CN204195066U - A kind of laser scriber of photovoltaic cell - Google Patents
A kind of laser scriber of photovoltaic cell Download PDFInfo
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- CN204195066U CN204195066U CN201420612919.1U CN201420612919U CN204195066U CN 204195066 U CN204195066 U CN 204195066U CN 201420612919 U CN201420612919 U CN 201420612919U CN 204195066 U CN204195066 U CN 204195066U
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Abstract
The utility model relates to a kind of laser scriber of photovoltaic cell, comprise lasing light emitter, inner tube structure, outer tube structure, oxidizing gas source of the gas, extract system and scribing workbench, outer tube structure is set in inner tube structure outside, the light beam that lasing light emitter sends is radiated on scribing workbench through inner tube structure, the oxidizing gas of oxidizing gas source of the gas is injected into the forward of laser scribing by inner tube structure, extract system is bled by outer tube structure.The beneficial effects of the utility model are: cut into slices by Automatic laser, substantially increase production efficiency, and are separated because avoid manpower sheet, thoroughly can solve fragment that artificial breaking mode brings and hiddenly split problem; Simultaneously, by carrying out the mode being oxidized cleaning while cutting, carry out insulation processing to cut silicon chip edge conductive materials, the electric stress avoiding adjacent silicon chip point discharge produces, can cut into slices before photovoltaic cell is interconnected, also can carry out section segmentation after cell piece is interconnected.
Description
Technical field
The utility model relates to the dicing technique field of photovoltaic cell, particularly a kind of laser scriber of photovoltaic cell.
Background technology
Existing laserscribing only manufactures a deep trouth on the surface of the silicon chip of photovoltaic cell, then with this deep trouth for guiding, carry out cutting the separation of latter two part by the mode fractureed manually.Generally speaking, cell piece is after being subject to external force, and the deep well section that can mark along the laser that defect is the most serious ruptures and is separated.But in practical operation, because manually-operated finger force position is different, firmly varying in size of different finger, when sheet is separated, the Stress Field Distribution of photovoltaic cell inside is uneven is normality.Thus, usually have irregular fragment when artificial sheet is separated or irregularly hiddenly to split, the high-quality cutting rear photovoltaic cell cannot be ensured.Fragment problems in prior art can cause yield rate low, product cost raises, the hidden problem such as to split can cause the q&r of photovoltaic products significantly to decline, hiddenly split the thermal stress causing photovoltaic cell, electric stress and chemical stress centrostigma, easy formation hot spot, the defects such as black line, and become photovoltaic application hidden danger.
Simultaneously by the conductive materials that the cell piece marginal existence after existing laser scriber cutting is exposed, easily produce point discharge effect, cause electric stress.
Therefore, current small-sized section battery is difficult to connect with high quality of products, and laser dicing is crucial technical bottleneck.
Utility model content
Technical problem to be solved in the utility model is: have after photovoltaic cell cutting that cracked problem or cell piece are inner hidden to be split, and the exposed conductive materials of cell piece marginal existence simultaneously after cutting, easily produces point discharge effect, cause electric stress.
The utility model solves the technical scheme that its technical problem adopts: a kind of laser scriber of photovoltaic cell, comprise lasing light emitter, inner tube structure, outer tube structure, oxidizing gas source of the gas, extract system and scribing workbench, outer tube structure is set in inner tube structure outside, the light beam that lasing light emitter sends is through being radiated on the scribing workbench of placement photovoltaic cell after inner tube structure, the oxidizing gas of oxidizing gas source of the gas is injected into the forward of laser scribing by inner tube structure, extract system is bled by outer tube structure.
Further restriction, oxidizing gas is oxygen.
For carrying out gas flow guiding better, and vacuum siphons away neighbouring residue, limits further, and one end of the close scribing workbench of outer tube structure is horn mouth.
For protection scribing workbench, avoid laser beam damage scribing workbench, limit further, scribing workbench is transparent material, under scribing workbench, lay sacrifice layer.
