Photovoltaic module connection device and photovoltaic system

Abstract

A photovoltaic module connection device and a photovoltaic system are disclosed. The photovoltaic module connection device is used to connect adjacent first photovoltaic modules and second photovoltaic modules, and includes a connector and a locking fastener. The connector includes a first pressing part and a second pressing part. The locking fastener connects the first pressing part and the second pressing part and is used to make the first pressing part abut against the upper end face of the frame of the first photovoltaic module and the frame of the second photovoltaic module, and the second pressing part abut against the lower end face of the frame of the first photovoltaic module and the frame of the second photovoltaic module. The second pressing part has a first hook and a second hook on one edge facing the first pressing part. The first hook is used to hook the bottom of the frame of the first photovoltaic module, and the second hook is used to hook the bottom of the frame of the second photovoltaic module. By setting the first hook and the second hook, this application can first snap the frame of the first photovoltaic module and the frame of the second photovoltaic module into the connector before installation, and then lock the first pressing part and the second pressing part with the locking fastener to ensure that the first photovoltaic module and the second photovoltaic module are connected flat.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and more particularly to a photovoltaic module connection device and a photovoltaic system. Background Technology

[0002] A photovoltaic array is composed of many photovoltaic modules of the same model connected together. In actual installation, installation errors are prone to occur, resulting in uneven edges of adjacent photovoltaic modules. Alternatively, when a cleaning robot cleans the photovoltaic array, the weight of the cleaning robot can cause significant bending deformation at both ends of the photovoltaic modules, resulting in uneven edges of adjacent photovoltaic modules. This makes the photovoltaic modules highly susceptible to deformation and tearing, affecting their service life.

[0003] Therefore, how to improve the technical defects existing in the prior art has always been a problem that ordinary people skilled in the art need to solve. Utility Model Content

[0004] The purpose of this application is to provide a photovoltaic module connection device and a photovoltaic system that is easy and quick to install, compatible with the structure of different photovoltaic modules, and realizes the connection between photovoltaic modules; at the same time, it can also improve the problem of uneven edges of adjacent photovoltaic modules caused by installation errors or bending deformation of the edges of photovoltaic modules, making the photovoltaic modules on the same array more neat and flat.

[0005] The technical solution provided by this utility model is as follows:

[0006] A photovoltaic module connection device for connecting adjacent first and second photovoltaic modules, comprising:

[0007] Connectors and locking fasteners;

[0008] The connector includes a first pressing part and a second pressing part disposed opposite to each other. The fastener connects the first pressing part and the second pressing part and is used to make the first pressing part abut against the upper end face of the first photovoltaic module frame and the upper end face of the second photovoltaic module frame, and the second pressing part abut against the lower end face of the first photovoltaic module frame and the lower end face of the second photovoltaic module frame.

[0009] The second pressing part is provided with a first hook and a second hook on one side edge facing the first pressing part. The first hook is used to hook the bottom of the frame of the first photovoltaic module; the second hook is used to hook the bottom of the frame of the second photovoltaic module.

[0010] In some embodiments, the connector further includes a connecting portion that connects the first pressing portion and the second pressing portion, and the first pressing portion, the connecting portion, and the second pressing portion together form a lateral opening for accommodating the frame of the first photovoltaic module and the frame of the second photovoltaic module.

[0011] In some embodiments, the distance between the side of the first pressing part away from the connecting part and the connecting part is less than the distance between the side of the second pressing part away from the connecting part and the connecting part.

[0012] In some embodiments, the second pressing part is provided with the first hook and the second hook on the side edge away from the connecting part, and the first hook and the second hook are spaced apart along a first direction.

[0013] In some embodiments, the first photovoltaic module and the second photovoltaic module are arranged along a first direction, and the openings of the first hook and the second hook are respectively opposite to the connecting portion.

[0014] In some embodiments, both the first photovoltaic module and the second photovoltaic module include a first frame and a second frame. The first frame extends along a first direction, and the second frame extends along a second direction perpendicular to the first direction. The first hook hooks onto the first frame of the first photovoltaic module along the second direction and abuts against the second frame of the first photovoltaic module along the first direction. The second hook hooks onto the first frame of the second photovoltaic module along the second direction and abuts against the second frame of the second photovoltaic module along the first direction.

