That is also why every L3 location should have an equal number of L2 stations, so that *if* somehow the fast chargers are blocked/down/whatever *or* for the drivers that need more than 80% charge, they can terminate the fast charge session when they get throttled back enough that it makes no sense to continue hog (and pay) for the L3 and move over to the L2 to go from 80 to 100% which should take another half hour to an hour at full L2 capability (L3 will not be faster as the BMS will throttle charging speed back to protect the cells from overvoltage anyway). If the L3 is down and someone arrives on "fumes" from his battery (turtle) then at least he can sip from L2 until he can make it to the next L3 instead of being stranded...
Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info http://www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of David Rees via EV Sent: Friday, September 02, 2016 8:12 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Lawrence's L3 25kW CHAdeMO network on I-5 in CA On Fri, Sep 2, 2016 at 6:58 PM, brucedp5 via EV <[email protected]> wrote: > IMO, L3 should be ~50mi apart. This is for several reasons: > - Short range EVs can use it (i.e.: iMiev) > > - as packs age their capacitiy is reduced, so even a tired (less than 90mi) > Leaf pack charging from 10% to 80% (70% or 90mi = ~60mi) could utilize the > L3 EVSE. > > - when the weather is cold, non/less thermally controlled packs will have > less range, so keeping the distance between L3 EVSE ~50mi will still work > for them At least for my 2011 LEAF with 8 capacity bars remaining, 50 miles is way too far apart. An 80% charge only takes me about 30 miles to LBW. To turtle I might have another 12 miles more. This is while driving at 65mph in good weather. If it were cold, wet or windy, it'd be even less. So IMO, 25-30 miles apart would be better (funny enough, this is typically about how far apart gas stations in rural areas) For EVs with more range, they would be able to skip locations. Tesla has started doing something interesting with their network. Instead of evenly spreading out stations to add capacity, they have started putting pairs of stations within a few miles together. IMO, this makes a lot of sense. That way if one is counting on getting to a charging station, but for some reason that station is down, busy or whatever, they should almost certainly make it to the next one a couple miles down the road. Dave _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ 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 Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
