Patent ID: 7820337
Filing Date: 2010-10-26
Classification: H01M,Y02E,Y10T

Abstract:
1. An electrochemical device comprising: an armor; a structure housed in the armor and having a first electrode, a second electrode, and a separator disposed between the first electrode and the second electrode; and external terminals with respective leads connected to the first electrode and the second electrode of the structure, respectively, and extending from an interior of the armor across a sealed portion of the armor to the outside, each lead having a first principal surface and a second principal surface, opposed to the first principal surface, wherein at an intersection in each of the leads crossing the sealed portion, the first principal surface includes a plurality of grooves formed so as to cross an extending direction of the lead and the second principal surface includes a plurality of projected rims formed so as to cross the extending direction of the lead, each of the projected rims in the second principal surface of the lead is formed at the portion corresponding to each of the grooves in the first principal surface of the lead.