CN114785264B - Photovoltaic unit and photovoltaic module that can range upon range of draw in - Google Patents

Abstract

The invention relates to a photovoltaic unit and a photovoltaic module which can be stacked and folded, wherein the photovoltaic unit comprises: a slide rail member; the first support frame and the second support frame are arranged on the sliding rail piece in a sliding mode; the first plate surface is rotationally connected to the first support frame and is divided into a first short plate and a first long plate by taking the support position as a boundary; the second plate surface is rotatably connected to the second support frame and is divided into a second short plate and a second long plate by taking the support position as a boundary line, and the second short plate is close to the first long plate; one end of the first hydraulic rod is hinged to the first support frame, the other end of the first hydraulic rod is hinged to the bottom of the first short plate, one end of the second hydraulic rod is hinged to the second support frame, and the other end of the second hydraulic rod is hinged to the bottom of the second short plate. The invention has the advantages that: the first plate surface and the second plate surface can be overlapped, so that when the photovoltaic unit does not work, the dust accumulation can be reduced.

Description

Photovoltaic unit and photovoltaic module that can range upon range of draw in

Technical Field

The invention relates to the field of photovoltaic equipment, in particular to a photovoltaic unit and a photovoltaic assembly which can be stacked and folded.

Background

Photovoltaic modules are indispensable components of photovoltaic power generation systems, and generally include photovoltaic panels for absorbing and converting solar energy.

In order to adjust the photovoltaic panels to better receive sunlight, each photovoltaic module needs to be adjusted to a position suitable for receiving sunlight. However, a photovoltaic power generation system often includes a plurality of photovoltaic modules, and in order to enable each photovoltaic module to obtain sunlight irradiation of the largest area, the inclination angle of the photovoltaic panel in each photovoltaic module needs to be continuously adjusted according to the change of the position of the sun.

The photovoltaic panels of the existing photovoltaic module are supported by the telescopic rods, the included angle between each photovoltaic panel and the ground needs to be adjusted one by one, the workload of adjusting the photovoltaic panels one by one is large, and the photovoltaic modules are not beneficial to rapidly and uniformly completing the adjustment of the whole photovoltaic power generation system.

In addition, because the photovoltaic board exposes in the open air for a long time, the face receives dust to shield easily, and the clearance is comparatively loaded down with trivial details, and dust shields the conversion efficiency greatly reduced that can make the photovoltaic board.

Disclosure of Invention

Therefore, it is necessary to provide a photovoltaic unit and a photovoltaic module which can be stacked and folded, and can adjust an angle along with an illumination direction, and can be stacked and folded to reduce dust accumulation.

The invention discloses a photovoltaic unit capable of being stacked and folded, which comprises: a slide member; the first support frame and the second support frame are arranged on the sliding rail piece in a sliding mode; the first plate surface is rotationally connected to the first support frame and is divided into a first short plate and a first long plate by taking the support position as a boundary; the second plate surface is rotatably connected to the second support frame and is divided into a second short plate and a second long plate by taking the support position as a boundary line, and the second short plate is close to the first long plate; one end of the first hydraulic rod is hinged to the first support frame, the other end of the first hydraulic rod is hinged to the bottom of the first short plate, one end of the second hydraulic rod is hinged to the second support frame, and the other end of the second hydraulic rod is hinged to the bottom of the second short plate.

In one embodiment, the first long plate has a length longer than the first short plate, and the second long plate has a length longer than the second short plate.

In one embodiment, the photovoltaic unit capable of being stacked and furled further comprises a first expansion component, the first expansion component comprises a first main gear, a first driven gear, a first connecting rod, a second connecting rod and a first auxiliary board, the first main gear is fixedly arranged on the first support frame, the first driven gear is rotatably arranged on the first board and is meshed with the first main gear, the first connecting rod is fixedly arranged on the first driven gear, one end of the second connecting rod is hinged to one end of the first connecting rod far away from the first driven gear, the first auxiliary board is slidably arranged on the lower side of the first board, one end of the second connecting rod far away from the first connecting rod is hinged to the first auxiliary board, when the first board is in a horizontal state, the first auxiliary board extends out from one side of the first board, and when the first board is rotated to an inclined state, the first driven gear can rotate so as to drive the first connecting rod and the second connecting rod to rotate, so that the first auxiliary board moves to the first lower side.

