As a core component of photovoltaic (PV) modules, encapsulation films for solar panels do not directly generate electricity but play a crucial role in determining the module’s efficiency, lifespan, and reliability. The main types include ethylene-vinyl acetate copolymer (EVA), polyolefin elastomer (POE), and EVA-POE-EVA three-layer co-extruded composite film (EPE).
EVA is the most traditional and widely used encapsulation material with relatively low cost. However, prolonged exposure to ultraviolet (UV) radiation can cause aging and yellowing, resulting in reduced light transmittance. POE, on the other hand, offers better resistance to UV and yellowing compared to EVA, but it is prone to issues such as bubble formation and displacement. EPE was developed to combine the advantages of both EVA and POE, yet it carries a potential risk of delamination between layers.
When cutting off the excess encapsulation film from solar panels, laser cutting technology can be used to protect the solar cells from mechanical damage. As a non-contact process, laser cutting introduces no mechanical stress, effectively preserving the integrity of the cells. It allows for precise removal of excess film along the edges, preventing uneven encapsulation caused by material buildup. Moreover, laser cutting provides exceptional flexibility—given the rapid iteration of PV technology, it can easily adapt to changes in cell size and module design, as well as meet the needs of customized orders.
In the laser cutting process of encapsulation films, the laser controller plays a central role. The performance of different controllers directly affects cutting quality, efficiency, and module reliability.
In the laser cutting process of encapsulation films, the laser controller plays a central role. The performance of different laser controllers directly affects cutting quality, efficiency, and module reliability.
The ZY4164G-2000 Panoramic Vision Laser Control Board, developed by Shenyan CNC, offers significant advantages over conventional laser control board. The Shenyan Panoramic Vision Laser Control Board delivers extremely high precision, maintaining an error margin within ±0.5 mm, ensuring accurate cuts without damaging the solar cells. Equipped with a 20-megapixel high-performance camera and a powerful image processing algorithm, it can precisely identify distances and generate accurate data to guide the laser head for precise cutting. Furthermore, the Shenyan Panoramic Vision Laser Control Card boasts high stability, enabling long-term, efficient operation and ultimately improving production capacity
The laser control card features outstanding image recognition and processing capabilities, enabling one-time full-format matching and cutting. With its diverse edge-detection functions and panoramic vision recognition technology, it can efficiently accomplish complex cutting tasks, making it ideal for large-format and high-precision laser cutting applications.
The laser control board also offers a powerful template function, supporting multi-template recognition and deformable template matching. The laser controller allows for hole cutting and regional matching based on different templates, ensuring high flexibility and adaptability in various production scenarios.
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