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Cathode active material for lithium secondary battery and manufacturing method for the same

Resumen de: US2025266431A1

Disclosed is a cathode active material for a lithium secondary battery, including a first carbon coating layer formed on the surface of a core component containing lithium and configured to cover the core component and prevent dissolution of metal elements contained in the core component, and a second carbon coating layer formed on the surface of the first carbon coating layer and configured to have a lower carbon density and higher ionic conductivity than the first carbon coating layer.

수산화물을 포함하는 분말 물질 및 이의 제조 방법

Resumen de: WO2024141379A1

The present invention relates to a powderous material comprising a hydroxide or oxyhydroxide of one or more metal elements for preparing a positive electrode active material for secondary batteries, wherein the one or more metal elements include at least one of Ni, Co and Mn, wherein the material comprises secondary particles comprising a plurality of primary particles, wherein the material has a median particle size D50 between 3.0 μm and 20.0 μm as determined by laser diffraction, wherein said primary particles have a particle- based thickness distribution as determined by measuring primary particle thickness in an image taken by SEM, wherein said thickness distribution has a median thickness between 180 nm and 600 nm, andwherein the material has a span value (D90-D10)/D50 being at most 0.6, preferably at most 0.4, more preferably at most 0.2.

BATTERY MODULE COMPRISING THERMAL BARRIER AND BATTERY PACK COMPRISING THE SAME

Resumen de: KR20250128659A

본 개시에 따르면, 벤팅 홀이 형성된 모듈 커버를 포함하는 모듈 하우징, 상기 모듈 하우징 내에 수용된 복수의 배터리 셀들, 및 상기 복수의 배터리 셀들 중 적어도 일부 사이에 위치한 단열 부재를 포함하는 제1 써멀 배리어를 포함하는 배터리 모듈이 제공될 수 있다. 상기 단열 부재는 상기 벤팅 홀과 대면하는 상부 영역 및 상기 상부 영역의 일부분에서 돌출되고, 상기 벤팅 홀 내에 위치한 돌출부를 포함하고, 상기 돌출부는 상기 모듈 커버와 이격될 수 있다.

NANOCOMPOSITE OF NIOBIUM DISELENIDE AND POLYPYRROLE

Resumen de: KR20250128597A

본 개시는 NbSe2 및 폴리피롤층을 포함하는 나노복합체의 제조방법으로, 복수 개의 NbSe2 층들을 포함하는 벌크(bulk) NbSe2를 박리하여 (exfoliate), NbSe2의 단층 시트를 수득하는 단계; 및 상기 NbSe2의 단층 시트의 표면을 폴리피롤로 코팅하는 단계를 포함하는, 나노복합체의 제조방법을 제공한다.

Method for testing battery plate

Resumen de: KR20250128511A

배터리의 극판 테스트 방법이 개시된다. 본 발명의 일 측면에 따른 배터리의 극판 테스트 방법은, 원통형 배터리에 포함되는 극판을 테스트하는 배터리의 극판 테스트 방법에 있어서, 상기 극판을 일정 크기로 절단하는 절단 단계; 상기 극판을 검사 핀에 걸치는 안착 단계; 상기 극판의 양쪽 끝단을 당기는 인장 단계; 및 상기 극판의 크랙 유무를 측정하는 측정 단계; 를 포함할 수 있다.

APPARATUS FOR DIAGNOSING BATTERY AND METHOD THEREOF

Resumen de: KR20250128869A

배터리 진단 장치는 적어도 하나의 인스트럭션을 저장하는 메모리, 및 상기 적어도 하나의 인스트럭션을 실행하는 적어도 하나의 프로세서를 포함하고, 상기 적어도 하나의 프로세서는, 배터리 셀에 대한 특정한 충전 속도의 충전 구간 및 제1 휴지 구간이 교대로 반복되는 충전 프로세스를 실행하거나, 또는 상기 배터리 셀에 대한 특정한 방전 속도의 방전 구간 및 제2 휴지 구간이 교대로 반복되는 방전 프로세스를 실행하고, 상기 충전 프로세스, 또는 상기 방전 프로세스를 실행하는 과정에서, 상기 배터리 셀의 저항을 획득하고, 상기 배터리 셀의 저항에 기반하여, 상기 배터리 셀의 충전 용량을 진단할 수 있다.

