Abstract: The invention broadly provides improved safety features for batteries utilized in electronic devices. The invention provides an improved CID design that allows for more reliable disconnection (breaking the electrical circuit) during abnormal pressure or temperature events inside the cell. The invention provides a multi-layered CID configured to force electric current through a thin, fragile element such that the thin, fragile element is broken upon any abnormal pressure and temperature event.
Type:
Grant
Filed:
March 30, 2009
Date of Patent:
September 18, 2012
Assignee:
Lenovo (Singapore) Pte. Ltd.
Inventors:
Bouziane Yebka, Joseph A. Holung, Tin-Lup Wong