CN107507881A - A kind of photovoltaic half component internal protection circuit attachment structure - Google Patents
A kind of photovoltaic half component internal protection circuit attachment structure Download PDFInfo
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- CN107507881A CN107507881A CN201710762148.2A CN201710762148A CN107507881A CN 107507881 A CN107507881 A CN 107507881A CN 201710762148 A CN201710762148 A CN 201710762148A CN 107507881 A CN107507881 A CN 107507881A
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- 230000002950 deficient Effects 0.000 abstract description 3
- 238000011112 process operation Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 9
- 238000003466 welding Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
-
- 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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- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of photovoltaic half component internal protection circuit attachment structure; including some solar cells; some solar cells are divided into six rows; it is followed successively by the first row, the second row, the third line, fourth line, fifth line and the 6th row; the first row is connected and is connected in upper terminal box with the left-hand seat end of the second row; the first row is connected with the assistant end of the second row and is connected to by diode one in upper terminal box, and the assistant end of the second row is connected with the assistant end of the third line；The third line is connected with the assistant end of fourth line and is connected to by diode two in lower terminal box, and the third line is connected with the left-hand seat end of fourth line and is connected to the left-hand seat end of fifth line.The present invention can effectively lift half component power output and generating efficiency, flow direction conflict will not occur, and lead-out wire quantity is much smaller than 8, is effectively reduced lead-out wire quantity, it can be very good to mitigate the influence to process operations beat, reduce risk caused by defective products.
Description
Technical field
The present invention relates to solar energy crystal silicon section cell module encapsulation applied technical field, specially a kind of photovoltaic half group
Part internal protection circuitry attachment structure.
Background technology
As the conventional fossil energy consumption speed such as worldwide coal, oil, natural gas is accelerated, ecological environment constantly deteriorates,
Particularly greenhouse gas emission causes increasingly serious Global climate change, and the sustainable development of human society has been subjected to seriously
Threaten, respective energy development strategy is formulated in countries in the world one after another, to tackle the finiteness of conventional fossil energy resources and exploitation
Using the environmental problem brought, solar energy is by its reliability, security, popularity, longlife noodles, the feature of environmental protection, resource adequate
The characteristics of turn into one of most important regenerative resource, be expected to turn into the mainstay of following global power supply.
Widely popularize and background using solar energy green energy resource under, photovoltaic module is former using low current low-loss electricity
Reason (photovoltaic module power is lost square proportional with operating current) and by slice process (to conventional 6 cun of sun electricity
Pond carry out half laser cutting, be divided into two independent complete generator units) carry out package assembling and improve power output with
Generating efficiency.At present one linear light of country volt module manufacturer such as day close, Aunar this, brilliant section, brilliant Australia released half photovoltaic group
High-volume carries out the sale of half component in market and forms objective profit on sales this grade manufacturer of part, wherein Aunar.Market
The internal protection circuitry design on the basis of existing processing procedure streamline feature is considered of upper existing conventional half photovoltaic module is mostly 2
Connection in series-parallel and then connect in 3 string series connection or 2 connection in series-parallel and then in 5 strings and bypass some diodes and formed and can conflux circuit (with 60
Exemplified by piece version type), final finished half photovoltaic module is suitable with conventional photovoltaic assemblies output voltage, electric current (to system end application
Considerable influence will not be produced, will not additionally increase system end application cost) and more conventional about 5 watts of the raising of power output gain, effect
Rate improves about 0.3% or so.
By taking 60 version types as an example, existing half photovoltaic module internal protection circuitry design generally has longitudinal direction to draw and laterally draw
Go out two ways, if exemplified by longitudinally drawing, " 2 connection in series-parallel and then 3 strings are being connected and are bypassing 2 diodes ", if laterally to draw
Exemplified by going out, " 2 connection in series-parallel and then 5 strings are being connected and bypassing 4 diodes ", conventional photovoltaic assemblies processing procedure streamline compatibility is considered
And the design of the factor above two such as final products performance and reliability internal protection circuitry is respectively provided with certain defect drawback.