In one embodiment, the photovoltaic unit capable of being stacked and folded further includes a second expansion component, the second expansion component includes a second main gear, a second driven gear, a third connecting rod, a fourth connecting rod, and a second auxiliary board surface, the second main gear is fixedly disposed on the second supporting frame, the second driven gear is rotatably disposed on the second board surface and is engaged with the second main gear, the third connecting rod is fixedly disposed on the second driven gear, one end of the fourth connecting rod is hinged to an end of the third connecting rod away from the second driven gear, the second auxiliary board surface is slidably disposed under the second board surface, one end of the fourth connecting rod away from the third connecting rod is hinged to the second auxiliary board surface, when the second board surface is in a horizontal state, the second auxiliary board surface extends from one side of the second board surface, and when the second board surface is rotated to an inclined state, the second driven gear can rotate, so as to drive the third connecting rod and the fourth connecting rod to rotate, so that the second auxiliary board surface moves to the second lower side.

In one embodiment, the photovoltaic unit that can range upon range of draw in still includes and passes the subassembly, it includes third support frame, arc hydraulic stem, shell, first branch, second branch to pass the subassembly, the arc hydraulic stem fix set up in on the slide rail spare, shell swivelling joint in on the slide rail spare, and with the arc hydraulic stem is connected, through control the arc hydraulic stem is flexible, can drive the shell is rotatory, the one end of first branch and second branch all with the shell is articulated, the one end that the shell was kept away from to first branch with first support frame is articulated, the one end that the shell was kept away from to second branch with the second support frame is articulated.

In one embodiment, the housing has a first extension and a second extension, the first strut is hinged to the first extension, and the second strut is hinged to the second extension.

In one embodiment, when the arc-shaped hydraulic rod is in a contracted state, the first support frame is farthest away from the third support frame, and the second support frame is farthest away from the third support frame.

In one embodiment, the photovoltaic unit capable of being stacked and furled further comprises a hydraulic cylinder, the first hydraulic rod, the second hydraulic rod and the arc-shaped hydraulic rod are all connected with the hydraulic cylinder, when the pressure in the hydraulic cylinder is increased, a medium in the hydraulic cylinder firstly enters the first hydraulic rod and the second hydraulic rod to enable the first board surface and the second board surface to be inclined, and when the first hydraulic rod and the second hydraulic rod are completely extended, the medium enters the arc-shaped hydraulic rod to enable the first support frame and the second support frame to be far away from the third support frame.

In one embodiment, the first support frame is provided with a first abutting part, when the first hydraulic rod extends to enable the first support frame to rotate and incline, the first abutting part can abut against the first board surface to limit the first board surface to rotate continuously; the second support frame is provided with a second abutting portion, when the second hydraulic rod extends, the second support frame is enabled to rotate and incline, and the second abutting portion can abut against the second board surface to limit the second board surface to rotate continuously.

The invention also discloses a photovoltaic module, which is formed by applying at least two photovoltaic units which can be stacked and folded as described above and arranging the photovoltaic units which can be stacked and folded in a linear array.

The invention has the advantages that:

(1) The first plate surface and the second plate surface can be superposed, so that when the photovoltaic unit does not work, dust accumulation can be reduced;

(2) The first long plate and the first short plate are arranged and matched with the first hydraulic rod, so that the first plate surface can always keep the trend of clockwise rotation to an inclined state, the second long plate and the second short plate are arranged and matched with the second hydraulic rod, so that the second plate surface can always keep the trend of clockwise rotation to an inclined state, and therefore the first long plate and the second short plate can be matched with the arc-shaped hydraulic rod;

(3) The first expansion assembly and the second expansion assembly are arranged, the rotation of the first board surface and the second board surface is matched, and the distance between the first support frame and the second support frame is increased, so that the work conversion capacity of the photovoltaic unit can be improved; and when the photovoltaic unit was drawn in, first vice face can the sliding movement to first face below, and the vice face of second can the sliding movement to the below of second face to can effectively prevent piling up of dust.

