Scientists are working on a way to power electric cars during the drive to load, by magnetic coils in the road surface. Thus the biggest disadvantage of electric cars, the limited range of action, to be eliminated.
To power electric cars wirelessly while driving to charge, magnetic coils in the road surface will be placed, think of scientists from the Californian Stanford University. That writes the New Scientist. The coils create a weak field that resonates with a coil in the car, through which energy is transferred.
The scientists think to be capable of for a period of 7 microseconds 10 kilowatts of power between two resonant coils, with an efficiency of 97 percent. That would be good enough to even at high speeds, enough energy to transfer to an electric car to drive. The system, which currently only exists on paper, according to the New Scientist safe, because energy transfer only occurs when two objects are aligned properly. This would lead to people not at risk.
The system of the scientists is reminiscent of a similar concept from BMW and Siemens, which also use magnetic coils and resonance energy is transferred. That concept does not, however, during the drive, but it is intended for still cars, for example, electric taxis at the station.
With the wireless charging system are the biggest drawbacks of electric cars is raised, such as the limited cruising range; electric cars can on a full battery is often not further than 100 or 200 km away. Added to this is that charging stations are scarce, and charging takes much longer than the ewes with gasoline or diesel fuel of a conventional car. On the other hand, by the scientists devised system is likely significant investment required.