Folding photovoltaic panel module

Abstract

A foldable photovoltaic panel module disclosed by the present invention comprises a photovoltaic support, photovoltaic assemblies are hinged to two sides of the bottom of the photovoltaic support, each photovoltaic assembly comprises a plurality of photovoltaic mounting racks, and the plurality of photovoltaic mounting racks are sequentially connected end to end through hinge mechanisms to form a foldable flat plate structure. The photovoltaic mounting frame close to the photovoltaic support is hinged to the bottom of the photovoltaic support and provided with a torsion gear, photovoltaic panels are mounted on the photovoltaic mounting frame, a stepping motor is arranged at the bottom of the photovoltaic support, the output end of the stepping motor is connected with a driving gear, and the driving gear is meshed with the torsion gear. A four-bar mechanism is adopted to achieve unfolding and folding of the photovoltaic panel, a folding mechanism is simple and effective, meanwhile, stepping motor driving and a steel cable winch driving mechanism are jointly used, the torque requirement for the stepping motor is lowered, the overall reliability of the device is improved, and the device is suitable for popularization and application. And the equipment is not easy to damage, long in service life, low in operation and maintenance cost and high in expansibility.

Description

Technical Field

[0001] This invention relates to a foldable photovoltaic panel module, belonging to the field of photovoltaic equipment and facility technology. Background Technology

[0002] Photovoltaic power generation is an important source of new energy. Currently, photovoltaic panels are mainly installed using fixed brackets and floating installation methods. Once installed, they cannot be moved and cannot be used as temporary power sources in scenarios such as rescue, disaster relief, and black start. There is a lack of design solutions for foldable and portable photovoltaic panels.

[0003] Currently, some design schemes exist that can achieve folding and movement of photovoltaic panels. However, those schemes that can achieve fully automatic folding generally suffer from problems such as complex folding mechanisms, a small number of photovoltaic panel folding layers, and low space utilization. For example:

[0004] The invention patent entitled "A Side-Pull Folding Photovoltaic Panel Sliding Control Structure" disclosed in patent application number CN202411804410.1 has a complex folding mechanism and poor expandability.

[0005] The utility model patent entitled "A Solar Panel Folding Device" disclosed in patent application number CN 201920859700.4 uses a "door"-shaped connecting rod to connect two photovoltaic frames together. When folded, it occupies a lot of space and cannot be expanded.

[0006] The invention patent entitled "An Automatic Folding Device for Solar Panels" published by patent application number CN202010450134.9 has a high torque requirement and the equipment is prone to damage because the torque during the unfolding and folding process of the photovoltaic panel is borne by the motor and drive gear.

[0007] The invention patent disclosed in patent application number CN202411466208.2 is entitled "A Foldable Photovoltaic Panel Mechanism", and the folding mechanism is complex and occupies a lot of space when folded.

[0008] The invention patent entitled "A movable foldable photovoltaic panel transport bracket" disclosed in patent application number CN202411566177.8 has a scissor mechanism on only one side that can install photovoltaic panels, and the photovoltaic panels cannot be made completely parallel when unfolded and retracted.

[0009] In existing technologies, photovoltaic panel folding solutions with multiple folding layers and high space utilization generally have low levels of automation and cannot achieve automatic unfolding and folding.

[0010] For example, patent application number CN202021941243.2, entitled "A Movement Support for a Retractable Containerized Photovoltaic Panel", requires manual intervention in the unfolding and retraction process of the photovoltaic panel, resulting in a low degree of automation.

[0011] There is a need to develop a foldable photovoltaic panel module with a simple structure, multiple folded photovoltaic panels, and high space utilization. Summary of the Invention

[0012] The purpose of this invention is to provide a foldable photovoltaic panel module, which has the characteristics of simple structure, multiple folded photovoltaic panel layers, high space utilization and high level of automation.

