CN111261750A - Preparation process of battery string confluence structure and preparation method of photovoltaic module adopting structure - Google Patents
Preparation process of battery string confluence structure and preparation method of photovoltaic module adopting structure Download PDFInfo
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- CN111261750A CN111261750A CN202010084396.8A CN202010084396A CN111261750A CN 111261750 A CN111261750 A CN 111261750A CN 202010084396 A CN202010084396 A CN 202010084396A CN 111261750 A CN111261750 A CN 111261750A
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- conductive
- battery
- conductive structure
- battery string
- photovoltaic module
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004806 packaging method and process Methods 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 6
- 238000004080 punching Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table
-
- 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
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
- H01L31/0201—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising specially adapted module bus-bar structures
-
- 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
- H01L31/048—Encapsulation of modules
-
- 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
- Y02E10/547—Monocrystalline silicon PV 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
- 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)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a preparation process of a cell string confluence structure and a preparation method of a photovoltaic module adopting the structure, wherein a conductive film is attached to the surface of an insulating layer by utilizing a pressure roller; then, punching grooves on the composite conductive insulating strip through a blanking mechanism to separate a plurality of conductive regions so as to form a first conductive structure and a second conductive structure for battery string confluence; cutting off the composite conductive insulating strip along a cutting line by a cutting mechanism; the plurality of battery strings are arranged on the glass and the first packaging plate according to the polarities of the positive electrode and the negative electrode of the battery strings; placing a first conductive structure and a second conductive structure for converging the battery strings on the upper part and the lower part of the battery string array; the edges of the first conductive structure and the second conductive structure are aligned with the battery string or slightly exceed the edges of the battery piece; and the conductive strips on the battery string are folded by 180 degrees and welded on the five independent conductive areas of the first conductive structure and the second conductive structure. The invention saves trouble and labor, simplifies the process steps and improves the automation degree.
Description
Technical Field
The invention relates to a preparation method of a photovoltaic module battery string bus bar and a preparation method of a photovoltaic module adopting the structure, and belongs to the technical field of photovoltaics.
Background
In the existing production of crystalline silicon battery components, the battery plate is welded on the battery plate welding pad by using an interconnecting bar (or welding strip) made of tinned copper foil. And connecting a plurality of battery pieces in series by using the interconnector to form a battery string. And then arranging the plurality of battery strings on the glass and the packaging plate according to the polarities of the positive electrode and the negative electrode of the battery strings to form a battery string array. In order to form a complete circuit, the battery strings are connected in series by bus bars between the strings.
When the number of the battery strings is larger, the number of the used bus bars is larger, and the trend of a connection loop is more complicated; the required bus bars of an assembly consisting of four battery strings comprise five groups. For insulation, an insulating layer is placed under the junction of the bus bars. Some assemblies further use an insulating layer to shield the front visible bus bars in order to enhance the aesthetics of the assembly. Finally, another layer of packaging plate and a polymer back plate are placed on the packaging plate , and the photovoltaic module is packaged after a laminating process. Time and labor are wasted, the production process steps are various, and the automation degree is not high.
Disclosure of Invention
The invention aims to provide a preparation method and equipment of a photovoltaic module battery string bus bar, which are trouble-saving, labor-saving, simplified in process steps and improved in automation degree.
In order to achieve the purpose, the technical scheme of the invention is as follows: a preparation process of a battery string confluence structure comprises the following steps:
the first step is as follows: attaching the conductive film to the surface of the insulating layer by using a pressure roller;
the second step is that: then, punching grooves on the composite conductive insulating strip through a blanking mechanism to separate a plurality of independent conductive areas so as to form a first conductive structure and a second conductive structure for converging the battery strings;
the third step: and then cutting off the composite conductive insulating strip along the cutting line by a cutting mechanism.
Preferably, the device further comprises a conductive film roll and an insulating layer roll, wherein the conductive film roll is positioned above the insulating layer roll.
Preferably, a blanking die is arranged on the blanking mechanism.
When the cell string confluence structure produced by the method is used for producing the photovoltaic module, the originally complex circuit layout can be completed only by welding each cell string on the independent conductive areas of the first conductive structure and the second conductive structure, and the method is favorable for the industrial automation of the photovoltaic module in a higher degree.
