There are nine main core components of solar modules. And it includes cells, interconnection ribbon, busbar ribbon, tempered glass, EVA, back sheet, Aluminum alloy frame, silicone, and junction box.


1. Cell
Devices that convert photoelectric effect into electricity.
Polysilicon Production
Globally, the polysilicon industry is now continuing to shift to domestic, and the epidemic has accelerated this process. 2020, global polysilicon production capacity of 608,000 tons, down 9.9% year-on-year; production of 521,000 tons, an increase of 2.6% year-on-year. During the same period, China’s polysilicon production capacity of 457,000 tons, down 1.9% year-on-year, and production of about 396,000 tons, an increase of 15.8%. Domestic polysilicon production capacity and output growth are significantly ahead of the global, accounting for 75% and 76%, respectively.
2. Interconnector Ribbon: Series connection of battery cells
Interconnector ribbons are an important raw material in the welding process of solar modules. And usually, we’ll coat a thermal coating on the outer surface.

3. Busbar Ribbon: The carrier that connects the battery string
As far as the structural composition of the busbar ribbon is concerned, copper, aluminum, or copper-aluminum-plated materials with high electrical conductivity are usually used to prepare the sink bar. However, copper or aluminum materials are less resistant to corrosion. Therefore, copper, aluminum, or copper-aluminum sink strips are easily corroded in use, thus reducing the performance of the sink strips and shortening their service life. Meanwhile, tin (or tin alloy) with relatively superior wear and corrosion resistance can be used for a longer period of time in a natural or corrosive atmosphere. However, because of the low electrical conductivity of tin (or tin alloy). It cannot be used alone to prepare photovoltaic sink strips.
Raytron’s New Copper Clad Aluminum Busbar Ribbon
In order to compensate for these shortcomings, a copper sink bar coated with tin was developed by combining copper, which has a relatively high electrolytic rate, with tin, which has relatively good corrosion resistance. This type of PV busbar not only has good electrical conductivity but also has corrosion resistance. This means the use environment can not corrode easily. However, although copper has good electrical conductivity. But the thermal conductivity is not good, and compared to the high price of aluminum, the mass is larger, thus increasing the product and transportation costs. In response to the defects in the prior art, Raytron provides a composite busbar ribbon with good electrical and thermal conductivity, low price, and lightweighA New Composite Busbar Ribbon
https://pvribbon.com.cn/wp-content/uploads/2022/11/RAYTRON-PV-Ribbon-production-line-1.mp4#t=5Conductivity
CCA busbar offers superior electrical and thermal conductivity offers.50% Cost reduction
As the density of CCA is 2.23 times less than copper, almost 50% overall cost could be saved.