CN111739967A - Photovoltaic module and method for manufacturing same - Google Patents
Photovoltaic module and method for manufacturing same Download PDFInfo
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- CN111739967A CN111739967A CN201910226375.2A CN201910226375A CN111739967A CN 111739967 A CN111739967 A CN 111739967A CN 201910226375 A CN201910226375 A CN 201910226375A CN 111739967 A CN111739967 A CN 111739967A
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- piece
- cell
- photovoltaic module
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- battery
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title description 6
- 238000003466 welding Methods 0.000 claims abstract description 30
- 229910000679 solder Inorganic materials 0.000 claims description 36
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- 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
-
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (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)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a photovoltaic module and a manufacturing method thereof, wherein the photovoltaic module comprises a plurality of photovoltaic cells and welding strips connected to the front and back surfaces of the photovoltaic cells, the photovoltaic cells comprise a first cell and a second cell overlapped with the edge of the first cell, and a connecting piece is clamped between the first cell and the second cell. According to the photovoltaic module, the mode that the adjacent battery pieces are mutually overlapped and connected is adopted, and the welding strips and the connecting pieces are combined, so that on one hand, the battery pieces are more closely arranged, the effective daylighting area of the photovoltaic module product is increased, the efficiency is further improved, and on the other hand, the current collection capability of the surface of a single battery piece is improved due to the use of the welding strips and the connecting pieces.
Description
Technical Field
The invention relates to the field of photovoltaics, in particular to a photovoltaic module and a manufacturing method thereof.
Background
Photovoltaic modules are used to convert solar energy into electrical energy, and are generally composed of a transparent cover plate, a photovoltaic cell sheet, an insulating back plate, and an encapsulating film, and are pressed into an integral piece by a lamination process. For a conventional photovoltaic module, the photovoltaic cells in the module are generally connected by solder strips, as shown in fig. 1, that is, two adjacent photovoltaic cells A, B are connected in series by solder strips C, one end of each solder strip C is connected to the back surface of a photovoltaic cell B, and the other end of each solder strip C passes through the gap between two photovoltaic cells and is connected to the front surface of another photovoltaic cell a. And along with carrying out the more and more big demand that reduces this, the industry begins to study some neotype photovoltaic module products, and this type of photovoltaic module product need break through traditional design, changes traditional photovoltaic module's connected mode to reach cost reduction and efficiency's purpose, the market is also more and more big to the demand of this type of photovoltaic module product.
Disclosure of Invention
In view of the above, the present invention provides a photovoltaic module and a method for manufacturing the same, so as to improve the electrical performance of the photovoltaic module in the prior art and reduce the cost.
Specifically, the invention is realized by the following technical scheme: the utility model provides a photovoltaic module, includes a plurality of photovoltaic cell pieces and connects in the solder strip just, the back of photovoltaic cell piece, the front of photovoltaic cell piece be equipped with a plurality of be parallel to each other and with the positive main grid that the solder strip is connected, the photovoltaic cell piece include first battery piece and with the second battery piece of first battery piece edge overlapping, just it is equipped with a connecting piece to press from both sides between first battery piece and the second battery piece.
Further, the connecting piece is simultaneously connected with the welding strip on the front surface of the first battery piece and the welding strip on the back surface of the second battery piece.
Furthermore, the cross section of the welding strip is circular, and 5 or more than 5 welding strips are distributed on the front surface and the back surface of the first battery piece and the second battery piece respectively.
Further, the first battery piece and the second battery piece form an elongated overlapping area at the overlapping position, the connecting piece is located in the overlapping area, the width of the connecting piece is larger than that of the overlapping area, and the length of the connecting piece does not exceed that of the overlapping area.
Furthermore, the connecting piece is in the shape of a long strip and thin sheet, is arranged on the edge of the front side of the first battery piece, and is connected with all the welding strips on the front side of the first battery piece in series.
Furthermore, the connecting piece is in a shape of a long strip and thin sheet, is arranged on the edge of the back face of the second battery piece, and is connected with all the welding strips on the back face of the second battery piece in series.
Further, the connecting piece is connected with the tail end of each welding strip, and the extending direction of the connecting piece is perpendicular to the extending direction of the welding strips.
Further, the length of the connecting piece is greater than or equal to the distance between two welding strips which are farthest away on the first battery piece or the second battery piece.
