Hardware BMS (PCM) relies on analog circuits for safety protection. Simple structure, nearly zero software failure risk, easier certification. Drawback: No real-time battery data; parameters are locked after production.
Bluetooth smart BMS integrates MCU and Bluetooth, with hardware protection retained as safety backup. It supports cell status reading and fault tracking via mobile phone, speeding up R&D and adding product value. Drawback: Higher BOM cost and EMC risk from wireless communication.
Suggestions for foreign trade projects:
1. Tight budget, mass order, special equipment → Hardware BMS
2. Home energy storage, portable power stations with SOC monitoring requirement → Bluetooth Smart BMS
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