Wuxi Flyt New Energy Technology Co.,Ltd.

Composition of monocrystalline silicon solar cells

1. The role of tempered glass is to protect the main body of power generation (such as battery), the selection of light transmission is required, first, the light transmission rate must be high (generally more than 91%); Second, 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 manufacturers 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, the cost of consumption and cells is high, and the photoelectric conversion efficiency is also high; It is more suitable to generate electricity in outdoor sunlight thin film solar cells, the equipment cost is relatively high, the consumption and battery cost is very low, 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 is sealed, insulated and waterproof (generally TPT, TPE and other materials must be resistant to aging, component manufacturers are guaranteed for 25 years, tempered glass, aluminum alloy are generally no problem, the key is whether the backplane and silicone can meet the requirements.)

Attached: Power generation body (crystalline silicon cell)

We know that the power generation efficiency of a single battery is very low, such as the power of a 156 battery is only 3W, which is far from meeting our needs, so we connect many batteries in series, which has reached the power, current and voltage we require, and the batteries that are connected in series are called battery strings.

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

7. The junction box protects the entire power generation system, plays the role of the current transfer station, if the component short-circuit junction box automatically breaks the short-circuit battery string, prevent burning the entire system junction box is the most critical choice of diode, according to the type of battery in the component, the corresponding diode is not the same.

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 silicone, the domestic common use of silicone, simple process, convenient, easy to operate, and the cost is very low.

Post time: Sep-13-2023