Drawings

Fig. 1 is a perspective view of a photovoltaic unit that can be stacked and collapsed in accordance with the present invention;

fig. 2 is a perspective view of another perspective view of a photovoltaic unit according to the present invention that can be stacked and collapsed;

fig. 3 is a front view of a photovoltaic unit capable of being stacked and folded in a first working state according to the present invention;

fig. 4 is a front view of a photovoltaic unit capable of being stacked and folded in a second working state according to the present invention;

fig. 5 is a front view of a photovoltaic unit capable of being stacked and folded in a third operating state according to the present invention;

fig. 6 is a front view of a photovoltaic unit capable of being stacked and folded in a fourth working state according to the present invention;

FIG. 7 is a perspective view of a portion of the structure provided by the present invention;

FIG. 8 is a top view of a pusher shoe provided by the present invention;

FIG. 9 isbase:Sub>A cross-sectional view at A-A of FIG. 8 in accordance with the present invention;

FIG. 10 is a cross-sectional view of the present invention according to another operational condition of FIG. 9;

fig. 11 is a perspective view of an arcuate hydraulic ram provided by the present invention.

In the drawing, theslide rail member 11, thefirst support frame 12, thefirst abutting portion 121, thefirst plate surface 2, the first long plate 21, the first short plate 22, the firstmain gear 31, the first drivengear 32, the first connectingrod 33, the second connectingrod 34, the firstauxiliary plate surface 35, thesecond support frame 13, the second abuttingportion 131, thesecond plate surface 4, the secondlong plate 41, the secondshort plate 42, the second main gear 51, the second driven gear 52, the third connectingrod 53, the fourth connectingrod 54, the secondauxiliary plate surface 55, thepushing assembly 6, thethird support frame 61, the arc-shapedhydraulic rod 62, thehousing 63, the first extendingportion 631, the second extendingportion 632, thefirst support rod 64, thesecond support rod 65, the firsthydraulic rod 71, and the secondhydraulic rod 72 are shown.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 11, the present invention discloses a photovoltaic unit (hereinafter referred to as a photovoltaic unit) capable of being stacked and folded, comprising: aslide rail member 11; thefirst support frame 12 and thesecond support frame 13 are arranged on the slidingrail part 11 in a sliding manner; thefirst plate surface 2 is rotatably connected to thefirst support frame 12 and is divided into a first short plate 22 and a first long plate 21 by taking the support position as a boundary; thesecond plate surface 4 is rotatably connected to thesecond support frame 13 and is divided into a secondshort plate 42 and a secondlong plate 41 by taking the support position as a boundary, and the secondshort plate 42 is positioned at one side close to the first long plate 21; one end of the firsthydraulic rod 71 is hinged to thefirst support frame 12, the other end of the firsthydraulic rod 71 is hinged to the bottom of the first short plate 22, one end of the secondhydraulic rod 72 is hinged to thesecond support frame 13, and the other end of the secondhydraulic rod 72 is hinged to the bottom of the secondshort plate 42.

Preferably, the length of the first long plate 21 is longer than that of the first short plate 22, and the length of the secondlong plate 41 is longer than that of the secondshort plate 42.

It can be understood that, thefirst support frame 12 and thesecond support frame 13 can slide on theslide rail member 11 to control the distance between thefirst board surface 2 and thesecond board surface 4, and the joint of thefirst board surface 2 and thefirst support frame 12 is not in the middle, so that the first long board 21 is located at the lower side of the secondshort board 42 in the natural state, that is, thefirst board surface 2 is in the inclined state, and similarly, thesecond board surface 4 is also in the inclined state, and when the firsthydraulic rod 71 and the secondhydraulic rod 72 contract, thefirst board surface 2 and thesecond board surface 4 can be driven to rotate anticlockwise to the horizontal direction, and further, the firsthydraulic rod 71 and the secondhydraulic rod 72 continue to contract, so that thefirst board surface 2 and thesecond board surface 4 can incline to the other side.

