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SEPARATOR HAVING SECTION STRUCTURE OF HIGH CONSISTENCY AND PREPARATION METHOD THEREFOR

Resumen de: US20260269424A1

The present disclosure provides a separator having section structure of high consistency and a preparation method therefor, and relates to the technical field of new energy storage. Microporous structure of a section of the separator has the following distribution: the number of pores having a pore diameter of more than or equal to 10 nm and less than or equal to 500 nm accounts for 40% or more of the total number of pores; the number of pores having a pore diameter of greater than 500 nm and less than or equal to 800 nm accounts for 50% or less of the total number of pores; and the number of pores having a pore diameter of greater than 800 nm and less than or equal to 1500 nm accounts for 10% or less of the total number of pores. The present disclosure solves the problems of self-discharge, lithium plating, and the like caused or aggravated by poor section structure consistency of the separator, and achieves the technical effects of improving the performance of a battery such as rate capability, service life, and safety.

FLUORINATED CARBOXYLIC ACID SALT COMPOUND

Resumen de: US20260265172A1

A method for producing a compound represented by formula (P1): (B1f)mp(A1)np, wherein B1f is RfCOO,Rf is a hydrocarbon having one or more fluorine atoms,A1 is a group excluding H,mp is (valence of A1)×np and is 1 or 2,np is mp/(valence of A1) and is 1,A1 has a valence of 1 or 2,the method comprising step A of reactinga compound represented by formula (S1): (B1f)(R1),wherein B1f is as defined above, andR1 is an organic group,anda compound represented by formula (S2): (A1)ms2(B2)ns2,wherein A1 is as defined above,B2 is OH, CO3, or HCO3,ms2 is (valence of B2)×ns2/(valence of A1) and is 1 or 2, andns2 is (valence of A1)×ms2/(valence of B2) and 1 or 2,or a hydrate thereof.Such a method is a novel production method of a fluorinated carboxylic acid salt compound (preferably a fluorinated carboxylic acid salt compound having a low water content).

Sodium Ion Battery, Method for Producing a Sodium Ion Battery and Use of a Sodium Ion Battery

Resumen de: US20260269245A1

A sodium ion battery is provided. The sodium ion battery includes a cathode which has a composite cathode active material, and an anode which has an anode active material. The composite cathode active material includes at least a first cathode active material and a second cathode active material. The first cathode active material and/or the second cathode active material is a polyanionic cathode active material. Prior to a first discharging and/or charging process of the sodium ion battery, the first cathode active material is fully sodiated and the second cathode active material is fully desodiated. The anode active material is pre-sodiated prior to the first discharging and/or charging process of the sodium ion battery. Also provided are a method for producing a sodium ion battery of this type and a use of a sodium ion battery of this type.

Secondary Battery

Resumen de: US20260269385A1

A secondary battery includes an electrode assembly including a plurality of unit cells stacked in a first direction, and having electrode leads at opposing ends in a second direction perpendicular to the first direction; a multifunctional terminal block (MTB) included at the opposing ends of the electrode assembly; and a laminate sheet that wraps around sides of the electrode assembly, wherein the MTB includes: an electrode terminal part electrically coupled with the electrode leads of the electrode assembly; and a rupture disk configured to rupture to discharge gas.

AN APPARATUS AND METHOD TO PROVIDE POWER TO ELECTRONIC LOADS AND FOR CHARGING ENERGY STORAGE DEVICES

Resumen de: US20260269643A1

A device comprises at least one charging circuit, which comprises at least one input for connecting to at least one energy source, at least one output for connecting to at least one load and having an output voltage, and a controller configured to generate a control signal having an enabling signal portion, or a disabling signal portion, or both an enabling signal portion and a disabling signal portion, the and an output stage configured to, during the enabling signal portion, couple an inductor to the at least one input, or the at least one output, or both the at least one input and the at least one output, and during the disabling signal portion, isolate the inductor from the at least one input, or the at least one output, or both the at least one input and the at least one output.

ENERGY STORAGE BATTERY PACK

Resumen de: US20260269410A1

The present application provides an energy storage battery pack, which includes a battery module, a battery management unit, an upper housing unit, and a lower housing. The upper housing unit includes an upper housing body and a terminal, the terminal is embedded in the upper housing body, and is integrally formed with the upper housing body; an opening of the upper housing body is opposite to an opening of the lower housing, the upper housing unit is fixedly connected to the lower housing, the upper housing body and the lower housing jointly enclose an accommodation cavity, and the battery module and the battery management unit are connected and arranged in the accommodation cavity; and a first end of the terminal extends into the accommodation cavity and is connected to the battery management unit, and a second end of the terminal is configured to be connected to an external device.

