BQ40Z80: How to configure registers to keep SOC unchanged without successful learning?

Jason Zhao39

Intellectual 360 points

Part Number: BQ40Z80
Other Parts Discussed in Thread: BQSTUDIO

As the battery pack did not learn successfully, SOC changed from 75% to 0% after standing for more than ten hours.

How to configure registers to keep SOC unchanged without successful learning?

Tnanks

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

Hi Jason,

The learning cycle is critical for the gauge to perform correctly.

Did you make a log file in bqStudio when you ran the learning cycle? If so, share with us your log file. We will take a look and see what might be the cause of your learning cycle failure?

0 Jason Zhao39 over 5 years ago in reply to Andy Liu (BMS)

Intellectual 360 points

With charging, SOC increases from 0% to 75%. After standing for more than ten hours, SOC changed from 75% to 0%. How can the SOC be configured to remain unchanged?

thanks

0 Andy Liu (BMS) over 5 years ago in reply to Jason Zhao39

TI__Guru 52115 points

Hi Jason,

Could you please confirm that you have already run the learning cycle successfully? Thanks.

Andy

0 Jason Zhao39 over 5 years ago in reply to Andy Liu (BMS)

Intellectual 360 points

I can't learn successfully. I just need to wait for more than ten hours, and SOC doesn't jump.

0 Andy Liu (BMS) over 5 years ago in reply to Jason Zhao39

TI__Guru 52115 points

Hi Jason,

When you perform the learning cycle, I suggest you click the "Start Log" button in the bqStudio and then create a log file.

Share with us your log file and gg file if your learning cycle fails. We will take a look and give you some help.

Andy

Power management

Power management forum

BQ40Z80: How to configure registers to keep SOC unchanged without successful learning?