Rivet-type battery cover

The present application relates to the technical field of battery cover assembly, and discloses a rivet-type battery cover. The rivet-type battery cover comprises a post terminal, as well as a rivet block, an upper plastic member, a top cover and a lower plastic member which are stacked in sequence. A first stepped hole and a second stepped hole are coaxially distributed on the rivet block. The stamping end of the post terminal penetrates the lower plastic member, the top cover, the upper plastic member, the first stepped hole and the second stepped hole in succession. The stamping end of the post terminal is convexly arranged at a portion of the first stepped hole and stamped to form a protrusion. The protrusion is located in the second stepped hole.

Battery rupture plate structure and preparation method therefor, battery cover plate, and battery

Traction battery cover and traction battery

The present application relates to the technical field of traction batteries. Disclosed are a traction battery cover and a traction battery. The traction battery cover comprises a copper-aluminum composite post, a top cover sheet, a sealing member, an upper injection-molded member and a lower injection-molded member, wherein the copper-aluminum composite post is arranged penetrating the top cover sheet, the upper injection-molded member and the lower injection-molded member; the copper-aluminum composite post comprises a copper matrix part and an aluminum matrix part, which are connected to each other; a composite connecting surface is formed between the copper matrix part and the aluminum matrix part; and the composite connecting surface is sealed and coated by the sealing member.

Battery rupture plate structure and preparation method therefor, battery cover plate, and battery

A preparation method for a battery rupture plate structure, the rupture plate structure comprising a rupture plate. Said method comprises: providing, at a first depth, a first score with no intersection on a surface of the rupture plate; and providing a second score having a second depth on a part of the first score in the direction of the first depth.