How Do You Prevent Micro Cracks on Solar Panels? What Is The New Technology？

In the production, transportation, and installation of solar panels, "micro cracks" have always been an unavoidable danger.

As we all know, solar panels are typically composed of crystalline silicon cells connected in series. For example, in a 6x10 panel array, there are 6 rows of cells continuously generating electricity. However, if one of the cells is cracked and damaged, it directly affects the nearby current pathways, causing at least one-third of the cells to stop working, leading to a significant decrease in the overall efficiency of the solar power station.

Usually, micro-cracks in solar panels are caused by two main factors: product surface stress and high-temperature operation. because the cracks are too subtle, it is difficult for the human eye to determine whether a panel has cracked. Therefore, many determination methods and equipment such as X-ray inspection are widely used.

However, for the PV Module manufacturing industry, compared with relying on remedial measures, the primary focus is on how to minimize the possibility of micro-cracks from the source. The ability to control the operating temperature of solar panels is considered a basic feature for most compliant products on the market. What is more innovative is the technological competition among manufacturers during the production process.

Currently, many leading solar panel manufacturing companies have developed various new technologies to prevent micro-cracks, such as:

LONGi's Intelligent Welding Technology Without Micro-fractures, mainly applied to flagship series like Hi-MO5 and Hi-MO X6. It uses an integrated segmented welding strip to maximize the utilization of direct sunlight while achieving micro-distance interconnection of cells. After multiple verification, applying this technology can further improve the efficiency of panels by 0.3% abs. compared to conventional multi-busbar products.

TW Solar's Non-Damaging Cutting Technology, mainly applied to series like TNC G12R. This technology prevents mechanical damage during the cutting process, resulting in smooth and burr-free cutting surfaces, significantly reducing the risk of cell Micro-fractures by over 50% and reducing the risk of micro-cracks.

JA Solar's Zero-Gap Flexible Interconnection Technology (GFI), mainly applied to DeepBlue 4.0 X series. Through circular welding strips combined with special buffering designs, this technology eliminates the risk of Micro-fractures at conventional high-density module cell connections, achieving zero-gap, crack-free connections, enhancing module power and efficiency while ensuring stability and reliability. Additionally, JA Solar, in collaboration with TÜV Nord, conducted a one-year verification test at the CPVT Yinchuan National PV Outdoor Verification Base, showing that this series of solar modules has about 3.9% higher power generation per watt than p-type PERC solar panels.

Additionally, Trina Solar's Non-Damaging Cutting (NDC) Technology is mainly applied to the 580W Supreme Series, while Canadian Solar's symmetric design of cell patterns for N-type TOPCon cells, such as TOPBiHiKu6 and TOPBiHiKu7 series, further reduces mechanical stress, improving resistance to Micro-fractures.

Furthermore, special attention to behavior norms during transportation and installation is crucial, and finding a professional agency is essential to ensure long-term product quality assurance.

Disclaimer: The information, including but not limited to text, images, and audiovisual content, provided on this website is sourced from the internet and is intended for educational and informational purposes only. It does not constitute any investment advice. If there is any infringement, please contact us promptly, and we will remove it immediately.