Quote:
Originally Posted by Tri_Lam
To whom it may concern:
My name is Jeffrey Villar. My fellow class mates and I are doing a project on Solar Cars. Few questions have arrisen to our project.
First is When you wire cells into two diffrent series which endup producing two different voltage out puts, then connect those two series into a parallel connection. what happens to the voltage?
ex
arrange 7 cells w/ .5 voltage with 6 amps into two series one with 4 cells the other with 3 you get 4 cells withg a voltage of 2 volts and 6 amps while the other is 3 cells producing 1.5 volts with 6 amps. then putting both series into a parallel connection in theory gives us 12 amps but what is the voltage output? is it average?
also if you split a cell w/ .5 voltage with 6 amps what happens to the amps and volts????????????
Jeff Villar
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Jeff,
Cells in series add in voltage but keep the same current rating of the least current capacity cell. So yes, 4 0.5 volt cells@6 amps add to 2 volts@6 amps. It is not a good idea to put cells in parallel without some other devices to prevent the parallel cells from self discharging. (the cell with the higheer voltage will pass current to the cell with the lower voltage even if the cells are only a few millivolts different they will pass current) You cannot put two different cell voltages in parallel, the higher voltage will feed current into the lower voltage until all cells are at the same voltage.