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Dense array-type concentrating solar photovoltaic device

A technology for concentrating solar energy and photovoltaic devices, which is applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of arranging electrodes, long concentrating focal length photovoltaic cell chips, and difficulty in heat dissipation of solar cells, and achieves shortened concentrating focal length, Small focusing focal length, which is beneficial to miniaturization

Inactive Publication Date: 2016-10-12
KUNSHAN KEDE NEW ENERGY TECH
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  • Summary
  • Abstract
  • 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-type concentrating solar photovoltaic device
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Embodiment 1

[0039] Embodiment one: 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 .

[0040]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 locat...

Embodiment 2

[0049] Embodiment 2: 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 sun's altitude changes, the sun incident on the Fresnel lens array will The light is non-vertical incident. At this time, part of the marginal light 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...

Embodiment 3

[0055] Embodiment 3: Similar to Embodiment 2, in order to further improve the solar energy utilization rate of the array concentrated solar photovoltaic device provided in Embodiment 1, on the basis of Embodiment 1, Embodiment 3 of the present invention provides another dense An array concentrated solar photovoltaic device, which adds at least two funnel-shaped plano-convex lenses to any dense array concentrated solar photovoltaic device provided in Embodiment 1.

[0056] 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 are closely arranged into a plano-convex lens array, and t...

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Abstract

The invention relates to a dense array-type concentrating solar photovoltaic device, and belongs to the field of photovoltaics. The dense array-type concentrating solar photovoltaic device comprises a Fresnel lens array, a planar substrate and at least two photocells, wherein the Fresnel lens array is located on a top layer; the Fresnel lens array is an overall lens, the upper surface is a plane and the lower surface is provided with at least two groups of sawteeth in a concentric ring form; each group of concentric rings form a Fresnel lens; all Fresnel lenses form an array form; the planar substrate is arranged on a bottom layer; at least two photocells are arranged on the upper surface of the planar substrate and are arranged in an photocell array form; the number of the photocells in a photocell array is the same as that of the Fresnel lenses in the Fresnel lens array; and each photocell corresponds to one Fresnel lens. The dense array-type concentrating solar photovoltaic device provided by the invention is simple in heat dissipation, short in concentrating focal length and high in solar energy utilization ratio; and an electrode does not need to be arranged in a photocell chip.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a dense array concentrated solar photovoltaic device. technical background [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 Applications(China)
IPC IPC(8): H01L31/054H01L31/0525
CPCY02E10/52H01L31/0543H01L31/0547
Inventor 熊勇军
Owner KUNSHAN KEDE NEW ENERGY TECH
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