Sealing sheet for high reflection gain type solar cells and applications

摘要

A highly reflective gain type photovoltaic packaging adhesive film and usage are provided. The packaging adhesive film is composed of an packaging layer and a reflecting layer, wherein the packaging layer has a thickness of 200 to 500 µm, and is made by mixing a first primary resin, a modified auxiliary, an ultraviolet auxiliary, an anti-thermal oxidation ageing agent and an initiator and melting and coat casting the same at 60° C to 200° C to form a film; and the reflecting layer has a thickness of 5 to 200 µm and is made by mixing a second primary resin, an auxiliary resin, a first filler, a second filler, modified auxiliary, a diluent and an ultraviolet auxiliary, an anti-thermal oxidation ageing agent and an initiator and coating the same on the surface of the packaging layer and curing the same at 30°C to 150°C. With a simple preparation process, a low cost, and an excellent product performance, the packaging film not only provides an effective gain effect for a double-sided crystal silicon battery module, but also provides a basis for optimizing the cost of the gain-type packaging material for a single-sided crystal silicon battery module, and at the same time, providing a guarantee for reliability of crystal silicon photovoltaic modules in long-term outdoor application.