WO2016034135A1

WO2016034135A1 - Double-shaft photovoltaic tracking system of push rod type and photovoltaic device using same

Info

Publication number: WO2016034135A1
Application number: PCT/CN2015/088890
Authority: WO
Inventors: 吴建农
Original assignee: 浙江同景新能源集团有限公司
Priority date: 2014-09-05
Filing date: 2015-09-02
Publication date: 2016-03-10

Abstract

Disclosed is a double-shaft photovoltaic tracking system of push rod type and a photovoltaic device using same. The system comprises: a primary photovoltaic subsystem (101) and one or more secondary photovoltaic subsystems (102) arranged on at least one side of the primary photovoltaic subsystem (101), wherein the primary photovoltaic subsystem (101) and the secondary photovoltaic subsystems (102) respectively comprise a beam frame (103) for mounting one or more photovoltaic panels (104), and the beam frame (103) can turn around a rotating shaft (115) in a first direction (A) perpendicular to the length direction of the beam frame (103); a push rod moving system (105) comprising a motor (106) and a first push rod (107) which is arranged perpendicular to the length direction of the beam frame (103), the first push rod (107) being respectively connected to the beam frame (103) of the primary photovoltaic subsystem (101) and the secondary photovoltaic subsystems (102) via push rod connectors (108); and a second push rod (110) arranged in the length direction of the beam frame (103), the second push rod (110) respectively being connected to the photovoltaic panels (104).

Description

Push rod type two-axis photovoltaic tracking system and photovoltaic device using the same

Technical field

The present invention generally relates to the field of solar photovoltaic, and in particular to a push-rod type dual-axis photovoltaic tracking system and a photovoltaic device using the same.

Background technique

Existing photovoltaic tracking systems generally only track sunlight in the east-west direction, but are fixed in the north-south direction. For example, the Chinese invention patent application with the application number CN201110114456.7, in which the photovoltaic module is installed between the two oblique beams 3 Only the beam 1 can be rotated as an axis to find the optimum illumination angle of the sunlight. However, due to the non-horizontal terrain, cloud cover over the sky, or seasonal illumination differences in many areas, the east-west adjustable, north-south fixed PV tracking system does not optimally track sunlight.

Each of the photovoltaic tracking subsystems of the existing rotary-axis photovoltaic tracking system has a rotating shaft, and the rotating axes of the respective photovoltaic tracking subsystems are connected to each other. Wherein, the rotating shaft is driven by a motor disposed at the end of the rotating shaft to simultaneously flip the solar panels of all the photovoltaic tracking subsystems, as disclosed in US Pat. No. 8,533,504 B2, wherein the transmission mechanism of the photovoltaic tracking system is relatively complicated and requires many components. Moreover, the solar battery module 200 used is large in volume, so that its rotating shaft (ie, the first axis A) needs to be arranged closer to the ground, otherwise the center of gravity is unstable and easy to fall. Since the rotating shaft is closer to the ground, hindering the communication between the vehicle and the personnel, the space under the photovoltaic tracking system cannot be fully utilized.

In addition, the tracking of the existing putter-type photovoltaic tracking system in the east-west direction is generally achieved by a motor placed at the most adjacent one of the plurality of photovoltaic tracking subsystems to move the push rod horizontally. The pusher, in turn, flips the connected photovoltaic panels, for example, the Chinese patent application with the application number CN201320466052.9. The disadvantage of this solution is that since the motor is arranged at the photovoltaic tracking subsystem located at the far side, the material strength and thickness of the push rod are required in order to drive the photovoltaic tracking subsystem on the far side of the other side. Higher requirements are imposed, which increases costs and the putter is prone to failure.

Summary of the invention

The object of the present invention is to propose a push-rod type two-axis photovoltaic tracking system capable of avoiding the above-mentioned disadvantages of the prior art, that is to say, in the push rod type double-axis photovoltaic system In the case of the tracking system, it is possible to track the sunlight in the east-west direction and the north-south direction.

Yet another object of the present invention is that in the pusher type dual-axis photovoltaic tracking system, a pusher having a lower strength and a lower thickness can be used without failure, thereby greatly reducing the manufacturing cost of the system and by pulling Drive mechanism to enhance the reliability and stability of the PV tracking system.

Yet another object of the present invention is to provide a water photovoltaic device using the above-described push-rod type two-axis photovoltaic tracking system, thereby arranging water photovoltaic equipment on the water surface without affecting the passage of the water surface, and contributing to further development of the water body. use. Another object of the present invention is to provide a greenhouse-mounted photovoltaic device using the above-mentioned push-rod type dual-axis photovoltaic tracking system, which can more effectively utilize idle land resources occupied by photovoltaic power generation equipment, for example, to facilitate Artificial or mechanized farming of crops.

