It is not actually that big, last year I was able to presence a Model 3 tear down, from a very early VIN and I found that the onboard harger was already hardware enable to perform that.
The electronic design was made to work worldwide, 3 or 2 phase, 120/240vac and with a very simple architecture that allows the charger take power back from the HV battery, step it down using same step-up transformer used to charge, convert it into a sine wave and send it back to the grid or work like an island. Converting the car work like a stationary energy storage system. I don’t know why they haven’t released that feature yet to public, maybe waiting the right moment, waiting from the software team (car updates, app release, energy management Inet platform, etc.) or maybe they just made a few cars with those and forgot about that, which I don’t think so. The Model 3 charger architecture I saw was based on a similar design like the one on this page: https://powerpulse.net/6-6-kw-bi-directional-ev-on-board-charger-reference-design/ (After a quick search on my phone) So just changing a few traditional components on a standard charger you can make it bi-directional. And it’s up to the control side where it becomes the challenging part. Sent from my iPhone > On Jul 27, 2019, at 7:22 PM, Alan Arrison via EV <[email protected]> wrote: > > I had been wondering why something like this hadn't been done yet. > > However, it is by no means a done deal. They have a big problem to solve. > They would have to work with all the automakers to have the vehicles allow > access to the battery through the charge port and allow power to flow out of > the battery. > > Good luck with that. > > Al > >> On 7/27/2019 9:33 AM, Willie via EV wrote: >> Anyone know anything about this: >> https://cleantechnica.com/2019/07/26/wallbox-launches-in-us-china-adds-residential-bi-directional-dc-fast-charger/ >> >> _______________________________________________ >> 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/20190728/c488808f/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)
