CN212848444U - Light solar cell module - Google Patents
Light solar cell module Download PDFInfo
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- CN212848444U CN212848444U CN202022245603.1U CN202022245603U CN212848444U CN 212848444 U CN212848444 U CN 212848444U CN 202022245603 U CN202022245603 U CN 202022245603U CN 212848444 U CN212848444 U CN 212848444U
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- double
- sided
- conductive coating
- transparent
- solar cell
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- 238000000576 coating method Methods 0.000 claims abstract description 78
- 239000011248 coating agent Substances 0.000 claims abstract description 73
- 239000002861 polymer material Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000010408 film Substances 0.000 claims description 17
- 239000010409 thin film Substances 0.000 claims description 11
- 239000002070 nanowire Substances 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000002042 Silver nanowire Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001887 tin oxide Inorganic materials 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229920006285 olefinic elastomer Polymers 0.000 claims 1
- 229910000679 solder Inorganic materials 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
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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
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- Photovoltaic Devices (AREA)
Abstract
The application provides a light solar cell module which comprises a transparent cover plate, a double-sided cell string layer and a transparent back plate from top to bottom in sequence; the double-sided battery string layer comprises a plurality of double-sided battery pieces which are arranged at intervals and have upward positive electrodes and upward negative electrodes, and a first conductive coating is coated on the transparent cover plate; a second conductive coating is coated on the transparent back plate; the first conductive coating and the second conductive coating are distributed on two sides of the double-sided battery string in a staggered mode and are used for connecting positive electrodes and negative electrodes of two adjacent double-sided battery pieces; the transparent cover plate and the transparent back plate are both of light high polymer material thin plate structures. This application is through adopting light macromolecular material's transparent cover plate and transparent backplate to effectively reduced solar module's weight, when this solar module applied to the product, also be favorable to the lightweight of product. In addition, this application has cancelled the application of solder strip, has avoided the problem of the stress increase between solder strip and the battery piece.
Description
Technical Field
The application relates to the technical field of photovoltaic power generation, in particular to a light solar cell module.
Background
Solar cells are widely used in various fields as green energy. The existing solar cell module is generally a single-glass or double-glass module, namely, one cover plate or two cover plates of the solar cell are made of glass. However, the solar cell module using the cover plate made of glass has a large overall weight, and when the solar cell module is applied to a product, it is difficult to reduce the weight of the product.
In addition, as shown in fig. 1 and fig. 2, the conventional solar cell adopts the solder strip 200 to realize series connection between the cell pieces 100, and the polarities of the cell pieces 100 in the same direction are the same, when the solder strip 200 connects the positive and negative electrodes of two adjacent cell pieces 100, the region between the two cell pieces 100 is bent, so that the stress between the solder strip 200 and the cell pieces 100 is increased, and the solar cell module is prone to crack and the fragment rate is increased in the lamination process.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide a light solar module to solve the above-mentioned problem among the prior art, realize solar module's lightweight, avoid solar module hidden fracture and breakage in the lamination process simultaneously.
The application provides a light solar cell module, which sequentially comprises a transparent cover plate, a double-sided cell string layer and a transparent back plate from top to bottom;
the double-sided battery string layer comprises a plurality of double-sided battery pieces which are arranged at intervals and have upward positive electrodes and upward negative electrodes;
the transparent cover plate is coated with a first conductive coating;
a second conductive coating is coated on the transparent back plate;
the first conductive coating and the second conductive coating are distributed on two sides of the double-sided battery string in a staggered mode and are used for connecting positive electrodes and negative electrodes of two adjacent double-sided battery pieces;
the transparent cover plate and the transparent back plate are both of light high polymer material thin plate structures.
In one possible implementation, the transparent cover plate is coated with a first bus coating, and the transparent back plate is coated with a second bus coating;
the first bus coating is connected with one end of the first conductive coating;
the second bus coating is connected to one end of the second conductive coating.
In one possible implementation, the transparent cover plate and the transparent back plate are one of a thermoplastic elastomer, a polyvinyl fluoride composite structure, and an olefin elastomer.
In one possible implementation, the first conductive coating and the second conductive coating are one of a transparent conductive film, a metal nanowire, graphene, or a metal thin film.
In one possible implementation manner, the first conductive coating and the second conductive coating are both the transparent conductive film, and the transparent conductive film is a thin film formed by indium tin oxide, aluminum-doped zinc oxide or fluorine-doped tin oxide.
In a possible implementation manner, the first conductive coating and the second conductive coating are both the metal thin film, and the thickness of the metal thin film is less than 10 mm.