Preferably, as shown in fig. 2 and 7, the photovoltaic unit capable of being stacked and folded further includes a first expansion assembly, the first expansion assembly includes a firstmain gear 31, a first drivengear 32, afirst connecting rod 33, a second connectingrod 34, and a firstauxiliary plate surface 35, the firstmain gear 31 is fixedly disposed on thefirst support frame 12, the first drivengear 32 is rotatably disposed on thefirst plate surface 2 and is engaged with the firstmain gear 31, the first connectingrod 33 is fixedly disposed on the first drivengear 32, one end of the second connectingrod 34 is hinged to one end of the first connectingrod 33 away from the first drivengear 32, the firstauxiliary plate surface 35 is slidably disposed under thefirst plate surface 2, one end of the second connectingrod 34 away from the first connectingrod 33 is hinged to the firstauxiliary plate surface 35, when thefirst plate surface 2 is in a horizontal state, the firstauxiliary plate surface 35 extends out of one side of thefirst plate surface 2, and when thefirst plate surface 2 is rotated clockwise to an inclined plate surface state, the firstauxiliary connecting rod 32 can rotate to drive the first auxiliary connectingrod 33 to move the firstauxiliary plate surface 35 to the lower side.

Preferably, the photovoltaic unit capable of being stacked and folded further includes a second expansion component, the second expansion component includes a second main gear 51, a second driven gear 52, athird link 53, afourth link 54, and a secondauxiliary plate surface 55, the second main gear 51 is fixedly disposed on the second supportingframe 13, the second driven gear 52 is rotatably disposed on thesecond plate surface 4 and is engaged with the second main gear 51, thethird link 53 is fixedly disposed on the second driven gear 52, one end of thefourth link 54 is hinged to an end of thethird link 53 away from the second driven gear 52, the secondauxiliary plate surface 55 is slidably disposed under thesecond plate surface 4, and an end of thefourth link 54 away from thethird link 53 is hinged to the secondauxiliary plate surface 55, when thesecond plate surface 4 is in a horizontal state, the secondauxiliary plate surface 55 extends from a side of thesecond plate surface 4, and when thesecond plate surface 4 is rotated clockwise to an inclined state, the second auxiliary plate surface 52 can be rotated, so as to drive thethird link 53 and thefourth link 54, so that the secondauxiliary link 55 is rotated to move to the lower side of the secondauxiliary plate surface 4.

It can be understood that, through setting up first extension subassembly, whenfirst face 2 rotates to the horizontality, firstauxiliary face 35 can stretch out fromfirst face 2 one side to improve the photic area, likewise, whensecond face 4 rotates to the horizontality, secondauxiliary face 55 can stretch out fromsecond face 4 one side.

Further, the firstmain gear 31 and the second main gear 51 are not complete gears, when thefirst board surface 2 and thesecond board surface 4 rotate to the horizontal state, the firstsub board surface 35 and the secondsub board surface 55 completely extend, as thefirst board surface 2 and thesecond board surface 4 continue to rotate, the first drivengear 32 disengages from the firstmain gear 31, and the second driven gear 52 disengages from the second main gear 51, so that thefirst board surface 2 and thesecond board surface 4 continue to maintain the extended state, when the firsthydraulic rod 71 and the secondhydraulic rod 72 extend, thefirst board surface 2 and thesecond board surface 4 rotate reversely, when thefirst board surface 2 returns to the horizontal state again, the first drivengear 32 reengages with the firstmain gear 31, and when thesecond board surface 4 returns to the horizontal state again, the second driven gear 52 reengages with the second main gear 51.

It should be noted that in the present embodiment, the diameter of the first driving gear is larger than that of the first drivengear 32, and the diameter of the second driving gear is larger than that of the second driven gear 52. With this arrangement, when thefirst plate surface 2 and thesecond plate surface 4 rotate by a small angle, thefirst link 33 and thethird link 53 can be driven to rotate by a large angle, so as to extend and retract the firstauxiliary plate surface 35 and the secondauxiliary plate surface 55.

