Japan’s Denso Corporation has announced a vehicle-to-home power supply for electric vehicles.
Designed to work with company’s own Home Energy Management System (HEMS), the new vehicle-to-home (V2H) arrangement is able to quick charge an EV’s battery pack by drawing current directly from the HEMS storage battery. In turn, the new V2H system can also transfer energy from the EV back to the house.
The V2H system has been designed so it can distribute electricity generated using the dwelling’s solar panel system to both the EV and the house.
Because quick charging an EV draws a substantial amount of energy, by integrating the V2H with the HEMS system, the new EV charger is able to replenish the vehicle’s battery pack without needing to rely on a dedicated charging device. Denso says that 15 minutes of quick charging will enable the EV to have range of around 12.4 miles.
In addition, to help best managing charging of both household appliances and the EV, as well as providing additional electricity capacity for local consumer use, excess energy generated by the house’s solar panel system can be stored either in the HEMS or EV itself, meaning it can be used immediately instead of being transferred to a utility company.
Denso’s new system was developed to coincide with the trend towards standardization of V2H and it has already begun testing the technology using EVs from Mitsubishi and Toyota.
Next year, the company plans to perform demonstration tests in an effort to find a practical way of using an electric vehicle or plug-in-hybrid as a key element in generating clean energy for home use.