BCU-B3 (BMS Master Controller)
High-voltage BMS master controller for industrial and utility-scale energy storage systems, featuring proprietary SOC/SOH algorithms, multi-protocol communication, comprehensive I/O, and integrated pre-charge and contactor control.
.png&w=3840&q=75)
The BCU-B3 is a high-voltage BMS master controller designed for industrial and utility-scale energy storage systems. It integrates precise battery status estimation (SOC/SOH/SOP), intelligent system strategy, comprehensive communication interfaces (2× CAN, 2× RS485, daisy-chain), flexible switch I/O, alarm and protection functions, pre-charge and contactor control, total voltage and insulation sampling, and high-accuracy current acquisition. With 16kV ESD protection, a wide operating temperature range, and full customization support, the BCU-B3 delivers reliable performance for commercial, grid-scale, and second-life battery applications.
Performance Metrics
Real-time SOC, SOH, and SOP estimation using proprietary physics-based models for LFP, NMC, LTO, and more
Verified under maximum operational load and extreme environmental conditions.
Intelligent charge/discharge management, thermal control, and adaptive balancing strategies
Verified under maximum operational load and extreme environmental conditions.
2× isolated CAN, 2× isolated RS485, and daisy-chain ports for seamless PCS, EMS, and BMU integration
Verified under maximum operational load and extreme environmental conditions.
6× GPIO (100k pull-up), 6× high-side outputs (1A / 3A peak), and 2× low-side outputs for flexible control
Verified under maximum operational load and extreme environmental conditions.
Over-voltage, under-voltage, over-temperature, short-circuit, and insulation fault alarms with fail-safe response
Verified under maximum operational load and extreme environmental conditions.
Integrated pre-charge and main positive contactor drivers with diagnostic feedback
Verified under maximum operational load and extreme environmental conditions.
0–1500V total voltage measurement (±0.5% FS) and 20MΩ insulation resistance monitoring
Verified under maximum operational load and extreme environmental conditions.
±75mV shunt input with ±0.5% FS accuracy for precise coulomb counting and state-of-charge tracking
Verified under maximum operational load and extreme environmental conditions.
16kV ESD protection, wide -25°C to +85°C operating temperature, and CE/RoHS/FCC certification
Verified under maximum operational load and extreme environmental conditions.
Full firmware, hardware, and connector customization available
Verified under maximum operational load and extreme environmental conditions.