CN204304883U - A kind of band chooses the photovoltaic component frame of ear and the syndeton of purlin - Google Patents
A kind of band chooses the photovoltaic component frame of ear and the syndeton of purlin Download PDFInfo
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- CN204304883U CN204304883U CN201420708969.XU CN201420708969U CN204304883U CN 204304883 U CN204304883 U CN 204304883U CN 201420708969 U CN201420708969 U CN 201420708969U CN 204304883 U CN204304883 U CN 204304883U
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- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 18
- 210000005069 ears Anatomy 0.000 abstract description 16
- 230000008859 change Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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]
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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
本实用新型公开了一种带挑耳的光伏组件边框和檩条的连接结构，包括设于光伏组件边框上的挑耳、固定件和开设在檩条上的连接孔，挑耳是具有安装孔的片状件，挑耳位于光伏组件边框连接面的底部，连接孔位于檩条的连接面上，挑耳贴附在檩条的连接面上且安装孔与连接孔相对应，由固定件穿过该两孔固定从而将光伏组件边框固定在檩条上。本实用新型可使光伏组件边框和檩条连接稳固，阻止光伏组件边框的下滑，节省了压块的用量，本实用新型连接结构不会凸出于光伏组件边框，使得整个光伏发电站外观更为美观，光伏组件厚度变化也不会影响螺栓安装，安装灵活性强；挑耳位于光伏组件边框连接面的底部，连接挑耳和檩条的固定件长度可大大缩短，降低成本。
The utility model discloses a connection structure between a frame of a photovoltaic module and a purlin with pick ears, which comprises pick ears arranged on the frame of the photovoltaic module, a fixing piece and a connection hole set on the purlin, and the pick ears are pieces with mounting holes. The pick ear is located at the bottom of the connection surface of the photovoltaic module frame, the connection hole is located on the connection surface of the purlin, the pick ear is attached to the connection surface of the purlin and the installation hole corresponds to the connection hole, and the fixing piece passes through the two holes Fix to fix the photovoltaic module frame on the purlin. The utility model can stabilize the connection between the frame of the photovoltaic module and the purlin, prevent the frame of the photovoltaic module from sliding down, and save the amount of pressing blocks. , the thickness change of the photovoltaic module will not affect the bolt installation, and the installation flexibility is strong; the pick lug is located at the bottom of the connection surface of the photovoltaic module frame, and the length of the fixing piece connecting the pick lug and the purlin can be greatly shortened, reducing the cost.
Description
技术领域technical field
本实用新型涉及一种光伏组件边框和檩条的连接结构，特别涉及一种带挑耳的光伏组件边框和檩条的连接结构。The utility model relates to a connection structure between a photovoltaic module frame and a purlin, in particular to a connection structure between a photovoltaic module frame and a purlin with picking ears.
背景技术Background technique
檩条通常由铝或钢型材做成，其横截面一般为C型、Z型或者U型，现有光伏组件边框和檩条的连接结构包括压块、螺栓和T型螺母，压块又分为边压块和中压块。边压块和中压块的中部均为设有安装孔的安装段，边压块一侧为用于压紧光伏组件边框的压合段，边压块另一侧是用于使边压块支撑在檩条上的支撑段。边压块整体呈台阶状，包括顶面、底面和处于两者之间的中间面，及连接前述三个面的两个竖向的过渡面。Purlins are usually made of aluminum or steel profiles, and their cross-sections are generally C-shaped, Z-shaped or U-shaped. The connection structure between the existing photovoltaic module frame and purlins includes pressing blocks, bolts and T-shaped nuts. Briquetting and medium briquetting. The middle parts of the side pressing block and the middle pressing block are installation sections with installation holes, one side of the side pressing block is a pressing section for pressing the frame of the photovoltaic module, and the other side of the side pressing block is used for making the side pressing block Support section supported on purlins. The edge pressing block is generally stepped, including a top surface, a bottom surface, an intermediate surface between them, and two vertical transition surfaces connecting the aforementioned three surfaces.
