A photovoltaic module and packaging process for the photovoltaic module

Abstract

The invention discloses a photovoltaic assembly and a packaging process of the same. The photovoltaic assembly comprises a glass panel, a battery panel, a self-adhesive protective layer, an EVA material layer and a back plate which are sequentially stacked; the battery panel is attached to one side of the self-adhesive protective film; the other side of the self-adhesive protective film is connected with the back plate through the EVA material layer; the self-adhesive protective film is connected with the glass panel through an EVA sealing strip; and the EVA sealing strip is disposed at the border position of the self-adhesive protective film and the glass panel; and the EVA sealing strip, the self-adhesive protective film and the glass panel form a sealed cavity. The sun facing side of the photovoltaic assembly of the present invention is not covered with a bonding layer, so that the power generation efficiency of battery sheets is not affected by the discoloration of the bonding layer during a long-term working process; the packaging process of the photovoltaic assembly reduces the complexity of production procedures and decreases production costs. The battery panel can be easilytaken out and recovered after the photovoltaic assembly is damaged, and therefore, environmental pollution caused by the discarded photovoltaic assembly can be decreased.

Description

technical field [0001] The invention belongs to the field of photovoltaic solar cells, and in particular relates to a photovoltaic module and a packaging process for the photovoltaic module. Background technique [0002] Solar energy is a sustainable energy source. Photovoltaic modules can be used to convert solar energy into electricity for human use. Photovoltaic modules will not produce any form of pollution during the entire production process. It has high quality requirements and can guarantee the effective use time of photovoltaic modules to reach 20-30 years. [0003] The quality of photovoltaic modules is directly affected by its processing method. The packaging method of photovoltaic modules in the prior art mainly consists of several steps of welding battery sheets into strings-laying of battery strings-lamination to form a complete photovoltaic module. However, due to the The quality is small and the thickness is very thin. This kind of processing technology is p...

AI Technical Summary

Problems solved by technology

[0003] The quality of photovoltaic modules is directly affected by its processing method. The packaging method of photovoltaic modules in the prior art mainly consists of several steps of welding battery sheets into strings-laying of battery strings-lamination to form a complete photovoltaic module. However, due to the The quality is small and the thickness is very thin. This kind of processing technology is prone to battery chip fragmentation during the process of lamination and welding. It cannot be taken out, which increases the defective rate of photovoltaic modules and reduces the photoelectric conversion efficiency of photovoltaic modules with the same area. After a long time of use in traditional battery modules, the glue layer that fixes the cells will change color, resulting in the failure of the cells. The absorption efficiency of light is reduced, and the adhesion of the adhesive layer connecting the layers of the photovoltaic module will also decrease after long-term use, and the layers will be detached, resulting in the failure of the normal use of the photovoltaic module. In order to solve this problem, this The invention provides the following technical solutions

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