According to the invention, the aforementioned task is solved by a push rod type two-axis photovoltaic tracking system according to the independent claim. Preferred embodiments and developments of the invention are defined in the dependent claims.

A pusher-type dual-axis photovoltaic tracking system according to the present invention includes a primary photovoltaic subsystem and one or more secondary photovoltaic subsystems disposed on at least one side of the primary photovoltaic subsystem, the primary photovoltaic subsystem and the secondary photovoltaic subsystem respectively included Liang Hangjia, in the office The top of the beam hanging frame is respectively installed with one or more solar panels, and the beam hanging frame has a rotating shaft arranged along the length direction of the beam hanging frame, so that the beam hanging frame can be perpendicular to the length of the beam hanging frame around the rotating axis Flipping in a first direction; the primary photovoltaic subsystem includes a push rod moving system, the push rod moving system including a motor and a first push rod disposed perpendicular to a length direction of the beam hanging frame, the first push rod respectively Connected to the main photovoltaic subsystem and the beam suspension frame of the photovoltaic subsystem through the push rod connecting piece, the motor is connected with the beam hanging frame through the transmission mechanism to make the main photovoltaic subsystem's beam hanging frame and beam hanging when the motor is running The longitudinal direction of the frame is reversed in a first direction, and the flipping of the beam in the first direction causes the first pusher to move in the first direction, and the movement of the first pusher in the first direction drives the photovoltaic subsystem The beam hanger is flipped in a first direction; the primary photovoltaic subsystem and the slave photovoltaic subsystem respectively include a second push rod disposed in a length direction of the beam hanger, the second push rod respectively Solar panel Wherein when the second push rod is pushed, the solar panel is connected to the second push rod is inverted in the second direction parallel to the longitudinal direction of the beam Hang frame.

The push rod type two-axis photovoltaic tracking system according to the present invention can track sunlight in the east-west direction, that is, perpendicular to the length direction of the beam hanging frame and in the north-south direction, that is, the length direction of the beam hanging frame, so that not only in each day of the day The sunlight is optimally tracked during the time period and under various terrains and various weather or climate or seasonal conditions. Moreover, the push rod type two-axis photovoltaic tracking system has a simple structure, and the push rod can be arranged at a higher position from the ground, so that a person or a machine can freely pass under the system, thereby making better use of the deployment site. become possible. Furthermore, since the push rod moving system is arranged at the central photovoltaic subsystem, ie at the main photovoltaic subsystem, rather than at the end of the photovoltaic subsystem, the torque required to rotate the solar panel of the photovoltaic subsystem at the end It is greatly reduced, so that the first pusher can have a lower strength material and a lower thickness, which reduces the cost and also reduces the probability of failure.

In a preferred embodiment of the invention, the transmission mechanism is a traction rope, and two ends of the traction rope are respectively fixed on the beam hanger close to both ends of the arc member, and the lower side of the traction rope Wrapped around the rotating shaft of the motor, the first push rod is coupled to a push rod connector mounted at the lower end of the arc member. The preferred solution has the advantage that the traction rope and the arc member are low in cost and simple in structure, and the presence of the arc member keeps the traction rope in a tension state at all times, avoiding slippage and increasing the reliability of the system.

In a further preferred embodiment of the invention, the transmission is provided as a chain, the two ends of the chain being fastened to the beam suspension and the lower side of the chain being wound around a motor having gears that can engage the chain on. Since the chain is tightly engaged with the gear of the motor, slippage can be avoided even if the arc member is omitted. The preferred solution is thus simple and reliable. In a preferred embodiment of the invention, it is provided that one or more axially semi-closed or fully closed bearing rings are arranged between the primary photovoltaic subsystem and the secondary photovoltaic subsystem and/or between the photovoltaic subsystems. The bearing ring is fixed on the interconnecting bar between the main photovoltaic subsystem and the slave photovoltaic subsystem or from the photovoltaic subsystem, and the first push rod passes through the bearing ring. Since the bearing ring is subjected to a part of the thrust of the first push rod, in particular the vertical component of the thrust, and the probability of the side bend of the push rod due to the force applied to both ends is greatly reduced, With the bearing ring, the first pusher can have lower material strength and thickness without bending, thereby further reducing costs. In the most preferred case, only one bearing ring is provided, which is centrally arranged between two adjacent photovoltaic subsystems. Of course, other numbers of bearing rings are also possible.

In a further development of the invention, it is provided that the first push rod is arranged at a height of 1.5 to 5 meters from the ground. The height of 1.5-5 meters ensures that people or machines, such as agricultural machinery and boats, can move freely under the PV tracking system. Of course, other heights are also conceivable.

In a further development of the invention, it is provided that the second push rod is connected to the solar panel by a connection to a struts at the bottom of the solar panel, the struts being rotatable in a second direction about the axis of rotation. This expansion ensures a simple and reliable actuation of the solar panel by the push rod.