边压块的顶面作为其压合段压于光伏组件边框的上侧边缘处，底面作为支撑段抵在檩条上，螺栓穿过作为边压块安装段的中间面上的安装孔锁紧在安装于檩条内的T型螺母内。中压块整体呈带外翻边的U型结构，中压块两侧都为用于压紧光伏组件边框的压合段，中压块的两翻边作为其压合段分别压住两相邻的光伏组件的边框的上侧边缘，螺栓穿过作为中压块安装段的底面上的安装孔锁紧在安装于檩条内的T型螺母内。The top surface of the side pressure block is pressed against the upper edge of the photovoltaic module frame as its pressing section, the bottom surface is used as a support section against the purlin, and the bolts pass through the mounting holes on the middle surface of the side pressure block as the installation section and are locked in place. Mounts in T-Nuts inside purlins. The middle pressure block has a U-shaped structure with outer flanges as a whole. Both sides of the middle pressure block are pressing sections for pressing the frame of the photovoltaic module. The two flanges of the middle pressure block are used as the pressing sections to press the two phases On the upper edge of the frame of the adjacent photovoltaic module, the bolts pass through the installation holes on the bottom surface of the installation section of the middle pressure block and are locked in the T-nuts installed in the purlins.
上述连接结构存在以下缺陷：⑴压块用量大，连接压块和檩条的螺栓长度较长；⑵檩条内卷边通常须做齿牙，这样，增加了加工工序，延长了加工工期；⑶光伏组件和压块之间仅靠接触位置的摩擦力固定，在恒载重力和活载雪荷载作用下，光伏组件易从压块下滑脱；⑷施工过程中，拧紧压块上的螺栓时，T型螺母需要人为的固定在檩条的凹槽内，操作不便，且螺母易在檩条的凹槽内旋转，导致压块压不紧；⑸边压块灵活性不好，如果使用了多种厚度的光伏组件，就对应需要相同种类数量的边压块；⑹压块凸出于光伏组件边框，影响整个光伏发电站的美观性。The above-mentioned connection structure has the following defects: (1) the amount of pressing blocks is large, and the length of the bolts connecting the pressing blocks and the purlins is relatively long; (2) the inner curling of the purlins usually needs to be made of teeth, which increases the processing procedure and prolongs the processing period; (3) photovoltaic modules It is only fixed by the friction force at the contact position between the briquetting block and the photovoltaic module. Under the action of dead load gravity and live snow load, the photovoltaic module is easy to slip off from the briquetting block; The nut needs to be artificially fixed in the groove of the purlin, which is inconvenient to operate, and the nut is easy to rotate in the groove of the purlin, causing the pressing block to not be tightly pressed; (5) The flexibility of the side pressing block is not good. Modules require the same number of side pressing blocks; ⑹The pressing blocks protrude from the frame of the photovoltaic module, which affects the aesthetics of the entire photovoltaic power station.
实用新型内容Utility model content
本实用新型的目的在于提供一种结构简单、成本低、安装方便、连接稳固、工期短、美观的带挑耳的光伏组件边框和檩条的连接结构。The purpose of the utility model is to provide a simple structure, low cost, convenient installation, stable connection, short construction period, and beautiful photovoltaic module frame and purlin connection structure with pick ears.
本实用新型的上述目的通过以下的技术措施来实现：一种带挑耳的光伏组件边框和檩条的连接结构，其特征在于：包括设于光伏组件边框上的挑耳、固定件和开设在檩条上的连接孔，所述挑耳是具有安装孔的片状件，所述挑耳位于光伏组件边框连接面的底部，所述连接孔位于檩条的连接面上，所述挑耳贴附在檩条的连接面上且安装孔与连接孔相对应，并由固定件穿过该两孔固定从而将光伏组件边框固定在檩条上。The above purpose of the utility model is achieved through the following technical measures: a connection structure between a photovoltaic module frame and a purlin with pick ears, which is characterized in that it includes pick ears, fixing parts and purlins set on the frame of the photovoltaic module. The connection hole on the top, the pick ear is a sheet-like piece with a mounting hole, the pick ear is located at the bottom of the connection surface of the photovoltaic module frame, the connection hole is located on the connection surface of the purlin, and the pick ear is attached to the purlin The mounting holes on the connection surface correspond to the connection holes, and the fixing parts are fixed through the two holes so as to fix the frame of the photovoltaic module on the purlin.
