Foldable photovoltaic module device

Abstract

The invention discloses a foldable photovoltaic module device, and particularly relates to the technical field of photovoltaic modules, the foldable photovoltaic module device comprises two bases, supporting rods are arranged in the middles of the upper parts of the two bases, supporting legs are fixedly mounted on the front and rear sides of the supporting rods, and the lower ends of the supporting legs are fixedly mounted at the upper ends of the bases; the upper ends of the two supporting rods are jointly and fixedly provided with an equipment box, and the two sides of each supporting rod are each provided with a folding and stretching support assembly. According to the foldable photovoltaic module device, the driving device is in linkage with the folding and stretching support assembly, one-button type unfolding or folding of the photovoltaic panel is achieved, the photovoltaic panel can be adjusted to the optimal light receiving angle when the photovoltaic panel is unfolded, and the sunlight absorption efficiency is remarkably improved; and meanwhile, a shielding protection device is arranged, a protection curtain is automatically unfolded after the photovoltaic panel is folded, a physical barrier is formed to resist impact of external force such as wind, snow and hail, and the service life of equipment is prolonged.

Description

Technical Field

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

[0002] Solar photovoltaic (PV) panels are devices that absorb sunlight and convert it into electrical energy. Most commercially available PV panels are installed directly on rooftops to receive sunlight. Some foldable PV panels have a larger overall area and receive more sunlight. However, foldable PV panels are also prone to damage over long periods of use, especially in high-latitude regions where severe weather is common. Without proper protection, the lifespan of foldable PV panels will be shortened, affecting their normal use. Furthermore, once installed, foldable PV panels are difficult to adjust, making them inconvenient to use. Also, the sun's position varies at different times, meaning that not all sunlight is received, affecting the input of electrical energy and resulting in low efficiency.

[0003] Therefore, a foldable photovoltaic module device needs to be designed. Summary of the Invention

[0004] The main objective of this invention is to provide a foldable photovoltaic module device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A foldable photovoltaic module device includes two bases, each with a support rod at its center. Support legs are fixedly installed on both the front and rear sides of each support rod, with the lower ends of the support legs fixedly installed on the upper ends of the bases. An equipment box is fixedly installed on the upper ends of both support rods. Folding and extending bracket assemblies are installed on both sides of each support rod. A driving device for unfolding or folding the folding and extending bracket assemblies is installed inside each support rod. Shielding and protective devices are fixedly installed on the bases, distributed on the left and right sides of the equipment box. Photovoltaic mounting components are installed on the folding and extending bracket assemblies.

[0006] Preferably, the support rod has an internal mounting groove and a through-hole movable groove. The driving device includes a first motor and two screws. The two screws are rotatably mounted in the two movable grooves. The screws on both sides extend through the mounting grooves and are respectively fixedly mounted with a first pulley and a second pulley. The mounting groove has an opening on its side. A transmission belt is wound around the outer surfaces of the first pulley and the second pulley. The first motor is fixedly mounted in one of the mounting grooves. The output end of the first motor is fixedly connected to a screw. A driving block is threaded onto the outer surface of the screw. The driving block slides up and down in the movable groove.

[0007] Preferably, the photovoltaic mounting assembly includes a first mounting frame, a second mounting frame, and a third mounting frame. Photovoltaic panels are fixedly installed inside the first mounting frame, the second mounting frame, and the first mounting frame and the second mounting frame are connected to a second connecting plate via a pivot shaft on their respective front and rear ends. The second mounting frame and the third mounting frame are connected to a first connecting plate via a pivot shaft on their respective front and rear ends. The third mounting frame is mounted on top between two front and rear support rods via a pivot shaft on its respective front and rear ends away from the second mounting frame.