Further restriction, transparent material is quartz glass.
Further restriction, sacrifice layer is silicon materials, wooden or plastics.
Further restriction, inner tube structure has the breather pipe for connecting oxidizing gas source of the gas, outer tube structure has the exhaust tube for connecting extract system, and oxidizing gas enters inner tube structure by breather pipe, extract system connects exhaust tube, and is bled by outer tube structure.
The beneficial effects of the utility model are: cut into slices by Automatic laser, avoid manual intervention, substantially increase production efficiency, and are separated because avoid manpower sheet, thoroughly can solve fragment that artificial breaking mode brings and hiddenly split problem; Simultaneously, by carrying out the mode being oxidized cleaning while cutting, carry out insulation processing to cut silicon chip edge conductive materials, the electric stress avoiding adjacent silicon chip point discharge produces, can cut into slices before photovoltaic cell is interconnected, also can carry out section segmentation after cell piece is interconnected.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated;
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of scribing workbench of the present utility model;
Fig. 3 is for edge is the structural representation of corrugated cell piece by dicing device of the present utility model section;
Fig. 4 is conventional laser scribing process flow chart;
Fig. 5 is laser scribe process flow chart of the present utility model;
In figure, 1. lasing light emitter, 2. takes a picture and figure navigation system, 3. breather pipe, 4. exhaust tube, 5. outer tube structure, 6. inner tube structure, 7. photovoltaic cell, 8. scribing workbench, 9. sacrifice layer.
Detailed description of the invention
As shown in Figure 1, a kind of laser scriber of photovoltaic cell, comprise lasing light emitter 1, inner tube structure 6, outer tube structure 5, oxidizing gas source of the gas, extract system and scribing workbench 8, it is outside that outer tube structure 5 is set in inner tube structure 6, one end of the close photovoltaic cell 7 of outer tube structure 5 is horn mouth, the light beam that lasing light emitter 1 sends is through being radiated on the scribing workbench 8 of placement photovoltaic cell 7 after inner tube structure 6, inner tube structure 6 has the breather pipe 3 for connecting oxidizing gas source of the gas, the oxidizing gas of oxidizing gas source of the gas enters inner tube structure 6 by breather pipe 3, and the forward of laser scribing is injected into by inner tube structure 6, outer tube structure 5 has the exhaust tube 4 for connecting extract system, extract system connects exhaust tube 4, and bled by outer tube structure 5.
As shown in Figure 2, different from the metal scribing workbench of conventional laser chopper and slicer, scribing workbench 8 of the present utility model is resistant to elevated temperatures transparent material, as quartz glass, be convenient to a small amount of superfluous laser can through quartz glass scribing workbench 8, and scribing workbench 8 can not be damaged.
The sacrifice layer 9 of black or light/dark balance is paved with for 8 times, for absorbing residual laser at scribing workbench.Sacrifice layer 9 is silicon materials, as the scrap silicon produced in photovoltaic cell production process, or directly applies wooden or plastics sacrifice layer.
The wavelength of the laser that lasing light emitter sends is 1064 ~ 800nm, and oxidizing gas is the industrial oxygen of concentration >99%.The laser scriber of this photovoltaic cell is by take a picture and the pattern of electrode print figure of figure navigation system 2 pairs of photovoltaic cells identifies, realize location, thus control scribing workbench 8 or laser beam move according to scribing designing requirement, the degree of accuracy can reach ± 10um.
High-temperature oxydation and vacuum cleaned combine by the laser scriber of this photovoltaic cell simultaneously.Oxidation and vacuum cleaning microenvironment is set up in scribe region by double layered tubular sleeve structure.In microenvironment, oxygen passes into from breather pipe 3, is ejected into the laser cutting forward of photovoltaic cell 7, while laser high-temperature machining, carries out edge oxidation after entering inner tube structure 6.Extract system is bled by outer tube structure 5, realizes cleaning dedusting and removes harmful gas effect.
