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Saving type ink jet printing process for solar cell grid lines

A solar cell, inkjet printing technology, applied in the printing process, printing and printing of special varieties of printed matter, can solve the problems of waste of paste, no cost advantage, etc., to save paste, reduce costs, and meet the requirements of electrical conductivity. effect of sexual demands

Inactive Publication Date: 2011-08-17
ALTUSVIA ENERGY TAICANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This design ensures the conductivity of the grid line, but it wastes paste and has no cost advantage

Method used

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  • Saving type ink jet printing process for solar cell grid lines
  • Saving type ink jet printing process for solar cell grid lines

Examples

Experimental program
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0017] As shown in the accompanying drawing: a kind of energy-saving inkjet printing process of grid lines of solar cells, the process includes the following steps:

[0018] 1. Prepare the inkjet printing equipment and make the silver-containing paste into ink;

[0019] 2. Inkjet printing along the route of the fine grid line, the amount of paste sprayed by the nozzle is proportional to the cross-sectional area of ​​the fine grid line, and the amount of paste printed at both ends of the fine grid line is smaller than the amount of paste printed near the main grid line , so that the cross-sectional area of ​​both ends of the thin grid line is smaller than the cross-sectional area of ​​the thin grid line close to the busbar, so as to match cells with different requirements.

[0020] In the second step, the cross-sectional area of ​​the thin grid is ch...

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PUM

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Abstract

The invention discloses a saving type ink jet printing process for solar cell grid lines. Grid lines with large sectional areas are printed at parts needing large current by controlling the sectional areas of thin grid lines at different positions, so as to satisfy the electrical conductivity requirements; and grid lines with small sectional areas are printed at parts needing no large current, so as to save a sizing agent and reduce the cost.

Description

technical field [0001] The invention relates to a metallization process of a solar cell, in particular to an energy-saving solar cell grid line ink-jet printing process. Background technique [0002] Solar cells use the photoelectric effect to generate electricity; under the light, electrons concentrate on the front, and positive charges concentrate on the back, and are collected by the metal grid lines on the front and back respectively, and the electric energy is transmitted to the external circuit through the metal grid lines. In the current large-scale production of solar cells, the metal paste is usually printed on the surface of the cell by screen printing, and then sintered to form a cell. [0003] Metal grid lines are divided into main grid lines and thin grid lines. The function of the thin grid lines is to collect the photocurrent from all over the cell and collect them on the main grid lines. The function of the main grid lines is to connect with external circuits...

Claims

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Application Information

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IPC IPC(8): B41M3/00B41J3/01H01L31/0224B41J2/01H01L31/18
CPCY02P70/50
Inventor 孟津张斌邢国强李晓辉
Owner ALTUSVIA ENERGY TAICANG
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