...
| Question | Outcome |
|---|---|
| What are we using for the AFE? | LTC6804 - 12-cell AFE, add a mux to support up to 12 temp sensors? |
| Daisy chained or addressable? | Daisy-chained - addressable would require per-board configuration |
| What architecture are we using? | Single controller board, carrier board reads current and uses LTC6820 isoSPI interface, AFE boards contain AFE, balancers, and thermistor inputs Master battery box contains controller board, slave battery box is connected by isoSPI |
| Active vs. passive balancing | Passive balancing - See follow-up discussion in BMS Architecture Discussion for details |
| How many cells should we balance across? |
No longer relevant? |
| What current sensor are we using? | LEM bidirectional hall effect sensor (looking into DHAB or similar) |
| Will we protect the aux battery? | Rev1 will have the aux protection/charging circuits on a separate board, may look into combining the boards. Note that the aux battery faulting technically counts as a battery fault, but it probably doesn't matter. |