CN206505930U - A kind of solar battery sheet with high conductivity - Google Patents
A kind of solar battery sheet with high conductivity Download PDFInfo
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- CN206505930U CN206505930U CN201720229206.0U CN201720229206U CN206505930U CN 206505930 U CN206505930 U CN 206505930U CN 201720229206 U CN201720229206 U CN 201720229206U CN 206505930 U CN206505930 U CN 206505930U
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- solar battery
- battery sheet
- main gate
- gate line
- base material
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a kind of solar battery sheet with high conductivity, including solar battery sheet base material and main gate line, the secondary grid line of silver is printed on the solar battery sheet base material, the main gate line is the transparent alloy crystal film being covered on solar battery sheet base material, it is located at the secondary grid line of the silver on the same face of solar battery sheet base material, direction is vertical with silver-colored secondary grid line.The alloy crystal film of the cell piece main gate line is transparent, and the light of cell piece is not blocked, it is possible to increase the efficiency of solar battery sheet；Main gate line is made of vanadium oxide and tin oxide alloy powder, lower than silver grating line cost；Main gate line is transparent, width and height is not limited, the sectional area that collected current passes through is bigger, possesses more preferable electric current collection effect.
Description
Technical field
The utility model belongs to technical field of solar batteries, in particular it relates to a kind of solar energy with high conductivity
Cell piece.
Background technology
At present, the electric current collection of solar cell especially silicon solar cell is completed mainly by the grid line of printing.Grid line
Mainly the silver paste comprising silk-screen printing, as front gate line material, back side grid line material is used as with the aluminium paste of silk-screen printing to material.
Silver paste is opaque with aluminium paste, and the grid region light of printing is blocked, and causes the reduction of solar battery efficiency.Moreover, by
The important component of solar cell cost of manufacture in the expensive of silver paste, be unfavorable for solar cell power generation into
This reduction.
Vanadium oxide (especially vanadium tetraoxide, vanadic anhydride vanadium tetraoxide can be reduced under weak reducing condition)
Decrease temperature crystalline forms a kind of transparent crystalline material to powder after melting, and vanadium tetraoxide has good translucency；In rich tin
Alloy material in, tin oxide forms tin thin layer after being partially reduced on surface, and the contact with silicon is more prone to affine, and can
To keep more excellent electric conductivity.
So, solar battery efficiency is carried using grid line material a kind of with transparent characteristic and that conductance is relatively low
The reduction of high and cost of sizing agent is respectively provided with beneficial effect.
Utility model content
The purpose of this utility model is that there is provided a kind of solar cell with high conductivity in order to overcome drawbacks described above
Piece.
The purpose of this utility model is implemented by the following technical programs：
A kind of solar battery sheet with high conductivity, including solar battery sheet base material and main gate line, it is described
The secondary grid line of silver is printed on solar battery sheet base material, the main gate line is to be covered on solar battery sheet base material
Transparent alloy crystal film, is located on the same face of solar battery sheet base material with the secondary grid line of the silver, direction and the secondary grid of silver
Line is vertical.
Further, the width of the main gate line is 0.2-1mm, is highly 0.1-2mm.
Further, the main gate line by the dispersion comprising vanadium oxide powder and tin oxide powder in solar-electricity
On the piece base material of pond, formed after melting and annealing, the dispersant in the dispersion liquid is organic dispersing agent；
The solar battery sheet also includes the printing opacity organic film of covering main gate line.
Further, the mol ratio of the vanadium oxide and tin oxide is 1-2:1；
The vanadium oxide is the pure V above of analysis2O5And V2O4Mixture, 1 μm of granularity ＜；
The tin oxide is the pure SnO, 1 μm of granularity ＜ above of analysis；
The organic dispersing agent is volume ratio 1:5 isobutanol and the mixture of phenmethylol；
The printing opacity organic film material includes EVA plastic cement.
Further, 100 μm of the crystal grain ＞ of the alloy crystal film, the top layer of alloy crystal film is thickness >=10 μm
Tin thin layer.
The main gate line of the utility model solar battery sheet is applied by the dispersion liquid comprising vanadium oxide powder and tin oxide powder
Overlay on solar battery sheet base material, formed after melting and annealing, main gate line is the transparent conjunction with high conductivity
Gold crystals by adopting film.The tin thin film layer of tin oxide formation high conductivity in melting and annealing process.Vanadic anhydride is in reducing atmosphere
Major part is reduced to vanadium tetraoxide, forms alloy crystal film, the characteristics of conductive and translucency is excellent.Due to this reality
Transparent with novel conductive grid line, to possess more preferable electric current collection effect, sectional area is bigger compared with conventional silver grating line.
