CN109346537A - Select emitter battery print register method - Google Patents
Select emitter battery print register method Download PDFInfo
- Publication number
- CN109346537A CN109346537A CN201811135963.7A CN201811135963A CN109346537A CN 109346537 A CN109346537 A CN 109346537A CN 201811135963 A CN201811135963 A CN 201811135963A CN 109346537 A CN109346537 A CN 109346537A
- Authority
- CN
- China
- Prior art keywords
- table top
- cell piece
- center
- center position
- photoactive substance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 14
- 238000007639 printing Methods 0.000 claims abstract description 13
- 238000012790 confirmation Methods 0.000 claims abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052710 silicon Inorganic materials 0.000 abstract description 7
- 239000010703 silicon Substances 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
Classifications
-
- 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic System
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/547—Monocrystalline silicon PV cells
Abstract
The present invention provides a kind of selection emitter battery print register method, it is related to the print field of crystal silicon solar batteries positive electricity grade, the selection emitter battery print register method are as follows: in posting a photoactive substance on table top, and taken pictures by camera and determine the position of the photoactive substance；One cell piece is sent to the table top by belt, one shading box of setting stops ambient light interference；The table top issues CCD light source, which claps around the cell piece, determines the center position of the cell piece；Printing equipment passes through cell piece center position on the center of the table top anchor point and the table top；Computer first passes through the offset of the center of the table top anchor point and the center position confirmation angle of the cell piece；Computer determines the area of the adjacent area between the cell piece and the photoactive substance；Calculate separately X-axis offset and Y-axis offset；Print head carries out alignment printing.
Description
Technical field
The present invention relates to the print fields of crystal silicon solar batteries positive electricity grade more particularly to solar cell selective to emit
Pole alignment methods.
Background technique
In current photovoltaic industry, the link for restricting conventional batteries transformation efficiency most importantly spreads and metallizes twice
Process, this two procedures are the conflicts to condition each other.
In diffusing procedure, low doping concentration can reduce the recombination probability of minority carrier, and can carry out preferable table
Face passivation, reduces the surface recombination probability of minority carrier, to reduce the reverse saturation current of battery, improves the open circuit of battery
Voltage and short circuit current.In addition because closer to the surface of solar cell, the probability that photo-generated carrier generates is higher, and closer to expansion
The collection rate of dissipating bind photo-generated carrier is higher, therefore shallow diffused junction can obtain high collection in the region of high carrier generation rate
Rate improves the short circuit current of battery.
Metallize process, and the front and back of battery needs to print silver paste and aluminium paste, to need high surface concentration to obtain
Good Ohmic contact, low surface dopant concentration make metal form high contact electricity with the contact portion of silicon when making electrode
Resistance, and diffusion region sheet resistance is larger, also increases the resistance to photo-generated carrier, to further increase solar-electricity
The series resistance in pond, reduces the fill factor of battery, finally makes the decrease in efficiency of battery.
Therefore, in traditional silicon solar cell, the concentration of diffusion will adapt to the requirement printed electrode, and usually require that diffusion
There is higher doping concentration, under higher doping concentration, silicon chip surface Carrier recombination rate is higher, can reduce short circuit current
Density, so that efficiency be made to decline.High-concentration dopant is used in electrode contact zone, uses low concentration doping in light absorption area.In reality
How the area for the area and electrode contact zone that the area of coordination electrode contact zone and grid line cover is covered with grid line in the production of border
The area of lid makes this area difference is smaller selective emitting stage (se) battery income will be made bigger, recent some manufacturers
Reach this purpose by promoting the precision of printing equipment, but a large amount of old equipment, without this function, transformation needs more
Big investment.
Summary of the invention
In view of this, providing a kind of exclusion external light source pair present invention aim to address above-mentioned the deficiencies in the prior art
The interference of silk screen one camera can accurately also measure the selection emitter battery print register side of the position of silicon wafer with one camera
Method.
The present invention solves technical solution used by above-mentioned the deficiencies in the prior art: a kind of selection emitter battery printing
Alignment methods, this method comprises:
Step (1): it in posting a photoactive substance on table top, and is taken pictures by camera and determines the position of the photoactive substance；
Step (2): one cell piece is sent to the table top by belt, one shading box of setting stops ambient light interference；
Step (3): the table top issues CCD light source, which claps around the cell piece, determines the center position of the cell piece；
Step (4): printing equipment passes through cell piece center position on the center of the table top anchor point and the table top；
Step (5): computer first passes through the center of the table top anchor point and the center position confirmation angle of the cell piece
Offset；
Step (6): computer determines the area of the adjacent area between the cell piece and the photoactive substance；
Step (7): X-axis offset and Y-axis offset are calculated separately；
Step (8): print head carries out alignment printing.
Compared to the prior art, selection emitter battery print register method of the invention is felt by being arranged on table top
Stimulative substance, and the center for passing through the table top anchor point calculates the offset of angle with cell piece center position on the table top,
And the area according to the adjacent area between cell piece and the photoactive substance, X-axis offset and Y-axis offset are calculated, is realized
Laser selective emitter (SE) alignment printing, finds mark point without high-precision camera and realizes positioning, do not have secondary printing function
The board of energy can also be superimposed selective emitter technology, improve the application range of new technology.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of present invention selection emitter battery print register method.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.It defines in the following description
Basic principle of the invention can be applied to other embodiments, deformation scheme, improvement project, equivalent program and do not carry on the back
Other technologies scheme from the spirit and scope of the present invention.
