| 摘要 |
PROBLEM TO BE SOLVED: To provide a resistance welding method in which an Al material is directly welded by other metallic material, and also to provide a thin battery pack to which this method is applied. SOLUTION: On a welding base 10 made of a high resistance material, there are superimposed a foil-like Al material 11 and a foil-like metallic material 12 composed of a metal other than Al in this order. With a pair of welding electrodes 13A, 13B arranged on the metallic material 12, while pressurizing the metallic material 12, the welding electrodes 13A, 13B are energized, thus welding the metallic material 12 and the Al material 11 to each other in this resistance welding method. |
