A battery includes a cell casing; a first terminal; a second terminal in electrical communication with the cell casing and electrically insulated from the first terminal; an electrode assembly in the cell casing; a current interrupt device (CID) in electrical communication with the first terminal and the first electrode or with the second terminal and the second electrode; and insulation that interrupts potential electrochemical communication between the first electrode and the second terminal or between the second electrode and the first terminal. The electrode assembly includes a first electrode in electrical communication with the first terminal, a second electrode in electrical communication with the second terminal, and an electrolyte between the first and second electrodes. The insulation interrupts potential electrochemical communication between the first electrode and the second terminal or between the second electrode and the first terminal when under a charging or overcharging condition and when the CID is activated, thereby interrupting the electrical communication between the first terminal and the first electrode or between the second terminal and the second electrode.

Title
Battery with enhanced safety
Application Number
12/386270
Publication Number
20090291330
Application Date
April 15, 2009
Publication Date
November 26, 2009
Inventor
Richard V Chamberlain II
Fairfax Station
VA, US
Yanning Song
Chelmsford
MA, US
Per Onnerud
Framingham
MA, US
Agent
Hamilton Brook Smith & Reynolds PC
MA, US
Assignee
Boston Power
MA, US
IPC
H02J 07/00
H01M 04/82
H02H 07/18
View Original Source