Photovoltaic module

Abstract

The utility model provides a photovoltaic module. The photovoltaic module comprises a support, a linkage piece, a first transmission piece and a second transmission piece, the plurality of brackets are arranged at intervals; the first transmission parts and the second transmission parts are configured into multiple groups in one-to-one correspondence with the multiple supports, the first transmission parts are movably arranged on the corresponding supports, and the second transmission parts and the first transmission parts are in transmission fit with each other; the linkage pieces connect the second transmission pieces arranged on the two adjacent supports, and photovoltaic panels are arranged on the linkage pieces. The photovoltaic panel linkage control system can realize linkage control of a plurality of photovoltaic panels, can ensure the movement synchronism of each photovoltaic panel, and is simple in structure, low in cost, convenient to install and efficient in control.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic technology, and in particular relates to a photovoltaic module. Background Technology

[0002] During windy weather, photovoltaic (PV) tracking systems will remain in a protective posture to withstand the impact of strong winds, requiring them to bear significant loads. Related technologies employ multi-turn reducers or multiple push rods to achieve PV tracking control. This means that a single PV tracking system uses multiple reducers or push rods. These reducers or push rods provide driving force to the system during normal tracking and provide locking force to withstand strong winds when the system is in a protective state. Common transmission methods for multi-turn reducers and multiple push rods include mechanical linkage and electrical linkage.

[0003] Mechanical linkage involves a motor mounted on one of the rotary reducers or push rods, which powers the remaining rotary reducers or push rods via a drive shaft. Electrical linkage, on the other hand, involves a motor mounted on each rotary reducer or push rod, with a controller simultaneously controlling multiple motors to achieve synchronized operation. Mechanical linkage is less expensive but has more structural components and is more complex to install. Electrical linkage is simpler to install but more expensive, and there is a risk of significant errors in the synchronization of multiple motors. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a photovoltaic module that can achieve coordinated control of multiple photovoltaic panels, with high synchronization, simple structure, and low cost.

[0005] This application proposes a photovoltaic module, which includes a support frame, a linkage component, and a first transmission component and a second transmission component capable of mutual transmission; the support frame is configured to be multiple components spaced apart from each other; the first transmission component and the second transmission component are configured to be multiple sets corresponding to the multiple support frames, the first transmission component is movably mounted on the corresponding support frame, and the second transmission component and the first transmission component are mutually driven and cooperated; the linkage component connects the second transmission components mounted on two adjacent support frames to each other, and a photovoltaic panel is mounted on the linkage component.

[0006] According to the photovoltaic module of this application, since the first transmission component and the second transmission component can drive each other and can drive bidirectionally, and multiple second transmission components can be driven by linkage components, the photovoltaic module of this application can realize flexible linkage control of multiple photovoltaic panels. Only one first transmission component or one second transmission component needs to be provided with driving force or braking force to realize linkage control of multiple photovoltaic panels, which can ensure the synchronicity of the movement of each photovoltaic panel, and has a simple structure, low cost, convenient installation and efficient control.

[0007] According to some embodiments of this application, the photovoltaic module further includes a driving device and a braking element. The driving device is connected to and drives at least one first transmission element; the braking element is disposed on at least one bracket and is used to brake the first transmission element corresponding to the bracket.

[0008] According to some embodiments of this application, the first transmission member is adapted to transmit the power of the drive device to the second transmission member; the second transmission member is adapted to transmit the action of the linkage member to the first transmission member.

[0009] According to some embodiments of this application, the first transmission component is constructed as a worm gear, and the second transmission component is constructed as a worm wheel.

[0010] According to some embodiments of this application, the helix angle of the worm is greater than the equivalent friction angle between the teeth of the worm wheel, or the thread helix angle of the worm is greater than the equivalent friction angle of the worm wheel.

[0011] According to some embodiments of this application, the first transmission component is constructed as a lead screw, and the second transmission component is constructed as a lead screw nut that cooperates with the lead screw.

