Test charging stop for large EV’s, busses, trucks, mohos.

JRscooby wrote:

time2roll wrote:
While the en-route charging shown in the video is great.... The real benefit will be having the charging station at the destination loading dock to charge where the truck is already stopped to unload. Especially for fleet vehicles such as grocery stores. Will increase the incentive to get solar up on the store roof too.

I will say I know nothing about EVs other than I like the idea. That said many times in my life I have seen a battery that was fully charged hooked to a mostly discharged one with large cables and in a very short time the voltage in the discharged battery make a big jump up.
Now to go into theory, or really show my ignorance. Would it be possible to build a stationary battery bank, with say twice the capacity of the battery of the EV, and such that the fully charged voltage was 10% higher than full charge on EV? Then let solar panels on the roof charge that battery. The EV, pulls in with a low battery. Large cables, or better buss bars, join the batteries. Kick in a relay, wouldn't that charge the EV to full charge in a short time? If the EV was to set overnight, the cables could be smaller, charge slower.

I’m sure it would work but it would be an inefficient use of 50 percent of the capacity of the storage battery. This is why they use inverters and rectifiers at V3 Superchargers so they can more efficiently utilize the capacity of the on site storage. The on site storage allows for a much smaller grid feed to the Supercharger as it acts as a peaker during peak charge hours. Friday nights, Sunday mornings, long weekends, etc.