Photovoltaic folding assembly, unfoldable photovoltaic assembly and use method

Abstract

The invention relates to the field of photovoltaic technology, and particularly discloses a photovoltaic folding assembly, an expandable photovoltaic assembly and a use method, and the photovoltaic folding assembly comprises two groups of photovoltaic folding plates which are in running fit, and rotating hinges which are installed at the ends of the photovoltaic folding plates and are in running fit with the photovoltaic folding plates. The photovoltaic assembly unit comprises a base, two groups of photovoltaic folding units mounted on the base, and a driving unit used for driving the two groups of photovoltaic folding units to rotate around the X-axis direction so as to approach or leave each other; the invention also discloses a use method of the photovoltaic assembly unit, the two groups of photovoltaic folding assemblies are driven by the driving unit to be folded, so that more photovoltaic assembly units can be accommodated in the same container; the two photovoltaic folding assemblies are driven by the driving unit to be unfolded, the two photovoltaic folding plates in the same photovoltaic folding assembly are rotationally unfolded through the rotating hinges, the photovoltaic folding plates are unfolded again in a book mode, and the large-scale electricity utilization requirement can be met.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and more specifically, to a photovoltaic folding component, an expandable photovoltaic component and a use method thereof. Background Art

[0002] In remote areas such as tunnel excavation projects or construction sites, ordinary industrial electricity is difficult to provide electricity in the short term, and more often diesel generators and other equipment are needed to generate electricity. Diesel generators have noise and pollution problems during use, and the cost of diesel consumption is high, which makes photovoltaic power generation an alternative. The tunnel construction period will not be too long, and the construction site will be relocated, so it is not suitable to make too much construction investment in electricity; at the same time, the daily electricity consumption of the above working conditions is large, and the total installed capacity of photovoltaic power generation must reach a certain scale.

[0003] In the existing photovoltaic field, traditional centralized photovoltaic operation and maintenance is complex and technically demanding, with huge initial investment; while distributed photovoltaic installed capacity is small and cannot meet large-scale electricity demand.

[0004] Therefore, the need for a photovoltaic form that can better meet various needs has become an urgent problem to be solved. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a photovoltaic folding assembly, an expandable photovoltaic assembly and a method of use;

[0006] The solution adopted by the present invention to solve the technical problem is:

[0007] A photovoltaic folding assembly comprises two groups of photovoltaic folding panels of the same structure and rotatably matched, and a swivel hinge installed at the ends of the photovoltaic folding panels and rotatably matched with the photovoltaic folding panels; each group of photovoltaic folding panels comprises an intermediate panel connected to the swivel hinge and rotatably matched, two groups of outer panels respectively arranged in one-to-one correspondence with the two sides of the intermediate panel and hingedly matched, and a locking member for locking the intermediate panel and the outer panel after being folded in a stacked shape.

[0008] In some possible embodiments, the two groups of outer panels include panel 1 hinged to one side of the middle panel, and panel 2 hinged to the other side of the middle panel and having the same structure as panel 1; after folding, panel 2 is located between panel 1 and the middle panel.

[0009] In some possible implementations, the locking member includes a hinge ear 1 installed on the outer side of the middle plate and connected to the first plate, and a hinge ear 2 installed on the outer side of the other side of the middle plate and connected to the second plate.

[0010] In some possible implementations, a bracket connected to a swivel hinge is provided on the top of the middle plate.

[0011] A deployable photovoltaic module unit comprises a base, two groups of photovoltaic folding units installed on the base and having the same structure, and a driving unit respectively drivingly matched with the two groups of photovoltaic folding units and used for driving the two groups of photovoltaic folding units to rotate around an X-axis direction to move closer to or farther from each other;

[0012] The photovoltaic folding unit comprises a transmission member which is hingedly matched with the base and transmission-matched with the driving unit, and a photovoltaic folding assembly which is connected with the transmission member and is as described above.

