BQ34Z100: Learning Cycle Problems

Jonathan Gudelski

Part Number: BQ34Z100
Other Parts Discussed in Thread: BQSTUDIO

I have a 8S10P (28.8V 26Ahr) pack with a bq34z100. I tried to follow the documentation but some of the terminology doesn't seem to match bqstudio 1.3.80. Is "UPDATE_STATUS" now "LEARNED_STATUS"? The RUP_DIS, VOK, aand QEN all seem to behave correctly. The LEARNED_STATUS was 4 at the start, 4 during charge, 5 during discharge, and 6 once VOK was green again. I never saw any updates to the RA tables at any time. I was discharging at C/5 (5 amps). I use the manufactures recommendation of chemistry selection Samsung ICR18560-26H. Attached are the log files. I'm sure I missed a setting.

ThanksLog Files.zip

over 7 years ago

0 Bryan Kahler over 7 years ago

TI__Mastermind 25955 points

Hi Jonathan,

Yes, these terms refer to the same thing - I will escalate this matter internally for a fix.

Thank you for the multiple gg files. I have attached a screenshot below showing that the RA tables did update.

The second set looks like they did not update, but will do so on the next learning cycle. The gauge ping pongs between the two tables (Ra0 and Ra0x) to reduce flash writes to the same location and to ensure the data is not lost if the device loses power during a write (no overwrites).

Sincerely,

Bryan Kahler

0 Jonathan Gudelski over 7 years ago in reply to Bryan Kahler

Prodigy 50 points

So for clarity, Learned cycle=6 means that it was a successful learning cycle?

Thanks

0 Bryan Kahler over 7 years ago in reply to Jonathan Gudelski

TI__Mastermind 25955 points

Hi Jonathan,

Yes. To be even more specific, 5 means Qmax update and 6 means Ra table update.

Sincerely,
Bryan Kahler

Power management

Power management forum

BQ34Z100: Learning Cycle Problems