CN202651170U - Back-contact solar cell sheet connecting structure - Google Patents
Back-contact solar cell sheet connecting structure Download PDFInfo
- Publication number
- CN202651170U CN202651170U CN 201220232584 CN201220232584U CN202651170U CN 202651170 U CN202651170 U CN 202651170U CN 201220232584 CN201220232584 CN 201220232584 CN 201220232584 U CN201220232584 U CN 201220232584U CN 202651170 U CN202651170 U CN 202651170U
- Authority
- CN
- China
- Prior art keywords
- main grid
- negative electrode
- cell piece
- grid line
- cell sheet
- 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.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 claims description 52
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 229910000679 solder Inorganic materials 0.000 abstract description 11
- 238000005476 soldering Methods 0.000 abstract 2
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000012528 membrane Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 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
- H01L31/04—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
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a back-contact solar cell sheet connecting structure, comprises an upper cell sheet and a lower cell sheet, wherein the upper cell sheet and the lower cell sheet are provided with the same structure, and are connected through solder strips; both the back of the upper cell sheet and the back of the lower cell sheet are provided with a positive electrode and a negative electrode; the positive electrode comprises a plurality of positive electrode main grid lines; the negative electrode comprises a negative electrode horizontal main grid line and a plurality of negative electrode vertical main grid lines; the positive electrode main grid lines and the negative electrode vertical main grid lines are in a stagger and radial arrangement; the upper end of each negative electrode vertical main grid line is connected with the negative electrode horizontal main grid line; the solder strips include a plurality of vertical solder strips and horizontal solder strips; the upper end of each vertical solder strip is connected with the lower end of each positive electrode main grid line on the upper cell sheet; the lower end of each vertical solder strip is connected with horizontal solder strips; and the horizontal solder strips are connected with the negative electrode horizontal main grid line on the lower cell sheet. The back-contact solar cell sheet connecting structure has the advantages of being able to realize automatic production, improving the efficiency for soldering the cells and producing the assemblies, being flat in the cell sheets, and being uniform in the thickness of the soldering part.
Description
Technical field
The utility model relates to technical field of solar, especially relates to a kind of back contact solar cell sheet syndeton.
Background technology
High efficiency, low cost is the main flow direction of crystal silicon solar energy battery development, business-like conventional silicon solar cell, be formed for the secondary grid line of collected current and the main grid line that is used for compiling electric current on the secondary grid line in its front, and form backplate with extracted current at its back side, but this kind structure has its limitation: although the gate line electrode area occupied is very little, still stopped part sunlight, the battery effective area of shining light is reduced, therefore the researcher has developed the back contact solar cell of front electrode being transferred to cell backside, it has been subject to the extensive concern in photovoltaic market with device architecture and the higher battery efficiency of uniqueness.
For example, Chinese patent Granted publication number: CN201994319U, Granted publication number: 2011.09.28, a kind of solar module is disclosed, many rows battery strings, EVA glued membrane and backboard that it comprises glass plate, EVA glued membrane from top to bottom, is formed by connecting by the multi-disc cell piece, adopting thickness between the cell piece on the described battery strings length direction is the copper sheet welding of 0.198 ~ 0.202mm, and the copper sheet at described battery strings two ends is fixedly connected with backboard.Its weak point is, what adopt between the cell piece on the battery strings length direction is traditional copper sheet welding, namely need weld the contact point of copper sheet and cell piece successively, so not only so that the welding efficiency between the cell piece is lower, and the difficulty of automated production are strengthened.
The utility model content
The utility model is for the low problem of welding efficiency between the solar battery sheet that solves prior art, provide a kind of simple in structure, low cost of manufacture can realize automated production and improve the back contact solar cell sheet syndeton of welding efficiency between the cell piece.
