So Why 9BB cells is better than 5BB cells？
Currently, 90% of the solar panels sold in the market are 5BB. Why do so many people still start to pay more attention to 9BB on the market?
Is 9BB really better than 5BB?
For people who eager to get the answer, we can tell you a clear answer ——Absolutely! That’s why BougeRV is continuously upgrade and progress. Keep moving, we'll explain in detail below.
What is 9BB solar panel?
9BB means nine busbars.The module contained several cells with nine busbars are mentioned as a 9BB solar panel. In the 9BB solar cell, the space between the sink bars is greatly reduced. This means shorter current lengths, reduced losses and improved overall module performance. Then, let’s figure out what busbar is.
What is a Busbar？
Busbars are thin strips of metal that conduct electricity between cells. For most solar modules, busbars are usually aluminum, copper, tin or nickel.
9BB cells V.S 5BB cells
Above the below introduction, we all know that 9BB and 5BB are different on their busbar. But how’s the specific differences between them?
Less internal resistance loss on 9BB
The number of bus bars affects the resistance loss, and the increased distance between two metal contacts results in resistance loss. 9BB cells have more bus bars than 5BB cells, and reduce internal resistance loss by making the bus bar spacing smaller.
Smaller shade space on 9BB
The 9BB PV module can lower the present intensity between every cell thanks to the reduced busbar area, enhancing the PV module's potency.
As the busbars on the 9BB solar panel are thinner than those on the 5BB solar panel, their coverage on the cells is smaller, permitting more sunlight to achieve the cell. As a result, the 9BB includes a greater power production efficiency with the constant size.
Lower impact on 9BB when Micro-cracks
Micro-cracks is a type of solar cell degradation that can affect the energy production of a solar PV system, as well as its lifetime.
The solar panel is composed of cells in parallel which are divided into pieces by the busbars. When cracks appear in the same area, 1/9 of 9BB cells will be impacted while the 5BB one is 1/5. High-quality are the minimum things of BougeRV’s products.
Are 9BB solar panels better than 5BB solar panels?
In principle, the amount of busbars is proportional to the performance of solar panels. Beneath ideal conditions, the more busbars in a solar cell, the upper the solar module's performance. 9BB solar panels are better the an 5BB solar panels in ideal condition. BougeRV achieve the high efficiency at 22.5% of 9BB while the conversion rate of 5BB is 18%.
BougeRV with 9BB panels
As a sustainable energy brand, BougeRV keeps up with the innovation of solar panels to bring new experiences to our customers. We launch a new series of 9BB solar panels for you. If you are interested in these, please visit the related product pages for more information.
By the way, if you meet any problems, please feel free to ask BougeRV, we have the special 1-on-1 service for you now.