Production process of bendable single crystalline silicon solar cell

Abstract

The invention discloses a production process of bendable monocrystalline silicon solar cells. Firstly, the cell silicon slices are welded into battery components, and then the battery components are fixed on the glass fiber felt, and the first adhesive film stacked sequentially from top to bottom , the front support film, the second adhesive film, the battery assembly, the glass fiber felt, the third adhesive film and the back plate constitute the base material of the battery assembly, which is first placed in a low-temperature lamination device, heated and pressurized in a vacuum state to make the above-mentioned components The adhesive film is initially melted and the initial bonding is completed. On the one hand, the materials of each layer are not easy to shift during the subsequent operation process. On the other hand, the first adhesive film has been melted and is sticky, which is convenient for the ETFE film to be flattened on the first on the adhesive film, and then put it into high-temperature lamination equipment, so that the materials of each layer are cross-linked and highly bonded to each other to achieve the set cross-linking degree and peel strength. Cracking, stable and reliable quality, the products produced have good sealing performance, good flexibility and weather resistance.

Description

technical field [0001] The invention relates to the field of solar power supply, in particular to a production process of a bendable single crystal silicon solar cell. Background technique [0002] Traditional solar cells are mostly packaged with glass and resin materials, and the outer frame is made of rigid materials such as metal, wood, and hard plastic. They are bulky, fragile, and inconvenient to carry. In order to adapt to various outdoor usage scenarios, a solar cell with a bendable solar panel is required to fit, for example, the curved surface of a garden light, the curved surface of a roof, and the like. [0003] ETFE film is a polymer material with high temperature resistance, excellent wear resistance, and good light transmission performance. It has good chemical stability and corrosion resistance. The ultimate tensile strength of ETFE film is above 40MPa, below At 20MPa, the membrane material is in an elastic state, allowing folding, and has good tear resistanc...

AI Technical Summary

Problems solved by technology

[0004] There have been examples in the industry of applying ETFE film materials to solar cells, but there are obvious defects in the lamination process, and the finished solar cells after packaging are easy to crack, and the repair rate is high

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