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Unread 20-10-2013, 19:16
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protoserge protoserge is offline
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Re: LiFePO4 Batteries

Quote:
Originally Posted by yash101 View Post
Maybe I could calculate a function to solve for the battery "percentage" and the range of the vehicle. There will be 10 amps of reserve, enough for about 5-10 miles, depending on your driving style. Also, if I add regenerative braking, I shall add more range. Also, since these batteries will be weighing in at about 100 kgs, do any of you know of any high power, commercially available motors that will bring this 200-300 kg car to 60mph? I was looking at this: http://www.hobbyking.com/hobbyking/s...ner_Motor.html
However, it required a very high voltage (52 volts) at 250 amps! that's a lot of juice! The batteries won't provide enough energy for more than maybe an hour of runtime, dropping the range to about 60-100 miles!
How are you calculating your numbers? What is your requirement? Before you continue to keep looking at motors and batteries, you have to start with a set of requirements to point your research in the right direction. Until you list out the requirements, we can't really help you solve your problem.

You said the car has to go to 60 mph, but how long does it need to travel at that speed? What is the acceleration required? How many stop-start cycles will be required? What is the vehicle weight constraint? How many wheels will there be?