[0013] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a foldable photovoltaic panel module, including a photovoltaic bracket, photovoltaic modules are hinged to both sides of the bottom of the photovoltaic bracket, the photovoltaic modules include multiple photovoltaic mounting frames, the multiple photovoltaic mounting frames are connected end to end by a hinge mechanism to form a foldable flat plate structure, the folding structure adopts a four-bar linkage to realize the sequential up and down folding and overlapping of the photovoltaic mounting frames, the photovoltaic mounting frames close to the photovoltaic bracket are hinged to the bottom of the photovoltaic bracket and are provided with a torsion gear, photovoltaic panels are installed on each photovoltaic mounting frame, a stepper motor is provided at the bottom of the photovoltaic bracket, the output end of the stepper motor is connected to a drive gear, the drive gear meshes with the torsion gear, the stepper motor, drive gear and torsion gear realize the unfolding and folding of the photovoltaic mounting frame.

[0014] The aforementioned foldable photovoltaic panel module has a photovoltaic support structure that is a quadrilateral frame formed by welding four support trusses together. The quadrilateral is a regular quadrilateral, with a simple structure and qualified strength.

[0015] The aforementioned foldable photovoltaic module includes a guide pulley system at the top of the photovoltaic support frame and a cable winch motor and cable drum at the bottom. The cable winch motor and cable drum are driven and connected. A cable connecting buckle is provided at the end of the photovoltaic mounting frame away from the photovoltaic support frame. One end of the cable is fixed and wound on the cable drum, and the other end of the cable passes through the guide pulley system along the high side and connects to the cable connecting buckle. By combining the stepper motor drive and the cable winch drive mechanism, the photovoltaic mounting frame can be reliably unfolded and retracted. The structure is simple, and the torque requirements of the stepper motor are reduced, thus improving the overall reliability of the device.

[0016] The aforementioned foldable photovoltaic panel module includes a photovoltaic mounting frame comprising longitudinal beams and transverse beams. Two parallel longitudinal beams and two parallel transverse beams are connected to form a quadrilateral structure, which is a regular quadrilateral and is constructed by welding stainless steel.

[0017] In the aforementioned foldable photovoltaic module, both ends of the frame beam are provided with trunnions. The frame beam at the near end of the photovoltaic mounting frame adjacent to the photovoltaic bracket is hinged to the bottom of the photovoltaic bracket through its trunnions, allowing free rotation. The upper surface of the frame beam at the far end of the photovoltaic mounting frame adjacent to the photovoltaic bracket is symmetrically equipped with steel cable connecting buckles on both sides for fixing steel cables.

[0018] The aforementioned foldable photovoltaic panel module includes a hinge mechanism comprising split gears, a hinge bracket, and a hinge strut. Split gears are fixedly installed on the trunnions of the frame beams between two adjacent photovoltaic mounting frames. The two opposing split gears between two adjacent photovoltaic mounting frames mesh with each other. The hinge bracket is Z-shaped, with a through hole at the midpoint of the hinge bracket. Two adjacent trunnions are inserted into the two through holes of the same hinge bracket and can rotate freely. The two ends of the hinge strut are respectively hinged to the ends of two hinge brackets on the same side of the same photovoltaic bracket, allowing free rotation. The hinge strut adjacent to the photovoltaic bracket is connected to the corresponding mounting hole at the bottom of the photovoltaic bracket and can rotate freely.

[0019] In the aforementioned foldable photovoltaic panel module, the bottom of the inner wall of the quadrilateral structure formed by the frame longitudinal beams and frame transverse beams is provided with a retaining edge to facilitate the installation of the photovoltaic panel.

[0020] In the aforementioned foldable photovoltaic module, the inner side of the quadrilateral structure formed by the frame longitudinal beams and frame transverse beams is provided with reinforcing ribs parallel to the frame longitudinal beams, which enhances the structural strength of the photovoltaic support and facilitates the installation of the photovoltaic panels.

[0021] Compared with existing technologies, this invention uses a four-bar linkage consisting of a hinged strut, a hinged bracket, a frame beam, and a photovoltaic bracket to realize the unfolding and folding of photovoltaic panels. Its folding mechanism is simple and effective. Furthermore, the combined use of a stepper motor drive and a steel cable winch drive mechanism enables reliable unfolding and retraction of the photovoltaic mounting frame. The structure is simple, reduces the torque requirements of the stepper motor, improves the overall reliability of the device, makes the equipment less prone to damage, has a long service life, and low maintenance costs. Moreover, the combined use of the folding structure and drive mechanism allows for completely parallel unfolding and retraction, achieving full automation without manual intervention, resulting in a high degree of automation. This invention adopts a modular design, allowing multiple foldable photovoltaic panel modules to be used together, and can also be mounted on vehicles, ships, and other transport equipment, demonstrating high scalability. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the invention when unfolded;

