Multi-layer solar backplate

Abstract

The invention relates to a multi-layer solar backplate. The multi-layer solar backplate comprises a PET substrate, wherein one side of the PET substrate is connected with a weather resistant layer by a bonding layer, a silver high-reflectivity layer is arranged on an upper surface of the weather resistant layer, the other end of the PET substrate is connected with a weather resistant bonding layer by a bonding layer, the silver high-reflectivity layer comprises one of polyethylene containing a high-reflectivity additive, polyprolynele, polyolefin or polyurethane resin, and the high-reflectivity additive comprises one of zinc oxide, aluminum oxide, zirconium oxide, titanium dioxide or a fluorescent whitening agent. The multi-layer solar backplate is simple in structure, is convenient to use and has favorable reflectivity and heat dissipation performance, the aging speed of a photovoltaic module is reduced, the power generation efficiency of the solar photovoltaic module is further improved, the service lifetime of the solar photovoltaic module is further prolonged, and the multi-layer solar backplate is excellent in light conversion efficiency and wide in application range.

Description

technical field [0001] The invention relates to the field of solar modules, in particular to a multilayer solar backboard. Background technique [0002] Solar energy, as a green and inexhaustible energy source, is undoubtedly the best choice to replace traditional thermal power generation. Since solar cells need to be exposed to the outdoors for a long time, the cells in photovoltaic modules need to be protected to prevent atmospheric pollution. The impact and overlooking of environmental factors such as water vapor, oxygen, and ultraviolet rays. The solar backsheet is one of the accessories of the whole solar cell. It mainly plays the role of mechanical support and protection of the cell from the penetration of environmental factors. At present, if the existing solar backsheet has poor reflection performance, it is easy to absorb sunlight, which will lead to the temperature of the solar module As a result, the light conversion efficiency of solar modules is greatly reduced...

AI Technical Summary

Problems solved by technology

The solar backsheet is one of the accessories of the whole solar cell. It mainly plays the role of mechanical support and protection of the cell from the penetration of environmental factors. At present, if the existing solar backsheet has poor reflection performance, it is easy to absorb sunlight, which will lead to the temperature of the solar module Increased, greatly reducing the light conversion efficiency of solar modules

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