BQ78350-R1: BQ78350-R1 I,V,T calibration issue at Battery Management Studio

chiayuan li

Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQ76920, , BQSTUDIO

Dear all,

I use BQ76920+BQ78350-R1 solution for my 5S1P 18650 BMS design, and I have a setup issue by using "Battery Management Studio" software,

My unit could communicate with Battery Management Studio by SMbus and catch all of battery voltage as below,

then do voltage, temperature, and current calibration process, all of them will have below warning informatiom

"raw calibration block size returned after command 0xf081 or 0xf082 is an incorrect length"

Where can i setup this parameters? and what value should i key in?

Thank you very much.

over 7 years ago

0 David Hien over 7 years ago

TI__Genius 10830 points

Hi Chiayuan,
Your post has been assigned to one of our BMS experts.

Regards,
David

0 WM5295 over 7 years ago in reply to David Hien

TI__Guru 54715 points

Hi Chiayuan,
Some bqStudio installations had an incorrect bqz file for the bq78350-R1. I would have expected that to be solved in 1.3.76. Please see this post e2e.ti.com/.../484700 be sure to install the bqz file in the directory for the version you are using if you have more than one version.

0 chiayuan li over 7 years ago in reply to WM5295

Prodigy 190 points

Hi WM5295,
I have downloaded "2251.1E9B_1_03-bq78350-R1.bqz" and replaced "1E9B_03-bq78350_R1.bqz", it can solve calibration issue.
thank you very much.

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BQ78350-R1: BQ78350-R1 I,V,T calibration issue at Battery Management Studio