How Does Wireless Charging Works
The BMW i8 is a plug-in hybrid sports car developed by BMW and it was first introduced as the BMW Concept Vision Efficient Dynamics. The i8 (2015 model year) has a 7.1 kWh lithium-ion battery pack that provides an all-electric range of 23 miles under the New European Driving Cycle (NEDC).
Within the cycle of the United States Environmental Protection Agency (EPA), the range in EV mode is 15 miles with a small amount of petrol consumption.
But can you guess how does wireless charging work? And how does the BMW i8 Formula E pace car wirelessly charge?
Wireless charging works by the fact that if you put a current through a wire coil, that coil will create a magnetic field. And then, if you place another coil directly over the first coil, the magnetic field created by the first coil will produce a current in the second coil.
Usually this will be done with an alternating current and the magnetic field of the first coil will switch back and forth, creating an alternating current in the second coil. With no physical connection, you’re able to provide a current to charge a device.
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