Light reflecting film and photovoltaic battery assembly

Abstract

The invention discloses a light reflecting film and a photovoltaic battery assembly. The light reflecting film comprises a base layer and a light reflecting layer, wherein the light reflecting layer is laid on the base layer, the surface of the light reflecting layer is provided with multiple light reflecting microstructures arranged in parallel, each light reflecting microstructure includes multiple light reflecting surfaces forming different angles with the base layer, the light reflecting surfaces are used for reflecting incident light and controlling the angle between the reflected light and a vertical line of the base layer to be within 10-30 degrees, and the reflected light and the incident light are located at the same side taking the vertical line of the base layer as a boundary line; and the angle of the reflected light is controlled through setting the angle of the light reflecting surfaces, and the light reflected to the photovoltaic battery surface is enabled to be controlled within a small angle, thereby enabling the light to directly irradiate on the photovoltaic battery surface to the greatest extent, and thus achieving the purposes of vertically reflecting the incident light irradiated a welding strip and a gap of battery strings to the greatest extent and improving the utilization rate of light energy irradiated on the surface of the welding strip and the gap of the battery strings.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a light reflection film and a photovoltaic cell assembly. Background technique [0002] Photovoltaic modules are used to directly convert the sun's light energy into electrical energy. Since they do not consume petrochemical energy, reduce emissions of greenhouse gases and pollutants, are in harmony with the ecological environment, and are in line with the sustainable development strategy of the economy and society. With the popularization of photovoltaic modules and the industry's The power generation per unit area of ​​photovoltaic modules has become an important indicator of its performance. In order to increase the power generation, many photovoltaic modules have directly or indirectly set reflective structural layers on the ribbons on the surface of the cells, which will incident on the surface of the ribbons. The light reflected to the surface of other parts of the ce...

AI Technical Summary

Problems solved by technology

[0003] However, the existing technology does not consider the angle between the light and the reflective surface when the sun rises in the east and sets in the west. The light cannot directly hit the battery surface to the maximum extent, and the light energy irradiated on the surface of the ribbon and the gap between the battery strings cannot be fully utilized.

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