Description
JK MASTER BMS (BCU 200A) – JK 1000V HIGH VOLTAGE – Model: BBBA
The JK Master BMS (BCU 200A) is a high-performance, industrial-grade Battery Control Unit designed for high-voltage lithium battery systems up to 1000V. As part of JK’s advanced HV series, this BCU operates as the Master BMS, providing centralized management for multiple battery modules through Master–Slave architecture.
With a powerful 200A control capability, this BMS is engineered for demanding applications such as commercial ESS systems, PCS high-voltage banks, large-scale solar storage, EV powertrains, and industrial battery modules.
It does not directly pass the 200A current; instead, it controls and manages external high-voltage relays/contactors, pre-charge circuits, and safety mechanisms.
It ensures pack-level safety by managing over-voltage, under-voltage, over-temperature, insulation resistance, and system current status. Combined with JK Slave BMS units, it monitors each cell group with precise, real-time accuracy.
⭐ Key Features
🔹 Supports Ultra-High Voltage Battery Systems (Up to 1000V)
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Designed for large, multi-series battery banks
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Stable, insulated, and safe operation across high-voltage ESS
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Suitable for both DC-coupled and AC-coupled systems
🔹 200A High-Current Control Capability
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Manages high-voltage systems rated up to 200A
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Controls external:
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High-voltage relays/contactors
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Main switching circuits
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Pre-charge resistors
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Provides safe and coordinated switching for large power systems
🔹 Master–Slave Architecture for Multi-Pack Systems
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Works with JK Slave BMS units (e.g., 16S slave boards)
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Supports multiple battery modules in series or parallel
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Centralizes all monitoring and safety decisions
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Scalable design for large and expandable ESS banks
🔹 Advanced Protection Functions
The BCU provides full system-level safeguards, including:
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Over-voltage protection
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Under-voltage protection
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Pack over-current monitoring
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High/low temperature protection
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Insulation resistance detection
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Pre-charge control & monitoring
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Relay/contactor safety verification
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Short-circuit system detection
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Communication supervision with Slave BMS units
This ensures safe, stable operation in complex battery systems.
