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Topic: Individual battery voltage (Read 552 times) previous topic - next topic

rjason

Hello everyone,

I have 8 battery cells (3.2v-3.7v ea) that are in series to give me ~28v. I would like to monitor the voltage of each cell. Any suggestions on how to do this and not create a ground loop? I went down the path of using an octo, and it sorta works, but the values aren't linear making it difficult to calibrate. It looks like a lot of project put a small PIC on each cell and have it report back to a master via octo protected communication. I'm trying to avoid having to do that since I'm only looking to monitor 8 cells.

Thanks,
-jason

James C4S

What about using a Battery Stack monitor?

http://www.linear.com/product/LTC6802-1
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

rjason


What about using a Battery Stack monitor?

http://www.linear.com/product/LTC6802-1


Very interesting chip. Happen to have any experience using one w/ an Arduino?

Thanks,
jason

James C4S

No but the SPI interface would be beneficial.  Now knowing such monitors exist, maybe someone else has used one (and created a library) with the Arduino.
Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

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