What are the effects of bulging, pits and grooves on the backsheet of solar PV modules?

Bulging may have the risk of TPE delamination, resulting in wet leakage, pits, grooves, fear of crushing the cell, and the impact of appearance.

This is because the manufacturer's machine is encapsulating the solar panels.

If it is cleaned, the pressed board is flat, without dents and pits, if it is near the lead, it may be caused by the lead not being flattened. There are also some long ones, which may be caused by the back plate being too thin and the laminator pressure is too high. It is best to attach ** to better judge what is causing it.

The backplate is the main protective material, if only the backplane material is broken, it does not hurt the battery part in the short term.

However, at this point, it begins to receive environmental corrosion, EVA will quickly age, crack or detach, and then corrode the battery part, and the corrosion will expand and the component will be short-circuited and fail.

There are probably several situations in which the module occurs: first, the module is produced in the manufacturing process without paying attention to the bare hands touching the cell, EVA and TPE, causing pollution, the dirt appears in the process of use, the chemical reaction of the dirt appears bulging, and the foreign matter in the module during the production process can also lead to bulging and pits after lamination, and there is also the laminator such as the temperature and time are not set accurately can also lead to this situation. If there is a bulge, you should first observe the cell at the depression of the bulge to see whether the cell is fragmented or cracked, whether the backplate is damaged, and whether there is an air bag inside the indentation of the module.

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Will the surface depression of the photovoltaic group pose pei empty parts affect the surrounding cracks? Normal photovoltaic panel surface cracking, does not affect the use, but will affect the life, so he needs to carry out a technical treatment when he is blind, and carry out a waterproof coating can continue to use, because the photovoltaic panel power generation is not under the surface of the protective layer is not the surface of the glass or composite material for power generation, when there is a crack, we can repair it in time, if the broken foot is serious, If the power generation base on the lower level is destroyed, it will no longer be usable. Hope mine is helpful to you.