1 results about "Post injection" patented technology

The utility model provides a secondary battery cover plate and belongs to the technical field of secondary batteries. Comprising a cover plate body, penetrating grooves are formed in the two ends of the cover plate body, pole columns are arranged in the grooves, sealing rings are arranged at the contact positions of the lower portions of the pole columns and the grooves, the upper portions of the pole columns are sleeved with fixing rings, the fixing rings and the cover plate body are welded and combined in a flush mode, through holes are formed in the fixing rings, and pole column injection molding plates are arranged on the fixing rings. And the diameter of the pole injection molding plate is greater than that of the groove. According to the utility model, the sealing stability of the sealing ring and the safety stability of the secondary battery are improved.