Patent ID: 6610444
Filing Date: 2003-08-26
Classification: H01M,Y02E

Abstract:
A secondary cell comprising an electrode unit (2) enclosed in a cell can (1) and serving as a cell element and adapted to deliver electric power generated by the electrode unit (2) to the outside via a pair of electrode terminal portions, the secondary cell wherein at least one of the electrode terminal portions is provided by an electrode terminal assembly (4) attached to the cell can (1), the electrode terminal assembly (4) comprising:an electrode terminal member (5) extending through a center hole (19) formed in the cell can (1) and having a flange (51) projecting into the cell can (1) and a screw shank (52) projecting outward from the cell can (1), an insulating seal member (6) provided in the center hole (19) of the cell can (1) around the screw shank (52) of the electrode terminal member (5) for providing electrical insulation and a seal between the cell can (1) and the electrode terminal member (5), and a nut (7) screwed on the screw shank (52) of the electrode terminal member (5) from outside the cell can (1), the insulating seal member (6) being in engagement with the cell can (1) and the flange (51) of the electrode terminal member (5) and nonrotatable relative to the cell can and the flange.