[0013] In some possible implementations, the transmission member is connected to the bottom of the middle plate on the side away from each other in the two groups of photovoltaic folding units;

[0014] The transmission member includes a crank articulated arm hingedly cooperated with the base and transmission-coordinated with the drive unit, and a transmission arm hingedly cooperated with the base and connected to the middle plate; an articulated seat is provided on the base and is respectively articulated with the crank articulated arm and the transmission arm; the crank articulated arm is connected to one end of the middle plate away from the hinge.

[0015] In some possible embodiments, the crank articulated arm includes a crank arm that is crank-shaped and connected to the middle plate, and a transmission shaft installed on the side of the crank arm away from the middle plate and connected to the drive unit; the axial direction of the transmission shaft is arranged along the X-axis direction.

[0016] In some possible embodiments, the driving unit includes a hydraulic drive cylinder respectively connected to the two groups of crank articulated arms and used to control the rotation of the crank articulated arms around the X-axis direction, and a hydraulic system respectively connected to the two groups of hydraulic drive cylinders; when the two groups of photovoltaic folding units are fully unfolded or stored, the long direction of the piston rod of the hydraulic drive cylinder is set along the Y-axis direction.

[0017] A method for using the above-mentioned expandable photovoltaic module unit, when folding the horizontally expanded photovoltaic module unit, specifically includes the following steps:

[0018] Step S1: folding the first and second panels in each set of photovoltaic folding panels and locking them with a locking member;

[0019] Step S2: rotating a group of photovoltaic folding panels that are not hinged to the base by 180° around the hinge, so that two groups of photovoltaic folding panels in each group of photovoltaic folding units are stacked;

[0020] Step S3: The piston cylinders of the two sets of hydraulic drive cylinders are synchronously controlled to extend through the hydraulic system, driving the two sets of crank articulated arms to rotate around the X-axis direction, thereby driving the two sets of photovoltaic folding units to approach each other around the X-axis to achieve folding and contraction. When the two sets of photovoltaic folding units are arranged along the Z-axis direction, the folding and contraction is completed;

[0021] On the contrary, the folded and contracted photovoltaic module unit can be unfolded.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention drives two groups of photovoltaic folding components to fold by a driving unit, so that more photovoltaic component units can be accommodated in the same container;

[0024] The present invention drives two groups of photovoltaic folding components to unfold through a driving unit, and realizes the rotation and unfolding of two groups of photovoltaic folding panels in the same photovoltaic folding component through a hinge, and the photovoltaic folding panels are unfolded in a book-like manner, so that large-scale electricity demand can be met when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the photovoltaic module unit in the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the photovoltaic folding assembly in the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the photovoltaic folding assembly when it is unfolded in the present invention;

[0028] Figure 4 It is a schematic diagram of the structure when two groups of photovoltaic folding assembly units are unfolded in the present invention;

[0029] Figure 5 It is a schematic structural diagram of the piston rod, the crank articulated arm and the base when two groups of photovoltaic folding assembly units are unfolded in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the intermediate process of the unfolding or folding process of two groups of photovoltaic folding assembly units in the present invention;

[0031] Figure 7 It is a schematic structural diagram of the piston rod, the crank articulated arm and the base in the middle process of the unfolding or folding process of two groups of photovoltaic folding assembly units in the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of two groups of photovoltaic folding assembly units in the present invention when they are folded;

[0033] Fig. 9 It is a structural schematic diagram of the piston rod, the crank articulated arm and the base when two groups of photovoltaic folding assembly units are folded in the present invention;

[0034] Fig.10 It is a schematic structural diagram of the expandable photovoltaic module unit of the present invention when it is expanded;

[0035] Fig.11is a schematic diagram of the internal structure of the driving unit in the present invention;

[0036] Fig.12 It is the principle diagram of the hydraulic system in the present invention;

[0037] Fig.13 A schematic diagram of the structure of folding and storing multiple groups of photovoltaic module units in a container in the invention;

[0038] Fig.14 It is a schematic diagram of the connection between the middle panels and the support rods when two sets of middle panels in the photovoltaic folding assembly of the present invention are unfolded;

