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    ALL SOLID STATE BATTERY
    1.
    发明公开
    ALL SOLID STATE BATTERY 审中-公开

    公开(公告)号：US20230216020A1

    公开(公告)日：2023-07-06

    申请号：US18170586

    申请日：2023-02-17

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Yuki MATSUSHITA ,  Kazuo YASO

    IPC: H01M4/13 ,  H01M4/36 ,  H01M4/62 ,  H01M4/64

    CPC classification number: H01M4/13 ,  H01M4/366 ,  H01M4/621 ,  H01M4/64 ,  H01M2300/0065 ,  H01M6/187

    Abstract: A main object of the present disclosure is to provide an all solid state battery wherein interface resistance between a current collector and an active material layer is low. In the present disclosure, the above object is achieved by providing an all solid state battery comprising: an electrode including a current collector, an electron conductive layer, and an active material layer, in this order, and a solid electrolyte layer formed on the active material layer side of the electrode, and the electron conductive layer is an agglutinate of metal particles or a metal foil, and electron conductivity of the electron conductive layer is 1×103 S/cm or more at 25° C.

    STACKED BATTERY
    2.
    发明申请
    STACKED BATTERY 审中-公开

    公开(公告)号：US20190319252A1

    公开(公告)日：2019-10-17

    申请号：US16285643

    申请日：2019-02-26

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hajime HASEGAWA ,  Norihiro OSE ,  Hideaki NISHIMURA ,  Yuki MATSUSHITA

    IPC: H01M2/34 ,  H01M10/04 ,  H01M10/0585 ,  H01M10/0562 ,  H01M4/66

    Abstract: In the stacked battery, a short-circuit current shunt part is electrically connected to the electric elements, and an insulating layer of the short-circuit current shunt part is constituted of material having a predetermined melting point or glass transition temperature. When heat is excessively generated in the battery due to internal short circuits etc. and the temperature of the battery reaches the melting point of the insulating layer, the insulating layer melts and its shape is changed to short-circuit the short-circuit current shunt part, and current flows from the electric elements into the short-circuit current shunt part. To measure the current flowing into the short-circuit current shunt part makes it possible to easily grasp excessive heat generation of the battery to suppress deterioration of the battery due to heat generation.

    STACKED BATTERY
    3.
    发明申请
    STACKED BATTERY 审中-公开

    公开(公告)号：US20180316065A1

    公开(公告)日：2018-11-01

    申请号：US15952450

    申请日：2018-04-13

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hajime HASEGAWA ,  Yuki MATSUSHITA ,  Hideaki NISHIMURA ,  Yusuke OKUHATA ,  Norihiro OSE ,  Mitsuru TATEISHI ,  Shigetaka NAGAMATSU ,  Takayuki UCHIYAMA ,  Shigenori HAMA ,  Dai KATO ,  Naohiro MASHIMO ,  Hideyo EBISUZAKI ,  Ayano KOBAYASHI ,  Hisataka FUJIMAKI

    IPC: H01M10/42 ,  H01M10/0585 ,  H01M2/26 ,  H01M4/38

    Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a short circuit resistance among a plurality of cells, is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector with a cathode current collecting tab, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector with an anode current collecting tab, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and the surface-side cell and the center-side cell satisfy at least one of: condition i) a resistance of the cathode current collecting tab in the surface-side cell is more than a resistance of the cathode current collecting tab in the center-side cell; and condition ii) a resistance of the anode current collecting tab in the surface-side cell is more than a resistance of the anode current collecting tab in the center-side cell.

    SOLID-STATE BATTERY
    4.
    发明申请
    SOLID-STATE BATTERY 有权

    公开(公告)号：US20220006126A1

    公开(公告)日：2022-01-06

    申请号：US17364860

    申请日：2021-06-30

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Koji OKUDA ,  Yuki MATSUSHITA

    IPC: H01M10/0585 ,  H01M50/124

    Abstract: A solid-state battery includes an electrode assembly including a plurality of unit stacked bodies arranged in a stacking direction, and a laminate film that seals the electrode assembly. Each of the plurality of unit stacked bodies includes a positive electrode layer, a negative electrode layer, a solid electrolyte layer, and an insulating layer. A thickness of the insulating layer of the unit stacked body disposed on one end surface side of the electrode assembly is greater than a thickness of the insulating layer of the unit stacked body provided on the central side of the electrode assembly.

    ELECTRODE FOR SOLID-STATE BATTERIES AND SOLID-STATE BATTERY
    6.
    发明申请
    ELECTRODE FOR SOLID-STATE BATTERIES AND SOLID-STATE BATTERY 审中-公开

    公开(公告)号：US20200035988A1

    公开(公告)日：2020-01-30

    申请号：US16519064

    申请日：2019-07-23

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Norihiro OSE ,  Tomoya SUZUKI ,  Hajime HASEGAWA ,  Kazuo YASO ,  Hideaki NISHIMURA ,  Yuki MATSUSHITA

    IPC: H01M4/13 ,  H01M4/62 ,  H01M2/34

    Abstract: An electrode for solid-state batteries, comprising a PTC resistor layer, and a solid-state battery comprising the electrode. The electrode may be an electrode for solid-state batteries, wherein the electrode comprises an electrode active material layer, a current collector and a PTC resistor layer which is disposed between the electrode active material layer and the current collector and which is in contact with the electrode active material layer; wherein the PTC resistor layer contains an electroconductive material, an insulating inorganic substance and a polymer; and wherein a surface roughness Ra of an electrode active material layer-contacting surface of the PTC resistor layer, is 1.1 μm or less.

    ELECTRODE CURRENT COLLECTOR, ALL SOLID STATE BATTERY, AND METHOD FOR PRODUCING ELECTRODE CURRENT COLLECTOR
    8.
    发明申请
    ELECTRODE CURRENT COLLECTOR, ALL SOLID STATE BATTERY, AND METHOD FOR PRODUCING ELECTRODE CURRENT COLLECTOR 审中-公开

    公开(公告)号：US20190245210A1

    公开(公告)日：2019-08-08

    申请号：US16260467

    申请日：2019-01-29

    Applicant: Toyota Jidosha Kabushiki Kaisha

    Inventor： Yuki MATSUSHITA

    IPC: H01M4/66 ,  H01M4/82

    CPC classification number: H01M4/667 ,  H01M4/82

    Abstract: A main object of the present disclosure is to provide an electrode current collector in which the peel-off of a coating layer and an aluminum oxide layer is inhibited. The present disclosure achieves the object by providing an electrode current collector to be used in an all solid state battery, the electrode current collector comprising: a current collecting layer, an aluminum oxide layer, and a coating layer containing a conductive material, a resin, and an inorganic filler, in this order; and the current collecting layer has a porous structure on a surface of the aluminum oxide layer side.

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