A team of researchers at Oak Ridge National Laboratory demonstrated that a light-duty passenger electric vehicle can be wirelessly charged at 100-kW with 96% efficiency using polyphase electromagnetic coupling coils with rotating magnetic fields.
A team of researchers at Oak Ridge National Laboratory demonstrated that a light-duty passenger electric vehicle can be wirelessly charged at 100-kW with 96% efficiency using polyphase electromagnetic coupling coils with rotating magnetic fields.
ORNL’s patented system transferred power to a Hyundai Kona EV across a five-inch airgap using electromagnetic fields, a process similar to the wireless charging of small consumer devices.
“We’ve achieved the highest power density in the world for a wireless charging system for this class of vehicle,” ORNL’s Omer Onar said. “Our technology reaches power densities 8-10 times higher than conventional coil technology and can increase battery charge state by 50% in under 20 minutes.”
While researchers previously achieved a 120-kW charge using conventional coil technology in benchtop lab testing, this marks a milestone achievement for vehicle integration using ORNL’s polyphase coils.
Read more at DOE/Oak Ridge National Laboratory
Photo Credit: Joenomias via Pixabay
