I don't see how this is the issue. They can't even maximize the 400V architecture they currently have. 800V may result in a higher instantaneous peak at 10% SOC but it's still going to plummet immediately if you look at it wrong.
I don't understand this logic. 800V isn't just some magical "go faster" charging hack. Kilowatts are kilowatts at the end of the day; if you can't dissipate the heat generated by 200kW of charging for more than a few minutes, you sure as hell won't be able to dissipate 350kW for longer.
800V generates less heat at a given kW, because it takes lower amps to reach it. Amperage is what generates the heat.
Take an air hose and push X-amount of air through it and see what the heat is like. Now double the hose diameter and see how warm it gets.
This isn't strictly correct, but you're definitely right that higher voltage architectures usually generate less heat. We're not talking about a linear relationship here, however. Changing to 800V will not fix the charge rate. Cooling and chemistry fixes the charge rate.
Ok except I get 200-250kw charge rate and can add 60kwh in about 18 minutes. Maybe I don’t understand so it seems like magic lol. But it’s fast as hell.
I understand how clean and satisfying of a metaphor this is, but it's neither relevant nor accurate enough to matter whatsoever. You're talking about transferring power through a conduit. If the charge cable was the limitation here, I'd absolutely agree; crank up the voltage and you've got a winner.
You do not get 250kW. The peak charge rate under ideal conditions is less than 220kW. That's starting with an 80F battery at <10%. This isn't even true for max packs as the entire thread you're replying to is talking about. Did you even watch the video?
