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    Secondary cell and battery pack
    3.
    发明授权
    Secondary cell and battery pack 有权

    公开(公告)号：US11424517B2

    公开(公告)日：2022-08-23

    申请号：US16705447

    申请日：2019-12-06

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Yohei Muroya ,  Hiroshi Takabayashi

    IPC: H01M50/543 ,  H01M50/20 ,  H01M50/502 ,  H01M50/528

    Abstract: A negative electrode terminal includes a flange, and a connection portion disposed on a first surface of the flange. The connection portion is inserted into a terminal attachment hole. The negative electrode terminal includes a first area made of aluminium or an aluminium alloy, and a second area made of copper or a copper alloy. In the flange, the second area is disposed adjacent to the first surface, and the first area is disposed adjacent to the second surface. A boundary between the first area and the second area is disposed between the first surface and the second surface. A thinnest portion of the first area of the flange in the thickness direction of the flange has a thickness of larger than or equal to 0.3 mm. An external electroconductive member made of aluminium or an aluminium alloy is welded to the flange to form a welded portion.

    SECONDARY BATTERY AND BATTERY PACK INCLUDING THE SAME
    4.
    发明申请
    SECONDARY BATTERY AND BATTERY PACK INCLUDING THE SAME 有权

    公开(公告)号：US20210242484A1

    公开(公告)日：2021-08-05

    申请号：US17236314

    申请日：2021-04-21

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Ryoichi Wakimoto ,  Yohei Muroya ,  Hiroyuki Yamada

    IPC: H01M10/04 ,  H01M10/0525 ,  H01M50/20 ,  H01M50/502 ,  H01M50/578

    Abstract: Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

    Secondary battery, method for manufacturing same, and battery pack employing same
    5.
    发明授权
    Secondary battery, method for manufacturing same, and battery pack employing same 有权

    公开(公告)号：US10424809B2

    公开(公告)日：2019-09-24

    申请号：US15637076

    申请日：2017-06-29

    Applicant: Sanyo Electric Co., Ltd.

    Inventor： Shinichirou Yoshida ,  Yohei Muroya ,  Hiroshi Maesono ,  Hiroyuki Inoue

    IPC: H01M10/05 ,  H01M2/02 ,  H01M2/08 ,  H01M2/26 ,  H01M4/04 ,  B60L50/64 ,  H01M4/13 ,  H01M10/052

    Abstract: A secondary battery including an electrode body that includes a positive electrode plate and a negative electrode plate, an outer body that houses the electrode body, a metal sealing plate that seals an opening of the outer body, a positive electrode collector electrically connected to the positive electrode plate and the sealing plate, a negative electrode external terminal connected to the negative electrode plate through a negative electrode collector. In the secondary battery, a first projection and a second projection are formed on a surface of the sealing plate on a battery inner side, the positive electrode collector includes a first opening and a cut-out, the first projection is disposed in the first opening, the first projection and an edge portion of the first opening is welded and connected to each other, and the second projection is disposed in the cut-out.

    SQUARE SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME
    6.
    发明申请
    SQUARE SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME 审中-公开

    公开(公告)号：US20180175335A1

    公开(公告)日：2018-06-21

    申请号：US15814749

    申请日：2017-11-16

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Yohei Muroya ,  Shinichirou Yoshida ,  Hiroshi Maesono

    IPC: H01M2/04 ,  H01M2/02

    CPC classification number: H01M2/0408 ,  H01M2/021 ,  H01M2/0217 ,  H01M2/0426 ,  H01M2/26 ,  H01M2220/20

    Abstract: A square secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate, a square outer package housing the electrode body, a metal sealing plate sealing an opening of the square outer package, and a positive electrode collector electrically coupled to the positive electrode plate and the sealing plate. The positive electrode collector includes a base portion disposed so as to oppose the sealing plate, and a lead portion provided at an edge portion of the base portion. A projection is provided on the sealing plate. The projection is fitted into a connection opening provided in the base portion to connect the projection and the base portion to each other. An edge portion of the connection opening provided in the base portion includes, on a lead portion side, a straight portion that extends in a longitudinal direction of the sealing plate.

    Square secondary battery and method of manufacturing same
    8.
    发明授权
    Square secondary battery and method of manufacturing same 有权

    公开(公告)号：US11081752B2

    公开(公告)日：2021-08-03

    申请号：US15814742

    申请日：2017-11-16

    Applicant: SANYO ELECTRIC CO., LTD.

    Inventor： Yohei Muroya ,  Shinichirou Yoshida ,  Hiroshi Maesono

    IPC: H01M2/04 ,  H01M2/02 ,  H01M50/166 ,  H01M50/543

    Abstract: A square secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate, a square outer package housing the electrode body, a metal sealing plate sealing an opening of the square outer package, and a positive electrode collector electrically connected to the positive electrode plate and the sealing plate. The positive electrode collector includes a base portion disposed to oppose the sealing plate, and a lead portion extending from an edge portion of the base portion towards the electrode body. In a short direction of the sealing plate, a boundary between the base portion and the lead portion is positioned on a first side with respect to a center of the sealing plate, and a connection between the sealing plate and the base portion of the positive electrode collector is offset to a second side with respect to the center of the sealing plate.

    Prismatic secondary battery, and assembled battery and vehicle including the same
    10.
    发明授权
    Prismatic secondary battery, and assembled battery and vehicle including the same 有权

    公开(公告)号：US10964923B2

    公开(公告)日：2021-03-30

    申请号：US15991094

    申请日：2018-05-29

    Applicant: SANYO ELECTRIC CO., LTD.

    Inventor： Yohei Muroya ,  Kazuki Takeno ,  Mitsuhiro Okada

    IPC: H01M2/02 ,  H01M2/30 ,  H01M2/06 ,  H01M2/04 ,  H01M2/12 ,  H01M10/05 ,  H01M4/505 ,  H01M4/525 ,  H01M4/133 ,  H01M4/66 ,  H01M4/38 ,  H01M2/22 ,  H01M2/10 ,  H01M4/02

    Abstract: A prismatic secondary battery includes an electrode body including a positive-electrode sheet and a negative-electrode sheet, a prismatic exterior body that accommodates the electrode body, a sealing plate that seals an opening of the prismatic exterior body, and a negative terminal electrically connected to the negative-electrode sheet. The prismatic secondary battery is arranged such that the sealing plate extends in the vertical direction during use of the prismatic secondary battery. The positive-electrode sheet is electrically connected to the sealing plate. The sealing plate has a recessed portion on an outer surface and a terminal insertion hole formed in the recessed portion. The negative terminal is inserted in the terminal insertion hole. An outer insulating member is disposed between the negative terminal and the sealing plate. The sealing plate has a first groove extending to an end of the recessed portion in the longitudinal direction of the sealing plate.

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