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    ALL-SOLID-STATE BATTERY
    2.
    发明申请
    ALL-SOLID-STATE BATTERY 审中-公开

    公开(公告)号：US20180294468A1

    公开(公告)日：2018-10-11

    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 ,  H01M10/0562 ,  H01M4/66

    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.

    BATTERY CELL AND BATTERY MODULE
    5.
    发明申请
    BATTERY CELL AND BATTERY MODULE 有权

    公开(公告)号：US20250149756A1

    公开(公告)日：2025-05-08

    申请号：US18932622

    申请日：2024-10-31

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kota OHATA ,  Masahiro ISHIZUKA ,  Hajime HASEGAWA ,  Mitsuru TATEISHI ,  Norihiro OSE ,  Masashi CHIHARA

    IPC: H01M50/553 ,  H01M50/119 ,  H01M50/176

    Abstract: A battery cell includes: a laminate exterior body formed of a laminate containing a metal layer; an electrode body accommodated inside the laminate exterior body, in which electrode body a positive electrode and a negative electrode are laminated with one another sandwiching a separator; a pair of tabs that are connected with, respectively, the positive electrode and the negative electrode and that project outside the laminate exterior body; and a pair of conductive members that are electrically connected with the metal layer and disposed to be separated from the tabs, the conductive members respectively making contact with the pair of tabs in association with a swelling of the laminate exterior body.

    METHOD FOR MANUFACTURING BATTERY
    6.
    发明申请
    METHOD FOR MANUFACTURING BATTERY 有权

    公开(公告)号：US20250105480A1

    公开(公告)日：2025-03-27

    申请号：US18789921

    申请日：2024-07-31

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Mitsuru TATEISHI ,  Hajime Hasegawa ,  Tomoyuki Kawai ,  Kisena Yoshida

    IPC: H01M50/609 ,  H01M10/0568 ,  H01M10/44

    Abstract: A method for manufacturing a battery, including: a first injection step of injecting a first electrolytic solution that contains lithium bis(fluorosulfonyl)imide into an electrode body having a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; a first charging step of performing first charging after the first injection step; a first aging step of performing aging treatment after the first charging step; a second injection step of injecting a second electrolytic solution that does not contain lithium bis(fluorosulfonyl)imide into the electrode body after the first aging step; a second charging step of performing second charging after the second injection step; and a second aging step of performing aging treatment after the second charging step.

    SECONDARY BATTERY AND BATTERY MODULE
    7.
    发明申请
    SECONDARY BATTERY AND BATTERY MODULE 有权

    公开(公告)号：US20240396187A1

    公开(公告)日：2024-11-28

    申请号：US18632481

    申请日：2024-04-11

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Masahiro ISHIZUKA ,  Kosuke SUZUKI ,  Hideto MORI ,  Mitsuru TATEISHI ,  Shinya ISHIKAWA ,  Mari TARUTANI ,  Kenta KIMURA ,  Masato ONO

    IPC: H01M50/548 ,  H01M50/186 ,  H01M50/30 ,  H01M50/538

    Abstract: A secondary battery includes an electrode assembly, a housing that houses the electrode assembly, a positive electrode terminal, and a negative electrode terminal. The housing includes a main body with a first opening and a second opening respectively provided on opposite sides in a long-side direction, 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 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 a single pressure release valve.

    ANODE, AND SULFIDE SOLID-STATE BATTERY
    8.
    发明申请
    ANODE, AND SULFIDE SOLID-STATE BATTERY 审中-公开

    公开(公告)号：US20190305294A1

    公开(公告)日：2019-10-03

    申请号：US16354426

    申请日：2019-03-15

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Mitsuru TATEISHI ,  Yusuke OKUHATA ,  Hajime HASEGAWA ,  Hirokazu KAWAOKA ,  Hideaki MIYAKE

    IPC: H01M4/134 ,  H01M10/0562 ,  H01M4/66 ,  H01M4/38 ,  H01M10/0585

    Abstract: Copper reacts with a sulfide solid electrolyte to generate copper sulfide when an anode current collector layer made from copper, and an anode mixture layer containing the sulfide solid electrolyte are used to compose an anode, and the resistance of the interface between the anode current collector layer and the anode mixture layer increases. To alloy an anode current collector layer to lower the reactivity to a sulfide solid electrolyte, specifically, an anode includes: an anode mixture layer; and an anode current collector layer that is in contact with the anode mixture layer, wherein the anode mixture layer contains an anode active material and a sulfide solid electrolyte, and at least a surface of the anode current collector layer is made from material that contains an alloy of copper and metal of a higher ionization tendency than copper, the surface being in contact with the anode mixture layer.

    STACKED BATTERY
    9.
    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.

    BATTERY
    10.
    发明申请
    BATTERY 有权

    公开(公告)号：US20250158211A1

    公开(公告)日：2025-05-15

    申请号：US18900910

    申请日：2024-09-30

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kota OHATA ,  Masahiro ISHIZUKA ,  Hajime HASEGAWA ,  Mitsuru TATEISHI ,  Norihiro OSE ,  Masashi CHIHARA

    IPC: H01M50/333 ,  H01M50/103

    Abstract: A battery including: an electrode body and a laminate exterior body accommodating the electrode body at an interior thereof. The laminate exterior body has a mechanism that switches from the closed state to the open state when a pressure of the interior of the laminate exterior body exceeds a threshold value. The laminate exterior body has a rectangular parallelepiped shape, and has first sides extending in a first direction and second sides extending in a second direction orthogonally intersecting the first direction. The mechanism is positioned within a virtual region enclosed by first virtual straight lines including the pair of first sides and by second virtual straight lines including the pair of second sides. A length of the mechanism is shorter than a length of the laminate exterior body in a third direction orthogonally intersecting each of the first direction and the second direction.

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