Quote:
Originally Posted by Cyruscosmo
...I like the idea of placing one small board on each battery and daisy chaining them together. Fewer wires, points of failure and less hassle all around. Plus if one board does not respond it is easy to change out.
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The
Low Cost BMS does that, there is a thread here on EcoModder all about it.
It's the one i am going to use.
Small board mounted on top of each cell, daisy chained comms using opto's for isolation. A master display for mounting in the cabin that shows high and low cell voltages and temperatures, also total pack voltage.
A charger output to control the charger to achieve a top balance on each full charge.
Load resistors on each cell top module to slow the rate of charge on individual cells to allow the lowest voltage cells time to catch up and achieve a top balanced pack.
There are several members using the set up in their cars with good results.
With a BMS reliability is the number one consideration, it being cheap is just a bonus.
