Reflecting film used for photovoltaic module and photovoltaic module

Abstract

The invention provides a reflecting film used for a photovoltaic module and a photovoltaic module. The reflecting film comprises a flat body, wherein the body is provided with a microstructure used for reflecting light rays; the microstructure comprises at least one prism; envelope lines of the ridges on the two sides in the long axis direction of the bottom of the prism are periodically changed first curves; a curve in the period of the first curve is formed by a second curve with a vertex meeting an oscillation function constraint; and the vibration amplitude of a vibration function is gradually reduced. The first curve and the second curve are creatively utilized, so that a multi-face structure is formed on the side surface of the prism, the complex multi-surface structure can simultaneously give consideration to the reflection of the morning and afternoon sunlight, and meanwhile, light is reflected more evenly to a battery piece power generation area through the lower surface of packaging glass, so that the reflection efficiency of sunlight during the whole working period is improved, and the defects in the prior art are overcome.

Description

technical field [0001] The invention relates to a reflective film, in particular to a reflective film applied to a photovoltaic component, a manufacturing method thereof, and a photovoltaic battery component. Background technique [0002] Existing photovoltaic cell modules are composed of cell string packages, and the cells are connected by welding ribbons. The ribbon occupies the effective power generation area of ​​the photovoltaic module. When sunlight hits the ribbon surface, the smooth tin layer on the ribbon surface will directly reflect the sunlight. This part of the sunlight cannot be used by the solar panels, resulting in light energy waste. [0003] Some strips have striped structures on the body to reflect light, but the base material of the strips is copper, and the striped structure is difficult to achieve a microstructure during processing, the reflection effect is not ideal, and it will lead to uneven thickness of the surface tin layer , It is easy to cause ...

AI Technical Summary

Problems solved by technology

The ribbon occupies the effective power generation area of ​​the photovoltaic module. When sunlight hits the ribbon surface, the smooth tin layer on the ribbon surface will directly reflect the sunlight. This part of the sunlight cannot be used by the solar panels, resulting in light energy waste of

[0003] Some strips have striped structures on the body to reflect light, but the base material of the strips is copper, and the striped structure is difficult to achieve a microstructure during processing, the reflection effect is not ideal, and it will lead to uneven thickness of the surface tin layer , easy to cause fragments of cells, affecting production efficiency

[0004] Micro-prisms and other micro-structures have appeared in the prior art to reflect sunlight and improve the light conversion efficiency of photovoltaic cell modules. The sun's trajectory is a 180° arc, so the time for its best reflection efficiency is short and needs to be improved urgently

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