CN111416009A - Photovoltaic module with high conversion efficiency and manufacturing method - Google Patents
Photovoltaic module with high conversion efficiency and manufacturing method Download PDFInfo
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- CN111416009A CN111416009A CN201811557366.3A CN201811557366A CN111416009A CN 111416009 A CN111416009 A CN 111416009A CN 201811557366 A CN201811557366 A CN 201811557366A CN 111416009 A CN111416009 A CN 111416009A
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- solar cell
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 28
- 238000010030 laminating Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 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
- H01L31/04—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
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
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- 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)
- Computer Hardware Design (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic module with high conversion efficiency and a manufacturing method thereof, wherein the photovoltaic module comprises a front cover plate, a front packaging layer, a solar cell sheet layer, a back packaging layer and a back cover plate which are sequentially arranged from top to bottom, the solar cell sheet layer comprises a plurality of solar cell strings, each group of solar cell strings comprises a plurality of solar cell sheets which are connected by a first conductive part, the solar cell strings are connected by a second conductive part, a first insulating part is arranged between the solar cell sheets, a second insulating part is arranged between the solar cell strings, and a third insulating part is arranged between the solar cell strings and the second conductive part. According to the invention, the insulating parts are arranged among the solar battery plates, among the solar battery strings and between the solar battery strings and the conductive parts, so that the invalid area in the module is greatly reduced, the size and the area of the module are reduced on the premise of ensuring the maximum output power of the module, and the overall conversion efficiency of the module is improved.
Description
Technical Field
The invention relates to the technical field of solar energy, in particular to a photovoltaic module with high conversion efficiency and a manufacturing method thereof.
Background
Solar energy is receiving more and more attention as a clean renewable new energy source, the application of the solar energy is more and more extensive, and the most important application of the solar energy is photovoltaic power generation at present. In the specific application, a plurality of solar cell pieces are generally formed into a solar cell module, and then all the solar cell modules are connected to form an integral current output.
With the rapid increase in installed capacity of photovoltaic modules and the limited available installation area, the market demand for high conversion efficiency photovoltaic modules is increasing. The overall conversion efficiency of the photovoltaic module is mainly related to the maximum output power and the area of the photovoltaic module, and the conversion efficiency is in direct proportion to the maximum output power and in inverse proportion to the area, so that the conversion efficiency of the photovoltaic module can be improved by increasing the maximum output power of the photovoltaic module and reducing the area of the photovoltaic module. The most direct and effective way to increase the maximum output power of the assembly includes increasing the efficiency of the battery plate and reducing the packaging loss, and the two ways are adopted by most manufacturers in the industry. The technology of the battery piece on the market is mature at present, and the space for improving the efficiency of the battery piece is limited; for reducing the package loss of the component, it is common to increase the output power of the component by reducing the optical loss and the electrical loss during the package process of the component, and the package loss of the component can be controlled at a very low level by using various techniques and materials, which is difficult to further increase. Because the creepage distance requirement between the internal charged body and the conductor and the requirement for realizing the process need to be considered when the module is designed, certain distances are reserved among the battery pieces, among the battery strings and between the battery pieces and the bus bars, so that more invalid areas exist in the module, and the conversion efficiency of the module is reduced.
Therefore, how to minimize the dead space in the module and improve the overall conversion efficiency of the module is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to solve the problems, and the area of the module is reduced by greatly reducing the distances among the solar cells, among the cell strings and between the solar cells and the bus bars, so that the overall conversion efficiency of the module is improved.
The invention discloses a photovoltaic module with high conversion efficiency, which comprises a front cover plate, a front packaging layer, a solar cell sheet layer, a back packaging layer and a back cover plate which are sequentially arranged from top to bottom, wherein the solar cell sheet layer comprises a plurality of solar cell strings, each group of solar cell strings comprises a plurality of solar cell sheets connected by a first conductive part, the solar cell strings are connected by a second conductive part, a first insulating part is arranged between the solar cell sheets, a second insulating part is arranged between the solar cell strings, and the solar cell strings and the second conductive part are provided with a third insulating part.
The solar cells in the solar cell string comprise P-type cells and N-type cells, the P-type cells and the N-type cells are alternately arranged, and the front sides or the back sides of the adjacent P-type cells and the N-type cells are connected in series by using a first conductive component.
The first insulating part between the solar cell pieces is vertical to the first conductive part, the second insulating part between the solar cell strings is parallel to the first conductive part, and the third insulating part is vertical to the first conductive part and parallel to the second conductive part.
