CN111697096A - Solar cell module - Google Patents
Solar cell module Download PDFInfo
- Publication number
- CN111697096A CN111697096A CN202010680325.4A CN202010680325A CN111697096A CN 111697096 A CN111697096 A CN 111697096A CN 202010680325 A CN202010680325 A CN 202010680325A CN 111697096 A CN111697096 A CN 111697096A
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- Prior art keywords
- battery
- string
- cell
- solar
- solar cell
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- 239000011521 glass Substances 0.000 claims description 6
- 239000002313 adhesive film Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—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
- H01L31/044—PV modules or arrays of single PV cells including bypass diodes
-
- 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
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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
Abstract
The invention discloses a solar cell module which comprises at least one cell string group, wherein any cell string group comprises a first cell string, a second cell string and a third cell string which are connected in parallel; the first battery string, the second battery string and the third battery string are formed by connecting a plurality of battery pieces in series, the battery pieces are formed by dividing a primary battery piece into five equal parts, and the size of the primary battery piece is not less than 210mm multiplied by 210 mm. Because the battery piece formed by five equal divisions of the original battery piece has smaller size, the assembly formed by one fifth of the battery piece formed by five equal divisions has stronger hidden crack resistance, thereby effectively improving the load capacity of the assembly.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a solar cell module.
Background
With the development of high-efficiency batteries, the size of the batteries is gradually increased, and 158.75, 161.75, 166, 210mm and other large-size batteries are gradually developed from 156mm at present. As the size of the battery Is increased, the IS short-circuit current of the battery piece and the assembly Is continuously increased, and the single-piece current of the 210-specification battery reaches more than 18A, which Is far beyond the current conventional assembly. In order to reduce Rs (series resistance), the cells are currently cut in half to produce half-chip modules.
However, as the size of the battery is gradually increased, the anti-subfissure capacity of the component is obviously reduced, and the load capacity of the component is obviously reduced. Therefore, how to provide a solar cell module with stronger subfissure resistance is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a solar cell module which has stronger anti-subfissure capability.
In order to solve the above technical problem, the present invention provides a solar cell module, including at least one cell string set, where any cell string set includes a first cell string, a second cell string, and a third cell string that are connected in parallel;
the first battery string, the second battery string and the third battery string are formed by connecting a plurality of battery pieces in series, the battery pieces are formed by dividing primary battery pieces into five equal parts, and the size of the primary battery pieces is not less than 210mm multiplied by 210 mm.
Optionally, the size of the battery piece is not less than 210mm × 42 mm.
Optionally, the output current of the battery cell is not less than 18A.
Optionally, the battery pack system comprises a plurality of battery string sets, and the plurality of battery string sets are connected in series with each other.
Optionally, the length of any first cell string is the same as the width of the solar cell module, the length of any second cell string is the same as the width of the solar cell module, and the length of any third cell string is the same as the width of the solar cell module; the plurality of battery string groups are arranged along the long-edge extension line direction of the solar battery component.
Optionally, a bypass diode is arranged along a side edge portion of the long edge of the solar cell module, and a bypass diode is connected between any two of the cell string groups.
Optionally, the battery piece is a double-sided battery piece; the back plate of the solar cell module is a glass back plate.
Optionally, the battery piece and the glass back plate are attached to each other through an EVA adhesive film.
The invention provides a solar cell module which comprises at least one cell string group, wherein any cell string group comprises a first cell string, a second cell string and a third cell string which are connected in parallel; the first battery string, the second battery string and the third battery string are formed by connecting a plurality of battery pieces in series, the battery pieces are formed by dividing a primary battery piece into five equal parts, and the size of the primary battery piece is not less than 210mm multiplied by 210 mm.
Because the battery piece formed by five equal divisions of the original battery piece has smaller size, the assembly formed by one fifth of the battery piece formed by five equal divisions has stronger hidden crack resistance, thereby effectively improving the load capacity of the assembly. At the moment, the current of a single battery piece is one fifth of the current of a primary battery piece, and the current output by the assembly can be adjusted to be almost the same as the conventional output current at the present stage by connecting the three groups of batteries in series and in parallel, so that the solar battery assembly provided by the invention can be adapted to the present assembly without adjusting other components of the assembly.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a solar cell module according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of FIG. 1;
fig. 3 is a schematic circuit diagram of a specific solar cell module according to an embodiment of the present invention.
In the figure: 1. the battery pack comprises a battery piece, 2, a first battery string, 3, a second battery string, 4, a third battery string, 5, a battery string group, 6, a bypass diode and 7, a connecting wire.
