Photovoltaic charging circuit having synchronized reverse isolation function

The invention, which belongs to the new energy technology field, relates to a photovoltaic charging circuit having a synchronized reverse isolation function. The photovoltaic charging circuit comprises a photovoltaic cell PV, an MOSFET tube T1, an energy-storing storage battery E, a synchronized reverse isolation circuit, a PWM control circuit, a diode D4, an inductor L1, and a capacitor C1. An anode PV+ terminal of the photovoltaic cell PV is connected with a drain electrode D of the MOSFET tube T1; a source electrode S of the MOSFET tube T1 is connected with a cathode of the diode D4 and a 01 terminal of the inductor L1; a 02 terminal of the inductor L1 is connected with one terminal of the capacitor C1 and a 06 terminal of the synchronized reverse isolation circuit; a 07 terminal of the synchronized reverse isolation circuit is connected with an anode SB+ terminal of the energy-storing storage battery E; a grid electrode G of the MOSFET tube T1 is connected with an output of the PWM control circuit; and an