CN103545386A - Solar cell electrode shape - Google Patents
Solar cell electrode shape Download PDFInfo
- Publication number
- CN103545386A CN103545386A CN201310502722.2A CN201310502722A CN103545386A CN 103545386 A CN103545386 A CN 103545386A CN 201310502722 A CN201310502722 A CN 201310502722A CN 103545386 A CN103545386 A CN 103545386A
- Authority
- CN
- China
- Prior art keywords
- grid line
- electrode
- main grid
- width
- solar cell
- 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
- 238000013459 approach Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007639 printing Methods 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 abstract description 2
- 239000004332 silver Substances 0.000 abstract description 2
- 230000010307 cell transformation Effects 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002800 charge carrier Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
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
- H01L31/022433—Particular geometry of the grid contacts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a solar cell electrode shape, and belongs to the technical field of solar photovoltaic cell manufacturing. The solar cell electrode shape is mainly characterized in that the closer auxiliary grid lines are to main grid lines, the larger the width of the auxiliary grid lines is, and therefore the collecting capacity of a free carrier can be improved. The solar cell electrode shape mainly has the advantages that in electrical performance, the series resistance of a solar cell is mainly improved, and cell transformation efficiency is improved; the position of a printing portion becomes narrow, and the effect of saving silver paste is achieved. The same theory can be generalized, the width of the two ends of each main grid line is larger than that of the middle of each main grid line, and therefore the series resistance formed after cells are connected together in series can be improved, and the transformation efficiency of a module is improved. The grid line shape design can be applied to different cell structures, a front electrode cell can be applied to the design of a front electrode, and the method (such as IBC/MWT/HIT) can be used for designing the electrode shape as long as the cells of other electrode structures relate to the conduction of the carrier from the auxiliary grid lines to the main grid lines.
Description
Technical field
The present invention relates to a kind of electrode of solar battery shape, belong to solar-energy photo-voltaic cell manufacturing technology field.
Background technology
Solar cell, after the operations such as making herbs into wool, diffusion and PECVD, has been made PN junction, can, at generation current under illumination, for the electric current producing is derived, need on battery surface, make positive and negative two electrodes.The method of manufacturing electrode is a lot, and silk screen printing is to make at present the most general a kind of production technology of electrode of solar battery.And the technique of most critical is exactly the preparation of front electrode in silk-screen printing technique, front electrode preparation quality quality has a strong impact on battery conversion efficiency.The Main Function of electrode is that secondary grid line is collected free carrier, the charge carrier of collecting on secondary grid line all can flow to main grid line, near the secondary grid of main grid, except collecting the charge carrier of periphery, also play the conduction charge carrier that secondary grid are collected from afar to the effect of main grid, so higher the closer to the electric current of the secondary grid of main grid.Theoretically, electrode strip is wider, and collection electronic capability is stronger, and the main grid line of the printed pattern of traditional electrode and secondary grid line are all generally as broad as long rectangular pattern.Suitable with the electron collection ability of secondary grid away from main grid near the secondary grid of main grid according to theoretical traditional electrode above, cause collecting electronic capability near the secondary grid position of main grid and weaken, reduced battery conversion efficiency.
Summary of the invention
The object of this invention is to provide a kind of electrode of solar battery shape, solve the main grid line of existing electrode and secondary grid line because being all as broad as long rectangular pattern, above shortcomings, improve the capacity gauge of free carrier by the present invention, thereby effectively improve battery conversion efficiency.
The object of the invention is to be achieved through the following technical solutions, a kind of electrode of solar battery shape, perpendicular to the some secondary grid line of each main grid line, is characterized in that in electrode, and the width of secondary grid line that more approaches main grid line is larger.
The narrow hem width degree of secondary grid line is controlled at 10 ~ 30um, and broadside is controlled at 50 ~ 100um.
Width in the middle of main grid line two ends width is slightly larger than.
