CN103400870A - Solar cell, electrode pattern design thereof and solar cell assembly - Google Patents
Solar cell, electrode pattern design thereof and solar cell assembly Download PDFInfo
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- CN103400870A CN103400870A CN2013103355379A CN201310335537A CN103400870A CN 103400870 A CN103400870 A CN 103400870A CN 2013103355379 A CN2013103355379 A CN 2013103355379A CN 201310335537 A CN201310335537 A CN 201310335537A CN 103400870 A CN103400870 A CN 103400870A
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- solar battery
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- solar cell
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- 239000000758 substrate Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
The invention discloses a solar cell and an electrode pattern design thereof. A solar cell electrode comprises a back electrode structure and a front electrode structure, and is characterized in that the front electrode structure has a full-main-grid structure, and comprises at least two main grids. Correspondingly, the invention further provides a solar cell adopting the electrode pattern design, and a solar cell assembly formed by connecting the solar cells. Due to the adoption of the structure provided by the invention, the photoelectric converting efficiency is increased under the condition that the series resistance of the solar cells are not increased remarkably, and cost can be lowered effectively. Moreover, when the solar cell assembly is formed by connecting, the connection sections among the solar cells are increased, so that the series resistance inside the assembly is reduced, and the output yield can be further increased in an assembling step.
Description
Technical field
The present invention relates to area of solar cell, relate in particular to a kind of solar battery sheet and electrode pattern design and solar module.
Background technology
Conventional solar cells is all the front and back electrode structures.While carrying out front electrode design, two large basic demands are arranged: the first, the series resistance of reduction battery; The second, reduce the electrode shading.Existing front electrode pattern pattern is similar, basically all adopts the primary and secondary gratings structure, and the photogenerated current that battery surface produces first is pooled to many and narrow secondary grid, and then is pooled to several wide main grids; Cover again welding above main grid, in order to other batteries, be connected.
In recent years, in order to reduce the series resistance of battery, during electrode design, the radical of main grid line has the trend of increase before carrying out.But the increase of main grid line can cause the increase of shading and the rising of silver slurry consumption, also can cause simultaneously the consumption of welding is increased.In order to reduce the electrode shading, it is narrower that main grid line and welding all need to do, and will cause like this production difficulty to increase.Can use artificial welding in the past, and after main grid line and welding attenuated, alignment difficulties while manually welding, needed to introduce automatic welding machine.To sum up, directly caused the rising of production cost for the transformation of front electrode design.
How can keep the photoelectric conversion efficiency of solar cell, and reduce production costs under the prerequisite that increases main grid line radical, be present problem demanding prompt solution.
Summary of the invention
The thinking that the present invention will increase the main grid radical extends to ultimate attainment: namely the main grid radical is done toward many limit, and its width is with toward the narrow limit, doing simultaneously.At this moment, main grid has played the collection effect as secondary grid, can substitute secondary grid fully.Through like this front electrode of the solar battery sheet of design, although series resistance increases to some extent, recruitment seldom, and starch consumption and all greatly descended by electrode shading and silver.To have when the solar battery sheet of electrode pattern connects into solar module before this, can not re-use welding, and need with thin conductive filament replacement welding., because conductive filament is very thin, therefore need to use automatic welding machine equally when welding.Although solar battery sheet electrode pattern provided by the invention design and solar cell and solar module can bring such as defects such as series resistance slightly raise, but on the whole, in this structure and traditional handicraft, the solar battery sheet of primary and secondary gratings structure is compared and is being close under identical series resistance condition, photoelectric conversion efficiency is higher, and production cost is lower.
According to an aspect of the present invention, provide a kind of solar battery sheet electrode pattern design, described solar cell plate electrode comprises back electrode structure and front electrode structure, it is characterized in that, described front electrode structure is full main grid structure, comprises at least two main grids.
According to a specific embodiment of the present invention, described main grid be arranged in parallel.
According to another embodiment of the present invention, described main grid is symmetrical at solar battery front side.
According to another embodiment of the present invention, described main grid width is inhomogeneous, and the width of exit is greater than end.
According to another aspect of the present invention, a kind of solar battery sheet is provided, comprise substrate, be positioned at the PN junction of this substrate front surface, the back electrode that is positioned at the front electrode on this substrate front surface and is positioned at this substrate back of the body surface, it is characterized in that, described front electrode and back electrode adopt the described solar battery sheet electrode pattern design of above-mentioned any one.
According to a further aspect of the invention, provide a kind of solar module, comprise base plate, a plurality of solar battery sheet as above and conductive filament, wherein:
Described a plurality of solar battery sheet is sequentially arranged on described base plate, and the front surface of described a plurality of solar battery sheets is towards same direction;
Described a plurality of solar battery sheet connects by described conductive filament.
According to a specific embodiment of the present invention, described connection comprises: in parallel or series connection.
According to another embodiment of the present invention, described conductive filament is wire.