As shown in Figure 4, existing laserscribing requires the series welding that just can carry out between laser scribing between cell piece, customizes degree low.As shown in Figure 5, this laser dicing device not only can be cut into slices before photovoltaic cell is interconnected, and can carry out section segmentation after cell piece is interconnected, and ensures being electrically insulated between adjacent dice, makes the customization of photovoltaic products become possibility.
Shown in Fig. 1, after photovoltaic cell 7 forms battery strings, be placed on scribing workbench 8 and cut, although distance is very near between adjacent dice, still can ensure being electrically insulated between small pieces.
Meanwhile, what this laser dicing device also made the generator unit of irregular figure creates possibility on a large scale.In an example, as shown in Figure 3, it is corrugated small pieces that photovoltaic cell can be separated into edge, is beneficial to be applied in aesthetics and to require high occasion.In this case, by laser aid of the present utility model, CAD and manufacture in enormous quantities can be carried out easily.
Claims (7)
1. the laser scriber of a photovoltaic cell, it is characterized in that: comprise lasing light emitter (1), inner tube structure (6), outer tube structure (5), oxidizing gas source of the gas, extract system and scribing workbench (8), it is outside that outer tube structure (5) is set in inner tube structure (6), the light beam that lasing light emitter (1) sends is through being radiated on the scribing workbench (8) of placement photovoltaic cell (7) after inner tube structure (6), the oxidizing gas of oxidizing gas source of the gas is injected into the forward of laser scribing by inner tube structure (6), extract system is bled by outer tube structure (5).
2. the laser scriber of photovoltaic cell according to claim 1, is characterized in that: described oxidizing gas is oxygen.
3. the laser scriber of photovoltaic cell according to claim 1 and 2, is characterized in that: one end of the close scribing workbench (8) of described outer tube structure (5) is horn mouth.
4. the laser scriber of photovoltaic cell according to claim 1 and 2, is characterized in that: described scribing workbench (8) is transparent material, lays sacrifice layer (9) under scribing workbench (8).
5. the laser scriber of photovoltaic cell according to claim 4, is characterized in that: described transparent material is quartz glass.
6. the laser scriber of photovoltaic cell according to claim 4, is characterized in that: described sacrifice layer (9) is silicon materials, wooden or plastics.
7. the laser scriber of photovoltaic cell according to claim 1 and 2, it is characterized in that: described inner tube structure (6) has the breather pipe (3) for connecting oxidizing gas source of the gas, outer tube structure (5) has the exhaust tube (4) for connecting extract system, oxidizing gas enters inner tube structure (6) by breather pipe (3), extract system connects exhaust tube (4), and is bled by outer tube structure (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612919.1U CN204195066U (en) | 2014-10-22 | 2014-10-22 | A kind of laser scriber of photovoltaic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612919.1U CN204195066U (en) | 2014-10-22 | 2014-10-22 | A kind of laser scriber of photovoltaic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204195066U true CN204195066U (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420612919.1U Active CN204195066U (en) | 2014-10-22 | 2014-10-22 | A kind of laser scriber of photovoltaic cell |
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| Country | Link |
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| CN (1) | CN204195066U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353933A (en) * | 2014-10-22 | 2015-02-18 | 信阳师范学院 | Laser scribing device for photovoltaic cells |
| CN111816557A (en) * | 2020-07-20 | 2020-10-23 | 浙江晶科能源有限公司 | Solar cell cutting method, solar cell cutting equipment and photovoltaic module |
-
2014
- 2014-10-22 CN CN201420612919.1U patent/CN204195066U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353933A (en) * | 2014-10-22 | 2015-02-18 | 信阳师范学院 | Laser scribing device for photovoltaic cells |
| CN111816557A (en) * | 2020-07-20 | 2020-10-23 | 浙江晶科能源有限公司 | Solar cell cutting method, solar cell cutting equipment and photovoltaic module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |