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Thread: Electric vehicles - general thoughts / comments / advances

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    Default Electric vehicles - general thoughts / comments / advances



    From Paul's "drop in" electric "V-8 lookalike" conversion thread I commented upon range and "refill" to full range downtime.

    This video showed up today and one of the items was a sub ten minute swap/refill for full range. Who knows if it'll take hold - though interesting to see.


    Energy Storage Breakthrough - Solid Hydrogen Explained

    www.youtube.com/watch?v=U7CCq4oBgw4


    .

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    Paul (3 Weeks Ago)

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    Default Re: Electric vehicles - general thoughts / comments / advances



    When the range gets to around 250-300 miles and there's either a factory or aftermarket solar roof charging option that really works I want one of these. I'm sure they'll be AWD or 4WD by then too.


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    Default Re: Electric vehicles - general thoughts / comments / advances



    Would solar charging ever be realistic? Even if tomorrow someone came out with 100% efficient solar cells, that's what, 4x what you can get today? Doesn't seem like enough to me. Or are you thinking some origami type thing that folds out to a much larger area than the actual roof?

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    Default Re: Electric vehicles - general thoughts / comments / advances



    Power has to come from somewhere...


    Kremmerer WY (Southwest Wyoming)

    Bill Gatesí nuclear power company selects a site for its first reactor

    First-of-its-kind reactor to be built in Wyoming with heavy Dept. of Energy backing.

    https://arstechnica.com/science/2021...first-reactor/


    It'll be curious how the project comes along.

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    Trevor? (1 Week Ago)

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    Default Re: Electric vehicles - general thoughts / comments / advances



    speedkills previously posted:
    "Would solar charging ever be realistic? Even if tomorrow someone came out with 100% efficient solar cells, that's what, 4x what you can get today? Doesn't seem like enough to me. Or are you thinking some origami type thing that folds out to a much larger area than the actual roof?"

    I don't really know enough about the tech to answer that, but I'd like to be able to drive a couple of hundred miles on a charge, and if I parked at a campsite or trailhead or anywhere really for the day I'd like to add some charge, maybe 20-30 miles. That's just what I'd like, I don't know how realistic it is. I'd guess that as the vehicles evolve over the next few years range and solar charging will improve. If there is a big leap in battery tech and vehicles can store 400 or more miles on a charge then solar wouldn't be so important. It's interesting to see it happen.

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    Default Re: Electric vehicles - general thoughts / comments / advances



    The horizontal surfaces of an automobile (not van) can hold two, maybe three, 100 watt solar panels. Let's way two. At MAX conversion, with current technology, one could get 200 watts of power. Max sunlight, for a non-sun-tracking panel (high noon) is only a couple hours (?) before tapering off, quickly I hear.

    Let's guess.

    High Noon (two hour time duration) = 400 watts
    An hour at each side of High Noon let's say 1/2 power = 200 watts
    Much of the rest of the sunlit day, let's say 100 watts

    Those guestimate numbers give us 700 watts of charge per full sun day.

    from...

    https://www.nissanusa.com/interactiv...ing/index.html

    62 kWh Battery:
    EPA range up to 226 miles on Nissan LEAF S PLUS[2]
    Approx. 11.5 hours = full charge

    62 kWh battery gives 226 miles and we're going to add 0.7kW (700 watts) into the pack. How many miles might that give us?
    62,000 watts / 226 miles = 274.3 watts per mile. Our 700 watts / day will give us 2.6 miles / day - with current technology and some off the cuff numbers.

    If I recall hearing, current cell tech runs with approx 25% conversion efficiency. If we double that efficiency we'll get 5 miles per day.

    Now, a side effect of having solar panels on the vehicle - weight. Would the weight of the panels negate the max charge benefit? I don't know though I am curious.

    EDIT: I seem to recall the local youtube channel (TFL???) that evaluated the all electric ?jeep? - their takeaway was that offroad range was significantly less than highway range (I hoped it would have been close to highway range). 0.02

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    speedkills (1 Week Ago)

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    Default Re: Electric vehicles - general thoughts / comments / advances



    Those are around the numbers I was thinking of as well, thanks for writing them down Jim. I think battery technology will increase density but the sun just doesn't put out enough power for solar to do much besides maybe run the fan to keep your car cool in the sun. Most realistic option I can see happening in the next decade for recharging while camping would be some sort of fuel cell tech but nothing I know of at this point is anywhere near practical for that yet. But still, 3-400 mile range and I'd be happy for most stuff. I rarely have only one vehicle so I'm not too worried about the edge cases, I'd just take a different rig for those times.

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    Default Re: Electric vehicles - general thoughts / comments / advances



    Carbon body 1000hp McLaren vs. stock Tesla Plaid. First race @ 9:25, second @ 10:45, third @ 12.25.


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    Default Re: Electric vehicles - general thoughts / comments / advances



    Nothing happens in a vacuum.


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