CN204315583U - A kind of point, toe-in close the solar battery sheet of new electrode structure - Google Patents
A kind of point, toe-in close the solar battery sheet of new electrode structure Download PDFInfo
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- CN204315583U CN204315583U CN201520003886.5U CN201520003886U CN204315583U CN 204315583 U CN204315583 U CN 204315583U CN 201520003886 U CN201520003886 U CN 201520003886U CN 204315583 U CN204315583 U CN 204315583U
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- grid line
- point
- solar battery
- toe
- battery sheet
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Abstract
The utility model discloses the solar battery sheet of a kind of point, toe-in conjunction new electrode structure, comprise cell piece front, crystal silicon chip and the cell piece back side, described cell piece front is provided with equidistant equally distributed some grid line, the parallel thin grid line of tie point grid line and the main gate line perpendicular to thin grid line.The solar battery sheet that the utility model provides, made the structure of Joint of Line and Dot into by former thin grid line structure, utilize point to form good ohmic contact, reduce contact resistance, utilize thin grid line collected current, effectively improve the conversion efficiency of cell piece; By reducing the height of thin grid line, effectively reduce the printing unit consumption of Ag slurry.
Description
Technical field
The utility model relates to photovoltaic solar cell field, particularly the solar battery sheet of a kind of point, toe-in conjunction new electrode structure.
Background technology
Along with the recovery of World Economics, photovoltaic industry is moving towards the increasingly mature stable stage, has higher requirement to current explained hereafter.Reduce production cost, improve the important channel that the conversion efficiency of cell piece is the competitiveness promoting photovoltaic industry.
utility model summary of the invention
Goal of the invention: for problems of the prior art, the utility model proposes the solar battery sheet of a kind of point, toe-in conjunction new electrode structure, improves the conversion efficiency of cell piece, and decrease positive electrode precious metal Ag slurry unit consumption.
Technical scheme: Yi Zhongdian, toe-in close the solar battery sheet of new electrode structure, comprise cell piece front, crystal silicon chip and the cell piece back side, described cell piece front is provided with equidistant equally distributed some grid line, the parallel thin grid line of tie point grid line and the main gate line perpendicular to thin grid line.
Described some grid line local or all penetrate SiNx and silicon substrate forms ohmic contact, described thin grid line does not penetrate SiNx and contacts with silicon substrate.
The height of described thin grid line is 10-50um, and width is 25-50um.
The height of described some grid line is 15-30um.
The shape of described some grid line is rectangle, circle, ellipse, cross, I shape and other rules or irregularly shaped.
On the thin grid line of described every bar, the spacing of consecutive points grid line is 0.5-1.5mm.
The making material of described some grid line is the silver slurry with partial penetration SiNx characteristic; The making material of described thin grid line is the combination of non-burn-through resistance silver slurry, copper, nickel, tin or above-mentioned metal.
The generation type of described some grid line is silk screen printing or inkjet printing.
The generation type of described thin grid line is silk screen printing, inkjet printing, hot weld or plating.
Beneficial effect: the solar battery sheet that the utility model provides, made the structure of Joint of Line and Dot into by former thin grid line structure, utilize point to form good ohmic contact, reduce contact resistance, utilize thin grid line collected current, effectively improve the conversion efficiency of cell piece; By reducing the height of thin grid line, effectively reduce the printing unit consumption of Ag slurry.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the close-up schematic view of Fig. 1;
Fig. 3 is the structural representation of first impression electrode pattern of the present utility model;
Fig. 4 is the structural representation of second impression electrode pattern of the present utility model.
Embodiment
Below in conjunction with specific embodiment, illustrate the utility model further, these embodiments should be understood and be only not used in restriction scope of the present utility model for illustration of the utility model, after having read the utility model, those skilled in the art have all fallen within the application's claims limited range to various equivalents of the present utility model.
