Nah, just use higher voltage to push more juice over the same size wires
Jode@midwest.social 7 months ago
Don’t get me wrong, I’m all for this but I remember reading a comment on here a while back saying that to get that kind of energy jammed into a battery that quickly you’d need a cable as thick as a telephone pole to keep it from glowing like a toaster coil.
Pretzilla@lemmy.world 7 months ago
abhibeckert@lemmy.world 7 months ago
Nah that’s bullshit. Go have a look at your nearest interstate powerilne. They transfer enough power to power, well, an entire state or at least a significant percentage of a state, and a lot of them are as thin as 1cm (less than half an inch).
Jode@midwest.social 7 months ago
Yes but that’s 10s of thousand volts AC power at a reasonable current. We’re talking DC at a couple hundred volts and an extremely high current.
abhibeckert@lemmy.world 7 months ago
The currents for an interstate highway are “extremely high”. The currents to quickly charge an EV just aren’t that bad.
There are already 350kW DC fast charge systems in deployment right now - they’re commonly used for heavy vehicles (busses, large trucks, etc) and the cable is about as thick as the cable we’re all used to for pumping gas.
Smaller EVs have a 24kWh battery - at 350kW you could charge that (to 80%, after which it needs to slow down) in something like two minutes.