SECONDARY BATTERY AND MANUFACTURING METHOD OF SECONDARY BATTERY

摘要

A secondary battery includes a sealing body (25), a rivet member (30), a gasket (27) that contacts the rivet member (30) and is fixed between the sealing body (25) and the rivet member (30), a holder member (60), a reversing plate (40) that deforms when an internal pressure of the exterior body (10) rises, and a heat accumulation portion (70) that contacts the rivet member (30) and has a higher thermal conductivity than the rivet member (30). An outer peripheral edge (42) of the reversing plate (40) is connected by welding to the peripheral edge portion (36) of the rivet member (30), and the heat accumulation portion (70) is sandwiched between the opposing portion (33) of the rivet member (30) and the extending portion (61) of the holder member (60).