本实用新型可使光伏组件边框和檩条连接稳固，阻止光伏组件边框的下滑，与现有的连接结构相比，由于不完全依靠压块与光伏组件边框接触面的摩擦力来固定光伏组件，因此，光伏组件不易滑脱，从而节省了压块的用量，而且本实用新型连接结构不会凸出于光伏组件边框，使得整个光伏发电站外观更为美观，光伏组件的厚度变化也不会影响螺栓的安装，安装灵活性强；另外，挑耳位于光伏组件边框连接面的底部，因此连接挑耳和檩条的固定件的长度可大大缩短，降低成本。The utility model can stabilize the connection between the frame of the photovoltaic module and the purlin, and prevent the frame of the photovoltaic module from sliding down. Compared with the existing connection structure, the photovoltaic module is not fixed entirely by the friction force between the contact surface of the pressing block and the frame of the photovoltaic module. , the photovoltaic module is not easy to slip off, thereby saving the amount of pressing blocks, and the connection structure of the utility model will not protrude from the frame of the photovoltaic module, making the appearance of the entire photovoltaic power station more beautiful, and the thickness change of the photovoltaic module will not affect the bolts. Installation, strong installation flexibility; in addition, the lugs are located at the bottom of the connection surface of the photovoltaic module frame, so the length of the fixing parts connecting the lugs and purlins can be greatly shortened, reducing costs.
作为本实用新型的一种实施方式，所述挑耳与光伏组件边框一体制成。As an embodiment of the present utility model, the pick lug is integrally made with the frame of the photovoltaic module.
作为本实用新型的一种优选实施方式，所述光伏组件边框为矩形，所述挑耳分设于光伏组件边框的两侧面上，即该侧面作为所述光伏组件边框的连接面，位于每个侧面上的挑耳至少为2个，所述挑耳沿着该侧面的长度方向分布。As a preferred embodiment of the present invention, the frame of the photovoltaic module is rectangular, and the protruding lugs are respectively arranged on both sides of the frame of the photovoltaic module, that is, the side is used as the connection surface of the frame of the photovoltaic module and is located on each side. There are at least two picking ears on the top, and the picking ears are distributed along the length direction of the side.
作为本实用新型的一种实施方式，所述檩条采用C型钢，所述檩条的其中一侧面作为所述檩条的连接面，所述连接孔沿着檩条连接面的长度方向分布。As an embodiment of the present invention, the purlin is made of C-shaped steel, one side of the purlin is used as the connection surface of the purlin, and the connection holes are distributed along the length direction of the connection surface of the purlin.
作为本实用新型的另一种实施方式，所述檩条采用Z型钢，所述檩条的其中一侧面作为所述檩条的连接面，所述连接孔沿着檩条连接面的长度方向分布。As another embodiment of the present invention, the purlin is made of Z-shaped steel, one side of the purlin is used as the connection surface of the purlin, and the connection holes are distributed along the length direction of the connection surface of the purlin.
作为本实用新型的再一种实施方式，所述檩条采用U型钢，所述檩条的底面作为所述檩条的连接面，所述连接孔沿着檩条连接面的长度方向分布。As yet another embodiment of the present invention, the purlin is made of U-shaped steel, the bottom surface of the purlin is used as the connection surface of the purlin, and the connection holes are distributed along the length direction of the connection surface of the purlin.
作为本实用新型的一种改进，所述安装孔是沿着光伏组件边框长度方向延伸的长形孔，所述连接孔是沿着檩条长度方向延伸的长形孔，便于施工精准定位连接光伏组件边框和檩条。As an improvement of the utility model, the installation hole is an elongated hole extending along the length direction of the frame of the photovoltaic module, and the connection hole is an elongated hole extending along the length direction of the purlin, which is convenient for construction and precise positioning to connect the photovoltaic module Borders and purlins.
作为本实用新型的一种优选实施方式，所述固定件采用不锈钢螺母和不锈钢螺栓，所述螺栓穿过安装孔和连接孔并由螺母套于螺栓上旋入而将光伏组件边框锁紧在檩条上，因此不用另外在檩条的内卷边上制作齿牙，可缩短施工和加工工期。As a preferred embodiment of the present utility model, the fixing member adopts stainless steel nuts and stainless steel bolts, and the bolts pass through the installation holes and connection holes and are screwed in by the nuts on the bolts to lock the frame of the photovoltaic module on the purlins. Therefore, there is no need to make teeth on the inner curl of the purlin, which can shorten the construction and processing period.
与现有技术相比，本实用新型具有如下显著的效果：Compared with the prior art, the utility model has the following remarkable effects:
⑴本实用新型可使光伏组件边框和檩条连接稳固，阻止光伏组件边框的下滑，与现有的连接结构相比，由于不完全依靠压块与光伏组件边框接触面的摩擦力来固定光伏组件，因此，光伏组件不易滑脱，从而节省了压块的用量。(1) The utility model can stabilize the connection between the frame of the photovoltaic module and the purlin, and prevent the frame of the photovoltaic module from sliding down. Compared with the existing connection structure, the photovoltaic module is not completely fixed by the friction force between the contact surface of the pressing block and the frame of the photovoltaic module. Therefore, the photovoltaic module is not easy to slip, thereby saving the amount of pressing blocks.
