Re: [EVDL] Create an "EV City" Re: Yet another lithium battery breakthrough
People have shown that they don't really want limited range vehicles for the
most part, and a 20 mile range just won't cut it, even if you can swap or
recharge quickly. It's also not necessary to cripple a vehicle with such a
short range. If 200 mile range with a 60 second recharge is not realistic, a
100 mile range with a 5 minute recharge is, and much more useful and
marketable to the public. I still think we are going to see continuing
advancements in battery capacity and pricing such that swapping and fast
charging will be less and less of an issue. Personally a 50 mile range EV
would handle 99% of my driving needs even without fast charging.
[quote]Jack Murray wrote:
> It is true, that a 60-second charge for a 200-mile range EV is not
> realistic. A 20 mile range is 10 times less.
> A car with only 20 mile range battery weighs significantly less, and thus
> actually needs an even smaller battery (Tesla battery is 900 lbs), maybe
> 2x, 5x smaller, and in fact a lighter car in general, so let's say 10x,
> so 100 times less energy to xmit. And maybe 2-3 minutes is OK, that is
> 2-3x less.
> We've reduced it by 300 times, so your 40Kvolts at 70amps, would become
> 500 volts and 20 amps, which is easy. Make it 10x more, 1000volts at
> 100amps, no problem.
> My view is some smallish city should build such a prototype environment.
> Put high-power charge stations in a 10-mile range grid, and build a fleet
> of small EVs. I'm familiar with Sacramento, it's may 30 miles square,
> they have a fleet of cars used by building inspectors that cruise around
> town doing inspections all day every day. Let them use these EVs to do
> their work.
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