The charging pile consists of pile body, electrical module, metering module and other parts. The pile body includes the shell and human-computer interaction interface. The electrical module includes charging socket, cable transfer terminal block, safety protection device and so on.

Safety protection function: the charging pile should have overload protection, leakage protection, lightning protection, emergency stop and other safety protection functions.

Human-computer interaction function: it is used to input charging parameters and display relevant information under each state. For example, the user of the charging pile can enter the charging power or charging amount through the keyboard on the charging pile, and make a reservation for charging time (start charging at night when the electricity consumption is low).

During the charging process, charging voltage, charging current, charging amount and other status information can be displayed on the charging post. Users can check the charging card account, fund balance and other information.

Charging posts providing public charging services generally also have functions such as card swiping, identification, metering and billing, ticket printing, local device debugging and remote communication control.