\/ Principle: The main circuit consists of input protection circuit breaker, AC smart energy meter, AC control contactor and charging interface connector; The secondary circuit is composed of control relay, emergency stop button, running status indicator, charging pile intelligent controller and human-computer interaction equipment (display, input, swipe card).
The power supply system mainly provides power for charging equipment, which is mainly composed of primary equipment (switches, transformers, lines, etc.) and secondary equipment (including detection, protection, control devices, etc.), and is specially equipped with active filter devices to eliminate harmonics and stabilize the power grid.
Charging equipment is the core part of the entire charging station electrical system, generally divided into DC charging device and AC charging device (pile), DC charging device, that is, non-vehicle charging machine, to achieve rapid battery charging function. Ac charging pile mainly provides the function of slow charging of the vehicle, the output is AC, and the car charger is connected.