TECNALIA, largest private Research, Development and Innovation group in Spain, has developed a system for wireless recharging of electric car batteries, just like the batteries of toothbrushes are being recharged.
The system has an element located in the ground, transmitting electricity to another receptor element which is fitted to the vehicle. When the emitter detects that the car is above it, it connects wirelessly and starts to transfer energy. It is similar to the way in which a wireless toothbrush is recharged; just bringing the apparatus close to a base without the need for an actual electrical contact.
The systems developed to date for recharging a vehicle are conductive, energy being conducted through an electric lead. The novelty of this system is that the recharging is inductive, i.e. the energy is transmitted through an electromagnetic field. In these cases, the recharging time is similar to conductive ones and they have an efficiency of 93% of the energy.
Apart from the convenience that the system developed by TECNALIA provides for the electric vehicle user, the advantages for the car itself should be considered.
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