Waiting for Superbatteries They are still a long way from matching the energy density of liquid fue

That is never what I said.

As to be expected, when somebody can not tell the difference between a fantasy and reality.

 

Yes, it is.

There is a vast difference between loading 10 tons of liquid fuel, and 10 tons of batteries.

The very thought that you even brought this up as an argument tells me all I need to know really on your thought processes.

And like another in here, you do not actually discuss anything of particular interest. You just vomit up the first thing to come to your mind, with absolutely no thought behind it.

Oh, and that "mid-air refueling" is not automatic. It takes a lot of training with at least 5 highly trained individuals to do it. It is also one of the most dangerous things most aircrews do on a regular basis other than landing.

Quite literally, what you said is like if I went "Well, my aunt can play soccer, therefore your sister can drive NASCAR".

 

LoL ok.

 

Yes, a huge difference. Changing a stationary battery pack on the ground is vastly easier than refuelling mid air

 

In the context of EV vs. ICE there is a significant factor being overlooked.

Energy density of gasoline has to be used by an ICE, and ICE engines are horribly and unfixably inefficient.

I'm really disappointed in that IEEE article for so strongly fixating on energy density while blissfully ignoring the full use pathway.

Plus, at the bottom the article includes a link to an article about how there might possibly be electric airplanes. But, electric airplanes exist TODAY. In fact, there is an electric passenger plane that is going through certification for commercial travel use.

What the HELL happened to the IEEE? My IEEE dad would be seriously disappointed were he living.

 

Apparently what happened to IEEE is that they understand math.

A gasoline engine is about 33% thermally efficient and a diesel engine is about 45% thermally efficient (but don't take my word for it, Google it for yourself). So gasoline has 9600 Wh/L and diesel has somewhere near 10,700 Wh/L.

The absolute best battery in current production is 1150 Wh/L. So some simple rough math (you might want to try it sometime) says even with thermally losses factored in, you're still roughly 3 to 4 times better than a battery.

And that's not even counting the losses going from the engine that generates it to the battery to charge it. Then batteries really suck.

Don't worry about your Dad. He'd obviously get it.

 

Now all you need to do is find a source.

 

It is?

Sorry, I am calling total bullshit on that. How about giving us a reference showing how long it takes to replace a battery in an EV?

Because most I have talked to say it is somewhere from 5 to 10 hours.

Remember, replacing the batteries in an EV is nowhere near the same as that in your standard car.

Once again, you are doing absolutely no research, just saying what you believe with absolutely no facts or knowledge in what you are talking about at all.

And let me guess, you also think replacing the transmission in an EV is no different than in a standard car, right?

 

I don't know of any company that has ideas of replacing batteries as a means of fueling.

There is an incredibly HUGE effort in increasing battery capacity and decreasing charge time.

And, yes, there is no transmission in an EV, so zero work! You win on that one for sure!

 

I've been an automotive powertrain engineer for 35 years. Get off your butt and find your own sources.

And you might want to start by reading the IEEE piece.

 

You are making comments about EV efficiency.

And, you are absolutely NOT aware of that field.

 

They find it easier to simply make a stupid claim based on absolutely nothing but their own beliefs.

While I have nowhere near that background, I did learn something while I was attending UTI. And that is one of the biggest specialties right now is in replacing EV batteries because the labor rates and hours billed are insane. One of our instructors was doing that on weekends, and one day replacing EV batteries he said earned him almost as much as being an instructor 5 days a week. The replacement batteries cost on average over $10,000, the labor cost normally starts in the range of $2,500+. And that is just for a car, trucks are so new there is no real data for that yet.

Oh, and a basic engineering fact. They have to be lowered in via crane unless they are individually placed in. That is simply engineering standards. Batteries have to be completely enclosed inside the body of the vehicle, that is a law. They can not just make them to "drop out". They can not drop out, or slide out. They can only be lifted out, as they reside inside the vehicle. Think of it like a bathtub. They are placed inside for very obvious safety reasons. Imagine the disaster if they were "lifted in" as some want to see, and a support failed and five tons of batteries dropped onto the freeway.

Most of those in here, the most they have probably done is replace the battery in their car. And they can not comprehend why this would be any different. Just the stupid things they keep saying screams that they have absolutely no idea of what they are talking about.

 

What's stupid is the continued discussion down this ridiculous direction.

No EV manufacturer is working on ways to replace batteries as a method of refueling.

They ARE working on batteries lasting for a very long time - as in 300,000 to 500,000 miles in a Tesla.

 

And somehow you are?

That's just a metric butt load of hooey.

 

Now all you really need to do is find a source.

 

Oh dear. Not only is it possible to automatically swap batteries but it's already happening

https://www.google.com/url?sa=t&sou...gQFnoECGoQAQ&usg=AOvVaw0pWC-MRuHlQyWgROawxx0t

. From parking up to pulling out, the battery swap takes less than six minutes.

 

NIO battery swap: faster than any EV rapid charger! – DrivingElectric



Notice it is exactly as what I suggested could be done LOL. And another advantage of this brand is that for in-town driving you can choose a low power battery pack (which means a lighter car = greater range) OR if going for a long ride swap for a higher power rating battery pack. IS this brand of electric car going to rival Tesla, making the equivalent of the VHS or Betamax TV recorder

But course, automatic battery swapping is impossible I have been told

 

And nobody's answered my original question which is where this whole nonsense started. How much does a Tesla semi battery weigh?

By the way, that's being done in China and nowhere else. We'll see if it makes it to the US with some of the toughest regulatory requirements in the world and a very strong culture of litigation.

 

It's available now in Europe, notably Norway as described in the link which has some of the toughest regulations

 

Read it again. It's being tested in Europe. Hasn't gone full production yet.

 

The video show the actual station in Norway. The presenter even states that he will have to give way to any customers

Edit: 10 stations are fully operable in Europe. By the end of 2023, Nio plans to have 120 such stations across Europe.

 

Great. Now, do you know how big the battery is in a Tesla semi?

 

LOL You're still stuck on that and ignoring what you said was impossible. Notice that no cranes are involved in that battery swap station

 

We'll see when they actually get around to swapping a Tesla semi battery, won't we?

 

In China. Which has very different highway safety laws.