CN114759114A - Preparation method of photovoltaic module and photovoltaic module - Google Patents
Preparation method of photovoltaic module and photovoltaic module Download PDFInfo
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- CN114759114A CN114759114A CN202011579754.9A CN202011579754A CN114759114A CN 114759114 A CN114759114 A CN 114759114A CN 202011579754 A CN202011579754 A CN 202011579754A CN 114759114 A CN114759114 A CN 114759114A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000005476 soldering Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000007650 screen-printing Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000007639 printing Methods 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 230000004907 flux Effects 0.000 description 5
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000005245 sintering 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
- H01L31/0508—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 the interconnection means having a particular shape
-
- 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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- 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 application provides a preparation method of a photovoltaic module and the photovoltaic module, wherein the preparation method comprises the steps of providing a battery string and a bus bar; laying a plurality of bus bars on a bearing platform, and printing the welding-assistant material to specific positions on the surfaces of the bus bars by adopting a set screen printing plate; and then the bus bar is positioned on the back of the battery string, and the bus bar and the battery string are welded into a whole by heating. The preparation method and the photovoltaic module can quickly transfer the soldering material to the specific position of the bus bar, the operation is more convenient and simpler, the process time is reduced, and the production cost is reduced.
Description
Technical Field
The application relates to the technical field of photovoltaic manufacturing, in particular to a preparation method of a photovoltaic module and the photovoltaic module.
Background
The crystalline silicon solar cell is still the most widely applied photovoltaic product in domestic and foreign markets at present due to lower raw material cost and relatively mature technology. The conventional photovoltaic module adopts a welding strip to connect a plurality of solar cells in series to form a corresponding cell string, light irradiating the gap position of the adjacent solar cells cannot be effectively utilized, the utilization rate of the light is influenced, and the material and packaging cost is increased. Compared with the traditional photovoltaic module, the laminated assembly cancels the inter-sheet distance, increases the effective power generation area, and can arrange and place more cells under the same condition, thereby greatly improving the output power of the assembly; moreover, the tiling technology can be combined with various high-efficiency batteries for application, so that the assembly efficiency is further improved.
The preparation of the laminated assembly comprises the steps of cutting the whole battery piece printed with the set electrode pattern to obtain corresponding strip-shaped battery pieces, and sequentially overlapping the strip-shaped battery pieces to form a battery string. And conductive adhesive is arranged in the overlapping area of the adjacent strip-shaped battery pieces, and the mechanical bonding and the electrical connection of the adjacent strip-shaped battery pieces are realized through the conductive adhesive. Because the number of the strip-shaped battery pieces is large, the auxiliary electrodes are usually arranged on the back surfaces of part of the strip-shaped battery pieces, and the corresponding battery strings are divided into a plurality of sub-strings through the bus bars, so that the working voltage and the abnormal risk of the assembly are reduced. In order to avoid the poor welding of the auxiliary electrodes, it is usually necessary to apply a solder paste to each auxiliary electrode by using a dispenser before the welding of the bus bar and the auxiliary electrode. In the preparation process of the laminated assembly, the time of the process is about 1min, and the production rhythm on the site is greatly influenced.
In view of the above, a method for manufacturing a photovoltaic device and a photovoltaic device are needed.
Disclosure of Invention
The invention aims to provide a preparation method of a photovoltaic module and the photovoltaic module, which can save time, reduce production cost and facilitate field operation.
In order to achieve the above object, the present application provides a method for manufacturing a photovoltaic module, which mainly comprises:
providing a battery string and a bus bar;
laying a plurality of bus bars on a bearing platform;
printing a welding assistant material to a specific position on the surface of the bus bar by using a set screen printing plate;
and positioning the bus bar on the back of the battery string in an aligning way, and heating to enable the bus bar and the battery string to be welded into a whole.
As a further improvement of the embodiment of the present application, the "laying a plurality of bus bars on a bearing platform" means that the plurality of bus bars are laid on the bearing platform in a parallel arrangement manner, and at least one ends of the plurality of bus bars are flush with each other.
