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Light converging device, design method thereof and light-converging photovoltaic power generation device

A concentrating device and design method technology, applied in photovoltaic power generation, light radiation generators, concentrating mirrors, etc., can solve the problems of low photoelectric conversion efficiency and limited application range of concentrating photovoltaic power generation devices, and achieve improved photoelectric conversion efficiency and illuminance Uniform, improved mechanical stability effect

Inactive Publication Date: 2011-05-18
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of low photoelectric conversion efficiency and relatively limited application range of existing concentrating photovoltaic power generation devices, the present invention provides a concentrating photovoltaic power generation device with high photoelectric conversion efficiency and wide application range

Method used

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  • Light converging device, design method thereof and light-converging photovoltaic power generation device

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Embodiment 1

[0036] A concentrating photovoltaic power generation device includes a concentrating device, a photovoltaic cell, a heat dissipation device, a packaging device and a tracking device. The concentrating device, the photovoltaic cell and the heat dissipation device are sequentially arranged from top to bottom. The concentrating device is used to condense the sun's rays onto the photovoltaic cell. The photovoltaic cell is used to receive the light emitted by the concentrating device and convert the light energy into electrical energy. The encapsulation device is used for encapsulating the concentrating device, the photovoltaic cell and the heat dissipation device together. The packaging device is fixedly installed on the tracking device, and the tracking device adjusts the position and angle of the packaging device according to the position of the sun at different times.

[0037] Such as figure 1 As shown, the condensing device includes a focusing lens 10 and a secondary lens 2...

Embodiment 2

[0044] The concentrated photovoltaic power generation device described in the present invention is substantially the same as the concentrated photovoltaic power generation device in Embodiment 1, the main difference is that the secondary lens includes a first optical surface, a second optical surface, a bottom surface and an outer surface. On the side, the first optical surface is located on the top of the secondary lens, the outer surface is in contact with the first optical surface, the bottom surface is in contact with the outer surface, and the second optical surface is located in the middle of the bottom surface.

Embodiment 3

[0046] The concentrating photovoltaic power generation device described in the present invention is substantially the same as the concentrating photovoltaic power generation device in Embodiment 1, the main difference is that the secondary lens further includes a first optical surface, a second optical surface, a bottom surface, a Outer surface, a total reflection surface and an inner surface, the first optical surface is located at the top of the secondary lens, the second optical surface is located in the middle of the bottom of the secondary lens, the outer surface is opposite to the first optical surface Next, the bottom surface is in contact with the outer surface, the bottom surface is a circular surface, the inner surface is in contact with the total reflection surface and the bottom surface, the second optical surface and the total reflection surface form an inverted cone structure, the total reflection surface The reflective surface is the side of the inverted cone.

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Abstract

The invention relates to a light converging device, a design method thereof and a light-converging photovoltaic power generation device. The light-converging photovoltaic power generation device comprises a light converging device and a photovoltaic cell, wherein the light converging device comprises a focusing lens used for converging external light lays, and the photovoltaic cell is used for receiving the light rays and converting optical energy into electrical energy, the light converging device further comprises a secondary lens, and the focusing lens and the secondary lens are arranged in sequence from top to bottom. The secondary lens comprises a first optical surface located on the top of the secondary lens and a second optical surface located in the middle position of the bottom of the secondary lens, the first optical surface is arranged on the focal plane of the focusing lens and converges light rays emitted by the focusing lens to the second optical surface, and the light rays are transmitted to the photovoltaic cell through the second optical surface. By applying the invention, the energy loss of light rays reaching the surface of the photovoltaic cell is reduced, the illumination intensity of light rays irradiated on the surface of the photovoltaic cell is uniform, and the application range is wide.

Description

【Technical field】 [0001] The invention relates to a light concentrating device, a design method thereof, and a concentrating photovoltaic power generation device using the light concentrating device. 【Background technique】 [0002] As the most abundant renewable energy on earth, light energy has been increasingly valued by various countries in the world. However, so far, solar photovoltaic technology has not been widely used as expected. The reason is mainly because the cost of photovoltaic system is too high. [0003] One of the effective ways to reduce the cost of photovoltaic systems is to add relatively low-cost concentrating devices to photovoltaic power generation devices to form concentrated photovoltaic power generation devices. The prior art concentrating photovoltaic power generation device includes a concentrating lens, a homogenizing prism and a photovoltaic cell, and the concentrating lens, the homogenizing prism and the photovoltaic cell are sequentially arra...

Claims

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Application Information

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IPC IPC(8): G02B19/00G02B7/04G02B3/08G02B3/00G02B27/00H02N6/00H02S40/22
CPCY02E10/52
Inventor 刘华卢振武荆雷赵会富
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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