COATING FILM REMOVING MECHANISM AND COATING FILM REMOVING EQUIPMENT

Resumen de: US20260264116A1

Provided is a coating film removing mechanism for removing a coating film from a coated film that includes the coating film on at least one surface of a base film and is conveyed. The mechanism includes: a removing member that includes a tip portion extending in a film width direction, and is for removing the coating film by bringing the tip portion into contact with the coated film; and a nozzle member disposed on an upstream side of the removing member in a film conveyance direction. The removing member and the nozzle member constitute a suction nozzle that sucks the coating film removed by the tip portion, and a side surface of the removing member and a side surface of the nozzle member are inclined so as to approach each other toward the tip portion.

POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE

Resumen de: US20260269234A1

A positive electrode active material with a small decrease in discharging capacity in charging and discharging cycles is provided. The positive electrode active material contains cobalt, nickel, and oxygen. The proportion of nickel in the sum of the cobalt and the nickel, Ni/(Co+Ni), is greater than 0.175 and less than or equal to 0.215. When the positive electrode active material in a state of being charged to 4.5 V (vs. Li/Li+) is analyzed by powder X-ray diffraction using CuKα1 radiation, diffraction peaks are observed at at least two or more of 2θ±18.526±0.1°, 2θ=37.391±0.1°, 2θ=37.628±0.1°, 2θ=39.015±0.1°, 2θ=44.947±0.1°, 2θ=49.029±0.1°, and 2θ=58.857±0.1°.

Device for Testing Dryness of Electrode, and Method for Testing Dryness of Electrode

Resumen de: US20260266716A1

A device for testing the dryness of an electrode may include an electrode substrate in which an electrode slurry is applied onto a collector, a standard sample, a light emitting unit that includes a light source and a bifurcated optical fiber connected to the light source. The light emitting unit may selectively irradiate light to any one of the electrode substrate or the standard sample through a first optical fiber of the bifurcated optical fiber. The device may also include a light receiving unit with a spectrometer that may selectively receive light reflected from any one of the electrode substrate or the standard sample. The light receiving unit may and analyze the reflected light. The device may also include a control unit that may correct at least one of the light source or the spectrometer based on the analyzed reflected light of the spectrometer.

BATTERY DIAGNOSIS APPARATUS AND BATTERY DIAGNOSIS METHOD

Resumen de: US20260266908A1

Disclosed is a battery diagnosis apparatus and a battery diagnosis method. The battery diagnosis apparatus includes a processor configured to control a stimulation application device to intermittently apply a second electric stimulation that is greater than a first electric stimulation to a target cell during a state change period, and a communication unit configured to obtain current time series data during the state change period and voltage time series data representing a change history of a full-cell voltage of the target cell during rperiods of rest between the intermittently applied second electric stimulation given in the state change period. The processor generates a measurement full-cell profile based on the current time series data and the voltage time series data, and analyzes the measurement full-cell profile to estimate a negative electrode participation start point.

Verfahren und Vorrichtung zur Sicherheitsprüfung von Leistungsbatterien, Endgerät, Medium

Resumen de: DE102026103217A1

Die vorliegende Anmeldung offenbart eine Vorrichtung und ein Verfahren zur Sicherheitsprüfung von Leistungsbatterien, ein Endgerät und ein Medium. Die Vorrichtung umfasst eine Basis, einen geschlossenen kugelförmigen Tank, eine Testplattform, einen Portalrahmen und ein Steuermodul. Der geschlossene kugelförmige Tank umfasst einen oberen Teil und einen unteren Teil des kugelförmigen Tanks. Die Testplattform befindet sich im Inneren des unteren Teils des kugelförmigen Tanks. Eine Befestigungsplattform für die Batterie der Testplattform ist im Kugelmittelpunkt des unteren Teils des kugelförmigen Tanks angeordnet. Die Sensorhalterung ist umlaufend um die Befestigungsplattform für die Batterie angeordnet und in verschiedenen Richtungen jeweils mit Sensoren ausgestattet. Das Steuermodul ist in der Lage, einen Betriebsmodus eines Auslösungsmoduls zur Induktion eines Batterieversagens zu steuern, um ein thermisches Durchgehen einer zu prüfenden Batterie zu erzeugen, und auf Basis der überwachten Werte der Sensoren sowie einer entsprechenden Gewichtung dieser Werte einen Sicherheitswert der zu prüfenden Batterie zu bestimmen. Die Vorrichtung der vorliegenden Anmeldung ermöglicht durch Verwendung einer kugelförmigen Begrenzung sowie Sensoren an verschiedenen Positionen eine direkte und vollumfängliche Überwachung der Verteilung der verschiedenen überwachten Werte während eines Batterieversagens. Auf diese Weise ergibt sich ein Sicherheitswert mit hoher Zuverlässigke

