A kind of interconnection manufacturing method of solar cell and solar cell component manufactured therewith

Abstract

The invention discloses a solar battery interconnection manufacturing method and a solar battery assembly manufactured therewith. The manufacturing process of the existing silicon solar modules is complicated, the packaging cost is high, the operation is complicated, and the reliability is poor. The interconnection manufacturing method described in the present invention is to make the film material and carry out the conductive composite treatment, and the conductive composite film formed through the conductive composite treatment is laminated and interconnected with the diaphragm to be used to form a solar cell assembly; the solar cell assembly in the present invention includes The front film layer, the first adhesive film layer, the battery layer and the conductive composite film are integrally formed. The interconnection manufacturing method in the present invention is easy to operate, the overall structure of the manufactured solar battery module is simple and reasonable, and the packaging is stable and reliable.

Description

Technical field: [0001] The invention specifically relates to a solar cell interconnection manufacturing method and a solar cell module manufactured therefor. Background technique: [0002] Photovoltaic solar energy is an important and one of the fastest growing renewable energy sources. In the past ten years, the conversion efficiency of crystalline silicon solar cells represented by PERC and black silicon technology has increased to more than 20%, and further improvement is very difficult. During this period, the cost of battery cells has also been greatly reduced, but this is mainly due to economies of scale. [0003] At present, in the cost structure of components, the cost of component packaging has exceeded the cost of cells. Further reducing the cost of module packaging has become the key to the levelized cost of photovoltaic solar power generation reaching or lower than grid parity in most areas of my country. [0004] In the past two decades, except for the impro...

AI Technical Summary

Problems solved by technology

[0006] 1. The welding temperature is high. Due to the large difference in expansion coefficient between copper and silicon, the mechanical shock, thermal shock and residual stress caused by the welding process will cause micro-cracks on the cells on both sides of the main grid line and the breakage of the thin grid line. The output power and reliability of the components will be reduced;

[0007] 2. The large shading area of ​​the grid lines and welding strips leads to a decrease in output power;

[0008] 3. The battery operating temperature is high, resulting in a drop in output power;

[0009] 4. There are many processes and complex processes, which reduce the reliability of the system operation;

[0010] 5. Low production efficiency and high cost

[0013] 1. The thin metal wire and the battery sheet are not well bonded during welding, resulting in the failure of some fine metal wires to form a good combination with the electrodes, that is, a good ohmic contact cannot be formed;

[0014] 2. It is difficult to accurately align the thin metal wire with the cell electrode

[0016] The main problems of the above solutions are: higher requirements for equipment, and the complexity of the mechanism and process reduces the efficiency and reliability of the process

However, two problems have also arisen from this: difficult selection of membrane materials, and increased process complexity and cost

The above problems have not yet been effectively resolved

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