Replacing Car Batteries with Capacitors for EV - Answers Here!

[Proton Soup]

take care and read a book:)

what books do you suggest?

 

[Averagesupernova]

Ok. Fine. Let's start over. Exactly what is it you are trying to do? Don't sidetrack this thing again by saying that something would 'look cool' which has nothing to do with the discussion at hand.

 

[.:Endeavour:.]

Like uart said, you haven't specified the amount of power needed to operate or the current in one hour that you need in order to find the amount of charge before going to calculate the capacitance for the capacitor that you need. Voltage is one piece of the puzzle to find out the capacitor that you need.

When you know the current in one hour, you just do this equation to find the charge which is:
Q = I * t

Q = charge in coulombs
I = current in amperes
t = 3600 seconds or 1 hour

Then to find the capacitance you use this formula:

C = \frac{Q}{V}

C = capacitance which is measured in farad (F)
Q = charge in coulombs (C)
V = voltage

 

[david90]

lol naw it aint but the drive shaft isn't a bad idea. If you were to transform the entire drive shaft to a low rpm PMA that could recover some good energy with little resistance. But I don't know if like 10 pma assemblies would create enough to do anything. But would prolly look hella cool, kinda like some back to the future **** lol. Has that been tried? I think the load would rbring the vehicle to a winding stop if it even moved at all.

Generator creates resistance when it generates energy.

I'm not too clear on your idea but from what I've read, it's not going to work. Try it if you think it is going to work. If you fail, you'll still learn something new.

 

[lightsmith]

The March 12, 2009 issue of Nature has an article about lithium batteries which purportedly achieve ultrahigh charge and discharge rates (comparable to those of supercapacitors, according to the authors). They use LiFePO₄.