As a further improvement of the embodiment of the application, the preparation of the battery string comprises the steps of sequentially arranging and serially connecting a plurality of battery pieces along a first direction, wherein the back of at least one of the battery pieces is provided with an auxiliary electrode;
the preparation method further comprises the step of sequentially arranging at least two rows of battery strings at intervals along a second direction perpendicular to the first direction, wherein the bus bars are used for connecting the adjacent battery strings.
As a further improvement of the embodiment of the application, the number of the battery pieces provided with the auxiliary electrodes in the battery string is set to be at least two, and the positions of the battery pieces provided with the auxiliary electrodes in the adjacent battery strings are corresponding.
As a further improvement of the embodiment of the application, the battery piece is provided with two side edges which are oppositely arranged along a first direction, the surfaces of the two sides of the battery piece are respectively provided with a front main grid and a back main grid, and the front main grid and the back main grid are respectively arranged adjacent to the two side edges; the preparation of the battery string comprises the steps of stacking the back main grid of one battery piece on the front main grid of the other battery piece, and applying conductive adhesive in the overlapping area of the two corresponding battery pieces, so that the front main grid and the back main grid in the overlapping area are both in contact with the conductive adhesive.
As a further improvement of the embodiment of the present application, the auxiliary electrode is disposed at a middle position of the battery piece along a first direction, and the auxiliary electrode includes a plurality of pads disposed at intervals along a second direction; the contraposition placement means that the specific positions on the surfaces of the bus bars are controlled to be in one-to-one correspondence with the bonding pads, then the bus bars are placed on the back of the battery strings, and the welding assistant materials are located between the bus bars and the battery strings.
As a further improvement of the embodiment of the application, the bus bar is flat, and the width of the bus bar is set to be 2-10 mm; the soldering assistant material adopts solder paste.
As a further improvement of the embodiment of the application, the screen plate is provided with a long-strip-shaped opening which is arranged along the direction perpendicular to the extending direction of the bus bar, and the width of the opening is set to be 2-10 mm.
As a further improvement of the embodiment of the present application, the manufacturing method further includes connecting an end bus bar at an end of the battery string; bypass diodes are connected between adjacent bus bars, between the bus bars and end bus bars.
The application also provides a photovoltaic module prepared by the preparation method.
The beneficial effect of this application is: by adopting the preparation method and the photovoltaic module, the welding-assistant material is quickly transferred to the specific position of the bus bar in batches by adopting the screen printing plate, and then the bus bar and the auxiliary electrode are welded, so that the operation is more convenient and simpler, the process time is reduced, the production cost is reduced, and the method is suitable for production and processing of the laminated tile module.
Drawings
FIG. 1 is a schematic view of a portion of a photovoltaic module according to the present application;
FIG. 2 is a schematic view of the overlapping of adjacent cells in a string of cells of a photovoltaic module of the present application;
FIG. 3 is a schematic diagram of a back side structure of interconnected cells in a string of cells of a photovoltaic module of the present application;
FIG. 4 is a schematic main flow diagram of a method of making a photovoltaic module according to the present application;
fig. 5 is a schematic view of the operation of transferring the flux material onto the bus bar in the method of manufacturing a photovoltaic module according to the present application.
101-a battery string; 10-a battery piece; 10' -interconnected cells; 11-front side main grid; 12-a back side main grid; 13-an auxiliary electrode; 131-a pad; 20-conductive adhesive; 102-a bus bar; 200-a load-bearing platform; 300-screen printing; 301-opening.
Detailed Description
The present application will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the above embodiments, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the present embodiments are included in the scope of the present invention.
Referring to fig. 1 to 3, the photovoltaic module provided by the present application includes a plurality of cell strings 101, where the cell strings 101 include a plurality of cells 10 arranged in sequence along a first direction, and the cell strings 101 are arranged at intervals in sequence along a second direction perpendicular to the first direction.