Secondary battery with exterior insulating tape and manufacturing method thereof

Resumen de: WO2025178163A1

The present invention relates to an external insulating tape attached to the outside of a case, a secondary battery to which the insulating tape is applied, and a manufacturing method thereof. The technical problem to be solved is to provide an insulating tape capable of being attached to the entire outer surface of a case including a surface on which an external terminal of a secondary battery is installed, a secondary battery to which the insulating tape is applied, and a manufacturing method thereof. To this end, the present invention provides a secondary battery comprising: an electrode assembly; a case in which the electrode assembly is embedded; a cap plate bonded to the case and including a terminal connected to the electrode assembly; and an insulating tape attached to an outer surface of the case, wherein the outer surface of the case comprises a surface of the cap plate, and the insulating tape comprises an upper surface attachment part attached to the surface of the cap plate.

Electrode assembly insertion guide and electrode assembly inserting method using the same

Resumen de: US2025266491A1

The present disclosure relates to an electrode assembly insertion guide including a body part detachably coupled to an edge of an opening part formed by opening one surface of an accommodation case, and a coupling part formed by recessing one surface of the body part facing the opening part along a direction from an inside of the accommodation case toward the opening part, and an electrode assembly inserting method.

CURRENT COLLECTOR FOR ELECTRODE HAVING FUSE-INTEGRATED UNCOATED PORTION AND SECONDARY BATTERY INCLUDING THE SAME

Resumen de: WO2025178182A1

A current collector for an electrode having a fuse-integrated uncoated part according to an embodiment of the present invention may comprise: an electrode plate made of a metal material on which an electrode active material is applied or coated; and an uncoated part which is formed at one end of the electrode plate and in which the electrode active material does not exist, wherein the uncoated part includes a current path part having a width direction length narrower or shorter than the other parts and a cut part formed on one side of the current path part so that the uncoated part does not exist therein, and a reinforcement part provided to cover at least one of the current path part and the cut part or provided not to cover all or a part of the current path part is attached to at least one surface of both surfaces of the uncoated part.

ELECTRODE MIXTURE AND BATTERY

Resumen de: US2025266461A1

An object of the present disclosure is to provide an electrode mixture that can improve battery capacity, and a battery comprising the electrode mixture. The electrode mixture of the disclosure comprises hard carbon. The electrode mixture of the disclosure comprises a metal oxide. The metal element constituting the metal oxide is a period 4 d-block element, and the ratio of the mass of the metal oxide with respect to the total mass of the hard carbon and metal oxide is less than 10 mass %. The battery of the disclosure comprises a negative electrode collector layer, negative electrode active material layer, electrolyte layer, positive electrode active material layer and positive electrode collector layer in that order, and either the negative electrode active material layer or the positive electrode active material layer comprises an electrode mixture of the disclosure.

Method for recovering high purity iron from waste lithium iron phosphate using a dry smelting process

Resumen de: KR20250128897A

본 발명은 폐 리튬인산철로부터 고순도의 철 회수 방법에 관한 것으로, 폐 리튬인산철(LiFePO4, LFP)의 파쇄물을 산소 분위기에서 열처리하는 제1 단계; 제1 단계가 완료된 폐 리튬인산철의 파쇄물에 플럭스를 첨가하고 무산소 분위기에서 열처리하여 생성된 용융물로부터 FeO 함유 슬래그를 회수하는 제2 단계; 제2 단계에서 회수한 FeO 함유 슬래그에 환원제를 첨가하고 불활성 분위기에서 열처리하여 생성된 용융물을 회수하는 제3 단계; 제3 단계에서 회수한 용융물에 산소 가스를 주입하는 제4 단계; 및 제4 단계가 완료된 용융물에 FeS2를 첨가하고 불활성 분위기에서 열처리하는 제5 단계; 통해, 구리 및 인이 제거된 고순도의 철 금속을 회수할 수 있다.

Secondary battery employing shock absorbing part and manufacturing method thereof

Resumen de: US2025266592A1

A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly therein; and a buffer arranged between the electrode assembly and the case and repeatedly bent a plurality of times.