In one possible implementation, the metal nanowires are silver nanowires.
In a possible implementation manner, the double-sided battery pieces are all P-type double-sided battery pieces or N-type double-sided battery pieces.
In a possible implementation manner, the plurality of double-sided battery pieces comprise P-type double-sided battery pieces and N-type double-sided battery pieces, and the P-type double-sided battery pieces and the N-type double-sided battery pieces are arranged at intervals.
In a possible implementation manner, the distance between two adjacent double-sided battery pieces is greater than 0.1 mm.
The technical scheme provided by the application can achieve the following beneficial effects:
the application provides a light solar module has replaced the mode that adopts to weld the area and establish ties the battery piece among the prior art, has solved and has welded the area and cause after buckling between two battery pieces to weld the stress increase between area and the battery piece, and then causes solar module and hidden problem of splitting and fragment rate promotion in the lamination process. Meanwhile, due to the fact that the application of a welding strip is omitted, the distance between every two adjacent battery pieces can be reduced, the arrangement of the battery pieces is compact, the overall size of the solar battery assembly is reduced, and the problems that the battery pieces are hidden and cracked are solved. In addition, the transparent cover plate and the transparent back plate which are made of light high polymer materials are adopted, so that the weight of the solar cell module is effectively reduced, and when the solar cell module is applied to a product, the light weight of the product is facilitated.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
FIG. 1 is a front view of a prior art battery string;
FIG. 2 is a top view of a prior art battery string;
fig. 3 is a top view of a lightweight solar cell module provided in an embodiment of the present application;
FIG. 4 is a top view of a transparent cover plate;
FIG. 5 is a top view of a transparent backplane;
fig. 6 is a diagram illustrating a double-sided battery sheet arrangement according to an embodiment of the present disclosure.
Reference numerals:
100-a battery piece;
200-welding a strip;
1-double-sided battery piece;
11-a positive electrode;
12-a negative electrode;
2-a transparent cover plate;
21-a first conductive coating;
22-first bus coat;
3-a transparent back sheet;
31-a second conductive coating;
32-second bus coating.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
As shown in fig. 3 to 6, the present application provides a lightweight solar cell module, which includes, from top to bottom, a transparent cover plate 2, a double-sided cell string layer, and a transparent back plate 3; the double-sided battery string layer comprises a plurality of double-sided battery pieces 1 with positive electrodes 11 upwards and negative electrodes 12 upwards which are arranged at intervals, namely, the polarities of two adjacent battery pieces in the same direction are opposite, as shown in fig. 6.
The transparent cover plate 2 is coated with a first conductive coating 21; a second conductive coating 31 is coated on the transparent back plate 3; the first conductive coatings 21 and the second conductive coatings 31 are distributed on two sides of the double-sided battery string in a staggered manner and are used for connecting the positive electrodes 11 and the negative electrodes 12 of two adjacent double-sided battery pieces 1, as shown in fig. 3. Because the polarities of the two adjacent battery pieces in the same direction are opposite, the conductive coatings for connecting the two adjacent battery pieces in series can be positioned on the same side of the two adjacent battery pieces.
From this, the light solar module that this application provided has replaced the mode that adopts to weld the area series battery piece among the prior art, has solved and has welded the area and cause the stress increase between area and the battery piece after buckling between two battery pieces, and then causes solar module to hide the problem that splits and the fragment rate promotes at the lamination in-process.
It should be noted that, when the cell pieces are connected by the solder strip, the solder strip needs to be bent between the two cell pieces, a certain distance needs to be kept between the two cell pieces, the distance is usually greater than 1.8mm, and if the distance is smaller than 1.8mm, serious problems such as subfissure and the like occur in the preparation process of the solar cell module. In the application, the application of the welding strip is cancelled, so that the distance between every two adjacent battery pieces can be reduced, the arrangement of the battery pieces is more compact, the overall volume of the solar battery assembly is reduced, and the problems of hidden cracking of the battery pieces and the like are avoided. In this embodiment, the distance between two adjacent double-sided battery pieces 1 may be any value greater than 0.1 mm.
In the light solar cell module provided in the embodiment of the present application, the transparent cover plate 2 and the transparent back plate 3 are both thin plate structures made of light polymer materials. Compared with a solar cell module adopting a double-sided glass cover plate or a single-sided glass cover plate in the prior art, the solar cell module adopts the transparent cover plate 2 and the transparent back plate 3 which are made of light high polymer materials, so that the weight of the solar cell module is effectively reduced, and when the solar cell module is applied to a product, the light weight of the product is facilitated.