[0024] Figure 3 This is a front view of the photovoltaic support structure of the present invention;

[0025] Figure 4 This is the present invention. Figure 3 Cross-sectional view at point A;

[0026] Figure 5 This is the front view of the invention when unfolded;

[0027] Figure 6 This is the left view of the invention when unfolded;

[0028] Figure 7 This is a schematic diagram of the installation structure of the photovoltaic bracket of the present invention;

[0029] Figure 8 This is a partially enlarged schematic diagram of the guide pulley assembly of the present invention;

[0030] Figure 9 This is a partially enlarged schematic diagram of the stepper motor installation of the present invention;

[0031] Figure 10 This is a side view of the structure of part of the photovoltaic mounting frame of the present invention when unfolded;

[0032] Figure 11 This is an enlarged schematic diagram of the hinge mechanism structure of the present invention.

[0033] Reference numerals: 1. Photovoltaic support frame; 101. Support truss; 102. Guide pulley block; 103. Cable winch; 104. Cable drum; 105. Cable; 106. Stepper motor; 107. Drive gear; 108. Torsion gear; 2. Photovoltaic mounting frame; 201. Frame longitudinal beam; 202. Frame transverse beam; 203. Cable connector; 204. Trunnion; 3. Hinge mechanism; 301. Split gear; 302. Hinge bracket; 303. Hinge support rod.

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0035] Embodiment 1 of the present invention: A foldable photovoltaic panel module includes a photovoltaic support 1, wherein the photovoltaic support 1 is a quadrilateral frame formed by welding four support trusses 101 together. The quadrilateral is a regular quadrilateral, which is easy to install and has high structural strength. Photovoltaic modules are hinged to both sides of the bottom of the photovoltaic support 1.

[0036] The photovoltaic module includes multiple photovoltaic mounting frames 2, which are connected end to end by a hinge mechanism 3 to form a foldable flat plate structure. The folding structure adopts a four-bar linkage to realize the sequential up and down folding and overlapping of the photovoltaic mounting frames 2.

[0037] The photovoltaic mounting frame 2 includes frame longitudinal beams 201 and frame transverse beams 202. Two parallel frame longitudinal beams 201 and two parallel frame transverse beams 202 are connected to form a quadrilateral structure. The quadrilateral is a regular quadrilateral and is welded from stainless steel. The photovoltaic mounting frame 2 near the photovoltaic bracket 1 is hinged to the bottom of the photovoltaic bracket 1 and is equipped with a torsion gear 108. Photovoltaic panels are installed on the photovoltaic mounting frame 2. Both ends of the frame transverse beams 202 are provided with trunnions 204. The frame transverse beams 2 near the photovoltaic bracket 1 are hinged to the bottom of the photovoltaic bracket 1 through their trunnions 204, so as to achieve free rotation.

[0038] A stepper motor 106 is installed at the bottom of the photovoltaic bracket 1. The output end of the stepper motor 106 is connected to a drive gear 107. The drive gear 107 meshes with a torsion gear 108. The stepper motor 106, the drive gear 107, and the torsion gear 108 enable the photovoltaic mounting bracket 2 to unfold and retract.

[0039] The hinge mechanism 3 includes a split gear 301, a hinge bracket 302, and a hinge strut 303. Split gears 301 are fixedly installed on the trunnions 204 of the frame beams 202 between two adjacent photovoltaic mounting frames 2. The two opposing split gears 301 between two adjacent photovoltaic mounting frames 2 mesh with each other. The hinge bracket 302 is Z-shaped, with a through hole at the middle bend. Two adjacent trunnions 204 are inserted into the two through holes of the same hinge bracket 302 and can rotate freely. The two ends of the hinge strut 303 are respectively hinged to the ends of the two hinge brackets 302 at the front and rear ends of the same photovoltaic bracket 1 on the same side and can rotate freely. The hinge strut 303 adjacent to the photovoltaic bracket 1 is connected to the corresponding mounting hole at the bottom of the photovoltaic bracket 1 and can rotate freely.

