David, In my book charging a 40kWh battery in 1/60th hour (one minute) to 80% means 40 x 0.8 x 60 = 1920 kW, almost 2 Megawatt. Still a pretty large number but not the power consumption of one of the smaller states. Since fueling a gas car can easily take 5 mins, I presume that 400kW of power would be more realistic and this is the capcity that a smallish business building is connected at, typical 480V 3-Phase so now you are down to less than 300 Amp per phase. Of course, charging multiple cars will bring this up again but then you can buffer with a battery bank and just have a constant draw that is the average of the amount of oiwer that is delivered, so the time to pull up, get out of the car, authenticate yourself (with chip card) and pay (if not included in the authentication) and after filling up, pulling away from the station for the next person to be able to charge - during all that time no charge flows, so the average is always quite a bit lower than the peak. With a battery bank to smooth out the peaks over slightly longer time it can be assured that no "pump" will cause more than half the peak value, so with 5 "pumps" you will need no more than 1 MW connection. Hope this clarifies, Cor.
-----Original Message----- From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of EVDL Administrator via EV Sent: Monday, November 20, 2017 7:55 AM To: Electric Vehicle Discussion List Cc: EVDL Administrator Subject: Re: [EVDL] EVLN: Fisker's 3D electrode li-ion promises 500Mi EV& 1min recharge On 20 Nov 2017 at 3:04, brucedp5 via EV wrote: > If it lives up to expectations, this battery will provide electric > vehicles with a range of over 500 miles on a single charge. On top of > that, recharging will only take a minute. How many times have I read these words? Especially the "If it lives up to expectations" part. An EV with a 200 mile range will need a battery of at least 40kWh capacity. Charging that battery to even 80% in 1 minute would require an electrical service with a capacity of roughly 2 GIGAwatts - and that's just for one car. If you wanted to charge, say, just 5 cars at once, you'd need at least 10gW of capacity. That's about 1.3% of the ENTIRE US capacity. Where exactly is that kind of capacity going to come from? I suspect this piece is little more than trolling for investors. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
