| 摘要 |
PURPOSE: A structure of a positive electrode pin for use as an electrolyte solution injection hole of a battery is provided, to reduce the cost and the process time by using no metal ball for sealing an injection hole. CONSTITUTION: The structure comprises a case; a separator plate separating a positive terminal and a negative terminal; a cap-shaped disk(3) formed at the upper part of the case; and a positive pin(13) having a flange part(10) at the center of the disk, which has an electrolyte solution injection hole(13a) for drawing a positive electrode from the inside of the case and injecting an electrolyte solution. The positive pin(13) and the flange part(10) are fixed by the medium of glass metal for sealing. An electrolyte solution is inserted through the positive pin, and the positive pin is welded by resistance welding and TIG welding after the upper part of the positive pin is compressed.
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