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Solar cell grid line design method for grid line shielding loss reducing photovoltaic glass

A technology of solar cells and photovoltaic glass, applied in the field of solar cells, can solve problems such as mismatching

Active Publication Date: 2018-12-11
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST +1
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  • Abstract
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  • Application Information

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Problems solved by technology

This patent overcomes the problem of mismatch between grid line design and "shading reduction glass" in the prior art to enhance solar cell efficiency

Method used

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  • Solar cell grid line design method for grid line shielding loss reducing photovoltaic glass
  • Solar cell grid line design method for grid line shielding loss reducing photovoltaic glass
  • Solar cell grid line design method for grid line shielding loss reducing photovoltaic glass

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Embodiment Construction

[0033] In order to further understand the content of the invention, features and effects of the present invention, the following examples are given hereby, and the details are as follows:

[0034] see Figure 1-3 , a solar cell grid design method for reducing grid line shading loss photovoltaic glass, using "reduced shading glass" solar cells to provide a grid design solution to overcome the grid line design and "reduced shading glass" in the prior art Mismatch issues to further enhance solar cell efficiency.

[0035] The structure of solar cells using "shading-reducing glass" is as follows: figure 1 As shown: on the upper surface of the photovoltaic glass substrate 6, there are busbar glass V-grooves 1 and fine-grid glass V-grooves 2 perpendicular to each other; There are three parts: the sun rays 4 incident on the groove and the sun rays 5 incident on the non-grooved glass surface; the solar cell grid 7 directly below the V groove is arranged on the upper surface of the so...

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Abstract

The invention discloses a solar cell grid line design method for grid line shielding loss reducing photovoltaic glass, belonging to the technical field of solar cells. The method is characterized in that the solar cell grid line design method comprises the following steps of: determining the fine grid loss; Specifically, the heat loss of solar cell grid line Pf, the heat loss of surface resistancePv and the shielding loss of grid line Pu are taken as the main factors to measure the fine grid loss of solar cell. 2, determine that efficiency loss of the main gate; 3, determine that total grid line loss; Step 4, after the introduction of the shielding reducing glass, the efficiency loss of the main grid and the efficiency loss of the solar cell fine grid are revised. By adopting the technical proposal, the invention aims at the defects of the prior art, adopts the grid line design of a solar cell with shielding reducing glass, introduces a grid line shielding factor, thereby further optimizing the grid line design and optimizing the conversion efficiency of the solar cell.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a solar cell grid design method for reducing grid line shading loss photovoltaic glass. Background technique [0002] Solar energy is an inexhaustible source of energy. Solar cells can be used to convert solar energy into electrical energy. This method of power generation is clean and pollution-free, and has a very broad prospect. Solar cells generally use silicon as the main raw material. Using the photoelectric effect characteristics of silicon semiconductors, a large-area silicon diode structure is used to effectively receive sunlight, and the surface grid lines are used to export the photo-generated current to the external circuit to realize the function of power generation. [0003] In the process of processing silicon solar cells into battery modules, photovoltaic glass is used to cover the surface of silicon solar cells by lamination to achieve protection. The prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224
CPCH01L31/022433Y02E10/50
Inventor 李晓东杜永超孙希鹏铁剑锐梁存宝王鑫刘春明许军肖志斌
Owner CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
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