• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 710 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.

Charge inhibit/suspend mode, BQ3060

Karlis Tucs
Expert 1385 points
Other Parts Discussed in Thread: BQ3060

Hello all. 

I am using Bq3060 with 57Ah 4S17P Li-ion batteries.

I was discharging batteries at -31,2 degrees and turned on the charger of the batteries. 

Theoretically bQ3060 should not allow charging. JT1 is set ar 0 degrees and hysteresis is 1,5 degrees,

BUT bq3060 allowed charging for about 1 second.

I did this 3 times and the charging current for this 1 second was 500mA and another time it was 2A. 

So my questions :

1. Is this normal for BQ3060 to allow the charging for a little bit of time in temperatures below JT1? If not then could it be some kind of fault on Battery management board on which bq3060 is placed on?

2. Is this 1 second of charge in freezing temperatures bad for the battery?

Thanks in advance!

  • 0
    TI__Guru 73830 points
    If the CHGSUSP bit is set in the Operation Cfg B register, then the CHG FET should be turned off whenever the temperature in in the JT1 range. There should not be any charge current in that case. Do you know where the FET is off? I am not sure about damaging the cell if charged at low temp. You will have to check with the battery manufacturer.