This team has achieved a major milestone, showcasing the potential for wireless charging to change how we power our EVs. Currently, commercial wireless charging solutions offer only 11 kW, but ORNL's research suggests a future where charging could be as easy as parking over a pad.
In a groundbreaking demonstration, a modified Porsche Taycan prototype reached a peak wireless charging rate of 270 kW, matching the maximum DC charging rate of earlier models.
The success of this system lies in an innovative polyphase wireless charging design integrated into the Taycan's underbody. This advanced technology uses lightweight electromagnetic coupling coils, measuring just over 48 cm in diameter, to achieve unprecedented power density. Unlike traditional systems, ORNL's design utilizes rotating magnetic fields to significantly enhance power transfer.
Omer Onar, the lead researcher on the project, noted, "The receiver coil designed for the Porsche Taycan research vehicle can achieve 8 to 10 times higher power density compared to existing systems. Per kilowatt weight, this is also the most lightweight charging system in the world."
This demonstration is the result of a DOE-funded project between ORNL and Volkswagen, but the journey is far from over. The team plans to continue refining the system, making it smaller, more cost-effective, and ready for mass production.
Although a commercial rollout date is still unknown, this technology could revolutionize EV charging, making it more convenient and accessible. The ORNL wireless charger can add 50% to the Taycan's charge in just 10 minutes, comparable to plugging into a DC fast charger. This level of efficiency could help alleviate range anxiety and make EV ownership more appealing to a broader audience.
Source: ORNL