What is the function of EVA film for photovoltaic panels

Photovoltaic panel EVA adhesive film (ethylene-vinyl acetate copolymer film) plays a vital role in photovoltaic (solar photovoltaic power generation) modules. Its main functions include protection and bonding. First of all, EVA adhesive film is used as an encapsulation material to effectively protect photovoltaic cells from environmental factors such as moisture, dust, ultraviolet rays, and mechanical shock. This protective effect helps to extend the service life of photovoltaic modules and ensure long-term stable power generation performance.

Secondly, EVA film has a good light transmittance, which can effectively transmit sunlight to photovoltaic cells and improve the photoelectric conversion efficiency. At the same time, the adhesive properties of the EVA adhesive film enable it to firmly bond the photovoltaic cells with the glass encapsulation layer to form an integral structure, thereby enhancing the mechanical strength of the photovoltaic modules. In addition, EVA film has good thermal stability, which can ensure stable performance under high temperature and harsh climatic conditions.

In summary, EVA film not only plays an important role in the packaging and protection of photovoltaic modules, but also directly affects the working efficiency and overall performance of photovoltaic cells. Therefore, the selection of high-quality EVA adhesive film is crucial for the durability and efficiency of the photovoltaic power generation system.