SAFETY VALVE, EXTERIOR BODY, AND BATTERY

Resumen de: US20260269418A1

A safety valve includes a middle section formed in a rectangular shape at a depressed section of an exterior body, one end section that is continuous with the middle section at the depressed section and is formed in a semicircular shape on the side of one end of the middle section along a first direction (longitudinal direction X), and another end section that is continuous with the middle section at the depressed section and is formed in a semicircular shape on the side of another end of the middle section along the first direction. A first groove and a second groove of the safety valve are formed in linear shapes, a third groove and a fourth groove of the safety valve are formed in arcuate shapes, and the thickness of the first groove is thicker than the thickness of the second groove, the third groove, and the fourth groove.

Secondary Battery

Resumen de: US20260269431A1

A secondary battery including an electrode; an electrode tab including an extension portion extending outward from the electrode and a tab coupling portion provided on one side of the extension portion in the extension direction; an electrode lead coupled to the tab coupling portion and capable of electrically connecting the electrode to the outside; and an auxiliary connecting member coupled to the electrode lead and the extension portion, respectively, is provided.

Lithium Secondary Battery

Resumen de: US20260269317A1

Provided is a lithium secondary battery including a positive electrode; a negative electrode; a separator disposed between the negative electrode and the positive electrode; and a non-aqueous electrolyte, wherein the negative electrode includes a negative electrode active material, the negative electrode active material includes a silicon-based active material, and the non-aqueous electrolyte includes a lithium salt, fluoroethylene carbonate, 1,2-difluoroethylene carbonate, and a coumarin-based compound of Formula 1:wherein R1 and n are described herein.

ELECTRODE STRUCTURE AND SECONDARY BATTERY

Resumen de: US20260269311A1

An electrode structure includes a solid electrolyte layer and a pair of electrode layers disposed to sandwich the solid electrolyte layer. The solid electrolyte layer includes a composite of a first phase composed of an oxide-based ion conductor and a second phase composed of an amorphous-phase-containing ion conductor that contains an amorphous phase at least in part. The oxide-based ion conductor has an ionic conductivity higher than an ionic conductivity of the amorphous-phase-containing ion conductor. The amorphous-phase-containing ion conductor has a Young's modulus lower than a Young's modulus of the oxide-based ion conductor. The pair of electrode layers includes a negative electrode layer composed of a porous body in which pores are formed. The second phase is interposed in at least a part between the negative electrode layer and the first phase.

BATTERY MANAGEMENT SYSTEM AND COMMUNICATION MANAGEMENT METHOD THEREFOR

Resumen de: US20260271158A1

Disclosed is a battery management system for communicating, as a master board, with a plurality of slave boards, the system comprising: a light-emitting element performing wireless communication with the plurality of slave boards, each including a light-receiving element; a resistor circuit which is connected to the light-emitting elements in series and which includes a plurality of resistors that can be connected in parallel to each other according to the opening/closing of a switch; and a controller, wherein the controller controls at least some of switches such that the resistance of the resistance circuit is reduced by connecting in parallel at least some of the plurality of resistors in response to the detection of a decrease in the intensity of light transmitted from the light-emitting element to at least some of the light-receiving elements.

POSITIVE ELECTRODE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE, SODIUM BATTERY, AND ELECTRIC APPARATUS

Resumen de: US20260269233A1

A positive electrode material includes a layered oxide represented by a chemical formula NaaNibFecMndMeOf, where 0.8≤a≤1, 0≤b≤0.2, 0.25≤c≤0.5, 0.26≤d≤0.6, 0≤e≤0.1, 1.8≤f≤2, and M is a doping metal element. The preparation method for the positive electrode material includes the step of sintering a precursor of NaaNibFecMndMeOf. The positive electrode includes the layered oxide represented by the chemical formula, and the sodium battery includes the positive electrode. The electric apparatus includes the sodium battery. The layered oxide contained in the positive electrode material features high structural stability, gram capacity and energy density, and good cycling performance.

ELECTRODE ASSEMBLY AND ADHESIVE TAPE APPLICATION METHOD THEREFOR, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE

Resumen de: US20260269342A1

An electrode assembly includes: a first covering member disposed on a surface of the electrode assembly, where an information pattern is provided on the first covering member; and a second covering member disposed on the surface of the electrode assembly, where the information pattern is exposed outside the second covering member. The present application ranges the second covering member cover the surface of the electrode assembly to protect the electrode assembly through the second covering member and reduce the influence of the external environment on the electrode assembly. When the second covering member covers the electrode assembly, the information pattern is enabled to be exposed outside the second covering member.

Battery Pack

Resumen de: US20260269344A1

There is achieved a configuration that quickly measures a temperature of each unit cell in a battery pack in which a plurality of unit cells are aligned. In a battery pack in which a plurality of unit cells each containing a power generation element in a container and sealed with a lid 501 made of a metal are aligned, a heat transfer member 20 is bonded to the lid 501, an insulation layer 21 including a first wiring is bonded onto the heat transfer member 20, and a temperature detection sensor (thermistor) 30 is connected to the first wiring.

CATHODE ACTIVE MATERIAL AND METHOD FOR MANUFACTURING SAME

Resumen de: US20260265078A1

A method for manufacturing a cathode active material includes the steps of: preparing a preliminary cathode active material precursor containing nickel and manganese; preparing a doping source containing cobalt; providing the preliminary precursor into the doping source, followed by refluxing reaction, thereby preparing a cathode active material precursor; and mixing the cathode active material precursor and a lithium precursor, followed by firing, thereby manufacturing the cathode active material.

METHOD FOR PRODUCING A PRISMATIC BATTERY CELL, PRISMATIC BATTERY CELL AND MOTOR VEHICLE

Resumen de: US20260269434A1

A method for producing a prismatic battery cell includes providing an electrode stack with first and second electrodes stacked over one another. Arresters of the first electrodes protrude beyond an end face of the electrode stack in longitudinal direction. Arresters of the first electrodes are compacted and welded together, in particular by ultrasonic welding. The compacted arresters are disposed on a flat lateral surface of a contact element of a cell cover of a cell housing. The contact element forms a cell terminal. The compacted arresters are welded to the contact element, in particular by laser welding. The cell cover is disposed or pushed on the electrode stack such that the cell cover, or the lateral surface, is parallel to the end face. A prismatic battery cell and a motor vehicle including such a battery cell, are also provided.

Secondary Battery Electrode Tab Machining Apparatus and Electrode Tab Machining Method Using the Same

Resumen de: US20260269299A1

A secondary battery electrode tab machining apparatus and an electrode tab machining method using the same is provided. The electrode tab machining apparatus includes a lower jig and an upper jig for locating on lower and upper surfaces of an electrode tab, respectively. The lower jig includes a pair of lower flat portions on an upper surface of the lower jib and a lower ridge between the pair of lower flat portions. The upper jig includes a pair of upper float portions on a lower surface of the upper jig and an upper depression configured to engage with the lower ridge is between the pair of upper flat portions. When an electrode tab is pressed between the lower jig and the upper jig a connection portion formed in the electrode tab by a pair of incision lines.

POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

Resumen de: US20260269213A1

A positive electrode material includes a positive electrode active material, wherein the positive electrode active material comprises quasi-single particles, the quasi-single particles comprise 20 or fewer primary particles, and an average particle diameter (D50) of the primary particles is 1 to 3 μm. A method of manufacturing the same and a lithium secondary battery comprising the same are further provided.

Battery Cell and Battery Module Comprising the Same

Resumen de: US20260269383A1

A battery cell-according includes an electrode assembly including a cathode, an anode, and a separator; a battery case including a receiving portion which accommodates the electrode assembly; and a flame-retardant member located on an outer surface of the battery case. The receiving portion is a region of the battery case that is molded to protrude towards the outside of the battery case. A battery module including the battery cell is also provided.

BATTERY CAP AND BATTERY

Nº publicación: US20260269440A1 10/09/2026

Solicitante:

EVE POWER CO LTD [CN]
Eve Power Co., Ltd.

Resumen de: US20260269440A1

A battery cap and a battery. The battery cap includes a cap body, a conductive assembly, and a seal. The cap body is provided with a mounting hole. The conductive assembly includes an electrode pole disposed through the mounting hole. The electrode pole is provided with an electrolyte injection hole penetrating through. The seal plugs the electrolyte injection hole, and a length of the seal in a first direction is less than a length of the electrode pole in the first direction, the first direction being parallel to an axial direction of the electrolyte injection hole.