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A method for preparing a self-cleaning film on the surface of a solar photovoltaic module

A technology of solar photovoltaic and self-cleaning film, applied in coating and other directions, can solve the problems that cannot be used to transform solar photovoltaic modules, there is no passage for cleaning vehicles to move, it is difficult to achieve high light transmission effect, etc., and achieve good photocatalytic decomposition. The ability of organic matter, good self-cleaning effect, good effect of anti-reflection and anti-reflection effect

Active Publication Date: 2021-07-20
BEIJING NORTH STAR DIGITAL REMOTE SENSING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the cleaning methods of solar photovoltaic modules are as follows: ①Manual cleaning with high-pressure water gun or cleaning brush: the equipment is simple and the operation is pollution-free, but it requires a lot of labor and clean water. It is limited by the region and environment, the cleaning effect is not good, and it needs to be repeated many times. times performed
②Intelligent equipment cleaning: For example, small wall-climbing robots are placed directly on solar panels for cleaning, but the effect of dust removal and decontamination is poor, and automatic transfer between partitions cannot be performed. The technical requirements are high and it is difficult to use on a large scale
③Vehicle-mounted mobile cleaning: Use a cleaning vehicle to load cleaning water and mechanical arm cleaning equipment, which is convenient to move and can realize water recycling. However, there is no channel for the cleaning vehicle to move between closely arranged photovoltaic modules, and the top or surface of the building Photovoltaic modules are difficult to use in this way
This method has simple equipment, easy film formation, and low cost; but the disadvantage is that it is difficult to control the process parameters, it is difficult to achieve high light transmission effect, and it needs high temperature treatment, so it cannot be used to transform solar photovoltaic modules that have been built and put into use

Method used

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  • A method for preparing a self-cleaning film on the surface of a solar photovoltaic module
  • A method for preparing a self-cleaning film on the surface of a solar photovoltaic module

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Effect test

Embodiment 1

[0034] The preparation method of the self-cleaning film layer on the surface of the solar photovoltaic module of the present embodiment comprises the following steps:

[0035] 1) Take ethylene glycol and n-butyl titanate and mix them uniformly according to the volume ratio of 1:0.24 to obtain mixture A;

[0036] Take ethylene glycol and water and mix them uniformly according to the volume ratio of 1:1.9 to obtain mixture B;

[0037] Under the conditions of ice bath and continuous stirring, according to the volume ratio of mixture A and mixture B of 1:3, mix mixture A and mixture B uniformly to obtain mixture C;

[0038] 2) The mixture C obtained in step 1) was heated up to 105°C at a rate of 5°C for 3.0 hours to remove water in the system, and then heated to 120°C at a rate of 5°C for 2.0 hours to remove butanol produced by the reaction in the system , after cooling to room temperature and performing centrifugation, the rotating speed of centrifugation is 8000rpm to obtain a ...

Embodiment 2

[0046] The preparation method of the self-cleaning film layer on the surface of the solar photovoltaic module of the present embodiment comprises the following steps:

[0047] 1) Take ethylene glycol and n-butyl titanate and mix them uniformly according to the volume ratio of 1:0.25 to obtain mixture A;

[0048] Take ethylene glycol and water and mix them uniformly according to the volume ratio of 1:2.0 to obtain mixture B;

[0049] Under the conditions of ice bath and continuous stirring, according to the volume ratio of mixture A and mixture B of 1:3, mix mixture A and mixture B uniformly to obtain mixture C;

[0050] 2) The mixture C obtained in step 1) was heated at a rate of 5°C to 110°C for 2.5 hours to remove water in the system, and then heated to 125°C at a rate of 5°C for 1.5 hours to remove butanol produced by the reaction in the system , after cooling to room temperature and performing centrifugation, the rotating speed of centrifugation is 8000rpm to obtain a pre...

Embodiment 3

[0058] The preparation method of the self-cleaning film layer on the surface of the solar photovoltaic module of the present embodiment comprises the following steps:

[0059] 1) Take ethylene glycol and n-butyl titanate and mix them uniformly according to the volume ratio of 1:0.26 to obtain mixture A;

[0060] Take ethylene glycol and water and mix them uniformly according to the volume ratio of 1:2.1 to obtain mixture B;

[0061] Under the conditions of ice bath and continuous stirring, according to the volume ratio of mixture A and mixture B of 1:3, mix mixture A and mixture B uniformly to obtain mixture C;

[0062] 2) The mixture C obtained in step 1) was heated at a rate of 5°C to 110°C for 3.0 hours to remove water in the system, and then heated to 120°C at a rate of 5°C for 1.5 hours to remove butanol produced by the reaction in the system , after cooling to room temperature and performing centrifugation, the rotating speed of centrifugation is 8000rpm to obtain a pre...

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Abstract

The invention relates to a method for preparing a self-cleaning film on the surface of a solar photovoltaic module, comprising 1) adding a mixture A of ethylene glycol and n-butyl titanate to a mixture B of ethylene glycol and water to obtain a mixture C; 2) adding The mixture C is heated to remove water and butanol, then cooled and separated from solid and liquid, and the precipitate is washed with water to remove ethylene glycol to obtain modified nano-TiO 2 particles; 3) the modified nano-TiO 2 Disperse the particles in water, add inorganic phosphate binder and nano-ZnO aqueous dispersion to obtain mixture D; 4) apply mixture D on the surface of photovoltaic glass, and cure at low temperature to form a film layer with a thickness of 70-100nm. The obtained self-cleaning film has strong hydrophilicity, good light transmittance and the ability to photocatalytically degrade organic matter, and has a good self-cleaning effect, which can improve the safety and reliability of photovoltaic modules and prolong their service life; the curing temperature in the preparation process is low , can be used for upgrading and transformation of solar photovoltaic modules that have been put into use, and has wide applicability.

Description

technical field [0001] The invention belongs to the technical field of self-cleaning of solar photovoltaic power generation components, and in particular relates to a preparation method of a self-cleaning film layer on the surface of a solar photovoltaic component. Background technique [0002] Solar energy refers to the radiant energy of sunlight. As a clean energy with abundant reserves, its utilization process is the most direct application of solar energy, and has very little impact on the environment and climate. It is the hottest research in the field of new energy in recent years. direction. Solar photovoltaic modules are photoelectric conversion systems that use the photovoltaic effect to directly convert the energy in sunlight into electrical energy. The main components include aluminum alloy frames, ultra-white tempered glass (photovoltaic cover glass), EVA for packaging, cells, TPT ( backplane), etc. There are many factors that affect the power generation of sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/00C03C17/25
CPCC03C17/007C03C17/256C03C2218/11
Inventor 董志乾
Owner BEIJING NORTH STAR DIGITAL REMOTE SENSING TECH CO LTD
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