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Algorithm for coulomb counting, for soc & soh estimation

smash Micheal
Intellectual 1000 points
Other Parts Discussed in Thread: TIDA-00449

Dear all,

Am looking to write code for soc & soh estimation.

I do not want to use Fuel Gauge chip, but want to use coulomb counting algorithm.

Please help to share from where can i get it. ?

Rohit

  • 0
    TI__Guru 54715 points

    Hi Rohit,

    Coulomb counting is just summing all the values from the coulomb counter over time.  At some point you have to decide a reference point to set your calibration, typically full or empty. 

    State of health is a decision or calculation of a condition that something has changed enough to be suspect or no longer perform the desired function of the system.  It could be determined in different ways, one might be when capacity has decreased a certain amount.

    The algorithms TI uses are part of the value in the gauge devices and are not available. TIDA-00449 has some code which may offer basic indication of charge.  You should be able to find enough information from industry references and research papers to implement something which is not patented.