Exemplified by extending laterally away, battery is protected using 4 bypass diodes, is blocked by shadow if having a string in 5 substrings
Bypass diode ON operation in parallel therewith during in reverse-bias state, only 3/5ths substrings of actually active generating
Working, having 2/5ths battery substrings and be bypassed and lose generated energy, the half battery actual availability that always generates electricity is about
60%, analyzed from product electricity power output angle, about 27% generated energy is had more with longitudinal lead-out mode compared to above-mentioned, generally
Conventional photovoltaic assemblies stacking laying processing procedure in semi-finished product module flow direction be long side enter completion effect after and long side outflow, this with
Flow direction conflict is extended laterally away, can not be fulfiled assignment on conventional processing procedure streamline, and due to 4 pairs of totally 8 lead-out wires, then can
Process operations beat is had a strong impact on, while adds risk caused by defective products.
The content of the invention
It is an object of the invention to provide a kind of photovoltaic half component internal protection circuit attachment structure, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of photovoltaic half component internal protection circuit attachment structure, including some solar cells, some solar cells etc.
It is divided into six rows, is followed successively by the first row, the second row, the third line, fourth line, fifth line and the 6th row, often row solar cell is being just
Negative pole carries out series connection and forms battery substring successively；
The first row to the battery substring left-hand seat polarity of the 6th row is followed successively by positive pole, positive pole, negative pole, negative pole, positive pole and positive pole,
And the first row to battery substring assistant's polarity of the 6th row is followed successively by negative pole, negative pole, positive pole, positive pole, negative pole and negative pole；
The first row is connected and is connected in upper terminal box with the left-hand seat end of the second row, the first row and the assistant end phase of the second row
Even and it is connected to by diode one in upper terminal box, and the assistant end of the second row is connected with the assistant end of the third line；
The third line is connected with the assistant end of fourth line and is connected to by diode two in lower terminal box, the third line and the 4th
Capable left-hand seat end is connected and is connected to the left-hand seat end of fifth line；
The left-hand seat end of fifth line and the 6th row is connected and is connected to by diode three in lower terminal box, fifth line and the 6th
Capable assistant end is connected and is connected in lower terminal box.
Preferably, the diode one is arranged in terminal box.
Preferably, the diode two and diode three may be contained within lower terminal box.
Compared with prior art, the beneficial effects of the invention are as follows：
The invention reside in designing internal protection circuitry structure using mode is extended laterally away, and bypass and there are three diodes
To be effectively protected half battery, half electricity can be improved when being blocked by shadow or other factors cause battery strings reverse bias
Pond practical efficiency, and half subassembly product power generation performance and reliability are may insure, it may finally effectively lift half group
Part power output and generating efficiency, and system end measure electricity cost is reduced, while the half component in a manner of extending laterally away is compatible
Conventional photovoltaic assemblies processing procedure streamline job stream to, will not occur flow direction conflict, and lead-out wire quantity be much smaller than 8, effectively
Reduce lead-out wire quantity, can be very good to mitigate the influence to process operations beat, reduce risk caused by defective products.
Brief description of the drawings
Fig. 1 is the internal protection circuitry structural representation of the present invention；
Fig. 2 is the both positive and negative polarity schematic diagram of solar cell in embodiment.
In figure：10 solar cells, 1 the first row, 2 second rows, 3 the third lines, 4 fourth lines, 5 fifth line, 6 the 6th rows, 7 two poles
Guan Yi, terminal box, 9 diodes two, 11 diodes three, 12 times terminal boxes on 8.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：
A kind of photovoltaic half component internal protection circuit attachment structure, including some solar cells 10, some solar cells
10 are divided into six rows, and whole circuit structure is designed by the way of extending laterally away, as shown in Figure of description 2, the sun
Long line end is positive pole in battery 10, and short-term end is negative pole, is followed successively by the first row 1, the second row 2, the third line 3, fourth line the 4, the 5th
The row 6 of row 5 and the 6th, often the both positive and negative polarity of row solar cell 10 carry out series connection successively and form battery substring, such as the institute of Figure of description 1
Show, middle clipped combines for several connection in series-parallel of solar cell 10.
To see from left to right, the left side per a line is the left-hand seat end of battery substring, and right side is the assistant end of battery substring,
The battery substring left-hand seat polarity of the row 6 of the first row 1 to the 6th is followed successively by positive pole, positive pole, negative pole, negative pole, positive pole and positive pole, and first
Battery substring assistant's polarity of the row 6 of row 1 to the 6th is followed successively by negative pole, negative pole, positive pole, positive pole, negative pole and negative pole.
The first row 1 is connected and is connected in upper terminal box 8 with the left-hand seat end of the second row 2, and upper terminal box 8 is as outwards output
The positive output end of electric current, the first row 1 are connected with the assistant end of the second row 2 and are connected to by diode 1 in upper terminal box 8,
And second the assistant end of row 2 be connected with the assistant end of the third line 3, realization is connected with the assistant end of the third line 3 by the second row 2
The connection effect of solar cell 10, the setting of diode 1 are used for protecting the solar cell 10 of the row 2 of the first row 1 and second
Shield.