In a preferred embodiment of the invention, it is provided that the first push rod is movably connected to the push rod connection and/or the push rod connection is movably connected to the beam stop. This preferred solution can reduce the movement of the first push rod in the vertical direction, thereby increasing the stability of the system.

In a preferred embodiment of the invention, the movable connection is made by rivets, pins, pivot connections, articulated or embedded Connected to achieve. Such active connections are low cost and safe.

A preferred application embodiment of the present invention provides a water photovoltaic device employing the above-described basic push rod type two-axis photovoltaic tracking system, the water photovoltaic device having at least one buoyancy member at the bottom, the buoyancy member for photovoltaic The panel remains above the water. Wherein, a preferred solution further has a heat dissipation system comprising: a fan, a heat sink connected to the fan, and a heat pipe connected to the heat sink, the heat pipe being connected below the water surface. Another preferred solution also has an anchor assembly or drawstring or other fastener for securing the water photovoltaic device in a suitable area on the water surface. Another preferred application embodiment of the present invention provides a greenhouse-covered photovoltaic device using the above-described basic push-rod type two-axis photovoltaic tracking system, further comprising a greenhouse bracket, the greenhouse bracket being fixed to the main photovoltaic The subsystem and/or the pillars included in the slave photovoltaic subsystem are covered with a covering material above the greenhouse bracket. In a preferred embodiment, the shed bracket is secured to the upright by a shed bracket connection. In another preferred aspect, the photovoltaic panel employs a double-sided photovoltaic panel, and at least a portion of the covering material is made of a material capable of reflecting light, or at least a portion of the surface of the covering material is coated with a light capable of reflecting light. s material.

DRAWINGS

The invention will be further elucidated with reference to the specific embodiments in conjunction with the accompanying drawings.

1 is a perspective view showing the overall structure of a first embodiment of a main photovoltaic subsystem of a push rod type two-axis photovoltaic tracking system according to the present invention;

Figure 2 is a partial enlarged view of the push rod moving system of the main photovoltaic subsystem of Figure 1;

Figure 3 shows a schematic view of a second embodiment of a putter moving system;

Figure 4 shows a schematic view of a third embodiment of a putter moving system;

Figure 5 shows an overall perspective view of a pusher-type dual-axis photovoltaic tracking system including a primary photovoltaic subsystem and a plurality of secondary photovoltaic subsystems in accordance with the present invention;

Figure 6 is a perspective view showing the overall structure of an embodiment of a main photovoltaic subsystem of a water photovoltaic device employing the push-rod type two-axis photovoltaic tracking system shown in Figure 1;

Figure 7 is a partially enlarged schematic view showing a first embodiment of the push rod moving system of the main photovoltaic subsystem shown in Figure 6;

Figure 8 is a schematic view showing a heat dissipation system of a water photovoltaic device using the pusher type two-axis photovoltaic tracking system shown in Figure 1;

Figure 9 shows an overall perspective view of a water photovoltaic device comprising a primary photovoltaic subsystem and a plurality of secondary photovoltaic subsystems in accordance with the present invention;

Figure 10 shows an overall perspective view of a water photovoltaic installation with fixed piles;

Figure 11 is a schematic view showing the overall structure of a greenhouse-covered photovoltaic device using the push-rod type dual-axis photovoltaic tracking system shown in Figure 1;

12A is a schematic view showing the connection of a single side of a column of a photovoltaic subsystem to a greenhouse bracket according to an embodiment of the greenhouse-covered photovoltaic device shown in FIG. 11;

12B is a schematic view showing the connection of the two sides of the column of the photovoltaic subsystem to the greenhouse bracket according to another embodiment of the greenhouse-covered photovoltaic device shown in FIG. 11;

13A, 13B are schematic views showing a pillar structure of a photovoltaic subsystem according to an embodiment of the greenhouse-covered photovoltaic device shown in FIG. 11;

14A, 14B show schematic views of a photovoltaic subsystem including a reinforcing rod in accordance with an embodiment of the greenhouse-covered photovoltaic device illustrated in FIG.

detailed description

1 shows a perspective view of the overall structure of a first embodiment of a primary photovoltaic subsystem 101 of a pusher-type dual-axis photovoltaic tracking system in accordance with the present invention, wherein the push-rod dual-axis photovoltaic tracking system 100 according to the present invention includes a Main photovoltaic subsystem 101 and a plurality of slave photovoltaic subsystems 102 (see FIG. 5) located on either side of the photovoltaic subsystem. Main photovoltaic subsystem 101 and a plurality of slave photovoltaic subsystems 102 and columns 112, lateral interconnecting bars 111 (see FIG. 3), axial interconnecting bars (not shown), on either side of primary photovoltaic subsystem 101, And the rotating shaft 115 forms a stable truss system. It should be noted that although the primary photovoltaic subsystem 101 of FIG. 1 is illustrated as a push rod movement system having a traction rope drive, this is merely one embodiment of the present invention, while in other embodiments, the push rod movement system may employ Other transmission methods, such as chain drive, rod drive, etc., will be described later.