[0008] Preferably, the folding and extending support assembly includes a first link, a second link, a third link, a fourth link, and a ninth link. The first link is hinged and rotatably mounted on one side of the drive block. The other end of the first link is rotatably connected to a seventh link via a pivot. Two third links are provided, and the two third links are hinged and rotatably mounted on the front and rear sides of the upper part of one end of the support rod. The pivot connecting the first link and the seventh link is rotatably connected to the lower part of the third link. A telescopic rod is slidably connected through the bottom of the third link. A fixing rod is fixedly mounted at the ends of the two telescopic rods. Rollers are rotatably connected to both ends of the fixing rod via pivots. The second link is hinged and rotatably mounted on the lower middle part of one end of the support rod. The other end of the second link passes through... A sixth link and a fifth link are rotatably connected between two third links via a pivot. A fourth link is hinged and rotatably mounted on the upper middle part of one end of a support rod. The other end of the fourth link is rotatably connected to the other end of the fifth link via a pivot. An eighth link is rotatably connected to the end of the sixth link away from the second link via a pivot. A second connecting plate is rotatably connected to the end of the seventh link away from the first link via a pivot. The middle parts of the seventh link and the middle parts of the sixth link are rotatably connected via a pivot. The two ends of a ninth link are fixedly mounted on both sides of one end of a first mounting frame via fixed shafts. The end of the eighth link away from the sixth link is rotatably connected to the middle part of the ninth link via a pivot. The middle parts of the second link and the middle parts of the first link are rotatably connected via a pivot. Preferably, the third link, fifth link, sixth link, seventh link, and eighth link are located between the two third links.

[0009] Preferably, the support rod, support legs, and folding extension bracket assembly are made of high-strength stainless steel.

[0010] Preferably, the upper end of the base has sliding grooves on both the front and rear sides, and the roller slides in the sliding grooves.

[0011] Preferably, the equipment box has two storage slots distributed on the left and right sides inside the middle part, and the bottom wall of the storage slots has an opening slot that communicates with the outside of the equipment box.

[0012] Preferably, the shielding and protection device includes four arc-shaped bent rods, a rotating rod, and a second motor. The four arc-shaped bent rods are respectively fixedly installed on both sides of the front and rear support rods. The bottom of each arc-shaped bent rod is fixedly connected to the base on the same side. Each of the two arc-shaped bent rods has a limiting groove at one end that is close to the other. The rotating rod is rotatably installed in the storage groove. A protective curtain is fixedly installed on the outer surface of the rotating rod. The protective curtain is wrapped around the outer surface of the rotating rod and then passes through the opening groove and is fixedly installed with a counterweight slide rod. The two ends of the counterweight slide rod slide in the limiting grooves on the front and rear sides. One end of the rotating rod rotates through and extends to the outside of the equipment box and is fixedly installed with a connecting rod. A driven gear is fixedly installed on the outer surface of the connecting rod. The second motor is fixedly installed on the equipment box. A main gear is fixedly installed at the output end of the second motor. The main gear meshes with the driven gear.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a foldable photovoltaic module device. By driving a folding and extending bracket assembly, the photovoltaic panel can be unfolded or folded with one click. When unfolded, the photovoltaic panel can be adjusted to the optimal light-receiving angle, significantly improving the solar absorption efficiency. When folded, the space occupied is greatly reduced, making it easier to cope with harsh environments. At the same time, a shielding and protective device is set up, which automatically unfolds the protective curtain after the photovoltaic panel is folded, forming a physical barrier to resist the impact of external forces such as wind, snow, and hail, extending the life of the equipment. The folding and extending bracket assembly has a multi-link folding bracket (including 9 sets of links) and a base sliding groove design to ensure that the unfolding or folding process is smooth and synchronous. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the photovoltaic mounting module of the present invention; Figure 4 This is a schematic diagram of the structure of the folding extension support assembly of the present invention; Figure 5 This is a schematic diagram of the folded state of the present invention; Figure 6 This is a cross-sectional view of the present invention; Figure 7 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 8 For the present invention Figure 2 Enlarged diagram of point B in the middle.