The first conductive part and the second conductive part are tin-coated copper strips or conductive adhesives.
The first conductive feature width is less than the second conductive feature width.
The solar cell is a whole cell or 1/n cell (n is more than or equal to 2).
The front surface packaging layer and the back surface packaging layer are made of ethylene-vinyl acetate copolymer, polyolefin, polyvinyl butyral or silicone.
A method for making the photovoltaic module, comprising the steps of:
(1) arranging a plurality of P-type battery pieces and N-type battery pieces alternately, arranging a first insulating part between every two adjacent battery pieces, and connecting the adjacent battery pieces in series through a first conductive part to form a solar battery string;
(2) sequentially laying a front cover plate and a front packaging layer from bottom to top, then placing a plurality of solar cell strings on the front packaging layer, connecting the solar cell strings by using a second conductive component, placing a second insulating component between the solar cell strings, placing a third insulating component between the solar cell strings and the second conductive component, and finally sequentially placing a back packaging layer and a back cover plate;
(3) and (3) placing the laminated components into a laminating machine for laminating under high-temperature vacuum, and bonding the material components into a whole by the front surface packaging layer and the back surface packaging layer to obtain the photovoltaic module.
The invention has the following beneficial effects:
according to the photovoltaic module with high conversion efficiency and the manufacturing method thereof, the P-type battery piece and the N-type battery piece are combined for use, so that the connection mode between the battery pieces is simplified, and the connection of the adjacent battery pieces at the same side is realized; through set up insulating part between the solar wafer, between the solar cell cluster and between solar cell cluster and conductive part, reduced the invalid region in the subassembly by a wide margin for the range of solar wafer is inseparabler, has reduced the size and the area of subassembly under the prerequisite of guaranteeing the subassembly maximum output power, has promoted the whole conversion efficiency of subassembly.
Drawings
The invention is further described with reference to the following figures and detailed description.
Fig. 1 is a cross-sectional view of a high conversion efficiency photovoltaic module according to the present invention.
Fig. 2 is a partial schematic view of a photovoltaic module with high conversion efficiency according to the present invention.
The solar cell module comprises a front cover plate 1, a front packaging layer 2, a solar cell sheet layer 3, a back packaging layer 4, a back cover plate 5, a solar cell string 6, a solar cell sheet 7, a first conductive part 8, a second conductive part 9, a first insulating part 10, a second insulating part 11 and a third insulating part 12.
Detailed Description
For a further understanding of the technical features and content of the present invention, the detailed technology of the present patent will now be described as follows:
as shown in fig. 1 and 2, the photovoltaic module with high conversion efficiency in the present invention includes a front cover plate 1, a front encapsulation layer 2, a solar cell layer 3, a back encapsulation layer 4 and a back cover plate 5, which are sequentially arranged from top to bottom, wherein the solar cell layer 3 includes a plurality of solar cell strings 6, each group of solar cell strings includes a plurality of solar cell pieces 7 connected by a first conductive component 8, the solar cell strings are connected by a second conductive component 9, a first insulating component 10 is arranged between the solar cell pieces, a second insulating component 11 is arranged between the solar cell strings, and a third insulating component 12 is arranged between the solar cell strings and the second conductive component.
The solar cells in the solar cell string comprise P-type cells and N-type cells, and the two cells have the same efficiency and electrical performance parameters, so that the mismatch of the cells is avoided. In the same solar cell string, the P-type cells and the N-type cells are alternately arranged, and the arrangement enables two surfaces of the same side of the adjacent P-type cells and the adjacent N-type cells to have different polarities, for example, the polarity of the front surface of the P-type cell is negative, and the polarity of the front surface of the N-type cell is positive, so that the front surface of the P-type cell and the front surface of the N-type cell are connected by using the first conductive component, and the series connection of the two cells can be realized. In a conventional module, since the solar cells in the same solar cell string are of the same type, when the solar cells are connected in series, the front and back surfaces of two adjacent solar cells must be connected respectively by using a conductive member, and the portion of the conductive member located in the gap between the adjacent solar cells needs to be bent to reduce the fragment rate and the hidden crack of the solar cells. In the embodiment, the first conductive parts are positioned on the same side of the adjacent battery pieces, so that the arrangement of the first insulating parts between the adjacent battery pieces is very simple.
