The invention discloses a photovoltaic module sweeping
robot system capable of automatically changing rows. A plurality of photovoltaic modules are parallelly arranged, two row changing rails are mutually parallel and perpendicular to the photovoltaic modules, each row changing rail is arranged at one end of the corresponding photovoltaic module, a row changing
cart is arranged on the row changingrails and can move along the row changing rails, mutually corresponding sliding rails are arranged at the upper ends and the lower ends of the photovoltaic modules and the row changing
cart, a sweeping
cart is arranged on the slider rails and can travel along the sliders, a
magnet switch, a first proximity switch and a
wireless radio frequency card reader are arranged on one side surface of the sweeping cart facing to the photovoltaic modules, a
magnet, a first contact and a RFID (
radio frequency identification device) tag corresponding to the
magnet switch, the first proximity switch and thewireless
radio frequency card reader are arranged at the end of each photovoltaic module, and a pin, an electric pushing rod and a pushing rod motor are arranged on one side surface of the row changing cart facing to the photovoltaic modules. The sweeping
robot system is high in sweeping efficiency and working accuracy.