Double-glass photovoltaic module and manufacturing method thereof

Abstract

The invention relates to a double-glass photovoltaic module and a manufacturing method thereof. The manufacturing method comprises the steps of: laying upper layer glass, an upper layer encapsulatingadhesive film and a battery string, and fixing a position of the battery string by using a high temperature adhesive tape; welding a third bus bar, laying small adhesive film strips and small insulating strips at positions 3-5 mm away from an interconnection strip, and folding the interconnection strip onto the battery string for welding; welding first and second bus bars; laying small adhesive film strips and small insulating strips at positions 3-5 mm away from an interconnection strip, folding a second / third / fourth / fifth interconnection strip onto the battery string, and welding every two strings by means of the first bus bar, and welding the second bus bars outwardly at positions 8-10 mm away from the battery string; and covering a lower layer encapsulating adhesive film and lower layer glass and carrying out lamination. The double-glass photovoltaic module overcomes the problem of water vapor penetration of a backboard of the conventional module, is high in mechanical strength, saves the cost of using an aluminum frame, and solves the problems of series and parallel extension, delamination or lack of glue, air bubbles and the like in the lamination process.

Description

technical field [0001] The invention belongs to the field of photovoltaics, and in particular relates to a double-glass photovoltaic module and a manufacturing method thereof. Background technique [0002] Photovoltaic modules have been widely used in photovoltaic power generation. Traditional photovoltaic modules are laminated and bonded together by glass + adhesive film + battery string + adhesive film + backplane under certain temperature pressure and vacuum conditions, and then aluminum frames are placed around them. Mount the junction box on the backplane to get. The water vapor transmission rate of the backplane of this module is high, the aging resistance is weak, and the mechanical strength is not enough. The industry has begun to use glass instead of insulating backplanes to form double-glass photovoltaic modules. The upper and lower sides of the modules are made of transparent EVA film and transparent glass, which lacks the reflection function of the backplane of ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of the low power of photovoltaic modules in the prior art, a method for manufacturing a double-glass photovoltaic module is provided, which can improve the power of photovoltaic modules more effectively by cooperating with grid high-reflective crescent tempered glass, including the following steps:

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