TIDUFD0 August   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Wireless Hardware Configurations
      2. 2.2.2 Auxiliary Power Strategy
      3. 2.2.3 Thermistor Multiplexer
      4. 2.2.4 Cell Balancing
    3. 2.3 Highlighted Products
      1. 2.3.1 CC2662R-Q1
      2. 2.3.2 BQ78706
      3. 2.3.3 TMUX1308
      4. 2.3.4 LM5168
      5. 2.3.5 TMP61
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Software Requirements
    3. 3.3 Test Setup
    4. 3.4 Test Results
      1. 3.4.1 Network Performance
        1. 3.4.1.1 Network Initiation
        2. 3.4.1.2 Network Latency
        3. 3.4.1.3 PDR, PS
        4. 3.4.1.4 Low-Power Mode
      2. 3.4.2 Cell Voltage Accuracy
      3. 3.4.3 Temperature Sensing Using TMP61
      4. 3.4.4 Thermistor Multiplexer Timing
      5. 3.4.5 Current Consumption
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
      3. 4.1.3 Layout Prints
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author

Description

This reference design provides a 52s Wireless Battery Management Unit (wBMU) for energy storage systems with high cell-voltage accuracy. The wBMU passes voltage and temperature data from each cell to the host controller in real-time, using wireless communication technology. The design overcomes challenges in wired battery management system (BMS) architecture by avoiding cumbersome manufacturing processes, reducing frequent maintenance needs, and minimizing failure rates of connectors and harnesses. Wireless communication reduces the number of required cables and connectors, lowering system weight and costs.