Method and glass for reducing solar cell grid line shading loss based on photovoltaic glass
A photovoltaic glass and solar cell technology, applied in the field of solar cells, can solve problems such as reducing the conversion efficiency of solar cells, and achieve the effect of reducing the shading effect and improving the efficiency
Active Publication Date: 2021-02-09
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST +1
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[0005] The purpose of the present invention is to: propose a method and glass based on photovoltaic glass to reduce the shading loss of solar cell grid lines; Line shading, reducing the conversion efficiency of solar cells
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[0042] 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:
[0043] see Figure 1-9 , a method for reducing grid line shading loss of solar cells based on photovoltaic glass, the photovoltaic glass prepared by rolling method, the front surface of the glass is provided with grid line distribution V grooves, comprising the following steps:
[0044] Step 1: Design of glass V-groove distribution: According to the solar cell grid design pattern, the distribution area of glass V-groove is the same as the distribution of the grid line pattern directly below after lamination, and keep the glass V-groove aligned with the grid line up and down during the lamination process , in order to achieve the effect of photovoltaic glass reducing grid line shadowing in the design of the present invention. In order to reduce the influence caused by the error of the ali...
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The invention discloses a method for reducing solar battery grid line shading loss based on photovoltaic glass and glass. The photovoltaic glass covers the upper surface of silicon solar cells and is used to protect silicon solar cells and reduce light reflection. It is characterized in that it includes: S1 1. Design V-shaped grooves on the upper surface of the photovoltaic glass, the number and spacing of the V-shaped grooves are the same as the number and spacing of the grid lines on the upper surface of the silicon solar cell, so that when the photovoltaic glass covers the upper surface of the silicon solar cell, the The V-shaped groove is located directly above the grid line on the upper surface of the silicon solar cell; S2, designing a letterpress roller according to the number and spacing of the V-shaped grooves; setting Λ-shaped protrusions on the outer surface of the cylindrical pressure roller; S3, using the letterpress pattern Rolling the photovoltaic glass with V-shaped grooves on the upper surface of the photovoltaic glass; S4, covering the photovoltaic glass obtained in S3 on the upper surface of the silicon solar cell. The invention can reduce the shielding effect of the solar cell surface grid wire on the solar cell and improve the efficiency of the solar cell.
Description
technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a method and glass for reducing the shading loss of grid lines of solar cells based on 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 a...
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IPC IPC(8): H01L31/0236H01L31/048
CPCH01L31/0236H01L31/048Y02E10/50
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