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BQ77910A Balancing Check

Tobias Ofenberger
Prodigy 40 points

Hello TI Community,

I have a Question. I develop a BMS for 10 LiIon Cells. My circuit diagram is finished. But how can I check at the first,  initial start which cell gets balanced? Can I connect paralell to the 47 ohm resistors a Led (R2 - R12)?

Thanks for your Help

  • 0
    TI__Guru 54715 points

    A high impedance sensor would be preferred to a direct LED which could alter the current flow in the filter.  If you look at the differential voltage across the filter capacitors, the balancing cell will have a low average voltage, the adjacent cells will have a higher average voltage and the un-related cells will typically look normal.