Because the vanadium oxide contained in alloy crystal film is easily aoxidized in atmosphere, so being used in weakly reducing atmosphere
The encapsulating materials such as organic glued membrane are encapsulated in time to main gate line, to the guarantor of the characteristics such as the efficiency of solar battery sheet before packaging
Hold there is provided more excellent condition, be that the encapsulation of follow-up solar cell module is provided convenience.
The utility model has the advantages that：
（1）The alloy crystal film of main gate line is transparent, and the light of cell piece is not blocked, it is possible to increase the effect of solar battery sheet
Rate；
（2）Main gate line is made of vanadium oxide and tin oxide alloy powder, lower than silver grating line cost；
（3）Main gate line is transparent, width and height is not limited, the sectional area that collected current passes through is bigger, possesses more preferably
Electric current collection effect.
Brief description of the drawings
Fig. 1 is the structure chart for the solar battery sheet that the utility model has high conductivity.
In figure：1- solar battery sheet base materials, the secondary grid line of silver that 2- is printed on base material, 3- main gate lines.
Embodiment
In order to more protrude the purpose of this utility model, technical scheme and advantage, the utility model is carried out with reference to accompanying drawing
Further illustrate, but therefore the utility model is not limited within scope of embodiments.
As shown in figure 1, a kind of solar battery sheet, including solar battery sheet base material 1 and main gate line 3, it is described too
Sun can print the secondary grid line 2 of silver on cell piece base material 1, and the main gate line 3 is to be covered on solar battery sheet base material
Transparent alloy crystal film, be located at the secondary grid line 2 of silver on the same face of solar battery sheet base material 1, direction and silver
Secondary grid line 2 is vertical.
Above-mentioned main gate line 3 is by the dispersion comprising vanadium oxide powder and tin oxide powder in solar battery sheet substrate
On material 1, formed after melting and annealing, the mol ratio of vanadium oxide and tin oxide is 1-2:1, wherein vanadium oxide is analysis
V more than pure2O5And V2O4Mixture, 1 μm of granularity ＜, tin oxide is analyzes the SnO more than pure, 1 μm of granularity ＜, and dispersant is
Organic dispersing agent, preferably volume ratio 1:5 isobutanol and the mixture of phenmethylol.
The preparation method of above-mentioned solar battery sheet is：
（1）The preparation of dispersion liquid：V2O5、V2O4Powder is mixed in proportion with SnO powders, is added by isobutanol and phenmethylol
The dispersant of composition, is sufficiently mixed and dispersion liquid is made.
（2）Spraying：Half tone is laid on solar battery sheet base material 1, the gap of half tone is three, and gap width is
0.5mm, screen thickness is 0.2mm, and solar battery sheet base material 1 is sprayed or be coated in by half tone gap by dispersion liquid
On, the dimension limitation in the gap size of main gate line 3 removes half tone after spraying.
（3）Drying：Solar battery sheet is put into high temperature furnace, in an inert atmosphere, 80 are to slowly warm up to by room temperature
DEG C, kept for 2 minutes, remove the moisture in stove and on solar battery sheet.
（4）Melting：High temperature stove evacuation is filled with containing 10vt%H2Argon gas, air pressure 1000Pa in stove, thermal source irradiation
Solar cell back face, is heated to 700-1000 DEG C, is transferred heat to by the back side scattered in dispersion liquid in top surface, heating process
Agent is volatilized, and alloy powder is fully melted, the heat time >=30s.
（5）Annealing：Solar battery sheet slow cooling annealing after melting, solar battery sheet is in 600- during annealing
700 DEG C of time ＞ 5min, whole annealing process controls temperature between 300-700 DEG C, and alloy molten solution starts slow-set, coagulates
Gu being carried out from alloy molten solution surface to solar cell direction, SnO is partly reduced into tin, the component of tin in weakly reducing atmosphere
It is more to separate out, the tin thin film layer of high conductivity is formed, with silicon formation Ohmic contact, V2O5Largely it is reduced in reducing atmosphere
For V2O4, continue to cool, 100 μm of the vanadium oxide crystal grain ＞ of the rich tin of control, surface separates out tin thickness of thin layer >=10 μm.