Further, the thickness of the connecting piece is 0.1-0.2 mm.
The invention also provides a photovoltaic module manufacturing method, which comprises the following steps:
providing a first battery piece and a second battery piece;
arranging a plurality of welding strips on the first battery piece and cutting the welding strips along the edge of the first battery piece;
arranging a connecting piece at the edge of the first battery piece, and enabling the connecting piece to be lapped with the tail end of each welding strip;
and overlapping the edge of the second battery piece above the edge of the first battery piece and pressing the connecting piece.
Further, the edge of the second cell piece is overlapped above the edge of the first cell piece, and the method specifically comprises the following steps:
firstly, additionally taking a plurality of welding strips and lapping one end of each welding strip to the connecting piece;
and then, placing the second battery piece above the welding strips, and overlapping the edge of the second battery piece on the edge of the first battery piece.
According to the invention, by adopting a mode of mutually overlapping and connecting adjacent battery pieces and combining the application of the welding strips and the connecting pieces, on one hand, the battery pieces are more closely arranged, the effective daylighting area of a photovoltaic module product is increased, and further the efficiency is improved, on the other hand, the current collection capability of the surface of a single battery piece is improved due to the use of the welding strips and the connecting pieces, the usage amount of surface silver paste is also reduced, and the photovoltaic module is suitable for a high-efficiency multi-main-grid (MBB) photovoltaic module, so that the cost is further reduced, and the purpose of high-efficiency power generation is realized.
Drawings
Fig. 1 is a schematic view of a connection between adjacent photovoltaic cells in a photovoltaic module according to the prior art.
Fig. 2 is a schematic view of a front side connection between adjacent photovoltaic cells in a photovoltaic module according to the present invention.
Fig. 3 is a schematic side view of the connection between adjacent photovoltaic cells in a photovoltaic module according to the present invention.
Fig. 4 is a partial schematic view of a method of manufacturing a photovoltaic module according to the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Referring to fig. 2 and 3, the present invention provides a photovoltaic module, which includes a plurality of photovoltaic cells 100, solder strips 200 connected to the front and back sides of the photovoltaic cells 100, and connecting members 300 connected between the two photovoltaic cells 100. The photovoltaic cell pieces 100 are connected through the connecting piece 300, and the solder strip 200 is connected with the connecting piece 300, so that current conduction between the two photovoltaic cell pieces 100 is realized. A preferred embodiment of the present invention is described in detail below.
The photovoltaic cell piece 100 is provided with a front surface 101 and a back surface 102, the front surface 101 is provided with 5 or more front surface main grids, the back surface 102 is provided with 5 or more back surface main grids, and the front surface main grids and the back surface main grids are identical in number and are in one-to-one correspondence. As shown in fig. 3, in the present embodiment, the edges of two adjacent photovoltaic cells 100 (i.e. the first cell 10 and the second cell 20) are overlapped and connected, and an elongated overlapped region (i.e. the overlapped portion of the two cells) is formed between the two photovoltaic cells 100, i.e. the edge of the second cell 20 is overlapped above the edge of the adjacent first cell 10, so that the second cell 20 is inclined at a certain angle, which is different from the arrangement manner of the photovoltaic cells 100 in the conventional photovoltaic module.
The solder strip 200 is connected to the front main grid and the back main grid of the photovoltaic cell 100, and the cross section of the solder strip 200 is circular, which is different from the conventional flat solder strip 200, so that the solder strip 200 of the present invention has a thinner width and less shielding on the surface of the photovoltaic cell 100. The solder strip 200 extends from one side edge of the photovoltaic cell piece 100 to the other side edge of the photovoltaic cell piece 100, so that the current collection is realized.
The connecting member 300 is in the shape of a strip and a sheet, is disposed at the edge of the photovoltaic cell 100, and has a width greater than the diameter of the solder strip 200. The connecting member 300 is disposed at the edge of the front side 101 of the photovoltaic cell 100 and connected to the end of each solder strip 200 on the front side 101 of the photovoltaic cell, and the extending direction of the connecting member 300 is perpendicular to the extending direction of the solder strip 200, as shown in fig. 2 and 3, after two adjacent photovoltaic cells 100 are overlapped through the edge, the connecting member 300 is sandwiched between the two photovoltaic cells 100, so as to connect the solder strips 200 on the front side 101 and the back side 102 between the two photovoltaic cells 100. In this way, in two adjacent photovoltaic cells 100, the current collected by each front main grid on the first cell 10 is collected by the solder strip 200 on the front side 101 to the connecting member 300 at the edge of the front side 101 of the first cell 10, and then transmitted to the solder strip 200 on the back side 102 of the second cell 20 through the connecting member 300, so that the front side 101 of the first cell 10 and the back side 102 of the second cell 20 are electrically conducted.
