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BQ78350: cell aging study unsuccessful

user5883945
Expert 1806 points
Part Number: BQ78350

I use BQ78350 as my coulometer, Lithium battery 14 string,  battery configurations  64Ahr. the cell aging study unsuccessful.

the data flash as attachment, please give us some advise, thanks!

08-17.gg(1).csv

  • 0
    TI__Guru* 81034 points

    Hi,

    Can you describe more what you mean by the cell aging study is unsuccessful? I am not sure I understand. 

    If you can provide a log file and a description of the behavior it would be helpful. I noticed from your register settings, that the gauging parameters are all set to the default values. If you want to set up the device for accurate gauging, you need to go through the steps in the Gas Gauging section of the "Using the BQ78350-R1" application document.

    Best regards,

    Matt

  • 0
    Expert 1806 points

    Dear Matt:

         Cell aging study means cell aging compensation that device can modify parameter to achieve accurate gauging when the the battery has been used for a while.

  • 0 in reply to user5883945
    TI__Guru* 81034 points

    Understood. For this, you need to go through the steps in the Gas Gauging section of the Using the BQ78350-R1 document: https://www.ti.com/lit/an/slua924/slua924.pdf The Learned Full Charge Capacity will be updated after a full discharge cycle. This value will decrease as the capacity decreases as the battery ages.