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Method for scratching and splitting solar cell and scratching and splitting equipment for scratching and splitting solar cell

A technology of solar cells and cells, applied in welding equipment, laser welding equipment, metal processing equipment, etc., can solve the problems of cell cracking, precise control of difficult cooling medium, cell fouling, etc., and achieve extremely low thermal expansion coefficient, improving scribing quality and efficiency, and avoiding fouling effects

Pending Publication Date: 2022-01-21
NINGXIA XN AUTOMATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the problem of fouling the cells by using the cooling medium, and to overcome the technical problem that it is difficult to precisely control the cooling medium when the temperature difference is formed on the cells by using the cooling medium, which leads to defects in the cell cracking, the present invention adopts A new technology for splitting cells without using cooling medium

Method used

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  • Method for scratching and splitting solar cell and scratching and splitting equipment for scratching and splitting solar cell
  • Method for scratching and splitting solar cell and scratching and splitting equipment for scratching and splitting solar cell
  • Method for scratching and splitting solar cell and scratching and splitting equipment for scratching and splitting solar cell

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Embodiment 1

[0048] figure 1 A method for scribing a solar cell sheet is illustrated. In this embodiment, taking economical and material properties into consideration, the bearing platform of low thermal conductivity and high temperature resistant material is made of quartz glass.

[0049] Firstly, the first laser beam and the second laser beam are applied to the coincident position with the line to be split of the battery sheet, and then the quartz glass carrier of the battery sheet transmission part carries the solar battery sheet 100 through the first laser beam and the second laser beam , where the first laser beam ablates the cell to be split line 100-1 with a certain length of groove, the second laser beam heats the cell to be split line along the split line and its extension line, the solar cell Break along the line to be split to complete the scribing of solar cells.

[0050] When the quartz glass carrying platform carries the solar cells through the focusing point of the first l...

Embodiment 2

[0066] Figure 8 It shows a schematic diagram of the moving direction of each component when the battery sheet 100 is cut. The difference between the second embodiment and the first embodiment is that the quartz glass carrier and the battery sheet 100 are fixedly arranged, and the first laser 21 and the second laser 22 are in the movement mechanism. Driven to move in the direction of the arrow to complete the cutting of the battery sheet 100 .

[0067] Working principle: Manually adjust the first laser up and down fine-tuning assembly 23 and the first laser horizontal fine-tuning assembly 24, so that the laser focus point emitted by the first laser 21 is located on the line to be split 100-1 in the middle of the solar cell 100; manually adjust the second The laser trimming assembly 25 makes the focal point of the laser emitted by the second laser 22 coincide with the focal point of the first laser.

[0068] The lifting drive assembly 32 moves to the front end of the equipment...

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Abstract

The invention provides a method for scratching and splitting a solar cell and scratching and splitting equipment for scratching and splitting the solar cell. The method mainly adopts two beams of laser to ablate and heat the cell along a to-be-split line of the cell, and meanwhile, a low-heat-conduction high-temperature-resistant material bearing table for bearing the cell and the to-be-split line section of the heated cell form a temperature gradient at a top speed, the to-be-split line section of the cell simultaneously generates relatively large pressure stress and shear stress, so that the cell is split along the to-be-split line, and the scratching and splitting of the cell are completed. The equipment adopted by the method mainly comprises a fixing frame used for installing all parts, a cell conveying part, the low-heat-conduction high-temperature-resistant material bearing table and a laser assembly. The cell conveying part is used for conveying the solar cell so as to enable the solar cell to move relative to a focus point of the first laser beam and the second laser beam along a split line path; the low-heat-conduction high-temperature-resistant material bearing table is used for bearing the cell; and the laser assembly is used for generating the first laser beam and the second laser beam.

Description

technical field [0001] The invention relates to a laser beam severing processing technology for a solar cell, in particular to a method for slicing a solar cell. The present invention also relates to the special cracking equipment used in the cracking method. Background technique [0002] With the rapid promotion and application of laminated module technology, the technology of splitting and splitting solar cells has been rapidly developed. The core technology of laminated module technology is the cell splitting technology. The existing cell splitting technology uses a laser to cut a crack on the surface of the cell, and then splits the solar cell by mechanical breaking. Open; two lasers are also used, one laser is used to draw the splitting line of the cell, and the other laser heats the splitting line of the cell, and then splits the cell under the action of the cooling medium, such as the patent that the applicant has applied for "A solar cell cutting method and its cut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/362B23K26/70B23K26/08B23K26/067H01L31/18H01L21/78
CPCB23K26/362B23K26/702B23K26/0876B23K26/067H01L31/186H01L21/78Y02E10/50Y02P70/50
Inventor 雍刚杨廷会
Owner NINGXIA XN AUTOMATION EQUIP CO LTD
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