The function of charging pile is similar to the refueling machine in a gas station. It can be fixed on the ground or wall and installed in public buildings (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 pile is directly connected to the ac power grid, and the output end is equipped with a charging plug for charging the ev. Charging pile generally provide conventional charging and fast charging two kinds of charging ways, people can use certain recharge CARDS in charging pile to provide credit card using the human-computer interaction interface, accordingly the charging ways, charging time and cost of operation, such as variable data printing, charging pile screen can show charging quantity, cost, such as charging time data.
