CN105280730A - Battery piece front grid line electrode structure and printing method thereof - Google Patents
Battery piece front grid line electrode structure and printing method thereof Download PDFInfo
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- CN105280730A CN105280730A CN201510302522.1A CN201510302522A CN105280730A CN 105280730 A CN105280730 A CN 105280730A CN 201510302522 A CN201510302522 A CN 201510302522A CN 105280730 A CN105280730 A CN 105280730A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000011800 void material Substances 0.000 claims description 32
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003466 welding 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
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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- Electrodes Of Semiconductors (AREA)
Abstract
The present invention discloses a battery piece front grid line electrode structure which belongs to the technical field solar batteries. The structure comprises a plurality of main grid electrodes (1) and a plurality of subsidiary grid electrodes (2) perpendicular to the main grid electrodes, and is characterized in that each main grid electrode (1) is divided into hollowed regions (11) and non-hollowed regions (12), the hollowed regions (11) and the non-hollowed regions (12) are arranged in a spaced manner, the area of the hollowed regions (11) occupy 30-50% of the whole main grid electrode, a tail section (13) of the main grid electrode is arrow-shaped, and a hollowed positioning window (3) is disposed at each region, close to the tail sections (13), of each of two outmost main grid electrodes, and is a square with side length ranging from 0.8 to 1 mm. meanwhile, a printing method for manufacturing the above battery piece front grid line electrode structure is also disclosed. With adoption of the structure and the method, production cost is effectively lowered, and photoelectric conversion efficiency of battery pieces is also raised.
Description
Technical field
The present invention relates to a kind of electrode structure of solar battery sheet, particularly relate to a kind of cell piece front gate line electrode structure and printing process thereof, belong to technical field of solar batteries.
Background technology
In the front gate line electrode of solar cell, the effect of secondary gate electrode collects photo-generated carrier, in order to reduce series resistance, its depth-width ratio is the bigger the better, and the effect of main gate line is mainly in order to components welding, do not bear the function of collected current, without the need to pursuing depth-width ratio.But in prior art, conventional front electrode grid line is once formed merely through one-step print operation, the width that main grid and pair are deleted is all wider, which adds the consumption of silver slurry, improves production cost.For this reason, people have carried out various trial, propose various solution.As being " CN201210269217.3 " in the patent No., name is called in the Chinese invention patent document of " front gate line electrode structure " and discloses a kind of front gate line electrode structure, comprise some the first secondary grid lines, crossing with the first secondary grid line and be at least the main gate line of two, it is characterized in that: it is characterized in that: described main gate line is divided into multistage and is connected by connecting line between section with section, first section of described main gate line is also provided with the 3rd secondary grid line with end section, the interior block of the 3rd described secondary grid line and corresponding first section or latter end overlap, revealed section is crossing with the first secondary grid line, the 3rd described secondary grid line is wider than the first secondary grid line.This front gate line electrode structure, by the segmentation structure of main gate line, is connected with connecting line between section with section, and the area of main gate line is reduced, and the slurry of printing reduces, thus production cost reduces; The function of contraposition printing is realized by the 3rd secondary grid line.But this design adds operation and the difficulty of production and processing, adds production cost to a certain extent.
Summary of the invention
To the present invention is directed in prior art in cell piece front gate line electrode production process, usage of sizing agent is large, the technical problem that the higher and photoelectric conversion efficiency of cost has much room for improvement, a kind of cell piece front gate line electrode structure and printing process thereof are provided, effectively reduce the consumption of slurry, reduce production cost, meanwhile, improve the photoelectric conversion efficiency of cell piece.
For this reason, the present invention adopts following technical scheme:
A kind of cell piece front gate line electrode structure, comprise a plurality of primary gate electrode (1), and the secondary gate electrode (2) that some vertical with primary gate electrode, it is characterized in that: described primary gate electrode (1) is divided into void region (11) and non-void region (12), void region (11) and non-void region (12) interval are arranged, the area of void region (11) occupies the 30-50% of whole primary gate electrode, the end section (13) of primary gate electrode is in arrowhead form, be positioned at outermost two primary gate electrode (1) respectively offer hollow out anchor window (3) in the region near end section (13), anchor window (3) is for side size range is at the square of 0.8-1mm.
Further, the width of described primary gate electrode (1) is 0.5-1.5mm.
Further, described secondary gate electrode (2) is ultra-fine intensive secondary gate electrode, and the width of secondary gate electrode is 10-30um, and spacing is 0.9-1.3mm
Further, described secondary gate electrode (2) is only provided with peripheral sideline in the direction vertical with primary gate electrode, and the direction parallel with primary gate electrode does not have peripheral sideline.
