• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 278 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

BQ78350-R1: CEDV Load Profile

user5503575
Intellectual 800 points
Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQ76930, BQ78350, GPCCEDV

Hi,

I am using BQ76930 and BQ78350 for my battery pack. And I will use CEDV function but I have issue about the log files which I have to upload GPCPackager for CEDV fuction.

I will use my battery from -20°C to 30°C. And my load is not constant. 

Which 3 temperature level should I apply ? I am thinking to apply -20°C, 10°C and 30°C. 

My repeater load profile is;

300W 100ms
150W 500ms
200W

40s
150W 10s
50W 5s

This load profile repeats until SOC gets down %0. 

I need to apply 2 load profile for CEDV. Should I apply half and full of this profile values?

  • 0
    TI__Guru* 81035 points

    Hi,

    The temperature levels you selected are good for the temperature range of your application. For the load, I suggest full load and half load.

    When you collect the logs, make sure you set your protection thresholds wider than normal so that protections FETs do not open before reaching your terminate voltage. This will help the GPCCEDV tool to calculate parameters with better accuracy.

    Best regards,

    Matt

  • 0 in reply to Matt Sunna
    Intellectual 800 points

    Matt Sunna said:

    When you collect the logs, make sure you set your protection thresholds wider than normal so that protections FETs do not open before reaching your terminate voltage. This will help the GPCCEDV tool to calculate parameters with better accuracy.

    Thank you Matt. I have set current and temperature thresholds wider than normal conditions. There is no issue about current and temperature protections. 

    But I confused about voltage protection thresholds. I set CUV thresholds to 2500mV.  I will use my cells between 4.2V to 2.5V. Is it okey for GPCCEDV tool to calculate parameters with better accuracy?

  • 0 in reply to user5503575
    TI__Guru* 81035 points

    These voltages should be okay. 

    Regards,

    Matt