CN108172639A - Multiple-grid efficient photovoltaic module - Google Patents
Multiple-grid efficient photovoltaic module Download PDFInfo
- Publication number
- CN108172639A CN108172639A CN201711346214.4A CN201711346214A CN108172639A CN 108172639 A CN108172639 A CN 108172639A CN 201711346214 A CN201711346214 A CN 201711346214A CN 108172639 A CN108172639 A CN 108172639A
- Authority
- CN
- China
- Prior art keywords
- grid
- welding
- photovoltaic module
- efficient photovoltaic
- battery strings
- 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 abstract description 34
- 239000012528 membrane Substances 0.000 claims description 17
- 239000005030 aluminium foil Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910000679 solder Inorganic materials 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 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
- H01L31/022433—Particular geometry of the grid contacts
-
- 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
- H01L31/04—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 adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- 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
- Y02E10/52—PV systems with concentrators
Abstract
The present invention provides a kind of multiple-grid efficient photovoltaic modules, and including several battery strings, the battery strings are formed by several cell pieces, are connected between the battery strings by welding, and at least 13 20 main grids are provided on the cell piece, and the welding is reflective solder strip.Beneficial effects of the present invention are embodied in：Multiple-grid photovoltaic module can significantly improve cell piece current collection efficiency, reduce the distance that electric current passes through in thin grid, reduce the electric current of every main grid itself carrying, meanwhile, product cost is also reduced, there is bright future in future development.
Description
Technical field
The invention belongs to solar photovoltaic assembly fields, and in particular to a kind of multiple-grid efficient photovoltaic module.
Background technology
At present, country constantly payes attention to new energy, and photovoltaic art is outstanding person therein again, and continuous with competitiveness adds
Greatly, under the premise of low cost is ensured, the problem of power of battery becomes researcher's pay attention to day by day.Existing solar battery group
The main grid quantity of part is generally three to four, and when reaching five or more, traditional solar cell module manufacturing technology will be difficult
Think after needing new metallization scheme, could realize the industrialization of more main grid solar battery sheet components.
Invention content
In order to solve the deficiencies in the prior art, the present invention provides a kind of multiple-grid efficient photovoltaic modules.
The purpose of the present invention is achieved through the following technical solutions：
Multiple-grid efficient photovoltaic module, including several battery strings, the battery strings are formed by several cell pieces, between the battery strings
It is connected by welding, at least 13-20 main grid is provided on the cell piece, the welding is equipped with reflective membrane.
Preferably, the main grid extends cell piece both ends, and the welding is with being extended in the main grid at cell piece both ends
Connection, the reflective membrane are set on the welding of main grid gap location.
Preferably, the welding section is circle, and plating is equipped with reflective membrane on the welding.
Preferably, the reflective membrane is set to the upper half border of the welding.
Preferably, the reflective membrane is in the arc-shaped setting of welding upper section.
Preferably, a diameter of 0.4mm of the welding.
Preferably, the main grid is provided with 16.
Preferably, the reflective membrane is aluminium foil.
Preferably, a diameter of 0.2mm-0.3mm of the main grid.
Beneficial effects of the present invention are embodied in：Multiple-grid photovoltaic module can significantly improve cell piece current collection efficiency, subtract
The distance that few electric current passes through in thin grid reduces the electric current of every main grid itself carrying, meanwhile, product cost is also reduced,
There is bright future in future development.
Figure of description
Fig. 1：The structure diagram of photovoltaic module of the present invention.
Fig. 2：The structure diagram of welding of the present invention.
Specific embodiment
It is specifically described technical scheme of the present invention with reference to embodiments, present invention is disclosed a kind of multiple-grid high-efficiency photovoltaic groups
Part, with reference to shown in Fig. 1-Fig. 2, including several battery strings 1, the battery strings 1 are formed by several cell pieces, the battery strings 1 it
Between connected by Novel light-reflecting welding 2, at least 13-20 main grid is provided on the cell piece, the main grid is a diameter of
0.2mm-0.3mm。
Due to the operation difficulty bigger when 16 or more main grid wire bondings, gage of wire smaller used, R＆D costs higher.
Preferably main grid is provided with 16, since 16 main gate lines can reduce the distance that electric current passes through in thin grid, can also reduce
The electric current of every main grid carrying, resistance loss rate smaller, transfer efficiency higher.It is only to illustrate to main grid in the present invention, in figure
Quantity does not represent optimal number of the present invention.
The reflective welding 2 is the solder stick of electroplating surfaces with tin, and top half is coated with reflective membrane 21, and a diameter of 0.2-
The cylindrical welding of 0.5mm.The light received is reflected on cell piece by the reflective membrane 21, increases the absorption efficiency of light.
The reflective membrane 21 is inverted U shape setting in welding upper section, specifically, the reflective membrane is set the welding upper section is arc-shaped
It puts.Due to the structure of U-shaped so that the diffusing reflection of light can be carried out after light is received, is reflected into solar cell on piece again.