It should be noted that the length of the connecting member 300 is greater than or equal to the distance between the two solder strips 200 that are farthest away from each other on the photovoltaic cell 100, so that the connecting member 300 can connect all the solder strips 200 in series. The connecting member 300 is clamped between the edge of the first battery piece 10 and the edge of the second battery piece 20, and the width of the connecting member 300 is slightly larger than the width of the overlapping region, so that the side edge of the connecting member 300 extends beyond the overlapping region and is exposed on the front surface 101 of the first battery piece 10 and/or the back surface 102 of the second battery piece 20, as shown in fig. 3, and the thickness of the connecting member 300 is preferably 0.1-0.2 mm.
The invention also provides a photovoltaic module manufacturing method, which comprises the following steps:
s1: providing a first battery piece 10 and a second battery piece 20;
s2: arranging a plurality of welding strips 200 on the first battery piece 10 and cutting the welding strips 200 along the edge of the first battery piece 10;
s3: disposing a connection member 300 at an edge of the first cell piece 10, and overlapping the connection member 300 to an end of each solder ribbon 200 (see fig. 4);
s4: the edge of the second battery sheet 20 is overlapped over the edge of the first battery sheet 10 and pressed against the connection member 300.
The step S4 of "superimposing the edge of the second cell piece 20 over the edge of the first cell piece 10" specifically includes (see fig. 4):
s41: firstly, additionally taking a plurality of welding strips 200 and lapping one end of each welding strip 200 to the connecting piece 300;
s42: then, the second battery piece 20 is placed above the solder strips 200, and the edge of the second battery piece 20 is overlapped on the edge of the first battery piece 10.
In summary, the invention adopts a manner of mutually overlapping and connecting adjacent battery pieces, and combines the connection manner of the solder strip 200 and the connecting piece 300, so that on one hand, the battery pieces are more closely arranged, the effective daylighting area of the photovoltaic module product is increased, and the efficiency is further improved, on the other hand, the current collection capability of the surface of a single battery piece is improved due to the use of the solder strip 200 and the connecting piece 300, the usage amount of surface silver paste is also reduced, and the solar photovoltaic module is applicable to a high-efficiency multi-main-grid (MBB) photovoltaic module, and further the cost is reduced, and the purpose of high-efficiency power generation is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. The utility model provides a photovoltaic module, includes a plurality of photovoltaic cell pieces and connects in the solder strip at photovoltaic cell piece just, the back of photovoltaic cell piece, the front of photovoltaic cell piece be equipped with a plurality of be parallel to each other and with the positive main grid that the solder strip is connected, its characterized in that, the photovoltaic cell piece include first battery piece and with the second battery piece of first battery piece edge overlapping, just press from both sides between first battery piece and the second battery piece and be equipped with a connecting piece.
2. The photovoltaic module of claim 1, wherein the connector connects the solder ribbon on the front side of the first cell piece and the solder ribbon on the back side of the second cell piece simultaneously.
3. The photovoltaic module according to claim 2, wherein the cross section of the solder strip is circular, and 5 or more solder strips are respectively distributed on the front and back surfaces of the first cell piece and the second cell piece.
4. The photovoltaic module according to claim 3, wherein the first cell piece and the second cell piece form an elongated overlapping region at the overlapping portion, the connecting member is located in the overlapping region and has a width larger than that of the overlapping region, but a length not exceeding that of the overlapping region.
5. The photovoltaic module according to claim 4, wherein the connecting member is in the form of an elongated thin plate, is disposed at the edge of the front surface of the first cell, and connects all the solder strips on the front surface of the first cell in series.
6. The photovoltaic module according to claim 4, wherein the connecting member is in the form of an elongated thin plate, and is disposed on the edge of the back surface of the second cell piece and connects all the solder strips on the back surface of the second cell piece in series.
