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FFC Bus Bar

Resumen de: US20260341915A1

An FFC bus bar includes a cable stack structure formed by stacking a plurality of flat flexible cables, and a high current terminal connected to at least one end portion of the cable stack structure. Each flat flexible cable comprises a terminal access portion including strands of conductor wires at least one end portion thereof, and the terminal access portion is welded to the high current terminal.

THERMAL RUNAWAY DETECTION SYSTEM FOR BATTERIES WITHIN ENCLOSURES

Resumen de: US20260341817A1

A battery thermal runaway detection sensor system for use within a battery enclosure housing one or more batteries. The system has at least one gas sensor for detecting a venting condition of a battery cell of hydrogen, carbon monoxide or carbon dioxide, and providing a sensed output in real time. A microcontroller determines power management and signal conditioned output on the concentration of specific battery venting gases based on the sensed output from said at least one gas sensor.

CATHODE ACTIVE MATERIAL AND SECONDARY BATTERY COMPRISING SAME

Resumen de: US20260341727A1

The present invention provides a cathode active material that includes a core containing a transition metal oxide, a first surface portion formed outward from the interface of the core, and a second surface portion formed inward from the interface of the core, wherein both the first and second surface portions contain Si. The invention also provides a secondary battery that includes this cathode active material.

METHOD FOR RECOVERING VALUABLE METAL

Resumen de: US20260337717A1

To provide a method whereby a valuable metal can be efficiently recovered from a waste lithium-ion battery, the present invention is a method for recovering a valuable metal from a waste lithium-ion battery, and comprises an oxidation roasting step S3 for performing oxidation roasting treatment of a raw material that includes a waste lithium-ion battery, and a reduction step S4 for reducing a resultant oxidation roasted product in the presence of carbon. The present invention is characterized in that dust in an exhaust gas that is generated in the oxidation roasting step S3 is subjected to heat treatment at no less than 600 °C but less than 1000 °C to perform recovery, and at least a portion of the recovered heat-treated dust is added to material to be treated in the reduction step S4. The temperature of heat treatment of the dust is preferably no less than 900 °C but less than 1000 °C.

TERMINAL FOR SECONDARY BATTERY AND METHOD FOR MANUFACTURING TERMINAL FOR SECONDARY BATTERY

Resumen de: US20260341928A1

Provided is a method for manufacturing an electrode terminal formed of different kinds of metals excellent in junction strength. The manufacturing method of a terminal herein disclosed includes the following steps of: preparing a first member and a second member each made of a metal and forming the terminal, with the first member being formed in a sheet shape and having at one surface thereof a concave part for allowing a part of the second member to be fitted therein, and with the second member having a flange part to be accommodated in the concave part; and fixing the first member and the second member to each other by ultrasonic pressure contact, with the ultrasonic pressure contact being performed by applying an ultrasonic wave vibration while applying a pressure in a direction of stacking of the first member and the second member in a state where the flange part of the second member is arranged in the concave part of the first member, thereby extending the flange part, and bringing a part of the extended flange part into pressure contact with an inner wall surface of the concave part.

BINDER COMPOSITION FOR SECONDARY BATTERY

Resumen de: US20260341717A1

An aqueous emulsion composition useful as a binder for a non-aqueous battery electrode is provided. The composition includes a copolymer and an anionic surfactant that includes a sulfonate group or acid or salt form thereof. The anionic surfactant is not polymerizable with the copolymer. The copolymer includes as polymerized monomers: an ethylenically unsaturated ionic monomer including a phosphate or phosphonate group or salt or acid forms thereof; an ethylenically unsaturated ionic monomer including a sulfonate group or salt or acid forms thereof; a non-ionic monoethylenically unsaturated monomer; optionally an ethylenically unsaturated ionic monomer including a carboxylate group or salt or acid or anhydride form thereof; and optionally a monomer having at least two ethylenic unsaturations. A slurry composition including the aqueous emulsion composition and an active material is also provided.

DISCONNECTION DETECTION DEVICE AND BATTERY MONITORING DEVICE

Resumen de: US20260338876A1

A disconnection detection device includes, in a battery including battery cells connected in series, each of which connected in parallel to a discharge circuit that includes an electronic switch, a voltage detection circuit detecting a cell voltage of the battery cell, a CR low-pass filter provided in each of wirings connecting the battery cell to the voltage detection circuit, and a control unit performing equalization discharge of the discharge circuit and detecting the disconnection of the wiring based on the cell voltage, in which the electronic switch has a protection function for prohibiting transition to an ON state, and the control unit performs electricity removal of electric charges accumulated in the CR low-pass filter by operating any one of a pair of the electronic switches related to a pair of the adjacent battery cells, and detects the disconnection of the wiring based on the cell voltage after the electricity removal.