A preparation method of a photovoltaic module adopting the cell string bus bar structure comprises the following steps:
the first step is as follows: arranging a plurality of battery strings on the front plate and the first packaging plate according to the polarities of the positive and negative electrodes of the battery strings to form a battery string array;
the second step is that: placing a first conductive structure and a second conductive structure for converging the battery strings on the upper part and the lower part of the battery string array; the edges of the first conductive structure and the second conductive structure are aligned with the battery string or slightly exceed the edges of the battery piece;
the third step: the conductive belt on the battery string is folded for 180 degrees and welded on the five independent conductive areas on the first conductive structure and the second conductive structure;
the fourth step: and finally, stacking a second packaging plate and a back plate on the upper part, and completing the packaging of the photovoltaic module after a laminating process.
Preferably, the material of the front plate and the back plate is one of glass, aluminum alloy, PET, ETFE, PCB or polymer material.
The photovoltaic module produced by the method can achieve the purposes of saving trouble and labor, simplifying process steps and improving automation degree.
Drawings
FIG. 1 is a mechanical schematic diagram of a cell string bus structure preparation;
FIG. 2 is a schematic diagram of a photovoltaic module cell string arrangement of the present invention;
FIG. 3 is a schematic diagram of the cell string arrangement of FIG. 2;
fig. 4 is a schematic view of the present invention placing a first conductive structure and a second conductive structure on the upper and lower portions of a battery string array;
FIG. 5 is a schematic view of the completed placement of the first and second conductive structures of FIG. 4;
fig. 6 is a schematic view of the conductive strips on the battery string of fig. 5 folded back 180 degrees;
fig. 7 is a schematic view of the package board and the polymer backplane of fig. 6.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are given in conjunction with the accompanying drawings.
As shown in fig. 1, a process for preparing a cell string bus structure includes the following steps:
the first step is as follows: the conductive film 13 is adhered to the surface of the insulating layer 9 by a pressure roller 14; then, punching a groove 16 'on the composite conductive insulating strip through a blanking mechanism 16 to separate five independent conductive regions 17 so as to form a first conductive structure 12 and a second conductive structure 12' for converging the battery strings; and then the composite conductive insulating strip is cut along a cutting line 15' by a cutting mechanism 15.
Referring to fig. 1, the production equipment of the battery string collecting structure further comprises a conductive film roll 101 and an insulating layer roll 102, wherein the conductive film roll 101 is positioned above the insulating layer roll 102, and a pressing roll 14, a cutting mechanism 15 and a blanking mechanism 16 are sequentially arranged. The conductive film 13 and the insulating layer 9 are unreeled through a conductive film roll 101 and an insulating layer roll 102, and are attached to the surface of the insulating layer 9 through a pressing roller 14 to form a conductive insulating strip, and enter a blanking mechanism 16 through a cutting mechanism 15, and a blanking die 161 is arranged on the blanking mechanism 16. By replacing the blanking die 161, the first conductive structure 12 and the second conductive structure 12 'having different shapes are manufactured, and the composite conductive insulating strip is cut along the cutting line 15' by the cutting mechanism 15.
Referring to fig. 2-7, in a method for manufacturing a photovoltaic module, a plurality of cell strings 3 are arranged on a front plate 4 and a first packaging plate 5 made of glass according to the polarities of positive and negative electrodes of the cell strings in the manner shown in fig. 2, so as to form a cell string array shown in fig. 3.
In the manner of fig. 1, to form the first conductive structure 12 of fig. 4. The blanking die 161 of the blanking mechanism 16 is replaced to form the second conductive structure 12'. The first and second conductive structures 12 and 12' for the cell string confluence are placed on the upper and lower cell sheets of the cell string 3 in the manner of fig. 4; the edges of the first and second conductive structures 12 and 12' where the cell strings converge are aligned with the cell strings 3 or slightly beyond the edges of the cell plates as shown in fig. 5 to avoid short circuits.
The conductive strips 18 on the strings are folded back 180 degrees and the independently conductive areas 17a, 17b, 17c, 17d and 17e soldered to the conductive structures 12 and 12' where the strings meet, as shown in fig. 6.
Finally, as shown in fig. 7, a second encapsulating sheet 10 and a polymer back sheet 11 are stacked thereon, and then the photovoltaic module is encapsulated by a lamination process. The front plate 4 and the back plate 11 are glass.
The conductive film 13 in the present embodiment may be made of any type of metal or non-metal conductive material.
