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Component packaging method for warped flexible solar cells for stratospheric aircraft

A flexible solar cell and packaging method technology, applied in electrical components, semiconductor devices, circuits, etc., can solve the problems of short circuit of components, easy residual air bubbles on the back of the support substrate and the battery, unfavorable for the application of stratospheric aircraft, etc., to improve the working characteristics. Effect

Active Publication Date: 2020-04-14
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Component packaging method for warped flexible solar cells for stratospheric aircraft
  • Component packaging method for warped flexible solar cells for stratospheric aircraft
  • Component packaging method for warped flexible solar cells for stratospheric aircraft

Examples

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Embodiment 1

[0026] figure 1 It is a schematic diagram of the encapsulation structure of a typical flexible thin-film solar cell module for stratospheric aircraft. From top to bottom, there are upper surface encapsulation film 1, transparent hot-melt adhesive film 2, flexible thin-film solar cell 3, white hot-melt adhesive film 4 and The lower surface encapsulation film 5 .

[0027] In this example, the upper surface packaging film 1 adopts ethylene-tetrafluoroethylene copolymer (abbreviated as ETFE) film, which has good weather resistance and optical transmittance. In this example, the thickness is 25 μm and the average optical transmittance is 92%. The ETFE film is made of high-quality ETFE film, and at the same time, corona treatment is performed on the side that is bonded to the polyolefin film, so that it has high surface activity and improves the adhesion to the polyolefin film.

[0028] In this example, the transparent hot-melt adhesive film 2 is a transparent polyolefin (POE) film...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/048
CPCH01L31/048H01L31/1896Y02E10/50Y02P70/50
Inventor 焦小雨宋琳琳杨君坤王小顺杨洋
Owner SHANGHAI INST OF SPACE POWER SOURCES
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