The main grid extends cell piece both ends, and the welding is connect with the main grid being extended in cell piece both ends, the reflective membrane
It is set on the welding of main grid gap location.Specifically, the reflective membrane is aluminium foil, because of its fusing point height, when welding, will not be to battery
Piece impacts, and rough surface, can carry out diffusing reflection to sunlight, increase cell piece light-receiving area.As preferred implementation
Example, a diameter of 0.4mm of the welding that the present invention uses.Meanwhile the present invention in be different from existing flat property welding, use section for
Circular welding, welding are much smaller than 0.4mm with cell piece contact width, it is possible to reduce the use of silk-screen printing silver paste is reduced into
This.
Crystal silicon solar batteries piece front electrode in the present invention is similar with the prior art, and screen printing technique may be used
The thin grid line of printing silver and main gate line are formed.More main grid technologies that the present invention uses battery-end transfer efficiency can be promoted 0.2% with
On, save positive silver paste consumption 25-35%；Assembly end power about promotes 10W or so, and photovoltaic degree electricity cost can reduce about 1%.
The present invention can be very good to increase battery light-receiving area, in addition, multiple-grid line causes secondary gate current conduction Distance Shortened,
Hidden split influences to reduce on battery performance.The contact area of welding wire and cell piece reduces so that main gate line is narrower, and it is contour to save silver paste
Cost material.
Certainly still there are many specific embodiments by the present invention, just do not enumerate herein.It is all using equivalent replacement or
Equivalent transformation and all technical solutions formed, all fall within the scope of protection of present invention.
Claims (9)
1. multiple-grid efficient photovoltaic module, it is characterised in that：Including several battery strings, the battery strings are formed by several cell pieces,
It is connected between the battery strings by welding, at least 13-20 main grid is provided on the cell piece, the welding is equipped with anti-
Light film.
2. multiple-grid efficient photovoltaic module as claimed in claim 2, it is characterised in that：The main grid extends cell piece both ends,
The welding is connect with the main grid being extended in cell piece both ends, and the reflective membrane is set on the welding of main grid gap location.
3. multiple-grid efficient photovoltaic module as claimed in claim 2, it is characterised in that：The welding section is circle, and described
Plating is equipped with reflective membrane on welding.
4. multiple-grid efficient photovoltaic module as claimed in claim 3, it is characterised in that：The reflective membrane is set to the welding
Upper half border.
5. multiple-grid efficient photovoltaic module as claimed in claim 4, it is characterised in that：The reflective membrane is in the welding upper section
Arc-shaped setting.
6. multiple-grid efficient photovoltaic module as claimed in claim 5, it is characterised in that：The a diameter of 0.4mm of welding.
7. multiple-grid efficient photovoltaic module as described in claim 1, it is characterised in that：The main grid is provided with 16.
8. multiple-grid efficient photovoltaic module as claimed in claim 3, it is characterised in that：The reflective membrane is aluminium foil.
9. multiple-grid efficient photovoltaic module as described in claim 1, it is characterised in that：The a diameter of 0.2mm-0.3mm of main grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711346214.4A CN108172639A (en) | 2017-12-15 | 2017-12-15 | Multiple-grid efficient photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711346214.4A CN108172639A (en) | 2017-12-15 | 2017-12-15 | Multiple-grid efficient photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108172639A true CN108172639A (en) | 2018-06-15 |
Family
ID=62522197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711346214.4A Pending CN108172639A (en) | 2017-12-15 | 2017-12-15 | Multiple-grid efficient photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108172639A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022202A (en) * | 2012-12-04 | 2013-04-03 | 常州大学 | Novel low cost and high efficiency photovoltaic module |
| CN104269462A (en) * | 2014-09-28 | 2015-01-07 | 苏州中来光伏新材股份有限公司 | High-efficiency back contact solar cell back sheet without main grids, high-efficiency back contact solar cell assembly without main grids and manufacturing technology |
| CN206040655U (en) * | 2016-09-20 | 2017-03-22 | 泰州中来光电科技有限公司 | Many main grids solar cell and subassembly and system |
| CN106711265A (en) * | 2016-12-16 | 2017-05-24 | 中利腾晖光伏科技有限公司 | Photovoltaic tabbing ribbon |
| CN107195713A (en) * | 2017-06-06 | 2017-09-22 | 张家港协鑫集成科技有限公司 | Photovoltaic imbrication component |
-
2017
- 2017-12-15 CN CN201711346214.4A patent/CN108172639A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022202A (en) * | 2012-12-04 | 2013-04-03 | 常州大学 | Novel low cost and high efficiency photovoltaic module |
| CN104269462A (en) * | 2014-09-28 | 2015-01-07 | 苏州中来光伏新材股份有限公司 | High-efficiency back contact solar cell back sheet without main grids, high-efficiency back contact solar cell assembly without main grids and manufacturing technology |
| CN206040655U (en) * | 2016-09-20 | 2017-03-22 | 泰州中来光电科技有限公司 | Many main grids solar cell and subassembly and system |
| CN106711265A (en) * | 2016-12-16 | 2017-05-24 | 中利腾晖光伏科技有限公司 | Photovoltaic tabbing ribbon |
| CN107195713A (en) * | 2017-06-06 | 2017-09-22 | 张家港协鑫集成科技有限公司 | Photovoltaic imbrication component |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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: 20180615 |
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| RJ01 | Rejection of invention patent application after publication |