Power supply system based on solar thermoelectric generation

Abstract

The invention discloses a power supply system based on solar thermoelectric generation, which comprises a detection control module, an off-peak charging circuit and a thermoelectric generation circuit. Electric energy generated by the thermoelectric generation device is stored in a battery pack, and a mains supply network through rectification and step-down back processing is accessed to the battery pack; electric energy stored in the battery pack is converter through a DC-DC converter and is then accessed to a load of a user for being used; the detection control module is connected with the battery pack and each solid state relay at the same time, and the detection control module performs selection on a power supply circuit through controlling the state of the solid state relay according to a working time period. The solar thermoelectric generation device belongs to a solid state energy conversion process, a trough-type parabolic concentration and heat collection technology and a thermoelectric generation technology are combined, clean and pollution-free solar energy is used as a heat source, natural cold resources in winter are adopted for temperature reduction, the device can achieve the purposes of concentration and heat collection, the energy flux density in the center position of a collector plate is the highest and uniformity is realized.

Description

technical field [0001] The invention relates to the field of solar power generation, in particular to a power supply system based on solar temperature difference power generation. Background technique [0002] With the increasing energy shortage and environmental pollution problems, there are difficulties in living in remote areas, and the development and utilization of renewable energy has become the main means to solve energy and environmental problems. In the field of solar power generation, the current relatively mature technology is solar photovoltaic power generation, which uses photons with shorter wavelengths in the solar spectrum to make semiconductor materials produce photovoltaic effects and directly convert light energy into electrical energy. However, this power generation method converts most of the solar energy into heat energy. Every time the operating temperature rises by 1°C, the photoelectric conversion efficiency decreases by 3% to 5%. Another form of con...

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Problems solved by technology

[0005] The temperature difference between the two ends of the flat heat pipe in the existing solar thermoelectric power generation device is small, and the condensation section of the flat heat pipe is cooled by the water system. The settin...

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