CN216142296U - High-cost-performance photovoltaic module quick mounting structure - Google Patents

High-cost-performance photovoltaic module quick mounting structure Download PDF

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Publication number
CN216142296U
CN216142296U CN202121850793.8U CN202121850793U CN216142296U CN 216142296 U CN216142296 U CN 216142296U CN 202121850793 U CN202121850793 U CN 202121850793U CN 216142296 U CN216142296 U CN 216142296U
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China
Prior art keywords
mortise
tenon
photovoltaic
photovoltaic module
tenon structure
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CN202121850793.8U
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Chinese (zh)
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陈维
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Jiangsu Xumaisi Energy Technology Co ltd
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Jiangsu Xumaisi Energy Technology Co ltd
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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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • 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)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

The utility model relates to a high-cost-performance photovoltaic assembly quick mounting structure which comprises a plurality of bearing strips, a plurality of photovoltaic plates arranged on the bearing strips and mortise and tenon structures connected between the bearing strips and the photovoltaic plates, so that the photovoltaic plates are mounted on the bearing strips through the mortise and tenon structures, and the efficiency of mounting the photovoltaic assemblies is improved. The photovoltaic module mounting structure is scientific and reasonable in design and simple in structure, compared with the prior art, the photovoltaic module mounting structure can be compatible with an existing fixing support for mounting the photovoltaic module, and the fast mounting transformation of the support can be completed by adding the mortise and tenon structure on the basis of the existing fixing support, so that the positioning of the photovoltaic module can be completed fast, and the mounting efficiency of a photovoltaic system can be improved to a great extent; and the mounting structure is cheap in cost and low in cost, reduces the cost on the premise of improving the mounting efficiency, and is worth popularizing.

