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CCS/BQ40Z60: How to calculate ASOC?

Emma Wang_DELL EMC
Intellectual 695 points
Part Number: BQ40Z60

Tool/software: Code Composer Studio

I don't see the formula for absolute state of charge calibration. How to calculate? what is the formula?

  • 0
    TI__Guru 52115 points

    The formula for ASOC should be the predicted remaining battery capacity / the battery's design capacity.

     

  • 0 in reply to Andy Liu (BMS)
    Intellectual 695 points

    1, Do you mean ASOC(0x0E)= Remaining capacity(0x0F)/design capacity(0x18)?

    2, Does design capacity(0x18) change in normal working process after I configure it 54000 in golden image?

    3, Where can i see design capacity? in register or watch?

    Thanks!

  • 0 in reply to Emma Wang_DELL EMC
    TI__Guru 52115 points

    1, Do you mean ASOC(0x0E)= Remaining capacity(0x0F)/design capacity(0x18)?

    The raw ASOC is calculated using the equation above.  The actual ASOC reading might be slightly different, depending on some other configurations.

    2, Does design capacity(0x18) change in normal working process after I configure it 54000 in golden image?

    3, Where can i see design capacity? in register or watch?

    You can find and change the Design Capacity in the Data Flash. Also, the design capacity is a constant and the gauge device will not change it.