CN102544220A - Manufacturing method of N-shaped solar battery silicon crystal circular battery sheet - Google Patents
Manufacturing method of N-shaped solar battery silicon crystal circular battery sheet Download PDFInfo
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- CN102544220A CN102544220A CN2012100190793A CN201210019079A CN102544220A CN 102544220 A CN102544220 A CN 102544220A CN 2012100190793 A CN2012100190793 A CN 2012100190793A CN 201210019079 A CN201210019079 A CN 201210019079A CN 102544220 A CN102544220 A CN 102544220A
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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
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Abstract
The invention discloses a manufacturing method of an N-shaped solar battery silicon crystal circular battery sheet, which comprises the steps of (1) conducting single crystal stretching on silicon crystals to manufacture a silicon rod, (2) removing two ends of the silicon rod and conducting rolling process on the silicon rod, (3) conducting slicing process on the silicon rod, and (4) conducting etching process on a silicon wafer after the slicing process. In the manufacturing method of the N-shaped solar battery silicon crystal circular battery sheet, after complete silicon rod two end removing process of the single crystal silicon rod is conducted, the rolling process is directly carried out, so that silicon material waste caused by cutting is avoided, manufacturing process of the solar battery silicon sheet is shortened after the cutting operation is avoided, and energy consumption in the cutting process is saved. Therefore, the manufacturing method of the N-shaped solar battery silicon crystal circular battery sheet can solve problems of silicon material waste and energy waste in the process for manufacturing solar battery silicon sheets in the prior art.
Description
Technical field
The present invention relates to solar module manufacturing technology field, particularly a kind of manufacturing approach of N type solar cell silicon crystal circular batteries sheet.
Background technology
Solar cell is a kind of assembly that the luminous energy of sunlight is converted into electric energy through the photoproduction effect.Solar cell can be thought a kind of semiconductor photo diode, and when solar irradiation was incident upon on the photodiode, photodiode will become electric energy to the luminous energy of the sun, produces electric current.When adopting series system or parallel way, a plurality of solar cells link up the solar cell array that just can consist of bigger power output.Solar cell is a kind of coming novel power supply, has permanent, spatter property and flexibility three big advantages.
The solar cell Development of Preparation Technology is to reduce the production cost of solar cell with improving its main target.The technological process of making monocrystalline solar cells at present is: 1 crystal pulling system rod, and using single crystal furnace equipment that polycrystal raw material is smelted to draw becomes single-wafer post silicon rod; 2 tails of decaptitating do not meet the silicon rod two ends part excision of cutting die size; 3 butts cut into silicon single crystal rod the silico briquette that meets square silicon chip; 4 is round as a ball, and silico briquette is fallen into circular arc for four jiaos; 5 cut into slices, and silico briquette are cut into the silico briquette of technology thickness requirement; 6 clean, and remove the silicon chip surface spot with chemical reagent and pure water; 7 cleaning and texturings are removed silicon chip surface with chemical reagent and pure water and are stain and process matte; 8 plated films cover one deck antireflection film layer on silicon chip; 9 silk screen printings are printed on silver-colored aluminium paste on the silicon chip through silk screen, a plurality of thin grid line that formation can collected current and two to three main grid lines; 10 oven dry, with the battery after the printing, through drying oven oven dry, make positive and negative (grid line) electrode of printing firm attached on the silicon chip; 11 testing, sortings use the solar energy analog meter that the battery performance index is tested, and by predetermined electric current, voltage, power or fill factor, curve factor scope class wrapping warehouse-in.
In the technological process of above-mentioned making monocrystalline solar cells, because section need be cut into square size, need the cylindrical of crystal bar be cut away, excise 1/5th weight of crystal bar approximately.So just, form the silicon material again and melt down use, not only caused the waste of silicon material, also wasted a large amount of water, electricity, vapour equal energy source the silicon rod of crystal pulling moulding having slatterned in vain again.
In sum, how to solve in the prior art and to make the silicon material waste that exists in the silicon chip of solar cell technology and the problem of energy waste, become those skilled in the art's problem demanding prompt solution.
Summary of the invention
The technical problem that the present invention will solve is that the technical problem that provides the present invention to solve is the manufacturing approach that a kind of N type solar cell silicon crystal circular batteries sheet is provided, and this method can realize solving in the prior art problem of making the silicon material waste that exists in the silicon chip of solar cell technology and energy waste.
For solving the problems of the technologies described above, the invention provides a kind of manufacturing approach of N type solar cell silicon crystal circular batteries sheet, comprise step:
1) silicon crystal is carried out the monocrystalline stretching and process silicon rod;
2) remove the two ends of said silicon rod, and said silicon rod is carried out round as a ball processing;
3) said silicon rod is carried out slicing treatment;
4) silicon chip after the slicing treatment is carried out etching processing.
