Renault began to use the slow charging pile to start the charging function of V2G.

A few days ago, Renault announced the launch of the V2G charging pilot project, which is characterized by the use of AC charging piles, also known as slow charging piles, through which vehicles release electric energy to the power grid for use by families, enterprises and public facilities.

The V2G system developed by Renault is different from the ordinary V2G system. It uses AC charging piles to release the electric energy of vehicles into the power grid. There are two reasons for this design. First, the relatively expensive DC charging pile which can realize bidirectional charging function is abandoned, and the relatively cheap bidirectional AC charging pile is used as the key link of the system, which reduces the system cost; Secondly, because the development of the system depends on the current Renault ZOE, but the car is not equipped with a fast charging system at present, so it can only be developed through an AC charging system at present.

However, this scheme of realizing V2G function through AC charging system does reduce a lot of costs compared with DC charging system. As long as the reverse charger is installed on the vehicle, the vehicle can release electric energy to the power grid. However, due to the limitation of equipment power, the instantaneous released electric energy is far less than that of DC charging system. According to Renault official, there will be 15 Renault Zo es equipped with V2G function in 20021year, which will be tested in European countries such as the Netherlands and Portugal.

The advantage of V2G function is that the vehicle is not only a vehicle, but also an energy storage device. When the load of the power grid is high, sufficient power in vehicles can be fed back to the power grid to make up for the power supply pressure during the peak hours of the power grid. Moreover, it can also be combined with local renewable energy to store the surplus electric energy generated by the renewable energy system during the period of low electricity consumption, so as to optimize the peak-valley balance between power production and consumption in the power grid. At the same time, users who use V2G function will enjoy more environmentally friendly and economical electricity consumption, and get certain economic returns while providing power supply services for the power grid. However, the above understanding of V2G is still in the theoretical stage, and the real practicability and reliability of the system have yet to be verified. @20 19