Dense array concentrating solar energy photovoltaic device

A technology for concentrating solar energy and photovoltaic devices, which is applied in the field of dense array concentrating solar photovoltaic devices, can solve the problems of difficult heat dissipation of solar cells, electrodes must be arranged, and photovoltaic cell chips with long concentrating focal lengths, etc. The effect of small focusing spot and small focusing focal length

Active Publication Date: 2014-09-17
REDSOLAR NEW ENERGY TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a dense array concentrating solar photovoltaic device, which is used to solve the problems of difficult heat dissipation of solar cells, long focal length of concentrating light and internal arrangement of photovoltaic cell chips in the existing large-diameter Fresnel concentrating photovoltaic power generation technology. Electrodes and other issues

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  • Dense array concentrating solar energy photovoltaic device
  • Dense array concentrating solar energy photovoltaic device
  • Dense array concentrating solar energy photovoltaic device

Examples

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Embodiment 1

[0044] figure 1 It is a schematic structural diagram of a dense array concentrated solar photovoltaic device provided by Embodiment 1 of the present invention. The device includes: a Fresnel lens array 1 , a planar substrate 2 and at least two photovoltaic cells 3 .

[0045]The Fresnel lens array 1 is on the top layer, which is a whole lens, the upper surface is a plane, and the lower surface has at least two groups of identical serrations in the shape of concentric rings, and each group of identical concentric rings forms a Fresnel lens, all Fresnel lenses form an array. The planar substrate 2 is disposed on the bottom layer. The photocells 3 are arranged on the upper surface of the planar substrate 2 and arranged in the form of a photocell array, the number of photocells 3 in the photocell array is the same as the number of Fresnel lenses in the Fresnel lens array 1, and each photocell corresponds to a Fresnel lens . Specifically, each photocell 3 is located at the focusi...

Embodiment 2

[0059] Considering that when the arrayed concentrating solar photovoltaic device provided by Embodiment 1 of the present invention is applied to a photovoltaic power generation system that does not use a solar tracking device, if the height of the sun changes, the sunlight incident on the Fresnel lens array will be non-perpendicular , at this time, part of the marginal rays cannot reach the light-receiving area of ​​the photocell corresponding to each Fresnel lens after being refracted by each effective Fresnel lens, and the utilization rate of solar energy is reduced. In order to solve this problem, on the basis of the first embodiment above, the second embodiment of the present invention provides another dense array concentrated solar photovoltaic device. Added to the solar photovoltaic device: at least two compound curved reflectors located between the Fresnel lens array 1 and the planar substrate 2 . The at least two composite curved mirrors are closely arranged to form a ...

Embodiment 3

[0066] Similar to the second embodiment, in order to further improve the solar energy utilization rate of the array concentrated solar photovoltaic device provided by the first embodiment, on the basis of the first embodiment, the third embodiment of the present invention provides another dense array concentrated solar photovoltaic device. Solar photovoltaic device, this kind of device adds at least two funnel-shaped plano-convex lenses to any dense array concentrated solar photovoltaic device provided in Embodiment 1.

[0067] Such as Figure 10 Shown is one of the structural schematic diagrams of the arrayed concentrating solar photovoltaic device with plano-convex lenses provided by Embodiment 3 of the present invention. Depend on Figure 10 It can be seen that the device is figure 1 On the basis shown, at least two funnel-shaped plano-convex lenses 12 located between the Fresnel lens array 1 and the planar substrate 2 are added. The at least two plano-convex lenses 12 a...

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Abstract

The invention relates to a dense array concentrating solar energy photovoltaic device, and belongs to the field of photovoltaic. The dense array concentrating solar energy photovoltaic device comprises a Fresnel lens array, a plane substrate and at least two photo cells, wherein the Fresnel lens array is arranged at a top layer and is an integrated lens; the upper surface of the Fresnel lens is a plane and the lower surface of the Fresnel lens is provided with at least two groups of concentric ring-shaped saw teeth; each group of concentric ring-shaped saw teeth forms a Fresnel lens; the Fresnel lenses are arranged in an array mode; the plane substrate is arranged at a bottom layer; the at least two photo cells are arranged on the upper surface of the plane substrate and in a photo cell array mode; the number of the photo cells in the photo cell array is the same as the number of the Fresnel lens in the Fresnel lens array; and each photo cell corresponds to one Fresnel lens. The array concentrating solar energy photovoltaic device is simple in heat dissipation, short in concentrating focus and high in solar energy utilization rate, and does not require electrode arrangement inside a photo cell chip.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a dense array concentrated solar photovoltaic device. Background technique [0002] Solar energy is one of the most valuable clean energy sources and an important part of the future basic energy. Solar photovoltaic power generation technology directly converts solar energy into electrical energy. [0003] However, the price of solar power generation systems has remained high for a long time, mainly due to the low density of solar energy and the low conversion efficiency of solar cells. In order to reduce the price of solar power generation systems, high-power concentrating solar photovoltaic power generation technology has emerged as the times require. Concentrating photovoltaic power generation technology amplifies the received solar energy by hundreds or thousands of times through transmission or reflection, and then focuses the amplified energy on small photocells with extremely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S40/22H01L31/052H01L31/054
CPCY02E10/52
Inventor 王智勇叶征宇卫明王桐
Owner REDSOLAR NEW ENERGY TECH
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