Description

High-cost-performance photovoltaic module quick mounting structure
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module rapid installation structure with high cost performance.
Background
At present, photovoltaic supports are arranged on the ground and on the roof and used for supporting photovoltaic modules, basically inclined beams and purlins are used as main bearing structures, and corresponding quantity of stand columns and pull bars are arranged in an auxiliary mode to support structures such as the inclined beams and the purlins so as to meet corresponding installation and construction requirements. Conventional fixing supports have been widely used, in which the specific gravity of the inclined beams and the purlines accounts for more than 70%, and when the photovoltaic supports are installed on the color steel tile roofs in a tiled mode, the specific gravity of the purlines even reaches nearly 90%.
The combination of the traditional fixed support and the photovoltaic module has two modes: the first method is to fasten the photovoltaic module on the photovoltaic bracket through a fixing piece or a bolt; the second is through inserting the vertical minor face and the horizontal long limit of photovoltaic module in the purlin of aluminum alloy ex-trusions.
When the fixing piece is fastened, the photovoltaic module is difficult to align and position on the photovoltaic support, and although the photovoltaic module is easy to position through bolt fastening, the number of steps is large, so that the two methods are not beneficial to quick installation of the photovoltaic module. The purlines of the aluminum alloy profiles are inserted into the vertical short edges and the transverse long edges of the photovoltaic modules, so that the photovoltaic modules can be quickly installed, but the purlines of the aluminum alloy profiles are high in cost and not beneficial to reducing the cost of the photovoltaic support; simultaneously, the higher requirement has been proposed to photovoltaic module's frame structure when vertical minor face inserts, and has increased the purlin quantity again when horizontal long limit inserts, also does not benefit to the cost that reduces the photovoltaic support.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a photovoltaic module quick mounting structure with high cost performance.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a high price/performance ratio's quick mounting structure of photovoltaic module, includes a plurality of bearing strip, sets up a plurality of photovoltaic boards on bearing strip and connects the mortise and tenon structure between bearing strip and photovoltaic board to the photovoltaic board passes through mortise and tenon structrual installation on bearing strip, thereby promotes the efficiency of installation photovoltaic module.
The utility model is further configured to: the photovoltaic panel is characterized in that a frame is fixed on the side of the photovoltaic panel, the mortise and tenon structure comprises a mortise component fixed on the carrying strip and a tenon structure body formed at the bottom of the frame, mortise structure bodies matched with the mortise structure bodies are arranged on two sides of an inner cavity of the mortise component, and the mortise structure bodies are respectively clamped in the two mortise structure bodies of the mortise component, so that mortise and tenon engagement of the mortise structure bodies and the mortise structure bodies is realized.
The utility model is further configured to: the spread groove has been seted up to the carrier bar, the mortise joint component be equipped with two with spread groove assorted arch, two the protruding card is arranged in the spread groove to realize that the mortise joint component is connected with the carrier bar, the arch of mortise joint component plays spacing effect.
The utility model is further configured to: the mortise and tenon structure further comprises at least one fixing piece, wherein the fixing piece is clamped on the side edge of the frame, so that the fixing piece is clamped on the side edge of the tenon structure body, and the mortise and tenon engagement looseness of the tenon structure body and the mortise and tenon connecting component arranged on the frame is limited.
The utility model is further configured to: the mortise and tenon structure further comprises a locking piece, and the fixing piece and the mortise and tenon component are fixed on the bearing strip through the locking piece.
The utility model is further configured to: the frame is provided with an embedded groove matched with the photovoltaic panel, and the photovoltaic panel is embedded into the embedded groove of the frame to realize the fixed connection of the photovoltaic panel and the frame.
The utility model is further configured to: photovoltaic board is equipped with two, two photovoltaic board symmetry is installed on mortise and tenon structure to realize that two photovoltaic boards pass through mortise and tenon structure symmetrical arrangement.
The utility model is further configured to: the photovoltaic panel is characterized in that the carrying strip is provided with three carrying strips, the three carrying strips are correspondingly arranged in parallel at intervals, the mortise and tenon structure is arranged on the carrying strip in the middle and is respectively connected with the two photovoltaic panels, and the two side sides of each photovoltaic panel are fixed on the carrying strip beside through the blank pressing block assemblies so as to realize that the photovoltaic panels are arranged on the carrying strips.
The utility model is further configured to: the photovoltaic panel is characterized in that the carrying strips are three, the carrying strips are correspondingly arranged in parallel at intervals, the mortise and tenon structures are arranged on the carrying strips in the middle and are respectively connected with the two photovoltaic panels, and the mortise and tenon structures are also arranged on the two carrying strips beside the photovoltaic panels and are respectively connected with the photovoltaic panels so as to realize that the photovoltaic panels are arranged on the carrying strips.
Another object of the utility model is:
a method for installing a photovoltaic module quick installation structure with high cost performance comprises the following steps:
the method comprises the following steps: completing the installation of a support column, a support beam and three bearing strips on the ground or a flat roof to form a plane for installing the photovoltaic panel; or the installation of three bearing strips is completed on the inclined roof to form a plane for installing the photovoltaic panel;
step two: completing the positioning and arrangement of the riveting components on the middle bearing strip, and fixedly installing the frame on the photovoltaic panel;
