The amperage to do that is insane, either you’re dumping power from town sized feeder lines (seriously limiting where you can place those chargers) or you are charging capacitors to charge the car (wasting energy and limiting how often you can charge a car at those speeds)
They use battery banks, so the system can charge slowly without overloading the grid and charge the car quickly. But the user will pay more for charging that fast. I’d expect to have much more slower chargers and few of the fast chargers. Most supermarkets these days have a charger these days, so if you’re not in a rush you can just shop and charge.
Was about to comment exactly this. Capacitors just can’t store the joules needed in any reasonable amount. There is some conversion loss but lithium batteries usually have a 95% or better cycle efficiency.
The amperage to do that is insane, either you’re dumping power from town sized feeder lines (seriously limiting where you can place those chargers) or you are charging capacitors to charge the car (wasting energy and limiting how often you can charge a car at those speeds)
They use battery banks, so the system can charge slowly without overloading the grid and charge the car quickly. But the user will pay more for charging that fast. I’d expect to have much more slower chargers and few of the fast chargers. Most supermarkets these days have a charger these days, so if you’re not in a rush you can just shop and charge.
Was about to comment exactly this. Capacitors just can’t store the joules needed in any reasonable amount. There is some conversion loss but lithium batteries usually have a 95% or better cycle efficiency.
Wasting energy how exactly? Idk how efficient capacitors are in general.
Or they crank the volts to keep amps down.