CN203277406U - Novel large-back field solar cell sheet - Google Patents
Novel large-back field solar cell sheet Download PDFInfo
- Publication number
- CN203277406U CN203277406U CN 201320333180 CN201320333180U CN203277406U CN 203277406 U CN203277406 U CN 203277406U CN 201320333180 CN201320333180 CN 201320333180 CN 201320333180 U CN201320333180 U CN 201320333180U CN 203277406 U CN203277406 U CN 203277406U
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- electric field
- solar cell
- cell sheet
- novel large
- solar battery
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Abstract
A novel large-back field solar cell sheet is provided. The novel large-back field solar cell sheet includes a back electric field; back electrode grid lines are arranged on the back electric field; the length and width of the back electric field are both 125mm; and the diagonal length of the back electric field is 164mm. According to the novel large-back field solar cell sheet of the utility model, the printing area of the back electric field is increased based on an original basis, such that light absorption of the solar cell sheet can be increased, and open-circuit voltage and current of the solar cell sheet can be improved, and therefore, the conversion efficiency of the solar cell sheet can be improved.
Description
Technical field
The utility model relates to a kind of solar battery sheet of back surface field, especially a kind of solar battery sheet of novel large back surface field.
Background technology
Silkscreen process is one indispensable critical process in the middle of the solar battery sheet production process, and the printing of wherein carrying on the back electric field mainly forms the P+P interface, increases few sub-diffusivity, improves open circuit voltage; To long wave〉1000nm light has reflex, increases short circuit current; Collect the photoproduction minority carrier at the back side.Therefore carry on the back electric field bedding area larger, more favourable to raising the efficiency.The slurry that present back of the body electric field uses substantially all is aluminium paste, relate to fragment rate, that the shared length of sides of the printing factors printing such as fraction defective generally are 123mm is even shorter, area is less, the shortcoming of this structure is, the bedding area is little, has affected the conversion efficiency of cell piece.
The utility model content
The utility model will solve the shortcoming of above-mentioned prior art, and a kind of solar battery sheet of novel large back surface field is provided, and has satisfied the conversion efficiency demand that promotes cell piece.
The utility model solves the technical scheme that its technical problem adopts: the solar battery sheet of this novel large back surface field, comprise back of the body electric field, be provided with the back electrode grid line on back of the body electric field, length and the width of back of the body electric field are all 125mm, and the diagonal angle length of back of the body electric field is 164mm.
For further perfect, back electrode grid line length is 20.5mm.Back electrode grid line width is 2mm.Be 21.8mm between vertical between adjacent back electrode grid line.
The effect that the utility model is useful is: large back surface field purpose of the present utility model is to increase the printing area of back of the body electric field on original basis, to increase solar battery sheet to Optical Absorption, improve open circuit voltage and the electric current of solar battery sheet, thereby promote the conversion efficiency of cell piece.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals: back of the body electric field 1, back electrode grid line 2.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
With reference to accompanying drawing: the solar battery sheet of this novel large back surface field, comprise back of the body electric field 1, be provided with back electrode grid line 2 on back of the body electric field 1, length L and the width W of back of the body electric field 1 are all 125mm, and the diagonal angle length X of back of the body electric field 1 is 164mm.Back electrode grid line 2 length A are 20.5mm.Back electrode grid line 2 width B are 2mm.2 longitudinal separation C of adjacent back electrode grid line are 21.8mm.
Large back surface field purpose of the present utility model is to increase the printing area of back of the body electric field on original basis, to increase solar battery sheet to Optical Absorption, improve open circuit voltage and the electric current of solar battery sheet, thereby promotes the conversion efficiency of cell piece.
Although the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and details.
Claims (4)
1. the solar battery sheet of a novel large back surface field, comprise back of the body electric field (1), be provided with back electrode grid line (2) on back of the body electric field (1), it is characterized in that: length (L) and the width (W) of described back of the body electric field (1) are all 125mm, and the diagonal angle length (X) of back of the body electric field (1) is 164mm.
2. the solar battery sheet of novel large back surface field according to claim 1 is characterized in that: described back electrode grid line (2) length (A) is 20.5mm.
3. the solar battery sheet of novel large back surface field according to claim 1, it is characterized in that: described back electrode grid line (2) width (B) is 2mm.
4. the solar battery sheet of novel large back surface field according to claim 1 is characterized in that: between described adjacent back electrode grid line (2), longitudinal separation (C) is 21.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320333180 CN203277406U (en) | 2013-06-09 | 2013-06-09 | Novel large-back field solar cell sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320333180 CN203277406U (en) | 2013-06-09 | 2013-06-09 | Novel large-back field solar cell sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203277406U true CN203277406U (en) | 2013-11-06 |
Family
ID=49507754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320333180 Expired - Fee Related CN203277406U (en) | 2013-06-09 | 2013-06-09 | Novel large-back field solar cell sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203277406U (en) |
-
2013
- 2013-06-09 CN CN 201320333180 patent/CN203277406U/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 | ||
| 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: 20131106 Termination date: 20190609 |