BQ28Z620: SoH - SoC and Battery capacity values calibration issues for BQ28Z620DRZR IC

Thangapandi Nageswaran

Prodigy 20 points

Part Number: BQ28Z620
Other Parts Discussed in Thread: BQSTUDIO, GPCCHEM

Tool/software:

Hi TI Team,

We are facing some issues related to the following parameters for BQ28Z620DRZR IC

Remaining Capacity calibration
Full Charge Capacity
State of Health (SoH)
State of Charge (SoC)

We are unable to calibrate these values using the BQStudio tool. Could you please support us with the correct procedure or steps to perform this calibration?

And attached image for reference.

Thanks,

Thangapandi N

3 months ago

0 Adrian 3 months ago

TI__Mastermind 37761 points

Hello Thangapandi,

Did you complete the learning cycle?

Regards,

Adrian

0 Thangapandi Nageswaran 2 months ago in reply to Adrian

Prodigy 20 points

Hello Adrain,

Sorry for the delayed response. Due to some urgent activity, we were unable to engage in the BMS calibration tasks. However, we have now resumed the BMS calibration functions.

Currently, we do not have prior experience with the battery learning cycle method. We would appreciate your support and guidance on how to perform this process effectively.

For your information, we are using the DMEGC INR 18650-26E single Li-Ion cell.

Looking forward to your assistance.

Thanks,

Thangapandi N

0 Adrian 2 months ago in reply to Thangapandi Nageswaran

TI__Mastermind 37761 points

Hello,

First step is to complete the GPCCHEM tool to find a match ChemID for the battery you are using. Afterwards the correct ChemID should be programmed onto the gauge. https://www.ti.com/tool/GPCCHEM

Only after this is done can the learning cycle then be completed. I will also send a document for this. https://www.tij.co.jp/jp/lit/an/slua903/slua903.pdf

Regards,

Adrian

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Power management forum

BQ28Z620: SoH - SoC and Battery capacity values calibration issues for BQ28Z620DRZR IC