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BQ34Z100-G1: BQ34Z100-G1 cycle count

Big Bill
Expert 1980 points
Part Number: BQ34Z100-G1

Dear  All:

    

  I  want to know the when does  the "cycle count" change, is there any limit to this parameter change？ I don't see any  description about the ""cycle count" in the datasheet. 

 1. Does it change immediately after the charge-discharge cycle or does it change immediately after charge or  discharge？

  2. can you tell me How long does it take for the cycle count to increase after the CC threshold reaches its set value？ one second？ or other result? 

   Thanks~

  • 0
    TI__Mastermind 25955 points
    Hi Big Bill,

    There are 2 different cycle counts in the gauge:

    Configuration>Data>Cycle Count increments whenever accumulated discharge is greater than or equal to CC Threshold. The value stored at Configuration>Data>Cycle Count is returned by the CycleCount(): 0x2C/0x2D command pair.

    When Qmax updates, Gas Gauging>State>Cycle Count is set equal to the value stored in Configuration>Data>Cycle Count.

    MaxError(): 0x03 is incremented internally by 0.05% for every increment of CycleCount() after the last QMAX update, e.g., ( ( Configuration>Data>Cycle Count - Gas Gauging>State>Cycle Count ) * 0.0005 ).

    Cycle count should update when the threshold is reached.

    Sincerely,
    Bryan Kahler