[0040] In this embodiment, during unfolding, the stepper motor 106 drives the torsion gear 108 to rotate via the drive gear 107. During this process, the frame beam 202 connected to the photovoltaic bracket 1 rotates around the trunnion 204. At the other end of the photovoltaic mounting frame 2, the hinged support rod 303, the hinged bracket 302, the frame beam 201, and the photovoltaic bracket 1 form a four-bar linkage, keeping the hinged bracket 302 vertical during its rotation around the trunnion 204. The adjacent split gears 301 rotate around the hole in the middle of the hinged bracket 302, realizing the unfolding of the adjacent photovoltaic mounting frame 2. In this embodiment, the folding process is opposite to the unfolding process. This allows the photovoltaic mounting frame 2 to be placed parallel to each other in its folded and unfolded states, improving space utilization.

[0041] Embodiment 2 of the present invention: A foldable photovoltaic panel module includes a photovoltaic support 1, wherein the photovoltaic support 1 is a quadrilateral frame formed by welding four support trusses 101 together. The quadrilateral is a regular quadrilateral, which is simple to install and has high structural strength. Photovoltaic modules are hinged to both sides of the bottom of the photovoltaic support 1.

[0042] The photovoltaic module includes multiple photovoltaic mounting frames 2, which are connected end to end by a hinge mechanism 3 to form a foldable flat plate structure. The folding structure adopts a four-bar linkage to realize the sequential up and down folding and overlapping of the photovoltaic mounting frames 2.

[0043] The photovoltaic mounting frame 2 includes frame longitudinal beams 201 and frame transverse beams 202. Two parallel frame longitudinal beams 201 and two parallel frame transverse beams 202 are connected to form a quadrilateral structure. The quadrilateral is a regular quadrilateral and is welded from stainless steel. The photovoltaic mounting frame 2 near the photovoltaic bracket 1 is hinged to the bottom of the photovoltaic bracket 1 and is equipped with a torsion gear 108. Photovoltaic panels are installed on the photovoltaic mounting frame 2. Both ends of the frame transverse beams 202 are provided with trunnions 204. The frame transverse beams 2 near the photovoltaic bracket 1 are hinged to the bottom of the photovoltaic bracket 1 through their trunnions 204, allowing free rotation. The frame transverse beams 2 at the far end of the photovoltaic mounting frame 2 near the photovoltaic bracket 1 are symmetrically installed on both sides of the upper surface of the frame transverse beams 2 for fixing steel cables 105.

[0044] A guide pulley assembly 102 is provided at the top of the photovoltaic bracket 1, and a steel cable winch motor 103 and a steel cable drum 104 are provided at the bottom of the photovoltaic bracket 1. The steel cable winch motor 103 and the steel cable drum 104 are drivenly connected. A steel cable connecting buckle 203 is provided at the end of the photovoltaic mounting frame 2 away from the photovoltaic bracket 1. One end of a steel cable 105 is fixed and wound on the steel cable drum 104. The other end of the steel cable 105 passes through the guide pulley assembly 102 in the high side direction and is connected to the steel cable connecting buckle 203. That is, the steel cable 105 passes through the guide pulley assembly 102 from bottom to top from the steel cable drum 104, and then extends downward along its upper side to the steel cable connecting buckle 203 for fixation.

[0045] The hinge mechanism 3 includes a split gear 301, a hinge bracket 302, and a hinge strut 303. Split gears 301 are fixedly installed on the trunnions 204 of the frame beams 202 between two adjacent photovoltaic mounting frames 2. The two opposing split gears 301 between two adjacent photovoltaic mounting frames 2 mesh with each other. The hinge bracket 302 is Z-shaped, with a through hole at the middle bend. Two adjacent trunnions 204 are inserted into the two through holes of the same hinge bracket 302 and can rotate freely. The two ends of the hinge strut 303 are respectively hinged to the ends of the two hinge brackets 302 at the front and rear ends of the same photovoltaic bracket 1 on the same side and can rotate freely. The hinge strut 303 adjacent to the photovoltaic bracket 1 is connected to the corresponding mounting hole at the bottom of the photovoltaic bracket 1 and can rotate freely.