Preferably, said step 3) specifically adopts the scroll saw cutting technique to cut into slices.
Preferably, said step 4) specifically comprises step:
41) silicon chip after the slicing treatment is cleaned;
42) silicon chip after will cleaning carries out etching processing;
43) silicon chip after the etching processing is carried out the slurry printing.
Preferably, said step 42) specifically adopt wet-etching technology.
The manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the present invention; Comprise: step 1) is carried out the monocrystalline stretching to silicon crystal and is processed silicon rod; It is a kind of technology that can polysilicon be handled formation monocrystalline silicon through drawing that monocrystalline stretches; And to monocrystalline silicon system rod processing formation silicon single crystal rod, thereby silicon single crystal rod can be applied in the subsequent production flow process of silicon chip of solar cell; Step 2) two ends of removal silicon rod; And silicon rod carried out round as a ball processing; Because the silicon rod two ends do not meet the requirement of cutting die size, remove at the two ends of the silicon single crystal rod after therefore needing to draw, and directly silicon single crystal rod is carried out round as a ball processing then; Make that the outer surface of silicon single crystal rod is smooth mellow and full, thereby optimize the structural behaviour (silicon chip of solar cell after the section has comparatively smooth silicon chip edge) of the silicon chip of solar cell after the section; Step 3) is carried out slicing treatment to silicon rod, according to the production requirement of solar module, the silicon single crystal rod after handling is cut into the silicon chip that meets thickness requirement; The silicon chip of step 4) after to slicing treatment carries out etching processing, and silicon chip is carried out etching processing, becomes the solar module finished product thereby be convenient to assembling.For the waste that reduces the silicon material and the consumption of the energy; In the manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the present invention; After silicon single crystal rod finishes the removal processing of silicon rod two ends, directly carry out round as a ball processing, so the silicon material waste that butt causes has not only been avoided in setting; And, practiced thrift the energy resource consumption in the butt operation having save the manufacturing process of having shortened silicon chip of solar cell after the butt operation.Therefore, the manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the invention can realize solving in the prior art problem of making the silicon material waste that exists in the silicon chip of solar cell technology and energy waste.
Description of drawings
Fig. 1 is the flow chart of a kind of manufacturing approach of N type solar cell silicon crystal circular batteries sheet in an embodiment of the present invention;
Fig. 2 is the flow chart of step 4 in an embodiment of the present invention.
Embodiment
Core of the present invention is the manufacturing approach that a kind of N type solar cell silicon crystal circular batteries sheet is provided, and this method can realize solving in the prior art problem of making the silicon material waste that exists in the silicon chip of solar cell technology and energy waste.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 1, Fig. 1 is the flow chart of a kind of manufacturing approach of N type solar cell silicon crystal circular batteries sheet in an embodiment of the present invention.
The manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the present invention; Comprise: step S1 crystal pulling system rod; Silicon crystal is carried out the monocrystalline stretching process silicon rod; It is a kind of technology that can polysilicon be passed through to draw processing formation monocrystalline silicon that monocrystalline stretches, and processing forms silicon single crystal rod to monocrystalline silicon system rod, thereby silicon single crystal rod can be applied in the subsequent production flow process of silicon chip of solar cell; Step S2 goes the round as a ball processing in two ends; Remove the two ends of silicon rod, and silicon rod is carried out round as a ball processing, because the silicon rod two ends do not meet the requirement of cutting die size; Remove at the two ends of the silicon single crystal rod after therefore needing to draw; Directly silicon single crystal rod is carried out round as a ball processing then, make that the outer surface of silicon single crystal rod is smooth mellow and full, thereby optimize the structural behaviour (silicon chip of solar cell after the section has comparatively smooth silicon chip edge) of the silicon chip of solar cell after the section; Step S3 slicing treatment is carried out slicing treatment to silicon rod, according to the production requirement of solar module, the silicon single crystal rod after handling is cut into the silicon chip that meets thickness requirement; Step S4 etching processing is carried out etching processing to the silicon chip after the slicing treatment, and silicon chip is carried out etching processing, becomes the solar module finished product thereby be convenient to assembling.For the waste that reduces the silicon material and the consumption of the energy; In the manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the present invention; After silicon single crystal rod finishes the removal processing of silicon rod two ends, directly carry out round as a ball processing, so the silicon material waste that butt causes has not only been avoided in setting; And, practiced thrift the energy resource consumption in the butt operation having save the manufacturing process of having shortened silicon chip of solar cell after the butt operation.Therefore, the manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the invention can realize solving in the prior art problem of making the silicon material waste that exists in the silicon chip of solar cell technology and energy waste.
Particularly; Step S3 adopts the scroll saw cutting technique; Scroll saw is a kind of a kind of saw that crisp and hard material is cut that a kind of utilization principle design that a rope can cut through a log is come out, because the silicon rod quality is more crisp, therefore adopts the scroll saw cutting can effectively guarantee the yield rate of silicon rod cutting.
