CN203760488U - Solar battery piece - Google Patents
Solar battery piece Download PDFInfo
- Publication number
- CN203760488U CN203760488U CN201420066402.7U CN201420066402U CN203760488U CN 203760488 U CN203760488 U CN 203760488U CN 201420066402 U CN201420066402 U CN 201420066402U CN 203760488 U CN203760488 U CN 203760488U
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- Prior art keywords
- solar battery
- battery sheet
- print direction
- distance
- electric field
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Abstract
The utility model discloses a solar battery piece. The solar battery piece comprises a back electric field and at least one back electrode. The back electric field comprises an outer frame and an inner frame. The length of the outer frame in the printing direction is less than the length in the non printing direction. The distance between the outer frame and the edge of the battery piece is less than 0.5mm. According to the utility model, the printing area of the back electric field can be effectively increased, and the electric property of the solar battery piece can be effectively improved.
Description
Technical field
The utility model relates to technical field of solar utilization technique, relates in particular to a kind of solar battery sheet.
Background technology
Develop the consistent approval that regenerative resource has obtained countries in the world, solar energy power generating is emerging generation mode clean, safe, the most with the largest potentiality.Develop solar energy for saving conventional energy, conservation of nature environment, the very important meaning of promoting economic development and uplift the people's living standard.
Solar cell is solar energy to be converted to the semiconductor device of electric energy, is called as photovoltaic in physics.Solar cell, as emerging clean reproducible energy, has life-span length, safeguards the advantages such as simple.At present solar cell fabrication process comprises: cleaning and texturing, diffusion, etching, wash phosphorus, PECVD coated with antireflection film, silk screen printing, sintering etc.Wherein, it is a vital step in solar cell preparation process that electrode is prepared in silk screen printing, and it has not only determined the structure of emitter region, and has determined that the series resistance of battery and battery surface are by plated area.It is to utilize slurry under the squeezing action of scraper, to be penetrated into the half tone with figure that electrode is prepared in silk screen printing, thereby slurry is printed on to the positive back side of silicon chip, to form positive and negative electrode lead-in wire, electric current is effectively exported.
In solar cell, back electrode plays a part to collect electronics and output current voltage, and one of effect of back of the body electric field is the gathering speed that can improve electronics, thereby improves short circuit current and the open circuit voltage of battery; Carry on the back in addition the complex centres such as dangling bonds that electric field can passivation cell surface, improve the photoelectric conversion efficiency of battery.For this reason, the back of the body electric field back electrode structure by suitable design solar cell, to promote cell piece conversion efficiency, is of great importance.
The structure of the solar battery back electric field of prior art, is all that print direction and non-print direction are equidistant, and outer rim and the distance between cell piece edge of back of the body electric field are larger, and this distance is probably 1mm～1.5mm.Yet, printing machine can cause seal limit outwards to expand in actual printing process, and along with the half tone lengthening of service time, half tone tension force can decline gradually, cause half tone to rise and print outwards expansion increasing gradually of limit, the length that the figure printing like this can present print direction is greater than the length of non-print direction, causes the figure printing out asymmetric.In addition, due to solar battery sheet to be generally square and its size fixing, if outer rim and the distance between cell piece edge of back of the body electric field are larger, the effective area that can cause carrying on the back electric field is less, has weakened the electrical property of solar battery sheet.
Utility model content
The purpose of this utility model is for a kind of solar battery sheet is provided, effectively to improve the actual print outward appearance of the cell piece back side electric field of prior art; Increase the printing area of cell piece back side electric field, effectively promote the conversion efficiency of cell piece.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of solar battery sheet, described solar battery sheet comprises back of the body electric field and at least one back electrode, described back of the body electric field comprises outer rim and interior frame, and described outer rim is less than the length in non-print direction in the length of print direction, and the distance at described outer rim and cell piece edge is all less than 0.5mm.
Solar battery sheet of the present utility model, preferably, the distance of described outer rim in described print direction and cell piece edge is greater than in the distance at described non-print direction and cell piece edge.
Solar battery sheet of the present utility model, preferably, described print direction length is 155mm, described non-print direction length is 155.3mm.
Solar battery sheet of the present utility model, preferably, described outer rim is 0.5mm in the distance of described print direction and cell piece frame, described outer rim is 0.35mm in the distance of described non-print direction and cell piece frame.
Solar battery sheet of the present utility model, preferably, described at least one back electrode is list structure, be evenly arranged in parallel each other.
Solar battery sheet of the present utility model, preferably, described in each, back electrode at least comprises two sub-electrode sections, described in each, in back electrode, the distance between two adjacent sub-electrode sections equates.
Solar battery sheet of the present utility model, preferably, described back electrode is 4.
Solar battery sheet of the present utility model, preferably, described in each, back electrode comprises 4 sub-electrode sections.
Solar battery sheet of the present utility model, preferably, described interior frame and described back electrode match, be arranged at around described back electrode, comprise frame in many strips, in each son, frame comprises a plurality of sub-segmentations, and the width of locating that described in each, sub-segmentation and described back electrode have a common boundary is 2.2mm, and length is 12.1mm.
