this post was submitted on 20 Feb 2025
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Why would it be ridiculous for EV owners to charge cars away from home or work? l'd say that it's pretty necessary for long-distance trips.
EDIT:
Long distance power transmission is normally done with aluminum lines, rather than copper.
https://www.anixter.com/en_au/resources/literature/wire-wisdom/copper-vs-aluminum-conductors.html
Resistance is a function of the material's conductivity and the cross-sectional area of a cable. If aluminum has 61% the conductivity of copper, then one needs 1÷0.61=1.63 times the cross-sectional area for an aluminum cable to have the same resistance. That's a radius 1.63^0.5 = 1.28 times the radius of an equivalent copper cable.
So you only need an aluminum cable with a radius 28% larger to achieve the same overall resistance.
In the case of the EV charging cables, flexibility is at a premium, and increasing the radius decreases that. But my guess is that it's probably within the range of acceptability to use a bulkier aluminum cable, if need be.
EDIT2: I was also going to suggest liquid-cooled cables, which electric arc furnaces use for their power busses. Apparently Tesla already tried using experimental liquid-cooled cables, a decade back:
https://electrek.co/2016/07/21/tesla-ends-its-thin-liquid-cooled-supercharger-wire-experiment-in-mountain-view-but-the-tech-lives-on/
That would have been liquid-cooled copper, but one could presumably also do liquid-cooled aluminum. That's another option, if one wants to keep heat under control with higher resistance from a cable. Probably some extra cost for the cooling system, and there's some extra waste of energy as conversion to heat that way, but I doubt that it'd make EV charging impractical, were that what was required to deal with people stealing copper.
Battery powered EVs should not be used for long-distance trips.
I mean...I agree with you that EVs are relatively-poorly-suited compared to ICEs for long distance trips, and if I had both a gasoline-powered and electricity-powered vehicle, I'd use the gasoline-powered one for a long-distance trip... but not everyone is going to own both. It's hardly reasonable to say "well, people who own EVs just can't travel long distances".
Take a bus or a train. Public transit is of course the real solution. Transitioning from ICE personal vehicles to personal BEVs doesn't really solve much and arguably creates more problems.