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    All-solid-state battery with layered current shunt part
    1.
    发明授权
    All-solid-state battery with layered current shunt part 有权

    公开(公告)号：US10700338B2

    公开(公告)日：2020-06-30

    申请号：US15924487

    申请日：2018-03-19

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hajime Hasegawa ,  Yuki Matsushita ,  Mitsuru Tateishi ,  Hideyo Ebisuzaki ,  Hideaki Nishimura ,  Yusuke Okuhata ,  Shigenori Hama ,  Norihiro Ose

    IPC: H01M2/34 ,  H01M10/0585 ,  H01M4/66 ,  H01M10/0562 ,  H01M10/052

    Abstract: Disclosed is an all-solid-state battery that makes it possible for a larger rounding current flow into a short-circuit current shunt part than to each electric element when the short-circuit current shunt part and the electric elements short-circuit in nail penetration testing. The all-solid-state battery includes at least one short-circuit current shunt part and a plurality of electric elements, the short-circuit current shunt part and the electric elements being stacked, wherein the short-circuit current shunt part includes a first current collector layer, a second current collector layer, and an insulating layer provided between the first and second current collector layers, all of the layers being stacked, each of the electric elements includes a cathode current collector layer, a cathode material layer, a solid electrolyte layer, an anode material layer, and an anode current collector layer, all of the layers being stacked, the electric elements are electrically connected to each other in parallel, the first current collector layer is electrically connected with the cathode current collector layer, the second current collector layer is electrically connected with the anode current collector layer, and contact resistance between the first and second current collector layers when pressure at 100 MPa is applied is lower than that between the cathode and anode current collector layers when pressure at 100 MPa is applied.

    Stacked battery
    2.
    发明授权
    Stacked battery 有权

    公开(公告)号：US10559845B2

    公开(公告)日：2020-02-11

    申请号：US15952301

    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: H01M10/00 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/02

    Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of 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, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, 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) an electron conductivity of the cathode active material layer in the surface-side cell is less than an electron conductivity of the cathode active material layer in the center-side cell; and condition ii) an electron conductivity of the anode active material layer in the surface-side cell is less than an electron conductivity of the anode active material layer in the center-side cell.

    SECONDARY BATTERY
    6.
    发明申请
    SECONDARY BATTERY 有权

    公开(公告)号：US20240396189A1

    公开(公告)日：2024-11-28

    申请号：US18630048

    申请日：2024-04-09

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Masahiro ISHIZUKA ,  Kosuke Suzuki ,  Hideto Mori ,  Mitsuru Tateishi ,  Shinya Ishikawa ,  Mari Tarutani ,  Kenta Kimura ,  Masato Ono

    IPC: H01M50/655 ,  H01M50/342 ,  H01M50/682

    Abstract: A secondary battery includes an electrode assembly, a housing, and a positive electrode terminal and a negative electrode terminal provided to the housing. The housing includes a main body with a first opening and a second opening respectively provided on opposite sides in a long-side direction of the housing, a first sealing body that closes the first opening, and a second sealing body that closes the second opening. The main body includes a pair of long-side surfaces and a pair of short-side surfaces facing each other in a short-side direction of the housing orthogonal to the long-side direction. The electrode assembly includes a negative electrode current collecting portion located on a first end side in the long-side direction, and a positive electrode current collecting portion located on a second end side in the long-side direction. One short-side surface of the pair of short-side surfaces is provided with an injection port.

    All-solid-state battery and method for producing all-solid-state battery
    8.
    发明授权
    All-solid-state battery and method for producing all-solid-state battery 有权

    公开(公告)号：US10651456B2

    公开(公告)日：2020-05-12

    申请号：US15935687

    申请日：2018-03-26

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hajime Hasegawa ,  Yuki Matsushita ,  Mitsuru Tateishi ,  Hideaki Nishimura ,  Hideyo Ebisuzaki ,  Yusuke Okuhata ,  Norihiro Ose ,  Shigenori Hama

    IPC: H01M2/34 ,  H01M10/0585 ,  H01M10/04 ,  H01M10/0562 ,  H01M10/0525

    Abstract: In an all-solid-state battery including at least one short-circuit current shunt part and at least one electric element which are stacked, when the battery is constrained, cracking etc. of the adhesive in the short-circuit current shunt pail is prevented.The all-solid-state battery includes at least one short-circuit current shunt part and at least one electric element which are stacked, to the all-solid-state battery constraint pressure being applied by a constraining member in a direction of stacking the short-circuit current shunt part and the electric element, wherein the short-circuit current shunt part includes a first current collector layer, a second current collector layer, and an insulating layer provided between the first and second current collector layers, all of these layers being stacked along the direction, to be adhered to each other with adhesive, the electric element includes a cathode current collector layer, a cathode material layer, a solid electrolyte layer, an anode material layer, and an anode current collector layer, all of these layers being stacked along the direction, the first current collector layer is electrically connected with the cathode current collector layer, the second current collector layer is electrically connected with the anode current collector layer, and the adhesive is provided for a zone in the short-circuit current shunt part, to the zone the constraint pressure from the constraining member not being applied.

    Stacked battery
    10.
    发明授权
    Stacked battery 有权

    公开(公告)号：US10665850B2

    公开(公告)日：2020-05-26

    申请号：US15941116

    申请日：2018-03-30

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hajime Hasegawa ,  Yuki Matsushita ,  Mitsuru Tateishi ,  Hideyo Ebisuzaki ,  Hideaki Nishimura ,  Yusuke Okuhata ,  Shigenori Hama ,  Norihiro Ose

    IPC: H01M2/34 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/04 ,  H01M10/0562

    Abstract: Disclosed is a stacked battery including at least one short-circuit current shunt part and electric elements, wherein: the shunt part includes first and second current collector layers, and an insulating layer provided between the first and second current collector layers, all of these layers being stacked; each power generation element includes a cathode current collector layer, a cathode material layer, an electrolyte layer, an anode material layer, and an anode current collector layer all of these layers being stacked; the first current collector layer is electrically connected to the cathode current collector layer and the second current collector layer to the anode current collector layer; the electric elements are electrically connected in parallel; and the shunt part next to the electric elements includes a PPTC layer between the first current collector layer and the insulating layer and/or between the second current collector layer and the insulating layer.

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