BUTTON-TYPE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

Resumen de: US20260341859A1

A method for manufacturing a button-type secondary battery includes preparing a lower can including an accommodation part having a downward recess, a connection part extending outward from an upper end of the accommodation part, and a bent part extending from the connection part with a recessed lower insertion groove in the bent part; preparing an upper can including a cover part on the accommodation part and a bonding part extending along an edge of the cover part and bonded to the bent part with a recessed upper insertion groove in the bonding part; disposing a gasket on the lower can; and bonding the bonding part to the bent part to finish the accommodation groove of the lower can through the cover part of the upper can. The lower insertion groove and the upper insertion groove are spaced apart and vertically shifted with respect to each other.

ELECTRODE SHEET MARKING SYSTEM AND METHOD

Resumen de: US20260340812A1

An electrode sheet marking system includes an image acquisition device and a processing device. The image acquisition device is configured to perform image acquisition on an electrode sheet roll in an unwinding process to obtain a current image frame. The processing device is communicatively coupled to the image acquisition device and is configured to: detect the current image frame, and under a condition that the positioning mark is detected in the current image frame, determine a marking moment of a target electrode sheet based on an acquisition moment of a reference image frame corresponding to the current image frame, where the target electrode sheet is an electrode sheet that is distinguished by the detected positioning mark, and the marking moment is a moment at which a marking device is triggered to mark the target electrode sheet.

SILICON-CARBON NEGATIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREOF AND APPLICATION THEREOF

Resumen de: US20260341711A1

A silicon-carbon negative electrode material and a preparation method thereof and an application thereof. The preparation method includes the following steps: conveying a silicon powder, a polyoxypropylene-polyoxyethylene copolymer and an organic solvent to a nitrogen-blanketed seal tank; dispersing same to obtain a first slurry; subjecting the first slurry to an aging treatment, a coarse grinding treatment and a fine grinding treatment to obtain a fourth slurry; mixing the fourth slurry and an organic carbon source; and subjecting the mixture to a dispersion treatment, a spray drying treatment and a sintering treatment to obtain a silicon-carbon negative electrode material. Through specific processes such as dispersion treatment, aging treatment, coarse grinding treatment and fine grinding treatment, a silicon-carbon negative electrode material with small particle size and narrow particle size distribution may be obtained, thereby improving cycling stability of a battery assembled with the silicon-carbon negative electrode material.

LIQUID COOLING PLATE ASSEMBLY, SERVER AND DATE CENTER

Resumen de: US20260343797A1

The present disclosure provides a liquid cooling plate assembly, a server, and a data center. The liquid cooling plate assembly includes: a cooling plate and a cover body, the cooling plate has a cavity for accommodating coolant and an interface for connecting to a liquid cooling pipe, the interface is in communication with the cavity, the cooling plate further includes a recess, and the interface is located in the recess; and the cover body covers at a location of the recess, and forms an accommodating space for accommodating an overflow liquid with the cooling plate. By the present disclosure, the problem of liquid leakage damage in a liquid cooling solution in the related art is solved.

CYLINDRICAL LITHIUM-ION BATTERY

Resumen de: US20260341793A1

Provided is a cylindrical lithium-ion battery, which comprises a cathode, an anode, and a non-aqueous electrolyte. The anode comprises an anode material layer containing an anode active material, and the anode active material includes a silicon-based material. The non-aqueous electrolyte comprises a non-aqueous organic solvent and lithium salts. The non-aqueous organic solvent comprises a chain carbonate containing dimethyl carbonate, and the lithium salts comprise LiPF6 and a lithium fluorosulfonylimide. The cylindrical lithium-ion battery meets the following condition: 0.05≤(100−D)×F/S≤8.75, with 50≤D≤75, 0.012≤F≤1, and 5≤S≤20. The cylindrical lithium-ion battery provided by the present application can effectively improve the rate capability, room-temperature cycle performance, and high-temperature storage performance of cylindrical lithium-ion batteries, thereby improving their service lives.

