Rechargeable battery

Abstract

A rechargeable battery includes an electrode assembly that performs charging and discharging, a case in which the electrode assembly is installed a cap plate coupled to the case, a lead tab connected to an electrode of the electrode assembly, and an electrode terminal in the cap plate and connected to the lead tab. The electrode terminal includes a column portion inserted into a terminal hole of the cap plate and a flange portion at one end of the column portion, the flange portion being wider than a cross-section of the column portion, and the flange portion being at an inner side of the cap plate. The lead tab includes an insertion portion into which the column portion is inserted, the lead tab being welded in a surface contact manner to the flange portion along an inner surface of an external circumference of the insertion portion.

Dependencies are inferred from the claim text.