Patent ID: 7303836
Filing Date: 2007-12-04
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A cap assembly comprising: a cap plate having a port aperture; an electrode port, including a head and an insertion whose diameter steadily increases from the head to an end thereof, the insertion being inserted into the port aperture with a predetermined distance maintained between the head and the cap plate, wherein the diameter of the head of the electrode part is greater than the upper diameter of the insertion of the electrode part; an insulating member formed to extend from, at least, a lower surface of the cap plate to a lower portion of the head of the electrode port to insulate the cap plate and the electrode port and to bind the electrode port to the cap plate; and an auxiliary binding unit on a surface of the cap plate, wherein the auxiliary binding unit provides additional binding of the insulating member to the cap plate, wherein the auxiliary binding unit provides additional binding of the insulating member to the cap plate, wherein the auxiliary binding unit comprises at least one groove formed on the surface of the cap plate, and a portion of the insulating member protrudes into the at least one groove, wherein the insulating member, the cap plate, and the electrode port form a single integrated body.