CN102810577A - Hybrid back electrode cell - Google Patents
Hybrid back electrode cell Download PDFInfo
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- CN102810577A CN102810577A CN2012102851818A CN201210285181A CN102810577A CN 102810577 A CN102810577 A CN 102810577A CN 2012102851818 A CN2012102851818 A CN 2012102851818A CN 201210285181 A CN201210285181 A CN 201210285181A CN 102810577 A CN102810577 A CN 102810577A
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- hybrid
- back electrode
- battery sheet
- silver paste
- cell
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Abstract
The invention relates to a hybrid back electrode cell. The hybrid back electrode cell comprises a cell body, wherein a back electrode is arranged on one side of the cell body and a positive electrode is arranged on the other side of the cell body. The hybrid back electrode cell is characterized in that a hybrid silver paste layer is distributed on the back electrode of the cell. The conventional silver back electrode paste is replaced by the hybrid silver paste layer for screen printing, so that the integral cell performance of the cell is improved; based on presence of the hybrid silver paste layer, the using amount of silver paste can be effectively reduced and the manufacturing cost of the cell can be significantly reduced; and the hybrid back electrode cell is easy to popularize.
Description
Technical field
The present invention relates to a kind of battery sheet, relate in particular to a kind of hybrid back electrode battery sheet.
Background technology
The crystal silicon solar batteries industrialization technology is very ripe at present, yet compares with conventional energy resource, and the higher relatively manufacturing cost of silicon solar cell has restricted its development to a great extent.In order to reduce battery sheet manufacturing cost, carried out a large amount of improvement work in the industry.
In existing battery sheet manufacturing process, the use cost that the battery sheet contains silver paste accounts for more than 60% of entire cell sheet manufacturing cost.So how under the prerequisite that guarantees battery sheet conversion efficiency, reduce the consumption of silver, can reduce battery sheet manufacturing cost to a great extent.For the backplate of battery sheet, it mainly act as transmission current and is convenient to the assembly series welding.Owing to need not to collect photogenerated current as front electrode, grid line, in the existing relative positive electrode silver paste of back electrode silver paste, the solid content of silver is lower.
Thus, the silver paste cost is high, and whole electric property can't effectively be promoted again.
Summary of the invention
The object of the invention is exactly the problems referred to above that exist in the prior art in order to solve, and a kind of hybrid back electrode battery sheet is provided.
The object of the invention is realized through following technical scheme:
A kind of hybrid back electrode battery sheet includes battery sheet body, and a side of described battery sheet body is a back electrode, and the opposite side of said battery sheet body is a positive electrode, wherein: be distributed with hybrid silver paste layer on the backplate of said battery sheet.
Further, above-mentioned a kind of hybrid back electrode battery sheet, wherein: described hybrid silver paste layer includes the metallic particles particle, and described metallic particles particle is wrapped with the silver paste layer.
Further, above-mentioned a kind of hybrid back electrode battery sheet, wherein: described metallic particles particle diameter is 5 to 100 nanometers.
Further, above-mentioned a kind of hybrid back electrode battery sheet, wherein: the thickness of described hybrid silver paste layer is 0.1 to 1 millimeter.
Again further, above-mentioned a kind of hybrid back electrode battery sheet, wherein: the thickness of described hybrid silver paste layer is 0.5 millimeter.
The advantage of technical scheme of the present invention is mainly reflected in: substitute traditional silver-colored back electrode slurry through hybrid silver paste layer and carry out silk screen printing, improve battery sheet integral battery door performance.And, rely on the existence of hybrid silver paste layer, can effectively deduct the use of silver paste, can significantly reduce battery sheet manufacturing cost, be easy to promote.
Description of drawings
The object of the invention, advantage and characteristics will illustrate through the non-limitative illustration of following preferred embodiment and explain.These embodiment only are the prominent examples of using technical scheme of the present invention, and all technical schemes of taking to be equal to replacement or equivalent transformation and forming all drop within the scope of requirement protection of the present invention.In the middle of these accompanying drawings,
Fig. 1 is the organigram of this hybrid back electrode battery sheet.
1 battery sheet body, 2 back electrodes
3 positive electrodes, 4 metallic particles particles
5 silver paste layers
Embodiment
A kind of hybrid back electrode battery sheet as shown in Figure 1 includes battery sheet body 1, and a side of this battery sheet body 1 is a back electrode 2.Corresponding with it is, is positive electrode 3 at the opposite side of battery sheet body 1, and its special feature is: be distributed with hybrid silver paste layer 5 on the backplate of the battery sheet that the present invention adopted.
With regard to the present invention's one preferred implementation, in order to satisfy good electrical conductivity, can certain intermiscibility be arranged with tin bar again simultaneously, the hybrid silver paste layer 5 of employing includes metallic particles particle 4.And, for the electric property of effectively lifting integral body, and all in actual manufacturing, reduce silver-colored consumption in the battery manufacturing largely, be wrapped with silver paste layer 5 at metallic particles particle 4.
Further, consider the manufacturing needs of different size, metallic particles particle 4 diameters of employing are 5 to 100 nanometers.Thus, can in the preparation process, be unlikely to cause hybrid silver paste layer 5 integral body too coarse, the thickness of the hybrid silver paste layer 5 of employing be 0.1 to 1 millimeter.Certainly, from repeatedly contrast realization discovery, in the preparation process of reality, the thickness of hybrid silver paste layer 5 is 0.5 millimeter, can satisfy the demand.
