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Wireless charging of an electric car - fast and safe

11.11.2012

Canadian researchers at the University of British Columbia have developed a safe, efficient wireless charging technology for electric vehicles. The secret of the new technology is in the principle of operation, which the developers called remote magnetic transmission.

Wireless charging is needed not only for electric vehicles, but also for many other equipment, including mobile phones and laptops. However, the high power of high-frequency electromagnetic radiation and the potential harm to human health is holding back the mass distribution of wireless chargers.

The system, invented by physicist Lorne Whitehead and his research team, operates at a frequency 100 times slower than traditional wireless chargers. At the same time, it produces significantly less harmful electric fields and is 90% more efficient than wired charging. In particular, the Canadian system charges the batteries of an electric vehicle in just 4 hours, which during the trial operation left the drivers with the most favorable impressions.

The secret of the new technology lies in the same magnetic transmission. The system uses two rotating magnets: the first is spun by an electric motor and causes the other to spin, generating electricity that charges the battery. Thus, a relatively simple device eliminates the need for high-frequency radiation and eliminates the need for complex electronic systems.

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