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What is the service life of space solar cells?
When it comes to space solar cells, those who are familiar with this area or professionals in this field should not be unfamiliar with it. However, today we will not talk about anything else, but mainly take a look at the lifespan of solar cells applied in space. The service life of space solar cells is affected by various factors, and the battery life varies depending on different types and application scenarios. The following are some common service life situations of space solar cells:
International Space Station Solar Cells:
Early solar cells on the International Space Station were designed with a durability of 15 years in mind, but many have actually been in service for over 20 years. Due to improved efficiency, new solar cells will be installed starting in 2021 to enhance power generation capacity. The plan is to operate the International Space Station until around 2030. However, as the usage time increases, various equipment aging issues, including solar cells, are gradually becoming apparent.
Mars rover solar cells:
The solar cells used in Mars exploration are greatly affected by the lighting conditions, temperature, dust storms, and other factors on Mars. For example, the design lifespan of the Opportunity rover is only 90 days, but it has been working for 14 years relying on solar cells. However, over time and environmental impact, the efficiency of the solar panels will gradually decrease.
Generally speaking, the design lifespan of space solar cells is usually around 15 to 30 years. But the actual service life will be affected by space environmental factors, such as strong radiation, atomic oxygen erosion, extreme high and low temperature cycles, micrometeoroid impacts, etc. It is also related to the materials and manufacturing processes of the battery, as well as the orbit and mission requirements of the spacecraft.
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