Solar cell packaging board and its preparation process, solar cell and its packaging process

Abstract

The invention relates to the technical field of a solar cell, and particularly to a preparation process of a solar cell packaging board. The preparation process comprises the steps of supplying a substrate layer which has a first surface and a second surface that are oppositely arranged; applying a first coating on the first surface; applying a third coating on the second surface; forming a barrier layer on the surface, which is far from the first surface, of the first coating through a film coating process; applying a packaging layer on one layer, which is far from the first coating, of the barrier layer; and applying a second coating on one layer, which is far from the barrier layer, of the packaging layer, wherein the second coating is a wearing-resistant coating. The preparation process according to the invention saves time and realizes high flexibility. The solar cell packaging board formed through the preparation process has advantages of high steam blocking performance, high anti-dazzle performance, high wearing resistance, high scratch resistance, low weight, small thickness, high flexibility, higher light transmittance, simple structure, low cost and high product yield. Furthermore a requirement for a use time limit of the solar cell can be satisfied.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a solar cell packaging board and a preparation process thereof, a solar cell and a packaging process thereof. Background technique [0002] As a new type of solar cell, flexible thin-film solar cell has been paid more and more attention by people because of its advanced technology, excellent performance and wide application. [0003] Due to the particularity of the application environment of flexible thin-film solar modules, the solar front sheet is required to have certain light transmittance, aging resistance, insulation, self-cleaning, flame retardancy, and flexibility. Thin-film battery) is sensitive to moisture, and the flexible solar front sheet must also have high water resistance, and the WVTR is less than 5x10-3 (g / m2.day). [0004] At present, the flexible solar front panel material uses a composite film, including ETFE film, UV barrier film, water blocking film, P...

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Problems solved by technology

[0007] (1) The technical problem to be solved by the present invention is: the existing solar cell encapsulation front plate has the problems of poor water vapor barrier effect, not aging resistance, short service life, poor light transmission effect, not wear-resistant and scratch-resistant, and serious glare problems ; At the same time, due to the poor light transmittance of ordinary solar cell transparent packaging films, chemical substances are easily precipitated, and the aging resistance effect is poor, the process operating temperature is high (generally above 140 ° C), and the process time is long (generally lamination time 20 -30min), some adhesive films also need special equipment, so the packaging process is complicated, the process time is longer, and the cost is higher

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