Patent ID: 11955592
Assignee: SANYO ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An electricity storage device comprising:
an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate;
an exterior housing that has an opening and houses the electrode assembly;
a lid that covers the opening of the exterior housing and has a liquid injection hole for injecting an electrolytic solution into the exterior housing;
electrode terminals that are electrically connected to the electrode assembly and partially protrude from the lid to the outside of the exterior housing;
a tubular member extending from the lid toward the electrode assembly, the tubular member being disposed between an outer surface of the lid and the electrode assembly so as to surround an opening of the liquid injection hole on a surface of the lid, which surface faces the electrode assembly; and
a covering member that is connected to the tubular member and interposed between the liquid injection hole and the electrode assembly,
wherein the covering member is nearer the electrode assembly than at least a portion of an opening of the tubular member in a direction where the tubular member extends,
wherein the opening of the tubular member is located in an edge of the tubular member which is nearer the electrode assembly than another edge of the tubular member in the direction where the tubular member extends, wherein the edge and the another edge of the tubular member constitute two opposite ends of the tubular member in the direction where the tubular member extends, and
wherein the opening of the tubular member consists of two diametrically opposite through holes each of which opens at least in a lengthwise direction of the lid.