BQ34Z100: FullChargeCapacity is updated to 0maH

Hi,

There is not current reading on this log file. Was the gauge discharged? 

Regards,

Evan

GAUGE has complete charging and discharging

Hi Evan

I found Ra exception in the gg file; What causes abnormal updates here?

Hi Evan

chemID reference attachment.

best Regards

7288.report.zip

Hi Evan

R_a0 0 and R_a0 1 update exception. Is there a problem with the measurement of DOD0 and first resistance calculation?

Best Regards,

Hi Alex,

You are using ChemID 7028?

After redoing the learning cycle where the values different?

Regards,

Evan

Hi Evan

The chemID we are currently using is 5271；

The attachment is after the re learning cycle.

ChemID 7028is the result calculated by another cell(later tested).

5271.gg.csv5271.zip

Hi,

These Ra values look better than before, how is the gauge performing at this point? 

Regards,

Evan

Hi Evan

Our mass production uses this chemID 5271; But there are 5% of the defects, which are abnormal in R_a0 and R_a1, as shown in the above figure.

The Sch is as follows：

Hi Evan

By the way,If there is a significant difference between DODatEOC and DOD0, will it result in a large update of R_a0 0 and R_a0 1?

Hi,

The schematic looks ok.

DODEOC and DOD0 will not affect the Ra values.

What is the chemistry of these cells?

Are the cells balanced?

Can you hare the new .gg file.

Regards,

Evan

Hi Evan

We use LiNiCoMnO2 cells，4S3P；

There is balanced circuit；

5271 new.gg.csv

40757.Sch.pdf

Hi Evan

We have tried many methods, but still have not reproduced FCC=0;
Can you help reproduce this issue,
Also, we saw a similar issue on e2e. Do you know the final solution?

See Attachmente2e.ti.com/.../bq34z100-g1-soc-drops-to-0