The blanking mechanism 16 and the over-cutting mechanism 15 mentioned in the present embodiment are only an example; the method of separating the plurality of isolated conductive regions 17 can be various, including laser ablation, mechanical abrasion, chemical etching, etc. to achieve the same function.
Claims (5)
1. A preparation process of a battery string confluence structure is characterized by comprising the following steps: the method comprises the following steps:
the first step is as follows: a conductive film (13) is attached to the surface of the insulating layer (9) by a pressure roller (14);
the second step is that: punching a groove (16 ') on the composite conductive insulating strip through a blanking mechanism (16) to separate a plurality of independent conductive regions (17) so as to form a first conductive structure (12) and a second conductive structure (12') for converging the battery strings;
the third step: and then the composite conductive insulating strip is cut along a cutting line (15') by a cutting mechanism (15).
2. The process for preparing a battery string bus structure according to claim 1, wherein: the device also comprises a conductive film roll (101) and an insulating layer roll (102), wherein the conductive film roll (101) is positioned above the insulating layer roll (102).
3. The process for preparing a battery string bus structure according to claim 1, wherein: and a blanking die (161) is arranged on the blanking mechanism (16).
4. A method of making a photovoltaic module using the cell string bus bar structure of claim 1, wherein: the method comprises the following steps:
the first step is as follows: arranging a plurality of battery strings (3) on the front plate (4) and the first packaging plate (5) according to the polarities of the positive and negative electrodes of the battery strings to form a battery string array;
the second step is that: placing a first conductive structure (12) and a second conductive structure (12') for converging the battery strings on the upper part and the lower part of the battery string array; the edges of the first conductive structure (12) and the second conductive structure (12') are cut with the battery string (3) or slightly exceed the edges of the battery pieces;
the third step: the conductive belt (18) on the battery string (3) is folded by 180 degrees and welded on five independent conductive areas (17a), (17b), (17c), (17d) and (17e) on the first conductive structure (12) and the second conductive structure (12');
the fourth step: and finally, stacking a second packaging plate (10) and a back plate (11) on the upper part, and completing the packaging of the photovoltaic module after a laminating process.
5. The method of manufacturing a photovoltaic module according to claim 4, wherein: the front plate (4) and the back plate (11) are made of one of glass, aluminum alloy, PET, ETFE, PCB or polymer materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010084396.8A CN111261750B (en) | 2020-02-10 | 2020-02-10 | Preparation process of battery string converging structure and preparation method of photovoltaic module adopting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010084396.8A CN111261750B (en) | 2020-02-10 | 2020-02-10 | Preparation process of battery string converging structure and preparation method of photovoltaic module adopting structure |
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| Publication Number | Publication Date |
|---|---|
| CN111261750A true CN111261750A (en) | 2020-06-09 |
| CN111261750B CN111261750B (en) | 2023-09-19 |
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| CN202010084396.8A Active CN111261750B (en) | 2020-02-10 | 2020-02-10 | Preparation process of battery string converging structure and preparation method of photovoltaic module adopting structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024989A (en) * | 2016-07-28 | 2016-10-12 | 陈�光 | Photovoltaic module laying convergence and welding all-in-one machine and manufacturing technology thereof |
| CN106410467A (en) * | 2016-09-19 | 2017-02-15 | 中国电子科技集团公司第十八研究所 | Aluminum bus bar and processing technology |
| CN107031167A (en) * | 2017-06-02 | 2017-08-11 | 江苏坤泰机械有限公司 | Novel compounding machine |
| CN108963023A (en) * | 2017-05-27 | 2018-12-07 | 常州亚玛顿股份有限公司 | A kind of double glass photovoltaic modulies and preparation method thereof |
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2020
- 2020-02-10 CN CN202010084396.8A patent/CN111261750B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106024989A (en) * | 2016-07-28 | 2016-10-12 | 陈�光 | Photovoltaic module laying convergence and welding all-in-one machine and manufacturing technology thereof |
| CN106410467A (en) * | 2016-09-19 | 2017-02-15 | 中国电子科技集团公司第十八研究所 | Aluminum bus bar and processing technology |
| CN108963023A (en) * | 2017-05-27 | 2018-12-07 | 常州亚玛顿股份有限公司 | A kind of double glass photovoltaic modulies and preparation method thereof |
| CN107031167A (en) * | 2017-06-02 | 2017-08-11 | 江苏坤泰机械有限公司 | Novel compounding machine |
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| CN111261750B (en) | 2023-09-19 |
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