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    BATTERY MODULE
    1.
    发明申请
    BATTERY MODULE 审中-公开

    公开(公告)号：US20190229310A1

    公开(公告)日：2019-07-25

    申请号：US16223369

    申请日：2018-12-18

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Seigo FUJISHIMA

    IPC: H01M2/10 ,  H01M8/24 ,  H01M8/10 ,  H01M10/48 ,  H01M10/04 ,  H01M10/0525

    Abstract: A displacement adjustment member provided in a battery module disclosed herein has at least a first elastic body and a second elastic body capable of undergoing elastic deformation in the stacking direction of unit cells. The first elastic body is made of an elastic body in which an elastic deformation extent, with respect to a predetermined load, is relatively larger than that of the second elastic body.

    CELL PACK AND METHOD FOR PRODUCING AND METHOD FOR DISASSEMBLING THE SAME
    2.
    发明申请
    CELL PACK AND METHOD FOR PRODUCING AND METHOD FOR DISASSEMBLING THE SAME 审中-公开

    公开(公告)号：US20190221795A1

    公开(公告)日：2019-07-18

    申请号：US16220286

    申请日：2018-12-14

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Seigo FUJISHIMA ,  Masayuki KITAURA

    IPC: H01M2/10 ,  H01M2/34 ,  H01M10/04

    CPC classification number: H01M2/1077 ,  H01M2/345 ,  H01M10/0481

    Abstract: Provided are a cell pack having a restraint mechanism which is unlikely to be loosened or broken even when a restraining pressure is applied which is higher than, for example, in the related art, and also a method for producing and a method for disassembling the cell pack. A cell pack includes a plurality of unit cells arranged in an arrangement direction and a restraint mechanism for restraining these unit cells. The restraint mechanism includes: a first end plate portion disposed at an end portion in a first direction of the arrangement direction of the plurality of unit cells; a second end plate portion disposed at an end portion in a second direction of the arrangement direction of the plurality of unit cells; and a ring-shaped restraining hoop portion including a first support portion disposed on a surface of the first end plate portion in the first direction, a second support portion disposed on a surface of the second end plate portion in the second direction, and a pair of side wall portions continuously connecting the first support portion and the second support portion along the arrangement direction. A dimension in the arrangement direction between the first end plate portion and the second end plate portion of the restraining hoop portion is set such that a predetermined restraining pressure is applied in a direction of compressing the plurality of unit cells along the arrangement direction.

    METHOD FOR PRODUCING SECONDARY BATTERY
    3.
    发明申请
    METHOD FOR PRODUCING SECONDARY BATTERY 有权

    公开(公告)号：US20250087662A1

    公开(公告)日：2025-03-13

    申请号：US18825574

    申请日：2024-09-05

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Seigo FUJISHIMA

    IPC: H01M4/04

    Abstract: To provide a method for producing a secondary battery, which is configured to suppress the occurrence of warpage of a current collector during the welding of the resin member to the current collector. A method for producing a secondary battery comprising a current collector comprising a first metal foil and a second metal foil and a resin member welded to a peripheral portion of the current collector, wherein the method comprises welding the resin member to the current collector that is arranged to be sandwiched by the resin member; wherein the first metal foil has a first linear expansion coefficient; wherein the second metal foil has a second linear expansion coefficient; wherein the first linear expansion coefficient is larger than the second linear expansion coefficient.

    MANUFACTURING METHOD OF POWER STORAGE DEVICE
    4.
    发明公开
    MANUFACTURING METHOD OF POWER STORAGE DEVICE 审中-公开

    公开(公告)号：US20240030459A1

    公开(公告)日：2024-01-25

    申请号：US18196621

    申请日：2023-05-12

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Seigo FUJISHIMA

    IPC: H01M4/82 ,  H01M4/66

    CPC classification number: H01M4/82 ,  H01M4/667 ,  H01M4/661 ,  H01M4/668

    Abstract: A manufacturing method of a power storage device includes: an arrangement step of arranging a first resin member on a first surface of a metal foil and arranging a second resin member on a second surface of the metal foil; and a welding step of arranging a first pressurizing member and a second pressurizing member on a surface on an opposite side of the first resin member and the second resin member, respectively, from a surface on the metal foil side, and irradiating the end portion of the metal foil with an electromagnetic wave from the first pressurizing member side while pressurizing the end portion with the first pressurizing member and the second pressurizing member so as to weld the first resin member and the second resin member to the metal foil such that the end portion of the metal foil is covered.

    Power Storage Cell
    8.
    发明申请
    Power Storage Cell 有权

    公开(公告)号：US20250087864A1

    公开(公告)日：2025-03-13

    申请号：US18829656

    申请日：2024-09-10

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Takeru HARA ,  Masato ONO ,  Satoshi MORIYAMA ,  Hiroki AWANO ,  Kazuya KUMAZAWA ,  Seigo FUJISHIMA ,  Tomohiro INAGAKI

    IPC: H01M50/609 ,  H01M50/103 ,  H01M50/531

    Abstract: A power storage cell includes a case, an electrode assembly, and an electrolyte solution. The case houses the electrode assembly and the electrolyte solution. The case has a first bottom wall, a peripheral wall, and a second bottom wall. The second bottom wall faces the first bottom wall. The peripheral wall connects the first bottom wall and the second bottom wall. The peripheral wall includes a pair of main walls and a pair of side walls. The pair of side walls connect the pair of main walls. Each of the pair of main walls has a larger area than an area of each of the pair of side walls. A groove is formed in a surface of at least one of the pair of side walls in the case. The groove extends in a direction from the first bottom wall toward the second bottom wall.

    CASE AND METHOD OF MANUFACTURING POWER STORAGE CELL
    9.
    发明申请
    CASE AND METHOD OF MANUFACTURING POWER STORAGE CELL 有权

    公开(公告)号：US20250079670A1

    公开(公告)日：2025-03-06

    申请号：US18812425

    申请日：2024-08-22

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Takeru HARA ,  Masato ONO ,  Satoshi MORIYAMA ,  Hiroki AWANO ,  Kazuya KUMAZAWA ,  Seigo FUJISHIMA ,  Tomohiro INAGAKI

    IPC: H01M50/627 ,  H01M50/103

    Abstract: A case is used for accommodating an electrode assembly and an electrolyte solution of a power storage cell. The case has a rectangular parallelepiped outer shape. The case includes a first bottom wall, a peripheral wall, and a second bottom wall. The second bottom wall faces the first bottom wall. The peripheral wall connects the first bottom wall and the second bottom wall. The first bottom wall has a rectangular planar shape. The first bottom wall has a long-side direction and a short-side direction. The long-side direction is parallel to a long side of the first bottom wall. The short-side direction is parallel to a short side of the first bottom wall. The first bottom wall is provided with an injection port. The injection port has an aspect ratio of less than 1.

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