SWRU640 March   2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
      1. 1.4.1 CC2662R-Q1
      2. 1.4.2 BQ79718B-Q1
      3. 1.4.3 TPS3436-Q1
      4. 1.4.4 TPS715-Q1
      5. 1.4.5 TXU0204-Q1
      6. 1.4.6 LM5168-Q1
  8. 2Hardware
    1. 2.1 Power Requirements
      1. 2.1.1 Powering with Batteries and Wiring Harness
      2. 2.1.2 Powering with Source Meter/External Supply and Using the Resistor Ladder
    2. 2.2 Temperature Range
    3. 2.3 Programming, Debug, and Control
      1. 2.3.1 Using a Generic XDS110 Debug Probe, Including a Separate LaunchPad
    4. 2.4 Interfaces
      1. 2.4.1 Debug Interface Connector
      2. 2.4.2 BQ Daisy Chain Interface
    5. 2.5 Jumpers
    6. 2.6 General Features
      1. 2.6.1 BQ DCDC Converter (LM5168-Q1)
      2. 2.6.2 BQ Voltage References
      3. 2.6.3 BQ Resistor Ladder
      4. 2.6.4 BQ Busbar
      5. 2.6.5 CC2662R-Q1 LDO
      6. 2.6.6 CC2662R-Q1 Watchdog
      7. 2.6.7 BQ to Wireless MCU Level Shifter
      8. 2.6.8 Status LEDs
    7. 2.7 Advanced Use of the EVM Hardware
      1. 2.7.1 Base or Stack
      2. 2.7.2 Ring Architecture
      3. 2.7.3 Busbar Position
      4. 2.7.4 Radiated/Conducted Testing
      5. 2.7.5 Communication Isolation
  9. 3Software
    1. 3.1 Software Development
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Compliance Information
    1. 5.1 CE Compliance
    2. 5.2 REACH Compliance
    3. 5.3 Waste Electrical and Electronic Equipment (WEEE) Compliance
  12. 6Additional Information
    1. 6.1 Known Hardware or Software Issues
    2. 6.2 Trademarks
    3. 6.3 Terminology
  13. 7References

2.6.4 BQ Busbar

The busbar, typically a metal piece positioned between two battery modules to link them in series, serves as a crucial element that can be monitored by the device. This monitoring enables the assessment of the connection status between battery modules and their evolution over time.

There are two primary methods to connect the busbar to the device:

Initially, it can be monitored using a VC channel by configuring software. Instead of having 18 cells being monitored, one or more of the cells would be monitoring a busbar instead of a battery cell.

Alternatively, a busbar that is between two cells can be monitored using the BB pin on the device. In this configuration, all 18 cells can be monitored in addition to one busbar. The user can configure the busbar to be between various cells by changing some components on the EVM. For detailed instructions on modifying components to adjust the busbar's position, please refer to the Advanced Use of the EVM Hardware section.