As can be seen in FIG. 1, the primary photovoltaic subsystem 101 includes a beam hanger 103 on which one or more photovoltaic panels 104 are mounted. The beam hanging frame 103 has a rotating shaft 115 arranged along the longitudinal direction of the beam hanging frame 103, so that the beam hanging frame 103 can be turned around the rotating shaft 115 in a first direction A perpendicular to the longitudinal direction of the beam hanging frame, thereby driving the arrangement The photovoltaic panel 104 on the beam hanger 103 is flipped in a first direction A, wherein the first direction A can be east-west. The flipping of the beam stop 103 in the first direction is accomplished by a push rod movement system 105 that includes a transmission mechanism 109, which will be described in detail later in connection with FIG.

The beam hanger 103 is further disposed with a second push rod 110 parallel to the longitudinal direction of the beam hanger 103. The second push rod 110 is connected to a strut (not shown) of each photovoltaic panel 104, and each of the poles has a rotation axis perpendicular to the longitudinal direction of the beam hanger, such that when the second push rod 110 is pushed, each of the poles can rotate in a second direction B parallel to the longitudinal direction of the beam hanger, thereby driving each photovoltaic panel 104 The second direction B is reversed; the second direction B may be north-south direction. The beam hanging frame 103 can be a metal material, such as an aluminum alloy or a steel material or a plastic material, wherein the material of the beam hanging frame can be selected according to the weight requirement of the photovoltaic tracking system, and the weight requirement depends on the weight of the solar panel and Distance from the ground and so on. In a preferred embodiment, the beam hanger 103 is constructed of steel, such a heavier steel structure ensures that the entire photovoltaic tracking system remains stable during the push of the first push rod 107 (described later). Due to the heavier solar panels, the beam suspension is violently shaken. As can be seen from FIG. 1, each photovoltaic panel 104 of the main photovoltaic subsystem 101 can be flipped in the first direction A, that is, the east-west direction and the second direction B, that is, the north-south direction, which achieves better sunlight. Tracking, that is, the system can not only adapt to the changes of the sun's rays in the day, but also adapt to the difference of the north-south sun rays of different seasons, climates or topography. In a preferred embodiment, the photovoltaic tracking in the first direction A can be automatically performed by the putter moving system 105 based on weather, time, etc., while the photovoltaic tracking in the second direction B can be manually performed by pushing the second pusher. This is advantageous because, in general, the sun's rays change only frequently in the east-west direction, but only seasonally or regionally in the north-south direction, so no frequent adjustments are needed. In other embodiments, photovoltaic tracking on both directions A, B can be performed automatically.

2 shows a partial enlarged view of the putter moving system 105 of the primary photovoltaic subsystem 101 of FIG. In the present embodiment, the push rod movement system 105 is driven by a traction rope, but other implementations are also conceivable, such as chain drives, rod drives, and the like. The push rod moving system 105 includes a transmission 109 (which is used to transfer force from the motor 106 to the beam stop 103) in FIG. 2, and a circular arc member 114, wherein both ends of the traction rope 109' Either fixed to the arc member 114 (such as both ends of the arc member 114), and the arc member 114 is fixed to the beam hanger 103; or both ends of the traction rope 109' are close to both ends of the arc member 114. It is fixed on the beam hanger as long as the traction rope 109' is sufficiently close to the circular arc member 114 that the traction rope 109' can be wound onto the circular arc member 114 when the circular arc member 114 is turned over. Thus, the presence of the arc member 114 ensures that the leash 109' is always tensioned during the flipping of the girder 103, thereby avoiding slippage and improving system reliability. The arcuate member 114 can be a metal or plastic material. The push rod movement system 105 also includes a first push rod 107. Note that for the sake of clarity, the first push rod 107 is shown only in dashed lines (see Figure 3 for a detailed illustration thereof). The first push rod 107 is coupled to the push rod connector 108 fixed to the lower end of the circular arc member 114. The push rod connecting member 108 is, for example, a semi-enclosed or fully enclosed ring structure for supporting the first push rod, and the push rod connecting member 108 can be connected to the first push rod 107 by, for example, a nail to ensure that the circular arc member 114 is turned over. The first push rod 107 can be moved in the first direction. Of course, other connections are conceivable, such as welded connections, pivot connections, hinges, inlays, and the like. In a preferred embodiment, the push rod connector 108 is movably coupled to the first push rod 107, such as by a rivet or a tack, which reduces the vertical displacement of the first push rod 107, thereby enabling the first push Pole push The force is more stable because, in the case of a movable connection, when the circular arc member 114 is rotated by the traction rope 109', the first push rod 107 is movably connected to the push rod connecting member 108 during the movement, The vertical displacement is counteracted by its own weight, thereby reducing the vertical displacement of the first push rod 107 and increasing the stability of the system.

