This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CCS/BQ34Z950: Battery cycle count not increase by 1 it set to 65303 or and garbage value and max error also 132%

Part Number: BQ34Z950
Other Parts Discussed in Thread: BQ2040

Tool/software: Code Composer Studio

Hello,
I am using BQ2040 Battery Pack.I have already using this with our Previous Project, now in my new project one problem arrived that when i have read "Battery Cycle Count" when we full Charged at that instant its get corrupted. as we are reading continuously reading in while loop.where other parameters are retrieved correctly. but my Battery cycle count display garbage value, i put our machine on testing for battery at a time of charging also count change from 0 to garbage value and at a time of discharging battery cycle count in this case our battery cycle count is 65303, we want normal case of battery after a charging and discharging battery cycle count should incremented by one So please could you tell us what precaution we should take so that we can not face the same problem.

  • Hi Ems

    Do not read from the gauge more than once per second. The battery parameters wouldn't change so quickly that would warrant more than one read per second.

    thanks

    Onyx

  • Hello Onyx

    Thanks for Reply, actually In our existing product We use the battery in that case Product 1 work OK but Product 2 consist battery cycle count Problem.

    Product 1 Data read from Gauge time is 335 mSec and product 1 current consumption is 200 mA in this case cycle count increase by 1 properly. but in Product 2 Data read from Gauge time is 1.05 Sec and product 2 current consumption is 305 mA but still Battery cycle count currupted it display max value like 65303, So please could you tell us what precautions and changes we should take so that we can not face the same problem.

    Regards
    Shalini Patil
    (R & D Engineer)
     
    Electronica Mechatronic Systems (India) Pvt Ltd
    Unit 37 & 44, Electronic cooperative estate,
    Pune-Satara road, Pune – 411009, Maharashtra
    India
    T - +91 20 24224440
    F - +91 20 24221881
  • Hello Onyx,

    we are not reading the data less than 1 sec and and the command delay is 400 usec  we saw the SMBUS data and clock line signal no data is overlap but still we are facing battery cycle count and max error garbage value issue, please help me to resolve this problem.

  • PEC is supposed to ensure the intergrity of your data. Why does your host not support PEC? Can you blue wire the comm lines so you can connect to bqevsw using an ev2300 or ev2400 so we see if our tool is able to read those parameters correctly?

    thanks

    Onyx