CN103545388A - Solar cell panel assembly - Google Patents
Solar cell panel assembly Download PDFInfo
- Publication number
- CN103545388A CN103545388A CN201310574558.6A CN201310574558A CN103545388A CN 103545388 A CN103545388 A CN 103545388A CN 201310574558 A CN201310574558 A CN 201310574558A CN 103545388 A CN103545388 A CN 103545388A
- Authority
- CN
- China
- Prior art keywords
- grid line
- panel assembly
- solar cell
- cell panel
- cell piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
-
- 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
Abstract
The invention provides a solar cell panel assembly. The solar cell panel assembly comprises a battery piece (10) and a plurality of grid lines (20) connected to the battery piece (10), the density of the grid lines (20) in the middle of the battery piece (10) is larger than that of the grid lines (20) on the edge of the battery piece (10), and the density of the grid lines (20) is the surface area of the grid lines (20) in a unit area on the battery piece (10). According to the technical scheme, the solar cell panel assembly effectively solves the problem that a solar cell panel assembly with a battery piece having high square resistance in the prior art is relatively poor in use performance.
Description
Technical field
The present invention relates to technical field of solar, in particular to a kind of solar cell panel assembly.
Background technology
Along with the price of solar cell drops gradually, falling cost becomes one of major tasks of each solar energy manufacturer.The main path that falls cost has the material of falling unit consumption, falls material price, promotes battery efficiency etc.
In the conversion efficiency by lifting solar cell, reaching in the technology of falling cost, polycrystalline battery production technology has five techniques, the sour making herbs into wool of concrete rich card, phosphorus diffusion, PN junction partition, PECVD depositing antireflection film and positive backplate printing and sintering.Above-mentioned technique prepare respectively there is the rough suede structure of antireflective effect, partition, deposition that the PN junction of preparing certain depth, the N-type layer of removing surrounding and the back side reach positive back side N-type layer have the blue silicon nitride film of antireflective and passivation and print positive backplate and form good ohmic contact by sintering.Optimize diffusion technology, promote square resistance and improve the means that short wavelength light effect is usually lifting battery efficiency.
Diffusing procedure is to utilize the P type silicon chip of boron-doping as base material, and in 850 degree left and right, the phosphorus atoms formation N type semiconductor by diffusion pentavalent, forms PN junction.In order to make PN junction place have more light to absorb, so require the junction depth of PN junction shallow as far as possible, so just can obtain high square resistance.But along with increasing of average square resistance, the square resistance uniformity in single silicon chip, between silicon chip also can variation.Like this, the solar cell panel assembly of traditional structure can be poor for the serviceability with the cell piece of high square resistance.
Summary of the invention
The present invention aims to provide a kind of solar cell panel assembly, to solve solar cell panel assembly of the prior art for the poor problem of serviceability with the cell piece of high square resistance.
To achieve these goals, the invention provides a kind of solar cell panel assembly, comprising: cell piece; Many grid lines, are connected on cell piece, and the density of the grid line of the zone line of cell piece is greater than the density of grid line of the fringe region of cell piece, and the density of grid line refers on cell piece the surface area of grid line in unit area.
Further, on the bearing of trend of grid line, by the centre of cell piece, the edge to cell piece is tapered each grid line.
Further, in the direction perpendicular to grid line, the distribution density that is positioned at many grid lines at middle part is greater than the distribution density of many grid lines that are positioned at two ends.
Further, the width at the middle part of grid line is in the scope of 35 μ m to 45 μ m, and the width at the two ends of grid line is in the scope of 30 μ m to 35 μ m.
Further, in the direction perpendicular to grid line, in scope in the minimum range between adjacent two grid lines of many grid lines at middle part at 0.783mm to 1.384mm, in the scope in the minimum range between adjacent two grid lines of many grid lines at two ends at 1.435mm to 2.02mm.
Further, in the direction perpendicular to grid line, the width that is positioned at many grid lines at two ends is steady state value.
Further, solar cell panel assembly also comprises welding, and welding is arranged on cell piece, and connects grid line.
Further, welding is arranged on cell piece uniformly.
Further, the average square resistance of cell piece is greater than or equal to 90 ohm.
Apply technical scheme of the present invention, on cell piece, connect many grid lines.Wherein, the moire grids density of the zone line of cell piece is greater than the moire grids density of the fringe region of cell piece, and moire grids density refers on cell piece the surface area of grid line in unit area.Like this, in the high central area of average square resistance, the wide part of grid line has effectively increased the contact area being electrically connected to, and in the low both sides of average square resistance, the part that grid line is thin is dodged except more illuminating area, has effectively improved solar cell panel assembly for the serviceability with the cell piece of high square resistance.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows according to the structural representation of the embodiment of solar cell panel assembly of the present invention.
Above-mentioned accompanying drawing comprises the following drawings mark:
10, cell piece; 20, grid line; 30, welding.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
After a series of experimental verification, to find generally, the average square resistance with its central area of cell piece of high square resistance is greater than the average square resistance of cell piece peripheral region.The high region of average square resistance, its contact resistance also can increase.