7. A photovoltaic module according to claim 5 or claim 6, wherein the connector is connected to the end of each solder strip and the connector extends in a direction perpendicular to the direction of extension of the solder strips.
8. The photovoltaic module according to claim 3, wherein the length of the connecting member is greater than or equal to the distance between two solder strips on the first cell piece or the second cell piece which are farthest away.
9. The photovoltaic module of claim 8 wherein the thickness of the connector is 0.1 to 0.2 mm.
10. A method of manufacturing a photovoltaic module, comprising the steps of:
providing a first battery piece and a second battery piece;
arranging a plurality of welding strips on the first battery piece and cutting the welding strips along the edge of the first battery piece;
arranging a connecting piece at the edge of the first battery piece, and enabling the connecting piece to be lapped with the tail end of each welding strip;
and overlapping the edge of the second battery piece above the edge of the first battery piece and pressing the connecting piece.
11. The method of manufacturing a photovoltaic module according to claim 10, wherein superimposing the edge of the second cell piece over the edge of the first cell piece comprises:
firstly, additionally taking a plurality of welding strips and lapping one end of each welding strip to the connecting piece;
and then, placing the second battery piece above the welding strips, and overlapping the edge of the second battery piece on the edge of the first battery piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910226375.2A CN111739967A (en) | 2019-03-25 | 2019-03-25 | Photovoltaic module and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910226375.2A CN111739967A (en) | 2019-03-25 | 2019-03-25 | Photovoltaic module and method for manufacturing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111739967A true CN111739967A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910226375.2A Pending CN111739967A (en) | 2019-03-25 | 2019-03-25 | Photovoltaic module and method for manufacturing same |
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Citations (6)
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| US20110197947A1 (en) * | 2008-03-20 | 2011-08-18 | Miasole | Wire network for interconnecting photovoltaic cells |
| JP2012054287A (en) * | 2010-08-31 | 2012-03-15 | Shin Etsu Chem Co Ltd | Solar cell module |
| CN107195713A (en) * | 2017-06-06 | 2017-09-22 | 张家港协鑫集成科技有限公司 | Photovoltaic imbrication component |
| CN108963020A (en) * | 2017-05-27 | 2018-12-07 | 苏州沃特维自动化系统有限公司 | A kind of solar battery sheet screening structure and photovoltaic module |
| CN109309135A (en) * | 2018-11-09 | 2019-02-05 | 武宇涛 | Photovoltaic cell mould group and preparation method thereof |
| CN209747533U (en) * | 2019-03-25 | 2019-12-06 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
-
2019
- 2019-03-25 CN CN201910226375.2A patent/CN111739967A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| US20110197947A1 (en) * | 2008-03-20 | 2011-08-18 | Miasole | Wire network for interconnecting photovoltaic cells |
| JP2012054287A (en) * | 2010-08-31 | 2012-03-15 | Shin Etsu Chem Co Ltd | Solar cell module |
| CN108963020A (en) * | 2017-05-27 | 2018-12-07 | 苏州沃特维自动化系统有限公司 | A kind of solar battery sheet screening structure and photovoltaic module |
| CN107195713A (en) * | 2017-06-06 | 2017-09-22 | 张家港协鑫集成科技有限公司 | Photovoltaic imbrication component |
| CN109309135A (en) * | 2018-11-09 | 2019-02-05 | 武宇涛 | Photovoltaic cell mould group and preparation method thereof |
| CN209747533U (en) * | 2019-03-25 | 2019-12-06 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
Non-Patent Citations (1)
| Title |
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| 郑炯;韩帅;孙仲刚;麻超;王坤;荣丹丹;: "新型光伏焊带及其在提升光伏组件发电功率中的应用", 可再生能源, no. 11, 20 November 2016 (2016-11-20) * |
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| CB02 | Change of applicant information |
Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Applicant after: CSI Cells Co.,Ltd. Applicant after: Changshu Artes Sunshine Power Technology Co.,Ltd. Applicant after: Atlas sunshine Power Group Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Applicant before: CSI Cells Co.,Ltd. Applicant before: Changshu Artes Sunshine Power Technology Co.,Ltd. Applicant before: CSI SOLAR POWER GROUP Co.,Ltd. |
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