CN105336812A - Method for cutting full-back-contact crystalline silicon solar cell - Google Patents
Method for cutting full-back-contact crystalline silicon solar cell Download PDFInfo
- Publication number
- CN105336812A CN105336812A CN201510562866.6A CN201510562866A CN105336812A CN 105336812 A CN105336812 A CN 105336812A CN 201510562866 A CN201510562866 A CN 201510562866A CN 105336812 A CN105336812 A CN 105336812A
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- cutting
- positive
- solar
- bus bar
- sheet
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- 238000005520 cutting process Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910021419 crystalline silicon Inorganic materials 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a method for cutting a full-back-contact crystalline silicon solar cell, and the method is used for cutting the whole solar cell into small pieces. The method comprises the steps: setting a cutting parameter of a solar laser scribing machine; enabling the front of the solar cell to face upwards and to be fixed a right-angle cutting platform of the laser scribing machine through vacuum absorption; setting a cutting width parallel to a busbar to be integral multiples of the width of a positive-negative busbar; carrying out cutting under the condition that the cutting depth is less than the thickness of the solar cell; marking the positive and negative electrode; and breaking the pieces off. The method can effectively improve the yield of solar cells, improves the production efficiency of the solar cells, also can prevent the positive and negative electrodes of the solar cells from going wrong, and provides a reliable guarantee for the subsequent high-speed and high-quality manufacturing of a solar cell module.
Description
Technical field
The present invention relates to finished product or the semi-finished product processing technique field of solar module, particularly a kind of cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising sheet.
Background technology
Solar battery sheet take generally crystalline silicon as base material, and the front of base material is provided with navy blue antireflection layer, and front is provided with intensive bus bar, and the back side is provided with conductive layer, in order to collect the electric energy that sunlight conversion produces, and is collected on main bus bar.
Normally, according to the overall dimension of user to solar module and the difference of unit for electrical property parameters, need the solar battery sheet solar battery sheet of monoblock being cut into small pieces, then welding series connection is attached on pcb board again, form available solar module, so how effectively cutting solar battery sheet fast becomes technical issues that need to address.And the solar cell piece preparation method of the at present employing back side cutting of main flow, easily cause that bus bar is destroyed or cut lengths are relatively fixing, cause yields and utilance not high, directly cause waste of material and cost to increase.
Summary of the invention
Main purpose of the present invention is, provides a kind of cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising sheet, the cutting of solar panel can be made to become simple, and effectively can improve yields and the utilance of solar battery sheet.
For achieving the above object, the present invention by the following technical solutions.
The invention provides a kind of cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising sheet, for the solar battery sheet of full wafer being cut into the solar battery sheet of small pieces, comprising the following steps:
Commissioning device, the cutting parameter of setting laser scribing machine;
Accurate location, the vacuum suction that faced up by solar battery sheet is fixed on the right angle cuts platform of solar energy laser scribing means;
Setting cut lengths, be divided into by cutting track parallel bus bar to cut and vertical bus bar cutting, when arranging the cutting of parallel bus bar, cutting width is set as the integral multiple of one group of both positive and negative polarity bus bar width, when arranging the cutting of vertical bus bar, then according to product actual requirement setting cutting width;
Cutting, makes the depth of cut of every bar cutting track be less than the thickness of solar battery sheet;
Indicate both positive and negative polarity, draw the lines perpendicular to bus bar at the back side of solar battery sheet near perpendicular cuts track, these lines are obviously partial to the side of the small pieces cell piece of well cutting, to indicate the negative or positive electrode that this end is cell piece;
Break sheet, utilize and break disconnected by the solar battery sheet do not cut off completely by hand, obtain required solar battery sheet, breaking sheet direction is exert a force from the back side of solar battery sheet to front.
In said method, described depth of cut is 2/1 to three/3rds of solar battery sheet thickness.
In said method, indicate the step of both positive and negative polarity be positioned at cutting step after, break sheet step before.
The present invention adopts said method to cut solar battery sheet, not only effectively can promote yields and the utilization rate of solar battery sheet, the both positive and negative polarity mistaking solar battery sheet can also be avoided, for follow-up high-speed and high-efficiency high-quality make solar module reliable quality assurance be provided.
Accompanying drawing explanation
Fig. 1 is the structural representation of solar battery sheet in the embodiment of the present invention.
Fig. 2 is the structural representation of small pieces solar battery sheet after cutting in the embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Describe technical scheme of the present invention in detail below with reference to drawings and the specific embodiments, so as clearer, understand invention essence of the present invention intuitively.