[0046] In this embodiment, during unfolding, the cable winch 103 controls the cable 105 to loosen, allowing the photovoltaic mounting frame 2 to unfold downwards under its own weight. During this process, the frame beam 202 connected to the photovoltaic bracket 1 rotates around the trunnion 204. At the other end of the photovoltaic mounting frame 2, the hinged support rod 303, the hinged bracket 302, the frame beam 201, and the photovoltaic bracket 1 form a four-bar linkage, keeping the hinged bracket 302 vertical during its rotation around the trunnion 204. Adjacent split gears 301 rotate around the hole in the middle of the hinged bracket 302, enabling the unfolding of adjacent photovoltaic mounting frames 2. In this embodiment, the folding process is opposite to the unfolding process; the cable winch 103 controls the cable 105 to wind and retract the photovoltaic mounting frame 2, and the photovoltaic mounting frame 2 folds and unfolds sequentially. This allows the photovoltaic mounting frame 2 to be placed parallel to its unfolded state, improving space utilization.

[0047] Embodiment 3 of the present invention: A foldable photovoltaic panel module includes a photovoltaic support 1, wherein the photovoltaic support 1 is a quadrilateral frame formed by welding four support trusses 101 together. The quadrilateral is a regular quadrilateral, which is easy to install and has high structural strength. Photovoltaic modules are hinged to both sides of the bottom of the photovoltaic support 1.

[0048] The photovoltaic module includes multiple photovoltaic mounting frames 2, which are connected end to end by a hinge mechanism 3 to form a foldable flat plate structure. The folding structure adopts a four-bar linkage to realize the sequential up and down folding and overlapping of the photovoltaic mounting frames 2.

[0049] The photovoltaic mounting frame 2 includes frame longitudinal beams 201 and frame transverse beams 202. Two parallel frame longitudinal beams 201 and two parallel frame transverse beams 202 are connected to form a quadrilateral structure. The quadrilateral is a regular quadrilateral and is welded from stainless steel. The photovoltaic mounting frame 2 near the photovoltaic bracket 1 is hinged to the bottom of the photovoltaic bracket 1 and is equipped with a torsion gear 108. Photovoltaic panels are installed on the photovoltaic mounting frame 2. Both ends of the frame transverse beams 202 are provided with trunnions 204. The frame transverse beams 2 near the photovoltaic bracket 1 are hinged to the bottom of the photovoltaic bracket 1 through their trunnions 204, allowing free rotation. The frame transverse beams 2 at the far end of the photovoltaic mounting frame 2 near the photovoltaic bracket 1 are symmetrically installed on both sides of the upper surface of the frame transverse beams 2 for fixing steel cables 105.

[0050] A stepper motor 106 is installed at the bottom of the photovoltaic bracket 1. The output end of the stepper motor 106 is connected to a drive gear 107. The drive gear 107 meshes with a torsion gear 108. The stepper motor 106, the drive gear 107, and the torsion gear 108 enable the photovoltaic mounting bracket 2 to unfold and retract.

[0051] The photovoltaic bracket 1 has a guide pulley group 102 at its top and a cable winch motor 103 and a cable drum 104 at its bottom. The cable winch motor 103 and the cable drum 104 are driven and connected. The photovoltaic mounting frame 2 has a cable connecting buckle 203 at its end away from the photovoltaic bracket 1. One end of a steel cable 105 is fixed and wound on the cable drum 104. The other end of the steel cable 105 passes through the guide pulley group 102 in the high side direction and is connected to the cable connecting buckle 203. Through the combined use of the stepper motor 106 and the cable winch 103, the photovoltaic mounting frame 2 can be reliably unfolded and retracted. The structure is simple, and the torque requirement of the stepper motor 106 is reduced, thus improving the overall reliability of the device.

