On Oct 15, 2014, at 10:04 AM, Peter Gabrielsson via EV <ev@lists.evdl.org> wrote:
> As for cellphones the real limiter on how fast you can recharge tends to be > the connector, cables and power supply. Cars, too. 10 kWh / minute is 600 kilowatts, a most impressive power transfer rate. That's going to be a significant fraction of your neighborhood's total average power draw -- all for just one car to charge at that rate (though, of course, only for a few minutes). If that's going to be how we charge our cars, we're going to need at least twice as many batteries: one set in the car as today, and then another set at the charging station that slow-charges at whatever rate its grid tie can handle -- and that then fast-discharges into the car's battery. Charging stations will still have massive underground storage, only full of batteries rather than gasoline tanks. ...though the electric utilities might actually find something like that desirable. The same stations that charge cars could provide peaking power back to the grid. At least today it'd be a very expensive capital investment, but the operational costs would be trivial to today's peaking generators. If the companies think they can make an offsetting profit by becoming the new "gas" stations, it could well happen. b& -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 801 bytes Desc: Message signed with OpenPGP using GPGMail URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20141015/91f62ba8/attachment.pgp> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
