ELECTRIC STORAGE DEVICE AND METHOD OF MANUFACTURE THEREOF

摘要

In an electric storage device, a terminal plate includes an element-connecting part electrically connected to a first electrode at a first end of an electric storage element, and an external terminal connected to this element-connecting part. A sealing member is on the element-connecting part, and includes a hole where the external terminal is inserted. The sealing member and the external terminal seal an opening of an outer jacket. The external terminal includes a tapered part on its outer periphery at a tip, and is partially exposed from the sealing member. The tapered part includes a first end and a second end farther away from the element-connecting part than the first end. An edge of a side wall at the opening of the outer jacket is between the first and second ends of the tapered part in a first direction extending from the bottom to the opening of the outer jacket.

主权项

1. An electric storage device comprising:
an electric storage element including a first electrode, a second electrode, and a first end from which the first electrode is led out; an electrolyte with which the electric storage element is impregnated; a terminal plate including an element connecting part electrically connected to the first electrode at the first end, and an external terminal connected to the element connecting part; an outer jack including a bottom, and a tubular side wall extending from the bottom and having an opening opposite to the bottom, the outer jacket being formed of a conductive material and housing the electric storage element together with the electrolyte such that the terminal plate is located nearer the opening than the bottom; and a sealing member positioned on the element connecting part and having an insertion hole to which the external terminal is inserted, the sealing member sealing the opening of the outer jacket together with the external terminal, wherein the external terminal is one of columnar and tubular body with a tapered part on an outer periphery at a tip thereof, a part of the external terminal is exposed from the sealing member, and the tapered part has a first end and a second end farther away from the element connecting part than the first end, and an edge of the side wall at the opening of the outer jacket is positioned between the first end and the second end of the tapered part in a first direction extending from the bottom to the opening of the outer jacket.