Connecting bridge and photovoltaic string

Abstract

The embodiment of the utility model provides a connecting bridge and a photovoltaic string, and relates to the field of photovoltaic cleaning. The connecting bridge comprises a positioning base, a limiting plate and a pressing block, the positioning base wraps the corner of the photovoltaic module, the limiting plate is provided with a connecting part and a pressing part, the pressing part is connected to the connecting part, the connecting part is connected with the positioning base, and the pressing part is matched with the positioning base and wraps and clamps the back face of the corner of the photovoltaic module; the pressing block is provided with a surface pressing part, a side pressing part and an elastic part which are sequentially connected, the elastic part is movably connected with the positioning base, the surface pressing part can make contact with or be separated from the photovoltaic module by adjusting the elastic part, and the limiting plate, the pressing block and the positioning base are jointly matched to be installed on the photovoltaic module. And the problem that the photovoltaic module is damaged due to punching on the photovoltaic module is avoided. The embodiment of the utility model also provides a photovoltaic string which comprises the connecting bridge.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic clean energy, and more specifically, to a connecting bridge and photovoltaic strings. Background Technology

[0002] When working, the photovoltaic cleaning robot moves along the frame of the photovoltaic module. In a real photovoltaic power station, there are many photovoltaic modules, and there are usually gaps between the photovoltaic modules. If the photovoltaic cleaning robot wants to cross the gaps to clean different photovoltaic modules, it must use a bridge to connect the photovoltaic modules at the gaps as its walking track.

[0003] Existing cable trays require drilling holes in the photovoltaic modules during installation to ensure stable installation. Drilling holes can damage the photovoltaic modules and reduce their lifespan. Utility Model Content

[0004] This utility model provides a connecting cable tray and photovoltaic string. The connecting cable tray can be directly connected to the photovoltaic module without drilling holes in the photovoltaic module, and the installation operation is simple and convenient.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a connecting bridge for connecting adjacent and spaced-apart photovoltaic modules. It includes two mounting members respectively disposed at the corners of the frames of adjacent and spaced-apart photovoltaic modules, and a base connector connecting the two mounting members. At least one mounting member includes:

[0007] The positioning base is used to cover the corners of the photovoltaic module frame, and the positioning base is at least in contact with the back of the corners of the photovoltaic module frame;

[0008] The limiting plate has a connecting part and a pressing part. The pressing part is connected to the connecting part and the connecting part is connected to the positioning base. The pressing part is used to cooperate with the positioning base and clamp the back of the corner of the photovoltaic module.

[0009] The pressure block has a front pressure part, a side pressure part and a tensioning part connected in sequence. The tensioning part is movably connected to the positioning base. The front pressure part is used to contact the front of the corner of the photovoltaic module frame, and the side pressure part is used to contact the side of the corner of the photovoltaic module frame. By adjusting the tensioning part, the front pressure part and the side pressure part can be made to contact or separate from the photovoltaic module frame.

[0010] Optionally, the positioning base includes an upper surface contact portion, a lower surface contact portion, and a side contact portion connected in sequence. The upper surface contact portion is used to contact the front of the photovoltaic module frame, the lower surface contact portion is used to contact the back of the photovoltaic module frame, and the side contact portion is used to contact the side of the photovoltaic module frame.

[0011] Optionally, the lower surface contact portion has an extension plate extending in the -Z direction, the connecting portion is movably connected to the extension plate, and the clamping portion is used to cooperate with the lower surface contact portion and clamp onto the back side of the photovoltaic module at the corner.

[0012] Optionally, the connecting part is bolted to the extension plate; the tightening part is bolted to the contact part of the lower surface.

[0013] Optionally, the lower surface contact portion has a first portion and a second portion, the first portion and the second portion are connected to form an L-shape, and the first portion and the second portion correspond to the two adjacent sides of the photovoltaic module frame, respectively; the number of limiting plates includes at least two, and the first portion and the second portion correspond to at least one limiting plate, respectively.

[0014] Optionally, the pressure block has a surface pressure part, a side pressure part, and a tightening part connected in sequence, wherein the surface pressure part and the side pressure part are perpendicularly connected, and the side pressure part and the tightening part are perpendicularly connected;

[0015] The tensioning part includes a horizontal plate that is perpendicularly connected to the side pressure part and a vertical plate that is perpendicularly connected to the horizontal plate. The horizontal plate is spaced apart from the contact part of the lower surface, and the vertical plate is used to abut against the contact part of the lower surface.

