Component packaging method for warped flexible solar cells for stratospheric aircraft

Abstract

The invention belongs to the technical field of aerospace vehicle energy systems, and particularly relates to an assembly packaging method for a warped flexible solar cell piece for a stratospheric aircraft. A warped flexible thin-film solar cell is flatly pasted on a thermal stripping film according to the design of a cloth piece, series-parallel connection welding between single cell pieces is carried out, the surface of the cell is sequentially covered with a transparent hot melt adhesive film and an upper surface packaging film after welding is completed, and the cell enters a laminating machine to be laminated; and after the lamination is finished, a semi-packaged cell assembly is taken out, the thermal stripping film is removed, the front surface of the assembly is put downwards, thebottom surface of the cell is sequentially covered with a hot melt adhesive film and a lower surface packaging film, the cell enters the laminating machine for lamination, and the cell assembly is taken out after the lamination is finished to complete packaging of the flexible thin-film solar cell assembly. In the whole process of preparing the flexible thin-film solar cell assembly, various problems caused by warping of a solar cell are thoroughly eliminated.

Description

technical field [0001] The invention belongs to the technical field of aerospace vehicle energy systems, and in particular relates to a component packaging method for warped flexible solar cells suitable for stratospheric aircraft. Background technique [0002] At present, the replacement of low-orbit satellites by long-endurance stratospheric vehicles has become a research hotspot at home and abroad. As the main energy source of the stratospheric aircraft, the solar cell module is the key to determine the uninterrupted working time of the aircraft. Solar cells currently used in stratospheric aircraft are mainly flexible thin-film solar cells and semi-rigid solar cells. Flexible thin-film solar cells include thin-film gallium arsenide, amorphous silicon and copper indium gallium selenide, and semi-rigid solar cells are mainly thin crystalline silicon solar cells. . Compared with semi-rigid solar cells, flexible thin-film solar cells have the advantages of light weight, thi...

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Problems solved by technology

However, the first method cannot completely eliminate the warping problem of the battery, and different battery batches require different metal plating thicknesses, which is difficult to implement; the second method will increase the weight and thickness of the thin-film solar cell module, and the support substrate and the back of the battery are easily separated. Residual air bubbles are not conducive to the application of stratospheric aircraft; Method 3 During the lamination stage, the adsorption platform cannot enter the laminator, and the battery strings are twisted after withdrawing from the adsorption platform, which is prone to displacement and overlapping of the cells during lamination, resulting in short circuit of the components

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