The third line 3 is connected with the assistant end of fourth line 4 and is connected to by diode 29 in lower terminal box 12, the third line 3
It is connected with the left-hand seat end of fourth line 4 and is connected to the left-hand seat end of fifth line 5, passes through the left-hand seat end of the third line 3 and fourth line 4 and the
The connection effect of solar cell 10 is realized in the connection of the five-element 5, and the setting of diode 29 is used for the third line 3 and fourth line 4 too
Protected in positive electricity pond 10.
Fifth line 5 is connected with the left-hand seat end of the 6th row 6 and is connected to by diode 3 11 in lower terminal box 12, diode
3 11 setting is used for protecting the solar cell 10 of the row 6 of fifth line 5 and the 6th, the assistant end of the row 6 of fifth line 5 and the 6th
It is connected and is connected in lower terminal box 12, lower terminal box 12 is as the negative output terminal outwards connected, for being carried out with external device (ED)
Connection.
As one preferably, diode 1 is arranged in terminal box 8, can be by upper terminal box 8 to diode 1
Installed and protected.
As another preferably, diode 29 and diode 3 11 may be contained within lower terminal box 12, can be connect under
Line box 12 is installed and protected to diode 29 and diode 3 11.
A kind of specific design operating procedure of photovoltaic half component internal protection circuit attachment structure：
By taking 60 version types as an example, intact 6 cun of pieces are divided into two complete independent generatings after by by laser cutting
Junior unit, some generating junior units, according to the cell piece quantity of a substring interconnection, are automatically performed series welding in automatic string welding machine
Operation, internal circuit be laminated the interconnection of version type and confluxes and arrange in pairs or groups two designed according to this invention for the battery substring of semi-finished product interconnection
Individual terminal box, a diode is contained in one of terminal box, contains two diodes in another terminal box.
1st, 6 cun of intact solar cell pieces, carrying robot arm is passed down through according to conventional batteries face down, cell backside
Take out and be precisely placed on laser scribing means designated area position from special carrying magazine.
2nd, laser scribing means sets according to certain energy ratio and solar cell is cut by laser, by according to half
Size is cut, after the completion of cutting after laser scribing means road have it is automatic break piece function and by it is fully functional, structure is single
Cutting sheet is collected in the carrying magazine of string welding machine automatically.
3rd, cut solar cell requires feeding according to half automatic string welder and detected through apparent visual, to electricity
Pond main grid silver paste, which goes out, carries out scaling powder spraying, while photovoltaic welding belt is smoothed, stretched, cut and is laid on half battery.
4th, it is configured according to welding condition, such as " welding temperature, weld interval, the quantity of interconnected battery, substring
Reserved length of photovoltaic welding belt in both ends etc. " etc., complete automatic welding and detect and go here and there through automatic string outward appearance after EL is detected to close
The half size battery cell string of lattice passes to the mixer of next process.
5th, mixer according to the first row to the 6th row battery substring left-hand seat polarity " positive pole (+), positive pole (+), negative pole
(-), negative pole (-), positive pole (+), positive pole (+) " and set about " negative pole (-), negative pole (-), positive pole (+), positive pole (+), negative pole (-), negative
Pole (-) " battery strings polarity carries out Automatic Typesetting, and the string spacing of battery substring meets half photovoltaic module making technology drawing and wanted
Ask.
6th, lamination personnel conflux to carry out laying welding according to first 2 row battery substrings interconnection and then 3 big substring in parallel connection,
For 2 strings 3 simultaneously, based on extending laterally away, short side direction or so has 1 lead-out wire to draw to circuit design after the completion of stacking, convenient
Road connection terminal box afterwards.
7th, the semi-finished product half component that has been laminated by lamination, deburring, fill two respectively in component short side above-below direction and connect
Line box, there is 1 diode in one of terminal box, there is 2 diodes, solidification, cleaning, test and production in another terminal box
Product packaging etc., wherein test link needs to increase an opposite side binding post newly on the basis of general components test.
