221428A1

The present disclosure relates to a negative electrode for a lithium secondary battery, including: a current collector; a first layer including a first active material including a carbon-based active material provided on the current collector; a second layer provided on the first layer and including a second active material including a silicon-based active material; and a third layer provided on the second layer and including aluminum or an aluminum-containing compound, wherein a thickness of the third layer is greater than 0 and equal to or less than 1/20 of a sum of thicknesses of the first and second layers, and to a lithium secondary battery.

Method for Manufacturing Lithium Secondary Battery

Resumen de: US20260221415A1

A method for manufacturing a lithium secondary battery, the method comprising the steps of: (1) preparing a battery cell including a positive electrode, a negative electrode, and an electrolyte, wherein the positive electrode includes lithium-rich manganese-based oxide in which the content of manganese in all metals excluding lithium is greater than 50 mol %, and a ratio of the number of moles of lithium to the number of moles of all metals excluding lithium (Li/Me) is greater than 1; and (2) charging and discharging the battery cell at least one or more times to activate the battery. The activating step includes ending the charging when 1.10

METHOD OF PREPARING POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERY

Resumen de: US20260217564A1

A method for manufacturing a positive electrode active material precursor for a lithium secondary battery is provided. The method comprises preparing a metal raw material, forming a reaction solution comprising the metal raw material, and coprecipitating a metal hydroxide precursor, wherein the reaction solution further comprises an additive, and wherein the additive comprises a colloidal flocculant. The method enables the manufacture of a positive electrode active material having a high level of microstructural orientation that facilitates ion diffusion throughout the electrode material and leads to batteries having significantly improved electrochemical properties.

Battery Pack and Motor Vehicle Having Battery Pack

Resumen de: US20260221587A1

A battery store for an electrically drivable motor vehicle includes a housing, a stabilization plate, and a plurality of cells. The stabilization plate has passages. The plurality of battery cells are disposed within the cell portion and have degassing openings. The degassing openings are each formed on a side of one of the plurality of battery cells facing the stabilization plate and are each assigned to one of the passages. The passages include at least one multi-cell passage to which a plurality of the degassing openings are assigned.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND POSITIVE ELECTRODE USING SAME

Resumen de: US20260221526A1

A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte, and a separator provided between the positive and negative electrodes. The positive electrode includes a positive electrode current collector and a positive electrode active material layer carried on the positive electrode current collector. The positive electrode active material layer contains a positive electrode active material, a binder, and an additive. The additive is a polymer material having a melting point or thermal decomposition temperature of 200° C. or higher and 500° C. or lower. In a cross section of the positive electrode active material layer, the polymer material forms and is dispersed as a plurality of island-shaped regions. The separator includes a base layer and a heat-resistant layer layered on the base layer. The melting point or thermal decomposition temperature of the polymer material is equal to or higher than a melting point of the base layer.

ELECTRODE AND ELECTRODE ASSEMBLY INCLUDING SAME

Resumen de: US20260221453A1

0000 An electrode includes: a substrate; a first active material layer and a first insulating layer that are disposed on one surface of the substrate; and a second active material layer and a second insulating layer that are disposed on the other surface of the substrate. The first insulating layer and the second insulating layer have different colors.

LITHIUM SECONDARY BATTERY

Resumen de: US20260221490A1

0000 A lithium secondary battery includes: a wound electrode group having a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; a core member disposed in a hollow of the electrode group; and a nonaqueous electrolyte having lithium ion conductivity. At the negative electrode, lithium metal deposits during charging, and the lithium metal dissolves during discharging. The core member has a hollow tubular shape, and has a slit extending in an axial direction, with both end portions in a circumferential direction that regulate the slit being misaligned without abutting each other.

GLASS, CRYSTALLIZED GLASS, SULFIDE SOLID ELECTROLYTE, ELECTRODE MIXTURE, SOLID ELECTROLYTE LAYER, AND LITHIUM ION SECONDARY BATTERY

Resumen de: US20260221502A1

0000 A glass includes: Li and P as elements constituting a cation component; and S as an element constituting an anion component. A composition of the glass, as expressed in atomic %, satisfies Li: 30% to 42% and P: 5% to 16%, the glass has a glass transition temperature of 110° C. to 300° C., and the glass has a lithium ion conductivity of 2 mS/cm or more at 25° C.

INSULATION MEMBER FOR ELECTROCHEMICAL DEVICE

Resumen de: US20260221564A1

An insulating member for an electrochemical device, capable of maintaining insulating properties even at high temperatures. An insulating member for an electrochemical device, containing a polytetrafluoroethylene composition containing polytetrafluoroethylene, the polytetrafluoroethylene including a tetrafluoroethylene homopolymer or a modified polytetrafluoroethylene containing a tetrafluoroethylene unit and 1.0% by mass or less of a modifying monomer unit.

