What is the charging pile? Nowadays, global charging pile ownership surged, while high-power fast-charging network leads the growth. The charging piles’ function is like that of tankers in gas stations. Charging piles can be fixed on the ground or wall and installed in public buildings, residential parking lots or public electric car charging stations. They can be used to charge various types of electric cars according to different voltage levels. The input end of the charging piles is directly connected with the AC power grid, and the output end is equipped with charging plugs for charging electric cars. Generally, there are two charging modes, including regular charging and quick charging. People can swipe a specific charging card on the human-computer interaction interface provided by the charging pile to carry out corresponding operations such as charging mode, charging time, cost data printing, etc. The display screen of charging pile can display charging a...