[0015] In the diagram: 1. Base; 2. Photovoltaic mounting assembly; 3. Support rod; 4. Support leg; 5. Folding and extending bracket assembly; 6. Equipment box; 7. Shielding and protective device; 8. Drive device; 21. First mounting frame; 22. Second mounting frame; 23. Third mounting frame; 24. Photovoltaic panel; 25. First connecting plate; 26. Second connecting plate; 101. Slide groove; 51. First connecting rod; 52. Second connecting rod; 53. Third connecting rod; 54. Fixing rod; 55. Roller; 56. Fourth connecting rod; 57. Fifth connecting rod; 58. 59. Sixth link; 510. Seventh link; 511. Eighth link; 512. Ninth link; 31. Mounting slot; 32. Movable slot; 81. First motor; 82. Screw; 83. Drive block; 84. First pulley; 85. Transmission belt; 86. Second pulley; 61. Storage slot; 62. Opening slot; 71. Rotating rod; 72. Arc-shaped curved rod; 73. Protective curtain; 74. Counterweight slide rod; 75. Connecting rod; 76. Driven gear; 77. Main gear; 78. Second motor; 531. Telescopic rod; 721. Limiting slot. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] Example 1 like Figure 1-2 As shown, a foldable photovoltaic module device includes two bases 1. A support rod 3 is provided at the center of the upper part of each base 1. Support legs 4 are fixedly installed on both the front and rear sides of each support rod 3. The lower ends of the support legs 4 are fixedly installed on the upper ends of the two support rods 3. An equipment box 6 is fixedly installed on the upper ends of both support rods 3. Folding extension bracket assemblies 5 are installed on both sides of each support rod 3. A driving device 8 is installed inside each support rod 3 to drive the folding extension bracket assemblies 5 to unfold or fold. Shielding and protective devices 7 are fixedly installed on the bases 1, and the shielding and protective devices 7 are distributed within the equipment box 6. On both sides, photovoltaic installation components 2 are installed on the folding and extending bracket assembly 5. In operation, the folding and extending bracket is driven to unfold and fold by the driving device 8, thereby driving the photovoltaic installation components 2 to unfold and fold. At the same time, a shielding and protective device 7 is set to protect the folded photovoltaic installation components 2 and prevent damage to the photovoltaic. The support rod 3, the support leg 4 and the folding and extending bracket assembly 5 are made of high-strength stainless steel, thereby improving the strength of the support rod 3, the support leg 4 and the folding and extending bracket assembly 5, making them corrosion resistant and having a strong load-bearing capacity; thus better supporting the photovoltaic installation components 2.

[0018] Example 2 See Figure 6As shown, the support rod 3 has an internal mounting groove 31 and a through-hole movable groove 32. The drive device 8 includes a first motor 81 and two screws 82. The two screws 82 are rotatably mounted in the two movable grooves 32 respectively, and the screws 82 on both sides extend through the mounting groove 31. The first pulley 84 and the second pulley 86 are fixedly installed inside the mounting groove 31. An opening is provided on the side of the mounting groove 31. A transmission belt 85 is wound around the outer surfaces of the first pulley 84 and the second pulley 86. The first motor 81 is fixedly installed in one of the mounting grooves 31. The output end of the first motor 81 is fixedly connected to a screw 82. A drive block 83 is threadedly connected to the outer surface of the screw 82. The drive block 83 slides up and down in the movable groove 32. In use, the first motor 81 drives the screw 82 to rotate. The screw 82 drives the drive block 83 to slide up and down in the movable groove 32. The rotation of the screw 82 drives a pulley to rotate. The first pulley 84 drives the second pulley 86 on the other side through the transmission belt 85, thereby driving the screw 82 on the other side to rotate. Thus, when the first motor 81 is working, it drives the screws 82 on both sides to rotate simultaneously, thereby driving the drive block 83 to move up and down simultaneously, thus completing the unfolding and folding of the folding extension bracket.

[0019] Example 3 See Figure 3-5 As shown, the photovoltaic mounting assembly 2 includes a first mounting frame 21, a second mounting frame 22, and a third mounting frame 23. Photovoltaic panels 24 are fixedly mounted inside each of the first mounting frame 21, the second mounting frame 22, and the third mounting frame 23. A second connecting plate 26 is rotatably connected to the front and rear ends of the first mounting frame 21 and the second mounting frame 22 at their respective proximal ends via a rotating shaft. A first connecting plate 25 is rotatably connected to the front and rear ends of the second mounting frame 22 and the third mounting frame 23 at their respective proximal ends via a rotating shaft. The front and rear ends of the third mounting frame 23... The side furthest from the second mounting frame 22 is rotatably mounted on the top between the front and rear support rods 3 via a pivot. When the folding extension bracket is unfolded, it drives the first mounting frame 21, the second mounting frame 22, and the third mounting frame 23 to unfold, thereby driving multiple photovoltaic panels 24 to unfold. When the folding extension bracket is folded, it drives the first mounting frame 21, the second mounting frame 22, and the third mounting frame 23 to fold, thereby driving multiple photovoltaic panels 24 to fold. The three photovoltaic panels 24 are hinged together by the first connecting plate 25 and the second connecting plate 26 to form a foldable unit, which takes into account both a large light-receiving area and compact storage.