⑵本实用新型连接结构不会凸出于光伏组件边框，使得整个光伏发电站外观更为美观，光伏组件的厚度变化也不会影响螺栓的安装，安装灵活性强。(2) The connection structure of the utility model will not protrude from the frame of the photovoltaic module, making the appearance of the entire photovoltaic power station more beautiful, and the thickness change of the photovoltaic module will not affect the installation of bolts, and the installation flexibility is strong.
⑶挑耳位于光伏组件边框连接面的底部，因此连接挑耳和檩条的固定件的长度可大大缩短，降低成本。(3) The lugs are located at the bottom of the connecting surface of the photovoltaic module frame, so the length of the fixing parts connecting the lugs and the purlins can be greatly shortened and the cost can be reduced.
⑷安装孔和连接孔均为长形孔，便于施工精准定位连接光伏组件边框和檩条。⑷The mounting holes and connection holes are both elongated holes, which are convenient for construction and precise positioning to connect photovoltaic module frames and purlins.
附图说明Description of drawings
下面结合附图和具体实施例对本实用新型作进一步的详细说明。Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.
图1是设有挑耳的光伏组件边框俯视图；Figure 1 is a top view of the frame of the photovoltaic module with pick ears;
图2是沿图1中A-A线剖视图；Fig. 2 is a sectional view along line A-A in Fig. 1;
图3是沿图1中B-B线剖视图；Fig. 3 is a sectional view along line B-B in Fig. 1;
图4是设有挑耳的光伏组件边框的局部侧视图；Fig. 4 is a partial side view of the frame of the photovoltaic module provided with pick ears;
图5是设有连接孔的Z型钢檩条横截面示意图；Fig. 5 is a schematic cross-sectional diagram of a Z-shaped steel purlin provided with connecting holes;
图6是设有连接孔的C型钢檩条横截面示意图；Fig. 6 is a schematic cross-sectional view of a C-shaped steel purlin provided with connecting holes;
图7是设有连接孔的U型钢檩条横截面示意图。Fig. 7 is a schematic cross-sectional view of a U-shaped steel purlin provided with connecting holes.
具体实施方式Detailed ways
如图1～5所示，是本实用新型一种带挑耳的光伏组件边框和檩条的连接结构，包括设于光伏组件边框1上的挑耳11、固定件和开设在檩条2上的连接孔21，光伏组件边框1上安装有组件玻璃3，挑耳11是具有安装孔12的片状件，挑耳11与光伏组件边框1一体制成，挑耳11位于光伏组件边框1连接面的底部，在本实施例中，光伏组件边框1为矩形，挑耳11分设于光伏组件边框1的两侧面上，即该侧面作为光伏组件边框的连接面13，位于每个侧面上的挑耳为2个，挑耳11沿着该侧面的长度方向分布，安装孔12是沿着光伏组件边框长度方向延伸的长形孔；连接孔21位于檩条2的连接面上，在本实施例中，檩条采用Z型钢，檩条2的其中一侧面为檩条2的连接面22，连接孔21沿着檩条2的连接面22的长度方向分布，连接孔21是沿着檩条2长度方向延伸的长形孔，挑耳11贴附在檩条2的连接面22上且安装孔12与连接孔21相对应，并由固定件穿过该两孔固定从而将光伏组件边框固定在檩条上，具体是：固定件采用不锈钢螺母和不锈钢螺栓，螺栓穿过安装孔和连接孔并由螺母旋入螺栓而将光伏组件边框锁紧在檩条上。As shown in Figures 1 to 5, it is a connection structure between a photovoltaic module frame and a purlin with picking ears of the present invention, including the picking ears 11 arranged on the photovoltaic module frame 1, the fixing parts and the connection set on the purlin 2 Hole 21, the module glass 3 is installed on the frame 1 of the photovoltaic module. Bottom, in this embodiment, the photovoltaic module frame 1 is rectangular, and the pick ears 11 are separately arranged on both sides of the photovoltaic module frame 1, that is, the side is used as the connecting surface 13 of the photovoltaic module frame, and the pick ears on each side are 2, the pick ears 11 are distributed along the length direction of the side, and the mounting holes 12 are elongated holes extending along the length direction of the frame of the photovoltaic module; the connection holes 21 are located on the connection surface of the purlin 2, and in this embodiment, the purlin Adopt Z-shaped steel, one of the sides of the purlin 2 is the connection surface 22 of the purlin 2, the connection holes 21 are distributed along the length direction of the connection surface 22 of the purlin 2, and the connection holes 21 are elongated holes extending along the length direction of the purlin 2, The pick ear 11 is attached to the connecting surface 22 of the purlin 2 and the mounting hole 12 corresponds to the connecting hole 21, and the fixing part is fixed through the two holes so as to fix the frame of the photovoltaic module on the purlin, specifically: the fixing part adopts Stainless steel nuts and stainless steel bolts, the bolts pass through the installation holes and connecting holes and the nuts are screwed into the bolts to lock the frame of the photovoltaic module on the purlins.