[0015] In some embodiments, a positioning part is provided between the first hook and the second hook, the positioning part being adapted to be located within the gap between the first photovoltaic module and the second photovoltaic module; and / or, the locking fastener is adapted to be located within the gap between the first photovoltaic module and the second photovoltaic module.

[0016] In some embodiments, the first pressing part has a first locking hole, and the second pressing part has a second locking hole. The first locking hole and the second locking hole are correspondingly arranged, and the locking fastener passes through the first locking hole and the second locking hole to connect the first pressing part and the second pressing part.

[0017] In some embodiments, the locking device includes a bolt and a nut, the bolt passing through the first locking hole and the second locking hole in sequence and then being locked by the nut; and a flat washer and an elastic washer are provided between the second pressing part and the nut.

[0018] This application also provides a photovoltaic system, including:

[0019] A plurality of photovoltaic modules arranged sequentially along a first direction and a photovoltaic module connection device provided in any of the above embodiments, wherein the photovoltaic module connection device connects adjacent photovoltaic modules.

[0020] The technical advantages of this application are as follows:

[0021] In this application, the second pressing part is provided with a first hook and a second hook, which can respectively engage with the bottom of the frame of the first photovoltaic module and the bottom of the frame of the second photovoltaic module, thereby locking the edges of the first photovoltaic module and the second photovoltaic module between the first pressing part and the second pressing part; then the first pressing part and the second pressing part are connected by a fastener, so that the first pressing part and the second pressing part abut against the upper and lower end faces of the frame of the first photovoltaic module and the frame of the second photovoltaic module, which not only realizes the quick connection between the first photovoltaic module and the second photovoltaic module, but also ensures the flatness of the first photovoltaic module and the second photovoltaic module, and improves the undesirable phenomenon of uneven edges of adjacent photovoltaic modules. Attached Figure Description

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a perspective structural view of a photovoltaic module and its connection device provided in one embodiment of the present application;

[0024] Figure 2 This is a three-dimensional structural view of the photovoltaic module connection device provided in one embodiment of the present application in one state;

[0025] Figure 3 This is a three-dimensional structural view of the photovoltaic module connection device provided in one embodiment of the present application in another state;

[0026] Figure 4 This is a perspective structural view of the connector provided in one embodiment of this application;

[0027] Figure 5 This is a partial view of a photovoltaic module and its connection device provided in one embodiment of this application;

[0028] Figure 6 This is a partial perspective view of a photovoltaic module and its connection device provided in one embodiment of this application.

[0029] Explanation of icon numbers:

[0030] 101. First photovoltaic module; 102. Second photovoltaic module; 103. First frame; 104. Second frame;

[0031] 200. Connector; 210. First pressing part; 211. First locking hole; 220. Connecting part; 230. Second pressing part; 231. First hook; 232. Second hook; 233. Positioning part; 234. Second locking hole; 240. Lateral opening;

[0032] 300. Locking fasteners; 310. Bolts; 320. Nuts; 330. Flat washers; 340. Elastic washers. Detailed Implementation

[0033] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0035] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0036] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this application are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the description of the positions of these components changes, these directional indications also change accordingly.

[0039] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Currently, photovoltaic (PV) module connection devices primarily rely on pre-existing holes on the PV module frame for connection and fixation, and are mostly installed in the middle of the PV module, which is not very effective in addressing warping issues at the module edges. Furthermore, due to differences in frame structures among different module manufacturers, current PV module connection devices are difficult to adapt to various frame structures, and installation is neither quick nor convenient.

[0041] For this, see Figure 1 , Figure 2 and Figure 5 This application provides a photovoltaic module connection device for connecting two adjacent photovoltaic modules. It can not only connect photovoltaic modules to each other, but also improve the unevenness of the edges of adjacent photovoltaic modules caused by installation errors or bending deformation of photovoltaic modules, making the photovoltaic modules on the same array more neat and flat.