（6）Encapsulation：After the completion of annealing, transparent alloy crystal film main gate line is formed on solar battery sheet, in week reduction
With EVA plastic cement covering main gate line part in atmosphere, it is packaged, encapsulation operation is taken out in 150-200 DEG C of progress, cooling, you can.
The utility model is using main gate line of the transparent alloy crystal film as solar battery sheet, it is possible to increase solar-electricity
The photoelectric efficiency in pond, cost is less than the conductive grid line of silver.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, although ginseng
The utility model is described in detail according to previous embodiment, for those skilled in the art, it still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic.It is all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc. should be included in this practicality
Within new protection domain.
Claims (5)
1. a kind of solar battery sheet with high conductivity, including solar battery sheet base material and main gate line, its feature
It is, the secondary grid line of silver is printed on the solar battery sheet base material, and the main gate line is to be covered in solar cell chip base
Transparent alloy crystal film on bottom material, is located on the same face of solar battery sheet base material, side with the secondary grid line of the silver
To vertical with silver-colored secondary grid line.
2. the solar battery sheet according to claim 1 with high conductivity, it is characterised in that the width of the main gate line
Spend for 0.2-1mm, be highly 0.1-2mm.
3. the solar battery sheet according to claim 1 with high conductivity, it is characterised in that the main gate line is by wrapping
The dispersion of material containing vanadium oxide powder and tin oxide powder is on solar battery sheet base material, after melting and annealing
Formed, the dispersant in the dispersion liquid is organic dispersing agent；
The solar battery sheet also includes the printing opacity organic film of covering main gate line.
4. the solar battery sheet according to claim 3 with high conductivity, it is characterised in that the vanadium oxide and oxygen
The mol ratio for changing tin is 1-2:1；
The vanadium oxide is the pure V above of analysis2O5And V2O4Mixture, 1 μm of granularity ＜；
The tin oxide is the pure SnO, 1 μm of granularity ＜ above of analysis；
The organic dispersing agent is volume ratio 1:5 isobutanol and the mixture of phenmethylol；
The printing opacity organic film material includes EVA plastic cement.
5. the solar battery sheet with high conductivity according to claim any one of 1-4, it is characterised in that the conjunction
100 μm of the crystal grain ＞ of gold crystals by adopting film, the top layer of alloy crystal film is the tin thin layer of thickness >=10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720229206.0U CN206505930U (en) | 2017-03-10 | 2017-03-10 | A kind of solar battery sheet with high conductivity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720229206.0U CN206505930U (en) | 2017-03-10 | 2017-03-10 | A kind of solar battery sheet with high conductivity |
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| CN206505930U true CN206505930U (en) | 2017-09-19 |
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| CN201720229206.0U Active CN206505930U (en) | 2017-03-10 | 2017-03-10 | A kind of solar battery sheet with high conductivity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103196A1 (en) * | 2018-11-20 | 2020-05-28 | 成都晔凡科技有限公司 | Cell sheet for imbricate assembly, imbricate assembly, and method for preparing cell sheet |
-
2017
- 2017-03-10 CN CN201720229206.0U patent/CN206505930U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020103196A1 (en) * | 2018-11-20 | 2020-05-28 | 成都晔凡科技有限公司 | Cell sheet for imbricate assembly, imbricate assembly, and method for preparing cell sheet |
| US10998453B2 (en) | 2018-11-20 | 2021-05-04 | Chengdu Yefan Science And Technology Co., Ltd. | Solar cells for shingled solar cell module, shingled solar cell module, and method of making solar cells |
| US10998454B2 (en) | 2018-11-20 | 2021-05-04 | Chengdu Yefan Science And Technology Co., Ltd. | Solar cells for shingled solar cell module, shingled solar cell module, and method of making solar cells |
| US11018268B2 (en) | 2018-11-20 | 2021-05-25 | Chengdu Yefan Science And Technology Co., Ltd. | Solar cells for shingled solar cell module, shingled solar cell module, and method of making solar cells |
| US11018267B2 (en) | 2018-11-20 | 2021-05-25 | Chengdu Yefan Science And Technology Co., Ltd. | Solar cells for shingled solar cell module, shingled solar cell module, and method of making solar cells |
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