Peter, Considering that the current level 3 chargers do about 60kW and Tesla's supercharger will be 120kW, it seems that 75kW or even 100kW is still low for future planning.
If someone wants to make a 300 mile trip, they're going to need to recharge somewhere along the way. Early adopters won't mind waiting an hour to charge, but I wonder if mainstream people would trade in their ICE with charge times that long. For example, to charge a 50kWh battery in 15 minutes, one would need a 200kW connection. I'm concerned that we'll be spending a fortune on infrastructure only to find it becomes outdated by the time it is installed. Am I being too optimistic or is that still beyond what the standards group thinks is going to be needed in the next 10 years? Peri -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Peter C. Thompson Sent: 10 September, 2013 6:50 PM To: [email protected] Subject: Re: [EVDL] EVLN: Nissan Expanding Global EV Lineup To Five Models Hi Peri, I feel extremely lucky - I mean I built my own electric 914, and work in a company that provides free charging, and now I'm getting to work on wireless EV charging. :) As for the timeframe of the standard, I really don't know when it would become "reality". I suspect that by the end of next year it should be solid, perhaps even published. What the standards groups are planning for is power ranges up to 75KW or even 100KW. There are several companies that are content with 3.3KW, but my personal opinion is that this is entirely too short-sighted. We shouldn't have to change the interconnects if we are going to shove more power through. Cheers, Peter On 9/10/13 8:48 AM, Peri Hartman wrote: > Peter, you are lucky to be in such a critical place of influence! How far > in the future are standards being designed for? My quip has been that what > we have today will be inadequate once batteries can hold enough energy for > 200+ miles per charge. A whole new set of charging interconnects may be > needed, perhaps like what Tesla has. I'd like to hear your thoughts on > this. > > Peri Hartman > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf > Of Peter C. Thompson > Sent: 10 September, 2013 8:07 AM > To: [email protected] > Subject: Re: [EVDL] EVLN: Nissan Expanding Global EV Lineup To Five Models > > On 9/10/13 1:15 AM, David Rees wrote: >> On Thu, Sep 5, 2013 at 9:03 PM, Peter C. Thompson <[email protected]> > wrote: >>> Nope, try again. :) We're getting much better than that. Better than > my >>> homebuilt plug-in car can do. >>> http://qualcommhalo.com >> I see you are an engineer working there! Cool! The only docs on the >> site say "comparable" charging times - which doesn't say much. If >> efficiency can get over 95% it'd almost be good enough for me to >> consider using for bulk charging - otherwise I'd prefer a >> hard-connection where efficiency is typically 98-99%. I hate turning >> energy into heat unless I need it! >> >>> The real proposition is in the city - where you dare not leave anything > that >>> the punks down the street can steal. >> Not just theft of cables, but vandalism is a real issue as well. >> >> My biggest issue is that we already have a quite a few different >> charging standards (J1772 for L1/L2, CHAdeMO for DCQC, J1772-Combo, >> Tesla has two different plugs (Roadster, Model S). Not to mention the >> various EV plugs that came before J1772 (which have thankfully mostly >> died off) and European standards (Mennekes). >> >> And now wireless charging standards - how many different manufactures >> of wireless charging are going to come out? Qualcomm has theirs - I >> know Nissan is also actively working on one and so is Toyota... >> >> Fragmentation is a big hindrance to plug-in vehicle adoption. >> >> -Dave >> _______________________________________________ >> 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) >> > Fragmentation is something we are trying to address in the standards > realm (that's what my job is - dealing with SAE and IEC) - we are > working on the specs to basically require interoperability. So even if > there are different methods of power transmission, the hardware will > require a minimum level of efficiency. > > Power transmission efficiency is something that we are working on > internally, so once I have something I'm allowed to publish, I'll let > you know. > > Cheers, Peter > _______________________________________________ > 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) > > > > _______________________________________________ > 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) > > _______________________________________________ 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) _______________________________________________ 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)
