4) EVA as above, mainly bond and encapsulate the power generation body and backplane
5) backplane function, sealing, insulation, waterproof (generally used TPT, TPE and other materials must be aging resistant, most component manufacturers have 25 years of warranty, toughened glass, aluminum alloy generally no problem, the key is in the backplane and silica gel can meet the requirements).
6) The junction box protects the whole power generation system and acts as a current transfer station. If the component is short circuited, the junction box will automatically disconnect the short circuit battery string to prevent the whole system from burning out. The most critical thing in the junction box is the selection of diodes. According to the different types of batteries in the components, the corresponding diodes are not the same.
7) The silicone sealing function is used to seal the components and aluminum alloy frame, and the junction between the components and the junction box. Some companies use double-sided tape, foam to replace silica gel, silica gel is widely used in China, the process is simple, convenient, easy to operate, and the cost is very low.
