For the hot spot effect of thin film photovoltaic products, the International Electrotechnical Commission has formulated strict certification test standards, and the products must withstand the test of the hot spot effect under extremely harsh conditions. After the thin-film photovoltaic module has passed the hot spot durability test, the visual inspection is first carried out, and any cracks, bubbles or delamination are recorded or photographed. If serious appearance defects specified in the standard are found, such as: broken, cracked, bent, irregular or damaged outer surface; any thin film layer in the effective working area of the module has more than 10% of the cell area, visible corrosion, Formation of continuous bubbles or delamination between the edge of the component and any part of the circuit, etc., loss of mechanical integrity, resulting in the installation or operation of the component being affected, is considered unqualified. If there are appearance defects but do not belong to the serious appearance defects mentioned above, such as: any film layer in the effective working area of the component has voids and visible corrosion, output wires have visible corrosion, etc., take pictures and record them; if in other subsequent tests If the experiment has no effect, it is considered that the thin-film photovoltaic module has passed the hot spot effect test. If it is affected, two other modules are selected to re-do the hot spot effect test. In addition, the attenuation of the maximum output power of the module under standard test conditions cannot exceed 5% of that before the test; the insulation resistance should meet the same requirements of the initial test.
Customers can rest assured that at present, many domestic thin-film module manufacturers, including Pule New Energy, have passed the most authoritative and strictest product performance and safety certification in the world. It should be noted that during the design, construction and grid-connected use of photovoltaic power stations, the impact of shading on photovoltaic power stations and photovoltaic systems should be fully considered. The impact of the photovoltaic system is reduced to a minimum.