Preferably, the photovoltaic unit that can fold up and draw in still includes pushing awaysubassembly 6, pushing awaysubassembly 6 includesthird support frame 61, archydraulic stem 62,shell 63,first branch 64,second branch 65, archydraulic stem 62 fix set up in on the slide rail spare 11,shell 63 swivelling joint in on the slide rail spare 11, and with archydraulic stem 62 is connected, through control archydraulic stem 62 is flexible, can drive theshell 63 is rotatory, the one end offirst branch 64 andsecond branch 65 all withshell 63 is articulated, the one end thatfirst branch 64 kept away fromshell 63 withfirst support frame 12 is articulated, the one end thatsecond branch 65 kept away fromshell 63 withsecond support frame 13 is articulated.

Preferably, theouter shell 63 has a first extendingportion 631 and a second extendingportion 632 symmetrically arranged, thefirst support rod 64 is hinged to the first extendingportion 631, and thesecond support rod 65 is hinged to the second extendingportion 632.

It can be understood that, by providing thefirst extension portion 631 and thesecond extension portion 632, when the housing rotates, thefirst support rod 64 and thesecond support rod 65 can be driven to rotate, so that thefirst support frame 12 and thesecond support frame 13 are close to or far away from thethird support frame 61.

Preferably, when the arc-shapedhydraulic rod 62 is in the retracted state, as shown in fig. 8 to 10, thefirst support frame 12 is farthest away from thethird support frame 61, and thesecond support frame 13 is farthest away from thethird support frame 61.

Preferably, the photovoltaic unit capable of being stacked and furled further comprises a hydraulic cylinder (not shown), the firsthydraulic rod 71, the secondhydraulic rod 72 and the arc-shapedhydraulic rod 62 are all connected with the hydraulic cylinder, when the pressure in the hydraulic cylinder increases, a medium in the hydraulic cylinder firstly enters the firsthydraulic rod 71 and the secondhydraulic rod 72, so that thefirst plate surface 2 and thesecond plate surface 4 are inclined, and when the firsthydraulic rod 71 and the secondhydraulic rod 72 are fully extended, the medium enters the arc-shapedhydraulic rod 62, so that thefirst support frame 12 and thesecond support frame 13 are far away from thethird support frame 61.

Preferably, thefirst support frame 12 is provided with afirst abutting portion 121, when the firsthydraulic rod 71 extends to rotate and tilt thefirst support frame 12, thefirst abutting portion 121 can abut against thefirst board surface 2 to limit thefirst board surface 2 from rotating continuously; thesecond support frame 13 is provided with asecond abutting portion 131, when the secondhydraulic rod 72 extends to rotate and tilt thesecond support frame 13, the second abuttingportion 131 can abut against thesecond board surface 4 to limit thesecond board surface 4 to rotate continuously.

It can be understood that the first abuttingportion 121 can enable thefirst board surface 2 to keep an inclined state instead of a vertical state, the second abuttingportion 131 can enable thesecond board surface 4 to keep an inclined state instead of a vertical state, and thefirst board surface 2 and thesecond board surface 4 keep an inclined state, so that impact of strong wind at night on the board surfaces can be effectively reduced, and stability of the photovoltaic unit is improved.

The invention also discloses a photovoltaic module which is formed by applying at least two photovoltaic units which can be stacked and folded, and arranging the photovoltaic units which can be stacked and folded in a linear array.

Furthermore, the plurality of photovoltaic units are synchronously controlled through the same hydraulic cylinder, so that the plurality of photovoltaic units can synchronously work, and the control is simple and convenient.

The working mode of the invention is as follows: as shown in fig. 6, when there is no light at night, the photovoltaic units are in a stacked state, and thesecond panel 4 is partially located above thefirst panel 2 to partially shield thefirst panel 2, so that the dust deposition speed on thefirst panel 2 can be reduced. It is worth mentioning that, thefirst plate surface 2 and thesecond plate surface 4 still keep the inclined state at this time, so that the impact of the airflow on the plate surfaces can be effectively reduced, and the stability of the photovoltaic unit is improved.

