A kind of preparation method of solar double glass module

Abstract

The invention discloses a preparation method for a solar double-glass component. The method comprises the following steps: paving a glass layer, an EVA coating layer and a battery layer; performing EL test for the first time; laminating; performing EL test for the second time. A plurality of scratches are horizontally and longitudinally carved on the upper surface of the EVA coating in contact with a battery piece; a circle of scratch is carved along the edge of the battery piece; a layer of coating is paved at each of the four corners; in a laminating stage, the vacuum pumping is firstly performed, and then the vacuum pumping for a lower chamber is maintained, an upper chamber is aerated, the pressure is maintained and the coating is heated and molten. According to the preparation method, the directionality of EVA contraction can be reduced, the displacement resistance of the battery piece can be increased, and meanwhile, the gaps between the glass and the battery piece and between the battery pieces can be more effectively filled, so that the interior and four corners of the component can be prevented from generating bubbles, the yield of the products is increased, the operation is simple and the method is suitable for volume production.

Description

technical field [0001] The invention relates to the field of preparation of solar photovoltaic components, in particular to a preparation method of solar double-glass components. Background technique [0002] With the advancement of solar cell technology and the reduction of material costs, photovoltaic power generation technology has entered maturity, and solar photovoltaic products have gradually developed from special specialized uses to market-oriented consumer products, and their application range has expanded to various fields. Commonly used packaging materials for solar double-glass modules mainly include PVB film and EVA film. [0003] Using PVB film for double-glass module encapsulation generally requires fixing the cell and glass on a laminator. At this time, the module sample is not easy to cool and transparent, and needs to be reheated and then cooled. Therefore, it is re-packaged in an autoclave at high temperature and high pressure, and taken out. Post cooling...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new preparation method for solar double glass modules, which can effectively solve the problems of cell displacement and bubbles in the module, for the problems of cell displacement and film bubbles that are prone to occur in conventional EVA double glass modules. Improve product yield