• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 708 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ79612-Q1: Part recommendations for a 24S 100V Battery Pack BMS

Connor Hartman
Prodigy 10 points

Part Number: BQ79612-Q1
Other Parts Discussed in Thread: BQ79652-Q1,

Tool/software:

Hello,

I am developing a Battery Management System (BMS) for a 24-series cell, 100V nominal battery pack. The system requires cell voltage monitoring, temperature sensing, isolation detection, charge control, and other essential safety features. Our primary design constraint is packaging.

Currently, I am considering using two BQ79652-Q1 and two BQ79612-Q1 as the main ICs for this application. I would appreciate any insights on whether this selection is optimal or if there are any key considerations I may have overlooked. Additionally, any general advice on approaching the design process would be highly valuable.

I have reviewed the Design Recommendations for High Voltage Automotive BMS and will continue researching to enhance this discussion.

Thank you for your time and expertise.

Connor Hartman

  • 0
    TI__Expert 7140 points

    Hi Connor,

    For insulation detection, the BQ79631 would be recommended. The BQ79652 excels at measuring the current of the battery pack. The GPIOs of both the BQ79631 and BQ79652 can be used to enable MOSFET switches. For a 24-series cell, one BQ79652-Q1 and one BQ79612-Q1 can be used to monitor the current and voltages of all 24 cells + temp sensing. One BQ79631, and two BQ79612s can be used for insulation detection, temp sensing, cell voltage monitoring, and current of the battery pack. Charge control is not built into the ICs, a GPIO would be used to enable or disable switches.

    Regards,

    David Ray