[0052] The hinge mechanism 3 includes a split gear 301, a hinge bracket 302, and a hinge strut 303. Split gears 301 are fixedly installed on the trunnions 204 of the frame beams 202 between two adjacent photovoltaic mounting frames 2. The two opposing split gears 301 between two adjacent photovoltaic mounting frames 2 mesh with each other. The hinge bracket 302 is Z-shaped, with a through hole at the middle bend. Two adjacent trunnions 204 are inserted into the two through holes of the same hinge bracket 302 and can rotate freely. The two ends of the hinge strut 303 are respectively hinged to the ends of the two hinge brackets 302 at the front and rear ends of the same photovoltaic bracket 1 on the same side and can rotate freely. The hinge strut 303 adjacent to the photovoltaic bracket 1 is connected to the corresponding mounting hole at the bottom of the photovoltaic bracket 1 and can rotate freely.

[0053] Specifically, the bottom of the inner wall of the quadrilateral structure formed by the frame longitudinal beam 201 and the frame transverse beam 202 is provided with a retaining edge, and the inner side is also provided with reinforcing ribs parallel to the frame longitudinal beam 201 to enhance the structural strength of the photovoltaic bracket 1 and facilitate the installation of photovoltaic panels.

[0054] During use, for example, when the photovoltaic mounting frame 2 is moved from its retracted state to its extended state, the cable winch 103 controls the cable 105 to loosen, while the stepper motor 106 drives the torsion gear 108 to rotate via the drive gear 107. During this process, the frame beam 202 connected to the photovoltaic bracket 1 rotates around the trunnion 204. At the other end of the photovoltaic mounting frame 2, the hinged support rod 303, the hinged bracket 302, the frame beam 201, and the photovoltaic bracket 1 form a four-bar linkage, keeping the hinged bracket 302 vertical during its rotation around the trunnion 204. Adjacent split gears 301 rotate around the hole in the middle of the hinged bracket 302, enabling the adjacent photovoltaic mounting frame 2 to unfold. The retraction process of the photovoltaic mounting frame 2 is the opposite. This allows for parallel placement of the photovoltaic mounting frame 2 in both retracted and extended states, improving space utilization.

[0055] Since the foldable photovoltaic module contains multiple photovoltaic mounting frames 2, if a single stepper motor 106, drive gear 107, and torsion gear 108 are used to unfold and retract the photovoltaic mounting frames 2, the stepper motor 106, drive gear 107, and torsion gear 108 would have to withstand a large torque, making the equipment prone to damage. If a single cable winch 103 is used to drive the winding and unwinding of the cable 105 to unfold and retract the photovoltaic mounting frames 2, then during the unfolding phase, especially in the initial stage, the self-weight of the photovoltaic mounting frames 2 cannot reliably overcome the friction of the hinge mechanism 3 to achieve reliable unfolding.

[0056] By combining the stepper motor 106 drive and the cable winch 103 drive mechanism, the photovoltaic mounting frame 2 can be reliably deployed and retracted. The structure is simple, and the torque requirements of the stepper motor 106 are reduced, thus improving the overall reliability of the device.

[0057] The working principle of one embodiment of the present invention: When in use, the present invention can control the photovoltaic mounting frames 2 on both sides of the photovoltaic module to expand or retract synchronously, as follows:

[0058] During deployment, the cable winch 103 controls the cable 105 to loosen, while the stepper motor 106 drives the torsion gear 108 to rotate via the drive gear 107. During this process, the frame beam 202 connected to the photovoltaic bracket 1 rotates around the trunnion 204. At the other end of the photovoltaic mounting frame 2, the hinged support rod 303, the hinged bracket 302, the frame beam 201, and the photovoltaic bracket 1 form a four-bar linkage, which keeps the hinged bracket 302 vertical during rotation around the trunnion 204. The adjacent split gears 301 rotate around the hole in the middle of the hinged bracket 302, realizing the deployment of adjacent photovoltaic mounting frames 2. Multiple photovoltaic mounting frames 2 connected end to end are simultaneously deployed to the same plane to complete the deployment operation.

[0059] During the retraction process, the steel cable winch 103 controls the steel cable 105 to wind and retract, while the stepper motor 106 drives the torsion gear 108 to rotate in the opposite direction through the drive gear 107. During this process, the frame beam 202 connected to the photovoltaic bracket 1 rotates around the trunnion 204. At the other end of the photovoltaic mounting frame 2, the hinged support rod 303, the hinged bracket 302, the frame beam 201, and the photovoltaic bracket 1 form a four-bar linkage mechanism, which keeps the hinged bracket 302 vertical during the rotation around the trunnion 204. The adjacent split gears 301 rotate around the hole in the middle of the hinged bracket 302, so that the adjacent photovoltaic mounting frames 2 are folded along the connection. Multiple photovoltaic mounting frames 2 connected end to end are folded and retracted to the side wall of the photovoltaic bracket 1 at the same time, completing the folding action.

