156*156mm Poly Cell Poly Panel China High Quality Module Price from China Factory

product description

Multiple solar cells in an integrated group, all oriented in one plane, constitute a solar photovoltaic panel or solar photovoltaic module. Photovoltaic modules often have a sheet of glass on the sun-facing side, allowing light to pass while protecting the semiconductor wafers. Solar cells are usually connected in series in modules, creating an additive voltage. Connecting cells in parallel yields a higher current; however, problems such as shadow effects can shut down the weaker (less illuminated) parallel string (a number of series connected cells) causing substantial power loss and possible damage because of the reverse bias applied to the shadowed cells by their illuminated partners. Strings of series cells are usually handled independently and not connected in parallel, though (as of 2014) individual power boxes are often supplied for each module, and are connected in parallel. Although modules can be interconnected to create an array with the desired peak DC voltage and loading current capacity, using independent MPPTs (maximum power point trackers) is preferable. Otherwise, shunt diodes can reduce shadowing power loss in arrays with series/parallel connected cells. 

product characteristic

1. High efficiency and High power.
2. Long-term electrical stability.
3. Lowest price and Fastest delivery.
4. Good quality and good service.

5.Bulk supply

6. Good Warranty

7.Big Sale

detail parameter

technological process

package&delivery

we pack goods with pallets and carton box

each one will be carefully examined by our staff.