CN204596801U - A kind of N-type double-sided solar battery sheet of many main grids - Google Patents
A kind of N-type double-sided solar battery sheet of many main grids Download PDFInfo
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- CN204596801U CN204596801U CN201420577548.8U CN201420577548U CN204596801U CN 204596801 U CN204596801 U CN 204596801U CN 201420577548 U CN201420577548 U CN 201420577548U CN 204596801 U CN204596801 U CN 204596801U
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- type double
- main
- solar battery
- battery sheet
- gate line
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- 238000000034 method Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 239000002002 slurry Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003854 Surface Print Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
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- Photovoltaic Devices (AREA)
Abstract
The utility model relates to a kind of N-type double-sided solar battery sheet of many main grids, and the front of this cell piece and the back side are printed with secondary grid line and main gate line orthogonal with secondary grid line, and the quantity of main gate line is greater than 3.Compared with prior art, the utility model, by increasing the main grid quantity of N-type double-sided solar battery sheet front and back, not only can reduce the distance of electric current process in thin grid, also reduces the electric current of every bar main grid self carrying.Many main grids structure can coordinate thinner grid line in N-type double-side cell aspect and obviously can not affect fill factor, curve factor, the quantity simultaneously increasing main grid is effective equally to the resistance reduced after battery pack string, and then improves the photoelectric conversion efficiency of N-type double-sided solar battery sheet.
Description
Technical field
The utility model relates to solar cell and manufactures field, especially relates to a kind of N-type double-sided solar battery sheet of many main grids.
Background technology
Day by day serious along with global energy crisis, developing new forms of energy becomes current energy field major subjects.Solar energy is pollution-free with it, inexhaustible and without the features such as region restriction become new energy development development a main object.Utilizing solar cell to carry out photovoltaic generation is the major way utilizing solar energy now.The carrier of solar cell is silicon chip, is divided into P type solar cell and N-type solar cell according to the difference of doping type in its silicon wafer to manufacture technique.Wherein, N-type solar cell, due to more more stable than the performance of P type solar cell properties, has longer minority carrier life time, and the light decay characteristic significantly reduced, and mainly develops problem for one that therefore becomes photovoltaic industry gradually.
N-type solar cell is in the manufacturing process of solar cell, and substantially round two emphasis, one is the photoelectric conversion efficiency improving solar cell, and another is the production cost reducing solar cell.At present, in the production process of N-type double-sided solar battery sheet, the main electrode adopting the technique of silk screen printing to make front and back.
N-type double-sided solar battery, as the type in N-type solar cell, is attempted adopting thinner main grid and thin grid to increase the effective area of shining light of battery, is reduced printing slurry cost simultaneously in optimizing process.But find in the application process of reality along with electrode attenuates, conduction cross-sectional area is less, and ohmic loss is larger, and series resistance improves, and therefore the fill factor, curve factor of battery also reduces, finally affect overall performance electrical performance performance.
Utility model content
The purpose of this utility model is exactly provide a kind of object improved the main grid printed by N-type double-sided solar battery sheet front and the arrangement of secondary grid silver slurry layer to overcome defect that above-mentioned prior art exists, and N-type double-sided solar battery sheet is accomplished between cost and conversion efficiency, and both take into account.
The purpose of this utility model can be achieved through the following technical solutions:
A N-type double-sided solar battery sheet for many main grids, the front of this cell piece and the back side are printed with secondary grid line and main gate line orthogonal with secondary grid line, and on cell piece the same face, the quantity of main gate line is greater than 3.
As preferred embodiment, main gate line is printed on the same face 4-15 root.
Preferred execution mode, main gate line is preferably printed on the same face 4-6 root.
The width of main gate line is 0.02-1.50mm.
The width of the main gate line on the same face is identical, also can be different.
Width and the quantity of the main gate line not on coplanar are identical, also can be different.
The concrete pattern of every root main gate line is not limit, such as can adopt conventional continuously, multistage, hollow out or other combining structure.
