According to a recent report by the Physicists Organization Network, researchers at the University of British Columbia (UBC) in Canada have made significant strides in wireless charging technology for electric vehicles. They've developed a unique "long-distance magnetic transfer device" capable of wirelessly charging cars over distance, which was successfully demonstrated on campus service vehicles. This breakthrough could potentially revolutionize the widespread adoption of electric vehicles across Canada.
Wireless charging has become a popular solution for various applications, from smartphones to EVs. However, concerns persist regarding the high-power, high-frequency electromagnetic fields used in wireless charging and their possible effects on human health. To address these issues, Ron Whitehead, a physics professor at UBC, along with his team, devised an innovative approach. Their method operates at a frequency 100 times lower than standard wireless charging systems, significantly reducing the exposure to electric fields. Their solution involves a "long-distance magnetic transfer device," which features a rotating magnetic base—mounted on the vehicle—that's powered by grid electricity, eliminating the need for radio waves. At the charging station, a corresponding magnetic base initiates the rotation of the magnetic base in the vehicle, generating electricity to charge the battery.
The research team installed four wireless charging stations around the UBC campus and adapted this technology for use with campus service vehicles. Test results revealed that the system is 90% more efficient than traditional cable charging. A full charge takes four hours, while an already fully charged vehicle can maintain its charge for eight hours.
David Woodson, the university’s director of infrastructure operations, highlighted one of the primary hurdles for electric vehicles: the necessity of connecting power cords and outlets, particularly in adverse weather or crowded situations. Since the system began testing, feedback from drivers has been overwhelmingly positive. With this technology, all drivers need to do is park their vehicles, and the charging process begins automatically.
Initially, the team designed a magnetically driven charging system for small medical devices like implantable pacemakers. The current, larger-scale system has received support from the Innovation Fund of the National Research Council of Canada. As a living laboratory, the campus serves as a testbed for gathering valuable data that could inform future advancements. Currently, the research team has submitted a patent application through the University Industry Liaison Office. (By Feng Weidong)
This innovation not only addresses practical challenges but also opens up new possibilities for sustainable energy solutions, marking a promising step forward in the realm of electric vehicle technology.
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