CN203277401U - Special-shaped main gate lines on solar cell - Google Patents
Special-shaped main gate lines on solar cell Download PDFInfo
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- CN203277401U CN203277401U CN 201320279446 CN201320279446U CN203277401U CN 203277401 U CN203277401 U CN 203277401U CN 201320279446 CN201320279446 CN 201320279446 CN 201320279446 U CN201320279446 U CN 201320279446U CN 203277401 U CN203277401 U CN 203277401U
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- shaped main
- gate lines
- main gate
- solar cell
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Abstract
The utility model discloses special-shaped main gate lines on a solar cell. The special-shaped main gate lines are S-shaped. There are at least three special-shaped main gate lines. Auxiliary gate lines on the solar cell are wavy. The width of each of the special-shaped main gate lines is 0.6mm to 1.8mm, and the thickness of each of the special-shaped main gate lines is 0.2mm to 0.8mm. According to the special-shaped main gate lines, the current collection effect of the solar cell is better, and the influence on solar cell conversion efficiency by printing abnormality such as false printing and breaking is reduced because through the special-shaped main gate lines, current has more path selections to reach a main gate under the states of false printing and breaking of the auxiliary gate lines.
Description
Technical field
The utility model relates to a kind of solar battery sheet, is specifically related to the special-shaped main grid line on a kind of solar battery sheet.
Background technology
Along with day being becoming tight of global energy, solar energy is subject to the extensive attention of countries in the world with exclusive advantages such as clean energy resource, the market space are large.The advantages such as that photovoltaic generation has is safe and reliable, noiseless, failure rate is low, solar cell is in photovoltaic power generation technology, solar energy directly to be converted to the main devices of electric energy.
Common crystal silicon solar energy battery is that the P type layer that is made of back electrode, back surface field, semi-conducting material, N-type layer, P-N knot, antireflection film, positive gate electrode etc. partly consist of.When solar irradiation was mapped to solar cell surface, antireflection film and suede structure can effectively reduce the light reflection loss of battery surface.After semiconductor structure in solar cell absorbs solar energy, excite and produce electronics, hole pair, electronics, hole are to being separated by the inner P-N knot of semiconductor built-in field, electronics flows into the N district, the hole flows into the P district, form the photoproduction electric field, if the positive and negative electrode of crystal-silicon solar cell is connected with external circuit, just have photogenerated current to flow through in external circuit.
The positive coated main grid of existing conventional crystal silicon solar cell sheet and arranging of secondary grid silver slurry layer are all parallel lines, in the front of cell piece, be coated with the silver slurry layer of master (main grid width 1-2mm) that three (or two) be parallel to each other and perpendicular secondary grid of N bar (secondary grid width〉20um).The arrangement principle of main grid and secondary grid is: the number of main grid is no more than three: the number of secondary grid can be the N bar: main grid or secondary grid are parallel to each other between each; Mutually vertical between main grid and secondary grid.The deficiency that the cell piece that this major and minor grid are arranged in use exists is: be unfavorable for the improvement of cell piece, because the number of main grid is no more than three, room for improvement is very little, can only carry out refinement for the width of secondary grid or the radical of secondary grid be adjusted, but because of the width of secondary grid itself just narrow, if reduce again, will make the void seal that often easily occurs in silver slurry screen printing process, the broken string phenomenon can be more serious, the conversion efficiency that this can reduce cell piece makes and can't accomplish between cell piece cost and conversion efficiency that both take into account.
The utility model content
The purpose of this utility model is to overcome the defective that exists in prior art, a kind of special-shaped main grid line is provided, this abnormity main grid line is for the deficiency of arranging and in use existing of the positive coated main grid of existing conventional crystal silicon solar cell sheet and secondary grid silver slurry layer, and a kind of improvement that the positive coated main grid of conventional crystal silicon solar cell sheet and secondary grid silver slurry layer are arranged is proposed, can make many main grids solar battery sheet of accomplishing between cell piece cost and conversion efficiency that both take into account.
For achieving the above object, the technical solution of the utility model is the special-shaped main grid line on a kind of solar battery sheet of design, it is characterized in that, described special-shaped main grid line is S shape, the number of described special-shaped main grid line is at least three, and the secondary grid line on described solar battery sheet is waveform.
Wherein preferred technical scheme is, the width of described special-shaped main grid line is 0.6 ~ 1.8mm, and the thickness of described special-shaped main grid line is 0.2 ~ 0.8mm.