Meanwhile, the invention also discloses a kind of printing process preparing above-mentioned cell piece front gate line electrode structure, comprise the steps:
A, on cell piece, make a plurality of primary gate electrode (1) equally spacedly, two end sections (13) of each primary gate electrode are arrowhead form;
B, arrange anchor window (3) at outermost two primary gate electrode near the region of end section, described anchor window is the square of side size range at 0.8-1mm;
C, hollow out operation is carried out to primary gate electrode, primary gate electrode is made to be divided into void region (11) and non-void region (12), void region (11) and non-void region (12) interval are arranged, and the area of void region (11) occupies the 30-50% of whole primary gate electrode;
D, make secondary gate electrode (2), and rely on four anchor window (3) locating pair gate electrodes on outermost two primary gate electrode.
Further, the width of described primary gate electrode is 0.5-1.5mm.
Further, the width of described secondary gate electrode is 10-30um, and spacing is, is ultra-dense structure set.
Further, peripheral sideline is made in the direction that secondary gate electrode (2) is vertical with primary gate electrode (1).
The present invention has following beneficial effect:
1, save slurry, reduce production cost: primary gate electrode and pair are deleted electrode separation and made, and the proprietary slurry that the primary gate electrode not bearing collected current function can use price lower, reduces expense of raw materials; The hollow out design of primary gate electrode can save the use amount of slurry; Ultra-fine pair deletes electrode can save slurry use amount 30-40%, reduces the consuming cost 30-50% of silver slurry.
2, improve photoelectric conversion efficiency: ultra-fine grid line design improves the light-receiving area about 20% of cell piece, intensive grid line decreases the surface recombination of electronics when transmitting simultaneously, can improve the electric current 3%-5% of battery, and cell piece conversion efficiency improves about 4%.
Therefore, the present invention can reduce production cost effectively, meanwhile, improves the photoelectric conversion efficiency of cell piece.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A portion enlarged drawing of this Fig. 1;
In figure, 1 is primary gate electrode, and 11 is void region, and 12 is non-void region, and 13 is end section, and 2 is secondary gate electrode, and 3 is anchor window.
Embodiment
In order to make those skilled in the art person better understand the present invention program, carry out clear, complete description below in conjunction with accompanying drawing to technical scheme of the present invention, part same as the prior art in the present invention is with reference to prior art.
As shown in Figure 1-2, cell piece front gate line electrode structure of the present invention, comprises a plurality of primary gate electrode 1, in the present embodiment, primary gate electrode is four, and, some secondary gate electrodes 2 vertical with primary gate electrode 1, primary gate electrode 1 is divided into void region 11 and non-void region 12, void region 11 and interval, non-void region 12 are arranged, and wherein, the area of void region 11 occupies the 30-50% of whole primary gate electrode, each primary gate electrode has two end sections 13, and end section 13 is in arrowhead form.Be positioned at outermost two primary gate electrode respectively offer hollow out anchor window 3 in the region near end section 13, totally four anchor windows 3, anchor window 3 is the square of side size range at 0.8-1mm.
The width of described primary gate electrode 1 is 0.5-1.5mm.Secondary gate electrode 2 is ultra-fine intensive secondary gate electrode, and the width of secondary gate electrode is 10-30um, and spacing is 0.9-1.3mm.In the present embodiment, the one piece of cell piece being of a size of 156*156mm is provided with the secondary gate electrode of 120-160 root.
Wherein, secondary gate electrode 2 is only provided with peripheral sideline in the direction vertical with primary gate electrode 1, and the direction parallel with primary gate electrode does not have peripheral sideline.
The present invention also provides a kind of printing process preparing above-mentioned cell piece front gate line electrode structure on the other hand, comprises the steps:
A, on cell piece, make a plurality of primary gate electrode 1 equally spacedly, two end sections 13 of each primary gate electrode are arrowhead form, and in the present embodiment, primary gate electrode 1 is four, and the width of primary gate electrode is 0.5-1.5mm;
B, arrange anchor window 3 at outermost two primary gate electrode near the region of end section 13, anchor window is the square of side size range at 0.8-1mm;
C, carry out hollow out operation to primary gate electrode 1, make primary gate electrode be divided into void region 11 and non-void region 12, void region 11 and interval, non-void region 12 are arranged, and the area of void region 11 occupies the 30-50% of whole primary gate electrode;
D, make secondary gate electrode 2, and rely on four anchor window 3 locating pair gate electrodes on outermost two primary gate electrode, the width of secondary gate electrode is 10-30um, and spacing is 0.9-1.3mm, is ultra-dense structure set;
E, make peripheral sideline in the direction that secondary gate electrode 2 is vertical with primary gate electrode (1).
