Fine Cracks on Solar Panels Need to Be Taken Seriously
Cracks, hot spots, and yellowing on solar panels can all lead to a decrease in power generation, and even pose risks of short circuits or fires.
Crystalline silicon solar cells are about 200 microns thick, so they can sometimes be damaged during transportation, installation collisions, or inadequate maintenance, resulting in small cracks. These cracks are generally not visible to the naked eye and can easily be overlooked without proper equipment for detection.
However, a solar power system consists not only of solar cells. After the solar cells convert sunlight into DC electricity, the inverter then converts it into AC electricity, which is ultimately fed into the grid or used locally. Cracks are one of the main causes of temperature abnormalities in solar panels. Heat tends to spread through the broken areas of the solar cells because the cracks impede the flow of current. In severe cases, this can lead to localized damage, and the current will concentrate in other areas, causing the solar panel's temperature to rise.
Therefore, the fine cracks on solar panels need to be taken seriously.