Secondary battery, battery pack and electronic apparatus

Abstract

A secondary battery, battery pack, and an electronic apparatus are provided. The secondary battery includes an electrode assembly, a casing, an electrode post, a sealing rivet, and a welding mark. The electrode assembly is accommodated in the casing, and one end of the casing has an opening portion. An end portion of the electrode post away from the electrode assembly protrudes from the casing through the opening portion, and the end portion of the electrode post is provided with a groove. The sealing rivet is matched and embedded in the groove. The sealing rivet is welded and fixed to the electrode post through the welding mark located on a connection portion of an end surface of an outer periphery of the sealing rivet and an end surface of the end portion of the electrode post.

Dependencies are inferred from the claim text.