Capacitor discharge circuit and power converter

A capacitor discharge circuit, two ends of a capacitor that needs to be discharged being electrically connected with two input ends of an AC power supply respectively, and the capacitor discharge circuit being electrically connected with both ends of the capacitor that needs to be discharged, wherein the capacitor discharge circuit includes a detection circuit and a discharge loop;

• wherein:
• the detection circuit has input ends electrically connected with the input ends of the AC power supply, and an output end outputting a discharge detection signal to an input end of the discharge loop;
• the discharge loop is electrically connected with both ends of the capacitor that needs to be discharged, wherein the discharge loop includes a switch unit and an energy consumption unit, and ON or OFF of the switch unit is controlled by the discharge detection signal output from the output end of the detection circuit;
• and
• when the AC power supply is disconnected, the discharge detection signal output from the detection circuit switches on the switch unit in the discharge loop to conduct the discharge loop, such that the energy consumption unit discharges the capacitor that needs to be discharged.