step three: mortise and tenon engagement is realized by mortise and tenon structures of the two photovoltaic panel frames respectively in the two mortise and tenon structures of the middle carrying bar mortise-tenon connecting component, and the two photovoltaic panels are symmetrically arranged through the mortise and tenon connecting component;
step four: fixing two sides of the photovoltaic panel on the corresponding carrying strips at the edges by using the edge pressing block assembly, or fixing the frames of the photovoltaic panel on the corresponding carrying strips at the edges by using the mortise and tenon structure, and clamping the fixing piece between the two frames to finish the pre-installation of the two symmetrically arranged photovoltaic panels;
step five: mortise and tenon engagement is realized by mortise and tenon structures of the other two photovoltaic panel frames into the two mortise structures of the mortise-tenon connecting component of the middle carrying strip respectively, and the two photovoltaic panels are symmetrically arranged through the mortise-tenon connecting component; and repeating the step four;
step six: and repeating the fifth step until the arrangement of one set of photovoltaic panels is completed, and fixing the fixing piece and the riveting component on the bearing strip by utilizing the locking piece to complete the installation of one set of photovoltaic panels.
In conclusion, the beneficial technical effects of the utility model are as follows:
1. the photovoltaic module mounting structure is scientific and reasonable in design and simple in structure, compared with the prior art, the photovoltaic module mounting structure can be compatible with an existing fixing support for mounting the photovoltaic module, and the fast mounting transformation of the support can be completed by adding the mortise and tenon structure on the basis of the existing fixing support, so that the positioning of the photovoltaic module can be completed fast, and the mounting efficiency of a photovoltaic system can be improved to a great extent; the mounting structure is low in manufacturing cost and low in cost, the cost is reduced on the premise of improving the mounting efficiency, and the mounting structure is worthy of vigorous popularization;
2. compared with the traditional fixed support, the using amount of the bearing strip is greatly reduced, and the cost of the photovoltaic support is reduced; when the color steel tile roof is applied, the cost of the bracket can be reduced by more than 35% when the vertical arrangement is adopted;
3. the mortise and tenon interlocking is realized at the mortise and tenon structural body of the mortise connecting component and the tenon structural body of the photovoltaic plate frame, the mortise and tenon interlocking is not loosened under the large load prevented by the fixing part, the middle bearing strip and the frames of the upper row of photovoltaic plates and the lower row of photovoltaic plates form an integral structure, the sectional area of the middle bearing strip is increased, the bending resistance is enhanced, the stress deformation of the photovoltaic plates is reduced, the sectional area requirements of the frames and the middle bearing strip of the photovoltaic plates are reduced, and the overall cost is further reduced.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic view of the present invention installed on the ground or flat roof;
FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;
fig. 4 is a schematic structural view of the present invention arranged on a pitched roof (color steel tile roof).
In the figure, 1, a support column; 2. a support beam; 3. a carrier strip; 31. connecting grooves; 4. a photovoltaic panel; 41. a frame; 411. caulking grooves; 5. mortise and tenon structure; 51. a mortise connection component; 511. a mortise structure body; 512. a protrusion; 52. a tenon structure; 53. a fixing member; 54. a locking member; 6. the edge pressing block component.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, the photovoltaic module quick installation structure with high cost performance disclosed by the utility model comprises at least one support column 1, at least one support beam 2 installed on the support column 1, three bearing strips 3 installed on the support beam 2, a plurality of photovoltaic panels 4 positioned above the bearing strips 3, and a mortise and tenon structure 5 connected between the bearing strips 3 and the photovoltaic panels 4, so that the photovoltaic panels 4 are conveniently installed on the bearing strips 3 through the mortise and tenon structure 5, and the efficiency of installing the photovoltaic modules is improved.
In this embodiment, the number of the support columns 1 is preferably two, the two support columns 1 are arranged in parallel, the number of the support beams 2 is preferably two, and the support beams 2 are fixed on the support columns 1 at an angle to the horizontal direction, so that the photovoltaic modules arranged on the support beams 2 are irradiated by sunlight. The side of photovoltaic board 4 fixed mounting has frame 41, and frame 41 sets up with photovoltaic board 4 assorted caulking groove 411, and photovoltaic board 4 imbeds in the caulking groove 411 of frame 41 to photovoltaic board 4 and frame 41 fixed connection. The three bearing strips 3 are correspondingly arranged on the supporting beam 2 in parallel at intervals, and the bearing strips 3 are vertically fixed with the supporting beam 2, wherein the mortise and tenon structure 5 is arranged on the bearing strip 3 in the middle, and the mortise and tenon structure 5 is simultaneously connected and fixed with the two photovoltaic panels 4, so that the two photovoltaic panels 4 are symmetrically arranged on the mortise and tenon structure 5, and the two photovoltaic panels 4 are symmetrically arranged through the mortise and tenon structure 5; because the supporting beam 2 is obliquely arranged, one photovoltaic plate 4 is positioned above the mortise and tenon structure 5, and the other photovoltaic plate is positioned below the mortise and tenon structure 5; the mortise and tenon structures 5 can be arranged on the two adjacent carrying strips 3, so that the two sides of the photovoltaic panel 4 are fixedly connected with the mortise and tenon structures 5 through the frames 41, and the efficiency of mounting the photovoltaic panel 4 is improved; referring to fig. 2, two adjacent carrying strips 3 are fixedly connected with two sides of the photovoltaic panel 4 through the traditional edge pressing block assemblies 6, one side of the photovoltaic panel 4 is spliced with the mortise and tenon structure 5 through the frame 41, and the other two sides of the photovoltaic panel are spliced with the edge pressing block assemblies 6.
