Probably be fine but I would was to see the design of the on board charger to be sure. I used an AC to DC converter to make 12v for my EV conversion. My battery voltage was 170v and it worked just fine.
Sent from my iPhone > On Aug 14, 2019, at 8:51 PM, Robert Bruninga via EV <ev@lists.evdl.org> wrote: > > Amen! We all want direct DC to charge. But so far, I have not seen any DIY > approaches. > What I woiuld love to see someone do is feed DC into their EV using their > existing J1772 EVSE. > > As long as it is a 120v EVSE that does not use a tiny 12v transformer for > its internal electronics, then it should be fine. And the car "should" be > fine because the first thing it will do is full wave rectify the DC. And > since EVSE do not communicate voltage, but only current, then full wave > rectified 240 VAC is 330 VDC and so feeding 330 VDC directly from the panels > via the EVSE "should work fine" and charge at the 12 amp limit of the EVSE > for over 4 kW! > > Every modern universal 120v device I have tried works as well on 300 VDC as > it does on 120v AC. > > But who is the fool to test it on their $15k car? > > Bob > > -----Original Message----- > From: EV <ev-boun...@lists.evdl.org> On Behalf Of George Tyler via EV > Sent: Wednesday, August 14, 2019 9:21 PM > To: paul dove via EV <ev@lists.evdl.org> > Cc: George Tyler <g...@tylernz.com> > Subject: Re: [EVDL] FW: PowerWheels idea (Vehicle-to-home) > > I have been considering this too, seems silly to convert the solar panel > power to 50/60Hz AC, into the Leaf, then to DC to charge the batteries > again! I am thinking it would be better to have solar always below 360V > (lowest leaf battery voltage) and a boost converter or isolated topology to > charge into the Chardemo port. Boost would mean it does not have to handle > all the power, but I am a bit nervious of having the leaf battery > galvanically connected to the panels! Electronics would be very similar to a > Chardemo charger I guess, will have to have can bus etc, but then you can do > all kinds of other things that will help, like set the charge level to > anything you like, V to G, etc too. > > > >> On 15-Aug-19 6:33 AM, paul dove via EV wrote: >> I mean from the solar panels, disabling them. >> >> >> On Wednesday, August 14, 2019, 12:50:01 AM CDT, Cor van de Water via >> EV <ev@lists.evdl.org> wrote: >> >> All grid tie central inverters (so, not the micro inverters) take input >> voltage above 400V so they can direct switch the AC output without >> transformers. Input is typically up to 1000V these days. >> I plan on installing solar strings of at least 400V so that I can always >> charge my EVs by direct wiring the panels to the battery, in case there is >> no grid and I need energy in my EV. >> I also have a large UPS that is intended to run with 2x 192V lead-acid >> batteries (it is an older model double conversion UPS) so I am planning to >> connect it to a Leaf pack with center tap so it can both charge the pack >> as well as island like any UPS to feed any critical loads in the house. I >> need to see if it has the power saving setting where it is not always >> double converting (wasting power) and just keeps the battery charged, but >> feeds the incoming power through until there is a power loss, then it >> instantly starts converting battery power to output without even losing >> the output. >> With such a setup, it would be possible to use solar in 2 ways: DC only to >> directly charge the UPS batteries (but needs overcharge protection and >> waste power as soon as batteries are full) or the usual string inverter >> generating AC to feed back into the grid and independently run the UPS to >> keep the batteries charged and generate uninterrupted power. Only drawback >> is that during an outage, the solar inverter trips and does not generate >> power, but this should happen only rarely. >> >> Cor. >> >> Sent from Mail for Windows 10 >> >> From: Robert Bruninga via EV >> Sent: Tuesday, August 13, 2019 7:06 PM >> To: Electric Vehicle Discussion List >> Cc: Robert Bruninga; jkenny23 >> Subject: Re: [EVDL] FW: PowerWheels idea (Vehicle-to-home) >> >> Thaniks. Yes, I got it wrong. I updated the web page . >> >> So now a use leaf is about 2.3 power walls but a bit over half the price. >> Thanks for the tip. >> >> bob >> >> -----Original Message----- >> From: EV <ev-boun...@lists.evdl.org> On Behalf Of jkenny23 via EV >> Sent: Tuesday, August 13, 2019 6:31 PM >> To: ev@lists.evdl.org >> Cc: jkenny23 <jkenn...@gmail.com> >> Subject: Re: [EVDL] FW: PowerWheels idea (Vehicle-to-home) >> >> Minor correction, your 3 year old Leaf is only 30kWH max (with less >> actually usable, limited by on-board BMS). It would only take a bit of >> clever reverse engineering to make use of ChaDeMo capable Leafs by >> controlling the contactor to close and feeding a high voltage solar >> grid tie inverter (I believe there are models that can use up to 400V >> already). >> Then you could use up to 20kW comfortably. >> >> -- >> Sent from: >> http://electric-vehicle-discussion-list.413529.n4.nabble.com/ >> _______________________________________________ >> 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) >> >> >> -------------- next part -------------- An HTML attachment was >> scrubbed... >> URL: >> <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190813/7a >> d6c2b3/attachment.html> >> _______________________________________________ >> 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) >> >> >> -------------- next part -------------- An HTML attachment was >> scrubbed... >> URL: >> <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190814/43 >> ed784c/attachment.html> >> _______________________________________________ >> 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) > _______________________________________________ > 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)