Obviously, described embodiment is only section Example of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Claims (8)
1. a cell piece front gate line electrode structure, comprise a plurality of primary gate electrode (1), and the secondary gate electrode (2) that some vertical with primary gate electrode, it is characterized in that: described primary gate electrode (1) is divided into void region (11) and non-void region (12), void region (11) and non-void region (12) interval are arranged, the area of void region (11) occupies the 30-50% of whole primary gate electrode, the end section (13) of primary gate electrode is in arrowhead form, be positioned at outermost two primary gate electrode (1) respectively offer hollow out anchor window (3) in the region near end section (13), anchor window (3) is for side size range is at the square of 0.8-1mm.
2. cell piece front gate line electrode structure according to claim 1, is characterized in that: the width of described primary gate electrode (1) is 0.5-1.5mm.
3. cell piece front gate line electrode structure according to claim 1, is characterized in that: described secondary gate electrode (2) is ultra-fine intensive secondary gate electrode, and the width of secondary gate electrode is 10-30um, and spacing is 0.9-1.3mm.
4. cell piece front gate line electrode structure according to claim 1, is characterized in that: described secondary gate electrode (2) is only provided with peripheral sideline in the direction vertical with primary gate electrode, and the direction parallel with primary gate electrode does not have peripheral sideline.
5. prepare a printing process for above-mentioned cell piece front gate line electrode structure, comprise the steps:
A, on cell piece, make a plurality of primary gate electrode (1) equally spacedly, two end sections (13) of each primary gate electrode are arrowhead form;
B, arrange anchor window (3) at outermost two primary gate electrode near the region of end section, described anchor window is the square of side size range at 0.8-1mm;
C, hollow out operation is carried out to primary gate electrode, primary gate electrode is made to be divided into void region (11) and non-void region (12), void region (11) and non-void region (12) interval are arranged, and the area of void region (11) occupies the 30-50% of whole primary gate electrode;
D, make secondary gate electrode (2), and rely on four anchor window (3) locating pair gate electrodes on outermost two primary gate electrode.
6. printing process according to claim 5, is characterized in that: the width of described primary gate electrode is 0.5-1.5mm.
7. printing process according to claim 5, is characterized in that: the width of described secondary gate electrode is 10-30um, and spacing is 0.9-1.3mm, is ultra-dense structure set.
8. printing process according to claim 5, is characterized in that: the direction vertical with primary gate electrode (1) at secondary gate electrode (2) makes peripheral sideline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302522.1A CN105280730A (en) | 2015-06-05 | 2015-06-05 | Battery piece front grid line electrode structure and printing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510302522.1A CN105280730A (en) | 2015-06-05 | 2015-06-05 | Battery piece front grid line electrode structure and printing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105280730A true CN105280730A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510302522.1A Pending CN105280730A (en) | 2015-06-05 | 2015-06-05 | Battery piece front grid line electrode structure and printing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055589A (en) * | 2019-12-23 | 2020-04-24 | 晋能光伏技术有限责任公司 | Solar cell printing screen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202839626U (en) * | 2012-07-25 | 2013-03-27 | 浙江贝盛光伏股份有限公司 | Grid lines of solar cell slice |
| CN203055923U (en) * | 2012-11-28 | 2013-07-10 | 山东力诺太阳能电力股份有限公司 | Solar cell front face grid line and solar cell sheet printed with same |
| CN204315585U (en) * | 2015-01-05 | 2015-05-06 | 无锡德鑫太阳能电力有限公司 | A kind of solar battery sheet with anti-breaking gate electrode structure |
| CN204632770U (en) * | 2015-06-05 | 2015-09-09 | 常州天合光能有限公司 | A kind of cell piece front gate line electrode structure |
-
2015
- 2015-06-05 CN CN201510302522.1A patent/CN105280730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202839626U (en) * | 2012-07-25 | 2013-03-27 | 浙江贝盛光伏股份有限公司 | Grid lines of solar cell slice |
| CN203055923U (en) * | 2012-11-28 | 2013-07-10 | 山东力诺太阳能电力股份有限公司 | Solar cell front face grid line and solar cell sheet printed with same |
| CN204315585U (en) * | 2015-01-05 | 2015-05-06 | 无锡德鑫太阳能电力有限公司 | A kind of solar battery sheet with anti-breaking gate electrode structure |
| CN204632770U (en) * | 2015-06-05 | 2015-09-09 | 常州天合光能有限公司 | A kind of cell piece front gate line electrode structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111055589A (en) * | 2019-12-23 | 2020-04-24 | 晋能光伏技术有限责任公司 | Solar cell printing screen |
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Application publication date: 20160127 |