Wireless Charging for the Tesla

Why can't be build electric cars out of aluminum and composite materials, place a coil under the whole car and then put magnets in the roads that are spaced out for optimal charging while doing 60mph?
 
I presume that blue light has nothing to do with the actual charging device lol I like how the interview laughs that it will be mainstream in 100 years. This is a great way for parking garages and cities to start charging even more insane prices for parking. Cities will have to pay for disposal of those not so environmentally friendly car batteries one way or another, I guess this is how.
 
thefordmccord said:
Why can't be build electric cars out of aluminum and composite materials, place a coil under the whole car and then put magnets in the roads that are spaced out for optimal charging while doing 60mph?
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1) price of installation

2) price to upkeep system

3) make system somewhat secure and stable
 
How lazy can you get? How much energy does it take to plug your car in when you park it in your garage. By their very nature, wireless charging systems are extremely in-efficient. If you're lucky, someday they might be around 80% efficient. Considering that electric cars will represent a large percentage of a normal home's power consumption, that's a LOT of wasted power. At that point, you might as well just stick with a gas powered car since you've just eliminated much, or all, of the fuel savings and you'd regain the advantage of instant "charging" when you re-fuel.
 
I'm not sure about the Tesla, but the Volt takes up to 16 hours to charge on 120v and up to 8 hours at 220v. Given the inefficiencies of an induction charging system, these times would increase significantly. Cool, but not practical...
 
I have to question the efficiency of this. How much does it cost for a full charge from this vs charging with wires?
 
I'm guessing it's not okay for the cats or dogs to sleep under that car in the garage...
 
What would happen to the poor kitty when she walks through the charging field?
 
I imagine it now, strips of roadway throughout the US with these wireless charging areas, akin to the turbo boosts in games like Mario Kart give you a boost of power as you drive through :D
 
Can we please make electric vehicles affordable first before we start working on "exotic" ways of charging them?
 
This isn’t new. The Saturn EV1 (1990’s) was inductively charged, though you did have to push a paddle into a slot. Inductive charging IS inefficient, but an argument can be made that it is safer. No potentially exposed terminals and less likely to draw an electrical arc. Regardless, I still vote direct connect for better efficiency.
 
I do not think the US has the credit to borrow that much money. And who will lend us that much money? China?
 
thefordmccord said:
Why can't be build electric cars out of aluminum and composite materials, place a coil under the whole car and then put magnets in the roads that are spaced out for optimal charging while doing 60mph?
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This idea is would not work and only shorten the range of electrice vehicles as the magnets would provide a resistance to the forward motion of the car. There would a current induced into to coil to charge the battery, but it would not be enough to make up for the lost energy cause by the car moving over the magnet. If it did work it would violate conservation of energy laws.

The only way for it to work is if electro magnets were used on the road. I'm thinking this sould be a bad idea though. But I'm no expert. :)
 
This is kinda of cool, but i would love to see how these cars hold up in a canadian winter. What affect will the climate have on the battery and charging efficiency.
 
nobody_here said:
and create tens of thousands much needed jobs

we need one of two things for the economy, a real war or something on the scale of the original Interstate/highway system
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The problem with government projects is they always have to take it from somewhere first. If they barrow it they are consuming future possibilities today, if they print it they devalue the currency/inflation, if they tax it they remove it from productive efforts first.

What the economy needs is for the government to quit d!cking with it so it can reorganize. Cheap money policy is just driving more malinvestment's.
 
OregonLAN said:
I'm not sure about the Tesla, but the Volt takes up to 16 hours to charge on 120v and up to 8 hours at 220v. Given the inefficiencies of an induction charging system, these times would increase significantly. Cool, but not practical...
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He said in the video that it takes the same acount of time to charge as it would if plugged in.
 
AcerbicWit said:
This isn’t new. The Saturn EV1 (1990’s) was inductively charged, though you did have to push a paddle into a slot. Inductive charging IS inefficient, but an argument can be made that it is safer. No potentially exposed terminals and less likely to draw an electrical arc. Regardless, I still vote direct connect for better efficiency.
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The EV1's induction charge wasn't as inefficient I believe. I'm operating on memory of E-M Physics, but the powerloss falls off as a function of Distance^2, and the EV1 paddle had a near zero Distance. So it was a lot safer, without much drawback from lost power via induction charging.

I think people are already starting to look at what could have become out of the EV1 and lamenting GM being retarded. That car was a decade+ ahead of it's time. Imagine what could have been if development had continued.
 
