BQ40Z50-R2: show battery capacity problem

Xianrong Shang

Part Number: BQ40Z50-R2
Other Parts Discussed in Thread: BQ40Z50, BQSTUDIO

Hello.

I debug the BQ40Z50 - R2 on the pack, 1 cell, 3 parallel and 1 in series, 9750mAh, without the functions: PTC,FUSE,PRES,BTP, I don't use them.

I have sonfigurated the DATA MEMORY, and set to single, I have wrote the capacity value in the Design Capacity, I have updated the CHEM-ID.

The problem is : the three red arrows showed as below, three are 0. Why?

Afer reset, the abnormal phenomenon is still exist. Why?

over 7 years ago

0 Swaminathan Ramanathan75031 over 7 years ago

TI__Expert 6575 points

Hi,

Could you please post a brief log (1 or 2 minutes) from bqStudio:

Please also post your gg file (Please done open and save in Excel) in original gg.csv format:

This will help me debug this issue.

Regards,

Swami

0 Xianrong Shang over 7 years ago in reply to Swaminathan Ramanathan75031

Intellectual 855 points

Hello, I have the log and gg attachments, but I can't upload them in the E2E, it's failed some times.

0083.bq40z50.zip

0 Swaminathan Ramanathan75031 over 7 years ago in reply to Xianrong Shang

TI__Expert 6575 points

The setting for the terminate voltage "Gas Gauging","IT Cfg","Term Voltage","9000","mV" is set to 9000mV.
since your cell stack voltage is below 9000mV, the FCC and RemCap are 0.
I would recommend adjusting this value and resetting the gauge.
Regards,
Swami

0 Xianrong Shang over 7 years ago in reply to Swaminathan Ramanathan75031

Intellectual 855 points

Thank you.

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BQ40Z50-R2: show battery capacity problem