The solar cell module comprises a solar cell, a first insulating part, a second insulating part, a third insulating part and a third insulating part, wherein the first insulating part is arranged between the solar cell and the second conductive part, the first function of the insulating parts is to effectively realize electrical isolation between the solar cell and the second conductive part, and the second insulating part is to greatly reduce the sizes of gap areas between the solar cells, between the solar cell and the second conductive part, reduce the invalid area in the module, ensure that the arrangement of the solar cells is tighter, reduce the size and the area of the module, and improve the overall conversion efficiency and the power density of the module on the premise of ensuring the maximum output power of the module.
In addition, the invention also provides a manufacturing method for the photovoltaic module, which comprises the following steps:
(1) arranging a plurality of P-type battery pieces and N-type battery pieces alternately, arranging a first insulating part between every two adjacent battery pieces, and connecting the adjacent battery pieces in series through a first conductive part to form a solar battery string;
(2) sequentially laying a front cover plate and a front packaging layer from bottom to top, then placing a plurality of solar cell strings on the front packaging layer, connecting the solar cell strings by using a second conductive component, placing a second insulating component between the solar cell strings, placing a third insulating component between the solar cell strings and the second conductive component, and finally sequentially placing a back packaging layer and a back cover plate;
(3) and (3) placing the laminated components into a laminating machine for laminating under high-temperature vacuum, and bonding the material components into a whole by the front surface packaging layer and the back surface packaging layer to obtain the photovoltaic module.
The above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, based on the above disclosure of the present invention, various changes or modifications can be made in the invention according to the existing technology and knowledge in the field, combined with the basic idea technology of the present invention, and these changes or modifications should fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a high conversion efficiency photovoltaic module, includes front apron, front packaging layer, solar wafer layer, back packaging layer and the back apron that from the top down set gradually, the solar wafer layer includes a plurality of solar cell clusters, and every group solar cell cluster includes a plurality of solar wafer that use first conductive parts to connect, use second conductive parts to connect between the solar cell cluster, be equipped with first insulating part between the solar wafer, be equipped with second insulating part between the solar cell cluster, solar cell cluster and second conductive parts are equipped with third insulating part.
2. The photovoltaic module of claim 1, wherein: the solar cells in the solar cell string comprise P-type cells and N-type cells, the P-type cells and the N-type cells are alternately arranged, and the front sides or the back sides of the adjacent P-type cells and the N-type cells are connected in series by using a first conductive component.
3. The photovoltaic module of claim 1, wherein: the first insulating part between the solar cell pieces is vertical to the first conductive part, the second insulating part between the solar cell strings is parallel to the first conductive part, and the third insulating part is vertical to the first conductive part and parallel to the second conductive part.
4. The photovoltaic module of claim 1, wherein: the first conductive part and the second conductive part are tin-coated copper strips or conductive adhesives.
5. The photovoltaic module of claim 1, wherein: the first conductive feature width is less than the second conductive feature width.
6. The photovoltaic module of claim 1, wherein: the solar cell is a whole cell or 1/n cell (n is more than or equal to 2).
7. The photovoltaic module of claim 1, wherein: the front surface packaging layer and the back surface packaging layer are made of ethylene-vinyl acetate copolymer, polyolefin, polyvinyl butyral or silicone.
8. A manufacturing method of a photovoltaic module with high conversion efficiency is characterized by comprising the following steps:
(1) arranging a plurality of P-type battery pieces and N-type battery pieces alternately, arranging a first insulating part between every two adjacent battery pieces, and connecting the adjacent battery pieces in series through a first conductive part to form a solar battery string;
(2) sequentially laying a front cover plate and a front packaging layer from bottom to top, then placing a plurality of solar cell strings on the front packaging layer, connecting the solar cell strings by using a second conductive component, placing a second insulating component between the solar cell strings, placing a third insulating component between the solar cell strings and the second conductive component, and finally sequentially placing a back packaging layer and a back cover plate;
(3) and (3) placing the laminated components into a laminating machine for laminating under high-temperature vacuum, and bonding the material components into a whole by the front surface packaging layer and the back surface packaging layer to obtain the photovoltaic module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557366.3A CN111416009A (en) | 2018-12-19 | 2018-12-19 | Photovoltaic module with high conversion efficiency and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811557366.3A CN111416009A (en) | 2018-12-19 | 2018-12-19 | Photovoltaic module with high conversion efficiency and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111416009A true CN111416009A (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811557366.3A Pending CN111416009A (en) | 2018-12-19 | 2018-12-19 | Photovoltaic module with high conversion efficiency and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111416009A (en) |
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2018
- 2018-12-19 CN CN201811557366.3A patent/CN111416009A/en active Pending
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Application publication date: 20200714 |
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| WD01 | Invention patent application deemed withdrawn after publication |