Hello,
We are looking at using the bq34z100 fuel gauge in a high-capacity 16s design. I have some basic questions to clarify some issues with regards to configuring the flash, and working with the evaluation board.
Is it possible to modify the evaluation board to work with a 64V battery?
The capacity of the battery is 30Ah. For a nominal 50V this makes the design energy 1,500,000 mWh. I need some clarification on the x10 mode and the design energy scale factor. The battery will be operated in CC mode.
If we select x10 mode, then is it true that EVERY setting in the flash for which the units are mAh should be scaled by a factor of 10? And in conjunction with doing that, the current calibration should be "fooled" by, say, entering 200mA when a 2A load is applied for the current calibration?
Then, if the design energy scale factor is set to 10, does that mean that the design energy is really scaled by 100 because current is already scaled by 10? Since the value for the register can be any number between 0-255, can I use a larger energy scale factor if necessary? Otherwise, I cannot enter a value large enough for our design. And does all of that really matter if we are using a constant-current load model?
Thanks,
Joe Perino
Nova Battery Systems