Abstract: For the welding of battery shell and nickel sheet in the collector pieces,the semiautomatic welding equipment was designed. The equipment consisted of battery feeding mechanism,nickel feeding mechanism,welding mechanism and laying-off mechanism,which realizes the automatic feeding of single material,automatic positioning,welding,and laying-off. This equipment used automatic rotary workstation,battery feeding,nickel strip cropping and feeding,welding,laying-off product worked at the same time,increase the production efficiency. After the simulated production test,the equipment only needs 2 s to complete one product with one worker,and saves four human cost.