Electrolyte impregnation inspection equipment electrolyte impregnation inspection method and manufacturing method of lithium secondary battery using the same

Resumen de: KR20250128715A

예시적인 실시예들에 따르면, 전해액의 함침도 검사 설비가 제공된다. 상기 검사 설비는 가열부, 냉각부, 열화상 카메라가 순차 배치되고, 전지케이스의 비열과 전해액의 비열 차이는, 가열 및 냉각 과정을 거친 전지셀의 열화상에서 미 함침 전해액 부위의 구분이 가능하도록 하므로, 전지셀의 열화상에 기반하여 전해액의 함침 정도를 정략적으로 판단할 수 있다.

Grinding apparatus for rechargeable battery materials

Resumen de: US2025262624A1

A grinding apparatus of the present disclosure includes a body member including an inlet through which raw material is introduced; a fixing member installed inside the body member; a rotation member installed inside the body member and positioned spaced apart from the fixing member; and a driving member installed outside of the body member and configured to rotate the rotation member, wherein the rotation member includes a disk coupled to the driving member; a first pattern inserted to a certain depth on the disk and including a plurality of first lines positioned parallel to each other; a second pattern inserted at a certain depth on the disk and including a plurality of second lines arranged to intersect the plurality of first lines and positioned parallel to each other; and a grinding portion positioned between the first lines and the second lines, and protrudes to the outside to grind raw material.

METHOD FOR CONTROLLING BATTERY ASSEMBLY AND SYSTEM FOR BATTERY MANAGEMENT

Resumen de: US2025264893A1

A method of controlling a battery assembly comprising, measuring a pressure applied to a battery assembly to obtain a measured pressure value, receiving battery operating data of the battery assembly, estimating a sensitivity of battery input and output based on the measured pressure value and the battery operating data and generating a pressure control command based on the sensitivity of battery input and output and the battery operating data, wherein the sensitivity of battery input and output represents a sensitivity of the battery assembly to the pressure applied to the battery assembly.

Manufacturing equipment for secondary battery

Resumen de: US2025262639A1

A secondary battery manufacturing device is provided that includes a case portion provided with a nozzle configured to face a base material being moved by a coating roll. A cavity portion is positioned inside the case portion, with the cavity portion forming a conduit for transferring a coating solution to the nozzle. A vent portion is provided that has a first side surrounding an inlet to the cavity portion and a second side extends to the outside of the case portion to form a path for discharging gas. A filtering portion is positioned between the cavity portion and the vent portion, with the filtering portion being configured to direct gas contained in the coating solution in a direction toward the vent portion and prevent liquid of the coating solution from being directed to the vent portion.

Secondary battery with multi-storey electrode assemblies and method of manufacturing the same

Resumen de: WO2025178162A1

The present invention relates to a secondary battery having a structure in which a plurality of electrode assemblies is stacked and a manufacturing method thereof. The technical problem to be solved is to propose a secondary battery having a structure in which a plurality of electrode assemblies is stacked within one battery case, so as to be alternatively utilized in an application of configuring and using a battery module/pack by stacking secondary batteries. To this end, the present invention provides a secondary battery comprising: a secondary battery case; a plurality of electrode assemblies which are vertically stacked and embedded in the case and each of which has an electrode tab; a current collecting part connected to each electrode tab of the plurality of stacked electrode assemblies; and a cap plate which is bonded to the case and with which a terminal connected to the current collecting part is assembled.

BATTERY CELL, BATTERY, AND ELECTRICAL DEVICE

Resumen de: US2025273747A1

A battery cell includes an electrode assembly housed in a shell. The electrode assembly comprises a plurality of electrode sheets of opposite polarities and separators interposed therebetween. The electrode sheets and separators are wound along a winding direction to form a wound structure. At least one electrode sheet includes a current collector substrate and a plurality of tabs. The tabs are connected to a side edge of the substrate extending in the winding direction and are spaced apart along that direction. At least some of the tabs are bent toward the winding axis, forming a tab stack at an end of the wound structure. The battery cell further includes conductive members welded to the tab stack and electrically connected to an electrode terminal located on a wall of the shell. Also disclosed are a battery including the battery cell and an electrical device incorporating the battery.

FLEXIBLE BATTERY

Resumen de: US2025273736A1

A flexible battery can include a cathode current collector; a cathode disposed on the cathode current collector; an anode current collector; an anode disposed on the anode current collector; a separator disposed between the cathode and the anode; an electrolyte interspersed within the cathode, the separator, and the anode; and a casing enclosing the cathode current collector, the cathode, the separator, the anode, and the anode current collector.