Transfer Device

Resumen de: US20260217471A1

A transfer device including a first disk configured to be rotatable based on the central axis of the disk, a second disk provided above the first disk, and a gasket interposed between the first disk and the second disk is provided. The transfer device may have a plurality of holes along a circumference of the first disk configured to attach and detach an object to be transferred.

Electrode Producing Device, Battery Cell Including Electrodes Produced Using Same, and Battery Pack and Vehicle Including Battery Cell

Resumen de: US20260216747A1

An electrode producing device, for producing an electrode by transporting an electrode foil on which a coated portion of a coating layer and an uncoated portion of a non-coating layer are formed, including a transport unit configured to transport the electrode foil, a coated-portion pressurizing unit configured to pressurize the coated portion of the electrode foil transported by the transport unit, and an uncoated-portion pressurizing unit spaced apart from the coated-portion pressurizing unit and configured to pressurize the uncoated portion is provided.

PACK HOUSING AND MANUFACTURING METHOD THEREOF

Resumen de: US20260221565A1

Example embodiments provide a pack housing. The pack housing includes a center plate, side plates coupled to the center plate, and side beams coupled to the side plates, in which each of the side plates includes a reinforcing bead extending in a first direction, and the first direction is parallel to a mounting surface of each of the side plates.

LITHIUM SECONDARY BATTERY

Resumen de: US20260221432A1

0000 A lithium secondary battery may include a positive electrode; a silicon-based negative electrode; a separator provided between the positive electrode and the negative electrode; and an electrolyte, wherein the silicon-based negative electrode comprises a negative electrode current collector layer, and a negative electrode active material layer provided on one surface or both surfaces of the negative electrode current collector layer, and wherein the lithium secondary battery satisfies Formulas 1 and 2, Formula 1=X1≤20%, Formula 2=Y1≤10%, in Formulas 1 and 2, wherein X1 refers to a cell swelling value, and Y1 refers to a cell breathing value.

Determining State of Current Sensor for Battery

Resumen de: US20260219303A1

0000 The technology generally relates to accurately determining whether a current sensor of a battery pack is abnormal while determining a current validity of the battery pack through the current sensor. Determining whether the current sensor is sensor is based on measuring a consumption current of a battery management system for the battery pack.

BATTERY MANUFACTURING SYSTEM, BATTERY MANUFACTURING METHOD AND ELECTRODE ROLL

Resumen de: US20260221486A1

A system for manufacturing a battery is configured to unwind an electrode sheet from a first electrode roll and wind the electrode sheet into a second electrode roll, and includes a server configured to store coordinate data of the first electrode roll and datum point data indicating datum points of the first electrode roll; a programmable logic controller (PLC) configured to load the coordinate data and the datum point data from the server; and a datum point sensor configured to sense a datum point of an electrode sheet unwound from the first electrode roll and generate a datum point sensing signal. The PLC may be configured to obtain coordinate data of the second electrode roll by calibrating inverted coordinate values of stored coordinate values included in coordinate data of the first electrode roll, based on inverted coordinate values of stored datum point coordinate values included in the datum point data and the coordinate value of the sensed datum point.

ELECTRODE SHEET AND WOUND CELL

Resumen de: US20260221489A1

An electrode sheet includes a current collector and an active material layer applied on either side of the current collector. The active material layer on at least one side of the current collector is provided with a plurality of first regions in a first direction, with a region gap Dm between adjacent first regions. Each of the first regions is provided with a plurality of grooves, and adjacent grooves are spaced apart by a distance Dt in a direction perpendicular to a long axis of each of the grooves, where Dt > Dm. The first direction is a length direction or width direction of the electrode sheet.

CATHODE MATERIAL AND METHODS OF FORMING

Resumen de: US20260221446A1

A cathode material can include a substrate including an active cathode material and a coating overlying at least a portion of the substrate. The coating material may include CFx and M2CO3, wherein M may include an alkali metal. In a particular embodiment, the coating may include MF. In another particular embodiment, M may include Li.

NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING SAME, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Resumen de: US20260221449A1

The present embodiments relate to a negative electrode active material, a method for manufacturing the same, a negative electrode comprising the same, and a lithium secondary battery comprising the same. The negative electrode active material includes a core portion comprising at least one coarse graphite particle having an average particle diameter (D50) ranging from 5 to 20 μm and at least one fine graphite particle having an average particle diameter (D50) of less than 5 μm, wherein the fine graphite particles account for from 5 wt % to 30 wt % based on the total weight of the coarse graphite particles and the fine graphite particles.