[0042] For ease of subsequent description, let two adjacent photovoltaic modules be referred to as the first photovoltaic module 101 and the second photovoltaic module 102, respectively. The arrangement direction of the first photovoltaic module 101 and the second photovoltaic module 102 is the first direction, the length or width direction of the first photovoltaic module 101 or the second photovoltaic module 102 perpendicular to the first direction is the second direction, and the height direction of the first photovoltaic module 101 or the second photovoltaic module 102 is the third direction. The first direction, the second direction, and the third direction are all perpendicular to each other. In an example embodiment, the photovoltaic module connection device includes a connector 200 and a locking fastener 300. The connector 200 includes a first pressing part 210 and a second pressing part 230 disposed opposite to each other. The locking fastener 300 connects the first pressing part 210 and the second pressing part 230 and is used to make the first pressing part 210 abut against the upper end surface of the frame of the first photovoltaic module 101 and the upper end surface of the frame of the second photovoltaic module 102, and the second pressing part 230 abut against the lower end surface of the frame of the first photovoltaic module 101 and the lower end surface of the frame of the second photovoltaic module 102. The second pressing part 230 is provided with a first hook 231 and a second hook 232 on one side edge facing the first pressing part 210. The first hook 231 is used to hook the bottom of the frame of the first photovoltaic module 101, and the second hook 232 is used to hook the bottom of the frame of the second photovoltaic module 102.

[0043] This embodiment, by setting a first hook 231 and a second hook 232, can hook the frame of the first photovoltaic module 101 and the frame of the second photovoltaic module 102, thereby realizing the connection between the first photovoltaic module 101 and the second photovoltaic module 102. With the addition of a locking fastener 300, the first pressing part 210 can cooperate with the second pressing part 230 to abut against the upper and lower end faces of the frame of the first photovoltaic module 101 and the second photovoltaic module 102, respectively, ensuring that the first photovoltaic module 101 and the second photovoltaic module 102 are flat. This gives the photovoltaic module cleaning robot better maneuverability, makes installation convenient and quick, and does not rely on existing holes on the photovoltaic module frame, adapting to the connection between various photovoltaic modules and exhibiting high compatibility. Moreover, because the edges of the first photovoltaic module 101 frame and the edges of the second photovoltaic module 102 frame are well clamped between the first pressing part 210 and the second pressing part 230, it can effectively suppress the warping of the photovoltaic module edges or bending deformation caused by the gravity of the cleaning robot, thereby improving the service life of the photovoltaic modules.

[0044] Specifically, see Figure 3 and Figure 4 The connector 200 also includes a connecting portion 220, which is located between the first pressing portion 210 and the second pressing portion 230 and is used to connect the first pressing portion 210 and the second pressing portion 230. The first pressing portion 210, the connecting portion 220 and the second pressing portion 230 together form a lateral opening 240, which is used to accommodate the frame of the first photovoltaic module 101 and the frame of the second photovoltaic module 102.

[0045] On the one hand, the first pressing part 210 and the second pressing part 230 can form a complete workpiece after being connected by the connecting part 220, making it easier for users to find and less likely to lose. On the other hand, the setting of the connecting part 220 is more conducive to improving the stability of the connection between the first photovoltaic module 101 and the second photovoltaic module 102. When the first pressing part 210 and the second pressing part 230 abut against the upper and lower end faces of the frame of the first photovoltaic module 101 and the frame of the second photovoltaic module 102 to limit the up and down sway of the first photovoltaic module 101 and the second photovoltaic module 102, the connecting part 220 can abut against the outer wall of the frame of the first photovoltaic module 101 and the frame of the second photovoltaic module 102 and cooperate with the first hook 231 and the second hook 232 to limit the frame of the first photovoltaic module 101 and the frame of the second photovoltaic module 102 laterally (i.e., in the second direction).

