BQ34Z100-G1: Golden learning state-of-charge and remaining capacity suddenly turns to zero during charging phase

yan

Part Number: BQ34Z100-G1

Hello,

I have been working on this golden learning for a while and yet succeeded.

During golden learning charging phase, the state-of-charge & remaining capacity suddenly turns from 100 to 0. After finished charging & relaxed, the learning status also turns from 04 to 05. But cannot go on discharge with this 0 SOC.

Could you help to check where the problems lays and how can i go on with this golden learning?

Attached the log data and register setting.

Thank you very much for your kind support.

With Best Regards,

YanYan1logfile.gg.csv 8322.log data.xlsx

over 5 years ago

0 Wyatt Keller over 5 years ago

TI__Guru** 105590 points

Hello Yan,

I looked through your log file, it looks like SOC is working correctly during the initial charge phase, but then it is 100% while the battery is still charging. It appears to be a issue with the Full Charge Capacity (FCC) or your Design Capacity. Your FCC is maxing at 984mAh, which seems to be causing your problem.

Make sure your design capacity is set correctly and you follow the learning cycle section in the TRM very closely: https://www.ti.com/lit/ug/sluubw5/sluubw5.pdf?ts=1591717470061&ref_url=https://www.ti.com/product/BQ34Z100-G1

Also make sure you have uploaded a ChemID that matches your batteries profile by using the GPPCHEM tool.

Sincerely,

Wyatt Keller

0 yan over 5 years ago in reply to Wyatt Keller

Prodigy 80 points

Hi Wyatt,

Thank you very much for your help.

Finally,succeed with one cycle self learning.

With Best Regards,

YanYan

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BQ34Z100-G1: Golden learning state-of-charge and remaining capacity suddenly turns to zero during charging phase