Charging station refers to a charging device that provides energy replenishment for electric vehicles. Its function is similar to that of a fuel dispenser in a gas station, which can be fixed on the ground or wall, installed in public buildings (such as public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. It can charge various types of electric vehicles according to different voltage levels. The input end of the charging station is directly connected to the AC power grid, and the output end is equipped with charging plugs for charging electric vehicles. Charging stations generally provide two charging methods: conventional charging and fast charging. People can use a specific charging card to swipe the card on the human-computer interaction interface provided by the charging station, perform corresponding charging operations and print cost data. The charging station display screen can display data such as charging amount, cost, and charging time. The charging station (plug) can achieve timing, power consumption, and amount charging, and can serve as a terminal for citizens to purchase electricity. At the same time, in order to improve the efficiency and practicality of public charging stations (plugs), the functions of multi charging and charging electric bicycles will be gradually added in the future.