The present embodiment provides a kind of cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising sheet, the all back-contact electrodes contact crystalline silicon solar cell comprising sheet 10 of the full wafer shown in Fig. 1 to be cut into the solar battery sheet 20 of the small pieces shown in Fig. 2, to make solar module further.This all back-contact electrodes contact crystalline silicon solar cell comprising sheet 10 front is photosurface and antireflection layer, the back side is provided with the bus bar 11 of dense arrangement, these bus bars 11 are in both positive and negative polarity cross arrangement, for collecting the electric energy that solar energy conversion produces by solar battery sheet 10, and conduction is collected on the both positive and negative polarity pad (not shown) at solar battery sheet 10 edge.
The present embodiment adopts laser scribing means to cut, and cuts from the front of solar battery sheet 10, and bus bar 11 can be protected not damaged.The cutting method of solar battery sheet 20 comprises the following steps:
First, commissioning device, namely debugs laser scribing means, and the cutting parameter of setting laser scribing machine comprises the focal length of laser beam, the frequency of laser beam, the parameters such as the electric current of Laser Power Devices.
Secondly, accurately locate, face up on the right angle cuts platform of the band vacuum suction being fixed on solar energy scribing machine by solar battery sheet 10, to ensure accuracy and the cutting accuracy of cutting position, the present embodiment adopts right angle positioning mode accurately to locate.
Then, setting cut lengths, namely set cutting track, and cutting track is divided into equality bus bar to cut and vertical bus bar cutting.When arranging parallel bus bar 10 cutting track, cutting width is set as the integral multiple of one group of both positive and negative polarity bus bar 11 width, even if the width of the every block cell piece 20 cut down is the integral multiple of one group of both positive and negative polarity bus bar 11 width, and the both positive and negative polarity bus bar 11 all containing identical group of number, and arrangement mode is identical.When arranging vertical bus bar 11 cutting track, cutting width sets according to the actual requirement of product, finally can obtain the cell piece 20 of dimension.
During cutting, make the depth of cut of every bar cutting track be less than the thickness of solar battery sheet 10, cause solar battery sheet 10 and solar battery sheet 20 to be scrapped in order to avoid high temperature punctures also short circuit the PN of solar battery sheet joint.In the present embodiment, depth of cut is chosen as 2/1 to three/3rds of the thickness of solar battery sheet 10, finds through actual tests, and the PN of solar battery sheet not only can be made to save not breakdown short circuit, and easily carries out follow-up breaking sheet operation.
After all cutting tracks all complete; the solar battery sheet 20 cutting into small pieces still connects together; at this moment; clearly can recognize the both positive and negative polarity of the bus bar 11 of each cell piece 20; due to solar battery sheet 20 symmetrically shape; in order to prevent from breaking the both positive and negative polarity of None-identified solar battery sheet 20 after sheet; the present embodiment is obviously on one side close at the back side of solar battery sheet 20; perpendicular cuts track draw one vertical or be basically perpendicular to the line 21 of bus bar 11, with this end of indicating solar battery slice 20 both positive and negative polarity.Such as, if the left side of solar battery sheet 10 is positive pole, the right is negative pole, the left side of then cutting the solar battery sheet 200 of formation is positive pole, and the right is negative pole, now, if what indicate is positive pole, then draw a line 21 near the cutting track place on the left side, if what will indicate is negative pole, then draw a line 21 at the cutting track place near the right.
After above-mentioned steps completes, just manually can break sheet, concrete grammar is, utilize manual the above-mentioned cell piece 200 do not cut off completely is carried out break disconnected, breaking sheet direction is exert a force from the back side of solar battery sheet 10 to front, makes bus bar 11 natural fracture under tension.Solar battery sheet 200 under breaking is required specification.
After the step of above-mentioned sign both positive and negative polarity is preferably positioned at cutting step, break sheet step before, this be due to, if before this step is positioned at cutting step, due to the particular location on solar battery sheet 20 of cutting track cannot be determined in advance, so cannot setting-out in advance.If after this step is positioned at and breaks sheet step, then after breaking sheet, the both positive and negative polarity of solar battery sheet 20 is easily mixed up and is confused, unless often broken a slice just draw a line 21 thereon, and this obviously can reduce and breaks sheet efficiency, also easily makes mistakes.
In sum, the present invention adopts said method to prepare solar battery sheet, not only effectively can promote the yields of cell piece, promote the production efficiency of solar battery sheet, the both positive and negative polarity mistaking cell piece can also be avoided, for follow-up high-speed and high-efficiency high-quality make solar module reliable guarantee be provided.