[0046] Specifically, see Figure 5 , Figure 6The first photovoltaic module 101 has a rectangular frame, including two oppositely arranged first frame 103 and two oppositely arranged second frame 104. The first frame 103 extends along the arrangement direction of the first photovoltaic module 101 and the second photovoltaic module 102, i.e., the first direction, while the second frame 104 is perpendicular to the first frame 103, i.e., the second frame 104 extends along the second direction.

[0047] In one example embodiment, see Figures 1 to 6 The second pressing part 230 has a first hook 231 and a second hook 232 on one side edge away from the connecting part 220. The hook openings of the first hook 231 and the second hook 232 are opposite to the connecting part 220, and both the first hook 231 and the second hook 232 extend toward the connecting part 220. At this time, the first hook 231 can hook onto the bottom of the first frame 103 of the first photovoltaic module 101, and the connecting part 220 and the first hook 231 cooperate to restrict the displacement of the first frame 103 of the first photovoltaic module 101 in the second direction, thereby restricting the displacement of the first photovoltaic module 101 in the second direction; the first pressing part 210 and the second pressing part 230 respectively abut against the upper surface and the lower surface of the first frame 103 of the first photovoltaic module 101, thereby restricting the displacement of the first photovoltaic module 101 in the third direction, thereby avoiding the warping and unevenness of the first photovoltaic module 101 along the third direction. At the same time, while the first hook 231 hooks onto the bottom of the first frame 103 of the first photovoltaic module 101 in the second direction, it abuts against the side of the second frame 104 of the first photovoltaic module 101 in the first direction, thereby further restricting the displacement of the first photovoltaic module 101 in the first direction and the second direction.

[0048] Conversely, the second hook 232 can hook onto the bottom of the first frame 103 of the second photovoltaic module 102, and the connecting part 220 and the second hook 232 cooperate to restrict the displacement of the first frame 103 in the second direction, thereby restricting the displacement of the second photovoltaic module 102 in the second direction; the first pressing part 210 and the second pressing part 230 respectively abut against the upper surface and the lower surface of the first frame 103 of the second photovoltaic module 102, thereby restricting the displacement of the second photovoltaic module 102 in the third direction, thereby preventing the second photovoltaic module 101 from warping or becoming uneven in the third direction; at the same time, while the second hook 232 hooks onto the bottom of the first frame 103 of the second photovoltaic module 102 in the second direction, it abuts against the side of the second frame 104 of the second photovoltaic module 102 in the first direction, thereby further restricting the displacement of the second photovoltaic module 102 in the first and second directions. Therefore, as can be seen from the above, by setting the connector 200, the displacement of the photovoltaic module in the second and third directions can be restricted, so that adjacent photovoltaic modules are at the same height. This can effectively prevent unevenness of photovoltaic modules caused by installation errors or pressure from the cleaning robot, thereby reducing or avoiding the deformation of photovoltaic modules and ultimately reducing the risk of damage such as microcracks in photovoltaic modules.

[0049] Furthermore, if there are multiple first hooks 231 and multiple second hooks 232, with multiple first hooks 231 arranged sequentially along the first direction and multiple second hooks 232 arranged sequentially along the first direction, then the two adjacent first hooks 231 and second hooks 232 located in the middle can limit the distance between the first photovoltaic module 101 and the second photovoltaic module 102, thereby limiting the first photovoltaic module 101 and the second photovoltaic module 102 in the axial direction (along the arrangement direction of the first photovoltaic module 101 and the second photovoltaic module 102). That is, the side of the middle first hook 231 closest to the second hook 232 abuts against the sidewall of the second frame 104 of the first photovoltaic module 101 near the second photovoltaic module 102; the side of the middle second hook 232 closest to the first hook 231 abuts against the sidewall of the second frame 104 of the second photovoltaic module 102 near the first photovoltaic module 101, thereby further limiting the displacement of the first photovoltaic module 101 and the second photovoltaic module 102 along the first direction.

