The V2H system is composed of intelligent interactive terminals, energy storage bidirectional converters, on-grid and off-grid automatic switching devices and accessories. V2H mainly realizes the power interaction between electric vehicles and household loads.
The V2G system consists of intelligent interactive terminals, energy storage bidirectional converters, on-grid and off-grid automatic switching devices and accessories. V2G mainly realizes the power interaction between electric vehicles and the power grid.
The current advantage of V2H is that it is relatively mature. In the event of a power outage, V2H can be used as an emergency power supply for households/public buildings to supply power to important equipment. Compared with V2H, V2G is more attractive to everyone. It can realize the interaction between electric vehicles and the power grid, so that electric vehicles can absorb electricity when the grid load is low, and release electricity when the grid load is high, so as to earn the price difference. If V2G is really realized, everyone can regard every electric vehicle as a small charging treasure. When the grid load is low, the charging gun is mainly plugged in, and it can automatically store energy. When the grid load is high , the power of the power battery can be released into the grid, which can effectively relieve the grid pressure.
At the same time, the realization of V2G allows electric vehicle users to charge the vehicle when the electricity price is low, and sell the energy stored in the vehicle to the power grid company when the electricity price is high, so as to obtain cash subsidies and reduce the cost of using electric vehicles.
For power grid companies, it can not only reduce the power consumption caused by the large-scale development of electric vehicles, but also use electric vehicles as energy storage devices to regulate the load, improve the efficiency and reliability of the power grid, and reduce the energy storage construction of the power grid. investment.
For automobile companies, V2G technology enables users to effectively reduce the cost of using electric vehicles, and in the event of natural disasters, etc., V2G technology can also be used to make electric vehicles with power output functions also used as emergency power sources. Increase the use of electric vehicles, thereby promoting the production and sales of electric vehicles.