[0012] According to some embodiments of this application, the braking element is configured as a plurality of components corresponding one-to-one with each of the second transmission components, and the braking element is used to brake the movement of the first transmission component.

[0013] According to some embodiments of this application, the braking component includes a fixed disc and a brake disc, the fixed disc being fixedly mounted on a bracket; the brake disc is connected to a first transmission component, and the brake disc can selectively engage with the fixed disc to restrict the rotation of the brake disc relative to the fixed disc.

[0014] According to some embodiments of this application, the braking component further includes an electromagnetic controller disposed on the fixed disc and optionally engaging the brake disc with the fixed disc.

[0015] According to some embodiments of this application, the driving device is configured as a motor, and the output shaft of the motor is connected to the first transmission member and drives the first transmission member to rotate.

[0016] According to some embodiments of this application, the end of the first transmission member is hinged to the bracket, and the end of the second transmission member is connected to the linkage member; wherein the first transmission member and the second transmission member are sleeved on each other and the distance between the end of the first transmission member and the end of the second transmission member is adjustable.

[0017] According to some embodiments of this application, at least one set of first transmission members and second transmission members are configured as drive cylinders.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 These are schematic diagrams of the structure of a photovoltaic module according to some embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the bracket for setting the drive device according to some embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a bracket for setting a braking element according to some embodiments of this application;

[0023] Figure 4 These are schematic diagrams of the worm gear and worm according to some embodiments of this application;

[0024] Figure 5 These are schematic diagrams of the lead screw and lead screw nut according to some embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the first transmission member and the second transmission member at a first distance according to some embodiments of this application;

[0026] Figure 7 This is a schematic diagram showing the first and second transmission members at a second distance according to some embodiments of this application.

[0027] Figure label:

[0028] 10 bracket; 20 first transmission component; 30 second transmission component; 31 slide groove;

[0029] Linkage component 40; linkage disc 41; linkage shaft 42; drive pin 43;

[0030] Photovoltaic panel 50; drive unit 60; braking component 70. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] The following is for reference. Figures 1-7 A photovoltaic module according to an embodiment of this application is described.

[0033] This application proposes a photovoltaic module, which includes a support frame 10, a linkage 40, and a first transmission member 20 and a second transmission member 30 capable of mutual transmission; the support frame 10 is configured to be multiple and spaced apart from each other; the first transmission member 20 and the second transmission member 30 are configured to be multiple sets corresponding one-to-one with the multiple support frames 10, the first transmission member 20 is movably disposed on the corresponding support frame 10, and the second transmission member 30 is mutually driven and engaged with the first transmission member 20; the linkage 40 connects the second transmission members 30 disposed on two adjacent support frames 10 to each other, and a photovoltaic panel 50 is disposed on the linkage 40.

[0034] According to the photovoltaic module of this application, the first transmission member 20 can move relative to the support 10. The first transmission member 20 and the second transmission member 30 are mutually driven and cooperate with each other. The linkage member 40 is connected to the second transmission member 30 and the photovoltaic panel 50. Through the cooperation of the first transmission member 20, the second transmission member 30 and the linkage member 40, the photovoltaic panel 50 can move relative to the support 10, thereby tracking the sunlight and increasing the power generation. Furthermore, the second transmission members 30 set on two adjacent supports 10 are connected by the linkage member 40, which can realize the synchronous movement of two adjacent second transmission members 30. Then, through the linkage member 40, motion transmission can be realized, so that the photovoltaic panels 50 set on multiple linkage members 40 can move synchronously. Furthermore, the first transmission member 20 and the second transmission member 30 can drive each other. The first transmission member 20 is suitable for transmitting power to the second transmission member 30. The second transmission member 30 is suitable for transmitting power to the first transmission member 20. The first transmission member 20 and the second transmission member 30 can drive bidirectionally without transmission self-locking, which can improve the flexibility of the photovoltaic module structure and improve the linkage effect of the structure.

