Your problem is too big. The classification of battery cells can be divided into two types: 125 and 156 according to their size, or they can also be divided into monocrystalline and polycrystalline. It can also be divided based on conversion rate. It can also be divided according to its appearance. It can also be divided into single printing and overprinting.
As for the advantages: energy saving, high efficiency and environmental protection. The disadvantage is: the high cost.
The main sub-standards of Regulations A and B for solar cells are based on various parameters such as appearance and mechanical properties:
Appearance points: A allows only the same thing; Color B can have two similar colors (blue or dark blue, light blue)
Leak, A, B ≤3㎡
Dirty, A ≤3㎡ B ≤9㎡< /p>
Nodes; watermarks; Main Grid Line Defects, Printedmultiple ons; back electrode defects, multiple impressions; missing corners of the electric field; ; etc. Grade A is a high quality product, Grade B is a qualified product.
In addition, Grade A is a high efficiency film ≥15.75% single crystal
≥ 15.5% polycrystalline
Taking 15.75 as an example, the price of monocrystalline A gauge should be between 30 and 50/W