Previously, the Ministry of Housing and Urban-Rural Development issued two development plans, namely the "14th Five-Year Plan for Housing and Urban-Rural Construction Science and Technology Development" and the "14th Five-Year Plan for Building Energy Conservation and Green Building Development". The plan proposes to carry out efficient and intelligent buildings, photovoltaic integrated utilization, etc., and formulates specific development goals.
With the advancement of the "dual carbon" goal and the support of national policies, photovoltaic power generation is constantly exploring new application scenarios to give full play to the use value of many scenarios such as production and life. Among them, the integrated building photovoltaic (BIPV) project, which has both power generation function and building material attributes, has attracted more and more attention in the field of photovoltaic power generation.
Due to the white light reflection on the rooftop of traditional distributed power stations, BIPV cells and modules have a tendency to darken. The all-black module includes all-black cells, all-black frames, all-black backplanes, all-black busbars, aesthetic glass and other components, which can finally achieve a pure all-black visual effect. The black roof and building façade are not only green, stylish and beautiful, but also generate electricity, so the all-black module is the perfect choice for BIPV.
With the dual goals of being green and efficient, the all-black module needs to meet the following requirements:
Consistency in the appearance of the components
The all-black module needs to control the chromaticity uniformity of the all-black, and use the all-black component frame, backplate, and adhesive film to ensure that the black module maintains a high degree of stability and consistency in hue, brightness, and uniformity. This not only prevents the occurrence of light pollution, but also presents a complete, harmonious appearance of the module.
Increase the power of the module
When black encapsulation material is used, the power growth space of the module will be limited by the inherent characteristics of black such as light absorption and heat absorption. For example, conventional black films are less effective than clear and white films. In addition, conventional black backplane packages can cause problems such as easy aging and heat generation, which can affect the overall efficiency. Therefore, increasing the power of black modules plays a crucial role in improving power generation efficiency.
In order to meet the application requirements of all-black components, as one of the first to haveAn enterprise with the ability to mass-produce black high-reflective adhesive film——Lushan New Materials has been launchedHigh appearance, high power and high reliabilityThree features of black highly reflective encapsulant.
Good looks
Due to the spacing between the cells and between the cells and the bezel of the module, it is encapsulated with a black adhesive film and a black bezel to achieve an all-black appearance.
Lushan black high-reflection encapsulation film has uniform color after chromaticity adjustment and dispersion treatment, with high blackness, and no abnormal green, blue and red phases in sunlight. In the application, it can be used for the packaging of conventional black components and BIPV components, and the black color of the module and the building is more harmonious and beautiful.
High power
When the black backplane is used for black modules, there is strong absorption in both the visible and near-infrared bands, and the light absorption utilization rate of crystalline silicon cells is reduced. At the same time, the light energy absorbed by the black backplate will be converted into heat energy, resulting in an increase in module temperature, a significant decrease in module output power, and a consequent decrease in power generation efficiency.
Lushan black high-reflection encapsulant has high reflectivity in the long wavelength band, which improves light utilization and can effectively reduce packaging loss. At the same time, the black highly reflective film can also reduce the power generation temperature of the module, thereby improving the power generation efficiency. According to the test, the power of Lushan black high-reflection encapsulation film is increased by 2 compared with that of conventional black modulesMore than 2%.
High reliability
Due to the addition of pigments to the black encapsulating material, there is a possibility that the pigment precipitation may cause the blackness to change. Lushan black high-reflection encapsulant film products have been tested by DH, PCT, UV, dry heat aging, and outdoor for 2 years, and there is no appearance abnormality and pigment precipitation, and the blackness changes 1.
In addition, Lushan black high-reflection encapsulant film has strong adaptability, simple lamination process, and can effectively avoid problems such as displacement, wrinkles, and overflow through surface pretreatment technology.
In the future, the photovoltaic industry will continue to pursue green aesthetics and efficient experience. Lushan New Materials will also continue to create high-quality adhesive film packaging materials to meet the needs of the integration of technology and humanity in the photovoltaic industry.
Disclaimer: This article is for informational purposes only and does not constitute investment advice.