EVA or POE, how to choose the encapsulation film for photovoltaic double-glass modules?

EVA stands for ethylene-vinyl acetate copolymer, and POE stands for ethylene-octene copolymer, which are two commonly used encapsulation films for double-glass modules. Now some manufacturers choose EVA for packaging, some manufacturers choose POE for packaging, and some manufacturers start to use EVA+POE hybrid packaging, then choose EVA or POE for double-glass components, which is the best solution? It is worth thinking about by people in the industry.

Solar cell modules (also called solar panels, photovoltaic modules) are the core part of the solar power generation system.

Photovoltaic modules, as the core equipment of photovoltaic power plants, can be divided into single-glass modules and double-glass modules from the perspective of packaging. With the development of the photovoltaic power generation industry, double-sided batteries have developed rapidly. In the current market, most of the double-sided battery components are packaged with double glass, and a few are packaged with transparent backplanes.

Bloomberg New Energy Finance (BNEF) pointed out that by 2022, the market share of bifacial battery modules will exceed 90%. At the same time, the market share of transparent backplanes is relatively small, and double-glass modules will become the mainstream of the module market.

The quality of battery packaging directly affects the power generation efficiency and service life of photovoltaic modules. Among them, the packaging film has a great impact on the performance of PID, and the choice of film material is very important.