[0016] The surface of the pressure plate that meets the frame of the photovoltaic module is provided with anti-slip texture; the surface of the vertical plate that abuts against the lower surface is provided with anti-slip texture.

[0017] Optionally, the base connector includes two rotating parts and a telescopic part. The two rotating parts are respectively disposed on the positioning base at the corner of the adjacent and spaced photovoltaic module frame, and the two ends of the telescopic part are respectively connected to the two rotating parts.

[0018] Optionally, the rotating component includes a rotating shaft and a bushing, the bushing being fixed to the positioning base, and the rotating shaft being rotatably disposed inside the bushing;

[0019] The telescopic component includes a connecting rod and a connecting sleeve. The connecting sleeve has an axial cavity. One end of the connecting rod is housed in the axial cavity and can slide within the axial cavity. The other end of the connecting rod is rotatably connected to a rotating shaft on the corresponding side. The connecting sleeve is rotatably connected to the rotating shaft on the corresponding side.

[0020] Optionally, the connecting sleeve is provided with a limiting groove, and the connecting rod is provided with a limiting pin. The limiting pin is engaged in the limiting groove and can slide along the limiting groove.

[0021] An embodiment of this utility model also provides a photovoltaic string, including multiple photovoltaic modules and the aforementioned connecting bridge, with adjacent photovoltaic modules connected to each other via the connecting bridge.

[0022] The beneficial effects of this utility model embodiment:

[0023] The connecting bridge includes two mounting components located at the corners of adjacent and spaced-apart photovoltaic module frames, and a base connector connecting the two mounting components. At least one mounting component includes a positioning base, a limiting plate, and a clamping block. The positioning base covers the corner of the photovoltaic module frame and is at least in contact with the back of the corner of the photovoltaic module frame to reduce the number of components and facilitate positioning. The limiting plate has a connecting portion and a clamping portion. The clamping portion is connected to the connecting portion, and the connecting portion is connected to the positioning base. The clamping portion cooperates with the positioning base and clamps the photovoltaic module frame. The back of the corner of the photovoltaic module; the pressure block has a front pressure part, a side pressure part and a tightening part connected in sequence. The tightening part is movably connected to the positioning base. The front pressure part is used to contact the front of the corner of the photovoltaic module frame, and the side pressure part is used to contact the side of the corner of the photovoltaic module frame. By adjusting the tightening part, the front pressure part and the side pressure part can be made to contact or separate from the photovoltaic module frame. The limiting plate and the pressure block work together with the positioning base to be installed on the photovoltaic module and the photovoltaic module frame, avoiding the problem of damaging the photovoltaic module by drilling holes in the photovoltaic module and the photovoltaic module frame.

[0024] The photovoltaic string includes a connecting cable tray, which has all the functions of a connecting cable tray. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a first-view schematic diagram of the connecting cable tray provided in an embodiment of the present utility model;

[0027] Figure 2 This is a second-view schematic diagram of the connecting cable tray provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram showing the connecting rod of the connecting cable tray extending out of the connecting sleeve in an embodiment of this utility model;

[0029] Figure 4 This is an axial cross-sectional view of the connecting cable tray provided in an embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the limiting plate provided in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the pressure block provided in an embodiment of this utility model;

[0032] Figure 7 This is a front view of the connecting bridge provided in the embodiments of this utility model applied to a photovoltaic module;

[0033] Figure 8 for Figure 7 A magnified view of a portion of point A in the middle;

[0034] Figure 9 This is a schematic diagram of the connecting bridge provided in the embodiments of this utility model applied to the back of a photovoltaic module;

[0035] Figure 10 for Figure 9 A magnified view of a portion of point B in the middle.

[0036] Icons: 1-Positioning base; 10-Upper surface contact part; 11-Lower surface contact part; 12-Side contact part; 2-Limiting plate; 20-Connecting part; 21-Pressure part; 3-Pressure block; 30-Surface pressure part; 31-Side pressure part; 32-Tightening part; 4-Base connector; 40-Rotating part; 401-Rotating shaft; 402-Busset; 41-Telescopic part; 411-Connecting rod; 4111-Limiting pin; 412-Connecting sleeve; 4121-Axial cavity; 4122-Limiting groove; 5-Photovoltaic module; 50-Photovoltaic module frame. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0042] The terms “comprising,” “including,” or any other variations thereof are intended to cover a 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 limitation, 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 said element.

