Single solar cells cannot be used directly as a power source. As a power source, several cells must be connected in series, in parallel, and tightly sealed into components. Photovoltaic modules (also called solar panels) are a core part of solar power systems and the most important part of solar power systems.
Its role is to convert solar energy into electrical energy, send it to the battery for storage, or push the load to work.
However, with the use of micro-inverters, the current source of the photovoltaic module can be directly converted into a voltage source of about 40V, which can drive the application of electrical appliances in our lives.
At the same time, PV modules are constantly innovating. Since PV modules are called China-made in the industry, they should be created in China, and then upgraded and innovative products of PV modules, such as photovoltaic ceramic tiles and photovoltaic color steel tiles, can directly replace traditional products. Building materials and tiles, as well as the function of photovoltaic modules, once entering the general market, will have a certain impact on photovoltaic modules and traditional building materials.
The difference between double glass photovoltaic components and common components
What is a dual glass PV module? As the name suggests, it refers to a composite layer consisting of two pieces of glass and a solar cell, and the photovoltaic cells are formed by a string of wires and a parallel connection to the lead ends. In recent years, double-glass PV modules are like a rocket, and the heat is so high. Why is it so popular? Next, let me introduce you to the advantages of dual-glass PV modules.
1. The normal component warranty is 25 years and the dual glass PV module is 30 years.
2, with a higher life cycle power generation, 21% higher than the average component.
3, the wear resistance of the glass is very good, but also solve the problem of sand-resistant components in the field. In the place where the wind is strong, the wear resistance of the double glass components is obvious.
4. The insulation of the glass is better than that of the backboard, which enables the double-glass component to meet higher system voltages, thereby saving the system cost of the entire power station.
5. The attenuation of the conventional components is about 0.7%, and the double glass component is 0.5%.
6. The fire rating of the double-glass component is upgraded from the C-class of the ordinary crystalline silicon component to the A-class, making it more suitable for use in residential areas, chemical plants and other areas where fire hazards are needed.
7. The water permeability of the glass is almost zero, and there is no need to consider the problem that water vapor enters the module to induce hydrolysis of the EVA film. The back plate of the traditional crystalline silicon solar module has a certain water permeability. The water vapor passing through the back plate makes the inferior EVA resin quickly resolve the acetic acid, which causes electrochemical corrosion inside the component, which increases the occurrence of PID attenuation and snail formation. The probability. It is especially suitable for photovoltaic power plants in the seaside, waterside and high humidity areas.
8. Glass is an inorganic silica, which is the same kind of sand as the ubiquitous sand. It has more weather resistance and corrosion resistance than any known plastic. Ultraviolet rays, oxygen and moisture cause the backsheet to gradually degrade, and the surface is pulverized and broken. The use of glass solves the weathering problem of components once and for all, and it also ends up the more weather-resistant dispute between PVF and PVDF, not to mention the weather-resistant, poorly water-resistant PET backsheet, coated backsheet and other low-end backsheets. . This feature makes the double-glass assembly suitable for photovoltaic power plants in areas with more acid rain or salt spray.
9. Double glass components do not require an aluminum frame unless there is a large amount of dew on the glass surface. The absence of an aluminum frame prevents the electric field that causes the PID to occur, which greatly reduces the likelihood of PID degradation.
The advantages of the double-glass PV module are introduced here. It is precisely because of these advantages that the double-glass photovoltaic module is loved by everyone and provides the best solution for high-quality photovoltaic power plants.
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