METHOD FOR WELDING STRAP AND MANUFACTURE OF LEAD-ACID BATTERY

摘要

PROBLEM TO BE SOLVED: To eliminate the generation of the non-welded space of an interface between a lead part pole and a strap by providing a cutout on the side facing to the lead part pole of an additional lead for forming the strap. SOLUTION: By shaping an additional lead 10 to have a cutout 11 on the side facing to a lead part pole 4, the welded surface of the pole 4 to a strap is exposed and a plasma arc enters into the entire welded surface to enhance welding properties. A comb jig 1 is fit into a homopolar electrode ear part 2 of an electrode plate group 6, a patch metal 3 is placed on a predetermined position and the lead part pole 4 and the additional lead 10 for forming the strap are placed in a predetermined position of the jig 1. The additional lead 10 is provided with the cutout 11 on one part thereof and the cutout 11 is placed on the jig 1 so that the cutout 11 is on the side abut to the lead part pole 4. Since the plasma arc generated from a plasma torch can reach the under part of the pole 4 from the cutout 11, the pole under part is melted sufficiently and a non-welded part is not generated between the strap and the pole 4.