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Li ion BMS Passive balancing

Discussion in 'General Electronics Chat' started by Kranthikkenoch, Sep 11, 2017.

  1. Kranthikkenoch

    Kranthikkenoch New Member

    Jun 28, 2017
    Hello everyone,

    Below is my circuit for passive balancing Li ion battery pack, I have used differentials opamps to monitor individual cell volatge everything works fine
    but my cell voltages fluctuate a lot like around 3.5-3.4V when I turn on my mosfets. Please suggest me if I should add any capacitors or diodes to the circuit to avoid errors and what is its purpose

    BAL8,BAL7, BAL6...are my inputs to turn on or off mosfets using Microcontroller and I have used 24ohms resistors as load for discharge

    Attached Files:

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