[0020] The folding and extending support assembly 5 includes a first link 51, a second link 52, a third link 53, a fourth link 56, and a ninth link 511. The first link 51 is hinged and rotatably mounted on one side of the drive block 83. The other end of the first link 51 is rotatably connected to a seventh link 59 via a pivot. Two third links 53 are provided, and the two third links 53 are hinged and rotatably mounted on the front and rear sides of the upper part of one end of the support rod 3. The pivot connecting the first link 51 and the seventh link 59 is rotatably connected to the lower part of the third link 53. The bottom of the third link 53 is slidably connected to a telescopic rod 531. The ends of the two telescopic rods 531 are fixedly mounted to a fixing rod 54. Both ends of the fixing rod 54 are rotatably connected to rollers 55 via pivots. The second link 52 is hinged and rotatably mounted on the lower middle part of one end of the support rod 3. The other end of the second link 52 passes through... A sixth link 58 and a fifth link 57 are rotatably connected between the two third links 53 via a pivot. A fourth link 56 is rotatably mounted on the upper middle part of one end of the support rod 3 via a hinge. The other end of the fourth link 56 is rotatably connected to the other end of the fifth link 57 via a pivot. An eighth link 510 is rotatably connected to the end of the sixth link 58 away from the second link 52 via a pivot. A second connecting plate 26 is rotatably connected to the end of the seventh link 59 away from the first link 51 via a pivot. The middle part of the seventh link 59 and the middle part of the sixth link 58 are rotatably connected via a pivot. The two ends of the ninth link 511 are fixedly mounted on both sides of one end of the first mounting frame 21 via a fixed shaft. The middle part of the eighth link 510 away from the sixth link 58 is rotatably connected to the middle part of the ninth link 511 via a pivot. The middle part of the second link 52 and the middle part of the first link 51 are rotatably connected via a pivot.

[0021] When the drive device 8 drives the folding extension bracket to unfold, the drive block 83 drives one end of the first connecting rod 75 to move downward. During the movement of the first connecting rod 75, the second connecting rod 52 and the third connecting rod 53 unfold. During the unfolding of the third connecting rod 53, the telescopic rod 531 at the bottom extends outward, causing the roller 55 to slide in the slide groove 101. When the second connecting rod 52 and the seventh connecting rod 59 rotate, the sixth connecting rod 58 rotates. The sixth connecting rod 58 rotates and unfolds, driving the first mounting frame 21 to unfold through the eighth connecting rod 510. During the unfolding of the first mounting frame 21, the third mounting frame 23 unfolds through the second connecting plate 26. The second mounting frame 22 unfolds through the first connecting plate 25, driving the first mounting frame 21 to unfold, thereby driving the entire photovoltaic mounting module 2 to unfold and receive sunlight to generate electricity.

[0022] The third link 53, the fifth link 57, the sixth link 58, the seventh link 59, and the eighth link 510 are located between the two third links 53. During the folding and extension of the support frame, the third link 53, the fifth link 57, the sixth link 58, the seventh link 59, and the eighth link 510 will fold into each other and converge between the two third links 53.

[0023] The upper end of the base 1 has sliding grooves 101 on both the front and rear sides. The rollers 55 slide in the sliding grooves 101. During the unfolding process of the folding and extending bracket, the rollers 55 are driven to slide in the sliding grooves 101. The telescopic rod and roller structure enhance the dynamic stability of the bracket and prevent displacement.

[0024] Example 4 See Figure 7-8 As shown, the equipment box 6 has two storage slots 61 distributed on the left and right sides inside the middle part. The bottom wall of the storage slot 61 has an opening slot 62 that communicates with the outside of the equipment box 6. The equipment box 6 integrates a protective curtain storage slot to realize the concealed storage of the shielding and protection device and avoid interference with power generation.

[0025] The shielding and protection device 7 includes four arc-shaped curved rods 72, a rotating rod 71, and a second motor 78. The four arc-shaped curved rods 72 are respectively fixedly installed on both sides of the front and rear support rods 3. The bottom of each arc-shaped curved rod 72 is fixedly connected to the base 1 on the same side. Each of the two arc-shaped curved rods 72 has a limiting groove 721 at one end that is close to each other. The rotating rod 71 is rotatably installed in the storage groove 61. A protective curtain 73 is fixedly installed on the outer surface of the rotating rod 71. The protective curtain 73 is wrapped around the outer surface of the rotating rod 71 and then passes through the opening groove 62 and is fixedly installed with a counterweight slide rod 74. The two ends of the counterweight slide rod 74 slide in the limiting grooves 721 on the front and rear sides. One end of the rotating rod 71 rotates and extends through to the equipment box 6. An external connecting rod 75 is fixedly installed, and a driven gear 76 is fixedly installed on the outer surface of the connecting rod 75. The second motor 78 is fixedly installed on the equipment box 6, and a main gear 77 is fixedly installed at the output end of the second motor 78. The main gear 77 meshes with the driven gear 76. In use, the second motor 78 starts, driving the main gear 77 to rotate. The main gear 77 drives the driven gear 76 to rotate. The driven gear 76 drives the connecting rod 75 to rotate. The connecting rod 75 drives the rotating rod 71 to rotate. The rotating rod 71 drives the protective curtain 73 to unfold and roll up. When the protective curtain 73 is unfolded, a sliding rod is configured to pull the protective curtain 73 outward and downward along the arc groove, thereby shielding and protecting the folded photovoltaic installation components 2.