Claims

1. A foldable photovoltaic panel module, characterized in that, The system includes a photovoltaic bracket (1), on which photovoltaic modules are hinged on both sides of the bottom. The photovoltaic modules include multiple photovoltaic mounting frames (2). The multiple photovoltaic mounting frames (2) are connected end to end by a hinge mechanism (3) to form a foldable flat plate structure. The photovoltaic mounting frame (2) close to the photovoltaic bracket (1) is hinged to the bottom of the photovoltaic bracket (1) and is provided with a torsion gear (108). Photovoltaic panels are installed on each of the photovoltaic mounting frames (2). A stepper motor (106) is provided at the bottom of the photovoltaic bracket (1). The output end of the stepper motor (106) is connected to a drive gear (107). The drive gear (107) meshes with the torsion gear (108).

2. A foldable photovoltaic panel module according to claim 1, characterized in that, The photovoltaic support (1) is a quadrilateral frame formed by welding four support trusses (101) together.

3. A foldable photovoltaic panel module according to claim 2, characterized in that, The photovoltaic bracket (1) is provided with a guide pulley group (102) at the top and a steel cable winch motor (103) and a steel cable drum (104) at the bottom. The steel cable winch motor (103) and the steel cable drum (104) are driven and connected. The photovoltaic mounting frame (2) is provided with a steel cable connecting buckle (203) at one end away from the photovoltaic bracket (1). One end of a steel cable (105) is fixed and wound on the steel cable drum (104). The other end of the steel cable (105) passes through the guide pulley group (102) in the high side direction and is connected to the steel cable connecting buckle (203).

4. A foldable photovoltaic panel module according to claim 3, characterized in that, The photovoltaic mounting frame (2) includes frame longitudinal beams (201) and frame transverse beams (202). The two parallel frame longitudinal beams (201) and the two parallel frame transverse beams (202) are connected to each other to form a quadrilateral structure.

5. A foldable photovoltaic panel module according to claim 4, characterized in that, Both ends of the frame beam (202) are provided with trunnions (204). The frame beam (2) near the photovoltaic mounting frame (2) adjacent to the photovoltaic bracket (1) is hinged to the bottom of the photovoltaic bracket (1) through its trunnions (204). Steel cable connecting buckles (203) are symmetrically installed on both sides of the upper surface of the frame beam (2) at the far end of the photovoltaic mounting frame (2) adjacent to the photovoltaic bracket (1).

6. A foldable photovoltaic panel module according to claim 5, characterized in that, The hinge mechanism (3) includes a split gear (301), a hinge bracket (302), and a hinge strut (303). The split gear (301) is fixedly installed on the trunnion (204) of the frame beam (202) between two adjacent photovoltaic mounting frames (2). The two opposing split gears (301) between two adjacent photovoltaic mounting frames (2) mesh with each other. The hinge bracket (302) is in the shape of a "Z". A through hole is opened at the middle turning point of the hinge bracket (302). Two adjacent trunnions (204) are inserted into the two through holes of the same hinge bracket (302). The two ends of the hinge strut (303) are respectively hinged to the ends of the two hinge brackets (302) at the front and rear ends of the same photovoltaic bracket (1) on the same side. The end of the hinge strut (303) adjacent to the photovoltaic bracket (1) is hinged to the bottom of the photovoltaic bracket (1).

7. A foldable photovoltaic panel module according to claim 6, characterized in that, The bottom of the inner wall of the quadrilateral structure formed by the frame longitudinal beams (201) and frame transverse beams (202) is provided with a retaining edge.

8. A foldable photovoltaic panel module according to claim 7, characterized in that, The quadrilateral structure formed by the frame longitudinal beams (201) and frame transverse beams (202) is provided with reinforcing ribs parallel to the frame longitudinal beams (201) on its inner side.

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