| 摘要 |
PROBLEM TO BE SOLVED: To provide a method in which short circuit inside the battery is prevented in the manufacturing method of a battery in which a current collector is welded on the welding edge of an electrode. SOLUTION: At the welding of positive electrode collector 60, the welding edge of which the tab portion of the volute electrode is exposed, is disposed to horizontal or downward direction, and the positive electrode collector 60 is placed on top of this welding edge and pressed by the welding electrode. By flowing electricity to the tab portion 12 from the welding electrode pressing as above, and by heating, the tab portion 12 and the positive electrode collector 60 are welded. For the welding of the positive electrode collector 70, the welding is done similarly with the welding edge placed to the horizontal or downward direction. |
