One of the biggest problems of electric cars is that their autonomy hardly exceeds a hundred kilometers and also the battery charge can last for hours, making long road trips practically unthinkable. However, in the future, all this could stop being a problem, thanks to a new technology that allows electric cars to recharge via wireless while driving on the highway. Imagine how crazy would that be?
This highly efficient recharging system uses magnetic fields to transmit electrical current without the need for cables. Like those already existing wireless charges for devices such as phones and tablets. The technique, called magnetic resonance, is based on the following process: two copper coils are coupled to resonate at the same frequency. One of them, the source, is connected to an electric current that generates a magnetic field around it and allows the wireless exchange of energy with the receiver provided that the distance between them is not very high.
In 2007, a group of scientists from MIT surprised all the experts when they managed to light a bulb using this technique. Now, researchers from Stanford University (USA) intend to go further and propose a model of highways in which a series of copper coils connected to the electric current are implemented. On the other hand, the cars would carry their own coils in the back, which could resound while traveling on the highway. In this way, magnetic fields would be created that would continuously transfer electricity to charge the vehicle’s battery. This transfer system has allowed an efficiency of 97 percent, according to the scientists in their work published in the journal Applied Physics Letters.
The applications of this technology do not stop there. According to the experts, in the future, the wireless could also allow the guided conduction by GPS in vehicles without a driver. Although the researchers say, it is first necessary to make sure that the system does not cause health risks or interfere with other aspects of driving.
Would you get in a car that is being driven via wireless without a driver?