Photovoltaic module quality appraisal

Photovoltaic modules, also known as solar panels, are devices that convert solar energy into electrical energy. It consists of multiple photovoltaic cells connected in series or parallel to form a photovoltaic array, which can convert sunlight into direct current. Photovoltaic modules are generally composed of materials such as aluminum alloy frames, tempered glass, polyimide films, and silicon solar cells. The main purpose of
photovoltaic modules is to convert solar energy into electrical energy to generate electricity. In areas with unstable power and poor infrastructure, photovoltaic modules can be used as a clean and reliable way to generate electricity. When many countries improve rural energy, they will use photovoltaic power generation and put centralized or distributed photovoltaic modules into villages without power supply to solve local power shortages.
In photovoltaic module quality appraisal cases, Zhongke Testing can provide photovoltaic module quality appraisal services.

According to different manufacturing processes and materials, photovoltaic modules are mainly divided into crystalline silicon modules and thin film modules.
crystalline silicon components can be divided into monocrystalline silicon and polycrystalline silicon.
thin film modules can be divided into silicon-based thin film modules, copper indium gallium selenide thin film modules, gallium arsenide modules, and cadmium telluride modules.
Other batteries under research (or in the early stages of application) include: organic batteries, dye-sensitized batteries, perovskites and other new concept solar cells.

GB/T 18912-2002 Photovoltaic module salt spray corrosion test
GB/T 36567-2018 Photovoltaic module maintenance regulations
GB/T 43058-2023 Photovoltaic module ammonia corrosion test
GB/T 43057-2023 Photovoltaic modules Dynamic mechanical load test
GB/T 41314-2022 Coated glass for building photovoltaic modules
GB/T 39753-2021 General technical requirements for recycling of photovoltaic modules
GB/T 9535-1998 Crystalline silicon photovoltaic modules for ground use Design identification and finalization
GB/T 34160-2017 Testing method for photoelectric conversion efficiency of ground-based photovoltaic modules
GB/T 37882-2019 Silicone adhesive for back-rail bonding of ground-based photovoltaic modules
GB/T 37240-2018 Testing and evaluation method for light transmittance performance of crystalline silicon photovoltaic module cover glass
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Company A and Company B signed a "Residential Distributed Photovoltaic Project Equipment Supply Contract", which stipulated that Company A purchased main material equipment such as photovoltaic modules and inverters from Company B, and provided Company A with a new energy distributed photovoltaic power generation system with a total capacity of 25,000KW on the roof of the property, divided into 5,000 5KW rooftop distributed power stations.
B company sent photovoltaic panels and inverters to 31 households, but the remaining AC lines and DC lines for 31 households and grid-connected boxes for 30 households as agreed in the contract were not supplied at the time agreed in the contract, resulting in 31 households unable to complete the grid connection on time. The remaining 20 households only received photovoltaic panels, and there were quality problems with photovoltaic modules and inverters. Entrusted by the court, our company accepted the case and conducted an appraisal and analysis on whether there were quality problems with the "photovoltaic modules and inverters" involved in the case.
appraisal analysis results:
appraisal experts conducted a comprehensive technical analysis on the "photovoltaic modules and inverters" involved in the case and made the following suggestions and conclusions:
1, the photovoltaic modules involved in the case had quality problems;
2, the two burned inverters involved in the case had quality defects.
3, 31 contract users’ power generation loss in eight months was 127813kwh;