[0043] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0045] In this embodiment of the invention, a connecting bridge and a photovoltaic string are provided. When the connecting bridge is installed on the photovoltaic module, there is no need to drill holes in the photovoltaic module, thereby avoiding damage to the photovoltaic module. It will be described in detail below.

[0046] Please refer to Figures 1 to 4The connecting cable tray is used to connect adjacent and spaced-apart photovoltaic modules 5. The connecting cable tray includes two mounting members located at the corners of adjacent and spaced-apart photovoltaic module frames 50, and a base connector 4 connecting the two mounting members. At least one mounting member includes a positioning base 1, a limiting plate 2, and a pressure block 3. The positioning base 1 covers the corner of the photovoltaic module frame 50 and is at least in contact with the back of the corner of the photovoltaic module frame 50, facilitating the positioning of the connecting cable tray and reducing the number of components in the entire connecting cable tray. The limiting plate 2 has a connecting portion 20 and a pressing portion 21. The pressing portion 21 is connected to the connecting portion 20, and the connecting portion 20 is connected to the positioning base 1. The pressing portion 21 cooperates with the positioning base 1. The clamping part 21 is sandwiched on the back of the corner of the photovoltaic module 5. During use, the clamping part 21 can be made to contact the back of the photovoltaic module 5 by adjusting the connecting part 20, thereby clamping the positioning base 1 onto the photovoltaic module 5. The clamping block 3 has a face pressing part 30, a side pressing part 31 and a tightening part 32 connected in sequence. The tightening part 32 is movably connected to the positioning base 1. The face pressing part 30 is in contact with the front of the corner of the photovoltaic module frame 50, and the side pressing part 31 is in contact with the side of the corner of the photovoltaic module frame 50. By adjusting the tightening part 32, the face pressing part 30 and the side pressing part 31 can be made to contact or separate from the photovoltaic module frame 50. The limiting plate 2 and the clamping block 3 work together with the positioning base 1 to be installed on the photovoltaic module 5, avoiding the problem of damaging the photovoltaic module 5 by drilling holes in it.

[0047] In this embodiment, the positioning base 1 is U-shaped, comprising an upper surface contact portion 10, a lower surface contact portion 11, and a side contact portion 12 connected in sequence. The upper surface contact portion 10, the lower surface contact portion 11, and the side contact portion 12 together form a U-shaped groove, and the corner of the photovoltaic module frame 50 is fitted into the U-shaped groove. The inner wall of the upper surface contact portion 10 covers the front of the photovoltaic module frame 50, the inner wall of the lower surface contact portion 11 covers the back of the photovoltaic module frame 50, and the inner wall of the side contact portion 12 covers the side of the photovoltaic module frame 50, so that the positioning base 1 covers the corner of the photovoltaic module frame 50; the inner wall here refers to the side wall closest to the U-shaped groove.

[0048] It is worth mentioning that the front side of the photovoltaic module 5 and the photovoltaic module frame 50 refers to the side that receives sunlight, the back side refers to the side that is not exposed to sunlight, and the side surface of the photovoltaic module 5 and the photovoltaic module frame 50 refers to the wall surface that transitions between the front and back sides. The photovoltaic module frame 50 covers the sides of the photovoltaic module 5 to protect it. At the point where the photovoltaic module frame 50 meets the front side of the photovoltaic module 5, it is higher than the plane of the front side of the photovoltaic module 5; at the point where the photovoltaic module frame 50 meets the back side of the photovoltaic module 5, it is higher than the plane of the back side of the photovoltaic module 5.

[0049] refer to Figure 5 The limiting plate 2 has a connecting part 20 and a pressing part 21. Both the pressing part 21 and the connecting part 20 are flat plates. The pressing part 21 and the connecting part 20 can be integrally formed to form an L-shape.

[0050] The lower surface contact portion 11 has an extension plate extending in the -Z direction, and the connecting portion 20 is connected to the extension plate by bolts. The clamping portion 21 is located above the lower surface contact portion 11 and below the upper surface contact portion 10, and the surface of the clamping portion 21 is parallel to the upper surface contact portion 10. The clamping portion 21 cooperates with the lower surface contact portion 11 and clamps the back of the photovoltaic module 5. When in contact with the photovoltaic module 5, the surface of the clamping portion 21 is in contact with the back surface of the photovoltaic module 5, and the sidewall of the clamping portion 21 abuts against the inner sidewall of the photovoltaic module frame 50. Tightening or loosening the bolts on the connecting portion 20 can achieve the clamping tightness or loosening of the limiting plate 2 and the photovoltaic module frame 50.