The mortise and tenon structure 5 comprises a mortise and tenon component 51 connected with the bearing strip 3, at least two tenon structure bodies 52, at least one fixing piece 53 and at least one locking piece 54, the simplest mortise and tenon structure 5 comprises the mortise and tenon component 51, two tenon structure bodies 52, the fixing piece 53 and the locking piece 54, the tenon structure bodies 52 are formed at the bottoms of the frames 41, the mortise and tenon structure bodies 511 matched with the tenon structure bodies 52 are arranged on two sides of the inner cavity of the mortise and tenon component 51, the two tenon structure bodies 52 are respectively clamped in the two mortise and tenon structure bodies 511 to realize mortise and tenon engagement of the mortise and tenon structure bodies 52 and 511, and the fixing piece 53 is clamped between the two frames 41, namely the fixing piece 53 is clamped at the side edge of the frame 41 to limit mortise and tenon engagement looseness generated between the mortise and tenon structure bodies 52 and the mortise and tenon connection component 51. In this embodiment, it sets up to bear strip 3 to be "concave" font to the spread groove 31 has been seted up to bear strip 3, and the bottom of mortise joint component 51 is equipped with two and spread groove 31 assorted arch 512, and two protruding 512 cards are arranged in spread groove 31, and arch 512 plays limiting displacement, makes things convenient for the mortise joint component 51 and bears strip 3 location, is connected with bearing strip 3 with the realization mortise joint component 51. A boss is arranged between the two mortise structure bodies 511 of the mortise connecting component 51 and is positioned in the inner cavity of the mortise connecting component 51, when the tenon structure body 52 is clamped in the mortise structure bodies 511 to realize mortise and tenon engagement of the tenon structure body 52 and the mortise structure bodies 511, the frame 41 is abutted against the boss, and therefore the boss plays a role in limiting mortise and tenon engagement looseness of the tenon structure body 52 and the mortise structure bodies 511. The fixing member 53 is disposed in a concave shape in cross section, and referring to fig. 2 and 3, the fixing member 53 may be disposed in a long strip shape, and of course, the fixing member 53 may also be disposed in a small block shape. The locking member 54 is a bolt assembly, wherein the nut of the bolt assembly is different from a common nut, and more like a plate in threaded connection with the bolt, the nut of the bolt assembly has a limiting function, and when the fixing member 53 abuts against the boss and is clamped between the two frames 41, the fixing member 53 and the riveting member 51 are penetrated through by the locking member 54 and are clamped and fixed with the groove wall of the connecting groove 31 of the carrier strip 3; so as to fix the fixing piece 53, the mortise-and-tenon joint member 51 and the carrier bar 3 together, and to restrict the fixing piece 53 from coming out from between the two tenon structures 52, so as to restrict the tenon structures 52 from being loosely engaged with the mortise structures 511.
When the mortise and tenon structures 5 are installed on the three carrying strips 3, the frames 41 on two sides of the two photovoltaic panels 4 which are symmetrically arranged are connected with the frames 41, and at the moment, the frame 41 on the outermost side is not connected with the photovoltaic panel 4.
Referring to fig. 4, the simplest installation method of the roof is different from the above installation method in the way of installing on an inclined roof, such as a color steel tile roof: the supporting column 1 and the supporting beam 2 are not required to be arranged; wherein, figure 4 sets up four bearing strip 3 that are parallel to each other for corresponding the interval, is equipped with three photovoltaic boards 4 on the bearing strip 3, and three photovoltaic boards 4 are the sharp setting, and two middle bearing strip 3 and photovoltaic board 4 are connected fixedly through mortise and tenon structure 5, and two next door bearing strip 3 are connected fixedly through blank pressing block subassembly 6 and photovoltaic board 4's both sides.
The installation method of the photovoltaic module quick installation structure comprises the following steps: the method comprises the following steps:
the method comprises the following steps: the installation of a support column 1, a support beam 2 and at least three parallel carrying strips 3 is completed on the ground or a flat roof, the support beam 2 is arranged at an angle with the horizontal direction, and the three carrying strips 3 are correspondingly arranged at intervals and are all vertical to the support beam 2 to form a plane for installing a photovoltaic panel 4; or two parallel supporting beams 2 and three parallel carrying strips 3 are arranged on the inclined roof, and the three carrying strips 3 are correspondingly arranged at intervals and are perpendicular to the supporting beams 2 to form a plane for mounting the photovoltaic panel 4;
step two: completing the positioning and arrangement of the riveting component 51 on the middle bearing strip 3, and fixedly installing the frame 41 on the side of the photovoltaic panel 4;
step three: mortise and tenon engagement is realized by mortise and tenon structures 52 of the frames 41 of the two photovoltaic panels 4 into two mortise and tenon structures 511 of the mortise and tenon connecting member 51 of the middle carrying bar 3, and the two photovoltaic panels 4 are symmetrically arranged through the mortise and tenon connecting member 51;
step four: fixing two sides of a photovoltaic panel 4 on corresponding edge bearing strips 3 by using an edge pressing block assembly 6, or fixing frames 41 on the sides of the photovoltaic panel 4 on the corresponding edge bearing strips 3 by using a mortise and tenon structure 5, and clamping a fixing piece 53 between the two frames 41 to finish the pre-installation of the two symmetrically arranged photovoltaic panels 4;
step five: mortise and tenon engagement is realized by mortise and tenon structures 52 of the frames 41 of the other two photovoltaic panels 4 into two mortise and tenon structures 511 of the mortise and tenon connecting member 51 of the middle carrying bar 3, the two photovoltaic panels 4 are symmetrically arranged through the mortise and tenon connecting member 51, and the fourth step is repeated;
step six: and repeating the fifth step until the arrangement of one set of photovoltaic panels 4 is completed, and fixing pieces 53 and the riveting members 51 are fixed on the carrying strip 3 by utilizing the locking pieces 54, so that the installation of one set of photovoltaic panels 4 is completed.
This is the most preferred installation step of the installation method of the quick mounting structure of photovoltaic module, and of course, in the in-service use process, can be as required nimble exchange step of installing to promote the efficiency of installation.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims (8)

