A solar photovoltaic receiver for a dish-type high-magnification concentrating system

Abstract

The invention provides a solar photovoltaic receiver used for a disk type high-power concentration system. The solar photovoltaic receiver comprises a transparent plate, an insulation optical fluid, a concentration solar cell assembly and a metal substrate, wherein the transparent plate comprises a disk type paraboloid portion, the outer surface of the disk type paraboloid portion of the transparent plate is provide with a coating, the transparent plate is fixedly connected with the metal substrate through side walls to form a flow channel, the flow channel is filled with the insulation optical fluid, the side walls are provided with a fluid inlet and a fluid outlet, the metal substrate comprises a disk type paraboloid portion and a plane portion, the concentration cell assembly is arranged at the disk type paraboloid portion of the metal substrate, and the concentration cell assembly is immersed in the insulation optical fluid. The solar photovoltaic receiver improves concentration ratio and optical efficiency of the disk type high-power concentration system, solves the heat dissipation difficulty of the system, designs the portion of the metal substrate for fixedly installing the cell assembly into a disk type paraboloidal shape, and improves the evenness of light intensity distribution at focal spots, thereby increasing power generation efficiency of the system, and reducing cost of photovoltaic power generation.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation, and in particular relates to a solar photovoltaic receiver used in a dish-type high-power concentrating system. Background technique [0002] Solar photovoltaic power generation is the fastest growing and most dynamic research field among the many utilization methods of solar energy in recent years. However, due to the lack of competitive installation costs and feed-in tariffs, the photovoltaic industry has not achieved rapid development. Technically solving the cost of photovoltaic power generation has become a fundamental problem restricting the development of photovoltaics. Among them, the use of concentrating photovoltaic technology to improve photoelectric conversion efficiency and reduce the cost of photovoltaic power generation has high hopes. Especially in recent years, with the continuous improvement of the efficiency of III-V multi-junction solar cells, the...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a solar photovoltaic receiver for a dish-type high-power concentrating system, and solve the problem of heat dissipation and the light intensity distribution at the focal spot of the dish-type high-power concentrating photovoltaic system The problem of system power generation efficiency decline caused by unevenness can improve the power generation efficiency of the entire system and reduce the cost of photovoltaic power generation

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