[0026] The working principle of this invention is as follows: In use, the first motor 81 drives the screw 82 to rotate, and the screw 82 drives the drive block 83 to slide up and down in the movable groove 32. Simultaneously, the rotation of the screw 82 drives a pulley to rotate. The first pulley 84 drives the second pulley 86 on the other side via the transmission belt 85, thereby driving the screw 82 on the other side to rotate. Thus, when the first motor 81 works, it simultaneously drives the screws 82 on both sides to rotate, thereby driving the drive block 83 to move downwards simultaneously. The drive block 83 drives one end of the first connecting rod 75 to move downwards. During the movement of the first connecting rod 75, the second connecting rod 52 and the third connecting rod 53 unfold. During the unfolding of the third connecting rod 53, the telescopic rod 531 at the bottom extends outwards, driving the roller 55 to slide in the sliding groove 101. When the second connecting rod 52 and the seventh connecting rod 59 rotate, the sixth connecting rod 58 rotates. The sixth connecting rod 58 rotates and unfolds, driving the first connecting rod 58 via the eighth connecting rod 510. When the first mounting frame 21 unfolds, the unfolding process of the first mounting frame 21 drives the third mounting frame 23 to unfold via the second connecting plate 26. The second mounting frame 22 drives the first mounting frame 21 to unfold via the first connecting plate 25, thereby driving the entire photovoltaic mounting module 2 to unfold. Similarly, when the photovoltaic mounting module 2 needs to be folded, the drive block 83 of the drive device 8 moves upward, thereby driving the folding extension bracket to fold, thus driving the photovoltaic mounting module 2 to fold up. At this time, the second motor 78 starts, driving the main gear 77 to rotate. The main gear 77 drives the driven gear 76 to rotate. The driven gear 76 drives the connecting rod 75 to rotate. The connecting rod 75 drives the rotating rod 71 to rotate. The rotating rod 71 drives the protective curtain 73 to unfold and roll up. When the protective curtain 73 unfolds, the sliding rod pulls the protective curtain 73 to move outward and downward along the arc groove, thereby shielding and protecting the folded photovoltaic mounting module 2 and preventing damage to the photovoltaic mounting module 2.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A foldable photovoltaic module device, characterized in that: It includes two bases (1), and a support rod (3) is provided at the middle of the upper part of each base (1). Support legs (4) are fixedly installed on the front and rear sides of the support rod (3). The lower end of the support legs (4) is fixedly installed on the upper end of the base (1). An equipment box (6) is fixedly installed on the upper end of the two support rods (3). Folding and extending bracket assemblies (5) are installed on both sides of the support rod (3). A driving device (8) for unfolding or folding the folding and extending bracket assembly (5) is installed inside the support rod (3). A shielding and protective device (7) is fixedly installed on the base (1). The shielding and protective device (7) is distributed on the left and right sides of the equipment box (6). A photovoltaic installation assembly (2) is installed on the folding and extending bracket assembly (5).

2. The foldable photovoltaic module device according to claim 1, characterized in that: The support rod (3) has an installation groove (31) inside and a movable groove (32) that runs through the left and right sides inside. The drive device (8) includes a first motor (81) and two screws (82). The two screws (82) are rotatably installed in the two movable grooves (32). The screws (82) on both sides rotatably extend through the installation groove (31) and are respectively fixedly installed with a first pulley (84) and a second pulley (86). The side of the installation groove (31) has an opening. The outer surfaces of the first pulley (84) and the second pulley (86) are wound with a transmission belt (85). The first motor (81) is fixedly installed in one of the installation grooves (31). The output end of the first motor (81) is fixedly connected to a screw (82). The outer surface of the screw (82) is threaded with a drive block (83). The drive block (83) slides up and down in the movable groove (32).