It should be noted that the first conductive coating 21 and the second conductive coating 31 in this embodiment are coatings formed on the transparent cover plate 2 and the transparent back plate 3, respectively, and are not separate film layers from the transparent cover plate 2 or the transparent back plate 3. During manufacturing, the first conductive coating 21 is coated on the transparent cover plate 2 in a specific manner according to the coating material, and the second conductive coating 31 is coated on the transparent back plate 3 in a specific manner according to the coating material; then, laying the double-sided battery string layer on the transparent back plate 3, and connecting the positive electrode 11 and the negative electrode 12 on the back of the double-sided battery string layer with the second conductive coating 31; and then the transparent cover plate 2 is laid above the double-sided battery string layer, so that the first conductive coating 21 is connected with the positive electrode 11 and the negative electrode 12 on the front side of the double-sided battery string layer, thereby forming a solar battery assembly, and further entering a subsequent lamination process for lamination and solidification.
As a specific implementation, as shown in fig. 4 and 5, the transparent cover plate 2 is coated with the first bus bar coating 22, and the transparent back plate 3 is coated with the second bus bar coating 32; the first bus bar coating 22 is connected to one end of the first conductive coating 21; the second bus bar coating 32 is connected to one end of the second conductive coating 31.
After the transparent cover plate 2, the double-sided battery string layer and the transparent back plate 3 are assembled, the first bus coating 22 and the second bus coating 32 are located outside the double-sided battery string layer, the first bus coating 22 can lead out one pole of the double-sided battery string layer, and the second bus coating 32 can lead out the opposite pole of the double-sided battery string layer, so that the light solar battery assembly is connected with the junction box through the first bus coating 22 and the second bus coating 32.
The first bus coating 22 and the second bus coating 32 are coatings formed on the transparent cover plate 2 and the transparent back plate 3, respectively, rather than separate film layers, and replace the bus bars that need to be separately welded with solder strips in the prior art. Therefore, in the preparation process of the light solar cell module provided by the embodiment of the application, the welding process of the existing bus bar can be eliminated, and the preparation process is simplified.
As a specific implementation manner, the transparent cover plate 2 and the transparent back plate 3 may be one of thermoplastic elastomer (TPE), polyvinyl fluoride composite structure (TPT), or olefin elastomer (TPO). In this embodiment, it is preferable that the transparent cover plate 2 and the transparent back plate 3 are both of a polyvinyl fluoride composite structure (TPT).
As a specific implementation manner, the first conductive coating 21 and the second conductive coating 31 may be one of a transparent conductive film (TCO), a metal nanowire, graphene, or a metal thin film formed on the transparent cover plate 2 and the transparent back plate 3, respectively.
In one embodiment, when the first conductive coating 21 and the second conductive coating 31 are transparent conductive films (TCOs) formed on the transparent cover plate 2 and the transparent back plate 3, respectively, the transparent conductive films (TCOs) may be thin films formed of indium tin oxide, aluminum-doped zinc oxide, or fluorine-doped tin oxide. Preferably, the transparent conductive film (TCO) is a thin film formed of indium tin oxide.
Wherein, a magnetron sputtering method can be adopted to prepare a film such as indium tin oxide, and the indium tin oxide can be sputter coated on the required conductive areas on the transparent cover plate 2 and the transparent back plate 3, and form the first conductive coating 21 and the second conductive coating 31 after drying.
In another embodiment, the first conductive coating 21 and the second conductive coating 31 are both metal films, and the thickness of the metal films is less than 10 mm.
The light solar cell module can be made to have certain flexibility while ensuring conductivity by magnetron sputtering or electron beam evaporation of a metal film layer on the conductive area of the transparent cover plate 2 or the transparent back plate 3 and controlling the thickness of the metal film layer to be less than 10 mm.
In yet another embodiment, the first conductive coating 21 and the second conductive coating 31 are metal nanowires formed on the transparent cover plate 2 and the transparent back plate 3, respectively, wherein the metal nanowires may be formed by nickel, platinum, aluminum, and the like, and in this embodiment, the metal nanowires are preferably silver nanowires. The silver nanowires have excellent conductivity of silver, and also have excellent light transmittance and flexibility resistance due to a nano-scale size effect.
As a specific implementation manner, the plurality of double-sided battery pieces 1 may be P-type double-sided battery pieces or N-type double-sided battery pieces. Wherein, the positive electrodes 11 and the negative electrodes 12 of the P-type double-sided cell pieces or the N-type double-sided cell pieces in the same direction are alternately arranged, as shown in fig. 6.
