| 摘要 |
<p>A method of manufacturing a rectangular battery comprising abutting a sealing plate (2) against an upper open end of a square case (1) containing an electricity producing element, and scanning an abutting line (4) with laser beams (3a-3d) parallel to the straight line of each side (a, b, c, d) of the abutting line (4) to laser-weld the sides (a-d) including the corners (e) and thereby hermetically seal the rectangular case (1).</p> |
