Hello,
Im looking for advice, tips and tricks and if it is possible with arduino to monitor a battery with a total of 20cells.
I need a project and my idea is to make a device using arduino to monitor charge/discharge of a battery with a total of 20cells. In the ens plot data/voltage for each cell.
Is this possible?
Each cell = 0-1.8V.
Which arduino would you recommend? There are only 5 inputs for this on the one i was looking at. If so, i would need to buy several arduinos
Thanks!!
Hello telebrant94
Welcome to the worldbest Arduino forum ever.
Take a search engine of your choice and ask the WWW for 'bms +arduino' to collect some data to be sorted out to get the needed information.
Have a nice day and enjoy coding in C++.
"Monitor Battery Stack" would also be a good search.
My first hit:
TI are also well-known in the field:
also:
also try distributors:
etc, etc, ...
So which one were you looking at?
You don't necessarily need direct connections to the Arduino; eg, you could multiplex, or use A-to-D converters with bus interfaces...
any arduino and 2x BQ76930
Indeed - a TI chip:
Other TI chips, and other manufacturers, are available ...
or 5x quad op-amps and some multiplexer or ADC chip
Hmm, im curious about the idea behind using OP-AMP?
How are the cells connected?
idea is to compare two voltages and difference show on output. Li-Ion cells can't have more then 4,35V so Arduino analog input can analyze it.
Tell us more about that battery.
A stack of 20 cells in series? (0-36volt)
I don't know of a battery that has that voltage range.
Are you talking about 1.25volt NiMh (1-1.45volt).
The "flying capacitor" system is one way to accurately measure a stack of cells.
Leo..
I was wondering where you ended up with this. I came here with the thought of monitoring a Marathon NiCad aircraft Mainship Battery.
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