CN111477698A - Electrode preparation method of IBC solar cell - Google Patents
Electrode preparation method of IBC solar cell Download PDFInfo
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- CN111477698A CN111477698A CN201911006862.4A CN201911006862A CN111477698A CN 111477698 A CN111477698 A CN 111477698A CN 201911006862 A CN201911006862 A CN 201911006862A CN 111477698 A CN111477698 A CN 111477698A
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- solar cell
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- ibc solar
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 238000004080 punching Methods 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 1
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 1
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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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
- H01L31/02—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
-
- 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
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
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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
- 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
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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)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention aims to disclose a preparation method of an electrode of an IBC solar cell, which comprises the following steps: s1, manufacturing the battery piece by laser drilling; s2, printing positive electrode main grid lines and fine grid lines on the battery piece after laser punching; s3, printing the insulating slurry, and isolating the part needing to be insulated by the insulating slurry; s4, printing a negative electrode main grid line and a thin grid line, wherein the printed thin grid line is overlapped with the thin grid line pattern printed in the step S2, and manufacturing an electrode of the IBC solar cell is completed; compared with the prior art, laser drilling can be integrated into the previous laser grooving process, the rest is printed for only 3 times, the advantages of double printing are kept, printing steps are reduced, the manufacturing difficulty of the IBC solar cell is lowered, the production cost of the IBC solar cell is lowered, the conversion efficiency of the IBC solar cell is improved, and the purpose of the invention is achieved.
Description
Technical Field
The invention relates to a method for preparing an electrode of a solar cell, in particular to a method for preparing an electrode of an IBC solar cell.
Background
Solar energy is a clean, efficient and never-failing new energy source, and is one of important renewable energy sources. With the development of the solar energy industry, more customers and solar cell manufacturers pay more and more attention to the efficiency of the solar cell.
In recent years, a lot of research on IBC solar cells has been conducted at home and abroad, and results show that: the IBC solar cell has the potential of replacing the current PERC in the future, can obviously improve the conversion efficiency of the cell, and is particularly suitable for roof use and the like.
The traditional electrode manufacturing process of the IBC solar cell is very complicated, needs 5 times of printing, is not only complicated but also high in production cost, and is not beneficial to batch production of the IBC cell.
Therefore, there is a need for a method for preparing an electrode of an IBC solar cell, which solves the above existing problems.
Disclosure of Invention
The invention aims to provide a method for preparing an electrode of an IBC solar cell, aiming at the defects of the prior art, reducing printing steps, reducing the manufacturing difficulty of the IBC cell, simultaneously keeping the advantages of double printing, reducing the production cost of the IBC cell and improving the conversion efficiency of the IBC cell.
The technical problem solved by the invention can be realized by adopting the following technical scheme:
a preparation method of an electrode of an IBC solar cell is characterized by comprising the following steps:
s1, manufacturing the battery piece by laser drilling;
s2, printing positive electrode main grid lines and fine grid lines on the battery piece after laser punching;
s3, printing the insulating slurry, and isolating the part needing to be insulated by the insulating slurry;
and S4, printing the negative electrode main grid line and the thin grid line, wherein the printed thin grid line is overlapped with the thin grid line pattern printed in the step S2, and the electrode manufacturing of the IBC solar cell is completed.
In an embodiment of the present invention, the laser drilling may be performed separately, or may be performed in a laser grooving process of a previous process.
In one embodiment of the present invention, the laser-drilled shapes include, but are not limited to, dots, rectangles, and squares.
In one embodiment of the present invention, the printing order of the positive electrode bus bars and the negative electrode bus bars may be interchangeably adjusted.
In an embodiment of the present invention, the line width of the thin gate line pattern printed in step S2 and the line width of the thin gate line pattern printed in step S4 are consistent or inconsistent, and there is no difference except for differences in line width.
In one embodiment of the invention, the insulating paste is printed between the positive electrode main grid line and the negative electrode main grid line, so that the circuit disconnection between part of the thin grid lines and the positive electrode main grid line and the circuit disconnection between part of the thin grid lines and the negative electrode main grid line are realized.
In one embodiment of the present invention, the printed pattern of the insulating paste includes, but is not limited to, a rectangle, a square, and an oval dot shape.
Compared with the prior art, the electrode preparation method of the IBC solar cell has the advantages that laser drilling can be integrated into a previous laser grooving process, the rest is printed for 3 times, the advantage of double printing is kept, printing steps are reduced, the manufacturing difficulty of the IBC cell is reduced, the production cost of the IBC solar cell is reduced, the conversion efficiency of the IBC solar cell is improved, and the purpose of the invention is realized.
The features of the present invention will be apparent from the accompanying drawings and from the detailed description of the preferred embodiments which follows.
Drawings
FIG. 1 is a schematic flow diagram of a conventional electrode fabrication method for an IBC solar cell;
FIG. 2 is a schematic flow chart of the method of fabricating an electrode for an IBC solar cell in accordance with the present invention;
fig. 3 is a schematic structural diagram of an electrode of an IBC solar cell according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
As shown in fig. 1 to 3, the method for preparing an electrode of an IBC solar cell according to the present invention includes the following steps:
s1, manufacturing the battery piece by laser drilling 1;
s2, printing a positive electrode main grid line 2 and a fine grid line 5 on the battery piece after the laser drilling 1;
s3, printing the insulating paste 4, and isolating the part needing insulation by using the insulating paste 4;
and S4, printing the negative electrode main grid lines 3 and the thin grid lines 5, wherein the printed thin grid lines 5 are overlapped with the patterns of the thin grid lines 5 printed in the step S2, and the electrode manufacturing of the IBC solar cell is completed.
