Wireless charging rectifier circuit, wireless charging device and ventricular assist device

A wireless charging rectifier circuit, comprising a first filter circuit, a bridge rectifier circuit, and a second filter circuit connected in sequence,

• wherein each of four bridge arms of the bridge rectifier circuit is respectively connected to a first diode and at least one second diode which are connected to each other in parallel, and the at least one second diode is configured to perform rectification when the parallel first diode fails,
• wherein a turn-on voltage drop of each of the first diodes is smaller than a turn-on voltage drop of each of the at least one second diodes;
• and
• when the wireless charging rectifier circuit operates normally, the first diode on each of the four bridge arms in the bridge rectifier circuit is turned on to form a rectifier circuit to perform the rectification;
• and when a first target diode fails, a second target diode is turned on to form the rectifier circuit to perform the rectification, the first target diode is the first diode on one of the four bridge arms, and the second target diode is one of the at least one second diode connected in parallel with the first target diode,
• wherein the first filter circuit comprises a plurality of first capacitors in parallel and a plurality of second capacitors in parallel;
• and
• one terminal of the plurality of first capacitors in parallel is connected to a first input terminal of the first filter circuit and one terminal of the plurality of second capacitors in parallel respectively, the other terminal of the plurality of first capacitors in parallel is connected to a second input terminal of the first filter circuit and a second output terminal of the first filter circuit respectively, and the other terminal of the plurality of second capacitors in parallel is connected to a first output terminal of the first filter circuit, and
• wherein the second filter circuit comprises a third capacitor, a plurality of fourth capacitors in parallel, a third diode, and a plurality of fifth capacitors in parallel;
• and
• one terminal of the third capacitor is connected to a first input terminal of the second filter circuit, one terminal of each of the plurality of fourth capacitors in parallel, an anode of the third diode, one terminal of each of the plurality of fifth capacitors in parallel, and a first output terminal of the second filter circuit respectively;
• the other terminal of the third capacitor is connected to a second input terminal of the second filter circuit, the other terminal of each of the plurality of fourth capacitors in parallel, a cathode of the third diode, the other terminal of each of the plurality of fifth capacitors in parallel, and a second output terminal of the second filter circuit.