As a specific implementation manner, the plurality of double-sided battery pieces 1 may include both P-type double-sided battery pieces and N-type double-sided battery pieces, and the P-type double-sided battery pieces and the N-type double-sided battery pieces are arranged at intervals. The positive electrode is arranged on the front side of the P-type double-sided battery piece, and the negative electrode is arranged on the front side of the N-type double-sided battery piece; when the battery cells are arranged, the P-type double-sided battery cells and the N-type double-sided battery cells can be alternately arranged, and the front sides of the P-type double-sided battery cells and the front sides of the N-type double-sided battery cells face the same direction.
It should be noted that the cells in the light solar cell module provided by this embodiment are all double-sided cells 1, and both sides of the double-sided cells 1 can receive illumination through the transparent cover plate 2 or the transparent back plate 3, and convert the illumination into electric energy, so as to improve the power generation efficiency.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A light solar cell module is characterized by comprising a transparent cover plate (2), a double-sided cell string layer and a transparent back plate (3) from top to bottom in sequence;
the double-sided battery string layer comprises a plurality of double-sided battery pieces (1) with upward positive electrodes (11) and upward negative electrodes (12) which are arranged at intervals;
a first conductive coating (21) is coated on the transparent cover plate (2);
a second conductive coating (31) is coated on the transparent back plate (3);
the first conductive coating (21) and the second conductive coating (31) are distributed on two sides of the double-sided battery string in a staggered mode and are used for connecting a positive electrode (11) and a negative electrode (12) of two adjacent double-sided battery pieces (1);
the transparent cover plate (2) and the transparent back plate (3) are both of thin plate structures made of light high polymer materials.
2. The lightweight solar cell module as claimed in claim 1, characterized in that the transparent cover plate (2) is coated with a first bus coating (22) and the transparent back plate (3) is coated with a second bus coating (32);
the first bus bar coating (22) is connected to one end of the first conductive coating (21);
the second bus bar coating (32) is connected to one end of the second conductive coating (31).
3. The lightweight solar cell module according to claim 1, wherein the transparent cover sheet (2) and the transparent backsheet (3) are one of a thermoplastic elastomer, a polyvinyl fluoride composite structure, an olefinic elastomer.
4. The lightweight solar cell module according to claim 1, wherein the first conductive coating (21) and the second conductive coating (31) are one of a transparent conductive film, a metal nanowire, graphene or a metal thin film.
5. The lightweight solar cell module as claimed in claim 4, wherein the first conductive coating (21) and the second conductive coating (31) are both the transparent conductive film, and the transparent conductive film is a thin film formed of indium tin oxide, aluminum-doped zinc oxide or fluorine-doped tin oxide.
6. The lightweight solar cell module as claimed in claim 4, wherein the first conductive coating (21) and the second conductive coating (31) are both the metal thin film, the thickness of the metal thin film being less than 10 mm.
7. The lightweight solar cell module as claimed in claim 4, wherein said metal nanowires are silver nanowires.
8. The lightweight solar cell module according to claim 1, wherein the plurality of double-sided cell pieces (1) are all P-type double-sided cell pieces or N-type double-sided cell pieces.
9. The lightweight solar cell module as claimed in claim 1, wherein the plurality of double-sided cell pieces (1) comprise P-type double-sided cell pieces and N-type double-sided cell pieces, and the P-type double-sided cell pieces and the N-type double-sided cell pieces are arranged at intervals.
10. The lightweight solar cell module according to claim 1, wherein the distance between two adjacent double-sided cell sheets (1) is greater than 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022245603.1U CN212848444U (en) | 2020-10-09 | 2020-10-09 | Light solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022245603.1U CN212848444U (en) | 2020-10-09 | 2020-10-09 | Light solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212848444U true CN212848444U (en) | 2021-03-30 |
Family
ID=75153632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022245603.1U Active CN212848444U (en) | 2020-10-09 | 2020-10-09 | Light solar cell module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212848444U (en) |
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2020
- 2020-10-09 CN CN202022245603.1U patent/CN212848444U/en active Active
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Address after: 314416 west of lumansi bridge, Yuanxi Road, Yuanhua Town, Haining City, Jiaxing City, Zhejiang Province Patentee after: ZHEJIANG JINKO SOLAR Co.,Ltd. Patentee after: Jinko Solar Co., Ltd. Address before: 314416 west of lumansi bridge, Yuanxi Road, Yuanhua Town, Haining City, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG JINKO SOLAR Co.,Ltd. Patentee before: JINKO SOLAR Co.,Ltd. |