In this embodiment, the laser drilling 1 may be produced separately or in a laser grooving step in a preceding step, and preferably in a laser grooving step integrated in the preceding step.
In the present embodiment, the laser-drilled shapes include, but are not limited to, dot shapes, rectangles, and squares, and the preferred values are dot shapes.
In the present embodiment, the printing order of the positive electrode bus bar 2 and the negative electrode bus bar 3 can be adjusted interchangeably; the line width of the thin gate line pattern printed in the step S2 is identical to or different from the line width of the thin gate line pattern printed in the step S4, and there is no difference except for the line width difference.
In the present embodiment, the insulating paste 4 is printed between the positive electrode main gate line 2 and the negative electrode main gate line 3, so that a part of the thin gate lines is disconnected from the positive electrode main gate line, a part of the thin gate lines, and a part of the negative electrode main gate line.
In the present embodiment, the printed pattern of the insulating paste 4 includes, but is not limited to, a rectangle, a square, and an oval dot shape.
According to the electrode preparation method of the IBC solar cell, due to the fact that laser drilling and 3 times of printing are needed, printing steps are reduced, the manufacturing difficulty of the IBC solar cell is reduced, the advantages of double printing are kept, the production cost of the IBC solar cell is reduced, the conversion efficiency of the IBC solar cell is improved, the laser drilling process is a non-printing process and can be combined with a laser grooving process of the previous process, and the number of manufacturing processes of the IBC solar cell is reduced; the battery piece after laser drilling, carry out the printing of positive electrode main grid line and thin grid line for the first time, then the printing of insulating thick liquids, the part that will need insulating adopts insulating thick liquids to completely cut off, then carry out the printing of negative electrode main grid line and thin grid line, thin grid line and the thin grid line figure coincidence of printing for the first time this moment, realize the stack of thin grid line height, the increase of thin grid line height can reduce the broken string risk of the thin grid line printing of the first time of battery, the conversion efficiency of battery is improved, just accomplished the electrode printing of IBC solar cell after these steps, the step is simple easily operated, and all there is the promotion to battery efficiency and qualification rate.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (7)
1. A preparation method of an electrode of an IBC solar cell is characterized by comprising the following steps:
s1, manufacturing the battery piece by laser drilling;
s2, printing positive electrode main grid lines and fine grid lines on the battery piece after laser punching;
s3, printing the insulating slurry, and isolating the part needing to be insulated by the insulating slurry;
and S4, printing the negative electrode main grid line and the thin grid line, wherein the printed thin grid line is overlapped with the thin grid line pattern printed in the step S2, and the electrode manufacturing of the IBC solar cell is completed.
2. The method of claim 1, wherein the laser drilling is performed separately or in a laser grooving step of a previous step.
3. The method of preparing an electrode for an IBC solar cell of claim 1, wherein the laser-drilled shapes include, but are not limited to, dots, rectangles, and squares.
4. The method of preparing an electrode for an IBC solar cell of claim 1, wherein the printing order of the positive electrode busbar and the negative electrode busbar is interchangeably adjustable.
5. The method for preparing an electrode of an IBC solar cell according to claim 1, wherein the grid line width of the thin grid line pattern printed in the step S2 is identical to or different from the grid line width of the thin grid line pattern printed in the step S4.
6. The method of preparing an electrode for an IBC solar cell of claim 1, wherein the insulating paste is printed in between the positive electrode busbar and the negative electrode busbar.
7. The method of preparing an electrode for an IBC solar cell according to claim 1, wherein the printed pattern of the insulating paste includes, but is not limited to, rectangular, square, and oval dot shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911006862.4A CN111477698A (en) | 2019-10-22 | 2019-10-22 | Electrode preparation method of IBC solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911006862.4A CN111477698A (en) | 2019-10-22 | 2019-10-22 | Electrode preparation method of IBC solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111477698A true CN111477698A (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911006862.4A Pending CN111477698A (en) | 2019-10-22 | 2019-10-22 | Electrode preparation method of IBC solar cell |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110126906A1 (en) * | 2009-12-01 | 2011-06-02 | Samsung Electronics Co., Ltd. | Solar cell and method of manufacturing the same |
| CN202363468U (en) * | 2011-12-08 | 2012-08-01 | 常州天合光能有限公司 | Hetero-junction solar battery with point contact back emitting electrode |
| CN106575679A (en) * | 2014-09-30 | 2017-04-19 | 信越化学工业株式会社 | Solar cell and method for manufacturing same |
| CN106952971A (en) * | 2017-01-22 | 2017-07-14 | 泰州乐叶光伏科技有限公司 | IBC battery electrode forming methods based on silk-screen printing |
| CN107799616A (en) * | 2017-11-15 | 2018-03-13 | 南通苏民新能源科技有限公司 | A kind of interdigital back contact solar cell piece and preparation method thereof |
-
2019
- 2019-10-22 CN CN201911006862.4A patent/CN111477698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110126906A1 (en) * | 2009-12-01 | 2011-06-02 | Samsung Electronics Co., Ltd. | Solar cell and method of manufacturing the same |
| CN202363468U (en) * | 2011-12-08 | 2012-08-01 | 常州天合光能有限公司 | Hetero-junction solar battery with point contact back emitting electrode |
| CN106575679A (en) * | 2014-09-30 | 2017-04-19 | 信越化学工业株式会社 | Solar cell and method for manufacturing same |
| CN106952971A (en) * | 2017-01-22 | 2017-07-14 | 泰州乐叶光伏科技有限公司 | IBC battery electrode forming methods based on silk-screen printing |
| CN107799616A (en) * | 2017-11-15 | 2018-03-13 | 南通苏民新能源科技有限公司 | A kind of interdigital back contact solar cell piece and preparation method thereof |
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Application publication date: 20200731 |
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