Method for stamping and integrally molding top cover sheet, battery top cover structure and manufacturing method thereof

A method for stamping and integrally molding a top cover sheet, comprising the following steps:

• step S11:
• stamping a top cover sheet to mold a first through hole arranged in a penetrating manner and counterbores arranged around the first through hole in a non-penetrating manner;
• step S12:
• stamping the top cover sheet from bottom to top to mold a cylindrical convex hull, and locating the first through hole on a top surface of the convex hull and the counterbores on a side wall of the convex hull;
• step S13:
• stamping the convex hull from top to bottom to mold the convex hull into a convex hull bottom and a convex hull wall convexly provided around the convex hull bottom, and form the counterbores into an undercut groove on an outer side wall of the convex hull wall;
• and
• step S14:
• performing primary shaping on the convex hull wall to mold the convex hull wall into a convex hull connecting portion and a convex hull ring with the convex hull ring connected to the convex hull connecting portion and bent inward;
• and molding the convex hull bottom and the first through hole into a terminal positioning stage and a terminal hole respectively.