Battery cover plate

Abstract

A battery cover plate comprising:a cover plate body (10) comprising a first portion (11), a second portion (12) and an explosion-proof structure (20), wherein the cover plate body (10) is formed as one piece and the explosion-proof structure (20) is disposed between the first portion (11) and the second portion (12), characterized in that the thickness of the explosion-proof structure (20) along a direction perpendicular to the flat plate surface of the cover plate body (10) is smaller than the thickness of the first portion (11) and the second portion (12), and the first portion (11) comprises a first surface portion (111) and the second portion (12) comprises a second surface portion (121), wherein the first surface portion (111) and the second surface portion (121) form part of the upper surface of the cover plate body (10), and the first The first surface section (111) and the second surface section (121) are offset from each other by a predetermined distance along the axial direction of the cover plate body (10).