The cell 10 refers to a crystalline silicon solar cell, which is generally configured in a rectangular shape or a rectangular shape with a chamfer. The battery piece 10 is provided with two side edges which are oppositely arranged along a first direction, the surfaces of the two sides of the battery piece 10 are respectively provided with a front main grid 11 and a back main grid 12, and the front main grid 11 and the back main grid 12 are respectively adjacent to the two side edges. Here, the photovoltaic module is a laminated module, the cell sheets 10 in the cell string 101 are sequentially overlapped along a first direction, that is, the back main grid 12 of one cell sheet 10 is stacked on the front main grid 11 of another cell sheet 10 to realize electrical connection therebetween, and the front main grid 11 and the back main grid 12 are preferably arranged not to exceed the overlapping area of the two corresponding cell sheets 10. Generally, the battery piece 10 is a bar-shaped battery piece with the same specification, which is obtained by dividing a whole piece of crystalline silicon solar battery.
The plurality of battery pieces 10 in the battery string 10 include at least one interconnected battery piece 10', the back of the interconnected battery piece 10' is provided with an auxiliary electrode 13, the auxiliary electrode 13 is arranged in the middle of the interconnected battery piece 10 'along a first direction, and the interconnected battery pieces 10' adjacent to the battery string 101 are correspondingly arranged along a second direction. The photovoltaic module further comprises a bus bar 102 connecting the adjacent cell strings 101, wherein the bus bar 102 is welded on the auxiliary electrode 13 of the interconnected cell piece 10' to connect the adjacent cell strings 101 into a whole. Specifically, the auxiliary electrode 13 includes a plurality of pads 131 sequentially arranged along the second direction at intervals, and the pads 131 are usually made of a predetermined conductive silver paste by screen printing and sintering; the bus bar 102 is generally provided in a flat shape with a width of 2 to 10mm, and has a soldering region soldered to the pad 131. It should be noted that, for convenience of selection and arrangement of the battery pieces 10, the auxiliary electrode 13 may also be disposed on the back side of the battery piece 10, which is not welded to the bus bar 102, in the battery string 101. That is, each of the battery cells 10 provided with the auxiliary electrode 13 is not referred to as an interconnected battery cell 10', and the interconnected battery cell 10' refers to the battery cell 10 provided with the auxiliary electrode 13 on the back surface and mutually welded to the bus bar 102.
Of course, the photovoltaic module further includes end bus bars (not shown) disposed at the ends of the cell strings 101, and bypass diodes (not shown) are connected between adjacent bus bars 102, and between the bus bars 102 and the end bus bars. On the other hand, the number of the battery pieces 10 sequentially connected in series in the battery string 101 is large, the battery string 101 is divided into a plurality of sub-strings through the bus bar 102, and then the sub-strings are connected in parallel with different bypass diodes, so that more effective circuit protection is realized.
Referring to fig. 4 and 5, a method for manufacturing a photovoltaic module provided by the present application includes:
providing a battery string 101 and a bus bar 102;
laying a plurality of bus bars 102 on the carrying platform 200;
printing a flux material to a specific position on the surface of the bus bar 102 by using a predetermined screen 300;
and then, the bus bar 102 is aligned and placed on the back of the battery string 101, and the bus bar 102 and the battery string 101 are welded into a whole by heating.
The preparation of the cell string 101 includes arranging a plurality of cell sheets 10 in series along a first direction, and at least one of the cell sheets 10 has an auxiliary electrode 13 on the back surface thereof. The preparation method further comprises the step of arranging at least two rows of the battery strings 101 at intervals in sequence along a second direction perpendicular to the first direction, wherein the bus bars 102 are used for connecting the adjacent battery strings 101.
The number of the battery strings 101 may be generally set to six columns; the number of the battery pieces 10 provided with the auxiliary electrodes 13 in the battery string 101 is set to be at least two, and the positions of the battery pieces 10 provided with the auxiliary electrodes 13 in the adjacent battery strings 101 are corresponding. Here, the "cell piece 10 provided with the auxiliary electrode 13" refers specifically to the interconnected cell pieces 10 'for connecting the bus bars 102, i.e., each of the cell strings 101 preferably includes at least two interconnected cell pieces 10'. Generally, the interconnected battery cells 10' are arranged in two or three pieces, which uniformly divide the battery string 101 into three or four sub-strings.
