Pretty cool
(twitter.com)
You're viewing a single comment thread. View all comments, or full comment thread.
Comments (66)
sorted by:
That part doesn't have to be done wirelessly. Just capturing the energy. Everything else can be hard wired on the vehicle.
And I think exploding batteries might be a risk with overvoltage, but I don't think it would be with tiny amounts of energy you'd get from radio waves.
I mean hypothetically if we have a proof of concept that it's at least possible to covert radio wave to electricity, you could make the car's entire body a surface that absorbs the energy.
Then it might be enough to at least use that as a hybrid source of energy, supplementing plugging into the grid.
It… does. Otherwise the vehicle can’t "power itself from radio waves.” The receiver has to be in the car.
Correct, but with the scale of power output required to actually do what the post claims it can do, it would be on the order of what happens to commercial windmills when they don’t shut down in high winds.
Remember in the ‘80s when “microwave power stations in orbit beamed down to Earth” was The Future™? Turns out, with the surface area required by the receiver antenna, solar panels (even at the time) could produce about three times the power. It’s just not viable. There are some electric cars today with solar panel roofs (to do just what you’re suggesting), but even then it’s really, truly just a “top up” supplement, not anywhere near capable of powering it indefinitely.
Nobody ever said the wireless power receiver needs to be directly connected to the battery with nothing in between to regulate the voltage like you're saying is necessary....
You can still have those capacitors and stuff in the circuit after the wireless power receiver, but before the battery gets the power. It doesn't have to be done on the transmitting end.
How do you know? Have you crunched the numbers? The amount of power needed to generate ratio waves isn't' negligible.
And it seems you're so eager to dismiss the idea outright you're inventing a problem while at the same time explaining how the solution is small enough to fit into a hand crank, and still not putting 2 and 2 together to realize that means the problem is already solved.
No.
Yep.
You can fit a voltage regulator capable of regulating 4 kW/h throughput into a hand crank?
Other than the laws of physics explicitly stating it’s not possible, sure.
Or another way to think of it is 7 months of sitting idle in a dealer or rental lot and the battery is completely full instead of having slowly drained to 0% during that time.
Even at those numbers it's still a feature.
Again.... who said it needs to drive the car directly instead of simply topping off a battery? Even a very weak current is capable of charging a battery.
You're just inventing unnecessary stipulations to say it's not possible.