Compared with prior art, the utility model has the following advantages:
1, the interval between the adjacent main grid brought due to the many main grids of battery surface reduces, and makes cell piece electric current collect the better effects if of main grid, reduces the negative effect that the printing exceptions such as empty print, broken string are brought efficiency;
2, Conventional printing process realizes the lifting of conversion efficiency by changing the secondary grid quantity of major and minor grid width and change, but the secondary grid line often significantly increased under this technique is while minimizing battery surface light-receiving area, more can bring the increase that slurry consumes.The design of N-type double-side cell many main grids can make the major and minor grid quantity of battery surface have the larger collocation degree of freedom, and the reduction simply by adjustment main grid quantity matching pair grid quantity just can realize the consumption that can also reduce slurry while conversion efficiency promotes;
3, many main grid designs of N-type double-side cell are lower can realize narrower secondary grid design, and then increases the light-receiving area on cell piece surface, and the window of technique adjustment is larger.Under the effect of different silver slurry characteristic, by adjusting the shading-area of printed pattern, while not changing series resistance, promote the short circuit current of battery, the light-receiving area increasing cell piece surface can also make the Interface composites of silver slurry particle and PN junction contact position reduce, thus promote open circuit voltage to a certain extent, the final photoelectric conversion efficiency promoting N-type double-side cell.
Accompanying drawing explanation
Fig. 1 is the surface texture partial schematic diagram of existing 3 main grid solar cells;
Fig. 2 is surface texture partial schematic diagram of the present utility model.
In figure, 1 is that main gate line, 2 is for secondary grid line.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Comparative example
Conventional with the printed pattern at the positive back side of many main grids N-type double-sided solar battery sheet, the arrangement situation example of main gate line and secondary grid line is see Fig. 1:
The cell piece surface printing of conventional N-type double-side cell has the main gate line 1 (width 0.20 ~ 2.00mm) of indefinite graphic designs, and the secondary grid line 2 (secondary grid width is not less than 20um) of orthogonal n bar with it.The quantity of main gate line 1 is no more than 3, and parallel each other.The quantity of secondary grid line 2 is not limit, and is n bar, parallel equally each other.
Embodiment
A kind of N-type double-sided solar battery sheet of many main grids, its structure as shown in Figure 2, the front of this cell piece and the back side are printed with secondary grid line 2 and main gate line 1 orthogonal with secondary grid line 2, and the quantity of main gate line 1 is greater than 3, can be 4-15 root, width is 0.02-1.50mm, in the present embodiment, main gate line 1 is printed with 11 altogether, wherein 4 wider width, for 1mm, between adjacent two wider main gate line 1, be respectively printed with the main gate line 1 of width relative narrower (0.05mm).Except change width, the shape and structure of main gate line also can change to some extent, such as, can adopt the structure of multistage and hollow out, and this design can be applied in the front and back of N-type double-side cell sheet.
By increasing the main grid quantity of N-type double-sided solar battery sheet front and back, not only can reduce the distance of electric current process in thin grid, also reducing the electric current of every bar main grid self carrying.Many main grids structure can coordinate thinner grid line in N-type double-side cell aspect and obviously can not affect fill factor, curve factor, the quantity simultaneously increasing main grid is effective equally to the resistance reduced after battery pack string, and then improves the photoelectric conversion efficiency of N-type double-sided solar battery sheet.Table 1 is the testing result of the solar cell that 4 main gate line and 3 main gate line printings obtain.
Table 1
In Data Comparison, the N-type double-side cell of 4 main grid designs reduces string resistance 0.2m Ω, fill factor, curve factor promotes 0.35% (absolute value), Isc slightly loses because the shading-area increased affects, but photoelectric conversion efficiency improves nearly 0.04% (absolute value).
Claims (9)
1. the N-type double-sided solar battery sheet of main grid more than a kind, the front of this cell piece and the back side are printed with secondary grid line and main gate line orthogonal with secondary grid line, it is characterized in that, on cell piece the same face, the quantity of main gate line is 4-15 root, and the interval between the adjacent main grid that the many main grids of battery surface bring reduces.
2. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 1, is characterized in that, described main gate line is preferably printed on the same face 4-6 root.
3. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 1, is characterized in that, the width of described main gate line is 0.02-1.50mm.
4. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 1, it is characterized in that, the width of the main gate line on the same face is identical.
5. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 1, is characterized in that, the width of the main gate line on the same face is different.
6. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 1, is characterized in that, width and the quantity of the main gate line not on coplanar are identical.
7. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 1, is characterized in that, the width of the main gate line not on coplanar and quantity difference.
8. the N-type double-sided solar battery sheet of a kind of many main grids according to any one of claim 1-7, is characterized in that, the concrete pattern of every root main gate line is not limit.
9. the N-type double-sided solar battery sheet of a kind of many main grids according to claim 8, is characterized in that, described main gate line adopt conventional continuously, multistage, hollow out or other combining structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577548.8U CN204596801U (en) | 2014-10-08 | 2014-10-08 | A kind of N-type double-sided solar battery sheet of many main grids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420577548.8U CN204596801U (en) | 2014-10-08 | 2014-10-08 | A kind of N-type double-sided solar battery sheet of many main grids |
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| Publication Number | Publication Date |
|---|---|
| CN204596801U true CN204596801U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420577548.8U Expired - Fee Related CN204596801U (en) | 2014-10-08 | 2014-10-08 | A kind of N-type double-sided solar battery sheet of many main grids |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107170841A (en) * | 2017-06-07 | 2017-09-15 | 苏州携创新能源科技有限公司 | Solar cell photovoltaic module and solar cell photovoltaic component |
| CN107785445A (en) * | 2016-08-24 | 2018-03-09 | 天津英利新能源有限公司 | One kind can be bonded photovoltaic cell |
| CN107946390A (en) * | 2017-12-04 | 2018-04-20 | 孙健春 | It is a kind of that there is the solar cell and production method for changing power grid |
| CN108022992A (en) * | 2017-12-29 | 2018-05-11 | 苏州阿特斯阳光电力科技有限公司 | Cell piece and photovoltaic module |
| CN108183139A (en) * | 2017-12-20 | 2018-06-19 | 横店集团东磁股份有限公司 | Solar battery sheet |
| CN112531039A (en) * | 2020-11-19 | 2021-03-19 | 晶澳（扬州）太阳能科技有限公司 | Back electrode of double-sided battery and double-sided battery |
-
2014
- 2014-10-08 CN CN201420577548.8U patent/CN204596801U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785445A (en) * | 2016-08-24 | 2018-03-09 | 天津英利新能源有限公司 | One kind can be bonded photovoltaic cell |
| CN107170841A (en) * | 2017-06-07 | 2017-09-15 | 苏州携创新能源科技有限公司 | Solar cell photovoltaic module and solar cell photovoltaic component |
| EP3637477A4 (en) * | 2017-06-07 | 2021-05-19 | Suzhou Coop & Inno Green Energy Technology Co., Ltd. | Solar cell photovoltaic module and solar cell photovoltaic array |
| CN107946390A (en) * | 2017-12-04 | 2018-04-20 | 孙健春 | It is a kind of that there is the solar cell and production method for changing power grid |
| CN108183139A (en) * | 2017-12-20 | 2018-06-19 | 横店集团东磁股份有限公司 | Solar battery sheet |
| CN108022992A (en) * | 2017-12-29 | 2018-05-11 | 苏州阿特斯阳光电力科技有限公司 | Cell piece and photovoltaic module |
| CN112531039A (en) * | 2020-11-19 | 2021-03-19 | 晶澳（扬州）太阳能科技有限公司 | Back electrode of double-sided battery and double-sided battery |
| CN112531039B (en) * | 2020-11-19 | 2023-05-19 | 晶澳（扬州）太阳能科技有限公司 | Back electrode of double-sided battery and double-sided battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 |