When the day comes, the hydraulic cylinder is controlled to draw out the medium from the firsthydraulic rod 71, the secondhydraulic rod 72 and the arc-shapedhydraulic rod 62, it is worth mentioning that thefirst support frame 12 deviates from the middle of thefirst board surface 2, so that the first long board 21 is heavier than the first short board 22, and the weight of one side of the first long board 21 is further increased by the arrangement of the first extension component, so that thefirst board surface 2 tends to keep an inclined state, and similarly, thesecond board surface 4 also tends to keep an inclined state, so that when the hydraulic cylinder starts to draw out the medium from the firsthydraulic rod 71, the secondhydraulic rod 72 and the arc-shapedhydraulic rod 62, the medium in the arc-shapedhydraulic rod 62 is preferentially drawn out, and thehousing 63 rotates counterclockwise as shown in fig. 9 and 10, so that thefirst support frame 12 and thesecond support frame 13 synchronously depart from thethird support frame 61 as shown in fig. 5.

Then, with the change of the position of the sun, by continuously extracting the media in the firsthydraulic rod 71 and the secondhydraulic rod 72, thefirst board 2 and thesecond board 4 move in synchronization with the position of the sun, the position of the elevation angle of the sun is kept at the maximum position, and with the counterclockwise synchronous rotation of thefirst board 2 and thesecond board 4 to the horizontal state, as shown in fig. 4, the firstsecondary board 35 and the secondsecondary board 55 also extend to the maximum length, so as to increase the illumination area of the photovoltaic unit.

Further, as shown in fig. 3, as the position of the sun gradually decreases, the media in the firsthydraulic rod 71 and the secondhydraulic rod 72 are continuously pumped out, so that thefirst board surface 2 and thesecond board surface 4 continuously move synchronously with the position of the sun, the first drivengear 32 is disengaged from the firstmain gear 31, and the second driven gear 52 is disengaged from the second main gear 51, so that the firstsub-board surface 35 and the secondsub-board surface 55 continuously keep the extended state.

After the sun falls on a mountain and the photovoltaic unit needs to be folded, a medium is filled into the firsthydraulic rod 71, the secondhydraulic rod 72 and the arc-shapedhydraulic rod 62 through the hydraulic cylinder, it should be noted that since thefirst board surface 2 and thesecond board surface 4 have a tendency of clockwise rotation, the medium preferentially enters the firsthydraulic rod 71 and the secondhydraulic rod 72, so that the firsthydraulic rod 71 and the secondhydraulic rod 72 extend, the photovoltaic unit returns to the state shown in fig. 5, the medium continues to be filled, the medium enters the arc-shapedhydraulic rod 62, theshell 63 rotates clockwise, thefirst support frame 12 and thesecond support frame 13 synchronously approach thethird support frame 61, and the folding of the photovoltaic unit is completed as shown in fig. 6.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (7)

1. The utility model provides a photovoltaic unit that can range upon range of draw in, its characterized in that, the photovoltaic unit that can range upon range of draw in include:

a slide rail member;

the first support frame and the second support frame are arranged on the sliding rail piece in a sliding mode;

the first plate surface is rotationally connected to the first support frame and is divided into a first short plate and a first long plate by taking the support position as a boundary;

the second plate surface is rotatably connected to the second support frame and is divided into a second short plate and a second long plate by taking the support position as a boundary line, and the second short plate is close to the first long plate;

one end of the first hydraulic rod is hinged on the first support frame, the other end of the first hydraulic rod is hinged with the bottom of the first short plate, one end of the second hydraulic rod is hinged on the second support frame, the other end of the second hydraulic rod is hinged with the bottom of the second short plate,

the first long plate having a length longer than that of the first short plate, the second long plate having a length longer than that of the second short plate,