8th, in system end half component using mode is transversely mounted, it is transversely mounted mode in contrast to routine and adds actual hair
Electricity simultaneously accordingly saves 5% cable usage amount, can effectively reduce the initial input cost of photovoltaic plant.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. a kind of photovoltaic half component internal protection circuit attachment structure, including some solar cells (10), some solar cells
(10) six rows are divided into, are followed successively by the first row (1), the second row (2), the third line (3), fourth line (4), fifth line (5) and
Six rows (6), it is characterised in that：Often the both positive and negative polarity of row solar cell (10) carries out series connection and forms battery substring successively；
The first row (1) to the battery substring left-hand seat polarity of the 6th row (6) is followed successively by positive pole, positive pole, negative pole, negative pole, positive pole and just
Pole, and the first row (1) to battery substring assistant's polarity of the 6th row (6) is followed successively by negative pole, negative pole, positive pole, positive pole, negative pole and born
Pole；
The first row (1) is connected with the left-hand seat end of the second row (2) and is connected in upper terminal box (8), the first row (1) and the second row
(2) assistant end is connected and is connected to by diode one (7) in upper terminal box (8), and the assistant end and the 3rd of the second row (2)
The assistant end of row (3) is connected；
The third line (3) is connected with the assistant end of fourth line (4) and is connected to by diode two (9) in lower terminal box (12), the
Three rows (3) are connected with the left-hand seat end of fourth line (4) and are connected to the left-hand seat end of fifth line (5)；
Fifth line (5) is connected with the left-hand seat end of the 6th row (6) and is connected to by diode three (11) in lower terminal box (12), the
The five-element (5) are connected with the assistant end of the 6th row (6) and are connected in lower terminal box (12).
A kind of 2. photovoltaic half component internal protection circuit attachment structure according to claim 1, it is characterised in that：It is described
Diode one (7) is arranged in terminal box (8).
A kind of 3. photovoltaic half component internal protection circuit attachment structure according to claim 1, it is characterised in that：It is described
Diode two (9) and diode three (11) may be contained within lower terminal box (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762148.2A CN107507881A (en) | 2017-08-30 | 2017-08-30 | A kind of photovoltaic half component internal protection circuit attachment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710762148.2A CN107507881A (en) | 2017-08-30 | 2017-08-30 | A kind of photovoltaic half component internal protection circuit attachment structure |
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| Publication Number | Publication Date |
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| CN107507881A true CN107507881A (en) | 2017-12-22 |
Family
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| CN201710762148.2A Pending CN107507881A (en) | 2017-08-30 | 2017-08-30 | A kind of photovoltaic half component internal protection circuit attachment structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428767A (en) * | 2018-04-01 | 2018-08-21 | 格润智能光伏南通有限公司 | A kind of more main grid half stacked wafer moudle row string methods |
| CN108461567A (en) * | 2018-04-01 | 2018-08-28 | 格润智能光伏南通有限公司 | A kind of monocrystalline half photovoltaic module row string mode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110121441A1 (en) * | 2009-11-25 | 2011-05-26 | Miasole | Diode leadframe for solar module assembly |
| CN103311349A (en) * | 2012-03-15 | 2013-09-18 | 常熟阿特斯阳光力科技有限公司 | Solar cell assembly |
| US20140305485A1 (en) * | 2012-01-13 | 2014-10-16 | Sanyo Electric Co., Ltd. | Solar cell module for in-vehicle use |
| CN206992131U (en) * | 2017-08-30 | 2018-02-09 | 通威太阳能（安徽）有限公司 | A kind of photovoltaic half component internal protection circuit attachment structure |
-
2017
- 2017-08-30 CN CN201710762148.2A patent/CN107507881A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110121441A1 (en) * | 2009-11-25 | 2011-05-26 | Miasole | Diode leadframe for solar module assembly |
| US20140305485A1 (en) * | 2012-01-13 | 2014-10-16 | Sanyo Electric Co., Ltd. | Solar cell module for in-vehicle use |
| CN103311349A (en) * | 2012-03-15 | 2013-09-18 | 常熟阿特斯阳光力科技有限公司 | Solar cell assembly |
| CN206992131U (en) * | 2017-08-30 | 2018-02-09 | 通威太阳能（安徽）有限公司 | A kind of photovoltaic half component internal protection circuit attachment structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108428767A (en) * | 2018-04-01 | 2018-08-21 | 格润智能光伏南通有限公司 | A kind of more main grid half stacked wafer moudle row string methods |
| CN108461567A (en) * | 2018-04-01 | 2018-08-28 | 格润智能光伏南通有限公司 | A kind of monocrystalline half photovoltaic module row string mode |
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