[0035] According to the photovoltaic module of this application, since the first transmission member 20 and the second transmission member 30 can drive each other and can drive bidirectionally, and multiple second transmission members 30 are driven by linkage member 40, the photovoltaic module of this application can realize flexible linkage control. Only one first transmission member 20 or second transmission member 30 needs to be provided with driving force or braking force to realize the linkage control of multiple photovoltaic panels 50, which can ensure the synchronicity of the movement of each photovoltaic panel 50, and has a simple structure, low cost, convenient installation and efficient control.

[0036] According to some embodiments of this application, the photovoltaic module further includes a driving device 60 and a braking member 70. The driving device 60 is connected to and drives at least one first transmission member 20; the braking member 70 is disposed on at least one bracket 10 and is used to brake the first transmission member 20 corresponding to the bracket 10.

[0037] In this embodiment, as Figure 1 , 2As shown, by setting a drive device 60 to drive the first transmission component 20 to move relative to the bracket 10, and by the transmission action of the second transmission component 30 and the linkage action of the linkage component 40, each photovoltaic panel 50 moves relative to the bracket 10, thereby achieving tracking of sunlight and increasing power generation.

[0038] It should be noted that when photovoltaic modules encounter external load impacts such as strong winds, related technologies often use a self-locking structure to prevent the structure from moving in the opposite direction. However, the self-locking mechanism cannot achieve reverse transmission during the driving process. That is, the power driven by the linkage 40 to the second transmission 30 cannot be transmitted to the first transmission 20. As a result, each bracket 10 needs to be equipped with a motor, and it is not possible to use the linkage 40 to drive multiple photovoltaic panels 50 with one motor.

[0039] Therefore, in existing technologies, a motor is typically installed on each support 10, and multiple motors work together to rotate each linkage 40, thereby driving the corresponding photovoltaic panel 50 to move synchronously. However, the rotation angle, speed, and power of each motor need to be coordinated to achieve synchronous rotation of multiple motors; otherwise, problems such as twisting of the linkage 40 may occur.

[0040] Therefore, by setting a first transmission component 20 and a second transmission component 30 that can transmit power to each other, this application realizes that setting a drive device 60 on a bracket 10 can drive the linkage component 40 between multiple brackets 10, thereby driving each photovoltaic panel 50 to rotate.

[0041] Since the first transmission member 20 and the second transmission member 30 can drive each other, and since the first transmission member 20 can no longer lock the second transmission member 30, the photovoltaic panel 50 will rotate after being subjected to external wind force. In order to meet the braking performance of the photovoltaic panel 50, a braking member 70 is set on each bracket 10 to ensure that the linkage member 40 is not affected by external wind force.

[0042] In some cases, external wind forces can cause sudden changes in driving force, abruptly increasing the resistance of the transmission system. This resistance, superimposed on the positive load, requires the drive unit 60 to output greater torque or power to overcome it. If the power or torque of the drive unit 60 is insufficient, it may lead to overload or even damage to the drive unit 60. However, the first transmission component 20 and the second transmission component 30 of this application can transmit power to each other without self-locking, thus providing support for the drive unit 60. When subjected to strong external wind forces exceeding the load of the drive unit 60, the braking force of the brake component 70 can be used to lock the linkage component 40, thereby reducing load fluctuations in the drive unit 60 and lowering the risk of overload.

[0043] It should be noted that the lack of a self-locking design in the first transmission component 20 and the second transmission component 30 may increase the risk of reverse transmission. In this regard, as... Figure 3 As shown, this embodiment applies braking force by setting a braking component 70. When the drive device 60 stops forward driving, reverse locking is achieved by locking the position of the first transmission component 20, preventing reverse transmission and resisting transmission failure under strong winds. Combined with the linkage effect, it maintains the relative angle between each photovoltaic panel 50 and the support 10, improving the stability of the photovoltaic module and its ability to resist environmental forces such as strong winds. This embodiment, through the synergy of bidirectional transmission and braking locking, can meet the bidirectional transmission requirements while avoiding overload of the drive device 60.

