Elevating Electric Vehicle Charging with High-Power Wireless Technology

wireless EV charging

Estimated reading time: 3 minutes

Transforming Electric Vehicle Charging Landscape

In a revolutionary leap, a cutting-edge wireless EV charging pad emerges, promising to recharge vehicle batteries as effectively as traditional wired plugs, boasting an unprecedented power delivery of 100 kW. This breakthrough innovation paves the way for rapid, convenient, and highly efficient charging simply by parking in designated areas.

A Glimpse into Wireless Power Transfer History

Wireless power transfer, a concept pioneered by Nikola Tesla in the 1890s, has now become a commonplace phenomenon in modern households. From charging smartphones and tablets to powering electric toothbrushes and inductive cooktops, the transmission of power through electromagnetic fields has evolved from mystical to mundane, recognized as a safe, convenient, and efficient method for various applications.

Evolution in Electric Vehicle Charging

While wireless charging technology has found its niche in consumer electronics, its adoption in the electric vehicle (EV) domain has been hindered primarily by limitations in power delivery. Current commercially available wireless EV chargers, such as Hevo’s 12 kW model, fall short of meeting the demands for fast-charging infrastructure prevalent in the EV ecosystem.

Enter ORNL’s Groundbreaking Innovation

In a significant development, researchers at Oak Ridge National Laboratory (ORNL) have unveiled a game-changing solution poised to revolutionize the EV charging landscape. Leveraging a sophisticated “lightweight polyphase electromagnetic coupling coil design,”

ORNL’s wireless EV charger boasts unparalleled power delivery, surpassing existing offerings by more than eightfold. This remarkable achievement translates to charging an EV with up to 350 miles (563 km) of range in just one hour, marking a substantial advancement in charging efficiency.

Unveiling the Technical Marvel

ORNL’s innovation was put to the test by outfitting a Hyundai Kona EV with a receiver coil positioned above a 14-inch diameter polyphase transmitter, maintaining a five-inch air gap between them. The system demonstrated an impressive power delivery of 100 kW with an outstanding efficiency of 96%, comparable to traditional cable and plug configurations.

Notably, the polyphase coil design enables unparalleled power density within compact coils, ensuring a streamlined and convenient charging experience.

Envisioning a Future of Rapid EV Charging

The implications of ORNL’s breakthrough extend beyond mere technological advancement. With the capability to increase battery charge state by 50% in less than 20 minutes, the potential for widespread adoption of fast and efficient wireless charging for passenger EVs becomes increasingly tangible.

Overcoming Adoption Challenges

Despite the promising prospects of wireless EV charging, widespread adoption hinges upon several factors, including standardization by car manufacturers and the development of requisite infrastructure. This symbiotic relationship between manufacturers and infrastructure developers presents a classic chicken-and-egg dilemma, necessitating collaborative efforts to drive progress in the EV charging ecosystem.

Towards a Brighter Future

While challenges persist, the collective pursuit of advancing wireless EV charging underscores a shared commitment towards sustainable transportation solutions.

With industry leaders like Tesla spearheading initiatives to integrate wireless charging capabilities into vehicles and infrastructure, the vision of a future where wireless EV charging rivals its wired counterparts inches closer to reality.


In conclusion, the emergence of high-power wireless EV charging technology signifies a paradigm shift in how we approach electric vehicle infrastructure. As innovations continue to push the boundaries of efficiency and convenience, the prospect of seamlessly charging EVs wirelessly presents an exciting glimpse into the future of sustainable transportation.

While the journey towards widespread adoption may be fraught with challenges, the relentless pursuit of progress ensures a brighter and greener tomorrow for future generations.

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