I think network of charging stations should be built by the state. The state already pays much more to build bridges and highway, so what's the big deal?
Harry ----- Original Message ----- From: Jed Rothwell <[email protected]> Date: Wednesday, August 12, 2009 10:18 am Subject: Re: [Vo]:Nissan electric car > Michel Jullian wrote: > > >There might be a way for purely electric vehicles to deal with long > >trips, without the need for a network of charging stations, nor > even a > >network of gas stations: an Internet based peer to peer (EV to EV) > kWh>trading scheme, where home- or office- charged cars with energy to > >spare would automatically advertise their location and kWh for > sale on > >the Internet . . . Some kind of standard interconnection cable > would have to > >be devised, allowing cars to talk to each other during the charge > >transfer, notably to make sure that they agree on the amount of > energy>that has been transferred. > > I believe it would still take a long time to transfer the energy. > That is, to charge and discharge the batteries. Conventional > batteries are slow, no matter how much electricity you have available. > > Supercapacitors are fast. If you have them, you don't need another > car with a full-up battery. You can use an electric power > connection, > although as Mike Carrell pointed out years ago, a charging station > for several cars, equivalent to a large gas station, would require > a > lot of electricity with a good-sized substation. Perhaps as much as > a > shopping mall. Look in the back of one sometime to see the power > supplies. > A charging station itself would need a bank of supercapacitors to > smooth out consumption. > > - Jed > >
