this post was submitted on 04 Jul 2023
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Technology
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Oh fuck off with that charging times.
Assuming this battery will be 150kwh (which is a conservative estimate for such a range)
Let's ignore even heat loss So you need to 150kwh in 10 minutes, wish equals to 900kw of immediate charging speed.
Now imagine 20 of those power inputs connecting/disconnecting on a local power management substation.
Not fucking gonna happen.
Basically every other fast charge time is quoted from 0-80% or 20-80%, something like that. So it's probably capable of around 600kw charging. I don't think we have chargers that fast, but maybe you could plug in 2x 350kw chargers in at the same time, lol
Even if the power load on the grid was doable, heat dissipation is also a huge problem. Current DC fast chargers max out at 350 kW (in theory, my car supports charging at that rate but the best I've seen in real life is around 190kW), and the liquid-cooled cables are already heavy/bulky enough to give some women and older folks a hard time. I can't imagine a practical way to handle 2 or 3 times the current without making the cables something like 6 inches in diameter and weighing a couple hundred pounds.
Tbh cable heat dissipation is not really a problem if you increase battery voltage, which those solid state batteries have theorically no problem doing. To keep current cable we would need 3200v batterie, which I could see happening.