Guru
Joined: 15/07/2006
Location: AustraliaPosts: 676
| Posted: 10:16am 02 Aug 2023 |
Pete,
Commercial EV will be very hard to charge direct from solar. Most are running 300 plus volts. The bigger, heavier vehicles are much higher. F150, Rivian and Cyber Truck all run 800v. An inverter to run a wall outlet charger will be the only option.
You also need to consider how much power you will use and have to put back in. See the thread on EV consumption https://www.thebackshed.com/forum/ViewTopic.php?FID=15&TID=15357
My EV's are 144v nominal.
In EV Hilux I have the main pack in 3 sections of 48v nominal. Each of the 3 sections are connected in series to make the 144v.
I have 3 separate solar systems of 48v nominal. Approx 4kW each.
On one side of the changeover switch, all 3 solar systems are connected in parallel when charging my house batteries.
When charging EV Hilux, the other side of the changeover switch connect each solar system to it's own section of the main pack. The voltage of each pack can get out of balance, but when all done they are all the same voltage. They don't reach full at the same time. Charging in good sun, this can charge around 100km range in a couple of hours.
Ok so then to charge T-Rev direct from the solar....... I connect the 3 solar systems to EV Hilux and connect the 2 vehicle packs together in parallel.
I can also charge either EV Hilux or T-Rev from the wall outlet powered from the inverter, connected to the house solar battery.
Another possibility, if your driving distance is not to high, you can charge an EV at a public outlet, each time your out shopping. I have heard a number of people doing this. They never charge at home. There are still some shopping centers offer free charging.