Power battery top cover

The utility model relates to the technical field of battery top covers, in particular to a power battery top cover which comprises a top cover piece and an electrode column arranged on the top cover piece, a lower plastic part is arranged at the bottom of the top cover piece, an explosion-proof valve lower cavity is arranged in the lower plastic part, and side baffles are arranged on the left side and the right side of the explosion-proof valve lower cavity respectively. At least one side baffle can be folded along the joint of the side baffle and the lower plastic part; one side baffle is arranged to be in a foldable mode, the side baffle is laid down in the earlier stage of welding, the side baffle cannot block in the welding process, workers can conveniently conduct welding, the production efficiency can be improved, meanwhile, due to the fact that no side baffle is used for blocking in the welding process, the welding quality of welding can be improved, and the phenomenon that due to blocking, the welding