本实用新型的安装过程如下：将螺栓穿入安装孔和连接孔中，再将螺母套在螺栓上，操作扳手使螺母卡紧在檩条上，即完成安装。The installation process of the utility model is as follows: the bolt is penetrated into the installation hole and the connection hole, then the nut is put on the bolt, and the nut is clamped on the purlin by operating the wrench, and the installation is completed.
在其它实施例中，如图6所示，檩条2采用C型钢，檩条2的其中一侧面为檩条的连接面22，连接孔21沿着檩条2连接面22的长度方向分布。如图7所示，檩条2采用U型钢，檩条2的底面为檩条2的连接面22，连接孔21沿着檩条2连接面22的长度方向分布。In other embodiments, as shown in FIG. 6 , the purlin 2 is made of C-shaped steel, one side of the purlin 2 is the connecting surface 22 of the purlin, and the connecting holes 21 are distributed along the length direction of the connecting surface 22 of the purlin 2 . As shown in FIG. 7 , the purlin 2 is made of U-shaped steel, the bottom surface of the purlin 2 is the connection surface 22 of the purlin 2 , and the connection holes 21 are distributed along the length direction of the connection surface 22 of the purlin 2 .
本实用新型的实施方式不限于此，根据本实用新型的上述内容，按照本领域的普通技术知识和惯用手段，本实用新型檩条还可以采用其它结构，可根据檩条的具体结构选择其连接面并开设连接孔；固定件除了采用螺栓和螺母之外，也可采用其它形式。因此本实用新型还可以做出其它多种形式的修改、替换或变更，均落在本实用新型权利保护范围之内。The embodiment of the utility model is not limited thereto. According to the above content of the utility model, according to the common technical knowledge and conventional means in this field, the purlin of the utility model can also adopt other structures, and the connecting surface can be selected according to the specific structure of the purlin. Provide connecting holes; besides bolts and nuts, other forms can also be used for the fixing parts. Therefore, the utility model can also be modified, replaced or changed in various forms, all of which fall within the protection scope of the utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708969.XU CN204304883U (en) | 2014-11-21 | 2014-11-21 | A kind of band chooses the photovoltaic component frame of ear and the syndeton of purlin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708969.XU CN204304883U (en) | 2014-11-21 | 2014-11-21 | A kind of band chooses the photovoltaic component frame of ear and the syndeton of purlin |
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| CN204304883U true CN204304883U (en) | 2015-04-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525882A (en) * | 2020-06-05 | 2020-08-11 | 江西晶科光伏材料有限公司 | Frame profile structure convenient to component mounting |
| CN116317846A (en) * | 2023-04-28 | 2023-06-23 | 常州时创能源股份有限公司 | Connection structure and connection method of photovoltaic module and purline |
| CN119727538A (en) * | 2024-12-20 | 2025-03-28 | 中国电建集团贵州电力设计研究院有限公司 | Photovoltaic module fixing structure and installation method |
-
2014
- 2014-11-21 CN CN201420708969.XU patent/CN204304883U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525882A (en) * | 2020-06-05 | 2020-08-11 | 江西晶科光伏材料有限公司 | Frame profile structure convenient to component mounting |
| CN116317846A (en) * | 2023-04-28 | 2023-06-23 | 常州时创能源股份有限公司 | Connection structure and connection method of photovoltaic module and purline |
| CN119727538A (en) * | 2024-12-20 | 2025-03-28 | 中国电建集团贵州电力设计研究院有限公司 | Photovoltaic module fixing structure and installation method |
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