BQ27421-G1: ImpedanceTrack parameter

Hirokazu Takahashi

Part Number: BQ27421-G1
Other Parts Discussed in Thread: GPCCHEM

Dear Support team,

Q1. Is "ImpedanceTrack" TI's patent?
Q2. Can we request to create the necessary parameter data for "Impedance Track" by measurement data with Fuel Gauge?
If possible, what kind of measurment data is necessary?

Best Regards,
Hirokazu Takahashi

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

Yes. The Impedance Track gas gauge algorithm is proected by TI's US patents.

Can you elaborate on your second question? Are you asking how to use the IT gauge device?

Andy

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

TI__Expert 8420 points

Hello Andy-san

Regarding my Q2, we would like to request to set the parameter for Impedance track by measuring our battery performance.
We can provide our battery to your team.
Would you accept our request?

Best Regards,
Hirokazu Takahashi

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

TI__Guru 52115 points

You don't need to ship any battery to us. Customers can set the configurations by themseleves according to their applications.

BQ27421-G1 is a ROM gauge and has a few different part numbers (G1A, G1B and G1C). I would suggest your customer submit a request in the GPCCHEM website (http://www.ti.com/tool/GPCCHEM) and find the right part for their applications. Details about how to submit a request can be found in that website as well.

Andy

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

TI__Expert 8420 points

Hello Andy-san

Thanks for your reply.
Could you let me know other products for covering 1cell 4.2V Max Charge?

Best Regards,
Hirokazu Takahashi

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

TI__Guru 52115 points

Try this online tool.

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

TI__Expert 8420 points

Hello Andy-san

Thanks for your reply.
We provide log file of battery.
Could you please check whether the attached file will be acceptable at GPCCHEM?

Current sensing 3V 1A (2019 12 09).xlsx
Best Regards,
Hirokazu Takahashi

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

TI__Guru 52115 points

Are you sure you uploaded the right file? It doesn't seem right to me. Also, please take a look at the instructions manual below to prepare the log file to submit to GPCCHEM. It is also available in the GPCCHEM website.

http://www.ti.com/jp/lit/an/slva725a/slva725a.pdf

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BQ27421-G1: ImpedanceTrack parameter