Patent ID: 6063518
Filing Date: 2000-05-16
Classification: H01M,Y02E

Abstract:
A sealed electrochemical cell (1) fitted with a circuit-breaking terminal (3) which ensures electrical connection between an external contact part (7) of said terminal and one (6) of the positive or negative electrodes of the cell, said external contact part (7) of the terminal being electrically connected to a wall (11) which ensures that the terminal is sealed and which is capable of being deformed under the action of an increase in internal pressure, said wall (11) being connected to said electrode (6) by means which ensure electrical continuity, said continuity being interrupted when an internal pressure P is reached which is greater than a determined value P.sub.1, causing said wall to deform and the connection between the wall (11) and a break part (13) to break, the cell being characterized in that said circuit-breaking terminal (3) passes in sealed manner through a closure lid (2) of the cell, said lid also being fitted separately with a safety capsule (4) which breaks under a pressure P.sub.2 >P.sub.1.