Solar panels are the core material of photovoltaic systems. The quality of solar panels on the market is also uneven. If there is no professional equipment and expertise for the time being, how to distinguish the quality of PV solar panels?

  a look at the color

  Generally speaking, the appearance color of monocrystalline silicon and polycrystalline silicon solar panels is blue, and it is relatively uniform light blue or sky blue. If the color of the battery panel is dark and the colors are different, it must be the workmanship is not meticulous.

  A second look at the surface

  The tempered glass surface of the battery panel should be flat and free of foreign matter. In order to improve the production speed, some small manufacturers do not clean up the silica gel dripping on the surface of the tempered glass. If the silica gel is not cleaned, it will affect the power generation efficiency.

  Three looks at the battery

Each battery sheet on the battery board is complete and is cut as a whole. However, many informal manufacturers in the market use broken cells to splice together to form seemingly complete cells for welding. We are watching to see if there are any traces of cutting. This method has great risks. It may not be obvious in the initial stage, but the spliced ​​cells are easy to be disconnected again later, which affects the use of the entire cell board. Of course, this situation is difficult to detect with the naked eye.

  Four looks at silicone

  Check whether the silica gel around the back is evenly distributed and whether it penetrates tightly into the gap between the back panel and the frame.

Carefully observe whether there is any leakage in the string welding of the battery. At the same time, it is also necessary to check whether the arrangement of the cells is regular.

Five looks at the junction box

  Finally, check whether the junction box is firm and whether the cover of the junction box can be firmly and tightly attached to the junction box. See if the wire and wire lock can rotate freely and whether they can be tightened.

  Six looks at the price

  If all of the above are hard to tell apart. The safest way is to compare prices. The price of domestic solar panels fluctuates. Although it is not absolute, there will be a general range. If the price given by the manufacturer is far lower than the market price, then we have to distinguish carefully. Finally, the manufacturer needs to issue the corresponding battery board qualification certificate, qualification document, etc.

 Jiaxing Fuying Composite Materials Co., Ltd. is a mono solar panels manufacturer and supplier in China. All of the company's mono solar panels factory produces double glass modules, PV solar panels other photovoltaic products, and PVB composite functional films.