Solar panel (Solar panel) is through the absorption of sunlight, the solar radiation through the photoelectric effect or photochemical effect directly or indirectly converted into electrical energy device, most of the main material of small solar panels for "silicon", but because of the production cost is large, so that it is generally used there are certain limitations.

Compared with ordinary batteries and recyclable rechargeable batteries, solar cells are more energy-saving and environmentally friendly green products.

Structural composition

1) The role of tempered glass is to protect the main body of power generation (such as battery), and the selection of light transmission is required, 1. Light transmittance must be high (generally more than 91%); 2. Super white tempering treatment

2) EVA is used to bond and fix the tempered glass and power generation body (such as battery), the quality of transparent EVA material directly affects the life of the component, EVA exposed to the air is easy to age yellow, thus affecting the light transmission of the component, thus affecting the power generation quality of the component in addition to the quality of EVA itself, the lamination process of the component manufacturer is also very large. If EVA adhesive connection is not up to standard, EVA and tempered glass, backplane bonding strength is not enough, will cause early aging of EVA, affecting the life of the component.

3) The main role of the battery is to generate electricity, the mainstream of the main power generation market is crystal silicon solar cells, thin film solar cells, both have advantages and disadvantages. Crystalline silicon solar cells, the equipment cost is relatively low, but the consumption and battery costs are high, but the photoelectric conversion efficiency is also high, and it is more suitable to generate electricity in outdoor sunlight; Thin film solar cells, the relative equipment cost is high, but the consumption and battery cost is very low, but the photoelectric conversion efficiency is more than half of the crystalline silicon cell, but the weak light effect is very good, and it can also generate electricity under ordinary light, such as the solar cell on the calculator.

4) EVA functions as above, mainly bonded to encapsulate the power generation body and the backplane

5) The backplane function, sealing, insulation, waterproof (generally used TPT, TPE and other materials must be resistant to aging, most component manufacturers are guaranteed for 25 years, tempered glass, aluminum alloy is generally no problem, the key is whether the backplane and silicone can meet the requirements.)

6) Aluminum alloy protective laminate, plays a certain sealing, supporting role

7) The junction box protects the entire power generation system and acts as a current transfer station. If the component is short-circuited, the junction box will automatically disconnect the short-circuited battery string to prevent burning out the entire system. The key in the junction box is the selection of diodes, and the corresponding diodes are not the same according to the type of battery in the component

8) Silicone sealing effect, used to seal components and aluminum alloy frame, components and junction box junction. Some companies use double-sided tape, foam to replace silica gel, silica gel is commonly used in China, the process is simple, convenient, easy to operate, and the cost is very low.