Solar power generation panel

Abstract

The invention relates to the technical field of photovoltaics, and discloses a solar power generation panel. The solar power generation panel comprises a solar cell panel, tempered glass is bonded tothe top of the solar cell panel through an EVA adhesive film, a back plate is bonded to the bottom of the solar cell panel through an EVA adhesive film, an aluminum alloy frame is fixedly installed onthe periphery of the solar cell panel, and meshes are formed in the EVA adhesive film. According to the solar power generation panel, through the arrangement of the meshes of the EVA adhesive film, the transmittance of sunlight is increased, the heat dissipation of the silicon panel is facilitated, the power generation efficiency is improved, the influence of local deterioration of the EVA adhesive film on the light receiving rate of the silicon panel is reduced, and the power generation stability of the solar power generation panel is ensured.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a solar power generation panel. Background technique [0002] Solar power generation is to use solar cells to generate electricity through the absorption reaction of sunlight: solar cells use semiconductors to generate electricity (currently, silicon wafers 102 are mostly used to generate electricity), such as Figure 5 As shown, when sunlight hits the surface of the semiconductor, a potential difference will be formed across the semiconductor, and current will be generated when the external wiring is connected. [0003] In order to adapt to the comprehensive consideration of safety and so on, solar cells will not be used directly, so solar power generation panels are manufactured on the basis of solar cells, the structure is as follows Figure 6 As shown, the existing solar panel is bonded together with the solar cell and tempered glass with a layer of EVA adhesive film, a...

AI Technical Summary

Problems solved by technology

[0003] In order to adapt to the comprehensive consideration of safety and so on, solar cells will not be used directly, so solar power generation panels are manufactured on the basis of solar cells, the structure is as follows Image 6 As shown, the existing solar panel is bonded together with the solar cell and tempered glass with a layer of EVA adhesive film, and then the outer periphery is packaged and fixed with an aluminum alloy frame. The prior art uses a whole piece of EVA adhesive film for bonding , even if the light transmittance is very high, it will also partially absorb and reflect the sunlight that hits the solar panel. After the tempered glass absorbs and reflects part of the sunlight, the EVA film will absorb and reflect again to make the solar battery The amount of sunlight absorbed by the solar system is greatly reduced, which affects the power generation efficiency

[0004] The EVA film bonded on the whole surface makes the solar cell wrapped and sealed, so that the heat generated when the silicon chip on the solar cell is working needs to go through the EVA film and then through the tempered glass to dissipate, and the heat dissipation effect is not good. Under this condition, the output power of silicon wafer solar cells will decrease with the increase of temperature, which further affects the power generation efficiency.

[0005] At the same time, after the solar power generation panel has been used for a long time, the silica gel inside it, which acts as a seal, will be prone to a certain decrease in sealing performance under the influence of various environments for a long time, and some parts will cause water to infiltrate. After the film is in contact, the light transmittance of the local EVA film will be greatly reduced, and the decrease in light transmittance will lead to a decrease in the light receiving rate of the silicon wafer bonded to the bottom of the EVA film in contact with water, which will affect the power generation of the silicon wafer. efficiency

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