The tech will improve as time passes and wireless charging will be the dominant method in time.
 
so what happens when you stick your hand between the 2 charging places, or for that matter your wet cat or dog or tool gets between the 2? I'm sure nothing, but still lol
 
Why should I have to spend 6 digits to own a car like this? I'll never spend that kind of money to buy gasoline for my car/truck.
 
drescherjm said:
I do not think the US has the credit to borrow that much money. And who will lend us that much money? China?
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China would. They'd just be making the money right back through manufacturing the very batteries and charging stations for this crap. Paying them back would just be double dipping, or something like that.
 
Zumino Zufeilon said:
The EV1's induction charge wasn't as inefficient I believe. I'm operating on memory of E-M Physics, but the powerloss falls off as a function of Distance^2, and the EV1 paddle had a near zero Distance. So it was a lot safer, without much drawback from lost power via induction charging.

I think people are already starting to look at what could have become out of the EV1 and lamenting GM being retarded. That car was a decade+ ahead of it's time. Imagine what could have been if development had continued.
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Lack luster interest from investors and general populace, when it first came out it had a warm responce, not what GM was hoping for. Plus the amount of money it would cost to re-produce it back then, they just scrapped it in general. I think right now would be the perfect time to bring it back, but like I said at the time it had no interest from investors as there seemed to be no interest from the general populace.
 
dderidex said:
I'm guessing it's not okay for the cats or dogs to sleep under that car in the garage...
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Terry Olaes said:
What would happen to the poor kitty when she walks through the charging field?
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Trimlock said:
a gigantic static fur ball
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thyshallsmite said:
so what happens when you stick your hand between the 2 charging places, or for that matter your wet cat or dog or tool gets between the 2? I'm sure nothing, but still lol
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drescherjm said:
This would cost trillions of dollars.
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The lack of physics knowledge here disappoints me.

This technology isn't new, it's just incredibly inefficient so most people/companies dismiss it as a possibility. It's incredibly cheap to manufacture, it's just a coil of wire making a magnetic field, utilizing a principle called resonant inductive coupling.

To get any electrical current out of the field, a similar (read: identical) coil must resonate in the field. The energy being 'broadcasted' by the emitter could fill an entire room, though it's strength decays over distance. The downside of this is that all energy that is not caught by the receiving device is lost in the transmission.

And provided you're not holding a resonate coil, you could lay between the car and the device indefinitely and be perfectly fine.
 
Crispy002 said:
The lack of physics knowledge here disappoints me.
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Considering what you quoted for the most part were people attempting to be funny i doubt you will get much sympathy for being disapointed.

Also makingt his US wide on every free way regardless if its just a coil will cost trillions. Who cares if the coils themselves are cheap, thats not the #1 cost, the number 1 cost will be the physical construction of applying these onto an electrical grid through concrete and asphalt. Apply all of that to how many miles of free-way road (assuming this ONLY goes to free ways) and trillions of dollars will be a small price.
 
Trimlock said:
Considering what you quoted for the most part were people attempting to be funny i doubt you will get much sympathy for being disapointed.
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Your post may have been a joke, the others...perhaps not as much. Speak only for yourself in this regard. I fail to see what sympathy has to do with anything.

Trimlock said:
Also makingt his US wide on every free way regardless if its just a coil will cost trillions. ..... and trillions of dollars will be a small price.
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The poster I quoted did not quote the previous post mentioning installing the devices in freeways. This led to an assumption that the post I quoted was in response to the OP.

Given the efficiency of these devices, our current electrical grid would be unable to support these if placed every 10 yards or so on freeways. The money isn't the issue here, we simply don't have the capability to produce that much electricity.
 
Methadras said:
Why should I have to spend 6 digits to own a car like this? I'll never spend that kind of money to buy gasoline for my car/truck.
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The Tesla is absurdly expensive but all the other electric vehicles aren't too far behind either. When electric is cheaper than regular cars, more people will do it.
 
Trimlock said:
Considering what you quoted for the most part were people attempting to be funny i doubt you will get much sympathy for being disapointed.

Also makingt his US wide on every free way regardless if its just a coil will cost trillions. Who cares if the coils themselves are cheap, thats not the #1 cost, the number 1 cost will be the physical construction of applying these onto an electrical grid through concrete and asphalt. Apply all of that to how many miles of free-way road (assuming this ONLY goes to free ways) and trillions of dollars will be a small price.
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That was what I was thinking about. The cost of ripping up every single highway to install these devices would be astronomical. And this does not even take into consideration the hardship everyone will have during construction and then the cost of replacing every car in america.
 
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