CN204516780U - Cell piece front gate line structure - Google Patents
Cell piece front gate line structure Download PDFInfo
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- CN204516780U CN204516780U CN201520223037.0U CN201520223037U CN204516780U CN 204516780 U CN204516780 U CN 204516780U CN 201520223037 U CN201520223037 U CN 201520223037U CN 204516780 U CN204516780 U CN 204516780U
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Abstract
The utility model discloses a kind of cell piece front gate line structure, it comprises mutual vertically arranged main grid and secondary grid, described main grid has main part and end portion, end portion is connected to the two ends of main part, main part is multi-segment structure, and be provided with multiple kidney-shaped pierced pattern groove in main part, described end portion is straight line strip structure, and the width of end portion is less than the width of main part.The utility model can not only improve light utilization efficiency and electron collection rate effectively, thus improves fill factor, curve factor and the conversion efficiency of solar cell, and can reduce the cost of manufacture of solar battery sheet.
Description
Technical field
The utility model relates to a kind of cell piece front gate line structure, belongs to cell piece grid line design technical field.
Background technology
At present, the needs that develop rapidly of solar energy industry constantly reduce Material Cost, improve that electricity conversion is high reduces cost of electricity-generating, reach with civil power with valency or the target lower than civil power electricity price.
Current conventional crystal silicon battery is along with the development of industrialization, and conversion efficiency promotes and cost reduction has had larger progress.The manufacturing process of crystal silicon solar batteries sheet generally has following several step: chemical cleaning and surface-texturing process, diffusion, etching edge and dephosphorization silex glass, depositing antireflection film, print electrode, sinter.Transform light energy is becoming in the process of electric energy by solar battery sheet, and its inner photo-generated carrier produced needs the electrode printed by outside collect and draw, and is then connected with external circuit, thus is transported out by electric current.Not only can be used for collecting photo-generated carrier by the electrode of described outside printing, and can also test solar cell, and then choose the cell piece of different efficiency, maximum power stage can be obtained when making solar module.
In prior art, solar cell adopts electrode to be main grid and secondary grid composition, and the area that main gate line and secondary grid line cover on silicon chip is comparatively large, and this makes the grid line shading rate of prior art reach more than 4%, reduces the utilization ratio of solar battery sheet.In addition, need precious metal as electrocondution slurry when printing electrode, the area that main gate line and secondary grid line cover on silicon chip also must make the use of electrocondution slurry increase comparatively greatly, therefore, causes the cost of manufacture of solar battery sheet higher.
Summary of the invention
Technical problem to be solved in the utility model is the defect overcoming prior art, a kind of cell piece front gate line structure is provided, it can not only improve light utilization efficiency and electron collection rate effectively, thus improve fill factor, curve factor and the conversion efficiency of solar cell, and the cost of manufacture of solar battery sheet can be reduced.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of cell piece front gate line structure, it comprises mutual vertically arranged main grid and secondary grid, described main grid has main part and end portion, end portion is connected to the two ends of main part, and main part is multi-segment structure, and is provided with multiple kidney-shaped pierced pattern groove in main part, described end portion is straight line strip structure, and the width of end portion is less than the width of main part.
The adhesive force of further raising main grid, reduce the phenomenon that main grid comes off widely, the width of the main grid coupling part that described secondary grid are connected with main grid is larger than the width of the remainder on secondary grid except main grid coupling part.
Further, the width of the main grid coupling part on described secondary grid is 100 μm, and the width of the remainder on secondary grid except main grid coupling part is 30 ~ 40 μm.
Further, multiple straight line bar shaped pierced pattern groove is also set in the main part of described main grid.
Further in order to effectively reduce the phenomenon of the edge overstriking produced in printing process, cell piece front gate line structure also comprises time secondary grid, and secondary secondary grid parallel with main grid, and secondary secondary grid are connected with the end points of secondary grid, and the width of secondary secondary grid is 30 μm.
Further, the width of the main part of described main grid is 1.5mm, and the width of described end portion is 0.3mm.
After have employed technique scheme, the utility model has following beneficial effect:
1) the solar battery sheet shading rate printing this front gate line structure is effectively reduced, battery shading rate of the present utility model is adopted to be reduced to about 4%, simultaneously because main gate line becomes hollow out, collect the capability improving of electronics, this makes the series resistance of solar battery sheet reduce, fill factor, curve factor rises, and then improves overall transformation efficiency;
2) front electrode area reduces, and the printing weight of anode silver paste also decreases, and then reduces the manufacturing cost of solar battery sheet.
3) design of pierced pattern groove and the design of main grid and secondary grid junction overstriking will substantially increase the adhesive force of main grid, and what greatly reduce that main grid comes off is bad.
