CN103413857B - The front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series synchronous manufacture method - Google Patents
The front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series synchronous manufacture method Download PDFInfo
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- CN103413857B CN103413857B CN201310183779.0A CN201310183779A CN103413857B CN 103413857 B CN103413857 B CN 103413857B CN 201310183779 A CN201310183779 A CN 201310183779A CN 103413857 B CN103413857 B CN 103413857B
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- solar cell
- stopper slot
- bus bars
- metal bus
- back surface
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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
Abstract
The front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series a synchronous manufacture method, belong to solar cell device preparation field; The steps include: 1) conductive metal layer of solar cell back surface adopts the preparation of low-temperature silver slurry sintering, limited location groove I and stopper slot II in specimen holder, wherein stopper slot I size and solar cell and back surface metallic plate thereof match, and the width of stopper slot II mates with metal bus bars; Back metal plate and metal bus bars thereof are placed on stopper slot I and stopper slot II respectively; (2) solar cell piece uses vacuum cup to overturn, and is again put into stopper slot, and back surface contacts with metallic plate, and front surface upward; Use low-temperature silver slurry printing main gate line and thin grid line, metal bus bars has been broken upward, and connected battery is placed on the right; Metal bus bars is pressed in the main gate line of the right solar cell; The present invention significantly shorten the production time, improves production efficiency.
Description
Technical field
The front electrode and the cell piece that the present invention relates to a kind of silicon/crystalline silicon heterojunction solar cell are connected in series synchronous manufacture method.
Background technology
Solar cell power generation is one of the most promising current renewable energy utilization mode.Wherein crystal-silicon solar cell is due to its aboundresources, the leading position of technical maturity advantages of higher occuping market.In all kinds of new and effective crystal-silicon solar cell developed at present, crystal silicon heterojunction solar battery is subject to the extensive concern of industry with advantages such as its high conversion efficiency, suitable scale of mass production.
Crystal silicon heterojunction solar battery is a class based on the solar cell of amorphous silicon or microcrystal silicon emitter, and they can not tolerate the temperature of more than 300 DEG C, low-temperature silver need be adopted to starch silk screen printing and at lower than the temperature of 300 DEG C gate electrode line before sintering preparation.Up to the present, the connection between various crystal-silicon solar cell front surface electrode grid line making and battery is two independent processing steps.This makes manufacture of solar cells complex process, and then have impact on production efficiency, improves production cost.
Summary of the invention
The object of the present invention is to provide a kind of front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece to be connected in series synchronous manufacture method, it has the advantage simplifying the technological process of production and enhance productivity.
The present invention is achieved like this, and uses low-temperature silver slurry to realize front surface electrode sintering, and synchronously realizes the sintering that is connected in series between cell piece; First, the conductive metal layer of solar cell back surface adopts aforesaid low-temperature silver to starch sintering preparation, and cover whole surface, this step is the technique of standard.Specimen holder has two class stopper slots, is stopper slot I and stopper slot II, and wherein stopper slot I size and solar cell and back surface metallic plate thereof match, and the width of stopper slot II mates with metal bus bars; Back surface metallic plate and metal bus bars thereof are placed on stopper slot I and stopper slot II respectively, and the position that metal bus bars contacts with solar cell piece, before putting on stopper slot, covers with tin or low-temperature silver slurry;
Then, solar cell piece uses vacuum cup to overturn, and is again put into stopper slot.Back surface contacts with metallic plate, and front surface upward.Use low-temperature silver slurry printing main gate line and grid line, metal bus bars has been broken upward, and connected battery is placed on the right.Then metal bus bars is pressed in the main gate line of the right solar cell.The metal bus bars that the back contacts of rightmost solar cell connects uses as connecing external circuit lead-in wire.Leftmost solar cell bonding ribbon in its main gate line is used as another contact lead-wire connected with external circuit.This series of structure can a step sinter.Low-temperature sintering silver slurry and bonding battery solder sintering temperature required in the higher person determine sintering temperature.
Technique effect of the present invention is: the present invention adopts the novel solar cell card-house structure of design, adopt low-temperature pulp as silicon/crystalline silicon heterojunction solar cell conduction grid line, solar cell battery front surface metal electrode is made to carry out with employing conductive collecting bar multistep sintering process that cell piece is connected in series to be reduced to a step to complete simultaneously, significantly shorten the production time, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is specimen holder structure vertical view of the present invention.
Fig. 2 is specimen holder structure upward view of the present invention.
Fig. 3 is the structural representation of the present invention when printing main gate line and grid line.
Fig. 4 is the structural representation of the present invention when metal bus bars has been broken.
Fig. 5 is the structural representation of metal bus bars of the present invention when overlapping two solar cells.