Detailed Description
The core of the invention is to provide a solar cell module. In the prior art, the size of the battery is gradually increased, so that the hidden crack resistance of the component is obviously reduced, and the load capacity of the component is obviously reduced.
The solar cell module provided by the invention comprises at least one cell string group, wherein any cell string group comprises a first cell string, a second cell string and a third cell string which are connected in parallel; the first battery string, the second battery string and the third battery string are formed by connecting a plurality of battery pieces in series, the battery pieces are formed by dividing a primary battery piece into five equal parts, and the size of the primary battery piece is not less than 210mm multiplied by 210 mm.
Because the battery piece formed by five equal divisions of the original battery piece has smaller size, the assembly formed by one fifth of the battery piece formed by five equal divisions has stronger hidden crack resistance, thereby effectively improving the load capacity of the assembly. At the moment, the current of a single battery piece is one fifth of the current of a primary battery piece, and the current output by the assembly can be adjusted to be almost the same as the conventional output current at the present stage by connecting the three groups of batteries in series and in parallel, so that the solar battery assembly provided by the invention can be adapted to the present assembly without adjusting other components of the assembly.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a solar cell module according to an embodiment of the present invention; fig. 2 is a circuit diagram of fig. 1.
Referring to fig. 1 and 2, in the embodiment of the present invention, the solar cell module includes at least one cell string set 5, and any one of the cell string sets 5 includes a first cell string 2, a second cell string 3, and a third cell string 4 connected in parallel; the first battery string 2, the second battery string 3 and the third battery string 4 are formed by connecting a plurality of battery pieces 1 in series, the battery pieces 1 are battery pieces 1 formed by dividing a primary battery piece into five equal parts, and the size of the primary battery piece is not less than 210mm multiplied by 210 mm.
The battery piece 1 is formed by dividing a primary battery piece into five equal parts, in this case, compared with the primary battery piece, the area of the battery piece 1 in the embodiment of the present invention is one fifth of that of the primary battery piece, and the current of the battery piece 1 is also one fifth of that of the primary battery piece. Specifically, in the embodiment of the present invention, the size of the battery cell is usually not less than 210mm, i.e. the length of the battery cell is usually not less than 210mm, and the width of the battery cell is not less than 210 mm. At this time, the current of the primary battery piece is usually not less than 18A. Accordingly, in the embodiment of the present invention, the current output by the single battery piece 1 is usually about 3.6A.
Specifically, in the embodiment of the present invention, the size of a single battery piece 1 is generally not less than 210mm × 42mm, and in this case, in the embodiment of the present invention, the battery piece 1 is formed by dividing the battery piece into five equal parts along one side of the battery piece, and in this case, the battery pieces 1 are generally the same in shape and still have a generally rectangular shape. Of course, in the embodiment of the present invention, the battery sheet 1 provided in the embodiment of the present invention may also be formed by dividing the battery sheet into five equal parts in other ways, which is not limited in the embodiment of the present invention.
The battery pieces 1 are connected in series into three battery strings, namely, a first battery string 2, a second battery string 3 and a third battery string 4. The battery pieces 1 constituting the three types of battery strings have generally the same structure, and the three types of battery strings also have generally the same structure, except that the battery string group 5 in the present application is formed by connecting three battery strings in parallel with each other. Specifically, in the embodiment of the present invention, the first battery string 2 and the second battery string 3 correspond to each other one by one, and the third battery string 4 corresponds to each other one by one, and the first battery string 2, the second battery string 3, and the third battery string 4 are connected in parallel to form the battery string set 5. At this time, the current commonly output by the first battery string 2, the second battery string 3 and the third battery string 4 which are connected in parallel with each other is usually about 10.8A in the embodiment of the present invention, and is substantially the same as the current output by the conventional battery strings 10A to 12A in the prior art, so as to be adapted to the rest of the components of the half chip assembly in the prior art.
Specifically, in the embodiment of the present invention, any one of the first battery strings 2, the corresponding second battery string 3, and the corresponding third battery string 4 are connected in parallel to form a battery string set 5, and the solar battery module includes a plurality of battery string sets 5; a plurality of the battery string groups 5 are connected in series with each other. The battery string groups 5 formed by the first battery string 2, the second battery string 3 and the third battery string 4 are connected in series, so that the current output by the whole assembly is the same as the current output by a single battery string group 5, namely about 10.8A, which is substantially the same as the current output by the conventional battery string group 10A-12A in the prior art, and therefore the solar battery assembly provided by the embodiment of the invention is suitable for other accessories in the prior art.