the photovoltaic unit capable of being folded in a stacked manner further comprises a first expansion assembly, the first expansion assembly comprises a first main gear, a first driven gear, a first connecting rod, a second connecting rod and a first auxiliary plate surface, the first main gear is fixedly arranged on the first support frame, the first driven gear is rotatably arranged on the first plate surface and meshed with the first main gear, the first connecting rod is fixedly arranged on the first driven gear, one end of the second connecting rod is hinged to one end, away from the first driven gear, of the first connecting rod, the first auxiliary plate surface is slidably arranged on the lower side of the first plate surface, one end, away from the first connecting rod, of the second connecting rod is hinged to the first auxiliary plate surface, when the first plate surface is in a horizontal state, the first auxiliary plate surface extends out of one side of the first plate surface, when the first plate surface is rotated clockwise to an inclined state, the first driven gear can rotate, so that the first connecting rod and the second connecting rod are driven to rotate, and the first auxiliary plate surface moves to the lower side of the first plate surface,

the photovoltaic unit that can range upon range of draw in still includes second extension subassembly, second extension subassembly includes second master gear, second driven gear, third connecting rod, fourth connecting rod, the vice face of second, the second master gear fixed set up in on the second support frame, second driven gear rotate set up in on the second face and with the meshing of second master gear, the third connecting rod fixed set up in on the second driven gear, fourth connecting rod one end articulate in the third connecting rod is kept away from the one end of second driven gear, the vice face of second slide set up in second face downside, the one end that the third connecting rod was kept away from to the fourth connecting rod articulate in the vice face of second, works as when the second face is the horizontality, the vice face of second is followed one side of second face is stretched out, works as when the clockwise rotation of second face is to the tilt state, second driven gear can rotate, thereby drive the third connecting rod is rotatory with the fourth, makes the vice face of second move to second face downside.

2. The photovoltaic unit capable of being stacked and furled according to claim 1, further comprising a pushing assembly, wherein the pushing assembly comprises a third support frame, an arc-shaped hydraulic rod, a housing, a first support rod and a second support rod, the arc-shaped hydraulic rod is fixedly arranged on the sliding rail piece, the housing is rotatably connected to the sliding rail piece and connected with the arc-shaped hydraulic rod, the housing can be driven to rotate by controlling the extension and retraction of the arc-shaped hydraulic rod, one ends of the first support rod and the second support rod are hinged to the housing, one end of the first support rod, which is far away from the housing, is hinged to the first support frame, and one end of the second support rod, which is far away from the housing, is hinged to the second support frame.

3. The stackable photovoltaic unit of claim 2, wherein the outer casing has a first extension and a second extension, the first strut is hinged to the first extension, and the second strut is hinged to the second extension.

4. The stackable and collapsible photovoltaic unit of claim 2, wherein the first support shelf is furthest from the third support shelf and the second support shelf is furthest from the third support shelf when the curved hydraulic ram is in a collapsed state.

5. The photovoltaic unit capable of being stacked and furled as claimed in claim 4, further comprising a hydraulic cylinder, wherein the first hydraulic rod, the second hydraulic rod and the arc-shaped hydraulic rod are all connected with the hydraulic cylinder, when the pressure in the hydraulic cylinder is increased, a medium in the hydraulic cylinder firstly enters the first hydraulic rod and the second hydraulic rod to incline the first board surface and the second board surface, and when the first hydraulic rod and the second hydraulic rod are completely extended, the medium enters the arc-shaped hydraulic rod to keep the first support frame and the second support frame away from the third support frame.

6. The photovoltaic unit according to claim 1, wherein the first support frame is provided with a first abutting portion, when the first hydraulic rod extends to tilt the first support frame, the first abutting portion can abut against the first board surface to limit the first board surface from rotating continuously; the second support frame is provided with a second abutting portion, when the second hydraulic rod extends, the second support frame is enabled to rotate and incline, and the second abutting portion can abut against the second board surface so as to limit the second board surface to rotate continuously.

7. A photovoltaic module, characterized in that at least two photovoltaic units as claimed in any one of claims 1 to 6 are used, and at least two photovoltaic units are arranged in a linear array.

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