In the drawings, 1, solar cell 2, main gate line 3, grid line 4, stopper slot I 5, stopper slot II 6, back surface metallic plate 7, metal bus bars.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is elaborated;
The silicon/crystalline silicon heterojunction solar cell prepared for N-type Cz monocrystalline silicon:
First, the conductive metal layer of solar cell back surface adopts aforesaid low-temperature silver to starch sintering preparation, covers whole surface.This step is the technique of standard, as depicted in figs. 1 and 2, specimen holder has two class stopper slots to specimen holder, is stopper slot I 4 and stopper slot II 5, wherein stopper slot I 4 size and solar cell 1 and back surface metallic plate 6 thereof match, and the width of stopper slot II 5 mates with metal bus bars 7; Back surface metallic plate 6 and metal bus bars 7 thereof are placed on stopper slot I 4 and stopper slot II 5 respectively, and the position that metal bus bars 7 contacts with solar cell piece, before putting on stopper slot, covers with tin or low-temperature silver slurry;
Then, solar cell piece uses vacuum cup to overturn, and is again put into stopper slot, and back surface contacts with metallic plate, and front surface upward; Use low-temperature silver slurry printing main gate line 2 and grid line 3, as shown in Figure 3; Metal bus bars 7 has been broken upward, and as shown in Figure 4, connected battery is placed on the right.Then metal bus bars 7 is pressed in the main gate line 2 of the right solar cell 1, as shown in Figure 5;
The metal bus bars 7 that the back contacts of rightmost solar cell 1 connects uses as connecing external circuit lead-in wire.Leftmost solar cell 1 bonding ribbon in its main gate line 2 is used as another contact lead-wire connected with external circuit.This series of structure is incubated 10 minutes at 200 DEG C, and a step has sintered.Compared with the processing step that three steps sintered with the connection in the front surface grid line printing-sintering of routine, busbar and the solar cell piece back side and front are independent, the present embodiment saves two-step process step, at least saves 1 hour process time.
Claims (1)
1. the front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series a synchronous manufacture method, it is characterized in that said method comprising the steps of:
(1) first, the conductive metal layer of solar cell back surface adopts the preparation of low-temperature silver slurry sintering, cover whole surface, specimen holder has two class stopper slots, for stopper slot I and stopper slot II, wherein stopper slot I size and solar cell and back surface metallic plate thereof match, and the width of stopper slot II mates with metal bus bars; Back metal plate and metal bus bars thereof are placed on stopper slot I and stopper slot II respectively, and the position that metal bus bars contacts with solar cell piece, before putting on stopper slot, covers with tin or low-temperature silver slurry;
(2) then, solar cell piece uses vacuum cup to overturn, and is again put into stopper slot, and back surface contacts with metallic plate, and front surface upward; Use low-temperature silver slurry printing main gate line and grid line, metal bus bars has been broken upward, and connected battery is placed on the right; Then metal bus bars is pressed in the main gate line of the right solar cell; The metal bus bars that the back contacts of such rightmost solar cell connects uses as connecing external circuit lead-in wire, leftmost battery bonding ribbon in its main gate line is used as another contact lead-wire connected with external circuit, then this series structure is incubated 10 minutes at 200 DEG C, a step has sintered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183779.0A CN103413857B (en) | 2013-05-17 | 2013-05-17 | The front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series synchronous manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310183779.0A CN103413857B (en) | 2013-05-17 | 2013-05-17 | The front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series synchronous manufacture method |
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| Publication Number | Publication Date |
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| CN103413857A CN103413857A (en) | 2013-11-27 |
| CN103413857B true CN103413857B (en) | 2015-10-28 |
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| CN201310183779.0A Expired - Fee Related CN103413857B (en) | 2013-05-17 | 2013-05-17 | The front electrode of silicon/crystalline silicon heterojunction solar cell and cell piece are connected in series synchronous manufacture method |
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| CN111834470A (en) * | 2019-03-26 | 2020-10-27 | 福建金石能源有限公司 | Cross-mesh electrical contact back contact heterojunction battery and assembly manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459183A (en) * | 2007-12-10 | 2009-06-17 | 泰瑞太阳能国际有限公司 | Photovoltaic devices having conductive paths formed through the active photo absorber |
| CN102422420A (en) * | 2009-05-14 | 2012-04-18 | 肖特太阳能股份公司 | Device for producing a photovoltaic thin-film module |
| CN202231044U (en) * | 2011-08-30 | 2012-05-23 | 宜都市鑫鸿华太阳能有限公司 | Adjustable tandem connection template for solar cells |
| CN202839629U (en) * | 2012-10-19 | 2013-03-27 | 浙江昱辉阳光能源江苏有限公司 | Solar cell |
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2013
- 2013-05-17 CN CN201310183779.0A patent/CN103413857B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459183A (en) * | 2007-12-10 | 2009-06-17 | 泰瑞太阳能国际有限公司 | Photovoltaic devices having conductive paths formed through the active photo absorber |
| CN102422420A (en) * | 2009-05-14 | 2012-04-18 | 肖特太阳能股份公司 | Device for producing a photovoltaic thin-film module |
| CN202231044U (en) * | 2011-08-30 | 2012-05-23 | 宜都市鑫鸿华太阳能有限公司 | Adjustable tandem connection template for solar cells |
| CN202839629U (en) * | 2012-10-19 | 2013-03-27 | 浙江昱辉阳光能源江苏有限公司 | Solar cell |
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Granted publication date: 20151028 Termination date: 20160517 |