RECTANGULAR SECONDARY BATTERY

摘要

Provided is a rectangular secondary battery with improved rigidity against vibrations and impacts. A rectangular secondary battery (1) of the present invention includes: a flat-shaped electrode group (40); a current-collecting plate (21) electrically connected to the electrode group (40); a battery case (4) accommodating the current-collecting plate (21) and the electrode group (40); a battery cover (3) that closes an opening (4a) of the battery case (4); an electrode terminal (61) penetrating through the battery cover (3), the electrode terminal being connected to the current-collecting plate (21) via a connecting member; and a gasket (66) that is inserted between the electrode terminal (61) and the battery cover (3) for insulating and sealing. An insulator (65) is disposed between the current-collecting plate (21) and the battery cover (3), the battery cover (3) includes a battery cover side fixing part (3b) that fixes the insulator (65), and the insulator (65) includes a current-collecting plate side fixing part (65c) that fixes the current-collecting plate (21).