Specifically, in the embodiment of the present invention, the length of any one of the first cell strings 2 is the same as the width of the solar cell module, the length of any one of the second cell strings 3 is the same as the width of the solar cell module, and the length of any one of the third cell strings 4 is the same as the width of the solar cell module; the plurality of cell string groups 5 are arranged along the long-side extension line direction of the solar cell module.
The length of the first cell string 2, the length of the second cell string 3, and the length of the third cell string 4 are all the same as the width of the solar cell module, that is, in the embodiment of the present invention, the first cell string 2, the second cell string 3, and the third cell string 4 need to be arranged in parallel along the extension line direction of the edge of the solar cell module, and different cell string groups 5 need to be arranged along the extension line direction of the long edge of the solar cell module. In this case, conductors, such as bus bars, necessary for electrical connection between different cell strings are provided on the side edge portions along the long sides of the solar cell module.
Specifically, in the embodiment of the present invention, a bypass diode 6 is disposed along a side edge portion of a long side of the solar cell module, and the bypass diode 6 is connected between any two of the cell string groups 5. Namely, the side edge portion along the long side of the solar cell module is further provided with a bypass diode 6 to short-circuit the damaged cell string when the current flows backward.
Specifically, in the embodiment of the present invention, the number of the battery string groups 5 is three in a normal case; the battery string group 5 comprises a left battery string group 5 positioned in a left region, a middle battery string group 5 positioned in a middle region, and a right battery string group 5 positioned in a right region; the left battery string group 5 is directly connected in series with the middle battery string group 5, and the middle battery string group 5 is directly connected in series with the right battery string group 5.
At this time, when the adjacent cell string groups 5 are connected in series with each other through the connection points, the connection points are alternately distributed up and down on the side portions along the long sides of the solar cell module in the solar cell module. Specifically, a connection point for connecting the left battery string 5 and the middle battery string 5 is generally provided at the lower side portion, and a connection point for connecting the middle battery string 5 and the right battery string 5 is generally provided at the upper side portion. In this case, the bypass diode 6 located at the lower side portion may be provided between the connection point and the right cell string group 5, and the bypass diode 6 located at the upper left side portion may be provided between the connection point and the left cell string group 5. Namely, a bypass diode 6 is connected between a connection point between the left battery string set 5 and the middle battery string set 5 and the right battery string set 5; and a bypass diode 6 is connected between a connection point between the middle battery string group 5 and the right battery string group 5 and between the left battery string group 5.
The solar cell module provided by the embodiment of the invention comprises at least one cell string group 5, wherein any cell string group 5 comprises a first cell string 2, a second cell string 3 and a third cell string 4 which are connected in parallel; the first battery string 2, the second battery string 3 and the third battery string 4 are all formed by connecting a plurality of battery pieces 1 in series, the battery pieces 1 are battery pieces 1 formed by dividing a primary battery piece into five equal parts, and the size of the primary battery piece is not less than 210mm multiplied by 210 mm.
Because the battery piece 1 formed by five equal divisions of the original battery piece has a smaller size, the assembly formed by one fifth of the five equal divisions has stronger hidden crack resistance, and the load capacity of the assembly is effectively improved. At the moment, the current of the single battery piece 1 is one fifth of the current of the original battery piece, and the current output by the assembly can be adjusted to be almost the same as the conventional output current at the present stage by connecting the three groups of batteries in series and in parallel, so that the solar battery assembly provided by the invention can be adapted to the existing assembly without adjusting other components of the assembly.
The details of the solar cell module provided by the present invention will be described in the following embodiments of the invention.
Referring to fig. 3, fig. 3 is a schematic circuit structure diagram of a specific solar cell module according to an embodiment of the present invention.
In contrast to the above-described embodiment of the invention, the embodiment of the invention is further limited to the structure of the solar cell module based on the above-described embodiment of the invention. The rest of the contents are already described in detail in the above embodiments of the present invention, and are not described herein again.
Referring to fig. 3, in the embodiment of the present invention, the bypass diode 6 is located at the same side portion.
That is, in the embodiment of the present invention, the bypass diode 6 located at one side edge of the module, and any bypass diode 6 leads the bypass diode 6 at the side edge to the other side edge through two connection lines 7, so that the bypass diode 6 is concentrated at one side edge of the solar cell module, and the bypass diode 6 is conveniently disposed.
