A substrate structure suitable for flexible solar wings and its forming method

Abstract

The invention discloses a substrate structure suitable for a flexible solar wing and a molding method thereof, which has certain flexibility, thin thickness (0.3 mm), large size, good mechanical properties and space environment resistance. The flexible substrate adopts a novel design idea that combines the characteristics of flexible boards and rigid boards. It is a five-layer planar symmetrical structure. The middle layer is a fiber-reinforced composite material, and the outermost layer is polyimide film. The polyimide film and the middle layer The reinforcement layer is pasted and cured with a flexible adhesive. Flexible substrates suitable for low-orbit environments. In order to protect low-orbit atomic oxygen, there is an atomic oxygen protective layer on the outer surface of the polyimide film. In order to ensure that there is no delamination, no bubbles, and a smooth surface between the layers of the flexible substrate after molding, a molding process combining soft and hard boards is innovatively proposed for molding.

Description

technical field [0001] The invention relates to a flexible solar cell wing substrate structure, which can be used as a mounting platform and a support carrier for a large-area flexible solar wing cell circuit. Background technique [0002] At present, domestic spacecraft solar wings generally use rigid solar wings and semi-rigid solar wings, and the corresponding substrates (battery circuit installation platform and support carrier) are rigid substrates and semi-rigid substrates, which are heavy in weight (area density is generally 1.0kg / m 2 ~2.5kg / m 2 ), the size is larger after being folded (generally the thickness of a single board is 23mm). With the development of aerospace technology, the power demand of large-scale spacecraft is increasing, so the area of ​​the solar cell wing is required to be larger and larger. If the traditional rigid substrate or semi-rigid substrate is still used on the large-area solar cell wing, the It will face the problem that the envelope...

AI Technical Summary

Problems solved by technology

With the development of aerospace technology, the power demand of large spacecraft is increasing, which requires the area of ​​solar cell wings to be larger and larger. If traditional rigid substrates or semi-rigid substrates are still used on large-area solar cell wings, it will It will face the problem that the envelope size and weight cannot meet the requirements after being folded, so it is urgent to develop flexible solar wing technology with small size and light weight

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