Solar battery sheet of the present utility model, preferably, the distance of two adjacent sub-segmentations in described a plurality of sub-segmentations between print direction is 36.8mm, the distance between non-print direction is 29.4mm.
The beneficial effects of the utility model are, solar battery sheet of the present utility model, by increasing the length of non-print direction, not only having solved print direction in actual print process can increase and cause carrying on the back the asymmetric problem of electric field, but also effectively increased the printing area of carrying on the back electric field, promoted the electrical property of solar battery sheet.By dwindling the distance between back of the body electric field outer rim and cell piece edge, also can effectively improve actual print effect, make back of the body electric field pattern in reality in print direction and with the length of non-print direction about equally, and can effectively increase the printing area of carrying on the back electric field, thereby effectively promote the electrical property of solar battery sheet.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of back of the body electric field of the solar battery sheet of the utility model the first embodiment.
Fig. 2 is the schematic diagram of back of the body electric field of the solar battery sheet of the utility model the second embodiment.
Embodiment
The exemplary embodiments that embodies the utility model feature & benefits will describe in detail in the following description.Be understood that the utility model can have various variations on different embodiment, it neither departs from scope of the present utility model, and explanation wherein and accompanying drawing be when the use that explain in itself, but not in order to limit the utility model.
The figure of the back of the body electric field of solar battery sheet of the present utility model can decide by half tone figure, and the graphic designs by half tone can print out the back of the body electric field with different graphic and size.
Lower mask body is introduced the solar battery sheet of the utility model preferred embodiment.
As shown in Figures 1 and 2, the solar battery sheet of the utility model the first embodiment comprises back of the body electric field and back electrode.
Wherein, back electrode is 4, is list structure, is evenly arranged in parallel each other, and back electrode has the structure matching with back of the body electric field.Every back electrode is divided into 4 sub-electrode sections 4, and the distance between two adjacent sub-electrode sections 4 in each back electrode equates.The raised section 42 that sub-electrode section 4 comprises body 41 and protrudes from body.
Back electrode is printed on frame 3 inside in back of the body electric field, and the sub-segmentation 311 of body 41 distance has certain distance, for example, be 0.3mm.And the raised section 42 at sub-electrode section 4 edges is 0.5mm, exceed the edge of sub-segmentation 311, and superpose with back of the body electric field, after sintering, form alloy, the electric current of collecting by back of the body electric field so just can be derived by back electrode.Therefore, the back of the body electric field of the solar battery sheet of the utility model the first embodiment and back electrode are formed with the structure of subregion stack, are beneficial to conduction.
Back of the body electric field comprises outer rim 1 and interior frame 3, and interior frame 3 has the four grid four-part form designs that match with back electrode.
Outer rim 1 is less than in the length of non-print direction Y in the length of print direction X, even if exist thus printing machine in printing real process, can cause seal limit outwards to expand, and along with the half tone lengthening of service time, half tone tension force can decline gradually, can cause printing limit and outwards expand the problem strengthening gradually, the outer rim 1 of the utility model the first embodiment also can be about equally in the length of print direction and non-print direction, not only can make thus to carry on the back the figure printing out on electric field more symmetrical, improved printing outward appearance, also can effectively expand the printing area of back of the body electric field simultaneously, effectively promote the conversion efficiency of cell piece.
Particularly, outer rim 1 can be set to 155mm in the length of print direction X, in non-print direction length, can be set to 155.3mm, but the utility model is not as limit, according to practical situations, also outer rim 1 can be set to respectively to other values in print direction X and with the length of non-print direction Y.
Interior frame 3 matches with back electrode, is arranged at around back electrode, comprises frame 31 in many strips, and in each son, frame comprises a plurality of sub-segmentations 311.Particularly, in the present embodiment, the number of interior frame 31 is 4, and the number of sub-segmentation 311 is 4, and every sub-segmentation 311 is 2.2mm with the width (directions X) of back electrode intersection, and length (Y-direction) is 12.1mm.And in every strip, frame 31 is list structure, is evenly arranged in parallel each other, for example in adjacent two strips, the distance between frame 31 is 36.8mm.4 sub-segmentations 311 in every strip in frame 31 are also mutually evenly distributed, and for example the distance between adjacent two sub-segmentations 311 is 29.4mm.But the utility model is not as limit, according to the difference of the back electrode that will mate, in the back of the body electric field of the utility model the first embodiment, the structure of frame 3 also can adjust accordingly, and the distance in adjacent two strips between frame 31 and the distance between adjacent two sub-segmentations 311 also can be set to respectively other values.
In addition, the solar battery sheet of the utility model the first embodiment also has fillet 11, the profile that is different from traditional solar battery sheet be one strict square.
