Fear Mongering About Range Anxiety Has To Stop — CT Governor Calls Out EV Opponents::Several state governors are fighting fear mongering as they attempt to reduce transportation emissions in their states.
Fear Mongering About Range Anxiety Has To Stop — CT Governor Calls Out EV Opponents::Several state governors are fighting fear mongering as they attempt to reduce transportation emissions in their states.
Serious Question: Why can’t we just have towable generators so EVs can go from an electric car to a Plugin Hybrid for road trips?
Generators aren’t very expensive relatively speaking.
Yet I’ve never heard not seen this anywhere, and seems like a very easy solution to range anxiety.
An average EV consumes .32 kilowatt hours of electricity per mile. If you are driving 60 miles per hour, that means you are spending 19.2 kilowatt hours of electricity every hour. So you need a generator that’s at least 19.2 kilowatt. Tack on some more because you are now towing the extra weight of a generator and because you are probably wanting to go 70mph and let’s just say you need 25 kilowatts. This is what a towable 25kw generator looks like. It costs $22k. I’m sure cheaper ones could be made, but even at $10k, is it worth it? Just buy some plane tickets or rent a gas car for a week or take a train.
https://herogenerators.com/products/25-kw-caterpillar-towable-diesel-generator
I think it’s because someone who takes enough Road trips to use something like that would properly just get a regular plug in hybrid. That being said, this might be coming soon for ev trucks actually. The dodge ram ev is going to have a gas powered range extender, and I believe ford has patented a bed mounted version for its ev truck.
Safety as well. Generators are not built for all the regulations the DOT has. It’s a different thing to transport a generator and then actually having it fixed to a vehicle as a usable entity.
It’s a massive waste of energy. What does a good diesel generator have, like 20% energy efficiency? Not taking into account that you’re wasting a lot energy for towing it.
It would also have to be massive.
Why would It be diesel?
Besides what exactly is the alternative if there is no charging location on the way?
Just spend $150/day to rent a car in addition to all other travel expenses?
Probably be more efficient to just have a towable battery you charge ahead of time.
Lets work through some back-of-the-napkin math here.
Lets say the average speed you’re looking to take on your road trip is 50MPH. For that discharge rate you’d need to be able to charge at 50MPH to keep up. That would put you at a charging requirement of 50kw.
Here is a picture of a 50kw towable generator:
This isn’t even any of the additional gear needed for DC rectification and power management needed to interface with NACS or CCS.
You can see why this idea doesn’t really work then.
I’m going to need to see your work for the 50mph to 50kw conversion.
1 Kw per mph sounds pretty bad. I would’ve thought electric cars are more efficient than that.
Also one is a force while the other is a speed. You’d need a lot of assumptions to go from one number to another single number.
Googling a rough average returned 0.346 kwh/mile for electric cars between 2000 and 2022 (wide range, im aware). Traveling at 50MPH, you go 50 miles in 1 hour (assume you’re already going 50, and stay at that speed). So you’d use [0.346KWh/mile] *[50 miles/hour] = [17.3 KW] per hour @ 50 MPH
One of the problems is that air resistance increases at a squared rate vs velocity, so that average is only really accurate at one specific speed (which tbf might actually be 50mph). But this is a lot more accurate than just replacing “mph” with “kw” lol.
My biggest red flag was the picture of a commercial-grade-looking generator when plug in hybrids can fit the generator plus electric motor, battery, AC, and all the other stuff needed under the hood.