It should be noted that the connection line 7 corresponding to the bypass diode 6 needs to be isolated and insulated from the battery cell 1 during the installation process, so as to ensure that the connection line 7 is only used for adjusting the position of the bypass diode 6. The connecting wire 7 can be arranged from the back of the battery piece 1, and is isolated and insulated from the battery piece 1 by an insulating film; the connecting wires 7 can also be arranged along the gaps between the battery pieces 1 to avoid contact with the battery pieces 1 so as to perform isolation and insulation. The specific manner of isolation and insulation between the connecting wires 7 and the battery cells 1 can be set according to the actual situation, and is not limited in detail.
Specifically, in the embodiment of the present invention, the battery sheet 1 may be a double-sided battery sheet 1, that is, both sides of the battery sheet 1 may absorb external light to generate electric energy. Correspondingly, the back plate of the solar cell module can be a glass back plate, so that the back surface of the solar cell module can also absorb the external light energy. Specifically, in the embodiment of the present invention, the battery sheet 1 and the glass back plate may be attached to each other through an EVA (polyethylene-polyvinyl acetate copolymer) adhesive film. Certainly, other packaging adhesive films may be selected to bond the battery sheet 1 and the back plate, which is not specifically limited in the embodiment of the present invention.
According to the solar cell module provided by the embodiment of the invention, the bypass diode 6 is arranged at the same side edge part of the solar cell module by arranging the connecting wire 7, so that the bypass diode 6 can be conveniently arranged.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The solar cell module provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A solar cell module is characterized by comprising at least one cell string group, wherein any cell string group comprises a first cell string, a second cell string and a third cell string which are connected in parallel;
the first battery string, the second battery string and the third battery string are formed by connecting a plurality of battery pieces in series, the battery pieces are formed by dividing primary battery pieces into five equal parts, and the size of the primary battery pieces is not less than 210mm multiplied by 210 mm.
2. The solar cell module as claimed in claim 1, wherein the cell sheet has a size of not less than 210mm x 42 mm.
3. The solar cell module as claimed in claim 2, wherein the output current of the cell sheet is not less than 18A.
4. The solar cell module according to claim 1, comprising a plurality of the cell string groups, the plurality of cell string groups being connected in series with each other.
5. The solar module according to claim 4, wherein the length of any of the first cell strings is the same as the width of the solar module, the length of any of the second cell strings is the same as the width of the solar module, and the length of any of the third cell strings is the same as the width of the solar module; the plurality of battery string groups are arranged along the long-edge extension line direction of the solar battery component.
6. The solar cell module according to claim 5, wherein a bypass diode is disposed along a side edge portion of a long side of the solar cell module, and a bypass diode is connected between any two of the cell string groups.
7. The solar cell module as claimed in claim 1, wherein the cell sheet is a bifacial cell sheet; the back plate of the solar cell module is a glass back plate.
8. The solar cell module as claimed in claim 7, wherein the cell sheet and the glass back sheet are bonded to each other through an EVA adhesive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680325.4A CN111697096A (en) | 2020-07-15 | 2020-07-15 | Solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680325.4A CN111697096A (en) | 2020-07-15 | 2020-07-15 | Solar cell module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111697096A true CN111697096A (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010680325.4A Pending CN111697096A (en) | 2020-07-15 | 2020-07-15 | Solar cell module |
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| CN (1) | CN111697096A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868841A (en) * | 2015-05-22 | 2015-08-26 | 协鑫集成科技股份有限公司 | Solar cell module |
| CN105097975A (en) * | 2015-09-06 | 2015-11-25 | 江苏东昇光伏科技有限公司 | Solar battery assembly |
| CN110571293A (en) * | 2019-09-30 | 2019-12-13 | 天合光能股份有限公司 | Photovoltaic module suitable for jumbo size solar cell |
| CN210926043U (en) * | 2019-12-31 | 2020-07-03 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
-
2020
- 2020-07-15 CN CN202010680325.4A patent/CN111697096A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868841A (en) * | 2015-05-22 | 2015-08-26 | 协鑫集成科技股份有限公司 | Solar cell module |
| CN105097975A (en) * | 2015-09-06 | 2015-11-25 | 江苏东昇光伏科技有限公司 | Solar battery assembly |
| CN110571293A (en) * | 2019-09-30 | 2019-12-13 | 天合光能股份有限公司 | Photovoltaic module suitable for jumbo size solar cell |
| CN210926043U (en) * | 2019-12-31 | 2020-07-03 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
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Application publication date: 20200922 |
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