To achieve these goals, the utility model is by the following technical solutions:
A kind of back contact solar cell sheet syndeton, comprise upper cell piece and lower cell piece that structure is identical, described upper cell piece is connected by welding with lower cell piece, and the back side of upper cell piece and lower cell piece is equipped with positive electrode and negative electrode, described positive electrode comprises many positive electrode main grid lines, described negative electrode comprises the horizontal main grid line of negative electrode and the many vertical main grid lines of negative electrode, the vertical main grid line of described positive electrode main grid line and negative electrode is staggered to be spaced, the vertical main grid line of described negative electrode upper end is connected with the horizontal main grid line of negative electrode, described welding comprises many vertical weldings and horizontal welding, described vertical welding upper end is connected with positive electrode main grid line lower end on the upper cell piece, described vertical welding lower end is connected with horizontal welding, and described horizontal welding is connected with the horizontal main grid line of negative electrode on the lower cell piece.In the utility model, vertically the welding upper end is connected with extracted current with the vertical main grid line of positive electrode lower end on the upper cell piece, vertically the welding lower end is connected with horizontal welding, thereby electric current is pooled on the horizontal welding, simultaneously horizontal welding is connected with the horizontal main grid line of negative electrode on the lower cell piece, electric current on the horizontal welding is caused on the horizontal main grid line of negative electrode on the lower cell piece, so just so that two cell pieces be together in series, by horizontal welding with vertically make cooperating of welding, form coplanar connection between the lower cell piece, this syndeton makes and forms integral solder between the cell piece, namely simultaneously butt welding band welds, welding is welded on the backboard of cell piece and lower cell piece simultaneously, thereby improved welding efficiency, and integral solder can make, it is smooth that lower cell piece keeps, and can make again welding position thickness comparatively even, in addition, integral solder can also form automatic assembly line with encapsulation, can greatly improve battery component production efficiency.
As preferably, described welding is copper bar, iron bar or zink rod.Welding is copper bar, iron bar or zink rod, not only be easy to obtain, and cost is lower.
As preferably, the vertical main grid line of described negative electrode is three, on the side that wherein two are arranged on cell piece and lower cell piece respectively.The vertical main grid line of negative electrode wherein two be arranged on the cell piece side, not only be convenient to printing, and attractive in appearance.
As preferably, the horizontal main grid line of described negative electrode all is located on the top margin of cell piece and lower cell piece.So not only be convenient to printing, and attractive in appearance.
As preferably, four corners of described upper cell piece and lower cell piece all are made as chamfering.Four corners of upper and lower cell piece are made as chamfering, can increase to greatest extent illuminating area, again save silicon bar material to greatest extent, also be convenient to the assembly production of cell piece, simultaneously, chamfering can reduce the stress of edge, make silicon chip stressed more even, avoid silicon chip to produce micro-damage.
As preferably, the angle of described chamfering is 40～45 °.The angle of chamfering is 40～45 °, and the stress of edge is in the minimum zone.
Therefore, the utlity model has following beneficial effect:
(1) automated production be can realize, welding battery efficient and assembly production efficiency improved;
(2) cell piece is smooth, the welding position even thickness;
(3) simple in structure, low cost of manufacture.
Description of drawings
Fig. 1 is a kind of decomposing schematic representation of the present utility model.
Fig. 2 is a kind of structural representation of upper cell piece in the utility model.
Among the figure: upper cell piece 1, lower cell piece 2, positive electrode main grid line 3, the horizontal main grid line 4 of negative electrode,
The vertical main grid line 5 of negative electrode, vertical welding 6, horizontal welding 7.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Among the embodiment as shown in Figure 1, a kind of back contact solar cell sheet syndeton, comprise that structure is identical, and the upper cell piece 1(that four corners all are made as 45 ° of chamferings sees Fig. 2) with lower cell piece 2, upper cell piece 1 and lower cell piece 2 are connected by welding, and upper cell piece 1 all is printed on positive electrode and negative electrode with the back side of lower cell piece 2, described positive electrode comprises two positive electrode main grid lines 3, described negative electrode comprises a horizontal main grid line 4 of negative electrode and three vertical main grid lines 5 of negative electrode, the horizontal main grid line 4 of negative electrode all is imprinted on the top margin of cell piece 1 and lower cell piece 2, described positive electrode main grid line 3 and vertical main grid line 5 staggered being spaced of negative electrode, wherein two vertical main grid lines 5 of negative electrode are imprinted on the side of cell piece 1 and lower cell piece 2 respectively, the vertical main grid line of described negative electrode 5 upper ends are connected with the horizontal main grid line 4 of negative electrode, described welding is copper bar, comprise two vertical weldings 6 and a horizontal welding 7, positive electrode main grid line 3 lower ends weldering on described vertical welding 6 upper ends and the upper cell piece 1 connects, described vertical welding 6 lower ends and 7 welderings of horizontal welding connect, and described horizontal welding 7 connects with horizontal main grid line 4 welderings of the negative electrode on the lower cell piece 2.
Manufacture method of the present utility model is: upper cell piece 1 and lower cell piece 2 consistencies from top to bottom are arranged, then fitted in positive electrode main grid line 3 lower ends on vertical welding 6 upper ends and the upper cell piece 1, again the horizontal main grid line 4 of horizontal welding 7 and the negative electrode on the lower cell piece 2 is fitted, simultaneously the contact site between vertical welding 6 and the horizontal main grid line 4 of positive electrode main grid line 3, horizontal welding 7 and negative electrode is welded at last, go up like this cell piece 1 and just be cascaded with lower cell piece 2, manufacture craft is very simple.
