Photovoltaic panel cleaning device

The invention relates to a photovoltaic panel cleaning device, which comprises a cleaning machine, a line-changing ferry vehicle and a line-changing track, and is characterized in that the cleaning machine comprises a walking module, a detection module, a control module, a cleaning module and a power supply module; the detection module sends a walking signal to the control module when detecting that a photovoltaic panel to be cleaned exists in a preset range; the control module receives the walking signal, conveys the sweeping machine to the front of the first row of to-be-swept photovoltaic panels through the row-feed ferry vehicle and controls the sweeping module to sweep the photovoltaic panels, and after sweeping is completed, the control module sends out a row-feed signal and controls the walking module to move to the row-feed ferry vehicle; and before the line-feed ferry vehicle conveys the sweeping machine to move on the line-feed track to the next line of photovoltaic panels, the control module contro