Solar panels are optoelectronic semiconductor sheets that directly generate electricity from sunlight. They play a huge role in various fields of new energy. They are widely used and are used in photovoltaic products. The quality of solar panel components is directly related to the energy efficiency of the products used. Nowadays, there are many manufacturers of solar panels, and some low-quality products are also mixed into them. It is not easy to choose good-quality solar panels. Here we will tell you how to judge the quality of solar panels.
Observe the front of the solar panel
First of all, carefully check the surface of the tempered glass, which is also where some solar panel manufacturers are careless. If the surface of the tempered glass is accidentally dripped with silica gel, it should be cleaned in time, otherwise it will affect the power generation efficiency of the battery panel.
Observe the battery of the solar panel
In order to save costs, many informal manufacturers actually use damaged cells to assemble them to form seemingly complete cells. In fact, there is a great risk. There may be no problems at the beginning, but the spliced cells are very easy. It will cause breakage under long-term use, thereby affecting the use of the entire battery panel. When the temperature is too high, fire will occur, threatening the safety of pedestrians.
Observe the back of the solar panel
The back of the solar panel should be marked with technical parameters, such as: open circuit voltage, short-circuit current, working voltage, etc. Secondly, it depends on the pressure-bearing effect of the back of the solar panel. Such solar panels are classified as substandard.
Observe the junction box
The junction box is a connector of the solar cell module. The main function of the solar photovoltaic junction box is to export the electric energy produced by the solar cell module through the cable. Whether the junction box is firm is also related to the working efficiency of the solar panel. The cover of the junction box should be firmly and tightly attached to the junction box, and the outgoing wire lock should rotate freely and tighten.
When purchasing solar panels, you must pay attention to the above four points. In addition, you must choose according to the configuration you need, so that the quality of the selected solar panels is more guaranteed, safer and more secure.