The future of mobility is electric. We have the technology and given the ever-rising concerns surrounding global warming and fossil fuels, we certainly have the motivation. But with only about 20,000 charging stations across the US—about ⅙ the number of gas stations—electric vehicles aren’t yet practical for widespread use. While more designated charging stations are needed, one startup believes they have the technology to bring simplified car charging to homes, parking lots, and eventually the roads themselves .
WiTricity is working on a form of wireless charging called magnetic resonance. This technology draws energy from the electric grid through a wire which leads into a copper coil on the ground, creating a magnetic field. As a second copper wire attached to the bottom of a vehicle enters this magnetic field, an electric current is generated and used to charge the car’s battery pack. So to charge your vehicle, you simply need to pull into the spot and wait a few hours. WiTricity claims that this method is just as efficient as current cable charging systems. But unlike cables, coils can transfer energy straight through asphalt and pavement, allowing this tech to be used in parking lots and driveways. This capability is at the core of WiTricity’s loftiest goal—turning cars into mobile power banks.
WiTricity wants to install their technology underneath roadways so cars can refuel while driving. But they’re being realistic about the complexity of making this happen in the coming years. CEO, Alex Gruzen, says cities and states won’t want to tear up hundreds of miles of roadway to install electric charging. For now, Gruzen has sights on airports and train stations with large stretches of taxi lanes. Cars could charge while they’re in line. Eventually, WiTricity wants to see electric cars rolling around as giant batteries. They could store up electricity until needed and then divert back any excess directly into the grid either for payment or credits for free for their next refuel. While this practice of redistributing energy to the grid could exist with cable charging, it is likely much simpler and faster via the coil method.
Check out this video demo of WiWtricity’s wireless charging:
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