The invention provides in the front electrode design of solar cell, front electrode is the narrow main grid line of series of parallel, without laterally getting in touch with secondary grid; Namely adopt full main grid design to replace original primary and secondary gratings structure.When solar battery sheet connects into assembly, adopt thin conduction (metal) silk to engage with these main grid lines, to replace the welding in traditional handicraft.Adopt structure provided by the invention, the series resistance of assembly is basic identical with the assembly that adopts traditional primary and secondary gratings structure to be formed by connecting; Yet shading-area and silver slurry consumption reduce (calculate as an example of common 3 main grid cell pieces example, can reduce more than 20%) greatly, and the photoelectric conversion efficiency of solar battery sheet will increase to some extent by this, and can effectively reduce costs.And due to when connecting into solar module, the connection cross section between solar battery sheet increases, and has reduced the series resistance of component internal, in the assembly link, will obtain further exporting income.
Description of drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Figure 1 shows that the front electrode structure schematic diagram according to a kind of embodiment of a kind of solar battery sheet electrode pattern design provided by the invention.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Disclosing hereinafter provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter parts and the setting of specific examples are described.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself do not indicate the relation between the various embodiment of discuss and/or setting.Should be noted that illustrated parts are not necessarily drawn in proportion in the accompanying drawings.The present invention has omitted description to known assemblies and treatment technology and technique to avoid unnecessarily limiting the present invention.
, with reference to figure 1, Figure 1 shows that the front electrode structure schematic diagram according to a kind of embodiment of a kind of solar battery sheet electrode pattern design provided by the invention.Solar battery sheet 1 comprises back electrode structure and front electrode structure, Figure 1 shows that the front electrode pattern design of solar battery sheet 1.As can be seen from Figure 1, solar battery sheet 1 is square structure.It should be noted that solar battery sheet 1 can also be other various shapes according to actual needs,, as rectangle, triangle etc., be not limited to square structure.With reference to figure 1, the front electrode structure of solar battery sheet 1 is full main grid structure, namely only has main grid 2, and there is no secondary grid.Namely main grid 2 has had the function of main grid and secondary grid in the conventional solar cell sheet concurrently.Described main grid 2 is at least two.Compare with the conventional solar cell sheet, the main grid 2 of the present invention's design in the design of solar battery sheet electrode pattern is narrower, can effectively reduce grid line blocking for light like this; Simultaneously, due to having attenuated of main grid 2, the silver slurry consumption that therefore uses when the printing grid line also reduces to some extent, effectively reduces production cost.
For the ease of the follow-up connection between main grid 2, and make collecting of photoelectric current more even, preferred, many main grids 2 are taked the parallel mode setting.
Due to meeting and thin conductive filament after main grid 2, being preferably the electric installation such as fine wire connects so that with the photoelectric current conducting, and in the present invention, the width of main grid 2 is narrow as far as possible, therefore, for the width that can meet main grid 2 reaches thin narrow requirement, can effectively photoelectric current be drawn again, preferred, main grid 2 is designed to the inhomogeneous grid line of width, makes the width of its exit greater than end.Adopt main grid 2 designs of this shape, can further improve the photoelectric conversion efficiency of solar battery sheet.
The present invention also provides a kind of solar battery sheet, the back electrode that described solar battery sheet comprises substrate, is positioned at the PN junction of this substrate front surface, is positioned at the front electrode on this substrate front surface and is positioned at this substrate back of the body surface.Described front electrode adopts as above, is also that full main grid solar battery sheet electrode pattern provided by the invention manufactures and designs and forms.
In addition, the present invention also provides a kind of solar module, and described solar module comprises base plate, a plurality of as above, is also solar battery sheet provided by the invention and conductive filament.A plurality of solar battery sheets are sequentially arranged on described base plate; And the front surface of these solar battery sheets is towards same direction, i.e. the direction of illumination, in order to collect sunlight; Adopt conductive filament that described a plurality of solar battery sheets are connected.Preferably, described conductive filament is wire, and its width is significantly less than the welding in traditional handicraft.Optionally, described connection comprises: in parallel or series connection.
Adopt the solar battery sheet that electrode pattern of the present invention manufactures and designs in the situation that series resistance does not obviously raise, photoelectric conversion efficiency has obvious lifting, and manufacturing cost can significantly descend.In addition, owing to having adopted new conductive filament to replace the wider welding that uses in the traditional handicraft, the output income when connecting into solar module can be further enhanced.
Although describe in detail about example embodiment and advantage thereof, be to be understood that and can carry out various variations, substitutions and modifications to these embodiment in the situation that do not break away from the protection range that spirit of the present invention and claims limit.For other examples, when those of ordinary skill in the art should easily understand within keeping protection range of the present invention, the order of processing step can change.
Claims (8)
1. solar battery sheet electrode pattern design, described solar cell plate electrode comprises back electrode structure and front electrode structure, it is characterized in that, described front electrode structure is full main grid structure, comprises at least two main grids.
2. solar battery sheet electrode pattern design according to claim 1, is characterized in that, described main grid be arranged in parallel.
