CN102130194B - High-transmission-rate low-shading-area solar cell - Google Patents
High-transmission-rate low-shading-area solar cell Download PDFInfo
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- CN102130194B CN102130194B CN 201010620839 CN201010620839A CN102130194B CN 102130194 B CN102130194 B CN 102130194B CN 201010620839 CN201010620839 CN 201010620839 CN 201010620839 A CN201010620839 A CN 201010620839A CN 102130194 B CN102130194 B CN 102130194B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052710 silicon Inorganic materials 0.000 abstract description 5
- 239000010703 silicon Substances 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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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Abstract
The invention relates to a high-transmission-rate low-shading-area solar cell. A positive electrode of the solar cell comprises a fine grid line and a main grid line, wherein the fine grid line comprises regular hexagonal grid lines and incomplete hexagonal grid lines, and all the regular hexagonal grid lines and incomplete hexagonal grid lines are connected with each other. Scheme 1: the line width of each regular hexagonal grid line is 75um, the length of side is 2.76mm, the center distance is 4.78mm, and the quantity of the main grid lines arranged on the positive electrode is two. Scheme 2: the line width of each regular hexagonal grid line is 75um, the length of side is 3.5mm, the center distance is 6mm, and the quantity of the main grid lines arranged on the positive electrode is three. The invention enhances the electronic transmission, reduces the shading area of the grid lines, and ultimately improves the photoelectric transformation efficiency of the silicon solar cell.
Description
Technical field
The present invention relates to the solar battery sheet of the low shading-area of a kind of high transmission rates.
Background technology
At present, the crystal silicon solar energy battery industrialization technology is very ripe, yet compares with conventional energy resource, and relatively high cost has restricted its development with lower efficient, and for how to reduce cost and improve conversion efficiency, people have carried out a large amount of research.
In affecting the factor of efficient, grid line is one of them key factor.The grid line design on silicon solar surface is in order to collect to greatest extent photoelectric current, and reduces as much as possible series resistance, and this just means that grid line should be more close more thick better, yet this must reduce the light-receiving area of silion cell.Therefore the design of grid line should be the compromise between light-receiving area and collection photoelectric current and the reduction series resistance.Although there is now the very high and very narrow sectional area by grid line is done to reduce series resistance, increased like this use amount of slurry, increase manufacturing cost.
Summary of the invention
The technical problem to be solved in the present invention is: for overcoming the problems referred to above, the invention provides a kind of change grid line shape, do not change the grid line printing quality, the solar battery sheet of the low shading-area of the high transmission rates of effectively controlling cost.
The technical solution adopted for the present invention to solve the technical problems is: the solar battery sheet of the low shading-area of a kind of high transmission rates, the positive electrode of solar battery sheet comprises thin grid line and main grid line, thin grid line is comprised of regular hexagon grid line and imperfect hexagon grid line, and all regular hexagon grid lines and imperfect hexagon grid line are connected with each other.
Scheme one: the live width of described regular hexagon grid line is 75um, and the length of side is 2.76mm, and centre distance is 4.78mm, and the quantity that described positive electrode arranges the main grid line is two, and the width of main grid line is 1.8mm, and the spacing between two main grid lines is 84mm.Two main grid lines can effectively reduce shading-area, and the thin grid line that is formed by regular hexagon grid line and imperfect hexagon grid line collected current effectively.
Scheme two: the live width of described regular hexagon grid line is 75um, and the length of side is 3.5mm, and centre distance is 6mm, and the quantity that described positive electrode arranges the main grid line is three, and the main grid line width is 1.8mm, and the main grid line-spacing solar battery sheet edge at edge is 25.5mm.Along with the increase of the regular hexagon grid line length of side, its loss to sheet resistance can reduce, but also corresponding increase of shading-area.
The invention has the beneficial effects as follows: the present invention improves design to existing solar battery sheet positive electrode, change the shape of thin grid line, the thin grid line that is formed by regular hexagon grid line and imperfect hexagon grid line, all regular hexagon grid lines and imperfect hexagon grid line are connected with each other, can be drawn by topology theory, the present invention can realize the fast transport of electronics.The present invention not only increases the transmission of electronics, reduces the shading-area of grid line, and has finally promoted the photoelectric conversion efficiency of silicon solar cell.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the grid line printing screen plate schematic diagram of embodiments of the invention one;
Fig. 2 is the grid line printing screen plate schematic diagram of embodiments of the invention two;
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Calculate by existing solar battery sheet is carried out theory, use the method test of photoelectron life-span W-2000 and verify, can resolve the regularity of distribution of the minority carrier life time that obtains the cell piece surface fully, find that few son has been fallen into oblivion because not being in time.
Shown in Figure 2 such as Fig. 1, the solar battery sheet of the low shading-area of a kind of high transmission rates, the positive electrode of solar battery sheet comprises thin grid line and main grid line, and thin grid line is comprised of regular hexagon grid line and imperfect hexagon grid line, and all regular hexagon grid lines and imperfect hexagon grid line are connected with each other.
As shown in Figure 1, embodiment one: the live width of regular hexagon grid line is 75um, and the length of side is 2.76mm, and centre distance is 4.78mm, and the quantity that positive electrode arranges the main grid line is two, and the width of main grid line is 1.8mm, and the spacing between two main grid lines is 84mm.The scheme one of prior art: have 2 main grid lines, thin grid line length is 153mm, and width is 75um, and the main grid line width is 1.8mm, and the main grid line is the linear grid line with thin grid line.
Table 1 is the grid line thin layer loss table of the scheme one of the solar battery sheet shown in the embodiment one and prior art.
Table 1:
Table 2 is the grid line shading-area table of the scheme one of the solar battery sheet shown in the embodiment one and prior art.
Table 2:
Solar battery sheet shown in the embodiment one is compared with the scheme one of prior art, and the thin layer loss has increased by 14.4%, and total shading-area has reduced 19.49%.
As shown in Figure 2, embodiment two: the live width of regular hexagon grid line is 75um, and the length of side is 3.5mm, and centre distance is 6mm, and the quantity that positive electrode arranges the main grid line is three, and the main grid line width is 1.8mm, and the main grid line-spacing solar battery sheet edge at edge is 25.5mm.The scheme two of prior art: have 3 main grid lines, thin grid line length is 153mm, and width is 75um, and the main grid line width is 1.8mm, and the main grid line is the linear grid line with thin grid line.
Table 3 is the grid line thin layer loss table of the scheme two of the solar battery sheet shown in the embodiment two and prior art.
Table 3:
Table 4 is the grid line shading-area table of the scheme two of the solar battery sheet shown in the embodiment two and prior art.
Table 4:
Solar battery sheet shown in the embodiment two is compared with the scheme two of prior art, and the thin layer loss has reduced 11.5%, and main grid line shading-area has reduced 16.67%.
Along with the orthohexagonal length of side increases, its loss to sheet resistance can reduce, but shading-area also can increase.
Solar battery sheet shown in the embodiments of the invention two is compared the transmission that not only increases electronics with solar battery sheet of the prior art, and thin layer loss and shading-area all can be minimized, and have finally promoted the photoelectric conversion efficiency of silicon solar cell.
Take above-mentioned foundation desirable embodiment of the present invention as enlightenment, by above-mentioned description, the relevant staff can in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (2)
1. the solar battery sheet of the low shading-area of a high transmission rates, it is characterized in that: the positive electrode of solar battery sheet comprises thin grid line and main grid line, thin grid line is comprised of regular hexagon grid line and imperfect hexagon grid line, all regular hexagon grid lines and imperfect hexagon grid line are connected with each other, the live width of described regular hexagon grid line is 75um, the length of side is 2.76mm, centre distance is 4.78mm, the quantity that described positive electrode arranges the main grid line is two, the width of main grid line is 1.8mm, and the spacing between two main grid lines is 84mm.
2. the solar battery sheet of the low shading-area of a high transmission rates, it is characterized in that: the positive electrode of solar battery sheet comprises thin grid line and main grid line, thin grid line is comprised of regular hexagon grid line and imperfect hexagon grid line, all regular hexagon grid lines and imperfect hexagon grid line are connected with each other, the live width of described regular hexagon grid line is 75um, the length of side is 3.5mm, centre distance is 6mm, the quantity that described positive electrode arranges the main grid line is three, the main grid line width is 1.8mm, and the main grid line-spacing solar battery sheet edge at edge is 25.5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010620839 CN102130194B (en) | 2010-12-31 | 2010-12-31 | High-transmission-rate low-shading-area solar cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010620839 CN102130194B (en) | 2010-12-31 | 2010-12-31 | High-transmission-rate low-shading-area solar cell |
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| CN102130194A CN102130194A (en) | 2011-07-20 |
| CN102130194B true CN102130194B (en) | 2013-01-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102403374A (en) * | 2011-11-09 | 2012-04-04 | 江西赛维Ldk太阳能高科技有限公司 | Solar cell plate, solar cell string and solar cell assembly |
| CN102569436A (en) * | 2011-12-31 | 2012-07-11 | 常州天合光能有限公司 | Solar cell slice |
| AT517404B1 (en) | 2015-02-13 | 2017-11-15 | Guger Forschungs Gmbh | Solar cell with metallic carrier dissipation structure |
| CN107146822B (en) * | 2017-06-27 | 2023-08-15 | 英利能源发展有限公司 | Solar cell capable of being connected at will without broken grid |
| CN108963004A (en) * | 2018-06-14 | 2018-12-07 | 东方日升（常州）新能源有限公司 | A kind of solar battery positive electrode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3805299B2 (en) * | 2002-11-26 | 2006-08-02 | 京セラ株式会社 | Solar cell element and manufacturing method thereof |
| CN201015115Y (en) * | 2007-02-06 | 2008-01-30 | 上海华达运新能源科技有限公司 | Grid modified type silicon photovoltaic cell |
| CN201436683U (en) * | 2009-04-03 | 2010-04-07 | 上海晶龙光电科技有限公司 | Electrode structure of solar energy cell |
| CN101710596A (en) * | 2009-11-23 | 2010-05-19 | 宁波太阳能电源有限公司 | Silicon solar battery |
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Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: TRINASOLAR Co.,Ltd. Address before: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: trina solar Ltd. |
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Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: trina solar Ltd. Address before: 213031, No. 2, Tianhe Road, Xinbei Industrial Park, Jiangsu, Changzhou Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. |
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