Advantage of the present utility model and beneficial effect are: 1, the electric current collection effect of cell piece is better, the abnormal cell piece of the printings such as empty seal, broken string reduces the impact of cell piece conversion efficiency, because special-shaped main grid can make electric current occur at secondary grid under the state of empty seal broken string, having more, the multipath selection arrives main grid; 2, major and minor grid radical has the larger collocation degree of freedom, and the adjustable space of cell piece technique is larger, saves positive silver slurry consumption; Conventional design is under increasingly mature silver-colored slurry system, and promoting conversion efficiency can only realize by the width that changes major and minor grid and the approach that increases secondary grid radical, and when promoting conversion efficiency, silver slurry consumption inevitably increases; But the utility model can lead to special-shaped main grid, and suitably adjusts the main grid radical and just can reach and can promote conversion efficiency and can save the purpose of slurry again; 3, reduce the cell piece shading-area, promote the cell piece conversion efficiency, the window that technique is adjusted is larger; Under different silver-colored slurry system, shading-area by the adjusted design figure, under the prerequisite that does not change series resistance, promote the short circuit current of battery, reduce compound the reducing in interface that shading-area can also make silver slurry particle and PN junction contact position, thereby promote to a certain extent open circuit voltage, get formula by conversion efficiency two short circuit current * open circuit voltage * fill factor, curve factor/(cell area * tests light intensity) and find, conversion efficiency can get a promotion.
Description of drawings
Fig. 1 is the special-shaped main grid line structure schematic diagram on the utility model solar battery sheet.
In figure: 1, special-shaped main grid line; 2, solar battery sheet; 3, secondary grid line.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection range of the present utility model with this.
As shown in Figure 1, the utility model is the special-shaped main grid line on a kind of solar battery sheet, and this abnormity main grid line 1 is S shape, and the number of special-shaped main grid line 1 is at least three, and the secondary grid line 3 on described solar battery sheet 2 is waveform.
Preferred embodiment is in the utility model, and the width of special-shaped main grid line 1 is 0.6 ~ 1.8mm, and the thickness of special-shaped main grid line 1 is 0.2 ~ 0.8mm.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (2)
1. the special-shaped main grid line on a solar battery sheet, is characterized in that, described special-shaped main grid line is S shape, and the number of described special-shaped main grid line is at least three, and the secondary grid line on described solar battery sheet is waveform.
2. the special-shaped main grid line on solar battery sheet as claimed in claim 1, is characterized in that, the width of described special-shaped main grid line is 0.6 ~ 1.8mm, and the thickness of described special-shaped main grid line is 0.2 ~ 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320279446 CN203277401U (en) | 2013-05-21 | 2013-05-21 | Special-shaped main gate lines on solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320279446 CN203277401U (en) | 2013-05-21 | 2013-05-21 | Special-shaped main gate lines on solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203277401U true CN203277401U (en) | 2013-11-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320279446 Expired - Fee Related CN203277401U (en) | 2013-05-21 | 2013-05-21 | Special-shaped main gate lines on solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203277401U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465868A (en) * | 2014-11-21 | 2015-03-25 | 广东爱康太阳能科技有限公司 | Crystalline silicon solar cell and preparing method thereof |
| CN106364140A (en) * | 2016-10-25 | 2017-02-01 | 昆山良品丝印器材有限公司 | Film structure for solar crystalline silicon battery slice and printing screen of film structure |
| CN109545862A (en) * | 2018-10-08 | 2019-03-29 | 江西展宇新能源股份有限公司 | A kind of solar battery and preparation method thereof |
-
2013
- 2013-05-21 CN CN 201320279446 patent/CN203277401U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465868A (en) * | 2014-11-21 | 2015-03-25 | 广东爱康太阳能科技有限公司 | Crystalline silicon solar cell and preparing method thereof |
| CN106364140A (en) * | 2016-10-25 | 2017-02-01 | 昆山良品丝印器材有限公司 | Film structure for solar crystalline silicon battery slice and printing screen of film structure |
| CN106364140B (en) * | 2016-10-25 | 2018-06-15 | 昆山良品丝印器材有限公司 | Solar energy crystalline silicon battery plate film structure and its printing screen plate |
| CN109545862A (en) * | 2018-10-08 | 2019-03-29 | 江西展宇新能源股份有限公司 | A kind 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140521 |