COOLING PANEL FOR IMPROVED COOLING EFFICIENCY FOR PRISMATIC BATTERY CELLS

Resumen de: US20260221534A1

0000 A cooling panel for regulating the temperature of a prismatic battery cell. The cooling panel comprises at least a first laminate and a second laminate, which are heat-sealed together to create a pouch, which is then disposed between a first blanked sheet and a second blanked sheet, which are pressed and affixed together, creating a frame. The pouch has an inlet and an outlet disposed within itself, allowing for a coolant to be directed through the pouch. The coolant is directed to the pouch via the inlet, causing the pouch to expand, allowing for the pouch to communicate with at least one side surface of a prismatic battery cell, allowing the cooling panel to regulate the temperature of the prismatic battery cell and preventing overheating and thermal runaway events. The coolant then exits the pouch via the outlet where the coolant can be reused for further temperature regulation.

SULFOCHLORIDES AS INTERCALATION MATERIALS

Resumen de: US20260217556A1

Electrode materials for Li-ion batteries, Na-ion batteries, or K-ion batteries. Provided are materials that show enhanced capacity towards Li, Na, or K reactivity represented by formula AxTM1yTM2zSaClb, A being Li, Na, or K, TM1 and TM2 being 3d (Ti, V, Cr, Mn, Fe, Co, Ni, Cu), 4d (Nb, Mo, Ru, Rh) or 5d (W, Re, Os, Ir) transition metals, and x, y, z, a, and b being numbers of atoms. Also disclosed are batteries comprising the electrode materials.

Battery Bag and Compartment Packet Chemical Fire Suppression Systems

Resumen de: US20260216544A1

0000 A method a process for extinguishing and halting a thermal runaway event of an internal ionic battery within an electronic device providing an internal fire suppression packet containing fire suppression chemical within the electronic device or alternatively providing a fire-proof bag with a burstable internal pouch containing a fire suppression chemical to drawn a larger electronic bag placed within and sealed within the fire-proof bag.

DEVICE INCLUDING A BUS BAR FOR CURRENT MEASUREMENT

Resumen de: US20260221631A1

0000 A device including a conductive path for passing electric current. The device also includes a terminal of the device and a bus bar connected in the conductive path and electrically connected to the terminal of the device. The bus bar includes a first section made of a first material, a second section made of the first material, and a third section made of a second material. The third section is at least partially positioned between the first section and the second section. The second material has a lower temperature coefficient of resistance than the first material. The devices also include a plurality of voltage taps electrically connected to the bus bar. The plurality of voltage taps is operable to measure a voltage across the third section.

SECONDARY BATTERY AND PREPARATION METHOD OF THE SECONDARY BATTERY

Resumen de: US20260221461A1

0000 A secondary battery and a method of preparing the secondary battery. The battery including an anode current collector including a plurality of porous protruded portions and non-protruded portions between the porous protruded portions, a solid electrolyte including a plurality of uptake rooms, the plurality of uptake rooms accommodating the plurality of porous protruded portions, and an insulating layer between the non-protruded portions of the anode current collector and the solid electrolyte. The plurality of porous protruded portions include a metal-containing framework and an interlayer disposed on the porous metal-containing framework.

METHOD FOR PRODUCING SULFIDE-BASED SOLID ELECTROLYTE

Resumen de: US20260221498A1

The present disclosure provides a method for producing a sulfide-based solid electrolyte, in which a tetrahydrofuran-based organic solvent capable of dissolving most of a precursor mixture in a continuous phase and preventing an undissolved precursor mixture from generating precipitates caused by side reactions is used to produce a sulfide-based solid electrolyte having high purity and high ionic conductivity.

BATTERIEZELLE UND BATTERIEMODUL DAS DIESE ENTHÄLT

Nº publicación: DE102026102762A1 30/07/2026

Solicitante:

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

Resumen de: DE102026102762A1

Die vorliegende Offenbarung stellt eine Batteriezelle bereit, die Folgendes enthält: ein Zellengehäuse, das eine Seitenwand, die einen Aufnahmeraum darin bildet, und eine obere Platte, in der ein Durchgangsloch gebildet ist, enthält; eine Elektrodenanordnung, die in dem Aufnahmeraum des Zellengehäuses angeordnet ist; eine Isolierplatte, die zwischen der Elektrodenanordnung und der oberen Platte angeordnet ist und einen hohlen Abschnitt enthält; und einen ersten Stromabnehmer, der elektrisch mit einer ersten Elektrodenlasche der Elektrodenanordnung verbunden ist, wobei die Isolierplatte einen ersten Abschnitt, der die obere Platte berührt; einen zweiten Abschnitt, der die Elektrodenanordnung oder den ersten Stromabnehmer berührt; und einen dritten Abschnitt, der zwischen dem ersten Abschnitt und dem zweiten Abschnitt gebildet ist, enthält und wobei einer von dem ersten Abschnitt oder dem zweiten Abschnitt an einen Rand des hohlen Abschnitts angrenzt, und der andere davon an einen Rand der Isolierplatte angrenzt.