Electric storage device

摘要

An electric storage device includes an outer covering, an external terminal having an exposed face exposed outside from the outer covering, a current collector disposed inside the outer covering and connected to the external terminal, and an electrode assembly disposed inside the outer covering and connected to the current collector. The outer covering has a plurality of protrusions protruding outward. The device further includes gasket which has a main body disposed between the external terminal and the outer covering and a plurality of projecting portions respectively extending from the main body and having insertion holes through which the respective protrusions of the outer covering are inserted. The respective protrusions are joined to the outer covering by swaging after respectively inserted through the insertion holes in the respective projecting portions.

主权项

1. An electric storage device, comprising:
an outer covering; an external terminal that includes a plate-like body including an upper face exposed outside from the outer covering and a shaft section projected from a lower face of the plate-like body; a current collector disposed inside the outer covering and connected to the external terminal; and an electrode assembly disposed inside the outer covering and connected to the current collector, wherein the outer covering includes a plurality of protrusions protruding outward, wherein the device further includes a gasket which includes a main body disposed between the plate-like body and the outer covering and a plurality of projecting portions, the projecting portions extending from the main body and including insertion holes through which respective protrusions of the outer covering are inserted, wherein the respective protrusions are swaged after respectively inserted through the insertion holes in the respective projecting portions, wherein the projecting portions comprise tongue-shaped portions extending from a vicinity of a lower end of a side wall of the main body along the outer covering, and wherein, in a plan view, a width of the tongue-shaped portions is narrower than a width of the side wall.