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    All-solid-state battery and method for producing all-solid-state battery
    5.
    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.

    Battery
    6.
    发明授权
    Battery 有权

    公开(公告)号：US10439260B2

    公开(公告)日：2019-10-08

    申请号：US15610122

    申请日：2017-05-31

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hideyo Ebisuzaki ,  Hideaki Nishimura ,  Yuki Matsushita

    IPC: H01M10/657 ,  H01M10/617 ,  H01M10/655 ,  H01M10/42 ,  H01M10/04 ,  H01M10/647 ,  H01M10/654 ,  H01M10/6555 ,  H01M10/613 ,  H01M10/659 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0585

    Abstract: A battery that can inhibit temperature rising when generating heat due to a short circuit etc., while inhibiting degradation of the battery output performance, includes a plurality of unit batteries stacked together; and an endothermic layer arranged between the unit batteries adjacent in a stacking direction, the layer including an endothermic material, wherein each unit battery includes: a pair of current collectors; and at least one electrode body, wherein: the pair of current collectors are arranged to both ends of the unit battery in the stacking direction respectively, the electrode body includes a first pole active material layer, a second pole active material layer which is different from the first pole active material layer, and a solid electrolyte layer; the first and second pole active material layer are arranged between the pair of current collectors; and the current collectors have contact with the first or second pole active material layer.

    All-solid-state battery
    7.
    发明授权
    All-solid-state battery 有权

    公开(公告)号：US10854880B2

    公开(公告)日：2020-12-01

    申请号：US16149252

    申请日：2018-10-02

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Hideyo Ebisuzaki ,  Hideaki Nishimura

    IPC: H01M4/62 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/058 ,  H01M10/04 ,  H01M4/131 ,  H01M4/36 ,  H01M10/0562 ,  H01M10/052 ,  H01M10/0585

    Abstract: An all-solid-state battery including a laminated body with a cathode current collecting layer, cathode active material layer, solid electrolyte layer, anode active material layer, and anode current collecting layer in this order, and a restraining member that applies a restraining pressure to the laminated body in a laminated direction; containing a conductive material, an insulating inorganic substance, and a polymer, is in at least one of a position between the cathode active material layer and the cathode current collecting layer, and a position between the anode active material layer and the anode current collecting layer; the content of the insulating inorganic substance in the PTC layer is 10 volume % or more and 40 volume % or less; and a proportion of a particle size D90 of the insulating inorganic substance, D90, to a thickness of the PTC layer, TPTC, regarded as D90/TPTC is 0.6 or more and 1.0 or less.

    All-solid-state battery with layered current shunt part
    8.
    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
    9.
    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.

    All-solid-state battery
    10.
    发明授权
    All-solid-state battery 有权

    公开(公告)号：US10468724B2

    公开(公告)日：2019-11-05

    申请号：US15285518

    申请日：2016-10-05

    Applicant: Toyota Jidosha Kabushiki Kaisha

    Inventor： Hideyo Ebisuzaki ,  Masashi Kodama

    IPC: H01M10/00 ,  H01M10/0585 ,  H01M10/0525 ,  H01M10/0562

    Abstract: An all-solid-state battery able to inhibit internal short-circuiting that occurs in the case of a rise in battery temperature during improper use, etc., of the all-solid-state battery is provided. The all-solid-state battery (100) has a positive electrode active material layer (10), a solid electrolyte layer (20) and a negative electrode active material layer (30) in that order, and the solid electrolyte layer (20) has solid electrolyte particles (14) and additive particles (22). The additive particles have a melting point of 700° C. or higher and are electrochemically inert. The ratio of the median diameter (D50) of the additive particles to the thickness of the solid electrolyte layer (20) is 0.4 to 0.8.

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