When it comes to photovoltaic products, I believe it has become a household name. There are photovoltaic products in ground photovoltaic power stations, BIPV for building integration, solar power highways, energy-saving vehicles, etc. It is believed that the application of photovoltaics will be more extensive in the near future.
Photovoltaic modules are the core components of solar power generation systems, and their service life has a certain relationship with the lamination process, but it also depends on the performance of the raw materials used, the most critical of which is the photovoltaic backsheet. As the outermost layer of the module, the photovoltaic backsheet is in direct contact with the external environment and can withstand outdoor wind, rain, exposure, corrosion and pollution; it is also in contact with the internal packaging material to prevent leakage from the outside and block water vapor from the inside .
Photovoltaic backsheets are composed of polymer materials. Some photovoltaic backsheets will expose obvious quality problems in advance after being used for a period of time, and even lead to module failure. One of the serious problems exposed by the current photovoltaic backplane is the cracking of the backplane. The research found that the backplane cracking problem is mainly concentrated in the 3A backplane. A photovoltaic power station using a 3A backplane has a large number of microcracks on the surface of the backplane after one year of installation, and the cracking ratio of the backplane has exceeded 40% after four years of operation. Around 2016, several GW-level photovoltaic power plants around the world were affected, including domestic western power plants and overseas power plants, seriously affecting the investment income of power plants.