[0050] If there is only one first hook 231 and one second hook 232, then the first hook 231 and the second hook 232 are spaced apart along the first direction, and the sides of the first hook 231 and the second hook 232 that are close to each other can respectively abut against the sidewall of the second frame 104 where the first photovoltaic module 101 and the second photovoltaic module 102 are close to each other, thereby limiting the distance between the first photovoltaic module 101 and the second photovoltaic module 102, and thus limiting the first photovoltaic module 101 and the second photovoltaic module 102 in the first direction. The structure is simpler and the cost is lower.

[0051] In a preferred embodiment, the first pressing part 210, the connecting part 220, and the second pressing part 230 are integrally formed by bending a metal sheet. The first hook 231 and the second hook 232 on the second pressing part 230 are also formed by cutting and bending, resulting in a simple and low-cost manufacturing process. After bending the sheet, the connecting part 200, such as the first pressing part 210 and the second pressing part 230, can undergo slight deformation. During installation, the user first hooks 231 and 232 are attached to the first frame 103 of the first photovoltaic module 101 and the second photovoltaic module 102. Then, the first pressing part 210 is appropriately deformed away from the second pressing part 230, so that the frames of the first photovoltaic module 101 and the second photovoltaic module 102 are within the lateral opening 240. Finally, the first pressing part 210 and the second pressing part 230 are locked in place by the locking fastener 300. After the first pressing part 210 is locked and deformed, it abuts against the upper surface of the frame of the first photovoltaic module 101 and the second photovoltaic module 102, thereby achieving a flat connection between the first photovoltaic module 101 and the second photovoltaic module 102, making installation quick and convenient. Furthermore, in this embodiment, the first hooks 231 and 232 are pre-bent into shape. Compared to a structure that leaves a margin for bending at the installation site, this greatly simplifies the installation process, reduces installation costs, saves installation time, and improves installation efficiency.

[0052] Furthermore, Figure 3 and Figure 4 The distance between the side of the first pressing part 210 away from the connecting part 220 and the connecting part 220 is smaller than the distance between the side of the second pressing part 230 away from the connecting part 220 and the connecting part 220. On the one hand, by making the first pressing part 210 narrower, it is easier for users to install the connecting part 220 to the outside of the photovoltaic module frame; on the other hand, it can avoid obstructing the photovoltaic module and prevent damage to the photovoltaic module, thereby affecting the power generation efficiency.

[0053] Furthermore, see Figure 2 , Figure 5 and Figure 6A positioning part 233 is provided between the first hook 231 and the second hook 232. The positioning part 233 is adapted to be located in the gap between the first photovoltaic module 101 and the second photovoltaic module 102. The user can make a preliminary judgment on the approximate installation position of the second pressing part 230 based on the positioning part 233, so as to achieve pre-positioning and improve installation efficiency. The positioning part 233 is preferably formed by cutting and bending, which is simple to form and low in cost.

[0054] Specifically, see Figure 2 and Figure 4 The first pressing part 210 has a first locking hole 211, and the second pressing part 230 has a second locking hole 234. The first locking hole 211 and the second locking hole 234 are respectively arranged 233. The locking fastener 300 passes through the first locking hole 211 and the second locking hole 234 to connect the first pressing part 210 and the second pressing part 230.

[0055] In this embodiment, a smooth connection between the first photovoltaic module 101 and the second photovoltaic module 102 can be achieved by simply locking the first pressing part 210 and the second pressing part 230 on the connecting part 220 with a single locking fastener 300. The structure is simple and the operation is straightforward. Preferably, the locking fastener 300 is located within the gap between the first photovoltaic module 101 and the second photovoltaic module 102, allowing it to avoid obstructing the first and second photovoltaic modules 101 and 102. Simultaneously, it is positioned relatively centrally in the first pressing part 210 and the second pressing part 230 in the first direction, ensuring a stable connection between the two parts.

[0056] As a preferred option, see Figure 2 and Figure 3 The locking device 300 includes a bolt 310 and a nut 320. The bolt 310 passes through the first locking hole 211 and the second locking hole 234 in sequence and is then locked by the nut 320. This effectively eliminates the deformation of the connector 200 (first pressing part 210 and second pressing part 230) during installation, ensuring the flatness of the photovoltaic module and making installation faster and more convenient. A flat washer 330 and an elastic washer 340 are also sequentially provided between the second pressing part 230 and the nut 320. The flat washer 330 can distribute pressure, improve the fit between the nut 320 and the second pressing part 230, and enhance connection stability. The elastic washer 340 can absorb some vibration and impact, preventing the nut 320 from loosening due to long-term operation of the photovoltaic module.