The foregoing is only the preferred embodiments of the present invention; not thereby its scope of the claims is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a cutting method for all back-contact electrodes contact crystalline silicon solar cell comprising sheet, for the solar battery sheet of full wafer is cut into small pieces, comprises the following steps:
Commissioning device, the cutting parameter of setting laser scribing machine;
Accurate location, the vacuum suction that faced up by solar panel is fixed on the right angle cuts platform of solar energy laser scribing means;
Setting cut lengths, be divided into by cutting track parallel bus bar to cut and vertical bus bar cutting, when arranging the cutting of parallel bus bar, cutting width is set as the integral multiple of one group of both positive and negative polarity bus bar width, when arranging the cutting of vertical bus bar, then according to product actual requirement setting cutting width;
Cutting, makes the depth of cut of every bar cutting track be less than the thickness of solar panel;
Indicate both positive and negative polarity, draw the lines perpendicular to bus bar at the back side of solar battery sheet near perpendicular cuts track, these lines are obviously partial to the side of the small pieces cell piece of well cutting, to indicate the negative or positive electrode that this end is cell piece;
Break sheet, utilize and break disconnected by the cell piece do not cut off completely by hand, obtain required cell piece, breaking sheet direction is exert a force from the back side of solar panel to front.
2. cutting method as claimed in claim 1, is characterized in that: described depth of cut is 2/1 to three/3rds of solar battery sheet thickness.
3. cutting method as claimed in claim 1, is characterized in that: after the step indicating both positive and negative polarity is positioned at cutting step, break sheet step before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510562866.6A CN105336812B (en) | 2015-09-08 | 2015-09-08 | The cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510562866.6A CN105336812B (en) | 2015-09-08 | 2015-09-08 | The cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105336812A true CN105336812A (en) | 2016-02-17 |
| CN105336812B CN105336812B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510562866.6A Active CN105336812B (en) | 2015-09-08 | 2015-09-08 | The cutting method of all back-contact electrodes contact crystalline silicon solar cell comprising piece |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552138A (en) * | 2016-02-23 | 2016-05-04 | 深圳市创益科技发展有限公司 | Electrode lead-out method for accurately processing back-contact solar cell to cell chip |
| CN109769161A (en) * | 2018-12-10 | 2019-05-17 | 苏州融硅新能源科技有限公司 | A kind of solar energy speaker and solar battery sheet cut installation method |
| CN110867498A (en) * | 2019-08-21 | 2020-03-06 | 晋能清洁能源科技股份公司 | Preparation method of sliced battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005236017A (en) * | 2004-02-19 | 2005-09-02 | Sharp Corp | Manufacturing method of solar cell |
| CN101281936A (en) * | 2008-04-24 | 2008-10-08 | 珈伟太阳能(武汉)有限公司 | Method for cutting pedion fingerlike staggered solar battery sheet |
| CN102544210A (en) * | 2011-12-30 | 2012-07-04 | 四川钟顺太阳能开发有限公司 | Cutting technology for back contact solar battery |
| US20120244656A1 (en) * | 2011-03-25 | 2012-09-27 | Samsung Electro-Mechanics Co., Ltd. | Method and apparatus for producing solar cell |
-
2015
- 2015-09-08 CN CN201510562866.6A patent/CN105336812B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005236017A (en) * | 2004-02-19 | 2005-09-02 | Sharp Corp | Manufacturing method of solar cell |
| CN101281936A (en) * | 2008-04-24 | 2008-10-08 | 珈伟太阳能(武汉)有限公司 | Method for cutting pedion fingerlike staggered solar battery sheet |
| US20120244656A1 (en) * | 2011-03-25 | 2012-09-27 | Samsung Electro-Mechanics Co., Ltd. | Method and apparatus for producing solar cell |
| CN102544210A (en) * | 2011-12-30 | 2012-07-04 | 四川钟顺太阳能开发有限公司 | Cutting technology for back contact solar battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552138A (en) * | 2016-02-23 | 2016-05-04 | 深圳市创益科技发展有限公司 | Electrode lead-out method for accurately processing back-contact solar cell to cell chip |
| CN109769161A (en) * | 2018-12-10 | 2019-05-17 | 苏州融硅新能源科技有限公司 | A kind of solar energy speaker and solar battery sheet cut installation method |
| CN110867498A (en) * | 2019-08-21 | 2020-03-06 | 晋能清洁能源科技股份公司 | Preparation method of sliced battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105336812B (en) | 2017-11-07 |
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