Question
BMS Design Architecture
I had like to understand the recommended BMS configuration at the architecture level for both my current and future battery configurations.
1. 2S build
- Cell monitoring
- Passive cell balancing
- Battery protection
- SOC / SOH estimation
- Battery current measurement
- Pack/cell voltage measurement
- Battery charging
- Temperature monitoring
2. 7S build(future scalable)
- Same functional requirements as above
- Preferably using an architecture that can scale from 2S to 7S with minimum changes to the overall system
It would be particularly helpful if you could provide, for each configuration:
- Recommended cell-monitor/BMS IC
- Recommended protection IC
- Recommended charger IC
- Recommended current/voltage measurement approach
- Recommended SOC/SOH approach
- Recommended cell-balancing method and typical balancing current
- Whether you would use internal or external balancing FETs/resistors
- Any additional ICs/components you would normally consider essential
I’m mainly looking for a practical, industry-proven architecture rather than just a list of ICs. It would also be useful to know whether you would recommend one common architecture that can cover both 2S and 7S, or separate optimized configurations for each.
