CN202134541U - Back electrodes of polysilicon solar energy cell - Google Patents
Back electrodes of polysilicon solar energy cell Download PDFInfo
- Publication number
- CN202134541U CN202134541U CN201120218188U CN201120218188U CN202134541U CN 202134541 U CN202134541 U CN 202134541U CN 201120218188 U CN201120218188 U CN 201120218188U CN 201120218188 U CN201120218188 U CN 201120218188U CN 202134541 U CN202134541 U CN 202134541U
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- back electrodes
- back electrode
- polysilicon solar
- solar energy
- utility
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Abstract
The utility model discloses back electrodes of a polysilicon solar energy cell. Bar shaped back electrodes of slice aluminium paste are adopted; the distances between the two ends of the back electrodes and corresponding edges of a cell piece are not equal; the number of the back electrodes are more than one; the distances between all the same ends of the back electrodes and the same edges of the cell piece are equal; and the difference scope of the distances between the two ends of the back electrodes and the corresponding edges of the cell piece is 15mm to 25 mm. The back electrodes of a polysilicon solar energy cell provided by the utility model, compared with the cell piece produced by a back electrode of symmetrical design, reduce unit consumption of slurry used by printing, and increase the power of a packaged solar energy cell assembly.
Description
Technical field
The utility model relates to the polysilicon solar cell technology, relates in particular to a kind of back electrode of polysilicon solar cell.
Background technology
At present; The back electrode of 156 polycrystalline silicon solar cells mainly designs 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, higher but the type relates to the slurry unit consumption, the production cost of battery is higher.The back electrode of 156 polysilicon solar cells that use now, its length is generally 130 ± 20mm, and the width of electrode and radical are different because of needs, and the distance at two end cell 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 relates to can play 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
Goal of the invention: in order to overcome the deficiency that exists in the prior art, the utility model provides the back electrode of the few polysilicon solar cell of a kind of slurry unit consumption.
Technical scheme: for solving the problems of the technologies described above, the technical scheme of the utility model sampling is:
A kind of back electrode of polysilicon solar cell; Adopt the bar shaped back electrode of thin slice aluminium paste; Its two ends are unequal apart from the distance of battery sheet respective edges, and the radical of said back electrode is more than one, and the same side of all back electrodes equates apart from the distance of battery sheet same edge.
The two ends of said back electrode are that 15mm is to 25mm apart from the distance scope of differing of battery sheet respective edges.
The length of the back electrode of 156 polysilicon solar cells of symmetrical expression is generally 130 ± 20mm, through this programme design, can reduce length to the 110 ± 20mm of back electrode; Like this, back electrode prints employed slurry unit consumption can reduce by 15% effect, and this mainly is because after shortening back electrode; The corresponding increase of area of the aluminium back of the body; Help the collection of light induced electron more, a back of the body area increases simultaneously, and the corresponding raising of the passivation effect of BSF causes efficient to rise.
Beneficial effect: the back electrode of the polysilicon solar cell that the utility model provides, compare with the battery sheet of the back electrode production of adopting symmetric design, print employed slurry unit consumption and reduce, the power of the solar module that is packaged into increases.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done explanation further.
Be depicted as a kind of back electrode 1 of 156 polysilicon solar cells like accompanying drawing 1; Adopt the bar shaped back electrode 1 of thin slice aluminium paste; Its two ends are unequal apart from the distance of battery sheet respective edges; The radical of said back electrode 1 is four, and the same side of all back electrodes 1 equates apart from the distance of battery sheet same edge; The length of said back electrode 1 is 115mm, and back electrode 1 two ends are respectively 10mm and 31mm apart from battery sheet Edge Distance.
The above only is the preferred implementation of the utility model; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (2)
1. the back electrode of a polysilicon solar cell; It is characterized in that: said back electrode is for adopting the bar shaped back electrode of thin slice aluminium paste; Its two ends are unequal apart from the distance of battery sheet respective edges; The radical of said back electrode is more than one, and the same side of all back electrodes equates apart from the distance of battery sheet same edge.
2. the back electrode of polysilicon solar cell according to claim 1, it is characterized in that: the two ends of said back electrode are that 15mm is to 25mm apart from the distance scope of differing of battery sheet respective edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120218188U CN202134541U (en) | 2011-06-26 | 2011-06-26 | Back electrodes of polysilicon solar energy cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120218188U CN202134541U (en) | 2011-06-26 | 2011-06-26 | Back electrodes of polysilicon solar energy cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202134541U true CN202134541U (en) | 2012-02-01 |
Family
ID=45523303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120218188U Expired - Fee Related CN202134541U (en) | 2011-06-26 | 2011-06-26 | Back electrodes of polysilicon solar energy cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202134541U (en) |
-
2011
- 2011-06-26 CN CN201120218188U patent/CN202134541U/en not_active Expired - Fee Related
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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: 20120201 Termination date: 20130626 |