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    Method for producing secondary battery
    33.
    发明授权
    Method for producing secondary battery 有权

    公开(公告)号：US11539067B2

    公开(公告)日：2022-12-27

    申请号：US16708589

    申请日：2019-12-10

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Yohei Muroya ,  Tomokazu Yamanaka ,  Takuya Yamawaki ,  Ryuhei Kai

    IPC: H01M10/04 ,  H01M4/70 ,  H01M4/04 ,  H01M4/02

    Abstract: A secondary battery production method is provided, with which deformation of a current collector is reduced. The method produces a secondary battery including: an electrode assembly having positive and negative electrode plates; and a positive electrode current collector. The positive electrode plate includes a positive electrode core and a positive electrode active material layer, and the electrode assembly includes a positive electrode core-stacked portion. The method includes: an electrode assembly production step of producing the electrode assembly; and an ultrasonic bonding step of ultrasonically bonding the positive electrode current collector to the positive electrode core-stacked portion. The positive electrode current collector has a thin-walled portion. In the ultrasonic bonding step, the thin-walled portion and the positive electrode core-stacked portion are sandwiched between a horn and an anvil, and the thin-walled portion and the positive electrode core-stacked portion are ultrasonically bonded together.

    METHOD FOR PRODUCING SECONDARY BATTERY
    36.
    发明申请
    METHOD FOR PRODUCING SECONDARY BATTERY 审中-公开

    公开(公告)号：US20200243892A1

    公开(公告)日：2020-07-30

    申请号：US16708589

    申请日：2019-12-10

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Yohei Muroya ,  Tomokazu Yamanaka ,  Takuya Yamawaki ,  Ryuhei Kai

    IPC: H01M10/04 ,  H01M4/04 ,  H01M4/70

    Abstract: A secondary battery production method is provided, with which deformation of a current collector is reduced. The method produces a secondary battery including: an electrode assembly having positive and negative electrode plates; and a positive electrode current collector. The positive electrode plate includes a positive electrode core and a positive electrode active material layer, and the electrode assembly includes a positive electrode core-stacked portion. The method includes: an electrode assembly production step of producing the electrode assembly; and an ultrasonic bonding step of ultrasonically bonding the positive electrode current collector to the positive electrode core-stacked portion. The positive electrode current collector has a thin-walled portion. In the ultrasonic bonding step, the thin-walled portion and the positive electrode core-stacked portion are sandwiched between a horn and an anvil, and the thin-walled portion and the positive electrode core-stacked portion are ultrasonically bonded together.

    SECONDARY BATTERY
    37.
    发明申请
    SECONDARY BATTERY 审中-公开

    公开(公告)号：US20200075923A1

    公开(公告)日：2020-03-05

    申请号：US16549302

    申请日：2019-08-23

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Hiroshi Takabayashi ,  Yohei Muroya

    IPC: H01M2/30 ,  H01M2/08

    Abstract: A negative electrode includes a first region formed of a first material and a second region formed of a second material having a different ionization tendency from the first material. The negative electrode terminal includes a flange that is disposed so as to face the outer surface of a sealing plate. A sealing plate side insulating member is disposed between the flange and the sealing plate. A boundary between the first region and the second region has an exposed part that is exposed to the outside, and the exposed part is positioned at an opposite corner on the periphery of the flange to the sealing plate.

    SECONDARY BATTERY AND BATTERY PACK INCLUDING THE SAME
    38.
    发明申请
    SECONDARY BATTERY AND BATTERY PACK INCLUDING THE SAME 审中-公开

    公开(公告)号：US20190189998A1

    公开(公告)日：2019-06-20

    申请号：US16217774

    申请日：2018-12-12

    Applicant: SANYO Electric Co., Ltd. ,  Panasonic Corporation

    Inventor： Yohei Muroya ,  Ryoichi Wakimoto ,  Hiroyuki Inoue ,  Keisuke Shimizu

    IPC: H01M2/34

    CPC classification number: H01M2/345 ,  H01M10/0525

    Abstract: A secondary battery includes an electrode body that includes a positive electrode plate and a negative electrode plate an outer body that houses the electrode body; a sealing plate that is made of metal and seals an opening of the outer body; and a positive electrode terminal that is electrically connected to the positive electrode plate. At least part of the positive electrode terminal is disposed on the battery outer side with respect to the sealing plate. An external insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. The conduction path between the positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. An electrically insulating, heat resistant layer is disposed between the positive electrode terminal and the sealing plate.

    Prismatic secondary battery
    39.
    发明授权
    Prismatic secondary battery 有权

    公开(公告)号：US09653722B2

    公开(公告)日：2017-05-16

    申请号：US14192338

    申请日：2014-02-27

    Applicant: SANYO Electric Co., Ltd.

    Inventor： Masakazu Yamada ,  Takayuki Hattori ,  Yohei Muroya ,  Yasuhiro Yamauchi

    IPC: H01M2/04 ,  H01M2/30 ,  H01M10/04 ,  H01M2/06 ,  H01M2/02

    CPC classification number: H01M2/305 ,  H01M2/0217 ,  H01M2/06 ,  H01M10/0431 ,  H01M2220/20

    Abstract: There is provided a prismatic secondary battery having high reliability and including a connecting part, wherein a terminal member and an external conduction member are connected by a swaged part and a welded part. The terminal member includes a flange, a first connecting part formed on a first surface side of the flange, and a second connecting part formed on a second surface side of the flange. The flange and the second connecting part are disposed on a battery exterior side than a sealing body. The first connecting part penetrates a through-hole formed in the sealing body. The second connecting part penetrates a through-hole formed in an external conduction member. The second connecting part includes a tip part swaged on the external conduction member. An abutting part of a tip of the swaged part of the second connecting part and a protruding part of the external conduction member is weld-connected.

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