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| Long-life Application of Printed Circuit Board Solar Arrays on Orbit |
| Received:October 05, 2024 Revised:November 05, 2024 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2025.02.014 |
| KeyWord:printed circuit board solar arrays microsatellites long-life thermal cycling electrical properties |
| Author | Institution |
| ZHANG Fan |
Shanghai Fuxi-Energy Technology Co., Ltd., Shanghai , China |
| JIAO Jian |
Shanghai Fuxi-Energy Technology Co., Ltd., Shanghai , China |
| HE Jianing |
Shanghai Fuxi-Energy Technology Co., Ltd., Shanghai , China |
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| Abstract: |
| In order to meet the long-life and stable operation requirements of printed circuit board solar arrays on orbit, the work aims to carry out life test verification to the printed circuit board solar arrays and study the effect of harsh temperature environment on the electrical performance of solar arrays. The high and low temperature impact test was carried out on the sample by the two-box method in the temperature range of ‒90-100 ℃, and the number of thermal cycling was not less than 3000 times. After every 500 times of thermalcycling, the voltage and current properties of the sample were tested,and the effect of thermalcycling on the solar arrays was analyzed. After the thermal cycling test at each stage, the sample was inspected by EL and other means, and the appearance of the printed circuit board and solar cells were normal. There were no abnormal phenomena such as deformation and hidden cracking. The electrical performance test of the sample was carried out by the solar simulator, the temperature impact environment hadfew effect on the voltage of the solar cells, but had a great impact on the current, which caused the current to drop by 2%-3%. The printed circuit board solar arrays adopt the design method of two-layer printed structural board, small-size solar cells and Kovar interconnection, which can meet the long-life operation requirements of microsatellites on orbit. At last, a certain output current margin design should be considered to improve the reliability of the solar arrays at the end of its life. |
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