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Photovoltaic cell module

A photovoltaic cell and module technology, applied in the field of solar photovoltaic power generation, can solve the problems of unavoidable mutual charging and discharging of cells, consuming a lot of manpower, material resources and time, and affecting the reliability and life of battery packs, so as to improve the actual power generation capacity, The effect is obvious, the effect of improving the photoelectric conversion efficiency

Inactive Publication Date: 2013-06-19
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although frequent dust removal of photovoltaic cells can reduce the impact of dust accumulation on photovoltaic cells to a certain extent, this dust removal is intermittent, and it is still normal for the surface of the battery to be covered with dust, which has not fundamentally eliminated its impact, and This dust removal process will still consume a lot of manpower, material resources and time. At the same time, the periodic change of the dust on the surface of the battery sheet from accumulation to removal cannot avoid the mutual charge and discharge between the battery sheets, so it will still affect the reliability and life of the battery pack. have a serious impact

Method used

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Embodiment 1

[0030] refer to figure 2 , image 3 The photovoltaic cell assembly provided in this embodiment includes: a substrate 101 , a plurality of photovoltaic cell sheets 102 on the substrate 101 , and a frame 103 disposed around the substrate 101 . The photovoltaic cells 102 may be monocrystalline silicon photovoltaic cells or polycrystalline silicon photovoltaic cells. The substrate 101 includes a transparent top surface layer 1011 , a sealing material 1012 and a back layer 1013 from top to bottom, and the plurality of photovoltaic cells 102 are located in the sealing material 1012 . The transparent top surface layer 1011 may be made of photovoltaic glass, the sealing material 1012 may be EVA (ethyl vinyl acetate, ethyl vinyl acetate), and the back layer 1013 may be Tedlar.

[0031] The plurality of photovoltaic cells 102 are arranged in an array on the substrate 101 , with 12 photovoltaic cells 102 in each row and 6 photovoltaic cells 102 in each column. Such as figure 2As sh...

Embodiment 2

[0037] Such as Figure 6 As shown, the photovoltaic cell assembly provided in this embodiment is similar to the first embodiment, including: a substrate 201 , a plurality of photovoltaic cell sheets 202 on the substrate 201 , and a frame 203 disposed around the substrate 201 . The plurality of photovoltaic cells 202 are arranged in an array on the substrate 201 . The difference from the first embodiment is that in this embodiment, each row has 6 photovoltaic cells 202 , and each column has 12 photovoltaic cells 202 .

[0038] Since the photovoltaic cell module of the present invention adopts an asymmetric design, it may be placed horizontally or vertically during actual installation. Considering different installation requirements, battery modules can be designed for horizontal and vertical installation respectively. Embodiment 1 is suitable for horizontal installation, and Embodiment 2 is for corresponding vertical installation.

Embodiment 3

[0040] Such as Figure 7 As shown, this embodiment provides another photovoltaic cell assembly, including: a substrate 301 , a plurality of photovoltaic cell sheets 302 located on the substrate 301 , and a frame 303 disposed around the substrate 301 . Wherein, the photovoltaic cells 302 may be monocrystalline silicon photovoltaic cells or polycrystalline silicon photovoltaic cells. The substrate 301 sequentially includes a transparent top surface layer, a sealing material and a back layer from top to bottom, and the plurality of photovoltaic cells 302 are located in the sealing material. The transparent top surface layer can be made of glass, the sealing material can be EVA (ethyl vinyl acetate, ethyl vinyl acetate), and the back layer can be Tedlar.

[0041] The plurality of photovoltaic cells 302 are arranged in an array on the substrate 301 , with 10 photovoltaic cells 302 in each row and 6 photovoltaic cells 302 in each column. Such as Figure 7 As shown, the shortest d...

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Abstract

The invention discloses a photovoltaic cell module. The photovoltaic cell module comprises a base plate, a plurality of photovoltaic cell pieces which are positioned on the base plate and a frame which is arranged at the periphery of the base plate; the photovoltaic cell pieces are distributed in arrays; and the shortest distance between at least one side of the base plate and the photovoltaic cell pieces is more than twice the height difference between the frame and the base plate. According to the photovoltaic cell module, the conventional symmetrical structural design is eliminated; the possibility that cells at the lower end of the surface of the cell module are blocked by dust is avoided radically by using the asymmetry of cell piece distribution; and under the actual installation condition, the photoelectric conversion efficiency of the photovoltaic cell module is greatly improved.

Description

technical field [0001] The invention relates to solar photovoltaic power generation technology, in particular to a photovoltaic cell assembly. Background technique [0002] Photovoltaic cell modules usually include multiple photovoltaic cell sheets, substrates and supporting frames. Photovoltaic cells are used to absorb sunlight and convert sunlight into electrical energy; the substrate is used to carry multiple photovoltaic cells. Usually, multiple photovoltaic cells are connected in series and parallel and evenly arranged on the substrate in the form of an array. Above; the support frame has a certain strength for the support and installation of photovoltaic cell modules. [0003] In photovoltaic power generation systems, such as photovoltaic roofs, large-scale desert photovoltaic power plants, etc., in order to absorb as much sunlight as possible by photovoltaic cells, or to make full use of the actual lighting surface such as the roof, the installation of photovoltaic c...

Claims

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Application Information

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IPC IPC(8): H01L31/042H01L31/048
CPCY02E10/50
Inventor 周继承文佳伟叶支斌易强
Owner CENT SOUTH UNIV
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