CN201616439U - Back electrode of polysilicon solar battery - Google Patents
Back electrode of polysilicon solar battery Download PDFInfo
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- CN201616439U CN201616439U CN2010201388717U CN201020138871U CN201616439U CN 201616439 U CN201616439 U CN 201616439U CN 2010201388717 U CN2010201388717 U CN 2010201388717U CN 201020138871 U CN201020138871 U CN 201020138871U CN 201616439 U CN201616439 U CN 201616439U
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- back electrode
- electrode
- polysilicon solar
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims abstract description 14
- 229920005591 polysilicon Polymers 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of polysilicon solar batteries, in particular to a back electrode of a polysilicon solar battery. The back electrode is in a bar shape; the distances from the identical terminals of the back electrodes to the edge of a battery plate are equal, and the distances from the two terminals of the back electrodes to the edge of the battery plate are not equal, namely the back electrode adopts asymmetrical design; additionally, the width and quantity of the electrodes are different according to the requirement. Compared with the battery plate produced by adopting symmetrical back electrodes, the back electrode has the advantages that when the polysilicon solar battery is produced by adopting the asymmetrical back electrodes, the unit consumption of pulp adopted during back electrode printing is reduced, and the power of a component is improved after the back electrodes are encapsulated to form the component of the solar battery.
Description
Technical field
The utility model relates to the back electrode of polysilicon solar cell technical field, particularly polysilicon solar cell.
Background technology
Present 156 polycrystalline back electrodes mainly design with whole symmetrical structure, the symmetrical structure design is comparatively convenient for the technology controlling and process in the production process, need not to consider the influence of directivity to battery production, but the type design slurry unit consumption is higher, the battery production cost is higher, as shown in Figure 1 be the back electrode of 156 polycrystal silicon cells of symmetrical expression, its long 130 ± 20mm that is generally, the width of electrode and radical are different because of needs, the distance at two end distance battery sheet edges of every back electrode equates, also is symmetric design; Perhaps the back electrode of polysilicon solar cell adopts and buries the grid structure, the type design can be played electron collection effect preferably, but such structural design is higher to production technology and equipment requirements, need purchase very expensive production equipment, technical process is very complicated, is unfavorable for large-scale production.
The utility model content
Technical problem to be solved in the utility model is: reduce back electrode slurry unit consumption, when reducing the battery production cost, improve component package power.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of back electrode of polysilicon solar cell, this back electrode is bar shaped, the end of the same end of every this back electrode equates apart from the distance at the edge of battery sheet, the end at the two ends of every this back electrode is unequal apart from the distance at the edge of battery sheet, be asymmetric design, electrode width and radical are different because of need in addition.
The length of 156 polycrystalline back electrodes of symmetrical expression is generally 130 ± 20mm, the contraction in length of back electrode is 110 ± 25mm in the utility model, back electrode prints employed slurry unit consumption and reduces by 15 ± 3%, be packaged into solar module after, component power increases by 1 ± 0.3%.This mainly is because of after shortening back electrode, and the long-pending corresponding increase of aluminium back of the body scene more helps the collection of light induced electron, carries on the back the long-pending increase of scene simultaneously, and the corresponding raising of the passivation effect of BSF causes efficient to rise.
Concrete, the length of back electrode is 117mm, and the distance at electrode two end distance battery sheet edges is respectively 11mm and 28mm, and the width of electrode is 4mm, and radical is 3.
Perhaps, the length of back electrode is 112mm, and the distance at electrode two end distance battery sheet edges is respectively 10mm and 34mm, and the width of electrode is 4mm, and radical is 3.
The beneficial effects of the utility model are: compare with the battery sheet that adopts the production of symmetric design back electrode, when adopting this asymmetric back electrode to produce polycrystalline silicon solar cell, back electrode prints employed slurry unit consumption to be reduced, be packaged into solar module after, component power increases.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
The structural representation of the original back electrode of Fig. 1.
The structural representation of Fig. 2 back electrode of the present utility model.
Among the figure, 1, back electrode.
Embodiment
Example one: back electrode 1 design length is 117mm, and the distance at electrode two end distance battery sheet edges is respectively 11mm and 28mm, and the electrode design width is 4mm, and radical is 3.Compare symmetrical back electrode 1 design of 136mm length, under same design width and radical, the monolithic battery sheet slurry consumption of printing back electrode 1 reduces by 14.0%, and when using identical component package raw material, the power of solar module increases by 0.9%.
Example two: back electrode 1 design length is 112mm, and the distance at electrode two end distance battery sheet edges is respectively 10mm and 34mm, and the electrode design width is 4mm, and radical is 2.Compare symmetrical back electrode 1 design of 136mm length, under same design width and radical, the monolithic battery sheet slurry consumption of printing back electrode 1 reduces by 17.6%, and when using identical component package raw material, the power of solar module increases by 1.1%.
Claims (4)
1. the back electrode of a polysilicon solar cell, this back electrode (1) is bar shaped, it is characterized in that: the end of the same end of every this back electrode (1) equates that apart from the distance at the edge of battery sheet the end at the two ends of every this back electrode (1) is unequal apart from the distance at the edge of battery sheet.
2. the back electrode of polysilicon solar cell according to claim 1, it is characterized in that: the length of described back electrode (1) is 110 ± 25mm.
3. the back electrode of polysilicon solar cell according to claim 2, it is characterized in that: the length of described back electrode (1) is 117mm, and the distance at electrode two end distance battery sheet edges is respectively 11mm and 28mm, and the width of electrode is 4mm, and radical is 3.
4. the back electrode of polysilicon solar cell according to claim 2, it is characterized in that: the length of described back electrode (1) is 112mm, and the distance at electrode two end distance battery sheet edges is respectively 10mm and 34mm, and the width of electrode is 4mm, and radical is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201388717U CN201616439U (en) | 2010-03-17 | 2010-03-17 | Back electrode of polysilicon solar battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201388717U CN201616439U (en) | 2010-03-17 | 2010-03-17 | Back electrode of polysilicon solar battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616439U true CN201616439U (en) | 2010-10-27 |
Family
ID=43002803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201388717U Expired - Fee Related CN201616439U (en) | 2010-03-17 | 2010-03-17 | Back electrode of polysilicon solar battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178130A (en) * | 2011-12-23 | 2013-06-26 | 浚鑫科技股份有限公司 | Electrode of crystalline silicon solar cell |
-
2010
- 2010-03-17 CN CN2010201388717U patent/CN201616439U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178130A (en) * | 2011-12-23 | 2013-06-26 | 浚鑫科技股份有限公司 | Electrode of crystalline silicon solar cell |
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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: TRINASOLAR Co.,Ltd. Address before: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: trina solar Ltd. |
|
| 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: 213031, No. 2, Tianhe Road, Xinbei Industrial Park, Jiangsu, Changzhou Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20180317 |