Electric Vehicle Wireless Charging – Nissan Gets Patents for EV Electromagnetic Induction Charging Tech
In May 2019, Nissan announced it has received an Indian patent for its wireless charging technology for electric vehicle, which could help the vehicle to charge without connecting with a charging device.
When the vehicle is parked at a specific parking position, the power feeding coil will be positioned below the power receiving coil under the vehicle, without both getting into direct contact.
It is not clear whether Nissan already has patents from other countries from US or EU for this yet,
However, the following is what the Nissan web site says about its wireless charging process for cars: “Magnetic flux is generated vertically from the ground when electricity passes through the Ground Transmission Unit’s primary coil, which is installed on the surface of the parking place. Electrical pressure is generated by overlapping with the secondary coil in the Vehicle Receiver Unit in the vehicle, and electricity is supplied from the first coil to the second one (electromagnetic induction). The unique technology achieves a charging efficiency of 80-90%, equivalent to that of cable charging.” Source – Nissan web site
Wireless charging is still in its infancy worldwide, and even more so in India. While such charging will indeed make charging electric vehicles easier (perhaps all parking lots can have these), I reckon it will take a while before it gets commerciliazed in countries like India.
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