IMPROVED SOLID-STATE IONIC CONDUCTING MATERIALS AND METHODS OF MAKING THE SAME

Resumen de: US2025273733A1

Improved solid electrolyte materials and methods of treating solid electrolyte materials to yield improved solid electrolyte material are described. The improved solid electrolyte material includes one or more near surface regions to which compressive stress is applied via ion implantation in order to strengthen the solid electrolyte material against, e.g., anode material dendrite penetration. Methods of treating the solid electrolyte material include subjecting the solid electrolyte material to ion implantation to thereby create a first and second region having ions implanted therein. The ion fluence in the second region may be greater than the ion fluence in the first region.

SOLID-STATE BATTERY WITH MULTILAYER SOLID-STATE ELECTROLYTE

Resumen de: US2025273732A1

Aspects of the disclosure include a solid-state battery with a multilayer solid-state electrolyte. An exemplary vehicle includes an electric motor and a battery pack electrically coupled to the electric motor. The battery pack includes a battery cell that includes an anode current collector and a composite anode layer having an anode active material embedded with a first low-voltage solid-state electrolyte. The battery pack includes a cathode current collector and a composite cathode layer having a cathode active material embedded with a first high-voltage solid-state electrolyte. A multilayer solid-state electrolyte is between the composite anode layer and the composite cathode layer. The multilayer solid-state electrolyte includes a second low-voltage solid-state electrolyte, a second high-voltage solid-state electrolyte, and an interlayer solid-state electrolyte directly between the second low-voltage solid-state electrolyte and the second high-voltage solid-state electrolyte.

APPARATUS, SYSTEM AND METHOD FOR BATTERY FORMATION

Resumen de: US2025273734A1

A method of processing a battery including an electrode including pores filled with a gas involves applying a formation current to the battery, the formation current comprising at least one frequency attribute, the at least one frequency attribute based on an assessed dielectric attribute associated with wetting the pores with electrolyte. A method of processing a battery including a battery comprising an electrode involves applying a formation current to the battery comprising at least one frequency attribute, the at least one frequency attribute based on an assessed dielectric attribute associated with forming a solid electrolyte interphase (SEI) layer on the electrode.

METHOD FOR ENHANCING THE SAFETY OF A METAL-ION BATTERY

Resumen de: US2025273748A1

A method for enhancing the safety of a metal-ion electrochemical device comprises steps of providing a metal-ion electrochemical device that at least includes a positive electrode, a negative electrode, and a separator disposed therebetween; the negative electrode comprises a negative electrode current collector coated with a negative electrode active material, and a metal-ion-affinitive layer is positioned between the negative electrode current collector and the negative electrode active material; charging and discharging the metal-ion electrochemical device to induce the deposition of a metal-ion dendrite layer between the negative electrode active material and the metal-ion-affinitive layer. By introducing the metal-ion-affinitive layer, the present invention effectively restricts the deposition of lithium dendrites between the negative electrode current collector and the negative electrode active material under normal, overcharging, or rapid charging and discharging conditions. This significantly reduces the risk of contact and penetration of the separator by lithium metal dendrites preventing battery short circuits.

ELECTRODE ASSEMBLY AND MANUFACTURING METHOD THEREOF, BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUS

Resumen de: US2025273744A1

Embodiments of the present application provides an electrode assembly and a manufacturing method thereof, a battery cell, a battery, and an electrical apparatus. The electrode assembly comprises: a first electrode plate; and at least two second electrode plates stacked and bent to form at least one bent portion, the bent portion comprising at least one bent section and at least two straight sections, two adjacent straight sections being connected through the bent section, where for each bent portion, the first electrode plate is provided between two adjacent straight sections, and the polarity of the first electrode plate is opposite to the polarity of the adjacent second electrode plate.

ELECTRICALLY TRIGGERED VENTING VALVES

Nº publicación: US2025273802A1 28/08/2025

Solicitante:

SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD

Resumen de: US2025273802A1

The present disclosure refers to a battery system including a battery housing, battery cells in the battery housing, electronic venting valves at the battery housing, and configured to be adjusted between an open position and a closed position via an electronic actuator, and a control unit configured to control the electronic venting valves to concurrently or substantially simultaneously open during a thermal runaway.