[0051] The lower surface contact portion 11 has a first portion and a second portion, which are integrally formed to form an L-shape. The first portion and the second portion correspond to the adjacent two sides of the photovoltaic module frame 50, respectively. The first portion and the second portion provide connection positions for the limiting plate 2 in the X and Y directions, thereby allowing the limiting plate 2 to limit the photovoltaic module 5 in the X and Y directions. The number of limiting plates 2 is at least two, with the first portion and the second portion each corresponding to at least one limiting plate 2.

[0052] refer to Figure 6 The pressure block 3 has a surface pressure part 30, a side pressure part 31, and a tightening part 32 connected in sequence. The surface pressure part 30 and the side pressure part 31 are vertically connected and form an L-shape. The tightening part 32 includes a horizontal plate and a vertical plate. The horizontal plate is perpendicularly connected to the side pressure part 31, and the vertical plate is perpendicularly connected to the horizontal plate. The vertical plate and the horizontal plate are connected in an L-shape. The horizontal plate is spaced apart from the lower surface contact part 11, and the side of the vertical plate abuts against the lower surface contact part 11. A through hole is also provided on the horizontal plate. Of course, the surface pressure part 30, the side pressure part 31, and the tightening part 32 can be integrally formed. The surface pressing part 30 presses against the front of the photovoltaic module frame 50, the side pressing part 31 abuts against the outer side wall of the photovoltaic module frame 50, and the bolts pass through the holes and the contact part 11 on the lower surface in sequence to realize the connection between the tightening part 32 and the positioning base 1. By turning the bolts on the tightening part 32, the clamping force between the surface pressing part 30 and the front of the photovoltaic module frame 50 can be adjusted, thereby realizing the installation, fixing and loosening / disassembly.

[0053] In this embodiment, the face pressing part 30 is in contact with the front side of the photovoltaic module frame 50, thus avoiding damage to the photovoltaic module 50 during clamping. The side pressing part 31 abuts against the outer wall of the photovoltaic module frame 50. Since the bolt on the tightening part 32 passes through the lower surface contact part 11, in order to make the distance between the side pressing part 31 and the photovoltaic module frame 50 adjustable, the through hole through which the bolt passes through the lower surface contact part 11 is a strip hole, which facilitates the movement of the bolt in the strip hole to adjust the distance between the side pressing part 31 and the photovoltaic module frame 50.

[0054] To provide a more intuitive understanding, the positioning base 1, limiting plate 2, and pressure block 3 are positioned and oriented in a three-dimensional Cartesian coordinate system, as shown in the reference. Figures 7 to 10 and combined Figure 1 .

[0055] The thickness direction of the photovoltaic module 5 is the Z-coordinate direction, the length direction is the Y-coordinate direction, and the width direction is the X-coordinate direction. When the positioning base 1 is installed at the corner of the photovoltaic module 5, the upper surface contact part 10 and the lower surface contact part 11 are parallel vertically in the Z-coordinate direction; the direction of the clamping force applied by the surface pressing part 30 of the pressure block 3 is also along the Z-coordinate direction, thereby fixing the connecting bridge to the photovoltaic module 5 and the photovoltaic module frame 50 in the Z-coordinate direction. There are two limiting plates 2, one of which has its pressing part 21 facing the -X-coordinate direction, and the other has its pressing part 21 facing the Y-coordinate direction. When the bolts on the connecting part 20 are tightened, the two limiting plates 2 move in the X and Y directions respectively and press against the inner sidewall of the photovoltaic module frame 50, thereby fixing the connecting bridge to the photovoltaic module frame 50 in the X and Y directions.

[0056] Optionally, the surface of the pressure part 30 that contacts the photovoltaic module frame 50 is provided with anti-slip texture to increase the friction between the two and prevent slippage during connection. The form of the anti-slip texture is not limited here; the shape of the texture can be striped, dotted, or any other type. Similarly, the surface of the vertical plate of the tensioning part 32 that contacts the lower surface contact part 11 is also provided with anti-slip texture to increase the friction between the two and prevent slippage between the tensioning part 32 and the lower surface contact part 11.

