The application discloses installation busbar device belongs to the automatic packing production technical field of lithium cell. This installation busbar device includes that elasticity board, at least a set of elastic sheet group close to and the fixed part, every elastic sheet group of group closes two shell fragments that contain relative setting, wherein: two shell fragments that the elasticsheet group of every group closed alternate the gap that corresponds on the elasticity board, every elastic sheet group of group closes the first end and fixed part fixed connection that is located the first side in gap, and two shell fragments that elastic sheet group closed are laminated from the position between gap to the fixed part each other, and elastic sheet group closes the second end outside separation each other that is located gap second side. This application is moved with the shrink through the opening of second end that elasticity board motion control elastic sheet group closed,realizes automatic the completion and snatchs the busbar and install the work on pole lug of lithium cell with the busbar, has reduced the cost of labor, has improved work efficiency.