Solar cell assembly for increasing light energy utilization ratio

Abstract

The invention discloses a solar cell assembly for increasing the light energy utilization ratio. The solar cell assembly comprises ultra-white low-iron toughened glass (1), a first EVA (Ethylene-Vinyl Acetate) layer (21), interconnected solar cells (3), a second EVA layer (22) and a back plate (4) arranged in sequence from top to bottom and encapsulated integrally, and is characterized in that: texturing treatment is performed on the surface of a welding band (5) for connecting the solar cells (3); gaps among the solar cells (3) are provided with cell gap reflecting layers (6); and texturing treatment is performed on the surfaces of the cell gap reflecting layers (6). Compared with the prior art, the solar cell assembly has the advantages that: the light utilization ratio of the assembly can be increased greatly, light rays which cannot be utilized by the assembly originally are reflected onto the solar cells and absorbed by the solar cells, photo-generated current is indirectly increased, and the output power and conversion efficiency of the assembly are increased.

Description

technical field [0001] The invention relates to the field of solar energy materials and devices, in particular to a solar battery component that increases the light energy utilization rate. Background technique [0002] As a clean and renewable new energy, solar energy has received more and more attention, and its application is becoming more and more extensive. At present, one of the most important applications of solar energy is photovoltaic power generation. The most basic unit of solar photovoltaic power generation is a solar cell. In a specific application, a plurality of solar cells are usually formed into a solar cell module, and then each solar cell module is connected to form an overall current output. [0003] The currently widely used solar cell modules are basically composed of ultra-white low-iron tempered glass, two layers of EVA ethylene-vinyl acetate copolymer, solar cells and backsheets encapsulated between the two layers of EVA. When the solar cell module ...

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Problems solved by technology

[0004] The above methods have a certain effect on improving the conversion efficiency of solar cell modules, but the utilization rate of sunlight by the modules is not ideal. The reflection direction is random, resulting in a very low utilization rate of this part of light; although the grid lines on the surface of solar cells play the role of collecting current, they inevitably block part of the light and reduce the utilization rate of light

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