[0057] See Figure 1 This application also provides a photovoltaic system, including a plurality of photovoltaic modules arranged sequentially along a first direction and a photovoltaic module connection device for connecting the plurality of photovoltaic modules, wherein the photovoltaic module connection device is the photovoltaic module connection device provided in any of the above embodiments. Two photovoltaic module connection devices are provided between two adjacent photovoltaic modules.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0059] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A photovoltaic module connection device for connecting adjacent first photovoltaic modules and second photovoltaic modules, characterized in that, include: Connectors and locking fasteners; The connector includes a first pressing part and a second pressing part disposed opposite to each other. The fastener connects the first pressing part and the second pressing part and is used to make the first pressing part abut against the upper end face of the first photovoltaic module frame and the upper end face of the second photovoltaic module frame, and the second pressing part abut against the lower end face of the first photovoltaic module frame and the lower end face of the second photovoltaic module frame. The second pressing part is provided with a first hook and a second hook on one side edge facing the first pressing part. The first hook is used to hook the bottom of the frame of the first photovoltaic module; the second hook is used to hook the bottom of the frame of the second photovoltaic module.

2. The photovoltaic module connection device according to claim 1, characterized in that, The connector further includes a connecting portion that connects the first pressing portion and the second pressing portion. The first pressing portion, the connecting portion, and the second pressing portion together form a lateral opening, which is used to accommodate the frame of the first photovoltaic module and the frame of the second photovoltaic module.

3. The photovoltaic module connection device according to claim 2, characterized in that, The distance between the side of the first pressing part away from the connecting part and the connecting part is less than the distance between the side of the second pressing part away from the connecting part and the connecting part.

4. The photovoltaic module connection device according to claim 2, characterized in that, The second pressing part is provided with the first hook and the second hook on the side edge away from the connecting part, and the first hook and the second hook are spaced apart along the first direction.

5. The photovoltaic module connection device according to claim 4, characterized in that, The first photovoltaic module and the second photovoltaic module are arranged along the first direction, and the openings of the first hook and the second hook are respectively opposite to the connecting part.

6. The photovoltaic module connection device according to claim 5, characterized in that, Both the first photovoltaic module and the second photovoltaic module include a first frame and a second frame. The first frame extends along a first direction, and the second frame extends along a second direction, which is perpendicular to the first direction. The first hook hooks onto the first frame of the first photovoltaic module along the second direction and abuts against the second frame of the first photovoltaic module along the first direction. The second hook hooks onto the first frame of the second photovoltaic module along the second direction and abuts against the second frame of the second photovoltaic module along the first direction.

7. The photovoltaic module connection device according to any one of claims 1-6, characterized in that, A positioning part is provided between the first hook and the second hook, the positioning part being adapted to be located within the gap between the first photovoltaic module and the second photovoltaic module; and / or, the locking fastener is adapted to be located within the gap between the first photovoltaic module and the second photovoltaic module.

8. The photovoltaic module connection device according to claim 7, characterized in that, The first pressing part has a first locking hole, and the second pressing part has a second locking hole. The first locking hole and the second locking hole are provided correspondingly. The locking fastener passes through the first locking hole and the second locking hole to connect the first pressing part and the second pressing part.

9. The photovoltaic module connection device according to claim 8, characterized in that, The locking device includes a bolt and a nut. The bolt passes through the first locking hole and the second locking hole in sequence and is then locked by the nut. A flat washer and an elastic washer are provided between the second pressing part and the nut.

10. A photovoltaic system, characterized in that, include: A plurality of photovoltaic modules arranged sequentially along a first direction and a photovoltaic module connection device as described in any one of claims 1-9, wherein the photovoltaic module connection device connects adjacent photovoltaic modules.

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