关键词: 新能源汽车；铝壳体；铝弧焊；电池壳；起弧失效

Abstract: Due to the easy oxidation of aluminum profiles in the air and the melting point of the oxide layer is very high, the weldability defects of aluminum profiles lead to many difficult problems in the arc welding process of thick plate aluminum profiles, such as bubbles, splashes and arc failures. This paper introduces the arc welding problem encounter in the new energy vehicles field of aluminum battery shell arc welding process, comprehensive analysis of the factors that contribute to the failure of arc welding of aluminium profiles, such as grounding, wire feed system, welding parameters, etc., and the process of solving the problem are summarised.The optimization measures proposed in this paper have a good guiding significance to solve the problem of aluminum arc welding in aluminum arc welding process.

Key words: New energy vehicles; Aluminum shell; Aluminum arc welding; Battery shell; Arc start failure