Other Parts Discussed in Thread: BQSTUDIO, , EV2400, BQEVSW
Hi Team,
Can you please check and advise with request below?
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We currently have a tablet project and we are using a 4s1p lithium ion (US18650VTC6) battery to energize this tablet. We use the BQ34Z950 IC to protect the batteries. With the card we designed, we can communicate via BQStudio and EV2400. But as far as I understand, the chemistry and Chemical ID of the battery we use must be known in order for the Impedace Track algorithm to work. For this ID, it needs to be programmed integrated using Senc file compatible with bq34z950. But I couldn't find any file of our battery and the integration we use. I came across the following statement in the datasheet of the integrated we used:
(The bq34z950 updates the individual series cell voltages at 1-s intervals. The internal ADC of the bq34z950 measures the voltage, and scales and calibrates it appropriately. This data is also used to calculate the impedance of the cell for the Impedance Track gas gauging .)
Can it calculate the cell impedance with the measurements it makes in this integrated particular? Also do you need senc file? If need senc file, can you help us find chemical ID and senc file?
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I read the documents you sent, Bqstudio does not support programming our IC, we can program it with the bqEvaluation Software used before bqstudio. If you click on the link in the pane that I have shown in red below in the document you sent, and go to the user guide. We have to follow the directions here.
To start using an Impedance Track gas gauge, you will first need to identify the battery's chemistry type. In bqStudio, the Chemistry plug-in contains a giant database with names/numbers/text. The numbers represent a battery-chemistry ID (chemID).
Once you have the chemID, which should be a number between 100 to 9,000, you can program that particular chemID into your gas gauge IC. This step is required before a learning cycle and the generation of a production-ready golden file. If you are not able to find the particular chemID in the bqStudio Chemistry plug-in, you can download the latest bqStudio Chemistry Updater file.
On Page 3 of the User Guide,
NOTE: bqEVSW, bq Evaluation software (bqEVSW), and bqEasy must be installed on the PC before using the contents of this guide.
There is an expression, "There is no interface where we can select chemistry ID in the program we use. If we install another program called bqEasy, I think an interface called bqEasy will appear on the screen. (Just as shown in the document) But I couldn't find the bqEasy software version compatible with bq34z950
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Thanks in advance
Best Regards
Furkan Sefiloglu
