Power density adjustable film reflecting and condensing space solar energy collecting station

Abstract

The invention discloses a power density adjustable film reflecting and condensing space solar energy collecting station, which comprises a spacecraft platform, an optical system and a light path adjusting mechanism, wherein the optical system comprises a main condenser, an auxiliary condenser and a plane mirror; the main condenser and the auxiliary condenser are arranged in opposite directions, optical axes of the main condenser and the auxiliary condenser are overlapped, and a normal distance between the main condenser and the auxiliary condenser is adjusted through the light path adjusting mechanism to change the power density of output light beams; the angle of the plane mirror is adjusted through the light path adjusting mechanism to change the direction of the output light beams; sunlight is condensed and reflected to the auxiliary condenser through the main condenser, the reflected light rays are condensed and reflected to the plane mirror through the auxiliary condenser, and the light beams are reflected to a target through the plane mirror.

Description

technical field [0001] The invention belongs to the field of space solar energy, and in particular relates to a space solar energy concentrating station based on a large-diameter film focusing mirror structure, which can realize continuous adjustment of the power density of emitted light beams. Background technique [0002] Since the 1990s, with the world's energy supply and demand contradictions and environmental protection issues becoming increasingly prominent, energy shortages have become the bottleneck of economic development in countries around the world. For this reason, for decades, scientists from the United States, Japan, Europe, Russia and other countries, as well as China, have been focusing on the research of green renewable energy that can be developed by human beings on a large scale, and finally focused their hopes on space solar energy. The utilization of ground solar energy faces the following two problems: 1) The solar energy reaching the earth's surface i...

AI Technical Summary

Problems solved by technology

Not conducive to large-scale industrial development

2) The intensity of solar radiation reaching the earth's surface is small

Coupled with the existence of multiple energy conversions, it is difficult for the conversion efficiency of solar energy to achieve the purpose of industrial production of electricity, so the efficiency of converting space solar energy into the available electrical energy on the ground is not very ideal

Second, construction costs and launch costs

The current market price of 1 kilowatt photovoltaic panels is 7,000-10,000 yuan, while the cost of reflecting mirrors that reflect 1 kilowatt of solar energy in space is less than 100 yuan, a difference of tens or hundreds of times, and the quality is several times smaller. Such a huge space solar power station The volume and mass of the structure are basically in the 10,000-ton level, and the launch cost is relatively high, so the economic benefits brought are not obvious

The intricate cables used for power transmission on the star make the on-orbit assembly more cumbersome, and it takes a long time for the entire launch to commercial operation, which requires high reliability and stability of the entire spacecraft

From the perspective of long-term management and maintenance, the fewer technical links, the fewer possible failure points, and such a complex and huge spacecraft structure will inevitably bring troubles to construction and maintenance

[0007] The invention patent "Spin-stabilized thin-film mirror and its application in space" (Patent No. CN1341536A) discloses a spin-stabilized thin-film mirror in space. The energy collection and conversion device of the power station forms a moored solar power station, but it is limited to meet the power requirements of the spacecraft, and does not provide specific methods and equipment solutions for transmitting energy to the ground

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