Frameless film photovoltaic cell pack

Abstract

The invention relates to a frameless film photovoltaic cell pack and belongs to the technical field of solar photovoltaic power generation. In order to prevent aqueous vapor from entering the cell pack so as to better solve the seal problem of the cell pack, the frameless film photovoltaic cell pack is designed. The periphery of a film photovoltaic cell core board is subjected to film removing treatment, and packaged as a whole through an adhesive film, a front board and a back board, the position, between a shady face and the back board of the photovoltaic cell core board, is coated with a composite film layer formed by sequentially stacking an insulated paint film, butyl rubber and the adhesive film. The composite film layer is arranged on the shady face of the photovoltaic cell core board, the periphery of the cell pack is coated with the butyl rubber, and two protective layers are formed, so that the photovoltaic cell pack is good in insulativity and airtightness, electric leakage is prevented, the aqueous vapor is prevented from entering the interior of the cell core board, the safety of the cell pack can be guaranteed, and the service life of the cell pack is also prolonged.

Description

technical field [0001] The invention relates to the technical field of photoelectric conversion, in particular to a frameless thin film photovoltaic cell assembly. Background technique [0002] Frameless thin-film photovoltaic cell modules are widely used in building integrated photovoltaics. However, technical issues such as the safety of photovoltaic modules and their edge leakage have always attracted much attention. [0003] The structure of the frameless thin-film solar cell encapsulated by glass is: front glass + adhesive film + thin-film battery core + adhesive film + back glass. There will be phenomena such as insufficient pressure and insufficient bonding strength of the adhesive film. Moreover, during the long-term use of the battery module, moisture will penetrate into the battery through the PVB or EVA adhesive film, affecting the electrical performance of the battery. In order to prevent water vapor from entering the battery assembly, the edge of the battery as...

AI Technical Summary

Problems solved by technology

The existing technical solution of coating the outer side of the thin-film battery core plate and the inner side of the glass edge of the back plate for sealing, because the sealing performance of butyl rubber is better than that of EVA and PVB films, it can effectively alleviate the leakage problem at the edge of the battery module. However, the width of the butyl rubber seal is limited by the size of the components and cannot be made very wide. After the battery components are used for a long time, water vapor will still penetrate into the battery, and after the battery components are laminated, the width of the butyl rubber in them varies. Affect the appearance

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