Thin-film solar cells have excellent resistance to moisture and heat and cold resistance, and their large-span environmental adaptability has made them well received and favored by customers in all regions of the world. Whether it is cold and dry high-latitude European regions, or the hot and humid equatorial regions, the large-scale successful application of thin-film solar cells, and can guarantee more than 20 years of outdoor life. In order to adapt the thin-film module to its environment in practical applications, this type of product has strict inspection standards in the process of certification approval. For example, according to the certification test system of the International Electrotechnical Commission, products must withstand “wet-heatâ€, “wet-frozen†and “cold-heat cycle†tests under extremely severe conditions. At the same time, for the certification test of the above film products, it must also meet the leakage safety standards, the output power of the standard, the appearance of the machine to reach the standard before it can be determined as a qualified product. How can amorphous silicon solar thin-film solar modules withstand long-term moisture erosion and work in high temperature and cold environments? This is inseparable from its unique production process and excellent structure. The thin film battery module is generally a double-layer laminated glass structure, that is, both the front panel and the back panel of the module are glass and laminated with a thermosetting adhesive film. The top of the cell is covered with a glass back plate to protect it, and the top and bottom glass are glued together with a transparent polymer material, which forms a practical and weatherable "film module". The combined structure of the double-sided glass of the module provides a good mechanical performance for the thin-film battery. In addition, the glass back-sheet and the encapsulating film, which have good thermal expansion characteristics, make the module more flexible and ensure that it will work without damage under high and low temperature environments. The modified packaging material has excellent moisture resistance and aging resistance, and when it is tightly adhered to the glass surface, it provides a safety basis for the component to withstand the hot and humid environment. During the manufacturing process, the conductive film layer of the thin film battery generally covers the entire glass substrate, including the edge portion of the substrate. In order to circumvent the edge leakage hazards that may occur when the module is operated under high system voltage, it is common to apply measures such as sandblasting, laser, etc. before the assembly to perform insulation treatment and surface treatment on the film layer at the edge of the battery sheet. The high-quality surface treatment can make the encapsulant film more closely adhere to the edge area of ​​the module, effectively resist moisture erosion to the battery sheet for a long time, and work more stably in a complicated and changeable external environment. At present, many domestic thin-film battery manufacturers have already reached a consensus on the importance of environmental aging of thin-film modules, and have invested a lot of research funding to carry out independent research and development of the packaging process in order to further reduce production costs and improve product packaging levels. These initiatives include special edge protection of components, the use of new glass and packaging materials, and optimization of packaging processes. It is foreseeable that the future potential of thin-film batteries in reducing costs will make them an important position in photovoltaic applications. Currently, power-based applications are mainly concentrated in three areas: traditional commercial application markets, such as communications, traffic signals, and pipe network protection; power supply systems in remote areas and photovoltaic power generation systems connected to grids. Only the PV application plans that have been implemented and are currently being implemented by the countries present provide huge market opportunities, and can be produced by various photovoltaic cell factories worldwide for more than 10 years. The silicon-based thin-film solar cell industry is a high-tech industry, and its development and growth require unremitting efforts and strong government policy support. It is hoped that the country will formulate more effective measures and plans and give greater support and protection to the high-tech industries in terms of policy orientation, finance, and taxation, so as to promote the development and technological advancement of the silicon-based thin film battery industry in China and meet international challenges.
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