Deep washing and renovating device and washing and renovating method for glass surface of photovoltaic module

Abstract

The invention discloses a deep washing and renovating device and washing and renovating method for the glass surface of a photovoltaic module. The deep washing and renovating device comprises a cover body, a groove type washing liquid cavity is formed in the inner side of the cover body, a sealing belt is arranged on the periphery of the washing liquid cavity, a liquid inlet and a liquid outlet are formed in the cover body, and pressure fasteners are arranged on the cover body. The deep washing and renovating method comprises the following steps: preparing of the renovating device; fixing and sealing; washing; flushing; aeration-drying; and coating. Compared with the prior art, the device and method have the advantages that 1, deep washing can be realized, all dirt on the glass surface of the photovoltaic module including a moldy glass substrate can be washed off, and the effect is remarkable; 2, after the photovoltaic module is coated at normal temperature, a protective layer is formed on the surface, the hardness can reach 6H, and then corrosion of water vapor to panel glass is blocked; and 3, the method can be repeatedly adopted for washing, and the optimal power generation efficiency of the module can be achieved during washing each time.

Description

technical field [0001] The invention relates to a cleaning device and method for a photovoltaic module, in particular to a deep cleaning and refurbishment device and a cleaning and refurbishment method for the glass surface of a photovoltaic module. Background technique [0002] Photovoltaic modules have been exposed to the sun and rain outside for a long time, and have been tested by various extreme and harsh environments for a long time. As a result, various dirt will form on the surface, such as thick dust, bird droppings, white spots and gold spots caused by mold on the glass itself , iron oxide powder, rubber, etc.; in desert areas, the film layer even falls off due to the wind and sand blowing; in tropical and subtropical seaside areas, the air contains high salt and water vapor, and the surface of the film layer is easy to become rough or even fall off. Therefore, the power generation efficiency of photovoltaic modules generally declines year by year, by more than 10%...

AI Technical Summary

Problems solved by technology

This method is effective, and it has indeed greatly improved the power generation efficiency of photovoltaic modules. However, as time goes by, due to various pollutions on the top cover of photovoltaic modules and the poor weather resistance of the photovoltaic glass itself, hydrolysis and mildew will occur on the cover plate. The light transmittance of glass decreases year by year, and the power generation of photovoltaic modules decreases year by year

After 8 or 9 years, whether it is coated components or non-coated components, this decline has reached a very serious level. Some power generation declines have reached 20-30%, and some declines have even reached more than 40%, which greatly affects power generation. efficiency

[0005] The traditional cleaning method is only physical cleaning, cleaning the newly fallen dust on the surface of the component, so the effect is very limited; there is no way to remove the bird droppings on the component; there is no way to remove the moldy cover glass of the component due to high temperature and high humidity White spots and crystal spots on the surface; in a specific environment, such as a layer of iron oxide dirt on the surface of components near a steel plant, and a layer of vulcanized rubber on the surface of components near a rubber factory, which is not easy to clean; frequent brushing itself will form on the film surface. Physical damage, reducing the power generation efficiency of components

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