The operation of the putter moving system 105 is explained below. When the rotating shaft of the motor 106 rotates, the pulling rope 109' is pulled, and the pulling rope 109' pulls the entire beam hanging frame 103 of the main photovoltaic subsystem 101 about the rotating shaft 115 in a first direction perpendicular to the longitudinal direction of the beam hanging frame 103. A is flipped over so that all of the solar panels 105 on the beam stop 103 are flipped in the first direction A. At the same time, the inversion of the beam hanger 103 will drive the arc member 114 fixed on the beam hanger 103 to be reversed, and the inversion of the arc member 114 drives the first push rod 107 connected to the push rod connector 108 at the lower end thereof. Moving in the first direction A, the movement of the first push rod 107 in the first direction A further drives the beam hanging from the photovoltaic subsystem arranged on both sides of the main photovoltaic subsystem 101 (how to drive the first push rod 107) The flipping of the beam from the photovoltaic subsystem can be seen in Figure 3), so that all solar panels from the photovoltaic subsystem are flipped synchronously.

The advantages of this embodiment are: (1) since the push rod moving system 105 is arranged at the photovoltaic subsystem located in the middle of the photovoltaic device, rather than at the photovoltaic subsystem at the end of the photovoltaic device, such that it rotates with the end of the slave device Compared with each beam hanging frame, the force arm for rotating each beam frame from the middle is reduced by about half, so the torque required to rotate each beam frame (therefore rotating each solar panel) is greatly reduced, thereby making the first A pusher can use a lower strength material or a lower thickness, thereby reducing the cost and reducing the probability of failure; (2) the cost of the traction rope and the arc member is simple and simple, and the circle The presence of the arcing component keeps the traction rope in tension and avoids slippage, increasing the reliability of the system.

FIG. 3 shows a schematic diagram of a second embodiment of the putter moving system 105. In this embodiment, the push rod movement system 105 is a chain drive, that is, the transmission mechanism 109 is a chain 109" in this embodiment. One of the push rod type dual axis photovoltaic tracking systems 100 is shown in FIG. The main photovoltaic subsystem 101 and the slave photovoltaic subsystem 102 disposed on the right side thereof. It should be noted that the illustration is merely exemplary, and in other embodiments, one or both of the main photovoltaic subsystems 101 may be disposed on either side or A plurality of slave photovoltaic subsystems 102. The primary photovoltaic subsystem 101 has a push rod movement system 105 to drive the primary photovoltaic subsystem 101 and its solar panels 105 from the photovoltaic subsystem 102 to flip in a first direction A. The moving system 105 has a chain 109", both ends of which are fixedly coupled to the beam hanger 103. The lower side of the chain 109" passes through the rotating shaft of the motor and meshes with a gear (not shown) on the rotating shaft of the motor 106. . The first push rod 107 is connected, for example by a nail, to the push rod connection 108, for example, movably, and the push rod connection 108 is connected directly or indirectly through the connecting rod 116 to the beam stop 103. In the putter moving system 105 of FIG. 3, the primary photovoltaic subsystem 101 and the secondary photovoltaic subsystem 102 each include two connecting rods 116 or 116', but this is merely exemplary, and instead, the primary photovoltaic subsystem 101 and the slave The photovoltaic subsystem 102 may also include only one connecting rod 116 or 116' (see FIG. 4 for specific illustration) or may not include a connecting rod, in which case the push rod connector 108 is directly secured to the beam hanger 103.

The operation of the putter moving system 105 is explained below. When the rotating shaft of the motor 106 rotates, the chain 109" that meshes with the rotating shaft is driven, and the chain 109" further pulls the entire beam hanging frame 103 of the main photovoltaic subsystem 101 about the rotating shaft 115 perpendicular to the longitudinal direction of the beam hanging frame 103. The first direction A is flipped over so that all of the solar panels 105 on the beam stop 103 are flipped in the first direction A. At the same time, the flipping of the beam stop 103 and the first push rod 107 connected to the push rod connecting member 108 are moved in the first direction A, and the movement of the first push rod 107 in the first direction A is further driven to be arranged in the main direction. The beam hangers 103 of the photovoltaic subsystem 102 on both sides of the photovoltaic subsystem 101 (on the right in this figure) are flipped in a first direction A about the axis of rotation 115 such that all photovoltaic panels 104 from the photovoltaic subsystem 102 are Flip synchronously. Here, the push rod 107 is fixedly or movably connected to the push rod connection 108' from the photovoltaic subsystem 102, and the push rod connection 108' is in turn connected directly or indirectly through the connecting rod 116' to the slave photovoltaic subsystem 102. The beam hanging frame 103. An advantage of this embodiment is that since the chain is tightly engaged with the gear of the motor, slipping can be avoided even if the circular arc member is omitted, so the embodiment is simple and reliable in structure.

