The Solar panel module curing line uses very little power for each individual solar cell, so the modules are internally connected in the form of a battery string. The upper (negative) of each panel is soldered to the back (positive) of the next cell. Although it can be handled manually, it is usually processed by automated processing of the string.
The end of each string of the solar panel module curing line extends beyond the edge of the last cell to supply gas. After the connection, the fragile solar cell needs to be properly protected to withstand external mechanical stresses, changes in climatic conditions and humidity. Therefore, people first embed a transparent bonding material at the joint end and also insulate it. The battery string is then sandwiched between the front and back two sheets. The front is a light-sensitive surface, the material must be transparent, generally using ultra-white suede glass, such as high transmittance solar glass.
The packaging process of the solar panel module curing line provides optical connection and protection between the glass and the solar cell. The material selected should be able to adhere to the thin layers on the top and back, and its composition will not damage the PV cells over time and will not change the composition due to UV and humidity. Because any translucency occurs, the performance of the module is greatly reduced. The paste must be secure and free of delamination. The packaging material for crystalline silicon cells is mainly EVA.