Solar panels consist of “crystalline silicon cells”, which are then formed through an encapsulation process. Therefore, the type and quality of the “invisible battery” is one of the important factors that determine the power generation efficiency of solar panels. Batteries are classified into monocrystalline silicon and polycrystalline silicon by type. As the technology matures, monocrystalline silicon has gradually become mainstream due to its price and efficiency advantages.
Because the battery cells that make up the battery plate are graded, so is the battery plate, and the battery sheet includes three grades of A, B, and C.
A-grade batteries are basically free of any flaws and may be slightly scratched;
Class B battery chips may have defects such as leaked solder paste, grid cracks, phantom prints and other defects;
C-class battery chips are mainly recycled battery chips, which may cause virtual printing, edge collapse, etc.
The price and power generation effect of different quality grades are different. The service life will vary, but as qualified products, the B- and C-class battery chips are inexpensive and will be used by some businesses. This also explains the huge difference in market price for the same 100-watt solar panel.
The silicon material used in solar cells is very fragile and easily damaged, so the packaging process also affects the integrity of the cell.
After the solar panel completes the encapsulation process, it needs to be fully inspected by EL test equipment. Cracked, black plexiform panels are Class B or Class C solar panels according to EL testing, these black shades are shattered cracks and broken grids.
Invisible to the naked eye, many customers will feel no difference between these solar panels, but in actual use, the two will be very different in terms of power generation efficiency and lifespan. Fragments and fragments will not only affect the efficiency and use of power generation, but also cause safety hazards due to short-circuiting of local battery currents.
Summary: There are several reasons that affect battery prices
The encapsulation material of solar cells, the lighter the material, the smaller the weight of the body, the less damage to the car, and the higher the price;
The encapsulation materials of solar panels (surface material, aluminum frame, back panel, etc.) have good corrosion resistance, and at the same time, the better the heat dissipation, force and power generation of solar panels, the higher the price;
The choice of solar monocrystalline silicon wafers, the higher the quality level of monocrystalline silicon, the higher the power generation power of solar panels, and the higher the price.
Post time: Feb-23-2022