The above description shows that the transmission mechanism 109 of the push rod moving system 105 is a traction rope 109' and a chain 109", respectively, but the invention is not limited thereto, but can also be implemented in other ways, such as a rod transmission method, in which Through the horse Up to 106 drives the transmission rod to move, and the transmission rod directly pushes the beam suspension frame 103 to reverse, and the flipping of the beam suspension frame drives the first push rod to move in the first direction A, thereby driving each solar panel 105 in the first direction A. Flip up. Other means are also conceivable, such as gear transmission (where the rotating shaft of the motor drives the first gear, the first gear drives the second gear that meshes with it, the rotation of the second gear drives the beam to reverse) and the like.

Further, another preferred embodiment of the present invention, namely the bearing ring 113, is also shown in FIG. It should be noted here that although the preferred embodiment is illustrated with a chain drive, the preferred embodiment may be implemented separately or in combination with other embodiments. In FIG. 3, an interconnection rod 111 is connected between the main photovoltaic subsystem 101 and the slave photovoltaic subsystem 102, and a bearing ring 113 is fixed on the interconnection rod 111 directly or through a connecting rod, and the first push rod 107 is again Pass through the bearing ring 113. The axial direction of the bearing ring 113 may be semi-closed or fully closed as long as the first push rod 107 can be reliably supported. The advantage of the bearing ring 113 is that the bearing ring 113 bears a part of the thrust of the first push rod, especially the vertical component of the thrust, and greatly reduces the side bend of the push rod due to the thrust of both ends. Probability (because the presence of the bearing ring reduces the length of the section of the first push rod that is stressed), therefore, the first pusher can have lower material strength and thickness due to the bearing ring There is no failure, which further reduces costs. In this embodiment, only one bearing ring is disposed between the primary photovoltaic subsystem and the secondary photovoltaic subsystem, but it is also conceivable to provide a plurality of bearing rings between the two to further reduce the bending of the first push rod. The risk; in addition, it is also conceivable to provide one or more bearing rings between the two slave photovoltaic subsystems.

4 shows a schematic diagram of a third embodiment of the putter moving system 105, wherein the main difference between the preferred embodiment and the solution of FIG. 3 is that the primary photovoltaic subsystem 101 and the secondary photovoltaic subsystem 102 include only one connecting rod 116 or 116'. In this preferred embodiment, the upper end of the connecting rod 116 or 116' is fixed to the beam hanger 103, and the lower end is connected to the push rod connecting member 108 or 108', and the push rod connecting member 108 or 108' is further coupled to the first push rod 107. connection. In Figure 4, the connection of the connecting rod to the push rod connection and the connection of the push rod connection to the first push rod are both movably connected, for example, the three are connected by a pin. Through the movable connection, when the beam hanging frame 103 flips to drive the connecting rod 116 to reverse, the first push rod 107 movably connected to the connecting rod 116 moves in the A direction, and can reduce the vertical displacement due to its own gravity (in Ideally to maintain level), making the entire system more stable. An advantage of the preferred embodiment of Figure 4 is that the structure of the putter moving system 105 is simpler and the system is more stable.

FIG. 5 shows a perspective view of a pusher-type dual-axis photovoltaic tracking system 100 including a primary photovoltaic subsystem 101 and a plurality of secondary photovoltaic subsystems 102. In FIG. 5, the pusher-type dual-axis photovoltaic tracking system 100 includes a primary photovoltaic subsystem 101 disposed in the middle, and a respective secondary photovoltaic subsystem 102 disposed on either side of the primary photovoltaic subsystem 101. It should be noted, however, that the arrangement is merely exemplary, and in other embodiments, more than one slave photovoltaic subsystem 102 may be disposed on each side of the primary photovoltaic subsystem 101. In FIG. 5, each solar panel on the main photovoltaic subsystem 101 is flipped in a first direction by a push rod moving system, and at the same time, the first push rod is driven to push the photovoltaics disposed on both sides of the main photovoltaic subsystem 101. Each solar panel on subsystem 102 is flipped in a first direction. It can be seen that the push-rod type dual-axis photovoltaic tracking system 100 of the present invention has good scalability, can be used on a small scale or alone, and can be connected into a matrix for large-scale deployment, thereby better adapting to various applications.