Again further, in the manufacture process of reality, the metallic particles particle 4 of employing can adopt copper or aluminium as main material, does not also get rid of other metal materials certainly.Like this, can realize combining of hybrid silver paste layer 5 and backplate through silk screen printing.
P type polysilicon chip battery production for 156 * 156 square millimeters; Replace conventional silver-colored back electrode slurry with the silver-colored copper-clad back electrode slurry of copper content 50% and carry out silk screen printing; Carry out sintering after the debugging sintering temperature; The conversion efficiency, fill factor, curve factor, open circuit voltage, the short circuit current that record this solar battery sheet are respectively 16.75%, 78.11,619 millivolt, 8.43 amperes, remain basically stable with the existing parameters of the battery sheet of conventional silver-colored back electrode slurry printing of using.Behind this electrode welding welding, the assembly tensile test is average＞5N, meet assembly tensile test standard-required.
For 156 * 156 square millimeters P type polysilicon chips through conventional battery production technology; The silver-colored copper-clad back electrode slurry of employing copper content 70% replaces conventional silver-colored back electrode slurry and carries out silk screen printing; Carry out sintering after the debugging sintering temperature; The conversion efficiency, fill factor, curve factor, open circuit voltage, the short circuit current that record this solar battery sheet are respectively 16.73%, 78.09,619 millivolt, 8.40 amperes, remain basically stable with the existing parameters of the battery sheet of conventional silver-colored back electrode slurry printing of using.Behind this electrode welding welding, the assembly tensile test is average＞4.5N, meet assembly tensile test standard-required.
Can find out through above-mentioned character express, behind employing the present invention, substitute traditional silver-colored back electrode slurry through hybrid silver paste layer and carry out silk screen printing, improve battery sheet integral battery door performance.And, rely on the existence of hybrid silver paste layer, can effectively deduct the use of silver paste, can significantly reduce battery sheet manufacturing cost, be easy to promote.
Claims (5)
1. hybrid back electrode battery sheet; Include battery sheet body; One side of described battery sheet body is a back electrode, and the opposite side of said battery sheet body is a positive electrode, it is characterized in that: be distributed with hybrid silver paste layer on the backplate of said battery sheet.
2. a kind of hybrid back electrode battery sheet according to claim 1, it is characterized in that: described hybrid silver paste layer includes the metallic particles particle, and described metallic particles particle is wrapped with the silver paste layer.
3. a kind of hybrid back electrode battery sheet according to claim 2, it is characterized in that: described metallic particles particle diameter is 5 to 100 nanometers.
4. a kind of hybrid back electrode battery sheet according to claim 1, it is characterized in that: the thickness of described hybrid silver paste layer is 0.1 to 1 millimeter.
5. a kind of hybrid back electrode battery sheet according to claim 4, it is characterized in that: the thickness of described hybrid silver paste layer is 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102851818A CN102810577A (en) | 2012-08-13 | 2012-08-13 | Hybrid back electrode cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102851818A CN102810577A (en) | 2012-08-13 | 2012-08-13 | Hybrid back electrode cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102810577A true CN102810577A (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102851818A Pending CN102810577A (en) | 2012-08-13 | 2012-08-13 | Hybrid back electrode cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325856A (en) * | 2013-05-31 | 2013-09-25 | 深圳市圣龙特电子有限公司 | Copper electrode solar battery piece and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330615A (en) * | 1995-05-30 | 1996-12-13 | Canon Inc | Series solar cell and manufacture thereof |
| CN1147157A (en) * | 1995-06-28 | 1997-04-09 | 佳能株式会社 | Photovoltaic cell and method of making the same |
| CN102148264A (en) * | 2010-12-30 | 2011-08-10 | 袁晓 | Silicon solar battery with wire electrode and manufacturing method thereof |
| CN102280160A (en) * | 2011-08-18 | 2011-12-14 | 陈晓东 | Conductive paste for back electrode of silicon solar cell and preparation method of conductive paste |
| CN102569438A (en) * | 2012-01-31 | 2012-07-11 | 乐山职业技术学院 | Solar cell capable of saving silver paste and preparation process thereof |
| CN202905725U (en) * | 2012-08-13 | 2013-04-24 | 中利腾晖光伏科技有限公司 | Hybrid back electrode cell piece |
-
2012
- 2012-08-13 CN CN2012102851818A patent/CN102810577A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330615A (en) * | 1995-05-30 | 1996-12-13 | Canon Inc | Series solar cell and manufacture thereof |
| CN1147157A (en) * | 1995-06-28 | 1997-04-09 | 佳能株式会社 | Photovoltaic cell and method of making the same |
| CN102148264A (en) * | 2010-12-30 | 2011-08-10 | 袁晓 | Silicon solar battery with wire electrode and manufacturing method thereof |
| CN102280160A (en) * | 2011-08-18 | 2011-12-14 | 陈晓东 | Conductive paste for back electrode of silicon solar cell and preparation method of conductive paste |
| CN102569438A (en) * | 2012-01-31 | 2012-07-11 | 乐山职业技术学院 | Solar cell capable of saving silver paste and preparation process thereof |
| CN202905725U (en) * | 2012-08-13 | 2013-04-24 | 中利腾晖光伏科技有限公司 | Hybrid back electrode cell piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325856A (en) * | 2013-05-31 | 2013-09-25 | 深圳市圣龙特电子有限公司 | Copper electrode solar battery piece and manufacturing method thereof |
| CN103325856B (en) * | 2013-05-31 | 2016-06-29 | 深圳市圣龙特电子有限公司 | A kind of copper electrode solar battery sheet and manufacture method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20121205 |