The new wireless technology discards the need of a charging cable or a socket on the car's design.
Hyundai-Kia America Technical Center (HATCI) and Mojo Mobility (Mojo) have completed a three-year project to develop a fast-charging wireless power transfer system on a test fleet of Kia Soul EVs.
The project, in collaboration with the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy, could probably pave the way for the future of electric vehicles in which plugs are no longer necessary. It could eventually alter the overall design of the electric cars as well.
The compact wireless charging system is capable of transferring more than 10 kW to the vehicle for fast charging while targeting an 85 percent grid-to-vehicle efficiency. The project installed the system on five Soul EVs and tested them in real-world applications for durability, safety and performance.
The system works by using an electromagnetic field to transfer energy between two coils—a transmitter on the ground and a receiver on the bottom of the vehicle. The driver simply parks the car above the transmitter to begin charging and then energy is sent through an inductive coupling to an electrical device, which uses that energy to charge the electric vehicles’ battery. The system will also allow some misalignment between the transmitter and the receiver, making it easier and more convenient for owner’s day-to-day use.
William Freels, HATCI president, said, “With this fleet of wireless Soul EVs, we can clearly see a future of unplugged electric vehicles.”
There is no current plan to offer the wireless charging system on production vehicles for sale to consumers; however, the success of this development project suggests similar systems are possible on future Kia electric vehicles.
HATCI is HMG’s (Hyundai Motor Group) design, technology and engineering division for North America. Mojo is a privately-held company specializing in wireless power charging systems for mobile applications ranging from wearables, mobile phones, tablets and laptops to high-power electric vehicles.
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