[0044] like Figure 1 As shown, the drive device 60 is mounted on a bracket 10, and the brake member 70 is mounted on a bracket 10. In some embodiments, at least one bracket 10 is spaced between the drive device 60 and the brake member 70.

[0045] According to some embodiments of this application, the first transmission member 20 is constructed as a worm gear, and the second transmission member 30 is constructed as a worm wheel. In this embodiment, as... Figure 4 As shown, the transmission is achieved by setting a combination of worm gears and worms. The structure is simple, easy to install in the limited space on the bracket 10, and the transmission is efficient and stable.

[0046] In some embodiments, the turbine is connected to the linkage 40 by means of bolts, welding, or other methods.

[0047] According to some embodiments of this application, the helix angle of the worm is greater than the equivalent friction angle between the teeth of the worm wheel, or the thread helix angle of the worm is greater than the equivalent friction angle of the worm wheel. In this embodiment, through the above-mentioned arrangement, the worm wheel and the worm do not have mechanical self-locking capability, and the worm wheel can drive the worm in the opposite direction under sufficient torque, realizing bidirectional transmission and improving the degree of freedom in the transmission direction; moreover, it can optimize transmission efficiency, reduce wear, and improve service life.

[0048] According to some embodiments of this application, the brake element 70 is disposed at the end of the worm gear, such as... Figure 4 As shown, the brake element 70 is connected to the end face of the worm and is adapted to brake the worm under the action of friction. After the brake element 70 brakes the worm, the turbine and the worm cannot transmit power to each other, thereby achieving structural locking and resisting external load disturbances such as wind.

[0049] In some embodiments, the braking element 70 includes a static friction disc and a dynamic friction disc. The static friction disc can be fixedly connected to the bracket 10, and the dynamic friction disc can be connected to the worm gear. When braking is required, the static friction disc contacts the dynamic friction disc and brakes the worm gear through friction. Protrusions for increasing friction can be provided on the surfaces of the static friction disc and the dynamic friction disc facing each other. For example, locking teeth spaced apart in the circumferential direction are respectively provided on the surfaces of the static friction disc and the dynamic friction disc facing each other, so as to lock by the engagement of the locking teeth. For example, rough friction surfaces for contacting each other are formed on the surfaces of the static friction disc and the dynamic friction disc facing each other, thereby providing braking force to the worm gear when the static friction disc and the dynamic friction disc are in contact with each other.

[0050] According to some embodiments of this application, the first transmission member 20 is constructed as a lead screw, and the second transmission member 30 is constructed as a lead screw nut that mates with the lead screw. In this embodiment, as... Figure 5 As shown, this embodiment achieves the transmission of rotational and linear motion through the cooperation of a lead screw and a lead screw nut, resulting in a simple and efficient transmission method. Specifically, as... Figure 5 As shown, the linkage 40 includes a linkage shaft 42 and a linkage disc 41 arranged concentrically. A drive pin 43 is provided on the linkage disc 41, and a slide groove 31 is provided on the lead screw nut to cooperate with and connect with the drive pin 43. When the lead screw rotates, the lead screw nut moves along the axial direction of the lead screw and drives the linkage disc 41 to rotate. When the linkage disc 41 rotates, it drives the linkage shaft 42 to rotate synchronously. At the same time, the drive pin 43 moves relative to the slide groove 31 along the extension direction of the slide groove 31.

[0051] In some embodiments, the lead screw is connected to the connecting arm and the linkage 40 by means of bolts or the like.

