• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 254 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.

Original question:

bq40z50 External Balancing calculation for Bal Time/mAh

bq40z cell balancing equations

Mihon Lipa
Intellectual 390 points 
Hello. I already asked a question on the forum about formulas for balancing time 
and I was given a link to a similar dialog with the file "bq40z cell balancing equations.pdf"

https://e2e.ti.com/support/power-management/f/196/t/436957 , 

where formulas are indicated that do not match the formulas from the Technical Reference. 
But it also says that these formulas are correct, just less confusing. 
I tried to calculate the values ​​using these formulas, but I get values ​​less than 1. 
Please see the attached Excel file. What am I doing wrong?

Calculations.xlsx

  • 0
    TI__Guru** 105760 points

    Hello Mihon,

    Are you using the internal or external cell balancing? I would recomend following the TRM for the calculation to compare with this document, I don't have any experience with the referenced document.

    Sincerely,

    Wyatt Keller