CONVERSION CIRCUIT, CONVERSION CIRCUIT PRECHARGE CONTROL METHOD, AND PHOTOVOLTAIC SYSTEM

A conversion circuit, a conversion circuit precharge control method, and a photovoltaic system avoid additional costs and avoid impact on a switch caused by a current generated in a circuit at a moment when an RSCC enters an operating state, thereby ensuring operating performance of the RSCC. The conversion circuit includes a first power supply, a resonant switched capacitor converter (RSCC), and a control circuit. The RSCC includes a switch unit, an output filter unit, a first input end, a second input end, and an output end. The first power supply is configured to supply an input voltage to the RSCC. The control circuit is configured to: before controlling the RSCC to operate, control the switch unit in the RSCC to transmit, to the output filter unit, electric energy supplied by the first power supply.