[0052] According to some embodiments of this application, multiple braking elements 70 are configured to correspond one-to-one with each second transmission element 30, and the braking elements 70 are used to brake the movement of the first transmission element 20. In this embodiment, providing multiple braking elements 70 can improve braking efficiency and enhance the stability of the photovoltaic system under braking conditions, giving it a higher ability to resist strong winds.

[0053] Furthermore, the braking element 70 and the driving device 60 can be controlled by the same controller. When the photovoltaic module is normally tracking the sunlight, the controller controls the driving device 60 to provide power and controls the braking element 70 not to provide braking force; when the photovoltaic module is in a protection state, the controller controls the driving device 60 to stop working and controls the braking element 70 to provide braking force, so as to improve the overall wind resistance of the support structure.

[0054] According to some embodiments of this application, the braking component 70 includes a fixed disc and a brake disc, with the fixed disc fixedly mounted on the bracket 10; the brake disc is connected to the first transmission component 20, and the brake disc can selectively engage with the fixed disc to restrict the rotation of the brake disc relative to the fixed disc. In this embodiment, the braking component 70 achieves a braking effect through the selective engagement of the fixed disc and the brake disc, resulting in a fast braking response speed, a more uniform braking force distribution, and high braking stability. Furthermore, the engagement of the fixed disc and the brake disc facilitates control.

[0055] According to some embodiments of this application, the braking component 70 further includes an electromagnetic controller, which is disposed on the fixed disc and can selectively engage the brake disc with the fixed disc. In this embodiment, the engagement of the brake disc with the fixed disc is controlled by the electromagnetic controller, resulting in a simple and efficient control method.

[0056] Specifically, the electromagnetic controller employs either power-off braking or power-on braking. In the case of power-off braking, when the photovoltaic module is normally tracking sunlight, the electromagnetic controller is energized but does not provide braking force; when the photovoltaic module is in a protected state, the electromagnetic controller is de-energized and provides braking force. In the case of power-on braking, when the photovoltaic module is normally tracking sunlight, the electromagnetic controller is de-energized but does not provide braking force; when the photovoltaic module is in a protected state, the electromagnetic controller is energized and provides braking force. This embodiment, through the connection between the electromagnetic control fixed disc and the braking disc, enables synchronous control of multiple braking discs and fixed disc combinations, simplifying the control process and improving the synchronization of photovoltaic module control.

[0057] In some embodiments, the electromagnetic controller is disposed at the end of the worm or lead screw and can be connected to the worm or lead screw via a keyway, bolt, tenon, or other structure.

[0058] Whether it's a turbine, worm gear, or lead screw and lead screw nut used for braking transmission, they can all amplify torque, increase the braking force of the electromagnetic controller, and improve braking efficiency and stability.

[0059] According to some embodiments of this application, the drive device 60 is constructed as a motor, and the output shaft of the motor is connected to the first transmission member 20 and drives the first transmission member 20 to rotate. In this embodiment, the motor drives the first transmission member 20 to rotate relative to the bracket 10, and then drives the photovoltaic panel 50 to rotate relative to the bracket 10 through the second transmission member 30 and the linkage member 40. The motion transmission method is simple and efficient. Furthermore, when the motor stops driving, the mechanical structure of the motor is self-locking, which provides a certain power to the first transmission member 20. Combined with the braking effect of the braking member 70, the overall braking effect of the photovoltaic module can be improved, thereby improving the wind resistance of the photovoltaic module.

