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Photovoltaic solar cell electrode grid line in-situ secondary printing device and method

A technology of solar cells and electrode grid lines, which is applied in photovoltaic power generation, printing devices, printing and other directions, can solve the problems of difficulty in printing, reduce production efficiency, and visual positioning cost, and achieve convenient operation, high production efficiency, and fast printing speed. Effect

Pending Publication Date: 2020-01-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the time spent on visual positioning will reduce the efficiency of production
On the other hand, in order to ensure the accuracy of the second printing, the width of the second printing is often much narrower than that of the first printing, which makes it difficult to realize the printing with three or more printing times.

Method used

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  • Photovoltaic solar cell electrode grid line in-situ secondary printing device and method
  • Photovoltaic solar cell electrode grid line in-situ secondary printing device and method
  • Photovoltaic solar cell electrode grid line in-situ secondary printing device and method

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Embodiment 1

[0036] This embodiment discloses an in-situ secondary printing device for grid lines of photovoltaic solar cells, such as figure 1 As shown, it includes a base 11 , a silver paste carrier 1 and a silver paste carrier motion control device 6 .

[0037] Wherein, the base 11 is used to place the printed silicon wafer 4 . Such as image 3 As shown, the silicon wafer is printed once or more than once, and there are gate lines 8 generated by printing on the silicon wafer.

[0038] Such as figure 2 As shown, the base 11 is provided with an adsorption device 10 through which the silicon wafer is adsorbed on the base. The adsorption device in this embodiment is a suction cup, and the adsorption force of the suction cup can ensure that the silicon wafer can be tightly attached to the base. The number and distribution position of the suction cups are not unique, as long as the stress on each part of the silicon wafer is uniform and can be fixed on the base.

[0039] The silver paste...

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Abstract

The invention discloses a photovoltaic solar cell electrode grid line in-situ secondary printing device and method. The device comprises a base, a silver paste carrier and a silver paste carrier motion control device. The base is used for placing a printed silicon wafer; the silver paste carrier is arranged above the base, a groove used for smearing a silver paste film with a certain thickness isformed in the silver paste carrier, and the opening of the groove faces the base; the silver paste carrier is installed on the silver paste carrier motion control device, and the silver paste carriermotion control device controls the silver paste carrier to move up and down relative to the base above the base. According to the invention, in-situ secondary printing of the silicon wafer can be achieved, a grid line with a higher depth-to-width ratio is obtained, the printing speed is high, and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to an in-situ secondary printing device and method for electrode grid lines of photovoltaic solar cells. Background technique [0002] A photovoltaic solar cell is a device that uses the photovoltaic effect to convert light energy into electrical energy. The types of photovoltaic solar cells can be roughly divided into three categories: crystalline silicon photovoltaic solar cells, thin-film photovoltaic solar cells and other categories. Among them, crystalline silicon photovoltaic solar cells have become the main varieties of solar cells because of their high reliability, long life, relatively low cost, and ability to withstand various environmental changes. In photovoltaic solar cells, it is the front and back grid electrodes that collect charges and conduct electricity, and the silver paste on the front of the solar cell is the main component of the front electrode grid of...

Claims

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Application Information

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IPC IPC(8): H01L31/0224B41F15/08B41M1/12
CPCH01L31/022425B41F15/08B41M1/12Y02E10/50
Inventor 张宪民单译琳
Owner SOUTH CHINA UNIV OF TECH
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