• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 676 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.

Battery management system

Abhishek Vijayan
Prodigy 20 points
Other Parts Discussed in Thread: BQ76952, BQ79616

could you please suggest a 40-series Battery Management Module Reference Design?

Can the design given in the below link from TI can be developed for a 40battery series? If yes please suggest the constraints that needed to be taken care of.

Link: www.ti.com/.../tiduc43a.pdf

  • 0
    TI__Expert 3425 points

    Hi Abhishek, 

    Unfortunately we do not have such a reference design readily available for this monitor family. I would also add that when you start stacking these devices you do so with much more external componentry such as comm. line isolation for level shifting, among others. Not to mention that as you stack beyond 2 devices, the device performance may suffer as a result if no properly implemented. 

    We do have one monitor that recently went live on TI.com BQ79616PAPR which has a dedicated stacking interface and can easily meet the 40s BMS requirement. Though it is an entirely different architecture to the industrial grade monitors and more closely resembles the BQ79616Q1.

    You can visit the product page here: https://www.ti.com/product/BQ79616

    Best, 

    -Luis Torres

  • 0 in reply to Luis Torres
    Prodigy 20 points

    You are suggesting the above device with 16 cells capability to be stacked up to 3 in number to serve the purpose of 40 cells?

  • 0 in reply to Abhishek Vijayan
    TI__Expert 3425 points

    Hi Abhishek, 

    Yes that is correct. 

    With BQ76952, careful consideration would need to be taken for communication isolation and how to handle protections and events among three AFEs in a stack. When stacking BQ76952, It is recommended that all devices be on the same board. 

    The BQ79616 eliminates the need for this communication isolation when stacking, as it has a dedicated interface to do this resulting in much better accuracy. 

    Best, 

    -Luis Torres