Concentration and power generation system
A technology of power generation system and concentrating system, which is applied in the field of solar cells, can solve the problems of high cost and cost reduction of concentrating power generation system, and achieve the effect of solving high cost, reducing power generation cost, and low cost
Inactive Publication Date: 2011-08-17
普尼太阳能(杭州)有限公司
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[0006] The invention provides a concentrating power generation system, which adopts low-cost thin-film solar cells, is equipped with a low-cost concentrating system, and does not require a heat dissipation system, thereby greatly reducing the cost of the concentrating power generation system and solving the problem of the existing concentrating power generation system. The problem of high system cost
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[0037] The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited thereto.
[0038] In the prior art, the structure of traditional CIGS thin film battery is as follows figure 1 As shown, it includes a substrate 121, and molybdenum 122, CIGS123, CdS124, high resistance ZnO125, conductive ZnO126, metal grid lines 127 and anti-reflection film MgF deposited on the substrate 121 in sequence 2 128, the back contact electrode 129 is indium.
[0039] The power generation efficiency of conventional CIGS thin film cells varies with light intensity as shown in figure 2Shown:
[0040] Cell efficiency can be improved under concentrating conditions (up to 15 suns) compared to the efficiency of the cell under the standard 1 sun. The efficiency of CIGS thin-film cells reaches 8.6% under 5 suns, which is 15% higher than the efficiency (7.4%) under 1 sun.
[0041] The metal grid lines 127 o...
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The invention discloses a concentration and power generation system, which comprises a concentration system and a photoelectric conversion system, wherein the photoelectric conversion system is formed by connecting a plurality of thin film solar cells in series, each thin film solar cell comprises a substrate, as well as a back contact electrode, an action layer, a buffer layer, a transparent conductive layer and a metal grid line, which are sequentially deposited on the substrate, each substrate is a heat conduction substrate, each action layer comprises the following components: a-Si: H, CdTe, Cu(InGa)Se2, an organic matter photoelectric conversion material or a dye-sensitized photoelectric conversion material, and each metal grid line has a reticular structure. The concentration and power generation system adopts the low-cost thin film cells, a tracking system is not required under lower concentration ratio, and the power generation cost is effectively reduced. The concentration and power generation system is simple in structure and low in cost.
Description
technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a concentrating power generation system. Background technique [0002] Solar energy is a clean and renewable energy source that can be converted into thermal energy, electrical energy, etc. by applying a variety of technologies. The application of solar energy spans the residential, commercial, industrial, agricultural and transportation fields, and the most widely used application is solar photovoltaic power generation. However, the current cost of solar power generation is generally several times higher than that of fossil fuels. Therefore, it is still necessary to further reduce the cost of solar power generation, so that solar power becomes a more suitable energy choice. [0003] One way to reduce the cost of generating electricity from the sun is to use refractive lenses or mirrors to concentrate sunlight onto photovoltaic cells. Such a system is called a c...
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IPC IPC(8): H01L31/052H01L31/0224H02S40/22
CPCY02E10/52Y02E10/50Y02E10/542
Inventor 王东于平荣李学耕
Owner 普尼太阳能(杭州)有限公司