| 摘要 |
PROBLEM TO BE SOLVED: To weld a sheet-like current collecting lead, without having to lower the strength of the sheet-like current collecting lead and prevent a laser light from reaching the inside when being welded by a laser light. SOLUTION: While a stripe-like electrode provided with a plurality of the sheet-like current collecting lead 7 in one side is wound spirally like a whirlpool and the sheet-like current collecting lead 7 is interposed between one side of a flat metal plate ring 20 and other side of a metal disk 21 and welded. |
