Photovoltaic component solder strip retro reflective film

Abstract

The invention provides a photovoltaic component solder strip retro reflective film, including a base material, a back glue layer, a micro prism layer, a retro reflective layer, the back glue layer is provided on the lower surface of the base material, the micro prism layer is a multi micro prism array, and is provided on the upper surface of the base material, the retro reflective layer covers the surface of the micro prism layer, the ridge line direction of the micro prism and the length direction of the base material form a 15 DEG- 65 DEG angle setting. Compared to prior art, the ridge line direction of the micro prism and the length direction of the base material form an angle setting, which can augment the area of the reflecting surface, also enables the reflected light to recycle a larger surface of the cell slice, increases the utilization rate of light source, and increases the output power of the photovoltaic component.

Description

technical field [0001] The invention relates to a reflective film, in particular to a reflective film used on a photovoltaic module welding ribbon. Background technique [0002] Photovoltaic ribbons are used in the connection between photovoltaic module cells, and play an important role in conducting electricity and collecting electricity. In order to ensure reliable welding between the ribbon and the battery and prevent corrosion of the ribbon, the surface of the ribbon is coated with a tin layer. When the sunlight hits the surface of the ribbon, the tin layer will directly reflect the sunlight, and this part of the sunlight cannot Utilized by the battery board, resulting in a waste of light energy. [0003] Some solder strips have stripes on the body to reflect light, but the base material of the solder strips is copper, and the stripe structure is difficult to achieve a microstructure during processing. The reflective surface is not ideal. After tin coating, the thicknes...

AI Technical Summary

Problems solved by technology

In order to ensure reliable welding between the ribbon and the battery and prevent corrosion of the ribbon, the surface of the ribbon is coated with a tin layer. When the sunlight hits the surface of the ribbon, the tin layer will directly reflect the sunlight, and this part of the sunlight cannot Utilized by battery panels, resulting in a waste of light energy

[0003] Some solder strips have stripes on the body to reflect light, but the base material of the solder strips is copper, and the stripe structure is difficult to achieve a microstructure during processing. The reflective surface is not ideal. After tin coating, the thickness of the tin layer is likely to be uneven Uniform, easy to cause fragments of the cell, the price of tin raw materials is high, too thick will cause serious waste

[0004] In the patent literature with the publication number CN103413861A, a reflective film for photovoltaic modules is disclosed. The surface layer is provided with a prism-shaped microstructure layer, which is simple in structure and low in cost, and can improve the light energy utilization rate of photovoltaic modules. The ridgeline of the prism structure is along the length of the ribbon, and the reflected light will only be reflected to a local area of ​​the cell, which does not make full use of the entire cell

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