Claims (6)
1. back contact solar cell sheet syndeton, comprise the identical upper cell piece (1) of structure and lower cell piece (2), described upper cell piece (1) is connected by welding with lower cell piece (2), and upper cell piece (1) is equipped with positive electrode and negative electrode with the back side of lower cell piece (2), described positive electrode comprises many positive electrode main grid lines (3), it is characterized in that, described negative electrode comprises the horizontal main grid line of negative electrode (4) and the many vertical main grid lines of negative electrode (5), described positive electrode main grid line (3) is spaced with the vertical main grid line of negative electrode (5) is staggered, the vertical main grid line of described negative electrode (5) upper end is connected with the horizontal main grid line of negative electrode (4), described welding comprises many vertical weldings (6) and horizontal welding (7), described vertical welding (6) upper end is connected with positive electrode main grid line (3) lower end on the upper cell piece (1), described vertical welding (6) lower end is connected with horizontal welding (7), and described horizontal welding (7) is connected with the horizontal main grid line of negative electrode (4) on the lower cell piece (2).
2. a kind of back contact solar cell sheet syndeton according to claim 1 is characterized in that, described welding is copper bar, iron bar or zink rod.
3. a kind of back contact solar cell sheet syndeton according to claim 1 is characterized in that, the vertical main grid line of described negative electrode (5) is three, on the side that wherein two are arranged on cell piece (1) and lower cell piece (2) respectively.
4. a kind of back contact solar cell sheet syndeton according to claim 1 is characterized in that, the horizontal main grid line of described negative electrode (4) all is located on the top margin of cell piece (1) and lower cell piece (2).
5. according to claim 1 and 2 or 3 or 4 described a kind of back contact solar cell sheet syndetons, it is characterized in that, described upper cell piece (1) all is made as chamfering with four corners of lower cell piece (2).
6. a kind of back contact solar cell sheet syndeton according to claim 5 is characterized in that, the angle of described chamfering is 40～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220232584 CN202651170U (en) | 2012-05-23 | 2012-05-23 | Back-contact solar cell sheet connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220232584 CN202651170U (en) | 2012-05-23 | 2012-05-23 | Back-contact solar cell sheet connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202651170U true CN202651170U (en) | 2013-01-02 |
Family
ID=47420227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220232584 Expired - Fee Related CN202651170U (en) | 2012-05-23 | 2012-05-23 | Back-contact solar cell sheet connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202651170U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117315A (en) * | 2013-03-05 | 2013-05-22 | 天津英利新能源有限公司 | Solar cell piece group, photovoltaic module and method for manufacturing solar cell pieces |
| CN103426940A (en) * | 2013-03-22 | 2013-12-04 | 连云港神舟新能源有限公司 | Electrode structure of interlaced back contact (IBC) solar cell |
| CN106165107A (en) * | 2014-04-02 | 2016-11-23 | 荷兰能源研究中心基金会 | Photovoltaic module |
| CN108963020A (en) * | 2017-05-27 | 2018-12-07 | 苏州沃特维自动化***有限公司 | A kind of solar battery sheet screening structure and photovoltaic module |
| US11978818B2 (en) | 2017-09-07 | 2024-05-07 | Longi Solar Technology (Taizhou) Co., Ltd. | Solder strip applied to shingled solar cell module |
-
2012
- 2012-05-23 CN CN 201220232584 patent/CN202651170U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117315A (en) * | 2013-03-05 | 2013-05-22 | 天津英利新能源有限公司 | Solar cell piece group, photovoltaic module and method for manufacturing solar cell pieces |
| CN103426940A (en) * | 2013-03-22 | 2013-12-04 | 连云港神舟新能源有限公司 | Electrode structure of interlaced back contact (IBC) solar cell |
| CN103426940B (en) * | 2013-03-22 | 2016-08-10 | 连云港神舟新能源有限公司 | A kind of staggered back contacts IBC solar battery sheet electrode structure |
| CN106165107A (en) * | 2014-04-02 | 2016-11-23 | 荷兰能源研究中心基金会 | Photovoltaic module |
| CN108963020A (en) * | 2017-05-27 | 2018-12-07 | 苏州沃特维自动化***有限公司 | A kind of solar battery sheet screening structure and photovoltaic module |
| CN108963020B (en) * | 2017-05-27 | 2024-03-22 | 苏州沃特维自动化***有限公司 | Solar cell arranging structure and photovoltaic module |
| US11978818B2 (en) | 2017-09-07 | 2024-05-07 | Longi Solar Technology (Taizhou) Co., Ltd. | Solder strip applied to shingled solar cell module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20200523 |