3. solar battery sheet electrode pattern design according to claim 1, is characterized in that, described main grid is symmetrical at solar battery front side.
4. solar battery sheet electrode pattern design according to claim 1, is characterized in that, described main grid width is inhomogeneous, and the width of exit is greater than end.
5. solar battery sheet, comprise substrate, be positioned at the PN junction of this substrate front surface, the back electrode that is positioned at the front electrode on this substrate front surface and is positioned at this substrate back of the body surface, it is characterized in that, described front electrode and back electrode adopt solar battery sheet electrode pattern design as described in claim 1 to 4 any one.
6. a solar module, comprise base plate, a plurality of solar battery sheet as claimed in claim 5 and conductive filament, wherein:
Described a plurality of solar battery sheet is sequentially arranged on described base plate, and the front surface of described a plurality of solar battery sheets is towards same direction;
Described a plurality of solar battery sheet connects by described conductive filament.
7. solar module according to claim 6, is characterized in that, described connection comprises: in parallel or series connection.
8. solar module according to claim 6, is characterized in that, described conductive filament is wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013103355379A CN103400870A (en) | 2013-08-02 | 2013-08-02 | Solar cell, electrode pattern design thereof and solar cell assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103355379A CN103400870A (en) | 2013-08-02 | 2013-08-02 | Solar cell, electrode pattern design thereof and solar cell assembly |
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| CN103400870A true CN103400870A (en) | 2013-11-20 |
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| CN2013103355379A Pending CN103400870A (en) | 2013-08-02 | 2013-08-02 | Solar cell, electrode pattern design thereof and solar cell assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659122A (en) * | 2015-02-07 | 2015-05-27 | 秦皇岛博硕光电设备股份有限公司 | Crystalline silicon battery piece, crystalline silicon battery assembly as well as connection method of crystalline silicon battery piece |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532955U (en) * | 2009-11-23 | 2010-07-21 | 宁波太阳能电源有限公司 | Silicon solar cell |
| CN102130197A (en) * | 2010-12-31 | 2011-07-20 | 常州天合光能有限公司 | A reflective and low-resistance crystalline silicon solar cell module and its connecting ribbon |
| CN102148264A (en) * | 2010-12-30 | 2011-08-10 | 袁晓 | Silicon solar battery with wire electrode and manufacturing method thereof |
| CN102184974A (en) * | 2010-12-02 | 2011-09-14 | 江阴浚鑫科技有限公司 | Positive electrode of solar cell |
| US8080729B2 (en) * | 2008-11-24 | 2011-12-20 | Palo Alto Research Center Incorporated | Melt planarization of solar cell bus bars |
| CN202423302U (en) * | 2011-12-21 | 2012-09-05 | 中电电气（南京）光伏有限公司 | Crystalline silicon solar battery |
| CN102751360A (en) * | 2012-07-20 | 2012-10-24 | 合肥海润光伏科技有限公司 | Photovoltaic component and manufacture method thereof |
| CN103022201A (en) * | 2011-09-27 | 2013-04-03 | 杜邦公司 | Crystal silicon solar battery module and manufacturing method thereof |
| US20130160847A1 (en) * | 2010-08-24 | 2013-06-27 | Sanyo Electric Co., Ltd. | Solar cell and method of manufacturing the same |
-
2013
- 2013-08-02 CN CN2013103355379A patent/CN103400870A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8080729B2 (en) * | 2008-11-24 | 2011-12-20 | Palo Alto Research Center Incorporated | Melt planarization of solar cell bus bars |
| CN201532955U (en) * | 2009-11-23 | 2010-07-21 | 宁波太阳能电源有限公司 | Silicon solar cell |
| US20130160847A1 (en) * | 2010-08-24 | 2013-06-27 | Sanyo Electric Co., Ltd. | Solar cell and method of manufacturing the same |
| CN102184974A (en) * | 2010-12-02 | 2011-09-14 | 江阴浚鑫科技有限公司 | Positive electrode of solar cell |
| CN102148264A (en) * | 2010-12-30 | 2011-08-10 | 袁晓 | Silicon solar battery with wire electrode and manufacturing method thereof |
| CN102130197A (en) * | 2010-12-31 | 2011-07-20 | 常州天合光能有限公司 | A reflective and low-resistance crystalline silicon solar cell module and its connecting ribbon |
| CN103022201A (en) * | 2011-09-27 | 2013-04-03 | 杜邦公司 | Crystal silicon solar battery module and manufacturing method thereof |
| CN202423302U (en) * | 2011-12-21 | 2012-09-05 | 中电电气（南京）光伏有限公司 | Crystalline silicon solar battery |
| CN102751360A (en) * | 2012-07-20 | 2012-10-24 | 合肥海润光伏科技有限公司 | Photovoltaic component and manufacture method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659122A (en) * | 2015-02-07 | 2015-05-27 | 秦皇岛博硕光电设备股份有限公司 | Crystalline silicon battery piece, crystalline silicon battery assembly as well as connection method of crystalline silicon battery piece |
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Application publication date: 20131120 |
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