Corner key and photovoltaic module

Abstract

The utility model discloses a corner key and a photovoltaic assembly. The corner key comprises a main body, a clamping plate and an installation key. The main body comprises a first side face, a second side face, a third side face and a fourth side face which are sequentially connected, and a top face and a bottom face which are oppositely arranged. The clamping plate comprises a connecting part and an arc-shaped part, one end of the connecting part is connected with the top face, the other end of the connecting part is connected with the arc-shaped part, the top face, the connecting part and the arc-shaped part define a mounting groove with an opening located in one side of the third side face, and the orthographic projection area of the arc-shaped part on the top face is smaller than the area of the top face. One end of the mounting key is connected with the fourth side. When the corner key of the embodiment is adopted by the photovoltaic module, only the corner key structure needs to be changed, the frame structure does not need to be changed, one corresponding frame is removed according to different installation modes, compared with the prior art, the structure change is small, the changed corner key can be used in cooperation with an existing frame, operation is convenient, the A-face-free effect is achieved, and meanwhile certain cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a corner key and a photovoltaic module. Background Technology

[0002] Currently, the A-side (top surface) of photovoltaic modules suffers from severe dust accumulation after long-term use, especially in cases of small tilt angles (roof installation) and in dry, low-rain environments. When photovoltaic modules are installed in power stations or on rooftops or other environments with small tilt angles, a large amount of dust accumulates on the A-side of the frame, obscuring the solar cells and causing hot spot problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects in the prior art and provide a corner key and a photovoltaic module.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A corner bond, comprising:

[0006] The main body includes a first side, a second side, a third side, and a fourth side connected in sequence, as well as a top surface and a bottom surface arranged opposite to each other;

[0007] The card plate includes a connecting part and an arc-shaped part. One end of the connecting part is connected to the top surface, and the other end is connected to the arc-shaped part. The top surface, the connecting part, and the arc-shaped part form a mounting groove with an opening located on one side of the third side surface. The orthographic projection area of ​​the arc-shaped part on the top surface is smaller than the area of ​​the top surface.

[0008] The mounting key is connected at one end to the fourth side.

[0009] Preferably, the main body is hollowed out from the top surface to the bottom surface.

[0010] Preferably, the other end of the mounting key is chamfered.

[0011] A photovoltaic module, comprising the aforementioned corner bond, further comprising:

[0012] Photovoltaic support system;

[0013] A laminate is installed at an angle on the photovoltaic bracket. The laminate includes a first short side, a first long side, a second short side, and a second long side connected in sequence. The second short side is located at the lowest position of the entire photovoltaic module.

[0014] The first short frame is installed on the first short side;

[0015] The first long frame is installed on the first long side;

[0016] The second long frame is installed on the second long side;

[0017] The number of corner keys is two. One corner key is installed at the connection between the second short side and the first long side, the laminate is installed in the mounting groove, and the mounting key is inserted into the first long side; the other corner key is installed at the connection between the second short side and the second long side, the laminate is installed in the mounting groove, and the mounting key is inserted into the second long side.

[0018] Preferably, the second short side is encapsulated with a high water-resistant sealing material, and / or the mounting groove is filled with sealant.

[0019] Preferably, the height of the upper surface of the arc-shaped portion is the same as the height of the first long frame and the height of the second long frame.

[0020] A photovoltaic module, comprising the aforementioned corner bond, further comprising:

[0021] Photovoltaic support system;

[0022] A laminate is installed at an angle on the photovoltaic bracket. The laminate includes a first short side, a first long side, a second short side, and a second long side connected in sequence. The second long side is located at the lowest position of the entire photovoltaic module.

[0023] The first short frame is installed on the first short side;

[0024] The first long frame is installed on the first long side;

[0025] The second short frame is installed on the second short long side;

[0026] The number of corner keys is two. One corner key is installed at the connection between the second long side and the first short side, the laminate is installed in the mounting groove, and the mounting key is inserted into the first short side; the other corner key is installed at the connection between the second long side and the second short side, the laminate is installed in the mounting groove, and the mounting key is inserted into the second short side.

[0027] Preferably, the second long side is encapsulated with a high water-resistant sealing material, and / or the mounting groove is filled with sealant.

[0028] Preferably, the height of the upper surface of the arc-shaped portion is the same as the height of the first short frame and the height of the second short frame.

