Photovoltaic module cleaning device

The utility model relates to a photovoltaic module cleaning device which comprises a cleaning trolley capable of cleaning a photovoltaic module in the walking process, a direct-current motor is connected with the cleaning trolley through a transmission mechanism, the direct-current motor can drive the transmission mechanism to act so as to drive the cleaning trolley to walk, and an external direct-current power source supplies power to the direct-current motor. According to the photovoltaic module cleaning device, a lithium battery is completely abandoned, the direct-current power source is adopted as a power source to supply power to the direct-current motor driving the cleaning trolley to walk, the problem that the lithium battery is prone to breaking down is solved, and the stability and reliability of operation of the cleaning device are improved; in addition, the direct-current power supply can stably and reliably supply power without being affected by temperature, and the photovoltaic module cleaning de