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Printing deviation measuring method, printing method and printing device for solar cell plate

A solar cell sheet and printing method technology, applied in printing devices, measuring devices, optical devices, etc., can solve the problems that rotary table printing cannot meet the printing accuracy of solar cell electrodes, achieve rapid position adjustment, improve accuracy, reduce The effect of vibration

Active Publication Date: 2011-04-06
SUZHOU MAXWELL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problem that the rotary table printing in the prior art cannot meet the precision required for solar cell electrode printing, the present invention provides a deviation measurement method for solar cell printing, which includes the following steps:

Method used

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  • Printing deviation measuring method, printing method and printing device for solar cell plate
  • Printing deviation measuring method, printing method and printing device for solar cell plate
  • Printing deviation measuring method, printing method and printing device for solar cell plate

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Experimental program
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Embodiment 1

[0045] Such as Figure 1-3 As shown, the rotary table 1 of the device for solar cell sheet electrode printing in this embodiment is as figure 1 As shown (the power mechanism, control system, etc. are not shown in the figure), there are 4 stations 2 evenly distributed on the rotary table 1, followed by waiting station 11, printing station 12, film output station 13 and Scrap film station 14. At the same time, circular identification marks 15 are respectively arranged on the outer edge sides of the rotary table corresponding to the four stations. Certainly, the identification mark 15 may also be in any shape convenient for the CCD camera 4 to identify, such as square. CCD cameras 4 are arranged respectively at the same height as the circular identification marks 15 near the outer edge of the rotary table 1, for photographing the identification marks 15 and obtaining the actual position data of each station, and transmitting the data to the control system, Calculate the positi...

Embodiment 2

[0050] In this embodiment, the printing method for the solar cells on the rotary table adopts the printing device as described in Embodiment 1. Such as Figure 4 As shown, it is a flow chart from the primary printing of the silver grid lines to the secondary overprinting of the silver grid lines of the solar cells. First, after the solar cells are transported to the waiting station 11, the CCD camera 4 measures the actual position P1' of the solar cells at the waiting station 11, and at the same time, the actual position M' of the waiting station 11 is measured by the CCD camera 4 And transmit the measured data to the control system; then, the control system calculates the position deviation ΔP1 of the solar cells according to the preset position P1 of the waiting station 11 and the actual position P1'; then, the solar cells rotate with The rotation of the worktable 1 is transmitted to the printing station 12, and the actual position N' of the printing station is measured by ...

Embodiment 3

[0055] The deviation measurement method for solar cell sheet printing in this embodiment includes: firstly, the solar cell sheet is adsorbed and positioned by vacuum adsorption equipment through a plurality of micropores opened in the waiting position, and then the solar cell sheet is positioned near the waiting station 11. The actual position P1' of the solar cells and the actual position P1'' of the waiting station are captured by the CCD camera respectively, and the position information is transmitted to the control system; Calculate the positional deviation ΔP1 of the solar cells from the actual position P1′; then, after the rotary table 1 rotates 90 degrees, the CCD camera 4 arranged near the outer periphery of the rotary table 1 measures the movement of the waiting station 11 to The actual position P2' behind the printing station 12, and the position information is transmitted to the control system; the control system calculates the printing station according to the prese...

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Abstract

The invention relates to a printing deviation measuring method, a printing method and a printing device for a solar cell plate. The deviation measuring method comprises the following steps of: A. measuring the actual position P1' of the solar cell plate at a waiting station after plate feeding, and calculating the position deviation delta P1 of the solar cell plate according to a preset position P1 of the solar cell plate; B. measuring the actual position M' of one station of a rotating work table at the waiting station and the actual position N' of the rotating work table after the rotating work table rotates to a printing station, and calculating the position deviation delta M and delta N of the station respectively on the waiting station and the printing station by combining the actual positions M' and N' with the preset position M of the waiting station and the preset position N of the printing station; and C. calculating the integrated position deviation delta P of the solar cell plate according to the position deviations delta P1, delta M and delta N in the step A and the step B. The invention regulates the position of a printing screen of the printing device according to the integrated position deviation delta P so that the positions of the printing screen and the solar cell plate are sufficiently coincided, thereby outstandingly enhancing the accuracy of final printing.

Description

[0001] technical field [0002] The invention relates to the manufacture of solar cells, in particular to a device for printing monocrystalline silicon and polycrystalline silicon solar cell electrodes on a rotary table and a printing method thereof. [0003] Background technique [0004] In order to improve the conversion efficiency of solar cells and reduce the contact resistance of the front electrode, a method of double-overprinting the front electrode has become popular in the industry. The two overprints increase the thickness of the front electrode without increasing the width of the electrode, which increases the efficiency of the cell by about 0.5%. The technical difficulty is that dozens of silver grid lines with a width of about 100 microns will be printed Twice, the offset between the two printings is preferably less than 1 micron, which poses a great challenge to the previous printing offset (generally acceptable within 50 microns) scheme and equipment. [000...

Claims

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Application Information

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IPC IPC(8): B41M1/12B41F15/08B41F33/00G01B11/00
Inventor 周剑施政辉李龙强
Owner SUZHOU MAXWELL TECH CO LTD
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