A control method for a cleaning system, comprising the following steps: first control step—controlling a transfer robot to move a cleaning robot to a cleaning area; cleaning control step—controlling the cleaning robot to perform a cleaning operation on a upper surface of the cleaning area; second control step—controlling a transfer robot to move the cleaning robot away from the cleaning area.

Disclosed are a transfer robot (300) and a cleaning system. The transfer robot (300) comprises a vehicle body (310), a transfer device (320), and an angle adjusting device (330). The cleaning system comprises a cleaning area (500), a cleaning robot (200) and the transfer robot (300). The transfer robot (300) serves as a carrying tool for the cleaning robot (200), and transfers the cleaning robot (200) to a channel area (103) among a plurality of solar panel arrays (101), such that the cleaning robot (200) can complete cleaning work on the different solar panel arrays (101).

A method and device for attaching and detaching material to a c-channel groove without requiring tools and without needing to access an end of the c-channel. The device comprises a coil-shaped element that is resiliently compressible and connected to a desired material. Through biasing or twisting the coil-shaped element, it is insertable at any point along a c-channel groove. The coil-shaped element is secured within the c-channel groove against separation therefrom through friction. A portion of the coil-shaped element can be extended outside of the c-channel groove for easy removal.

An obstacle crossing mechanism, adapted and arranged on a cleaning rack of a photovoltaic panel cleaning equipment configured to clean photovoltaic panel arrays is disclosed. The cleaning rack includes connecting rods detachably-connected, and fixed rods arranged on respective connecting rods. The obstacle crossing mechanism includes a moving rack and a fixed rack, in which moving rack is used for temporarily stopping photovoltaic panel cleaning equipment; and the fixed rack is located below the moving rack and the moving rack ascends or descends on the fixed rack. A telescopic mechanism is further provided with the obstacle crossing mechanism so that the two mechanisms together facilitates the photovoltaic panel cleaning equipment to travel from a photovoltaic panel array to reach another photovoltaic panel array during cleaning process of photovoltaic panels without requiring any human assistance, thus achieve total automation.

An Automatic (Auto) Photovoltaic (PV) Solar Panel Washer comprising a main carrier joined by a connecting member to the main mast. A main hydraulic cylinder system comprising one or more hydraulic cylinders and connector arrangement on the main mast raises the main mast up or pushes it down, activating the connecting member, thereby raising or lowering the main carrier. The positioning hydraulic cylinder determines the angle of the main carrier by pushing one end down or bringing it up. A rotating device assembly rotates the main mast and main carrier clockwise or counterclockwise from rest position over its stationary post. The main carrier comprises a rigid frame with attachments including a cleaning assembly consisting of air cylinders with cleaning wiper systems, tracks for the air cylinder shafts, wash material pipes with spray devices attached, rinse material pipes with spray devices attached, and compressed air drying pipes with air spray devices.

A snow removal apparatus or snow sweeper generally having an elongated handle secured to a scraper and further including a slide suspended between the scraper and the handle is disclosed for use in removing snow and ice from outwardly facing surfaces of solar panels. The scraper preferably includes a top plate and a bottom plate secured to one another so as to engage the slide. The bottom plate is preferably made of HDPE. In preferred embodiments, the bottom plate will have a leading edge that extends beyond a first end of the slide and the top plate, the slide will be made at least partially of polyethylene material and a second or following end of the slide will include a stiffener and the polyethylene material is sewn at least partially around the stiffener.

A method and device for cleaning and pretreating solar panels is provided. The device comprises a brush having cleaning elements made from silicone foam rubber material. The cleaning elements can be flaps of silicone foam rubber material. A sheet of silicone foam rubber material having two free ends can be attached to a core member such that the two free ends extend away from the core member to form flaps. The solar panels can be cleaned by brushing the solar panel surfaces with the flaps of silicone foam rubber material. The solar panels can also be pretreated by brushing the solar panel surfaces with silicone foam rubber material.

Presented herein are systems and methods for waterless, contactless systems and methods for cleaning solar panels that can be applied, for example, to photovoltaics and solar reflector power plants. The systems and methods remove dust particles from surfaces using electrostatic induction.

Presented herein are systems and methods for waterless, contactless systems and methods for cleaning solar panels that can be applied, for example, to photovoltaics and solar reflector power plants. The systems and methods remove dust particles from surfaces using electrostatic induction.

A solar panel washing assembly for automatically cleaning solar panels includes a plurality of solar panels that is each positionable on a support surface to be exposed to sunlight. A fluid supply pipe is fluidly coupled to a pressurized water source w to receive pressurized water and a control unit is positioned proximate the support surface. The control unit is fluidly coupled to the fluid supply pipe to receive the pressurized water. A plurality of distribution pipes is each fluidly coupled to the control unit to receive the pressurized water when the control unit actuated into the open condition. A plurality of spray nozzles is each fluidly coupled to a respective one of the distribution pipes to spray the pressurized water onto a respective solar panel to clean the respective solar panel.