[0029] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0030] The positive and progressive effects of this utility model are as follows: When photovoltaic modules adopt the corner key of this utility model, only the corner key structure needs to be modified, without modifying the frame structure. For different installation methods, one corresponding frame can be removed. In comparison, the structural modification is less, and the modified corner key can be used with the existing frame, which is convenient to operate, achieves the effect of no A-side, and saves certain costs.

[0031] The corner key installation of this invention is quite flexible and can be applied to components with different installation methods. If the long side of the component is parallel to the mounting bracket, one long frame is removed, and two corner keys are used to install it with the two short frames; if the short side of the component is parallel to the fixed bracket, one short frame is removed, and two corner keys are used to install it with the two long frames. Finally, the edge of the mounting corner key is positioned at the lowest point of the entire component so that water or dust on the component surface can flow down from the lowest edge, preventing dust or water from obstructing the solar cells. Attached Figure Description

[0032] Figure 1 This is a perspective view of the corner key in Embodiment 1 of this utility model.

[0033] Figure 2 This is a perspective view of the corner key in Embodiment 1 of this utility model.

[0034] Figure 3 This is a top view of the corner key in Embodiment 1 of this utility model.

[0035] Figure 4 This is a rear-view front view of the corner key in Embodiment 1 of this utility model.

[0036] Figure 5 This is a left-side view of the corner key in Embodiment 1 of this utility model.

[0037] Figure 6 This is a right-side view of the corner key in Embodiment 1 of this utility model.

[0038] Figure 7 This is a structural diagram of the photovoltaic module in Embodiment 2 of this utility model.

[0039] Figure 8 This is a front view of the photovoltaic module corner key installation effect in Embodiment 2 of this utility model.

[0040] Figure 9 This is an exploded view of the front installation of the corner key of the photovoltaic module in Embodiment 2 of this utility model.

[0041] Figure 10 This is a diagram showing the effect of the photovoltaic module being installed on the back of Embodiment 2 of this utility model.

[0042] Figure 11 This is an exploded view of the photovoltaic module mounted on the back of Embodiment 2 of this utility model.

[0043] Explanation of reference numerals in the attached figures:

[0044] angle key 1

[0045] Main body 11

[0046] First side view 7

[0047] Second side 101

[0048] Third side 9

[0049] Fourth side 102

[0050] Bottom 8

[0051] Top surface 103

[0052] 12 pallets

[0053] Arc-shaped part 6

[0054] Connecting part 122

[0055] Laminated component 2

[0056] Second shorter side 21

[0057] First short bezel 3

[0058] First long border 4

[0059] Second longest border 104

[0060] Photovoltaic bracket 5

[0061] Install button 10 Detailed Implementation

[0062] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0063] It should be noted that in the claims and specification of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0064] Example 1

[0065] like Figures 1-6 As shown, this embodiment discloses a corner key 1, which includes a main body 11, a retaining plate 12, and a mounting key 10.

[0066] The main body 11 includes a first side 7, a second side 101, a third side 9 and a fourth side 102 connected in sequence, as well as a top surface 103 and a bottom surface 8 disposed opposite to each other.

[0067] The card plate 12 includes a connecting part 122 and an arc-shaped part 6. One end of the connecting part 122 is connected to the top surface 103, and the other end is connected to the arc-shaped part 6. The top surface 103, the connecting part 122 and the arc-shaped part 6 form a mounting groove with the opening located on one side of the third side surface 9. The orthographic projection area of ​​the arc-shaped part 6 on the top surface 103 is smaller than the area of ​​the top surface 103.

[0068] One end of the mounting key 10 is connected to the fourth side 102. The mounting key 10 is the same as the conventional corner key 1 and corresponds to the mounting key 10 slot of the existing frame. Therefore, it can be applied to the existing installation technology with less modification to the installation equipment, so as to save costs and facilitate the component frame assembly work.

[0069] Preferably, in this embodiment, the main body 11, the card plate 12, and the mounting key 10 are integrally formed to enhance the overall structural strength.

[0070] When the photovoltaic module adopts corner key 1 in this embodiment, only the structure of corner key 1 needs to be modified, without modifying the frame structure. For different installation methods, one corresponding frame can be removed. In comparison, the structural modification is less, and the modified corner key 1 can be used with the existing frame, which is convenient to operate, achieves the effect of no A-side, and saves certain costs.

