Power control circuit and control method thereof

A control method of a power control circuit, wherein the power control circuit comprises an alternating current power supply module, a power module, and a control a controller, the alternating current power supply module comprises an alternating current power supply, a sampling apparatus, and a switch element, the alternating current power supply provides electric energy for the power module, and the power module comprises a bridgeless power factor correction (PFC) circuit;

• and the method comprises:
• sampling, by the sampling apparatus, a current signal, and outputting an obtained sampled signal to the controller;
• and
• controlling, by the controller, on and off of the switch element based on the sampled signal output by the sampling apparatus, switching off the switch element when the sampled signal comprises a lightning surge signal, and performing current metering on the sampled signal.

A power control apparatus, comprising an input port, an output port, and a power control circuit,

• the input port is configured to:
• receive a current output by a power supply module, and transmit the current to the power control circuit;
• the output port is configured to transmit a current output by the power control circuit to a load device;
• the power control circuit comprises an alternating current power supply module, a power module, and a controller, wherein
• the alternating current power supply module comprises an alternating current power supply, a sampling apparatus, and a switch element, wherein the alternating current power supply provides electric energy for the power module, and the sampling apparatus samples a current signal output by the alternating current power supply or the power module to the sampling apparatus, and outputs an obtained sampled signal to the controller;
• the power module comprises a bridgeless PFC circuit;
• and
• the controller controls on and off of the switch element based on the sampled signal output by the sampling apparatus, switches off the switch element when the sampled signal comprises a lightning surge signal, and performs current metering on the sampled signal.