Driving an Audi is not a big event, but going large distances without a single drop of gasoline inside its belly sounds amazing. Audi EVs are the stars of today and the only thing that keeps people away from Audi EVs is the charging dilemma. To mitigate that problem, Audi is tying up with WiTricity in bringing wireless charging into commercial reality.
One major advantage of the inductive approach for vehicle charging is that there is no possibility of electric shock as there are no exposed conductors. Interlocks, special connectors and RCDs (ground fault detectors) can make conductive coupling nearly as safe compared to any other conventionally used methods.
Inductive charging uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through inductive coupling to an electrical device, which then can use that energy to charge batteries.
An inductive charging proponent from Toyota contended in 1998 that overall cost differences were minimal, while a conductive charging proponent from Ford had said conductive charging was more cost efficient.
WiTricity Technology is based on strong coupling between electromagnetic resonant objects to transfer energy wirelessly between them. This differs from other methods like simple induction, microwaves, or air ionization.
The system consists of transmitters and receivers that contain magnetic loop antennas critically tuned to the same frequency.
Due to operating in near an electromagnetic field, the receiving devices must be no more than about a quarter wavelengths from the transmitter. Audi, using this technology, is taking a major step in its gadget innovation, even as the automotive industry is taking a big leap towards the future with it. What do you say?