6 shows a perspective view of the overall structure of one embodiment of a primary photovoltaic subsystem 101 of a marine photovoltaic device employing the push-rod dual-axis photovoltaic tracking system of FIG. 1, wherein the aquatic photovoltaic device 200 according to the present invention is fixed by The buoyancy member 125 at the bottom is held above the water surface (see Figure 9 for an overall schematic view). The structure of the push rod type dual-axis photovoltaic tracking system 100 has been described in detail in FIGS. 1-5, and details are not described herein again. A buoyancy member 125 is also shown in FIG. The buoyancy members 125 are respectively mounted at the bottom of the maritime photovoltaic device 200 employing a pusher-type dual-axis photovoltaic tracking system, for example, fixedly coupled to the post 112 of the main photovoltaic subsystem 101. In FIG. 6, although only one buoyancy member 125 is shown mounted at the bottom of the main photovoltaic subsystem 101, this is merely exemplary, and instead, each of the pillars 112 may be coupled to a buoyancy member 125, respectively, to form The buoyant member 125 is dotted (see Fig. 9). The point-like distribution of the buoyancy member 125 not only facilitates the passage of the vessel from the gap between two adjacent photovoltaic subsystems, but also facilitates the passage of the vessel between the two columns 112 of the same photovoltaic subsystem; The buoyancy member also reduces the resistance of the water. Buoyancy member 112 The buoyancy should be at least such that the photovoltaic panel 104 of the component subsystem can remain above the water surface. Among them, the material of Lianghang frame can be selected according to the weight requirement of the photovoltaic tracking system, and the weight requirement depends on the weight of the solar panel and its distance from the water surface. In Figure 6, the buoyancy of the buoyancy member is so large that most of the water photovoltaic device 200 is exposed to the surface. It should be noted that the rectangular shape of the buoyancy member depicted in the figures is merely illustrative. Conversely, the buoyancy member 125 may be other shapes, such as circular or elliptical, as long as the buoyancy member 125 can smoothly hold the water photovoltaic device 200. On the surface of the water, the photovoltaic panel 104 is exposed to the surface of the water. In addition, the individual

photovoltaic subsystems

101, 102 can be fixedly coupled to each other by interconnecting rods 111 (see FIG. 3) such that the individual photovoltaic subsystems are connected in a matrix to increase stability and prevent the photovoltaic subsystem from tipping over. The material of the buoyancy member may be foam, plastic or other low density material, or the buoyancy member may be a porous, loose or hollow member made of a non-low density material.

Figure 7 shows a partial enlarged schematic view of a first embodiment of the putter moving system 105 of the primary photovoltaic subsystem 101 shown in Figure 6. 7 differs from FIG. 2 in that FIG. 7 also shows a buoyancy member 125 mounted on a post 112 of the main photovoltaic subsystem 101 for maintaining the photovoltaic panel 104 of the main photovoltaic subsystem 101 on the surface. the above. In a preferred embodiment, the buoyancy of the buoyancy member 125 is so large that the complete post 112 is exposed to the surface of the water to ensure that the first push rod 107 and the beam stop 103 are sufficiently height from the water surface to facilitate passage of the vessel. For further details regarding the buoyancy member 125, please refer to the description above with respect to FIG. 6, which will not be described herein.

Figure 8 shows a schematic diagram of a heat dissipation system 118 for a water photovoltaic installation employing the pusher type dual axis photovoltaic tracking system of Figure 1. For the sake of clarity, only the photovoltaic panel 104 of the water photovoltaic device, the column 112, the buoyancy member 125 installed at each of the columns 112, and the heat dissipation system 118 are shown in FIG. 8 without the need for the beam hanging frame 103, pushing Other components such as rod movement system 105. The heat dissipation system 118 in turn includes a fan 119, a heat sink 120, a heat pipe 121, and a connector 122. A fan 119 is disposed adjacent the photovoltaic panel 104 for delivering cold air to the solar panel. The heat sink 120 is connected to the fan 119, for example, immediately after the fan 119; the heat sink 120 is used to cool the wind entering the fan 119 to ensure that the temperature of the wind blown by the fan 119 is low; the direction of the wind is shown in FIG. 124 and the direction of the exit 123. In this embodiment, the heat sink 120 is a metal piece, such as a copper piece. Such a heat sink has a simple structure, low cost, and low maintenance cost. However, in other embodiments, the heat sink 120 may also be other cooling devices, such as liquid. Cold equipment and so on. The heat sink 120 is connected to the heat pipe 121, and the heat pipe 121 is connected to the water surface 117. The heat pipe 121 is used to conduct heat in the heat sink 120 to the water. The depth of the heat pipe 121 extending below the water surface can be adjusted, for example, when the water surface temperature is high. The heat pipe can be extended deeper below the water surface to ensure better heat dissipation; the heat pipe 121 can also take other forms, such as a manifold in the form of a grid for cooling by air. Here, it is preferred to extend the heat pipe below the water surface because the water photovoltaic device itself operates on the water surface, and since the water has a higher specific heat capacity than the air, the water heat dissipation efficiency is higher. The heat pipe 121 is connected to the photovoltaic subsystem 101 via a connector 122 (note that the photovoltaic subsystem may be either the primary photovoltaic subsystem 101 or the secondary photovoltaic subsystem 102), for example, the pillars 112 of the primary photovoltaic subsystem 101. connection. It should be noted that the connector 122 in FIG. 8 is only one of the ways in which the heat dissipation system 118 is connected to the photovoltaic subsystem 101. The heat dissipation system 18 can also be connected to the photovoltaic subsystem by other means, such as soldering, bolting, and photovoltaic. The column 112 of the subsystem is integrally formed and the like. Through the heat dissipation system 118 of the present embodiment, the lower temperature of the photovoltaic panel 104 can be effectively ensured, thereby improving the photovoltaic conversion efficiency.