[0039] Among them: 1. Photovoltaic folding plate; 11. Middle plate; 12. Plate one; 13. Plate two; 14. Locking piece; 141. Hinge ear one; 142. Hinge ear two; 2. Swivel hinge; 3. Base; 31. Articulated seat; 4. Drive unit; 41. Hydraulic drive cylinder; 411. Piston rod; 42. Hydraulic system; 421. Hydraulic power unit; 422. Solenoid valve; 423. Diverter valve; 424. Throttle valve; 43. Electronic control system; 5. Photovoltaic folding unit; 51. Transmission part; 511. Crank articulated arm; 5111. Transmission shaft; 512. Transmission arm; 52. Photovoltaic folding assembly; 10. Container; 20. Support rod. DETAILED DESCRIPTION

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity restriction, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The present invention is described in detail below.

[0042] like Figure 1-Figure 12 As shown:

[0043] A photovoltaic folding assembly 52, comprising two sets of photovoltaic folding panels 1 of the same structure and rotatably matched, and a hinge 2 installed at the end of the photovoltaic folding panel 1 and rotatably matched with the photovoltaic folding panel 1;

[0044] Each group of photovoltaic folding panels 1 includes an intermediate panel 11 connected to and rotatably matched with the hinge 2, two groups of outer panels respectively arranged one by one corresponding to the two sides of the intermediate panel 11 and hingedly matched, and a locking member 14 for locking the intermediate panel 11 and the outer panels after being folded in a stacked shape.

[0045] Furthermore, the photovoltaic folding assembly 52 also includes a support rod 20 for fixing two adjacent sets of intermediate panels 11 when the two sets of photovoltaic folding panels 1 are rotated and unfolded;

[0046] The two sets of photovoltaic folding panels 1 can realize 0-360° rotation in the same plane through the hinge 2;

[0047] The two groups of outer panels are respectively hinged to the two outer side surfaces of the middle panel 11, so that the middle panel 11 and the two groups of outer panels can be stacked after folding and can be fully unfolded; when unfolded, they have a larger working surface, thereby meeting the needs of large-scale electricity consumption. When the structure is in use, it can be folded and stored, so that when stored, the occupied area is small; thus, the installed capacity is large, the time required for unfolding and folding is extremely short, and the transportation volume of a single container 10 is large.

[0048] In some possible implementations, in order to effectively realize that the middle plate 11 and the two groups of outer plates can be stacked after folding; the two groups of outer plates include a plate 12 hinged to one side of the middle plate 11, and a plate 2 13 hinged to the other side of the middle plate 11 and having the same structure as the plate 12; after folding, the plate 2 13 is located between the plate 12 and the middle plate 11; the locking member 14 includes a hinge ear 141 installed on the outer side of the middle plate 11 and connected to the plate 12, and a hinge ear 2 142 installed on the outer side of the other side of the middle plate 11 and connected to the plate 2 13;

[0049] The hinge ear 141 is a long hinge ear, and the hinge ear 142 is a short hinge ear. The hinge ear 141 and the hinge ear 142 are both hinges, and the size of the hinge ear 141 is larger than that of the hinge ear 142.

[0050] Hinge ear 141 and hinge ear 2 142 are located on both sides of the middle plate 11. When folding, plate 2 13 is first folded through hinge ear 2 142, and then plate 12 is folded through hinge ear 141. After folding, plate 2 13 will be located between plate 1 12 and the middle plate 11. When unfolding, the middle plate 11 will be located between plate 1 12 and plate 2 13. Thus, the middle plate 11, plate 1 12, and plate 2 13 can be folded or unfolded like a book, so that the photovoltaic folding plate occupies less space. And with the rotating hinge, the two groups of photovoltaic folding plates can be stacked, so that the formed photovoltaic folding assembly occupies less space after folding.

[0051] In some possible implementations, in order to effectively realize that two groups of photovoltaic folding panels 1 in the same photovoltaic folding assembly 52 can rotate 0-360° in the same plane around the hinge 2; a bracket connected to the hinge 2 is provided on the top of the middle panel 11;

[0052] Two groups of through holes are provided on the bracket. After the two groups of middle plates are rotated and unfolded, the through holes on the two brackets will be coaxially connected. One end of the two groups of support rods 20 with external threads pass through the corresponding through holes, and nuts are installed on the sides of the two groups of middle plates away from each other to achieve fixed support of the two groups of middle plates.

