Wireless + bi-directional energy transfer
Honda will present at CES in January an interesting concept of a wireless charging system for electric cars that's combined with Vehicle-to-Grid (V2G), a bi-directional energy transfer capability.
The Wireless Vehicle-to-Grid (V2G) was developed jointly with wireless charging specialist WiTricity and enables not only to charge the car, but also to power the home or the electric grid.
The Japanese manufacturer is researching whether wireless V2G can create new value for customers.
"The growing popularity of electric vehicles (EVs) has the potential to strain the power grid, leading to the increased use of non-renewable energy sources to meet demand, which will result in greater carbon emissions. Recognizing that batteries in vehicles also can be used as storage to help balance supply and demand, Honda EV owners will be able to participate in the V2G program and receive compensation from utility operators who benefit from the use of Honda EVs to balance the grid's energy supply.
Unlike charging with a conventional charging cable, the system enables noncontact charging and discharging of an EV by parking on a charging pad, which makes the charging experience more convenient for customers. Honda has developed this Wireless Vehicle-to-Grid with WiTricity, the industry pioneer in wireless power transfer over distance. The Honda Wireless Vehicle-to-Grid can help eliminate the gap between supply and demand of electricity by charging EVs when power generation is greater than power consumption, and by discharging electricity from EVs to the power grid when consumption is greater than generation. To put this system in practical use, Honda is interested in collaborating with energy-related companies, including aggregators and electric companies."
Block diagram for a bi-directional WPT system. Tachikawa et al. - Honda and WiTricity (Source: Green Car Congress)
- DRIVE 11 Evaluation System
- Feasibility Study of Bi-directional Wireless Charging for Vehicle-to-Grid