Charge your electric car while driving on the highway

Electric cars are clean, green and rather cool these days – even if they can’t compete with conventional vehicles in terms of battery life and driving range. These disadvantages could disappear; however, with a system for wirelessly charging cars as they speed down the highway.

To do this, scientists suggest using magnetic coils embedded in the roadway to create a weak field that resonates with a coil on the car to transfer power.

Accounting for the metal body and movement of the car a set of resonant coils and discs could transfer about 10 kilowatts with a 97 per cent efficiency within 7 microseconds – fast enough for the highway. The system, which is yet to be built, should be safe because power can only be transferred between two objects whose resonance is very closely attuned. Learn more here.

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