[0053] A deployable photovoltaic assembly unit, comprising a base 3, two groups of photovoltaic folding units 5 installed on the base 3 and having the same structure, and a driving unit 4 respectively drivingly matched with the two groups of photovoltaic folding units 5 and used to drive the two groups of photovoltaic folding units 5 to rotate around the X-axis direction to move closer to or farther from each other; the photovoltaic folding unit 5 comprises a transmission member 51 articulated with the base 3 and drivingly matched with the driving unit 4, and a photovoltaic folding assembly 52 connected to the transmission member 51 and as described above;

[0054] The photovoltaic folding assembly 52 is connected to the driving unit 4 through the transmission member 51. When folding or unfolding, the driving unit 4 synchronously controls the two groups of transmission members 51 to rotate around the X-axis, thereby driving the two groups of photovoltaic folding assemblies 52 to move closer to or away from each other around the X-axis, thereby achieving folding or unfolding; wherein, after folding into place, the two groups of photovoltaic folding assemblies 52 are close to each other and fit together on one side and are arranged along the Z-axis direction; when unfolding, the two groups of photovoltaic folding assemblies 52 will be arranged horizontally.

[0055] In some possible implementations, the transmission member 51 is connected to the bottom of the middle plate 11 on the side away from each other in the two groups of photovoltaic folding units 5; the bottom described here is the side away from the hinge;

[0056] The transmission member 51 includes a crank articulated arm 511 which is hinged to the base 3 and transmits to the drive unit 4, and a transmission arm 512 which is hinged to the base 3 and connected to one end of the middle plate 11 away from the hinge; an articulated seat 31 which is respectively articulated to the crank articulated arm 511 and the transmission arm 512 is provided on the base 3; the crank articulated arm 511 is connected to one end of the middle plate 11 away from the hinge.

[0057] The crank articulated arm 511 will rotate around the X-axis direction when driven by the driving unit 4. Driven by the rotation of the crank articulated arm 511, the transmission arm 512 will be driven to rotate around the X-axis direction; thereby driving the photovoltaic folding assembly 52 connected thereto to rotate around the X-axis direction; causing the two groups of photovoltaic folding assemblies 52 to approach or move away from each other around the X-axis direction.

[0058] In some possible implementations, such as Figure 5-Figure 9 As shown, the crank articulated arm 511 includes a crank arm in a crank shape and connected to the middle plate 11, and a transmission shaft 5111 installed on the side of the crank arm away from the middle plate 11 and connected to the drive unit 4; the axial direction of the transmission shaft 5111 is set along the X-axis direction.

[0059] Specifically, Fig. 9 As shown, the crank arm includes a support portion which is arranged along the Z-axis direction and connected to the bottom of the middle plate 11 after being folded into place, and an arc-shaped transmission portion which is connected to one end of the support portion away from the middle plate 11;

[0060] The support part is hingedly matched with the hinge seat 31 provided on the base 3, and the transmission part is transmission-connected with the driving unit 4 through the transmission shaft 5111; the transmission shaft 5111 is connected to one end of the transmission part away from the support part;

[0061] Further, such as Figure 5-Figure 9 As shown, the arc-shaped opening formed by the transmission part is arranged on a side away from the driving unit 4;

[0062] There are four articulated seats 31, which are respectively articulated with the transmission arms 512 and the crank articulated arms 511 in the two groups of photovoltaic folding units 5; the transmission arms 512 and the crank articulated arms 511 in the two groups of photovoltaic folding units 5 are staggered; when the driving unit 4 controls the transmission part to move around the X-axis direction toward the side close to the driving unit 4, the two photovoltaic folding units 5 will be unfolded, otherwise they will be folded and contracted.

