400v x 20 amps won't meet your range needs. Also you will definitely be designing a charger for this...First off this is not a joke or anything. For our senior design project we are required to build a battery charger for an electric van.
A little background - our university has a student transportation system, which consists of 15-passenger Ford E-350 vans that drive around campus from 5 PM to 3 or 4 AM, allowing students to catch a ride home late at night without risking getting mugged, etc. The vans drive about 100 miles each night, and with all the idling they get about 4 MPG. A few senior design groups decided to take on the daunting task of converting one of these to an all electric vehicle. Our group is tasked with building the charger, other groups are working on the battery management system and user interface.
The design currently includes a 400 Volt motor and controller (yes, 400!). For the battery pack, we were looking at getting about 100 Saft 41 A-hour lithium ion batteries. The decision to use LI-Ion is based on weight and power density requirements.
Basically we are looking for any expertise on where we could buy a charger that would be able to charge a 400V, 20(ish) Amp pack, or if we are going to be best off building it ourselves, etc.
Thanks in advance!
eLIMO Charging Team
Luckily chargers are very simple... just find a large 450v or so toroidal transformer for it.