Accompanying drawing explanation
Fig. 1 is the structural representation of cell piece front gate line structure of the present utility model;
Fig. 2 is the partial schematic diagram one of the main grid of cell piece of the present utility model;
Fig. 3 is the partial schematic diagram two of the main grid of cell piece of the present utility model.
Embodiment
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail.
As shown in Figures 1 to 3, a kind of cell piece front gate line structure, it comprises mutual vertically arranged main grid 1 and secondary grid 2, main grid 1 has main part 11 and end portion 12, end portion 12 is connected to the two ends of main part 11, and main part 11 is multi-segment structure, and is provided with multiple kidney-shaped pierced pattern groove 111 in main part 11, end portion 12 is straight line strip structure, and the width of end portion 12 is less than the width of main part 11.
As shown in Figure 2,3, the width of the main grid coupling part 21 secondary grid 2 are connected with main grid 1 is larger than the width of the remainder on secondary grid 2 except main grid coupling part 21.
The width of the main grid coupling part 21 on secondary grid 2 is 100 μm, and the width of the remainder on secondary grid 2 except main grid coupling part 21 is 30 ~ 40 μm.
As shown in Figure 2,3, in the main part 11 of main grid 1, multiple straight line bar shaped pierced pattern groove 112 is also set.
As shown in Figure 1, cell piece front gate line structure also comprises time secondary grid 3, and secondary secondary grid 3 parallel with main grid 1, and secondary secondary grid 3 are connected with the end points of secondary grid 2, and the width of secondary secondary grid 3 is 30 μm.
The width of the main part 11 of main grid 1 is 1.5mm, and the width of end portion 12 is 0.3mm.
The utility model finds after deliberation, use front gate line structure of the present utility model, its design index of refraction can be reduced to 3.75% from about 4.2% of existing battery, effectively improve the light-receiving area of battery, improve conversion efficiency, its main grid hollow out rate is promoted to 43.45% from 21% of existing battery, and these structures effectively can reduce the use amount 0.01g of electrode slurry, reduces the manufacturing cost of solar battery sheet.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the utility model solves are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a cell piece front gate line structure, it is characterized in that, it comprises mutual vertically arranged main grid (1) and secondary grid (2), described main grid (1) has main part (11) and end portion (12), end portion (12) is connected to the two ends of main part (11), main part (11) is multi-segment structure, and be provided with multiple kidney-shaped pierced pattern groove (111) in main part (11), described end portion (12) is straight line strip structure, the width of end portion (12) is less than the width of main part (11).
2. cell piece front gate line structure according to claim 1, is characterized in that: the width of the width remainder except main grid coupling part (21) except upper than secondary grid (2) of the upper main grid coupling part (21) be connected with main grid (1) of described secondary grid (2) is large.
3. cell piece front gate line structure according to claim 2, it is characterized in that: the width of the main grid coupling part (21) on described secondary grid (2) is 100 μm, the width of the upper remainder except main grid coupling part (21) of secondary grid (2) is 30 ~ 40 μm.
4. the cell piece front gate line structure according to claim 1 or 2 or 3, is characterized in that: also arrange multiple straight line bar shaped pierced pattern groove (112) in the main part (11) of described main grid (1).
5. the cell piece front gate line structure according to claim 1 or 2 or 3, it is characterized in that: also comprise time secondary grid (3), secondary secondary grid (3) parallel with main grid (1), and secondary secondary grid (3) are connected with the end points of secondary grid (2), the width of secondary secondary grid (3) is 30 μm.
6. the cell piece front gate line structure according to claim 1 or 2 or 3, is characterized in that: the width of the main part (11) of described main grid (1) is 1.5mm, and the width of described end portion (12) is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520223037.0U CN204516780U (en) | 2015-04-14 | 2015-04-14 | Cell piece front gate line structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520223037.0U CN204516780U (en) | 2015-04-14 | 2015-04-14 | Cell piece front gate line structure |
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| Publication Number | Publication Date |
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| CN204516780U true CN204516780U (en) | 2015-07-29 |
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| CN201520223037.0U Active CN204516780U (en) | 2015-04-14 | 2015-04-14 | Cell piece front gate line structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083914A (en) * | 2021-11-15 | 2022-02-25 | 横店集团东磁股份有限公司 | Printing design method of solar cell, printing assembly and photovoltaic assembly |
-
2015
- 2015-04-14 CN CN201520223037.0U patent/CN204516780U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083914A (en) * | 2021-11-15 | 2022-02-25 | 横店集团东磁股份有限公司 | Printing design method of solar cell, printing assembly and photovoltaic assembly |
| CN114083914B (en) * | 2021-11-15 | 2022-12-13 | 横店集团东磁股份有限公司 | Printing design method of solar cell, printing assembly and photovoltaic assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: TRINA SOLAR 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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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: trina solar Ltd. Address before: Tianhe Electronic Industrial Park Road 213022 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. |