Wireless charging system developed on Kia Soul EV
The Hyundai-Kia America Technical Center, Inc. (HATCI) and Mojo Mobility, Inc. announced the completion of a three-year project to develop a fast-charging wireless power transfer system on a test fleet of Kia Soul EVs. The project was in collaboration with the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy.
HATCI and Mojo worked together to develop a compact wireless charging system that can transfer more than 10 kW to the vehicle for fast charging while targeting an 85% grid-to-vehicle efficiency. In the project, the system was installed on five Soul EVs and tested 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 vehicle’s battery. The system will reportedly allow some misalignment between the transmitter and the receiver.
"We're thrilled with the success of the system and its efficiency," said William Freels, HATCI President. "We set out to develop wireless charging that has real world applications and is easy to use for the consumer. Now, 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.