As shown in Figure 2, the solar battery sheet of the utility model the second embodiment comprises back of the body electric field and back electrode.The solar battery sheet of the utility model the second embodiment has the similar structure of solar battery sheet with the utility model the first embodiment, its something in common, do not repeat them here, difference is, the outer rim 1 of the solar battery sheet of the utility model the second embodiment has the structure different from the outer rim 1 of the first embodiment.Particularly, the distance of the outer rim 1 of the solar battery sheet of the utility model the second embodiment in print direction X and cell piece edge 2 is greater than in the distance at non-print direction Y and cell piece edge 2, and outer rim 1 is less than 1mm with the distance at cell piece edge 2.
The solar battery sheet of the utility model the second embodiment, by reducing to carry on the back the outer rim 1 of electric field and the distance between cell piece edge 2, has effectively increased the printing of back of the body electric field, has promoted the electrical property of solar battery sheet.Concrete, the distance of outer rim 1 between print direction X and cell piece edge 2 is decreased to 0.5mm, the distance of outer rim 1 between non-print direction Y and cell piece edge 2 is decreased to 0.35mm, in addition, the distance between outer rim 1 and cell piece edge 2 is reduced to 0.35mm and just in time also can cause solar battery sheet electric leakage.But the utility model, not as limit, according to practical situations, also can be set to respectively other values in print direction X and with the length of non-print direction Y by outer rim 1.
In sum, the solar battery sheet of the utility model the various embodiments described above, by increasing the length of non-print direction, not only having solved print direction in actual print process can increase and cause carrying on the back the asymmetric problem of electric field, but also effectively increased the printing area of carrying on the back electric field, promoted the electrical property of solar battery sheet.By dwindling the distance between back of the body electric field outer rim and cell piece frame, also can effectively improve actual print effect, make back of the body electric field pattern in reality in print direction and with the length of non-print direction about equally, and can effectively increase the printing area of carrying on the back electric field, thereby effectively promote the electrical property of solar battery sheet.
Those skilled in the art should recognize in the situation that do not depart from change and the retouching that scope and spirit of the present utility model that the appended claim of the utility model discloses are done, within all belonging to the protection range of claim of the present utility model.
Claims (10)
1. a solar battery sheet, described solar battery sheet comprises back of the body electric field and at least one back electrode, it is characterized in that, described back of the body electric field comprises outer rim and interior frame, described outer rim is less than the length in non-print direction in the length of print direction, and the distance at described outer rim and cell piece edge is all less than 0.5mm.
2. solar battery sheet as claimed in claim 1, is characterized in that, the distance of described outer rim in described print direction and cell piece edge is greater than in the distance at described non-print direction and cell piece edge.
3. solar battery sheet as claimed in claim 1, is characterized in that, described print direction length is 155mm, and described non-print direction length is 155.3mm.
4. solar battery sheet as claimed in claim 2, is characterized in that, described outer rim is 0.5mm in the distance of described print direction and cell piece frame, and described outer rim is 0.35mm in the distance of described non-print direction and cell piece frame.
5. solar battery sheet as claimed in claim 1 or 2, is characterized in that, described at least one back electrode is list structure, is evenly arranged in parallel each other.
6. solar battery sheet as claimed in claim 5, is characterized in that, described in each, back electrode at least comprises two sub-electrode sections, and described in each, in back electrode, the distance between two adjacent sub-electrode sections equates.
7. solar battery sheet as claimed in claim 6, is characterized in that, described back electrode is 4.
8. solar battery sheet as claimed in claim 6, is characterized in that, described in each, back electrode comprises 4 sub-electrode sections.
9. solar battery sheet as claimed in claim 6, it is characterized in that, described interior frame and described back electrode match, be arranged at around described back electrode, comprise frame in many strips, in each son, frame comprises a plurality of sub-segmentations, and the width of locating that described in each, sub-segmentation and described back electrode have a common boundary is 2.2mm, and length is 12.1mm.
10. solar battery sheet as claimed in claim 9, is characterized in that, the distance of two adjacent sub-segmentations in described a plurality of sub-segmentations between print direction is 36.8mm, and the distance between non-print direction is 29.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066402.7U CN203760488U (en) | 2014-02-14 | 2014-02-14 | Solar battery piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066402.7U CN203760488U (en) | 2014-02-14 | 2014-02-14 | Solar battery piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203760488U true CN203760488U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066402.7U Expired - Fee Related CN203760488U (en) | 2014-02-14 | 2014-02-14 | Solar battery piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203760488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047733A (en) * | 2015-07-13 | 2015-11-11 | 苏州阿特斯阳光电力科技有限公司 | Back electrode structure of multi-busbars solar cell |
| CN107910384A (en) * | 2017-11-29 | 2018-04-13 | 江苏彩虹永能新能源有限公司 | A kind of more main grid solar cells |
-
2014
- 2014-02-14 CN CN201420066402.7U patent/CN203760488U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047733A (en) * | 2015-07-13 | 2015-11-11 | 苏州阿特斯阳光电力科技有限公司 | Back electrode structure of multi-busbars solar cell |
| CN107910384A (en) * | 2017-11-29 | 2018-04-13 | 江苏彩虹永能新能源有限公司 | A kind of more main grid solar cells |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170615 Granted publication date: 20140806 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20190615 Granted publication date: 20140806 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20200214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |