CN103943698A - Photovoltaic module with main grid lines arranged side by side - Google Patents

Photovoltaic module with main grid lines arranged side by side Download PDF

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Publication number
CN103943698A
CN103943698A CN201410159684.XA CN201410159684A CN103943698A CN 103943698 A CN103943698 A CN 103943698A CN 201410159684 A CN201410159684 A CN 201410159684A CN 103943698 A CN103943698 A CN 103943698A
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CN
China
Prior art keywords
main grid
grid line
photovoltaic module
width
grid lines
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
Application number
CN201410159684.XA
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Chinese (zh)
Inventor
霍祯潮
冯文宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengshui Yingli New Energy Co Ltd
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Hengshui Yingli New Energy Co Ltd
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Filing date
Publication date
Application filed by Hengshui Yingli New Energy Co Ltd filed Critical Hengshui Yingli New Energy Co Ltd
Priority to CN201410159684.XA priority Critical patent/CN103943698A/en
Publication of CN103943698A publication Critical patent/CN103943698A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor 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
    • H01L31/02Details
    • H01L31/0224Electrodes
    • H01L31/022408Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H01L31/022433Particular geometry of the grid contacts
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • 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 discloses a photovoltaic module with main grid lines arranged side by side and relates to the techncial field of solar power generation. The photovoltaic module comprises a plurality of cells connected in series. Main grid lines located on cells on the inner side are welded through welding strips. Main grid lines located on cells on the outer side are welded to bus bars. Each cell is provided with at least two main grid line sets, and each main grid line set comprises two main grid lines. The total width of each main grid line set ranges from 0.8 mm to 1.6 mm. The width of each welding strip is equal to that of each main grid line. According to the photovoltaic module, the width of an original thick main grid line is changed by adopting the thin main grid lines every two of which form a set, so that an unnecessary coverage area is eliminated, the requirement for current density distribution of the cells is met, the photoelectric converting efficiency of the photovoltaic module is improved, a smaller number of main grid lines and welding strips are used, and production cost is lowered.

Description

There is the photovoltaic module of side-by-side main grid line
Technical field
The present invention relates to solar energy generation technology field.
Background technology
Solar cell is the semiconductor device that solar energy is converted to electric energy.Grid line is the important component part of battery, and it is responsible for the photogenerated current in battery to guide to outside batteries.Though solar cell main grid line is the path of collected current, it is also the conductor that blocks light-receiving area.Appropriate design main grid line width, is conducive to reduce shielded area, improves generating efficiency.Before researching and developing manufacture solar cell, want pre-set battery parameter (output voltage of open circuit voltage, short-circuit current density, maximum functional point and output current density etc.) value to design.After battery is made, value and the design load of the actual battery behavior parameter recording have certain deviation.Therefore, the main grid linear dimension of design and desirable size also have certain deviation in advance.So, be necessary to relax main grid linear dimension on intrinsic basis.
In order to obtain required current/voltage and power output, simultaneously also in order to protect battery not to be mechanically damaged and environmental nuisance, some monolithic batteries must be connected through welding connection in series-parallel, and be packaged into assembly.At present, plumbous or its structure of unleaded welding of having no matter using is all the zinc-plated rear formation of copper strips.Quality requirement one to welding is conductance; The 2nd, soft durometer; The 3rd, solderability.Never consider that welding blocks to the assembly impact bringing of generating electricity.For this reason, the encapsulation loss of assembly is general to be greater than more than 5% sometimes all at 2-4%, has brought great economic loss to manufacturer.
Summary of the invention
Technical problem to be solved by this invention, it is the technical deficiency for above-mentioned existence, a kind of photovoltaic module with side-by-side main grid line is provided, change the width of original thicker main grid line, adopted two to be the thinner main grid line of a group, both reduced unnecessary masked area, adapt to again the electric current distribution on cell piece, improve the electricity conversion of photovoltaic module, reduced the consumption of main grid line and welding, reduced production cost.
The technical solution used in the present invention is: a kind of photovoltaic module with side-by-side main grid line is provided, comprises the cell piece of multiple series connection, the main grid line that is positioned at inner side cell piece welds by welding; Be positioned at main grid line and the convergent belt welding of the cell piece in outside; Each cell piece is equipped with at least two group main grid lines; Every group of main grid line quantity is two; The overall width of every group of main grid line is 0.8-1.6mm; Welding is identical with the width of main grid line.
Further optimize the technical program, each cell piece with the photovoltaic module of side-by-side main grid line is equipped with two groups of main grid lines; The width of every main grid line is 0.56 millimeter-0.76 millimeter.
Further optimize the technical program, each cell piece with the photovoltaic module of side-by-side main grid line is equipped with three groups of main grid lines; The width of every main grid line is 0.4 millimeter-0.6 millimeter.
Determine the generous size of main grid line according to the number of the thickness of cell piece and short circuit current.The width of general two grid lines of conventional batteries is 2 millimeters, three grid lines are 1.5 millimeters, and main grid line of the present invention, owing to having taked two parallel connections, the width of every grid line is only 1/3rd left and right of conventional batteries sheet main grid line width, and same, the width of welding is only 1/3rd left and right of traditional welding, so just reduce main grid line and the masked area of welding to cell piece, improved the photoelectric conversion efficiency of cell piece.
Further optimize the technical program, there is the photovoltaic module of side-by-side main grid line, cell piece be polycrystalline silicon battery plate or monocrystalline silicon battery sheet.
The invention has the beneficial effects as follows: the photovoltaic module with side-by-side main grid line has reduced the width of main grid line and welding, it is the main grid line of 0.4 millimeter-0.76 millimeter that the main grid line that is 2 millimeters by an original width is changed into two width, in the case of ensure to meet the thickness of cell piece and short circuit current how many, reduce on the whole the consumption of main grid line and welding, and reduce the masked area to cell piece, increase the light-receiving area of battery, improved the generating efficiency of battery.The structure that only changes printing screen can realize the technical program, needn't increase new equipment, does not change raw material, is convenient to extensive popularization.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two.
In figure, 1 cell piece, 2 main grid lines, 3 weldings, 4 convergent belts.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment mono-:
Shown in Fig. 1, have the photovoltaic module of side-by-side main grid line, comprise the cell piece 1 of multiple series connection, the main grid line 2 that is positioned at inner side cell piece 1 welds by welding 3; Be positioned at the main grid line 2 and convergent belt welding of the cell piece 1 in outside; Each cell piece 1 is equipped with two groups of main grid lines 2; Every group of main grid line 2 quantity are two; Welding 3 is identical with the width of main grid line 2; The width of every main grid line 2 is 0.56 millimeter-0.76 millimeter; Cell piece 1 is polycrystalline silicon battery plate or monocrystalline silicon battery sheet.
The width sum of one group of main grid line 2 is 1.12 millimeters-1.52 millimeters, and the width of one, the thicker main grid line that conventional photovoltaic assembly adopts is just 2 millimeters, therefore greatly reduced the consumption of main grid line 2, and main grid line 2 makes for silver paste, therefore reduced the production cost of photovoltaic module.The gap of the present embodiment cell piece 1 between two main grid lines 2, also can be subject to illumination, thereby increase light-receiving area.
Embodiment bis-:
As shown in Figure 2, have the photovoltaic module of side-by-side main grid line, comprise the cell piece 1 of multiple series connection, the main grid line 2 that is positioned at inner side cell piece 1 welds by welding 3; Be positioned at the main grid line 2 and convergent belt welding of the cell piece 1 in outside; Each cell piece 1 is equipped with three groups of main grid lines 2; Every group of main grid line 2 quantity are two; Welding 3 is identical with the width of main grid line 2; The width of every main grid line 2 is 0.4 millimeter-0.6 millimeter; Cell piece 1 is polycrystalline silicon battery plate or monocrystalline silicon battery sheet.
The welding width of original photovoltaic module is basic identical with traditional main grid line, all adopt the welding of 2 millimeters that main grid line is connected, and welding has also reduced light-receiving area for the covering of cell piece, welding 3 of the present invention is identical with the width of main grid line 2, has reduced the consumption of welding 3.

Claims (4)

1. have a photovoltaic module for side-by-side main grid line, comprise the cell piece (1) of multiple series connection, the main grid line (2) that is positioned at inner side cell piece (1) welds by welding (3); Be positioned at the main grid line (2) and convergent belt welding of the cell piece (1) in outside; It is characterized in that each cell piece (1) is equipped with at least two group main grid lines (2); Every group of main grid line (2) quantity is two; The overall width of every group of main grid line (2) is 0.8-1.6mm; Welding (3) is identical with the width of main grid line (2).
2. the photovoltaic module with side-by-side main grid line according to claim 1, is characterized in that each cell piece (1) is equipped with two groups of main grid lines (2); The width of every main grid line (2) is 0.56 millimeter-0.76 millimeter.
3. the photovoltaic module with side-by-side main grid line according to claim 1, is characterized in that each cell piece (1) is equipped with three groups of main grid lines (2); The width of every main grid line (2) is 0.4 millimeter-0.6 millimeter.
4. according to the photovoltaic module with side-by-side main grid line described in claim 2 or 3, it is characterized in that described cell piece (1) is polycrystalline silicon battery plate or monocrystalline silicon battery sheet.
CN201410159684.XA 2014-04-21 2014-04-21 Photovoltaic module with main grid lines arranged side by side Pending CN103943698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410159684.XA CN103943698A (en) 2014-04-21 2014-04-21 Photovoltaic module with main grid lines arranged side by side

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410159684.XA CN103943698A (en) 2014-04-21 2014-04-21 Photovoltaic module with main grid lines arranged side by side

Publications (1)

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CN103943698A true CN103943698A (en) 2014-07-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017000599A1 (en) * 2015-07-02 2017-01-05 苏州阿特斯阳光电力科技有限公司 Solar cell module
CN106601832A (en) * 2015-10-15 2017-04-26 浙江鸿禧能源股份有限公司 Main grid line structure of solar cell piece
CN106803521A (en) * 2015-11-25 2017-06-06 中电电气(上海)太阳能科技有限公司 A kind of low cost high powered solar cell module
CN107623049A (en) * 2017-09-14 2018-01-23 苏州携创新能源科技有限公司 A kind of ultra dense arrangement photovoltaic module

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030006730A1 (en) * 2001-06-29 2003-01-09 Shingo Tachibana Solar battery module with cover member and method of fabricating the same
CN101950761A (en) * 2010-09-29 2011-01-19 上海晶澳太阳能科技有限公司 Novel solar cell and solar photovoltaic module composed thereof
CN202749377U (en) * 2012-04-16 2013-02-20 英利能源(中国)有限公司 N-type solar cell module and N-type solar cell silicon wafer
CN203218275U (en) * 2013-05-06 2013-09-25 英利能源(中国)有限公司 Grid line electrode of solar cell sheet, solar cell sheet and solar cell panel
CN203503669U (en) * 2013-10-11 2014-03-26 浙江宝利特新能源股份有限公司 Solar cell sheet
CN203850311U (en) * 2014-04-21 2014-09-24 衡水英利新能源有限公司 Photovoltaic module with side-by-side main grid line

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030006730A1 (en) * 2001-06-29 2003-01-09 Shingo Tachibana Solar battery module with cover member and method of fabricating the same
CN101950761A (en) * 2010-09-29 2011-01-19 上海晶澳太阳能科技有限公司 Novel solar cell and solar photovoltaic module composed thereof
CN202749377U (en) * 2012-04-16 2013-02-20 英利能源(中国)有限公司 N-type solar cell module and N-type solar cell silicon wafer
CN203218275U (en) * 2013-05-06 2013-09-25 英利能源(中国)有限公司 Grid line electrode of solar cell sheet, solar cell sheet and solar cell panel
CN203503669U (en) * 2013-10-11 2014-03-26 浙江宝利特新能源股份有限公司 Solar cell sheet
CN203850311U (en) * 2014-04-21 2014-09-24 衡水英利新能源有限公司 Photovoltaic module with side-by-side main grid line

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017000599A1 (en) * 2015-07-02 2017-01-05 苏州阿特斯阳光电力科技有限公司 Solar cell module
CN106601832A (en) * 2015-10-15 2017-04-26 浙江鸿禧能源股份有限公司 Main grid line structure of solar cell piece
CN106803521A (en) * 2015-11-25 2017-06-06 中电电气(上海)太阳能科技有限公司 A kind of low cost high powered solar cell module
CN107623049A (en) * 2017-09-14 2018-01-23 苏州携创新能源科技有限公司 A kind of ultra dense arrangement photovoltaic module

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Application publication date: 20140723

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