[0063] In some possible implementations, such as Fig.11As shown, the driving unit 4 is located between the two groups of photovoltaic folding units 5; the driving unit 4 includes a hydraulic driving cylinder 41 which is respectively connected to the two groups of crank articulated arms 511 and used to control the crank articulated arms 511 to rotate around the X-axis direction, a hydraulic system 42 which is respectively connected to the two groups of hydraulic driving cylinders 41, and an electronic control unit 43 which is connected to the hydraulic system 42; when the two groups of photovoltaic folding units are fully unfolded or stored, the long direction of the piston rod 411 of the hydraulic driving cylinder 41 is set along the Y-axis direction; the hydraulic system 42 includes a cylinder barrel, a piston rod 411 which is telescopically matched with the cylinder barrel, and the cylinder barrel is hingedly matched with the base 3.

[0064] The piston rods 411 of the two sets of hydraulic drive cylinders 41 are respectively connected to the transmission shafts 5111 provided on the corresponding two sets of transmission parts; when in use, the hydraulic system 42 will control the piston rods 411 of the two sets of hydraulic drive cylinders 41 to extend and retract synchronously, thereby realizing folding or unfolding;

[0065] Further, such as Fig.12 As shown, the hydraulic system 42 includes a hydraulic power unit 421, a solenoid valve 422 connected to the hydraulic power unit 421, a throttle valve 424 connected to the solenoid valve 422 and the rod chambers of the two groups of hydraulic drive cylinders 41, and a diverter valve 423 connected to the solenoid valve 422 and the rodless chambers of the two groups of hydraulic drive cylinders 41;

[0066] Specifically, Fig.12 As shown, when unfolding, the hydraulic power unit 421 starts to work, and the solenoid valve 422 is on the right; the hydraulic medium enters the rodless chamber through the diverter valve 423, the piston rod 411 will extend, and the diverter valve 423 will divert to ensure the synchronization of the process, and the speed is controlled through the throttle valve 424 to prevent rapid falling due to the effect of gravity.

[0067] When stored, the working solenoid valve 422 of the hydraulic power unit 421 is on the left, the hydraulic medium enters the rod chamber, and the piston rod 411 will shrink; the diverter valve 423 and the throttle valve 424 play the same role.

[0068] A method for using the above-mentioned expandable photovoltaic module unit, when folding the horizontally expanded photovoltaic module unit, specifically includes the following steps:

[0069] Step S1: folding the panel 1 12 and the panel 2 13 in each group of photovoltaic folding panels 1, and locking them with a locking member 14;

[0070] Specifically, when unfolding, the axis of the hinge 2 is arranged along the Z axis, and the second plate 13 is folded first, and then the first plate 12 is folded, so that the second plate 13 is located between the first plate 12 and the middle plate 11; then the first hinge ear 141 and the second hinge ear 142 are used to lock and fix the first plate 12 and the second plate 13 to the middle plate 11 respectively;

[0071] Step S2: rotating a group of photovoltaic folding panels 1 that are not hinged to the base 3 by 180° around the hinge 2, so that two groups of photovoltaic folding panels 1 in each group of photovoltaic folding units 5 are stacked;

[0072] Step S3: Synchronously control the extension of the piston cylinders of the two groups of hydraulic drive cylinders 41 through the hydraulic system 42, drive the two groups of crank articulated arms 511 to rotate around the X-axis direction, thereby driving the two groups of photovoltaic folding units 5 to approach each other around the X-axis to achieve folding and contraction. When the two groups of photovoltaic folding units 5 are arranged along the Z-axis direction, the folding and contraction are completed; place them in the container 10 so that the container 10 can accommodate more photovoltaic module units.

[0073] On the contrary, the folded and contracted photovoltaic module units can be unfolded; specifically, firstly, the piston rods 411 of the two groups of hydraulic drive cylinders 41 are controlled to contract through the through holes of the hydraulic system 42, so that the transmission part will move around the X-axis direction toward the side close to the drive unit 4, thereby driving the support part to move around the X-axis direction toward the side away from the drive unit 4, and the two groups of photovoltaic folding units 5 will move away from each other. When the two reach the specified position, a group of photovoltaic folding panels 1 that are not hinged to the base 3 will be rotated 180° around the hinge 2, so that the two groups of photovoltaic folding panels 1 in the same photovoltaic folding unit 5 are coaxial, and then the panel one 12 and the panel two 13 are unfolded in turn; it can be used, and the unfolding is simple and convenient.

