For direct DC-DC charging you'll need to convince the car that it's connected to a Supercharger (or CCS1 via the adapter), causing the vehicle to throw the internal switch and directly connect the charge port to the battery. This is followed by continuous communication so the car won't throw a fault and disconnect.
https://github.com/uhi22/pyPLC
https://www.heliox-energy.com/blog/dc-charging-a-complete-gu...
https://openecu.com/case_study/interface-evse-with-combined-...
Beta2 is made with 3d printed parts, carbon fiber, and aluminum. I also have to keep EVERYTHING (including the roof rack and panels) less than 165. So the 4000 watt version is being built now. The 200 watt panels are about 30x60 inches, the 440 watt ones are 47x82 inches -- so it still fits on the roof. However when the 9 panels are opened the overall device goes outside of the shadow of the car.
The 4000 watt model is as if you opened your doors... it would extend that far.
Did you research any options for lighter weight or better efficiency panels? Are there any multijunction out there yet?
I wonder if a chinese fan design would be useful.
Really cool project!
11.5kw through the charge port, 9.6kw through the outlets (120/240v).
With some refinement and contouring to the body of the vehicle, this could make for a fully-untethered city taxi.
It would take approximately 2.5 days to fully charge a Tesla Model 3, which has a 50 kWh battery, using a 4,000-watt solar panel array under optimal conditions (assuming the solar panels operate at their maximum output for 5 hours per day). Keep in mind this is a theoretical estimate and real-world factors could affect the actual charging time.
