After cell failure, 45A went into the battery for 3 seconds and triggered remainder of the mess.
Timely disconnection is key after a cell failure. Within 10-20 milliseconds that is. Faster would be better, it could avoid discarding other cells.
Detection of cell voltage or battery current transients is the only way to detect cell failure fast enough.
Cell temperature rises way too slow and can not contribute to detection of cell failure at all, it is simply too late then.
Last edited by saptzae; 8th Mar 2013 at 15:16.
Reason: Clarify