[0057] When the cleaning robot finishes cleaning one photovoltaic module 5, it needs to move to another photovoltaic module 5. It can be moved to the other photovoltaic module 5 through the positioning base 1 and the base connector 4.

[0058] Refer again Figure 1 The base connector 4 includes two rotating parts 40 and a telescopic part 41. The two rotating parts 40 are respectively disposed on the positioning base 1 at the corner of the adjacent and spaced photovoltaic module frame 50. The two ends of the telescopic part 41 are respectively connected to the rotating parts 40.

[0059] The rotating component 40 includes a rotating shaft 401 and a bushing 402. The bushing 402 is fixed to the inner wall of the side contact portion 12 of the positioning base 1. The rotating shaft 401 is rotatably disposed inside the bushing 402 and can rotate 360° inside the bushing 402.

[0060] The telescopic component 41 includes a connecting rod 411 and a connecting sleeve 412. An axial cavity 4121 is formed inside the connecting sleeve 412, extending through both ends of the connecting sleeve 412. One end of the connecting rod 411 is housed within the axial cavity 4121 and can slide within it. The other end of the connecting rod 411 is rotatably connected to a rotating shaft 401 via a pin. One end of the connecting sleeve 412 is fitted over the connecting rod 411, and the other end is rotatably connected to the corresponding rotating shaft 401 via a pin.

[0061] To prevent the connecting rod 411 from slipping off the connecting sleeve 412, a limiting groove 4122 is provided on the connecting sleeve 412. The limiting groove 4122 is opened on the side wall of the connecting sleeve 412 and along the axial direction of the connecting sleeve 412. A limiting pin 4111 is provided on the connecting rod 411. The limiting pin 4111 is engaged with the limiting groove 4122 and can slide along the limiting groove 4122. The limiting pin 4111 avoids the risk of the connecting rod 411 slipping off the connecting sleeve 412 on the one hand, and limits the maximum distance that the connecting rod 411 can move within the connecting sleeve 412 on the other hand.

[0062] The ends of the connecting rod 411 and the connecting sleeve 412 can rotate around the corresponding pins on their respective sides, so that the connecting bridge can automatically adjust its angle and length according to the changes in the height and angle of the photovoltaic module 5 within the designed angle and length range, without falling off or getting stuck. This helps to improve the practicality and reliability of the connecting bridge and increase the cleaning range of the photovoltaic cleaning robot.

[0063] In this embodiment, the joint cooperation of the rotating shaft 401, bushing 402, connecting rod 411 and connecting sleeve 412 allows two adjacent photovoltaic modules 5 to have multiple degrees of freedom in multiple directions. It is suitable for connecting two adjacent fixed bracket photovoltaic modules 5 with misalignment, height difference and different angles. The installation is simple and reliable. Moreover, it can adaptively follow and adjust the length and angle according to the different foundation settlement of the fixed photovoltaic module 5 and the influence of external forces (gravity, wind) on the photovoltaic bracket and module, without damaging the photovoltaic module 5 and the bracket.

[0064] Of course, the angle of sunlight will vary with the seasons. In order to improve the power generation efficiency of photovoltaic module 5, there are some photovoltaic brackets with manually adjustable angles in actual situations. The connecting bridge in this embodiment can achieve multiple degrees of freedom and is suitable for connecting two adjacent photovoltaic modules 5 with manually adjustable angles. When the angles of two adjacent photovoltaic modules 5 are adjusted, the connecting bridge can adaptively follow the angle and length adjustment as the angle of the photovoltaic module 5 is adjusted.

[0065] In this embodiment, the connecting cable tray is clamped onto the photovoltaic module 5, avoiding the need to drill holes in the photovoltaic module 5, making installation and disassembly convenient.

[0066] An embodiment of this utility model also provides a photovoltaic string, including multiple photovoltaic modules 5 and the aforementioned connecting bridge, with adjacent photovoltaic modules 5 connected to each other via the connecting bridge.