[0060] According to some embodiments of this application, the end of the first transmission member 20 is hinged to the bracket 10, and the end of the second transmission member 30 is connected to the linkage member 40; wherein the first transmission member 20 and the second transmission member 30 are sleeved on each other, and the distance between the ends of the first transmission member 20 and the second transmission member 30 is adjustable. In this embodiment, as... Figure 6 , 7 As shown, since one end of the first transmission member 20 and one end of the second transmission member 30 are respectively connected to the bracket 10 and the linkage member 40, the bracket 10 and the linkage member 40 provide a certain constraint. When the distance between the ends of the first transmission member 20 and the second transmission member 30 is adjusted, the angle between the first transmission member 20 and the second transmission member 30 and the bracket 10 will change, thereby driving the linkage member 40 to rotate relative to the bracket 10, and thus realizing the rotation of the photovoltaic panel 50 relative to the bracket 10. In this embodiment, the installation position of the first transmission member 20 and the second transmission member 30 is less restricted, not limited to the limited space at the top of the bracket 10, and can connect the linkage member 40 to any position on the bracket 10. The structural requirements are low, and it is easy to process and install; moreover, the structure has a large volume and good stability.

[0061] Furthermore, the first transmission member 20 or the second transmission member 30 can drive each other. The first transmission member 20 transmits the power applied by the drive device or the power transmitted by the linkage member 40 to the second transmission member 30, causing it to move relative to the first transmission member 20. The second transmission member 30 can also transmit the power applied by the drive device or the power transmitted by the linkage member 40 to the first transmission member 20, causing it to move relative to the second transmission member 30.

[0062] According to some embodiments of this application, at least one set of first transmission components 20 and second transmission components 30 is configured as drive cylinders. In this embodiment, the first transmission components 20 and second transmission components 30 are selected as drive cylinders, which have high driving efficiency, high control precision, and good stability; they can also simplify the processing and production process.

[0063] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0064] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0065] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0066] In the description of this application, "multiple" means two or more.

[0067] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0068] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A photovoltaic module, characterized by, The utility model relates to a photovoltaic power generation system, comprising: a plurality of supports arranged at intervals; a first transmission member and a second transmission member capable of transmitting power to each other, the first transmission member and the second transmission member are configured as a plurality of groups corresponding to the plurality of supports, the first transmission member is movably arranged on the corresponding support, and the first transmission member and the second transmission member are in power transmission cooperation with each other; a linkage member connecting the second transmission members arranged on two adjacent supports to each other, and a photovoltaic panel is arranged on the linkage member.

2. The photovoltaic module of claim 1, wherein, Further comprising: a driving device connected with and driving at least one first transmission member; a brake arranged on at least one support and used for braking the first transmission member corresponding to the support.

3. The photovoltaic module of claim 1, wherein, The first transmission member is configured as a worm, and the second transmission member is configured as a worm gear.

4. The photovoltaic module of claim 3, wherein, The helix angle of the worm is greater than the inter-tooth equivalent friction angle of the worm gear, or the thread angle of the worm is greater than the equivalent friction angle of the worm gear.

5. The photovoltaic module of claim 1, wherein, The first transmission member is configured as a lead screw, and the second transmission member is configured as a lead screw nut matched with the lead screw.

6. The photovoltaic module of claim 2, wherein, The brake is configured as a plurality of brakes corresponding to each second transmission member, and the brake is used for braking the movement of the first transmission member.

7. The photovoltaic module of claim 6, wherein, The brake comprises: a fixed disc fixedly arranged on the support; a brake disc connected with the first transmission member, and the brake disc is selectively engaged with the fixed disc to limit the rotation of the brake disc relative to the fixed disc.

8. The photovoltaic module of claim 7, wherein, The brake further comprises: an electromagnetic controller arranged on the fixed disc and selectively engaging the brake disc with the fixed disc.

9. The photovoltaic module of claim 2, wherein, The driving device is configured as a motor, and an output shaft of the motor is connected with the first transmission member and drives the first transmission member to rotate.

10. The photovoltaic module of claim 1, wherein, An end of the first transmission member is hingedly connected with the support, and an end of the second transmission member is connected with the linkage member; wherein The first transmission member and the second transmission member are sleeved with each other, and the distance between the end of the first transmission member and the end of the second transmission member is adjustable.

11. The photovoltaic module of claim 10, wherein, At least one group of first transmission members and second transmission members is configured as a driving cylinder.

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