The present invention is by taking more to approach the larger design of width of the secondary grid line of main grid line, can improve the capacity gauge of free carrier like this, main benefit shows: 1) series resistance of solar cell is mainly improved in electrical property aspect, improves battery conversion efficiency; 2) printing position narrows down, and plays the effect of saving silver slurry.
It is wider that same principle extends to main grid line width that main grid line also the adopts two ends width in the middle of can be, can improve like this series resistance after battery strings is linked togather, and improves the conversion efficiency of module.This grid line shape design can be applicable in different battery structures, front electrode battery may be used in the design of front electrode, as long as other electrode structure battery relates to the conduction of charge carrier from secondary grid line to main grid line, can apply the method (as IBC/MWT/HIT etc.) and designs electrode shape.
Accompanying drawing explanation
Fig. 1 is the shape schematic diagram of main grid line and secondary grid line in electrode of the present invention;
Fig. 2 is one of shape schematic diagram of the secondary grid line of close main grid line in electrode of the present invention;
Fig. 3 is near two of the shape schematic diagram of the secondary grid line of main grid line in electrode of the present invention;
Fig. 4 is near three of the shape schematic diagram of the secondary grid line of main grid line in electrode of the present invention;
In figure, 1 main grid line, 2 secondary grid lines, 3 solar battery sheets.
Embodiment
Further illustrate in conjunction with the accompanying drawings and embodiments the present invention, in the front electrode figure generally using at present, positive gate electrode is distributed in the front of solar battery sheet, positive gate electrode comprises the secondary grid line that the main grid line that is parallel to each other and Duo Gen and main grid line are perpendicular, main grid line has two, wherein two are arranged in both sides, left/right side main grid line from silicon chip edge apart from 26mm, the spacing of main grid line and main grid line is 52mm, main grid line and secondary grid line are all standard rectangular shape, main grid line length 154mm, width 1.5mm; The long 154mm of secondary grid line, width 50um.
As shown in Figure 1, in the present invention, main grid line 1 is constant, and long is 154mm, and width is 1.5mm; Secondary grid line 2 is long is 26mm, and narrow hem width degree is 30um, and broadside width is 70um.Secondary grid line 2 shapes have as follows: as shown in Figure 2, secondary grid line 2 width of close main grid line 1 are with rectangle or trapezoidally increase progressively gradually.As shown in Figure 3, secondary grid line 2 width near main grid line 1 increase progressively gradually with cambered surface or curved surface.As shown in Figure 4, secondary grid line 2 width near main grid line 1 increase progressively gradually with triangle.It is large that the newly-designed secondary grid line 2 shape electrode gross areas do not become, do not affect solar battery front side shading-area, do not increase slurry weight, in the situation that not raising the cost, improve the fill factor, curve factor of solar cell, thereby improve the conversion efficiency of solar cell yet.
Claims (6)
1. an electrode of solar battery shape, comprises main grid line and secondary grid line in electrode, it is characterized in that, the width of secondary grid line that more approaches main grid line is larger.
2. electrode of solar battery shape according to claim 1, is characterized in that, the narrow hem width degree of secondary grid line is controlled at 10 ~ 30um, and broadside is controlled at 50 ~ 100um.
3. electrode of solar battery shape according to claim 1 and 2, is characterized in that, near the secondary grid line width of main grid line with rectangle or trapezoidally increase progressively gradually.
4. electrode of solar battery shape according to claim 1 and 2, is characterized in that, the secondary grid line width of close main grid line increases progressively gradually with cambered surface or curved surface.
5. electrode of solar battery shape according to claim 1 and 2, is characterized in that, the secondary grid line width of close main grid line increases progressively gradually with triangle.
