Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 01-15-2010, 12:30 PM   #1 (permalink)
Master EcoModder
NeilBlanchard's Avatar
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,884

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
90 day: 155.81 mpg (US)
Thanks: 3,404
Thanked 2,905 Times in 1,821 Posts
What would be an ideal EV drive train set up?


I skimmed through Doax's Prius plug-in thread, trying to find the brand of batteries used in the Enginer kit. And I'm thinking of trying to build an EV car from scratch. And I realized that I am just scratching the surface on learning about EV drive trains.

So, what would an ideal EV drive train look like? And by ideal, I mean it should be elegant, robust, and still is reasonably priced. I'm thinking that a pack size of ~24kWh would be a minimum -- the Aptera 2e (if it ever gets built!) would have a ~20kWh pack which in that incredibly efficient design (weighing 1,500-1,700 pounds) and would go 100 miles with 2 people, luggage, A/C on, etc, and 120 miles with one person with less stressful conditions.

If my math is right, a 24kWh pack made up of batteries like the ones in the Enginer kit, would weigh ~650 pounds.

Also using the Aptera as a guide, the motor(s) would be ~75kW total, if the weight was similar.

I am also thinking that a supercapacitor would be part of an ideal set up. The biggest challenge with this is the expense and the operating voltage of the supercap. Apparently, a high voltage supercap is ~$16K all by itself, whereas a 50v unit is ~$1K.

For all my info on the supercap, I am using the Carnegie Mellon "ChargeCar" project as a reference: ChargeCar PLEASE watch the video on that web page if you are at all interested in this subject! It is a little over an hour -- you will not be wasting your time.

So, the major holes in my knowledge are:

the charger

the battery management system

the motor controller

...anything else?

Sincerely, Neil

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Reply  Post New Thread

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
start a "Fire" fly EV project Trevs Introductions 17 06-25-2016 12:14 AM
Electric car conversion: Project ForkenSwift MetroMPG Fossil Fuel Free 1041 07-28-2014 09:19 AM
My first EV drive - Maya 300 robbiewt Fossil Fuel Free 3 07-21-2009 12:41 PM
charging a EV battery set idea americasfuture2k Fossil Fuel Free 8 11-24-2008 12:39 AM

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com