[0074] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A photovoltaic folding assembly, characterized in that: The invention comprises two groups of photovoltaic folding panels with the same structure and rotationally matched, and a rotating hinge which is installed at the end of the photovoltaic folding panels and rotationally matched with the photovoltaic folding panels.

2. A photovoltaic folding assembly according to claim 1, characterized in that: Each group of photovoltaic folding panels includes a middle panel connected to a hinge and rotatably matched, two groups of outer panels respectively arranged one by one corresponding to the two sides of the middle panel and hingedly matched, and a locking member for locking the middle panel and the outer panels after they are folded in a stacked shape.

3. A photovoltaic folding assembly according to claim 2, characterized in that: The two groups of outer panels include panel one hinged to one side of the middle panel, and panel two hinged to the other side of the middle panel and having the same structure as panel one; after folding, panel two is located between panel one and the middle panel.

4. A photovoltaic folding assembly according to claim 3, characterized in that: The locking member comprises a hinge ear 1 installed on the outer side of the middle plate and connected to the first plate, and a hinge ear 2 installed on the outer side of the other side of the middle plate and connected to the second plate.

5. A photovoltaic folding assembly according to claim 3, characterized in that: A bracket connected with the hinge is arranged on the top of the middle plate.

6. A deployable photovoltaic module unit, characterized in that: It includes a base, two groups of photovoltaic folding units installed on the base and having the same structure, and a driving unit respectively matched with the two groups of photovoltaic folding units and used to drive the two groups of photovoltaic folding units to rotate around the X-axis direction to move closer to or farther away from each other; The photovoltaic folding unit includes a transmission member that is hingedly matched with the base and transmission-matched with the driving unit, and a photovoltaic folding assembly that is connected to the transmission member and is described in any one of claims 1-5.

7. The deployable photovoltaic module unit according to claim 6, characterized in that: The transmission member is connected to the bottom of the middle plate on the side away from each other in the two groups of photovoltaic folding units; The transmission member includes a crank articulated arm hingedly cooperated with the base and transmission-coordinated with the drive unit, and a transmission arm hingedly cooperated with the base and connected to the middle plate; an articulated seat is provided on the base and is respectively articulated with the crank articulated arm and the transmission arm; the crank articulated arm is connected to one end of the middle plate away from the hinge.

8. The deployable photovoltaic module unit according to claim 7, characterized in that: The crank articulated arm comprises a crank arm in a crank shape connected to the middle plate, and a transmission shaft installed on a side of the crank arm away from the middle plate and connected to the drive unit; the axial direction of the transmission shaft is arranged along the X-axis direction.

9. The deployable photovoltaic module unit according to claim 8, characterized in that: The driving unit includes a hydraulic driving cylinder which is respectively connected to the two groups of crank articulated arms and is used to control the rotation of the crank articulated arms around the X-axis direction, and a hydraulic system which is respectively connected to the two groups of hydraulic driving cylinders; when the two groups of photovoltaic folding units are fully unfolded or stored, the long direction of the piston rod of the hydraulic driving cylinder is set along the Y-axis direction.

10. A method for using a deployable photovoltaic module unit according to any one of claims 6 to 9, characterized in that: When folding the photovoltaic module unit that is horizontally unfolded, the following steps are specifically included: Step S1: folding the first and second panels in each set of photovoltaic folding panels and locking them with a locking member; Step S2: rotating a group of photovoltaic folding panels that are not hinged to the base by 180° around the hinge, so that two groups of photovoltaic folding panels in each group of photovoltaic folding units are stacked; Step S3: The piston cylinders of the two sets of hydraulic drive cylinders are synchronously controlled to extend through the hydraulic system, driving the two sets of crank articulated arms to rotate around the X-axis direction, thereby driving the two sets of photovoltaic folding units to approach each other around the X-axis to achieve folding and contraction. When the two sets of photovoltaic folding units are arranged along the Z-axis direction, the folding and contraction is completed; On the contrary, the folded and contracted photovoltaic module unit can be unfolded.

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