6. electrode of solar battery shape according to claim 1, is characterized in that, the width in the middle of main grid line two ends width is slightly larger than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502722.2A CN103545386A (en) | 2013-10-24 | 2013-10-24 | Solar cell electrode shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310502722.2A CN103545386A (en) | 2013-10-24 | 2013-10-24 | Solar cell electrode shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103545386A true CN103545386A (en) | 2014-01-29 |
Family
ID=49968651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310502722.2A Pending CN103545386A (en) | 2013-10-24 | 2013-10-24 | Solar cell electrode shape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103545386A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550637A (en) * | 2018-06-22 | 2018-09-18 | 通威太阳能（安徽）有限公司 | A kind of more main grid crystal silicon solar batteries back of the body electric field structures |
| CN109524484A (en) * | 2018-11-26 | 2019-03-26 | 西安交通大学 | Micro- vibration of highly conductive silver electrode assists high speed impact deposition method |
| CN110335905A (en) * | 2019-08-20 | 2019-10-15 | 通威太阳能（安徽）有限公司 | A kind of structure and its method improving double-side cell back up |
| CN110660874A (en) * | 2019-09-30 | 2020-01-07 | 通威太阳能（合肥）有限公司 | Auxiliary grid electrode and solar cell |
-
2013
- 2013-10-24 CN CN201310502722.2A patent/CN103545386A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108550637A (en) * | 2018-06-22 | 2018-09-18 | 通威太阳能（安徽）有限公司 | A kind of more main grid crystal silicon solar batteries back of the body electric field structures |
| CN108550637B (en) * | 2018-06-22 | 2023-07-25 | 通威太阳能（安徽）有限公司 | Back electric field structure of multi-main-grid crystalline silicon solar cell |
| CN109524484A (en) * | 2018-11-26 | 2019-03-26 | 西安交通大学 | Micro- vibration of highly conductive silver electrode assists high speed impact deposition method |
| CN109524484B (en) * | 2018-11-26 | 2020-05-22 | 西安交通大学 | Micro-vibration assisted high-speed impact deposition method of high-conductivity silver electrode |
| CN110335905A (en) * | 2019-08-20 | 2019-10-15 | 通威太阳能（安徽）有限公司 | A kind of structure and its method improving double-side cell back up |
| CN110660874A (en) * | 2019-09-30 | 2020-01-07 | 通威太阳能（合肥）有限公司 | Auxiliary grid electrode and solar cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203932074U (en) | A kind of electrode structure at right side of solar cell | |
| CN102779861B (en) | Electrode structure with grid lines on front surface | |
| CN103029423B (en) | Solar battery sheet and printing screen thereof | |
| CN203752663U (en) | Solar cell front electrode screen printing plate | |
| CN102931245A (en) | Solar cell front face grid line and solar cell sheet printed with same | |
| CN204596801U (en) | A kind of N-type double-sided solar battery sheet of many main grids | |
| WO2015003600A1 (en) | Mwt solar battery | |
| CN103545386A (en) | Solar cell electrode shape | |
| CN203617305U (en) | Grid line structure of solar cell | |
| CN202332869U (en) | Back contact type solar cell piece and solar cell component | |
| CN201796897U (en) | Front contact structure of crystalline silicon solar cell | |
| CN204991723U (en) | Solar cell electrode | |
| CN104157729A (en) | Positive electrode structure of crystal silicon solar battery and printing process thereof | |
| CN203085565U (en) | Novel solar battery positive electrode | |
| CN203055923U (en) | Solar cell front face grid line and solar cell sheet printed with same | |
| CN207834320U (en) | A kind of crystal silicon solar batteries front electrode main grid structure | |
| CN203250753U (en) | Solar battery sheet front-surface positive electrode | |
| CN203312308U (en) | Gate line electrode of solar energy cell sheet, solar energy cell sheet and solar energy cell panel | |
| CN203377218U (en) | Five-main grid solar crystalline silicon solar cell | |
| CN203071084U (en) | Sectional back electrode and back field structure | |
| CN202616241U (en) | Positive electrode structure of crystalline silicon solar battery | |
| CN206619601U (en) | A kind of improved solar battery sheet of grid line structure | |
| CN203617301U (en) | Solar cell electrode | |
| CN205406534U (en) | Solar battery plate | |
| CN107919402A (en) | A kind of crystal silicon solar batteries front electrode main grid structure and its printing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |
|
| WD01 | Invention patent application deemed withdrawn after publication |