The preparation of the battery string 101 specifically comprises the steps of stacking the back main grid 12 of one battery piece 10 on the front main grid 11 of another battery piece 10, and arranging the conductive adhesive 20 in the overlapping area of the adjacent battery pieces 10. The conductive adhesive 20 can be applied to the front surface of the battery piece 10, and can also be applied to the back surface of the battery piece 10, and the conductive adhesive 20 is preferably arranged in a continuous strip shape; the front main grid 11 and the back main grid 12 in the overlapping area are both in contact with the conductive adhesive 20, and the front main grid 11, the back main grid 12 and the conductive adhesive 20 do not exceed the overlapping area of the two corresponding battery pieces 10.
The foregoing "laying a plurality of bus bars 102 on the carrying platform 200" means that a plurality of bus bars 102 are laid on the carrying platform 200 in parallel, and at least one end of a plurality of bus bars 102 is flush with each other. Here, the plurality of bus bars 102 are cut to have a uniform length, that is, the plurality of bus bars 102 are arranged in a manner that both ends are aligned. The screen 300 has an elongated opening 301 arranged in a direction perpendicular to the extending direction of the bus bar 102, and the width of the opening 301 is set to be 2-10 mm.
The flux material is used to improve the stability of the soldering between the bus bar 102 and the soldering electrode 13, and solder paste is usually used, and the soldering of the bus bar 102 needs to be completed within a predetermined time (e.g., 30min) after the solder paste is printed on the bus bar 102 by the screen 300. The foregoing "positioning" means controlling specific positions on the surface of the bus bar 102 to correspond to the pads 131 on the interconnected battery pieces 10', and then positioning the bus bar 102 on the back of the battery string 101, such that the soldering material is located between the bus bar 102 and the battery string 101. That is, the flux material is printed on one side surface of the bus bar 102, and the flux material-printed side surface of the bus bar 102 is disposed toward the battery string 101 in a subsequent soldering process.
It should be noted that the specific position of the bus bar 102 can be understood as a soldering region where the bus bar 102 is soldered to the battery cell 10, that is, the soldering region is printed with a layer of solder paste. In practical applications, the area of the surface of the bus bar 102 printed with the solder paste may be set to be smaller than the soldering area, that is, the solder paste is printed only on the partial area of the bus bar 102 to be soldered, that is, the area of the specific position may be smaller than the soldering area.
In addition, the method for manufacturing a photovoltaic module further includes attaching a terminal bus bar to an end of the cell string 101; and bypass diodes are connected between adjacent ones of the bus bars 102, between the bus bars 102 and the end bus bars. The plurality of battery strings 101 are connected into a whole through the bus bars 102 and the end bus bars, and the battery pieces 10 in the corresponding areas of the battery strings 101 are protected through a plurality of bypass diodes, and the specific installation process of the bypass diodes is not described in detail.
In summary, according to the manufacturing method and the photovoltaic module of the present application, the plurality of bus bars 102 are arranged on the supporting platform, the soldering assistant material is rapidly transferred to the soldering area of the bus bars 102 in batch by using the screen 300, and then the bus bars 102 and the auxiliary electrode 13 are soldered without applying the corresponding soldering assistant material on the surface of the auxiliary electrode 13 one by one. The preparation method is more convenient and simpler to operate, reduces the process time and the production cost, and is suitable for the production and processing of the laminated assembly.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.
Claims (10)
1. A preparation method of a photovoltaic module is characterized by comprising the following steps:
providing a battery string and a bus bar;
laying a plurality of bus bars on a bearing platform;
printing a welding assistant material to a specific position on the surface of the bus bar by using a set screen printing plate;
and positioning the bus bar on the back of the battery string in an aligning way, and heating to enable the bus bar and the battery string to be welded into a whole.
2. The method of claim 1, wherein: the term "laying a plurality of busbars on a bearing platform" means that a plurality of busbars are laid on the bearing platform in a parallel arrangement mode, and at least one ends of the busbars are flush with each other.
