Patent ID: 9159976
Filing Date: 2015-10-13
Classification: H01M,Y02E

Abstract:
1. A sealed secondary cell comprising: a container comprising: wherein the container comprises: an electrically conducting flexible connection part comprising in which, in the presence of an excess pressure leading to rupturing of said weakened portion, the electrically conducting flexible connection part directly guides the closure member portion to a position after rupture which is substantially parallel to the position thereof prior to rupture, and the electrode plate group inside the container in abutment with the insulating ring member, in which rupturing of the weakened portion breaks off electrical conduction, passing via the closure member portion, between the electrode plate group and a corresponding power output terminal, wherein the closure member portion is fixed to said central portion and wherein, upon displacement of the closure member portion from the position thereof prior to rupture to the position after rupture, the closure member portion and the central portion perform a helical movement directed towards the outside of the container.