Solar battery sheet electrode structure at right side as depicted in figs. 1 and 2 comprises some equidistant equally distributed some grid lines, the parallel thin grid line of tie point grid line and the main gate line perpendicular to thin grid line, and described every bar point grid line is only connected with a thin grid line; The height of described some grid line is 15-30um, and the shape of some grid line is rectangle, circle, ellipse, cross, I shape; The height of described thin grid line is 10-50um, and width is 25-50um; The point grid line quantity that the thin grid line of described every bar connects is close, is 100-300 bar, and on every thin grid line of bar, the spacing of consecutive points grid line is 0.5-1.5mm.
Different electrode patterns is printed to cell piece front by twice printing by described solar battery sheet, first the silicon chip after plated film is printed some grid line as shown in Figure 3, then dries; Again above-mentioned silicon chip is printed thin grid line as shown in Figure 4 and main gate line, then sinter.Wherein the slurry that adopts of twice printing is different, and first time adopts the Ag slurry of burn-through resistance, the slurry local at some grid line place or all burn SiNx layer, forms good ohmic contact with silicon substrate; The combination of what second time adopted the is silver slurry of non-burn-through resistance, copper, nickel or above-mentioned metal, the slurry at thin grid line place does not burn SiNx layer, only plays collection electronics and imports to effect in main gate line.
The generation type of described some grid line is silk screen printing or inkjet printing, and the generation type of described thin grid line is silk screen printing, inkjet printing, hot weld or plating etc.
Claims (9)
1. a point, toe-in close the solar battery sheet of new electrode structure, comprise cell piece front, crystal silicon chip and the cell piece back side, it is characterized in that, described cell piece front is provided with equidistant equally distributed some grid line, the parallel thin grid line of tie point grid line and the main gate line perpendicular to thin grid line.
2. point as claimed in claim 1, toe-in close the solar battery sheet of new electrode structure, it is characterized in that, described some grid line local or all penetrate SiNx and silicon substrate forms ohmic contact, and described thin grid line does not penetrate SiNx and contacts with silicon substrate.
3. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, it is characterized in that, the height of described thin grid line is 10-50um, and width is 25-50um.
4. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, it is characterized in that, the height of described some grid line is 15-30um.
5. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, it is characterized in that, the shape of described some grid line is rectangle, circle, ellipse, cross, I shape.
6. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, it is characterized in that, on the thin grid line of described every bar, the spacing of consecutive points grid line is 0.5-1.5mm.
7. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, is characterized in that, the making material of described some grid line is the silver slurry with partial penetration SiNx characteristic; The making material of described thin grid line is the combination of non-burn-through resistance silver slurry, copper, nickel, tin or above-mentioned metal.
8. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, it is characterized in that, the generation type of described some grid line is silk screen printing or inkjet printing.
9. the solar battery sheet of point as claimed in claim 1, toe-in conjunction new electrode structure, it is characterized in that, the generation type of described thin grid line is silk screen printing, inkjet printing, hot weld or plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520003886.5U CN204315583U (en) | 2015-01-05 | 2015-01-05 | A kind of point, toe-in close the solar battery sheet of new electrode structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520003886.5U CN204315583U (en) | 2015-01-05 | 2015-01-05 | A kind of point, toe-in close the solar battery sheet of new electrode structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204315583U true CN204315583U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520003886.5U Active CN204315583U (en) | 2015-01-05 | 2015-01-05 | A kind of point, toe-in close the solar battery sheet of new electrode structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204315583U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155249A (en) * | 2017-12-15 | 2018-06-12 | 南京日托光伏科技股份有限公司 | A kind of MWT front electrode of solar battery and preparation method thereof |
-
2015
- 2015-01-05 CN CN201520003886.5U patent/CN204315583U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155249A (en) * | 2017-12-15 | 2018-06-12 | 南京日托光伏科技股份有限公司 | A kind of MWT front electrode of solar battery and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 12 Xinhua Road, Xinhua District, Wuxi City, Jiangsu Province, 214028 Patentee after: Wuxi Ritong Photovoltaic Technology Co., Ltd. Address before: No. 12 Xinhua Road, Wuxi National High-tech Industrial Development Zone, Wuxi City, Jiangsu Province, 214028 Patentee before: WUXI DEXIN SOLAR POWER CO., LTD. |
|
| CP03 | Change of name, title or address |