BQ40Z50-R1: BQ40Z50_R1 SOC problem

user5962456

Part Number: BQ40Z50-R1
Other Parts Discussed in Thread: BQSTUDIO

We Use BQ40Z50R1 for 4s LifePO4，After aging, our battery has a charge of 80%, but after standing for a period of time, the SOC of some batteries will become 95%, and some will become 75%, most of which are 80%, and the problematic ratio is 20%. We made ID and mass production documents according to the requirements。What is the problem and how to solve it？

We make the ID on GPC ,our ID is 457: DOD error is 7.44%.

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

Could you provide a bqStudio log file and your srec file?

In addition, have you guys done the learning cycle? Thanks.

Andy

0 user5962456 over 5 years ago in reply to Andy Liu (BMS)

Prodigy 30 points

we have done the learning cycle，attach the gg file.The problem is randomly occurring，I can’t get the log file when the problem is occurring.

For problematic batteries，We do a learing cycle，Battery return to normal，I am not sure if there will be an exception。1245_0531.gg(2).csv

0 Andy Liu (BMS) over 5 years ago in reply to user5962456

TI__Guru 52115 points

Without a good bqStudio log file, it is almost impossible to figure out what the root cause is. I would suggest you try to get a bqStudio log file.

Andy

0 user5962456 over 5 years ago in reply to Andy Liu (BMS)

Prodigy 30 points

please help us check the gg file ，what problem with our gg file Configuration can cause is.7282.1245_0531.gg(2).csv

0 Andy Liu (BMS) over 5 years ago in reply to user5962456

TI__Guru 52115 points

I took a quick look. The gg file seems okay. In addition, you should have completed the leaning cycle successfully and therefore your settings should be fine. Please share a bqStudio log.

Andy

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BQ40Z50-R1: BQ40Z50_R1 SOC problem