BATTERY LID

Resumen de: US20260341891A1

A battery lid includes a metal plate integrally formed with a valve and a surrounding plate portion surrounding the valve which is configured to facilitate rupturing the valve at a predetermined pressure. The valve includes a pressure receiving plate portion having a bending groove, and being bendable from the bending groove by pressure applied to the valve, and a thin plate portion which is thinner than the surrounding plate portion, and connects the pressure receiving plate portion to the surrounding plate portion. The thin plate portion has a rupture groove passing through extension sections on respective lines extending from the bending groove. As the pressure receiving plate portion is deformed by the pressure applied to the valve, the extension sections are pulled more strongly than are other sections in the valve. Therefore, when the predetermined pressure is applied, the valve is ruptured from the extension sections of the rupture groove.

NEGATIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, AND ELECTRONIC DEVICE

Resumen de: US20260341707A1

A negative electrode active material includes graphite, where Dn10, Dv50, and Dv90 of the negative electrode active material satisfy: D=(Dv90−Dn10)/Dv50, and 0.8≤D≤1.5. The Dn10 of the negative electrode active material is 1 μm to 5 μm. In an X-ray diffraction pattern of the negative electrode active material, a peak intensity ratio of a characteristic peak C004 to a characteristic peak C110 is I. The negative electrode active material satisfies: 2≤I/D≤4. The negative electrode active material can be used to improve the cycling performance of the secondary battery.

ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY AND ELECTRICAL APPARATUS

Resumen de: US20260341921A1

The present application provides an electrode assembly, a battery cell, a battery and an electrical apparatus. The electrode assembly includes a main body part, a first tab and a second tab. The main body part is cylindrical. The polarities of the first tab and the second tab are opposite, the first tab and the second tab are arranged at the same end of the main body part along an axial direction of the main body part, and the electrical conductivity of the first tab is smaller than the electrical conductivity of the second tab. Along the axial direction of the main body part, the first tab has a first surface away from the main body part, and the second tab has a second surface away from the main body part, the area of the first surface being larger than the area of the second surface.

SECONDARY BATTERY, METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL, PORTABLE INFORMATION TERMINAL, AND VEHICLE

Resumen de: US20260341697A1

Secondary batteries using lithium cobalt oxide as positive electrode active materials have a problem of a decrease in battery capacity due to repeated charging/discharging, for example. A positive electrode active material particle which hardly deteriorates is provided. In a first step, a container in which a lithium oxide and a fluoride are set is placed in a heating furnace, and in a second step, the inside of the heating furnace is heated in an atmosphere containing oxygen. The heating temperature of the second step is from 750 °C to 950 °C, inclusive. By the manufacturing method, fluorine can be contained in the positive electrode active material particle to increase the wettability of the surface of the positive electrode active material so that the surface of the positive electrode active material is homogenized and planarized. The crystal structure of the thus manufactured positive electrode active material is unlikely to be broken in repeated high-voltage charging/discharging. Thus, secondary batteries using the positive electrode active material having such a feature have greatly improved cycle characteristics.

A CYLINDRICAL SECONDARY CELL COMPRISING AN INCLINED ENCLOSURE AND A LID

Resumen de: US20260341858A1

This disclosure presents a cylindrical secondary cell (1) comprising a cylindrical enclosure (2) comprising a first enclosure end (2a), a second enclosure end (2b) and an enclosure sidewall (2c) extending between the enclosure ends (2a, 2b), wherein at least one enclosure end (2b) is open. The cell (1) further comprises a lid (10) to be attached radially internally to the cylindrical enclosure (2) at the open enclosure end (2b). An end section (2ce) at the open enclosure end (2b) of the enclosure sidewall (2c) extends non-parallel to the remaining enclosure sidewall (2c). The lid (10) comprises a flange (10f) that, when attached to the cylindrical enclosure (2), extends non-parallel to the enclosure sidewall (2c) to match the end section (2ce). Further, a method of manufacturing a cylindrical secondary cell is presented.

APPARATUS AND METHOD FOR PREDICTING STATE OF BATTERY

Resumen de: US20260338868A1

An apparatus for predicting a state of a battery includes: a first communication unit configured to: receive data on the temperature, current, and voltage of a plurality of battery cells measured in a battery management system included in a battery pack; and receive, from a vehicle using a corresponding battery cell, first environmental information regarding an environment in which the vehicle is traveling; a second communication unit configured to receive, from outside the apparatus, experimental data on the state of the battery cell or the battery pack in various environments; and a battery state prediction unit configured to predict the state of a battery using the received data on the temperature, current, and voltage of each of the plurality of battery cells, the first environmental information, and the state environmental information, wherein the state of the battery includes: a battery cell charge state; and a battery cell degradation state.

