View Single Post
Old 03-11-2009, 10:45 PM   #58 (permalink)
bennelson
EV test pilot
 
bennelson's Avatar
 
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
Posts: 4,435

Electric Cycle - '81 Kawasaki KZ440
90 day: 334.6 mpg (US)

S10 - '95 Chevy S10
90 day: 30.48 mpg (US)

Electro-Metro - '96 Ben Nelson's "Electro-Metro"
90 day: 129.81 mpg (US)

The Wife's Car - Plug-in Prius - '04 Toyota Prius
90 day: 78.16 mpg (US)
Thanks: 17
Thanked 662 Times in 387 Posts
Rather than getting all complicated with solenoids and airbag sensors, just use a contactor.

Beefy contactors are rated for high amperage and already are remotely operated switches. Put an inertia switch in-line with the power to the coil of the contactor.

If you smack into something, it will kill power to the coil, and the big springs pop the contactor open, killing all power on your EV circuit.

You could even get a fancy contactor that would have 3 seperate connections on it (each isolated from each other) and snake your battery cables to it. Then anytime the contactor is disengaged, your battery pack would be broken into three parts.

I was thinking about doing something similar to that to break a 144V pack in half for 72V charging.
__________________


300mpg.org Learn how to BUILD YOUR OWN ELECTRIC CAR CHEAP
My YouTube Videos
  Reply With Quote