As shown in Figure 1, the solar cell panel assembly of the present embodiment, comprising: cell piece 10 and many grid lines 20.Wherein many grid lines 20 are connected on cell piece 10, and the density of the grid line 20 of the zone line of cell piece 10 is greater than the density of grid line 20 of the fringe region of cell piece 10, and the density of grid line 20 refers on cell piece 10 surface area of grid line 20 in unit area.
The technical scheme of application the present embodiment connects many grid lines 20 on cell piece 10.Wherein, the density of the grid line 20 of the zone line of cell piece 10 is greater than the density of grid line 20 of the fringe region of cell piece 10, and the density of grid line 20 refers on cell piece 10 surface area of grid line 20 in unit area.Like this, in the high central area of average square resistance, the wide part of grid line 20 has effectively increased the contact area being electrically connected to, and in the low both sides of average square resistance, the part that grid line 20 is thin is dodged except more illuminating area, has effectively improved solar cell panel assembly for the serviceability with the cell piece 10 of high square resistance.
As shown in Figure 1, in the present embodiment, on the bearing of trend of grid line 20, by the centre of cell piece 10, the edge to cell piece 10 is tapered each grid line 20.Preferably, the width at the middle part of grid line 20 is in the scope of 35 μ m to 45 μ m, and the width at the two ends of grid line 20 is in the scope of 30 μ m to 35 μ m.Be readily embodied in so the high region of average square resistance on cell piece and have the more area that is electrically connected to grid line.
In the present embodiment, in the direction perpendicular to grid line 20, the distribution density that is positioned at many grid lines 20 at middle part is greater than the distribution density of many grid lines 20 that are positioned at two ends.Preferably, in the direction perpendicular to grid line 20, in scope in the minimum range between adjacent two grid lines 20 of many grid lines 20 at middle part at 0.783mm to 1.384mm, in the scope in the minimum range between adjacent two grid lines 20 of many grid lines 20 at two ends at 1.435mm to 2.02mm.Such distribution makes the middle part that average square resistance is high comprise a lot of grid line 20, has effectively increased the contact area being electrically connected to.And on cell piece the low two ends of average square resistance, the minimizing of grid line 20 is dodged except more illuminating area.Like this, further improved solar cell panel assembly for the serviceability with the cell piece 10 of high square resistance.
In the present embodiment, in the direction perpendicular to grid line 20, the width that is positioned at many grid lines 20 at two ends is steady state value.So both save cost, and also made region that average square resistance is low meeting on the basis that is electrically connected to contact area, guaranteed more illuminating area.
As shown in Figure 1, in the present embodiment, solar cell panel assembly also comprises welding 30, and welding 30 is arranged on cell piece 10, and connects grid line 20.Preferably, welding 30 is arranged on cell piece 10 uniformly.
The technical scheme of the present embodiment is more suitable for average square resistance and is greater than or equal to 90 ohm of cell pieces.
The solar cell panel assembly obtaining according to the technical scheme of above-described embodiment, is exemplified below:
Example 1: 90 ohm of average square resistances, in single silicon chip, square resistance scope is 70 ohm-110 ohm, the radical 40-50 root of high square resistance region, the total radical 100-110 Gen， of the grid line center grid line in silk-screen patterns, grid line interval 1.102-1.384mm, width is at 30um-35um.The radical 50-60 root of peripheral regions grid line, interval 1.678-2.02mm, width 35-45um.
Example 2: 100 ohm of average square resistances, in single silicon chip, square resistance scope is 80 ohm-120 ohm, the radical 50-60 root of high square resistance region, the total radical 110-120 Gen， of the grid line center grid line in silk-screen patterns, interval 0.915-1.102mm, width is at 30um-35um.The radical 60-70 root of peripheral regions grid line, interval 1.435-1.678mm, width 35-45um.
Example 3: 110 ohm of average square resistances, in single silicon chip, square resistance scope is 90 ohm-130 ohm, the total radical 110-130 of the grid line root in silk-screen patterns, the radical 60-70 root of central area grid line, interval 0.783-0.915mm, width is at 30um-35um.The radical 50-60 root of peripheral regions grid line, interval 1.678-2.02mm, width 35-45um.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a solar cell panel assembly, comprising:
Cell piece (10);
Many grid lines (20), are connected to described cell piece (10) upper,
It is characterized in that, the density of the described grid line (20) of the zone line of described cell piece (10) is greater than the density of described grid line (20) of the fringe region of described cell piece (10), and the density of described grid line (20) refers to the surface area of described grid line (20) in the upper unit area of described cell piece (10).
2. solar cell panel assembly according to claim 1, is characterized in that, on the bearing of trend of described grid line (20), by the centre of described cell piece (10), the edge to described cell piece (10) is tapered grid line described in each (20).
