Description
JK MASTER BMS (BCU 100A) – JK 1000V HIGH VOLTAGE – Model: BBBB
The JK Master BMS BCU 100A (JK 1000V High Voltage BBBB) is a professional-grade Master Battery Management System designed for high-voltage lithium battery systems, supporting pack voltages up to 1000V. This system is built for commercial, industrial, and large-scale energy storage applications requiring extremely high safety, precision monitoring, and multi-pack coordination.
Designed to work in a master–slave architecture, the BCU (Battery Control Unit) acts as the central commander that manages multiple JK Slave BMS modules. It handles system-level safety, communication, current control, relay activation, insulation resistance detection, and real-time pack diagnostics.
Ideal for ESS systems, high-voltage EV packs, commercial solar power banks, UPS systems, telecom batteries, microgrids, and industrial energy storage arrays.
⭐ Key Features
🔹 Supports Ultra-High Voltage Systems (Up to 1000V)
-
Works with large series-connected lithium battery banks
-
Ideal for commercial ESS, PCS, UPS, and EV propulsion systems
-
Professional-grade insulation and high-voltage protection
🔹 100A System Control Capability
-
Manages systems up to 100A continuous (main control level)
-
Controls contactors, relays, and HV safety devices
-
Not a current-carrying BMS; it controls external HV relays/contractors
🔹 Master–Slave Architecture
-
Works with JK Slave BMS modules
-
Supports multi-module battery racks
-
Centralized monitoring and system balancing
-
Scalable for large battery banks
🔹 Advanced Safety Management
The BCU manages and verifies:
-
Over-voltage protection
-
Under-voltage protection
-
High/low temperature protection
-
Current abnormalities
-
Short-circuit protection
-
Contactor control & verification
-
Insulation resistance detection
-
Pre-charge management
Absolutely essential for safe HV battery operation.
🔹 Multiple Communication Interfaces
-
CAN Bus (compatible with inverters, chargers, PCS)
-
RS485
-
Ethernet support (model dependent)
-
Supports communication with:
-
Hybrid & off-grid inverters
-
BMS-controlled chargers
-
PCS units
-
Industrial control systems
-
Energy management systems (EMS)
-
🔹 High-Accuracy Cell Monitoring (via Slave Units)
-
Works with JK Slave BMS modules (e.g., 16S slave boards)
-
Captures:
-
Cell voltage
-
Module SOC
-
Module temperature
-
Balance activity
-
System health
-
🔹 Real-Time System Dashboard
When paired with the JK monitoring system, users can view:
-
Total system voltage
-
System current
-
Pack SOC
-
Temperature points
-
Cell deviation
-
Relay/contactor status
-
Event logs
-
Protection history
🔹 Industrial-Grade Reliability
-
High voltage tolerance
-
EMI-resistant communication
-
Heavy-duty casing
-
Long lifespan components
-
Designed for 24/7 operation
