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    Electrochemical cell
    1.
    发明授权
    Electrochemical cell 有权

    公开(公告)号：US11791513B2

    公开(公告)日：2023-10-17

    申请号：US17469081

    申请日：2021-09-08

    Applicant: Seiko Instruments Inc.

    Inventor： Ken Miura

    IPC: H01M50/183 ,  H01M50/184 ,  H01M50/171

    CPC classification number: H01M50/184 ,  H01M50/171

    Abstract: A battery includes a negative electrode can that is formed into a topped cylindrical shape. A negative electrode can circumferential wall portion includes a double cylinder portion that extends from an opening edge of the negative electrode can toward a top portion, and a step portion that connects the top portion to the double cylinder portion. The step portion includes a first curved portion that extends to a lower side from an outer circumferential edge of the top portion, a second curved portion that extends to an outer side of a radial direction from the first curved portion, and a third curved portion that extends to the lower side from the second curved portion. The double cylinder portion includes an inner cylinder portion that extends to the lower side from the third curved portion, and an outer cylinder portion that surrounds the inner cylinder portion from the outer side of the radial direction. A gasket is arranged on an outer side of the outer cylinder portion in the radial direction and on an upper side. An upper end edge of the outer cylinder portion is positioned further on the upper side than a center between both ends of the negative electrode can in an axial direction and is positioned further on the lower side than an upper end edge of the third curved portion.

    Nonaqueous electrolyte secondary battery
    3.
    发明授权
    Nonaqueous electrolyte secondary battery 有权
    非水电解质二次电池

    公开(公告)号：US09368763B2

    公开(公告)日：2016-06-14

    申请号：US14599231

    申请日：2015-01-16

    Applicant: Seiko Instruments Inc.

    Inventor： Ken Miura ,  Takumi Sawayama ,  Tadahito Suzuki ,  Akira Mitsuzuka ,  Tomomi Kobayashi

    IPC: H01M2/08 ,  H01M2/02 ,  H01M2/04 ,  H01M4/485 ,  H01M4/50 ,  H01M10/0569 ,  H01M2/16 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/42

    CPC classification number: H01M2/0222 ,  H01M2/0413 ,  H01M2/08 ,  H01M2/1613 ,  H01M4/131 ,  H01M4/485 ,  H01M4/502 ,  H01M4/505 ,  H01M10/0427 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2010/4292 ,  H01M2220/30 ,  H01M2300/004 ,  Y02E60/122

    Abstract: Provided is a nonaqueous electrolyte secondary battery including a bottomed cylindrical positive electrode casing and a negative electrode casing which is fixed to an opening of the positive electrode casing through a gasket. The opening of the positive electrode casing is caulked to the negative electrode casing side to seal the accommodation space. A shortest distance L1 between a caulking tip end and the negative electrode casing in the opening of the positive electrode casing is equal to or less than 70% of an average sheet thickness of the positive electrode casing, a shortest distance L2 between a tip end of the negative electrode casing and the positive electrode casing is equal to or less than 60% of the average sheet thickness of the positive electrode casing, and a distance L3 between the tip end of the negative electrode casing and the bottom of the positive electrode casing is equal to or less than 110% of the average sheet thickness of the positive electrode casing.

    Abstract translation: 提供一种非水电解质二次电池，其包括通过垫圈固定到正电极壳体的开口的有底圆柱形正极壳体和负极壳体。 将正极壳体的开口填充到负极壳体侧以密封容纳空间。 正极壳体的开口部中的铆接末端和负极壳体之间的最短距离L1等于或小于正极壳体的平均片材厚度的70％，最小距离L2在正极壳体的顶端之间的最短距离L2 负极壳体和正极壳体的长度等于或小于正极壳体的平均片材厚度的60％，负极壳体的前端与正极壳体的底部之间的距离L3为 等于或小于正极壳体的平均片材厚度的110％。

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