1. The utility model provides a quick mounting structure of high performance price ratio's photovoltaic module which characterized in that: including a plurality of bearing strip (3), set up a plurality of photovoltaic board (4) on bearing strip (3) and connect mortise and tenon structure (5) between bearing strip (3) and photovoltaic board (4) to install on bearing strip (3) through mortise and tenon structure (5) photovoltaic board (4), the avris of photovoltaic board (4) is fixed with frame (41), mortise and tenon structure (5) are including fixing mortise and tenon component (51) on bearing strip (3) and tenon structure (52) that form bottom frame (41), the both sides of mortise and tenon component (51) inner chamber are equipped with mortise and tenon structure (511) with mortise and tenon structure (52) matched with, two mortise and tenon structure (52) are blocked respectively in two mortise and tenon structures (511) of mortise and tenon component (51), realize mortise and tenon structure (52) and mortise and tenon structure (511) interlock.
2. A cost effective photovoltaic module quick mount structure as claimed in claim 1, wherein: the connecting groove (31) has been seted up in bearing strip (3), mortise joint component (51) are equipped with two and connecting groove (31) assorted arch (512), two in connecting groove (31) are arranged in to arch (512) card to realize that mortise joint component (51) is connected with bearing strip (3), the arch (512) of mortise joint component (51) play spacing effect.
3. A cost effective photovoltaic module quick mount structure as claimed in claim 1, wherein: the mortise and tenon structure (5) further comprises at least one fixing piece (53), wherein the fixing piece (53) is clamped on the side edge of the frame (41), so that the fixing piece (53) is clamped on the side edge of the tenon structure body (52) to limit the mortise and tenon meshing looseness between the tenon structure body (52) arranged on the frame (41) and the mortise and tenon connecting component (51).
4. A cost effective photovoltaic module quick mount structure as claimed in claim 3, wherein: the mortise and tenon structure (5) further comprises a locking piece (54), and the fixing piece (53) and the mortise and tenon component (51) are fixed on the carrying strip (3) through the locking piece (54).
5. A cost effective photovoltaic module quick mount structure as claimed in claim 1, wherein: the embedded groove (411) matched with the photovoltaic panel (4) is formed in the frame (41), the photovoltaic panel (4) is embedded into the embedded groove (411) of the frame (41), and the photovoltaic panel (4) is fixedly connected with the frame (41).
6. A cost effective photovoltaic module quick mount structure as claimed in claim 1, wherein: photovoltaic board (4) are equipped with two, two photovoltaic board (4) symmetry is installed on mortise and tenon structure (5) to realize that two photovoltaic board (4) pass through mortise and tenon structure (5) symmetrical arrangement.
7. A cost effective photovoltaic module quick mount structure as claimed in claim 1 or 6, wherein: the photovoltaic panel is characterized in that the carrying strip (3) is provided with three bearing strips, three bearing strips (3) are arranged in parallel and at intervals, the mortise and tenon structure (5) is arranged on the middle bearing strip (3) and is respectively connected with the two photovoltaic panels (4), and the two side sides of each photovoltaic panel (4) are fixed on the bearing strip (3) on the side through the blank pressing block assemblies (6) so as to realize that the photovoltaic panels (4) are installed on the bearing strip (3).
8. A cost effective photovoltaic module quick mount structure as claimed in claim 1 or 6, wherein: the photovoltaic power generation system load supporting system is characterized in that the load-carrying strip (3) has three, three are carried the load carrying strips (3) are carried and the load carrying strips (3) are parallel and are arranged at interval, and are connected with two respectively, the photovoltaic panel (4) is carried.
CN202121850793.8U 2021-08-09 2021-08-09 High-cost-performance photovoltaic module quick mounting structure Active CN216142296U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121850793.8U CN216142296U (en) 2021-08-09 2021-08-09 High-cost-performance photovoltaic module quick mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121850793.8U CN216142296U (en) 2021-08-09 2021-08-09 High-cost-performance photovoltaic module quick mounting structure

Publications (1)

Publication Number Publication Date
CN216142296U true CN216142296U (en) 2022-03-29

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CN202121850793.8U Active CN216142296U (en) 2021-08-09 2021-08-09 High-cost-performance photovoltaic module quick mounting structure

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