@syseng68k - #570
You can't use same connection for monitoring and balancing, as the balancing current would introduce substantial measurement errors. Thus, there must be two separate pairs of wires per cell, one for monitoring and one for balancing.
Existing batteries show no indication of per cell temperature monitoring. Per cell temperature monitoring accomplishes nothing as the lag would be seconds.
An infrared camera may be of interest though, as long as it could detect an cell-internal arc withing a millisecond or so. I have no experience with infrared and don't know whether feasible.
IMHO, there will be at most a few milliseconds available to shut charging down after a cell short, to prevent damage to other cells.
Most important is to quickly detect a cell short (via voltage) transients and disable the charger. When in doubt, don't charge!
I read that some of the small standard cells have a disconnect feature on pressure rise. Pressure monitoring may also be of interest?
Last edited by saptzae; 9th Feb 2013 at 09:40.
Reason: one for, could