3. The method of claim 1, wherein: the preparation of the battery string comprises the steps of sequentially arranging a plurality of battery pieces along a first direction and serially connecting the battery pieces, wherein the back of at least one battery piece is provided with an auxiliary electrode;
the preparation method further comprises the step of sequentially arranging at least two rows of battery strings at intervals along a second direction perpendicular to the first direction, wherein the bus bars are used for connecting the adjacent battery strings.
4. The production method according to claim 3, characterized in that: the number of the battery pieces provided with the auxiliary electrodes in the battery strings is set to be at least two, and the positions of the battery pieces provided with the auxiliary electrodes in the adjacent battery strings are corresponding to each other.
5. The production method according to claim 3, characterized in that: the battery piece is provided with two side edges which are oppositely arranged along a first direction, the surfaces of the two sides of the battery piece are respectively provided with a front main grid and a back main grid, and the front main grid and the back main grid are respectively adjacent to the two side edges; the preparation of the battery string comprises the steps of stacking the back main grid of one battery piece on the front main grid of the other battery piece, and applying conductive adhesive in the overlapping area of the two corresponding battery pieces, so that the front main grid and the back main grid in the overlapping area are both contacted with the conductive adhesive.
6. The production method according to claim 3, characterized in that: the auxiliary electrode is arranged in the middle of the battery piece along a first direction and comprises a plurality of welding pads arranged at intervals along a second direction; the contraposition placement means that the specific positions on the surfaces of the bus bars are controlled to be in one-to-one correspondence with the bonding pads, then the bus bars are placed on the back of the battery strings, and the welding assistant materials are located between the bus bars and the battery strings.
7. The method of claim 1, wherein: the bus bar is flat, and the width of the bus bar is set to be 2-10 mm; the soldering assistant material adopts solder paste.
8. The method of claim 1, wherein: the screen printing plate is provided with a long strip-shaped opening which is perpendicular to the extending direction of the bus bar, and the width of the opening is set to be 2-10 mm.
9. The method of claim 1, wherein: the manufacturing method further includes connecting a terminal bus bar at an end of the battery string; bypass diodes are connected between adjacent bus bars, between the bus bars and end bus bars.
10. A photovoltaic module characterized in that: the photovoltaic module is prepared by the preparation method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579754.9A CN114759114A (en) | 2020-12-28 | 2020-12-28 | Preparation method of photovoltaic module and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011579754.9A CN114759114A (en) | 2020-12-28 | 2020-12-28 | Preparation method of photovoltaic module and photovoltaic module |
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| CN114759114A true CN114759114A (en) | 2022-07-15 |
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| CN202011579754.9A Pending CN114759114A (en) | 2020-12-28 | 2020-12-28 | Preparation method of photovoltaic module and photovoltaic module |
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| CN108682711A (en) * | 2018-06-11 | 2018-10-19 | 刘金花 | High-efficiency photovoltaic solder strip and its welding method and the screen printing apparatus for implementing this method |
| CN109301004A (en) * | 2018-09-30 | 2019-02-01 | 东方日升新能源股份有限公司 | A kind of imbrication photovoltaic module and manufacturing method |
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| CN209491425U (en) * | 2018-12-25 | 2019-10-15 | 唐山海泰新能科技股份有限公司 | A kind of busbar scaling powder automatic coating device |
| CN210575972U (en) * | 2019-10-29 | 2020-05-19 | 东方日升新能源股份有限公司 | Slicing and tile-stacking assembly |
| CN210575984U (en) * | 2019-10-31 | 2020-05-19 | 协鑫集成科技股份有限公司 | Full-screen high-efficiency laminated photovoltaic module |
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2020
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| JPH05291602A (en) * | 1992-04-15 | 1993-11-05 | Canon Inc | Solar battery module |
| CN103236465A (en) * | 2013-04-03 | 2013-08-07 | 苏州达方电子有限公司 | Electrode structure on element and manufacturing method for electrode structure |
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| CN109301004A (en) * | 2018-09-30 | 2019-02-01 | 东方日升新能源股份有限公司 | A kind of imbrication photovoltaic module and manufacturing method |
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| CN210575984U (en) * | 2019-10-31 | 2020-05-19 | 协鑫集成科技股份有限公司 | Full-screen high-efficiency laminated photovoltaic module |
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