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公开(公告)号：US20210091415A1
公开(公告)日：2021-03-25
申请号：US17111750
申请日：2020-12-04
Applicant: FDK CORPORATION
Inventor： Takahiro ENDO , Yuki NATSUME , Takeo NOGAMI , Hidenori TSUZUKI
Abstract: An alkaline battery is made by press-fitting a plurality of tubular positive electrode pellets inside of an open end of a cylindrical positive electrode can. The press-fitting is performed in such a manner as to stack the positive electrode pellets coaxially inside of and in contact with the positive electrode can, with gaps between adjacent positive electrode pellets. A separator is disposed inside of the tubular pellets, and a negative electrode mixture is placed inside of the separator. A negative electrode current collector is inserted into the negative electrode mixture, and the opening at the open end of the positive electrode can is sealed with a negative electrode terminal plate.
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公开(公告)号：US20250105368A1
公开(公告)日：2025-03-27
申请号：US18731000
申请日：2023-02-03
Applicant: FDK CORPORATION
Inventor： Satoshi MURASE , Soma SUZUKI , Tomomichi YAMAGUCHI , Takeshi ITO , Takahiro ENDO
IPC: H01M10/28 , H01M4/02 , H01M4/24 , H01M4/36 , H01M4/38 , H01M4/48 , H01M4/66 , H01M50/107 , H01M50/119 , H01M50/128 , H01M50/179 , H01M50/188 , H01M50/528 , H01M50/533
Abstract: A battery includes an exterior can, an electrode group housed together with an alkaline electrolyte in the exterior can, and a sealing member that seals the exterior can. The electrode group is formed by winding a positive electrode and a negative electrode stacked together with a separator interposed therebetween into a spiral shape and has a columnar overall shape. A protruding negative electrode edge portion that is a partially protruding portion of the negative electrode is located at a lower end surface portion of the electrode group, and the protruding negative electrode edge portion is in direct contact with the inner surface of a bottom wall of the exterior can.
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