Other Parts Discussed in Thread: BQ34Z100
Hello,
We've been using the BQ34z100 for a while now as a system side pack gauge for a while now and are trying to create a golden image using the battery studio tool on our real application. The gauging/calibration seems to work fine in the field (Qmax guess, voltage, current etc without IT enabled) however the impedance track algorithm needs to be updated. During the new calibration I'm running into issues getting the update status/MaxError to change after several cycle attempts.
Specs:
- LiFePo4 A123 ANR26650M1-B 16 series, 4 parallel, ~1000Wh/20Ah
- 28A charge/4A discharge
I've attached a calibration cycle attempt and the used register values. It would be nice if I could get suggestions what's going wrong in the attempt and if any registers require updating.
In the attempt I did the following:
- Load registers (attached)
- Enable IT
- Charge pack to full (with CC 1C + 5Hrs CV)
- Relax Pack (~2Hrs)
- Discharge pack (0.24C ~4Hrs)
- Relax pack (~7Hrs)
Thanks in advance!