Please refer to Fig. 2, Fig. 2 is the flow chart of step 4 in an embodiment of the present invention.
In the above-described embodiment; The concrete steps of step S4 comprise: step S41 silicon chip cleans; Silicon chip to after the slicing treatment cleans; Through using cleaning fluid or clear water that silicon chip is cleaned, carry out subsequent treatment thereby be convenient to silicon chip, avoided on the silicon chip remaining impurities to the influence of subsequent handling; Step S42 etching; Silicon chip after cleaning is carried out etching processing, and etching is a kind of technology of silicon chip surface being handled through chemically treated method, can rough structure be produced on the surface of silicon chip; Thereby increase the surface area of silicon chip, improve electricity conversion; The printing of step S43 slurry is carried out the slurry printing to the silicon chip after the etching processing, silver-colored aluminum slurry printed to silicon chip, thereby with the electric current output that produces on the silicon chip.
Particularly, step S42 adopts wet-etching technology.Wet etching is a kind of the etching material to be immersed in the technology of corroding in the corrosive liquid, is widely used in the photovoltaic industry.
More than the manufacturing approach of a kind of N type solar cell silicon crystal circular batteries sheet provided by the present invention has been carried out detailed introduction.Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of claim of the present invention.
Claims (4)
1. the manufacturing approach of a N type solar cell silicon crystal circular batteries sheet is characterized in that, comprises step:
1) silicon crystal is carried out the monocrystalline stretching and process silicon rod;
2) remove the two ends of said silicon rod, and said silicon rod is carried out round as a ball processing;
3) said silicon rod is carried out slicing treatment;
4) silicon chip after the slicing treatment is carried out etching processing.
2. according to the manufacturing approach of the said a kind of N type solar cell silicon crystal circular batteries sheet of claim 1, it is characterized in that said step 3) specifically adopts the scroll saw cutting technique to cut into slices.
3. according to the manufacturing approach of the said a kind of N type solar cell silicon crystal circular batteries sheet of claim 1, it is characterized in that said step 4) specifically comprises step:
41) silicon chip after the slicing treatment is cleaned;
42) silicon chip after will cleaning carries out etching processing;
43) silicon chip after the etching processing is carried out the slurry printing.
4. according to the manufacturing approach of the said a kind of N type solar cell silicon crystal circular batteries sheet of claim 3, it is characterized in that said step 42) specifically adopt wet-etching technology.
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| CN2012100190793A CN102544220A (en) | 2012-01-20 | 2012-01-20 | Manufacturing method of N-shaped solar battery silicon crystal circular battery sheet |
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| CN2012100190793A CN102544220A (en) | 2012-01-20 | 2012-01-20 | Manufacturing method of N-shaped solar battery silicon crystal circular battery sheet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829586A (en) * | 2017-10-27 | 2018-03-23 | 四川永祥硅材料有限公司 | A kind of crystalline silicon factory |
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| CN101447532A (en) * | 2008-12-22 | 2009-06-03 | 上海晶澳太阳能光伏科技有限公司 | Method for preparing crystalline silicon solar cell with passivation on double surfaces |
| CN201552682U (en) * | 2009-10-28 | 2010-08-18 | 上海日进机床有限公司 | Cutting mechanism for diamond wire guillotine |
| CN101851779A (en) * | 2010-06-04 | 2010-10-06 | 浙江芯能光伏科技有限公司 | Method for manufacturing monocrystalline silicon chip of solar cell |
| CN102244137A (en) * | 2010-05-14 | 2011-11-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Solar cell and manufacturing method thereof |
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- 2012-01-20 CN CN2012100190793A patent/CN102544220A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1938136A (en) * | 2004-03-30 | 2007-03-28 | 索拉克斯有限公司 | Method and apparatus for cutting ultra thin silicon wafers |
| CN101447532A (en) * | 2008-12-22 | 2009-06-03 | 上海晶澳太阳能光伏科技有限公司 | Method for preparing crystalline silicon solar cell with passivation on double surfaces |
| CN201552682U (en) * | 2009-10-28 | 2010-08-18 | 上海日进机床有限公司 | Cutting mechanism for diamond wire guillotine |
| CN102244137A (en) * | 2010-05-14 | 2011-11-16 | 北京北方微电子基地设备工艺研究中心有限责任公司 | Solar cell and manufacturing method thereof |
| CN101851779A (en) * | 2010-06-04 | 2010-10-06 | 浙江芯能光伏科技有限公司 | Method for manufacturing monocrystalline silicon chip of solar cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107829586A (en) * | 2017-10-27 | 2018-03-23 | 四川永祥硅材料有限公司 | A kind of crystalline silicon factory |
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Application publication date: 20120704 |