ELECTROCHEMICAL APPARATUS AND ELECTRONIC APPARATUS

Resumen de: US20260341672A1

An electrochemical apparatus, including a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a negative electrode current collector and a negative electrode active substance layer formed on the negative electrode current collector. The negative electrode current collector has a high tensile strength and the negative electrode active substance layer has a specific weight. The electrochemical apparatus has improved high-temperature storage expansion performance and cyclic expansion performance.

SYNTHESIS OF LITHIUM LANTHANUM ZIRCONATE FROM NANOCRYSTALLINE LANTHANUM ZIRCONATE

Resumen de: US20260337047A1

Fabricating a layer including lithium lanthanum zirconate layer includes forming a slurry including lanthanum zirconate nanocrystals, a lithium precursor, and a lanthanum precursor in stoichiometric amounts to yield a dispersion including lithium, lanthanum, and zirconium. The slurry is dispensed onto a substrate and dried. The dried slurry is calcined to yield the layer including lithium lanthanum zirconate.

CELL, POWER BATTERY PACK, AND ELECTRIC VEHICLE

Resumen de: US20260341866A1

Some aspects of the disclosure provide a cell that includes a cell body having a length L, a width H, a thickness D, and an energy capacity E. The length L of the cell body is greater than the width H, and the width H of the cell body is greater than the thickness D. The length L of the cell body and the energy capacity E of the cell body satisfy L/E=0.8 mm Wh-1-2.45 mm. Wh-1. In some examples, a power battery pack includes a housing and a plurality of cells in the housing. At least one of the plurality of cells is configured according to the above cell.

BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS

Resumen de: US20260341920A1

A battery cell, a battery, and an electric apparatus are provided. The battery cell includes a housing and a first conductive layer. The housing includes a first wall portion, where the first wall portion has a first surface, the first wall portion is provided with a recess, and the recess has a side surface connected to the first surface. The first conductive layer is accommodated in the recess, and the first conductive layer is in contact with the side surface. The provision of the first conductive layer improves the electric field distribution in a region, provided with the recess, of the first wall portion, resulting in a more uniform electric field strength distribution, reducing the risk of tip discharge at a connection position between the side surface and the first surface in a high-voltage environment, and improving the reliability of the battery cell.

PRE-LITHIATED AND CARBON-ENCAPSULATED SILICON-BASED ANODE MATERIAL AND METHOD FOR PREPARING USING PHOTOELECTROMAGNETIC ENERGY

Resumen de: US20260341670A1

A method for preparing an anode material for a lithium secondary battery using pre-lithiation and photoelectromagnetic energy irradiation, and an anode material for a lithium secondary battery as prepared by the method are disclosed. The method includes mixing an active material, a polymer and a lithium salt with each other in a solvent to produce a liquid mixture; converting the liquid mixture into liquid droplets and drying the droplets into powders; and applying photoelectromagnetic energy.

COMPOSITE ELECTRODE SHEET AND PREPARATION METHOD THEREOF, BATTERY CELL AND PREPARATION METHOD THEREOF

Resumen de: US20260341738A1

A composite electrode sheet and a preparation method thereof, and battery cells and a preparation method thereof are provided. The composite electrode sheet includes a composite current collector, a positive electrode material layer, and a negative electrode material layer. The composite current collector includes an insulating layer, a positive electrode conductor layer, and a negative electrode conductor layer; a first surface of the insulating layer is provided with the positive electrode conductor layer, and a second surface of the insulating layer is provided with the negative electrode conductor layer; the positive electrode material layer is arranged on a surface, away from the insulating layer, of the positive electrode conductor layer; the negative electrode material layer is arranged on a surface, away from the insulating layer, of the negative electrode conductor layer.

Method for reconditioning lithium-containing energy accumulators

Nº publicación: US20260341822A1 29/10/2026

Solicitante:

CYLIB GMBH [DE]
CYLIB GmbH

Resumen de: US20260341822A1

The present invention relates to a method for reprocessing lithium-containing energy storage means, the method comprising at least the following method steps: i) —optionally pretreating the lithium-containing energy storage means, the pretreatment comprising at least one of thermal, mechanical, and electrical pretreatment;ii) pyrolysing the optionally pretreated lithium-containing energy storage means, with the liberation of carbon dioxide, and with at least partial carbonation of the contained lithium under a carbon dioxide atmosphere;iii) separating lithium in a separating step; andiv) hydrometallurgically reprocessing the mixture obtained in method step iii), with further carbonation of the contained lithium and with separation of lithium in a further separating step, withv) carbon dioxide liberated in method step ii) being returned to at least one of method steps ii) and iii).