The main control BCU is the battery cluster management layer, which manages multiple packs of batteries in series. It mainly collects various single battery information uploaded from the control BMU and collects battery pack information. It calculates and analyzes the SOC and SOH of the battery pack, collects total voltage, total current and insulation monitoring, controls high-voltage relays, and has RS485 and CAN interfaces for communication and interaction with external PCS equipment.
It uses 32-bit high-speed ARM, supports 1500V high voltage, manages up to 27 packs of air-cooled 16S battery packs, 8 clusters of batteries, with high-voltage insulation detection and adhesion detection, accurate SOX estimation, intelligent balancing and thermal management, 3 independent CAN interfaces, multi-level software protection and alarm functions, supports cloud platform and OTA firmware upgrades, and meets the new national standard GBT34131-2023 for energy storage BMS.
Operating voltage range
DC9V-36V
Mutual call function
Support BCU wake up BAU; BAU wake up BCU; BCU wake up BMU; PCS wake up BAU
Operating current
≤ 70mA(24V)
Power reverse connection protection
Support
CAN communication
3 channels
Power surge protection
Support
RS485 communication
2 channels
Withstand voltage
AC 3100V
RS232 communication
2 channels
Operating temperature
-20~65℃
Software upgrade
Support CAN bus upgrade
Storage temperature
-40~125℃
Support relay
6-way low-side control
Implementation standard
GB/T 34131-2023
Support relay
2-way high-side control
EMC
GB/T-18655;IS011452;ISO 7637;ISO 10605;ISO16750
Address line
3-way address line
Protection level
IP43, not waterproof
Wake-up input
Key wake-up input
Humidity
5%~95%℃, no condensation
High voltage interlock
Support interlock input, interlock output
Altitude
≤ 2000m
Emergency stop detection
Support
Appearance size
245*115*29.7mm
Insulation detection
Support