3. The foldable photovoltaic module device according to claim 2, characterized in that: The photovoltaic mounting assembly (2) includes a first mounting frame (21), a second mounting frame (22) and a third mounting frame (23). Photovoltaic panels (24) are fixedly installed inside the first mounting frame (21), the second mounting frame (22) and the third mounting frame (23). The first mounting frame (21) and the second mounting frame (22) are connected to a second connecting plate (26) by a rotating shaft on the side where the front and rear ends are close to each other. The second mounting frame (22) and the third mounting frame (23) are connected to a first connecting plate (25) by a rotating shaft on the side where the front and rear ends are close to each other. The third mounting frame (23) is mounted on the top between the front and rear support rods (3) by a rotating shaft on the side where the front and rear ends are far away from the second mounting frame (22).

4. A foldable photovoltaic module device according to claim 3, characterized in that: The folding extension support assembly (5) includes a first link (51), a second link (52), a third link (53), a fourth link (56), and a ninth link (511). The first link (51) is hinged and rotatably mounted on one side of the drive block (83). The other end of the first link (51) is rotatably connected to a seventh link (59) via a pivot. There are two third links (53), which are hinged and rotatably mounted on the front and rear ends of one end of the support rod (3). On one side, the pivot connecting the first link (51) and the seventh link (59) is rotatably connected to the lower part of the third link (53). The bottom of the third link (53) is slidably connected to a telescopic rod (531). The ends of the two telescopic rods (531) are fixedly installed with a fixing rod (54). Both ends of the fixing rod (54) are rotatably connected to rollers (55) through a pivot. The second link (52) is rotatably installed on the lower middle part of one end of the support rod (3) through a hinge. The other end of the second link (52) is connected to the support rod (3). The end of the fourth link (56) is rotatably connected to the middle of the upper side of one end of the support rod (3) via a hinge. The other end of the fourth link (56) is rotatably connected to the other end of the fifth link (57) via a hinge. The end of the sixth link (58) away from the second link (52) is rotatably connected to the eighth link (510) via a hinge. The seventh link (59) is away from the first link (510). One end of the seventh link (59) is rotatably connected to the second connecting plate (26) via a rotating shaft. The middle part of the seventh link (59) and the middle part of the sixth link (58) are rotatably connected via a rotating shaft. The two ends of the ninth link (511) are fixedly installed on both sides of one end of the first mounting frame (21) via a fixed shaft. The end of the eighth link (510) away from the sixth link (58) is rotatably connected to the middle part of the ninth link (511) via a rotating shaft. The middle part of the second link (52) and the middle part of the first link (51) are rotatably connected via a rotating shaft.

5. A foldable photovoltaic module device according to claim 4, characterized in that: The third link (53), fifth link (57), sixth link (58), seventh link (59), and eighth link (510) are located between the two third links (53).

6. A foldable photovoltaic module device according to claim 1, characterized in that: The support rod (3), support foot (4) and folding extension bracket assembly (5) are made of high-strength stainless steel.

7. A foldable photovoltaic module device according to claim 4, characterized in that: The upper end of the base (1) is provided with sliding grooves (101) on both the front and rear sides, and the roller (55) slides in the sliding grooves (101).

8. A foldable photovoltaic module device according to claim 1, characterized in that: The equipment box (6) has two storage slots (61) distributed on the left and right sides in the middle of its interior. The bottom wall of the storage slot (61) has an opening slot (62) that communicates with the outside of the equipment box (6).

9. A foldable photovoltaic module device according to claim 8, characterized in that: The shielding and protective device (7) includes four arc-shaped curved rods (72), a rotating rod (71), and a second motor (78). The four arc-shaped curved rods (72) are respectively fixedly installed on both sides of the front and rear support rods (3). The bottom of the arc-shaped curved rods (72) is fixedly connected to the base (1) on the same side. Each of the two arc-shaped curved rods (72) has a limiting groove (721) at one end that is close to each other. The rotating rod (71) is rotatably installed in the storage groove (61). A protective curtain (73) is fixedly installed on the outer surface of the rotating rod (71). The protective curtain (73) is wrapped around the rotating rod (71). The outer surface of the device box (6) is then penetrated by an opening groove (62) and a counterweight slide rod (74) is fixedly installed. The two ends of the counterweight slide rod (74) slide in the limiting grooves (721) on the front and rear sides. One end of the rotating rod (71) extends through the device box (6) and a connecting rod (75) is fixedly installed. A driven gear (76) is fixedly installed on the outer surface of the connecting rod (75). The second motor (78) is fixedly installed on the device box (6). A main gear (77) is fixedly installed at the output end of the second motor (78). The main gear (77) meshes with the driven gear (76).

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