Pages: [1]   Go Down
Author Topic: Individual battery voltage  (Read 486 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 3
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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
Logged

Austin, TX
Offline Offline
Faraday Member
**
Karma: 71
Posts: 6146
Baldengineer
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

What about using a Battery Stack monitor?

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

Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

Offline Offline
Newbie
*
Karma: 0
Posts: 3
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

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
Logged

Austin, TX
Offline Offline
Faraday Member
**
Karma: 71
Posts: 6146
Baldengineer
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

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.
Logged

Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.com

Pages: [1]   Go Up
Jump to: