Wirelessly Charge Electric Vehicles

A new technology uses magnets to refill car batteries without the need to plug it in.

Researchers at the University of British Columbia have invented a method for wirelessly charging electric vehicles.

The technology uses two magnets. One rotating base magnet is set in a parking spot, drawing energy from the grid, and a second is installed in the vehicle. When the vehicle is in position the magnet in the car rotates because of the pull of the base magnet. This movement generates power to charge the battery.

Here’s a demonstration of the technology in action:

Lorne Whitehead, Professor of Physics at the University of British Columbia, whose team created the technology explained the benefits of their work:

Wireless charging has been a much sought-after technical solution for everything from cell phones to electric cars. A significant concern for charging cars wirelessly has been the high power and high frequency electromagnetic fields and their unknown, potential health effects on humans.

Because the system is based on these “remote magnetic gears” the electromagnetic field created is negligible, maintaining a frequency 100 times lower than traditional wireless charging technologies. In tests, the system has proven to be more than 90 percent efficient, and a full charge takes only four hours.

Watch the video below for an in depth explanation of this invention:

University of British Columbia

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