Patent ID: 9654022
Date: 2017-05-16
CPC Classifications: H02M

Claim:
1. A power conversion device, comprising: an alternating current (AC)/direct current (DC) conversion unit, configured to receive an AC input voltage through a power input terminal, and output a DC output voltage to a power output terminal according to the AC input voltage; a switch unit, wherein the switch unit is switched off according to the AC input voltage received from the power input terminal, and is switched on according to a DC input voltage received from the power input terminal; and a bypass circuit, configured to receive the DC input voltage through the switch unit, and output the DC output voltage to the power output terminal according to the DC input voltage, wherein the bypass circuit comprises: an overvoltage protection unit electrically connected to the switch unit and configured to turn off the bypass circuit when a voltage signal outputted from the switch unit is greater than a predetermined value.