Referring to Fig. 1, the schematic diagram of one embodiment for invention selection emitter battery print register method, as schemed institute
Show, this method packet are as follows:
Step (1): it in posting a photoactive substance 2 on table top 1, and is taken pictures by camera and determines the position of the photoactive substance 2, i.e. X
Axis, Y-axis and Z axis；
Step (2): one cell piece 3 is sent to the table top by belt, one shading box of setting stops ambient light interference；
Step (3): the table top issues CCD light source, which claps around the cell piece 3, determines the center point of the cell piece 3
It sets；
Step (4): printing equipment passes through cell piece center point on the center (X, Y, Z) of the table top anchor point and the table top
Set (X1, Y1, Z1)；
Step (5): computer first passes through the center of the table top anchor point and the center position confirmation angle of the cell piece
Offset Z；
Step (6): computer determines the difference in areas 4 of the adjacent area between the cell piece and the photoactive substance, difference in areas 5, face
Product moment 6, difference in areas 7；
Step (7): calculating separately X-axis offset is (difference in areas 4- difference in areas 5)/160, and Y-axis offset is (difference in areas 6- area
It is poor 5)/160；
Step (8): print head carries out alignment printing.
In this present embodiment, shading box is set around the camera and excludes interference of the external light source to silk screen one camera, is used
One camera can accurately also measure the position of silicon wafer, so that screen printing apparatus be made to complete printing and re-expand area coincidence, reach
To the purpose for promoting battery conversion efficiency.
It should be understood by those skilled in the art that the embodiment of the present invention and attached drawing of foregoing description be only used as citing and simultaneously
Do not limit the present invention.The purpose of the present invention has been fully and effectively achieved.Function and structural principle of the invention is being implemented
It shows and illustrates in example, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (1)
1. a kind of selection emitter battery print register method, which is characterized in that this method comprises:
Step (1): it in posting a photoactive substance on table top, and is taken pictures by camera and determines the position of the photoactive substance；
Step (2): one cell piece is sent to the table top by belt, one shading box of setting stops the ambient light of the camera to be interfered；
Step (3): the table top issues CCD light source, which claps around the cell piece, determines the center position of the cell piece；
Step (4): printing equipment passes through cell piece center position on the center of the table top anchor point and the table top；
Step (5): computer first passes through the center of the table top anchor point and the center position confirmation angle of the cell piece
Offset；
Step (6): computer determines the area of the adjacent area between the cell piece and the photoactive substance；
Step (7): X-axis offset and Y-axis offset are calculated separately；
Step (8): print head carries out alignment printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811135963.7A CN109346537B (en) | 2018-09-28 | 2018-09-28 | Selective emitter cell printing alignment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811135963.7A CN109346537B (en) | 2018-09-28 | 2018-09-28 | Selective emitter cell printing alignment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109346537A true CN109346537A (en) | 2019-02-15 |
| CN109346537B CN109346537B (en) | 2020-10-20 |
Family
ID=65307038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811135963.7A Active CN109346537B (en) | 2018-09-28 | 2018-09-28 | Selective emitter cell printing alignment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109346537B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001242A (en) * | 2010-10-14 | 2011-04-06 | 吴江迈为技术有限公司 | Printing deviation measuring method, printing method and printing device for solar cell plate |
| CN102364301A (en) * | 2011-06-30 | 2012-02-29 | 常州天合光能有限公司 | Method for measuring alignment precision of meshed boards |
| CN106935683A (en) * | 2017-03-24 | 2017-07-07 | 广东工业大学 | A kind of solar battery sheet SPEED VISION positioning and correction system and its method |
| CN108257186A (en) * | 2018-01-18 | 2018-07-06 | 广州视源电子科技股份有限公司 | Determining method and device, video camera and the storage medium of uncalibrated image |
-
2018
- 2018-09-28 CN CN201811135963.7A patent/CN109346537B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001242A (en) * | 2010-10-14 | 2011-04-06 | 吴江迈为技术有限公司 | Printing deviation measuring method, printing method and printing device for solar cell plate |
| CN102364301A (en) * | 2011-06-30 | 2012-02-29 | 常州天合光能有限公司 | Method for measuring alignment precision of meshed boards |
| CN106935683A (en) * | 2017-03-24 | 2017-07-07 | 广东工业大学 | A kind of solar battery sheet SPEED VISION positioning and correction system and its method |
| CN108257186A (en) * | 2018-01-18 | 2018-07-06 | 广州视源电子科技股份有限公司 | Determining method and device, video camera and the storage medium of uncalibrated image |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109346537B (en) | 2020-10-20 |
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Address after: Room 101, building 1, 58 Xiangjiang Road, Yancheng Economic and Technological Development Zone, Yancheng City, Jiangsu Province 224000 Patentee after: Jiangsu Runyang New Energy Technology Co.,Ltd. Address before: 215300 20th floor, Dibao financial building, East Qianjin Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU RUNYANG PHOTOVOLTAIC TECHNOLOGY Co.,Ltd. |
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