Skip to main content

BCU2002

HV Battery Control Unit

The BCU2002 is a high-voltage, multi-master Battery Control Unit engineered for enterprise-grade energy storage and industrial deployments. It senses pack voltage up to 1500 V, coordinates as many as 16 galvanically isolated slave modules, and adds four isolated analog inputs for precise system measurement. Dual CAN Bus, RS485, RS232, and redundant RJ45 daisy-chain links are all 1.5 kV isolated, while onboard WiFi and GSM, MicroSD logging, and a battery-backed real-time clock make it a complete control and monitoring hub for the most demanding battery systems.

BCU2002

Overview

The BCU2002 is a high-voltage Battery Control Unit built for the most demanding multi-master energy storage systems. It senses up to 1500 V, manages as many as 16 isolated slave modules, and reads four isolated analog channels for full-system visibility. Communication is comprehensive and 1.5 kV isolated across dual CAN Bus, RS485, RS232, and redundant daisy-chain, with WiFi and GSM for remote connectivity. Four relay outputs, isolated digital I/O, MicroSD logging, and a battery-backed clock deliver enterprise-grade control and traceability.

Request Quote
The BCU2002 is a fully digital, multi-master Battery Control Unit for high-voltage systems, sensing pack voltage up to 1500 V and coordinating as many as 16 galvanically isolated slave modules. Four isolated analog inputs and two isolated current-sensor channels give it precise, full-system measurement, while a comprehensive protection suite covers voltage, current, temperature, delta, precharge, and balancing faults. It runs from a 15 V to 80 V external supply, drawing around 2400 mW in run state and dropping to roughly 1 mW in power down. Connectivity is built for redundancy and isolation: dual CAN Bus, RS485, RS232, and two RJ45 daisy-chain ports are all 1.5 kV isolated and speak the LiBat, JSON, Modbus RTU, and custom CAN protocols, with onboard WiFi and GSM for remote monitoring. Four relay outputs together with isolated digital inputs and outputs drive contactors and accessories directly, while a MicroSD card, a battery-backed real-time clock, and USB support onboard data logging and servicing. Together they make the BCU2002 a complete, enterprise-grade control hub for large industrial battery systems.

Highlighted Features

  1. 01

    Flexible Slave Module Support

    Compatible with BMS1802 and BMS1202 slave modules.

  2. 02

    Optional High Voltage Measurement

    Up to 4 channel high voltage sense inputs.

  3. 03

    No Current Limit

    Depends on external sensor specification. Any current level can be calibrated, which aligns with 0 to 5V sensor output.

  4. 04

    Dual Current Measurement Mode

    Dual curent sensor support with two independent current sensor channels can be set for High and Low current channels, or used separately.

  5. 05

    Shutdown or Run Mode

    Device runs in full power mode when powered up, but a shutdown mode can be triggered anytime by parameters or user button action. In shutdown mode, all components are powered down, including the input DC-DC, for minimum power consumption.

  6. 06

    Wake-Up

    User button input always wakes the device up from shutdown mode.

  7. 07

    Onboard Power Supply

    Any power source can be applied as power supply between 18V and 80V. Depending on cell chemistry, the device can directly power up from the battery output.

  8. 08

    Parallel or Series Modes

    Standalone master, master-slave, and multi-master modes can be set via the configuration tool for various battery pack architectures.

  9. 09

    Flexible Inputs and Outputs

    Any I/O function can be assigned to any available input or output for maximum flexibility.

  10. 10

    Pre-Charge

    Precharge events can be observed and their parameters set via the configuration tool. Precharge can be disabled, or activated in time-only or time/current mode, to meet the maximum flexibility of the battery pack. Any output can be assigned for precharge functionality.

  11. 11

    Display

    Any CAN Bus compatible display option can be used for detailed monitoring.

  12. 12

    Remote Monitoring

    A GSM and GPS based optional extension board can be used as an add-on. After connecting the extension, a simple firmware upgrade is needed to start remote monitoring of the system via the GSM line.

  13. 13

    Bluetooth and Wireless

    You have options for Bluetooth monitoring via a mobile application, or wireless monitoring via a browser on the local network. An external wireless-compatible display option or wireless module device needs to be connected via the CAN Bus line.

  14. 14

    Flexible Digital Charger Integration

    Digital charger integration can be configured for various charging scenarios: start-stop charging at a certain level, setting power paths according to the charger connection, preventing driving while charging, and more.

  15. 15

    Charging Curve

    Up to 30 charging current points can be defined for a more efficient charging profile suited to any type of battery pack. Current points based on SOC and temperature set the current level when a digital charger is connected to the CAN Bus line.