ENERGY STORAGE DEVICE AND ENERGY STORAGE DEVICE PRODUCTION METHOD

摘要

An energy storage device 10 includes: an insulating member (lower insulating member 130) disposed between a terminal (negative electrode terminal 300) or a current collector (negative electrode current collector 150) and a container 100; and a welding target member (negative electrode lead plate 155) disposed at a position where the terminal or the current collector is sandwiched between the welding target member and the insulating member. In the insulating member, a protrusion 136 that protrudes toward the terminal or the current collector is provided at a position facing a welded portion of the welding target member.