[0071] The corner key 1 in this embodiment offers flexible installation and can be applied to components with different installation configurations. If the long side of the component is parallel to the mounting bracket, one long frame is removed, and two corner keys 1 are used to install it with the two short frames. If the short side of the component is parallel to the fixed bracket, one short frame is removed, and two corner keys 1 are used to install it with the two long frames. Finally, the edge of the mounting corner key 1 is positioned at the lowest point of the entire component so that water or dust on the component surface can flow down from the lowest edge, preventing dust or water from obstructing the solar cells.

[0072] Furthermore, the main body 11 of this embodiment is hollowed out from the top surface 103 to the bottom surface 8, which is consistent with the design of the existing corner key 1. When producing this improved corner key 1, the modification of the mold can be reduced, and certain material costs can be saved.

[0073] Furthermore, the other end of the mounting key 10 in this embodiment is provided with a chamfer so that the mounting key 10 can be inserted into the short or long frame.

[0074] Example 2

[0075] like Figures 7-11 As shown, this embodiment provides a photovoltaic module suitable for small tilt angles (15°). Its short side is parallel to the fixed support, so one short frame is removed, and two corner keys 1 from the aforementioned embodiment 1 are used to connect it to the two long frames. The photovoltaic module also includes a photovoltaic support 5, a laminate 2, a first short frame 3, a first long frame 4, and a second long frame 104.

[0076] The photovoltaic bracket 5 is a conventional bracket or roof mounting device with a small tilt angle. At this small tilt angle, dust is more likely to accumulate on the surface of the module, which can cause hot spot problems. The corner key 1 in embodiment 1 can avoid this problem. The laminate 2 is installed at an angle on the photovoltaic bracket 5. The laminate 2 includes a first short side, a first long side, a second short side 21, and a second long side connected in sequence. The second short side 21 is located at the lowest position of the entire photovoltaic module.

[0077] The first short frame 3 is installed on the first short side, the first long frame 4 is installed on the first long side, and the second long frame 104 is installed on the second long side. Both the short and long frames are derived from conventional frames. Since the frames are not modified in any way to accommodate existing installation techniques, minimal changes are required to the installation equipment, thus saving certain costs.

[0078] There are two corner keys 1. One corner key 1 is installed at the connection between the second short side 21 and the first long side frame 4, the laminate 2 is installed in the mounting groove, and the mounting key 10 is inserted into the first long side frame 4. The other corner key 1 is installed at the connection between the second short side 21 and the second long side frame 104, the laminate 2 is installed in the mounting groove, and the mounting key 10 is inserted into the second long side frame 104.

[0079] The projected area of ​​the arc-shaped part 6 of corner key 1 on the top surface 103 is smaller than the area of ​​the top surface 103. Therefore, the arc-shaped A-side of corner key 1 (the upper surface of the arc-shaped part 6 of corner key 1) does not obstruct the battery cell. Its length design can be adjusted according to the component template, and can be appropriately shortened or lengthened (the length of a single improved corner key 1 arc-shaped A-side ranges from about 5-20cm).

[0080] In this embodiment, the laminate 2 is installed in the mounting groove, which can prevent the laminate 2 from sliding down along the long frame direction, but at the same time, it brings the risk of dust accumulation at the corners of the component. Therefore, the part of the clamping plate 12 pressing on the upper end of the laminate 2 is set as an arc-shaped part 6. The upper surface of the arc-shaped part 6 has good water-conducting performance. Using the arc-shaped design as a water-conducting surface can prevent dust accumulation at the corners of the component, and the effect is more obvious under the action of rainwater rinsing. At the same time, it also has a reinforcing effect on the laminate 2. Finally, the corner key 1 is installed at the lowest position of the entire component (the second short frame in this embodiment), so that when water or dust accumulates on the surface of the component, it can flow down from the lowest edge, so as to avoid the dust or water from blocking the battery cells.

[0081] When the photovoltaic module of this embodiment is installed in a low-angle environment such as a power station or roof, it can avoid the accumulation of a large amount of dust on the A side of the frame, which would block the solar cells and cause hot spot problems.

[0082] Furthermore, in this embodiment, since the second short side 21 has no frame, a high water-resistant sealing material, preferably butyl tape, is used to seal the second short side 21 to compensate for the sealing problem caused by the lack of a frame.

[0083] The height of the upper surface of the arc-shaped part 6 is the same as the height of the first long frame 4 and the second long frame 104. That is, the arc A surface of the corner key 1 (the upper surface of the arc-shaped part 6 of the card plate 12) is at the same height as the two long frame A surfaces (upper surface, top surface 103), which ensures the sealing of the two long frames at the corner key 1 while maintaining the consistency of appearance.

[0084] To further improve the stability of the connection between the laminate 2 and the corner key 1, sealant is also filled into the mounting groove.

[0085] Example 3

[0086] The difference between the photovoltaic module in this embodiment and that in Embodiment 2 is as follows:

[0087] In this embodiment, the long side of the photovoltaic module is parallel to the fixed bracket, so one long frame is removed and the two short frames are connected by two corner keys from the aforementioned embodiment 1.

[0088] Correspondingly, in this embodiment, the second long side of the photovoltaic module is located at the lowest position of the entire photovoltaic module. The first short frame is installed on the first short side, the first long frame is installed on the first long side, and the second short frame is installed on the second short-long side.

[0089] There are two corner keys. One corner key is installed at the connection between the second long side and the first short side, the laminate is installed in the mounting groove, and the mounting key is inserted into the first short side. The other corner key is installed at the connection between the second long side and the second short side, the laminate is installed in the mounting groove, and the mounting key is inserted into the second short side.

[0090] Its second long side is sealed with butyl tape, and the height of the upper surface of the arc-shaped part is the same as the height of the first short side and the height of the second short side.

[0091] Everything else is the same as in Example 2, and will not be repeated here.

[0092] When the photovoltaic module of this embodiment is installed in a low-angle environment such as a power station or roof, it can avoid the accumulation of a large amount of dust on the A side of the frame, which would block the solar cells and cause hot spot problems.

Claims

1. A corner key, characterized in that, include: The main body includes a first side, a second side, a third side, and a fourth side connected in sequence, as well as a top surface and a bottom surface arranged opposite to each other; The card plate includes a connecting part and an arc-shaped part. One end of the connecting part is connected to the top surface, and the other end is connected to the arc-shaped part. The top surface, the connecting part, and the arc-shaped part form a mounting groove with an opening located on one side of the third side surface. The orthographic projection area of ​​the arc-shaped part on the top surface is smaller than the area of ​​the top surface. The mounting key is connected at one end to the fourth side.

2. The corner key as described in claim 1, characterized in that, The main body is hollowed out from the top surface to the bottom surface.

3. The corner key as described in claim 1, characterized in that, The other end of the installation key is chamfered.

4. A photovoltaic module, characterized in that, Including the corner key as described in any one of claims 1-3, it further includes: Photovoltaic support system; A laminate is installed at an angle on the photovoltaic bracket. The laminate includes a first short side, a first long side, a second short side, and a second long side connected in sequence. The second short side is located at the lowest position of the entire photovoltaic module. The first short frame is installed on the first short side; The first long frame is installed on the first long side; The second long frame is installed on the second long side; The number of corner keys is two. One corner key is installed at the connection between the second short side and the first long side, the laminate is installed in the mounting groove, and the mounting key is inserted into the first long side; the other corner key is installed at the connection between the second short side and the second long side, the laminate is installed in the mounting groove, and the mounting key is inserted into the second long side.

5. The photovoltaic module as described in claim 4, characterized in that, The second short side is encapsulated with a high water-resistant sealing material, and / or the mounting groove is filled with sealant.

6. The photovoltaic module as described in claim 4, characterized in that, The height of the upper surface of the arc-shaped portion is the same as the height of the first long frame and the height of the second long frame.

7. A photovoltaic module, characterized in that, Including the corner key as described in any one of claims 1-3, it further includes: Photovoltaic support system; A laminate is installed at an angle on the photovoltaic bracket. The laminate includes a first short side, a first long side, a second short side, and a second long side connected in sequence. The second long side is located at the lowest position of the entire photovoltaic module. The first short frame is installed on the first short side; The first long frame is installed on the first long side; The second short frame is installed on the second short long side; The number of corner keys is two. One corner key is installed at the connection between the second long side and the first short side, the laminate is installed in the mounting groove, and the mounting key is inserted into the first short side; the other corner key is installed at the connection between the second long side and the second short side, the laminate is installed in the mounting groove, and the mounting key is inserted into the second short side.

8. The photovoltaic module as described in claim 7, characterized in that, The second long side is encapsulated with a high water-resistant sealing material, and / or the mounting groove is filled with sealant.

9. The photovoltaic module as described in claim 7, characterized in that, The height of the upper surface of the arc-shaped portion is the same as the height of the first short frame and the height of the second short frame.

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