[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A connecting bridge for connecting adjacent and spaced apart photovoltaic modules (5), characterized in that The system includes two mounting members located at the corners of adjacent and spaced-apart photovoltaic module frames (50) and a base connector (4) connecting the two mounting members, wherein at least one of the mounting members includes: Positioning base (1), the positioning base (1) is used to cover the corner of the photovoltaic module frame (50), and the positioning base (1) is at least in contact with the back side of the corner of the photovoltaic module frame (50); The limiting plate (2) has a connecting part (20) and a pressing part (21). The pressing part (21) is connected to the connecting part (20). The connecting part (20) is connected to the positioning base (1). The pressing part (21) is used to cooperate with the positioning base (1) and clamp the back side of the photovoltaic module (5) at the corner. The pressure block (3) has a face pressure part (30), a side pressure part (31) and a tensioning part (32) connected in sequence. The tensioning part (32) is movably connected to the positioning base (1). The face pressure part (30) is used to contact the front side of the corner of the photovoltaic module frame (50). The side pressure part (31) is used to contact the side side of the corner of the photovoltaic module frame (50). By adjusting the tensioning part (32), the face pressure part (30) and the side pressure part (31) can be made to contact or separate from the photovoltaic module frame (50).

2. The bridge according to claim 1, characterized in that The positioning base (1) includes an upper surface contact portion (10), a lower surface contact portion (11), and a side contact portion (12) connected in sequence. The upper surface contact portion (10) is used to contact the front of the photovoltaic module frame (50), the lower surface contact portion (11) is used to contact the back of the photovoltaic module frame (50), and the side contact portion (12) is used to contact the side of the photovoltaic module frame (50).

3. The bridge according to claim 2, characterized in that The lower surface contact portion (11) has an extension plate extending in the -Z direction, the connecting portion (20) is movably connected to the extension plate, and the pressing portion (21) is used to cooperate with the lower surface contact portion (11) and clamp the back side of the photovoltaic module (5) at the corner.

4. The bridge according to claim 3, characterized in that The connecting part (20) is bolted to the extension plate; the tightening part (32) is bolted to the lower surface contact part (11).

5. The bridge according to claim 2, wherein The lower surface contact portion (11) has a first portion and a second portion, the first portion and the second portion are connected to form an L-shape, the first portion and the second portion respectively correspond to the two adjacent sides of the photovoltaic module frame (50); the number of limiting plates (2) includes at least two, the first portion and the second portion respectively correspond to at least one of the limiting plates (2).

6. The bridge according to claim 2, wherein The pressure block (3) has a surface pressure part (30), a side pressure part (31) and a tensioning part (32) connected in sequence. The surface pressure part (30) and the side pressure part (31) are perpendicularly connected, and the side pressure part (31) and the tensioning part (32) are perpendicularly connected. The tensioning part (32) includes a horizontal plate that is perpendicularly connected to the side pressing part (31) and a vertical plate that is perpendicularly connected to the horizontal plate. The horizontal plate is spaced apart from the lower surface contact part (11), and the vertical plate is used to abut against the lower surface contact part (11). The surface of the surface pressing part (30) that is in contact with the photovoltaic module frame (50) is provided with anti-slip texture; the surface of the vertical plate that abuts against the lower surface contact part (11) is provided with anti-slip texture.

7. The bridge according to any one of claims 1 to 6, characterized in that The base connector (4) includes two rotating parts (40) and a telescopic part (41). The two rotating parts (40) are respectively disposed on the positioning base (1) at the corner of the adjacent and spaced photovoltaic module frame (50). The two ends of the telescopic part (41) are respectively connected to the two rotating parts (40).

8. The bridge according to claim 7, characterized in that The rotating component (40) includes a rotating shaft (401) and a bushing (402). The bushing (402) is fixed to the positioning base (1), and the rotating shaft (401) is rotatably disposed inside the bushing (402). The telescopic component (41) includes a connecting rod (411) and a connecting sleeve (412). The connecting sleeve (412) has an axial cavity (4121). One end of the connecting rod (411) is housed in the axial cavity (4121) and can slide within the axial cavity (4121). The other end of the connecting rod (411) is rotatably connected to the rotating shaft (401) on the corresponding side. The connecting sleeve (412) is rotatably connected to the rotating shaft (401) on the corresponding side.

9. The bridge according to claim 8, characterized in that The connecting sleeve (412) is provided with a limiting groove (4122), and the connecting rod (411) is provided with a limiting pin (4111). The limiting pin (4111) is engaged in the limiting groove (4122) and can slide along the limiting groove (4122).

10. A photovoltaic string, characterized by include: A plurality of photovoltaic modules (5) and a connecting bridge as described in any one of claims 1 to 9, wherein adjacent photovoltaic modules (5) are connected through the connecting bridge.

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