3. solar cell panel assembly according to claim 1, is characterized in that, in the direction perpendicular to described grid line, the distribution density that is positioned at described many grid lines (20) at middle part is greater than the distribution density of described many grid lines (20) that are positioned at two ends.
4. solar cell panel assembly according to claim 2, is characterized in that, the width at the middle part of described grid line (20) is in the scope of 35 μ m to 45 μ m, and the width at the two ends of described grid line (20) is in the scope of 30 μ m to 35 μ m.
5. solar cell panel assembly according to claim 4, it is characterized in that, in the direction perpendicular to described grid line (20), be positioned at minimum range between adjacent two described grid lines (20) of described many grid lines (20) at middle part in the scope of 0.783mm to 1.384mm, be positioned at minimum range between adjacent two described grid lines (20) of described many grid lines (20) at two ends in the scope of 1.435mm to 2.02mm.
6. solar cell panel assembly according to claim 1, is characterized in that, in the direction perpendicular to described grid line (20), the width that is positioned at described many grid lines (20) at two ends is steady state value.
7. solar cell panel assembly according to claim 1, is characterized in that, described solar cell panel assembly also comprises welding (30), and it is upper that described welding (30) is arranged on described cell piece (10), and connect described grid line (20).
8. solar cell panel assembly according to claim 7, is characterized in that, described welding (30) is arranged on described cell piece (10) equably.
9. according to the solar cell panel assembly described in any one in claim 1 to 8, it is characterized in that, the average square resistance of described cell piece (10) is greater than or equal to 90 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574558.6A CN103545388A (en) | 2013-11-15 | 2013-11-15 | Solar cell panel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310574558.6A CN103545388A (en) | 2013-11-15 | 2013-11-15 | Solar cell panel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103545388A true CN103545388A (en) | 2014-01-29 |
Family
ID=49968653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310574558.6A Pending CN103545388A (en) | 2013-11-15 | 2013-11-15 | Solar cell panel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103545388A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016065938A1 (en) * | 2014-10-31 | 2016-05-06 | Byd Company Limited | Solar cell unit, solar cell array, solar cell module and manufacturing method thereof |
| WO2024032106A1 (en) * | 2022-08-12 | 2024-02-15 | 隆基绿能科技股份有限公司 | Integral solar cell, segmented cell, photovoltaic assembly and photovoltaic roof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080092942A1 (en) * | 2006-10-13 | 2008-04-24 | The Boeing Company | Front contact design for high-intensity solar cells and optical power converters |
| EP2219226A2 (en) * | 2009-02-11 | 2010-08-18 | Neo Solar Power Corp. | Electrode structure and solar cell comprising the same |
| CN201732795U (en) * | 2010-07-28 | 2011-02-02 | 常州天合光能有限公司 | Crystalline silicon solar cell film |
| CN103000708A (en) * | 2012-09-27 | 2013-03-27 | 奥特斯维能源（太仓）有限公司 | Annular positive electrode |
| CN203071088U (en) * | 2013-01-17 | 2013-07-17 | 太极能源科技（昆山）有限公司 | Positive electrode drawing and archives of solar cell |
| CN103337526A (en) * | 2012-11-14 | 2013-10-02 | 横店集团东磁股份有限公司 | Front-side electrode layout structure of solar cell |
| CN203232878U (en) * | 2013-04-27 | 2013-10-09 | 中利腾晖光伏科技有限公司 | Solar cell front electrode structure |
-
2013
- 2013-11-15 CN CN201310574558.6A patent/CN103545388A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080092942A1 (en) * | 2006-10-13 | 2008-04-24 | The Boeing Company | Front contact design for high-intensity solar cells and optical power converters |
| EP2219226A2 (en) * | 2009-02-11 | 2010-08-18 | Neo Solar Power Corp. | Electrode structure and solar cell comprising the same |
| CN201732795U (en) * | 2010-07-28 | 2011-02-02 | 常州天合光能有限公司 | Crystalline silicon solar cell film |
| CN103000708A (en) * | 2012-09-27 | 2013-03-27 | 奥特斯维能源（太仓）有限公司 | Annular positive electrode |
| CN103337526A (en) * | 2012-11-14 | 2013-10-02 | 横店集团东磁股份有限公司 | Front-side electrode layout structure of solar cell |
| CN203071088U (en) * | 2013-01-17 | 2013-07-17 | 太极能源科技（昆山）有限公司 | Positive electrode drawing and archives of solar cell |
| CN203232878U (en) * | 2013-04-27 | 2013-10-09 | 中利腾晖光伏科技有限公司 | Solar cell front electrode structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016065938A1 (en) * | 2014-10-31 | 2016-05-06 | Byd Company Limited | Solar cell unit, solar cell array, solar cell module and manufacturing method thereof |
| WO2024032106A1 (en) * | 2022-08-12 | 2024-02-15 | 隆基绿能科技股份有限公司 | Integral solar cell, segmented cell, photovoltaic assembly and photovoltaic roof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140129 |
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| RJ01 | Rejection of invention patent application after publication |