Secondary battery

Abstract

A secondary battery, includes a case having an accommodation part and a cap part, an electrode assembly having a current collector in the accommodation part, an electrode tab in the accommodation part, the electrode tab being connected to the electrode assembly, a lead connected to the electrode tab, and a heat dissipation layer on the electrode tab, the electrode tab including at least two bending regions and a non-bending region, the heat dissipation layer on the at least two bending regions and the non-bending region, and a width of the electrode tab is 25% to 45% of a width of a current collector of the electrode assembly.

Dependencies are inferred from the claim text.