Nissan Motor Co Ltd developed a system that supplies electricity from the Leaf electric vehicle (EV) to a residence.
The announcement was made Aug 2, 2011. By using a cable to connect a power controller to the Leaf's connector for rapid charging, electricity is transmitted from the power controller to the distribution board of a residence.





The Leaf can supply electricity of up to 6kW to a residence. When the EV's battery, whose capacity is 24kWh, is fully charged, it is possible to supply the amount of electricity that a normal household uses in two days, Nissan said. The company aims to release the system within fiscal 2011.
Nissan installed the power supply system in a residence that Sekisui House Ltd built near Nissan's headquarters building in Yokohama, Japan, and demonstrated the installed system.
Its power controller connected to the distribution board was set up in the parking space of the residence. Then, the power controller was connected to the Leaf by using a cable. When the touch-sensitive display set up in the parking space was operated, the Leaf started supplying electricity to the residence.
The electricity output from the power controller has a voltage of 200V and a frequency of 50/60Hz (alternating-current power).
For power transmission between the power controller and the Leaf, control signals based on the CAN (controller area network) are used. Nissan developed the protocol of the control signals by extending the protocol based on the "CHAdeMO" rapid charging standard. Demand signals such as for output power are sent from the power controller to the charger equipped in the EV by using the CAN, and the charger discharges electricity from the EV's battery in response to the signals.
To use the new system with the Leaf that has already been released, it is necessary to change its software though it is not necessary to make any changes to the hardware or to add any hardware part.

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