The embodiment of Figure 8 shows an embodiment in which each

photovoltaic subsystem

101 or 102 is equipped with a heat dissipation system 118, but it is also conceivable to equip each

photovoltaic subsystem

101 or 102 with a plurality of heat dissipation systems 118, in addition, it is also conceivable A single cooling system is provided for multiple or all photovoltaic subsystems. In the centralized heat dissipation scheme, the heat dissipation system structure is the same as that of the embodiment in FIG. 8, but has greater heat dissipation capability, such as higher cooling capacity of the heat sink 120 and greater wind power of the fan 119, and the heat dissipation. System 118 is mounted at a suitable location above photovoltaic panel 104 for cooling all photovoltaic panels 104.

FIG. 9 shows a perspective schematic view of a water photovoltaic device 200 including a primary photovoltaic subsystem 101 and a plurality of secondary photovoltaic subsystems 102. In FIG. 9, the onshore photovoltaic installation 200 includes a primary photovoltaic subsystem 101 disposed in the middle, and a respective secondary photovoltaic subsystem 102 disposed on either side of the primary photovoltaic subsystem 101. The difference between Figure 9 and Figure 5 is: Figure 9 A buoyancy member mounted on each of the main photovoltaic subsystem 101 and the slave photovoltaic subsystem 102 is shown, that is, the buoyancy member is dotted. As noted above, the point-like distribution of the buoyancy members can facilitate the navigability between the columns of the same photovoltaic subsystem. In addition, as can be seen from FIG. 9, since the beam-hanging frame of the respective

photovoltaic subsystems

101 and 102 and the height of the water surface of the first push rod are large, the vessel can pass between the two photovoltaic subsystems without barriers. This makes it possible to make better use of the water body in which the water photovoltaic device 200 is mounted, for example, aquaculture, and the like.

FIG. 10 shows an overall perspective view of a water photovoltaic device 200 having a fixture 701. The maritime photovoltaic installation 200 of FIG. 10 includes a primary photovoltaic subsystem 101 and five secondary photovoltaic subsystems 102. Different from FIG. 9, the water photovoltaic device 200 of FIG. 10 further includes four fixing members 701 disposed at four corners for fixing the water photovoltaic device 200 in a certain area on the water surface. It should be noted that the position and number of the fixing members 701 are arbitrarily set as needed, and the fixing member 701 may be disposed either on the shore or in the water. In addition, the water photovoltaic device 200 of FIG. 10 further includes a grid-like fixed net 702 composed of a plurality of intersecting fixing rods for fixing the respective

photovoltaic subsystems

101, 102 to each other, thereby increasing The water photovoltaic device 200 is resistant to wind and waves and prevents overturning.

Figure 11 shows an overall schematic view of a greenhouse-top photovoltaic device 300 employing the push-rod dual-axis photovoltaic tracking system of Figure 1. In order to make maximum use of the land resources, the technical solution selects the "seamless" connection between the greenhouse 316 and the photovoltaic tracking system 100, that is, the heater bracket 322 and the column 112 of the

photovoltaic subsystem

101 or 102 pass, for example, welding or riveting. The connections are fixed directly together. In FIG. 11, the greenhouse-covered photovoltaic device 300 proposed by the present application may include a plurality of photovoltaic subsystems (such as 101 or 102), and there is a certain space between adjacent two photovoltaic subsystems. In the embodiment shown in FIG. 11, the photovoltaic panel 104 is located above the warm shed 316, while the warm shed 316 occupies a space between the two adjacent photovoltaic subsystems below the photovoltaic panel 104. On the one hand, the greenhouse is close to the photovoltaic equipment to maximize the use of land resources; on the other hand, the greenhouse bracket also helps to improve the ability of photovoltaic equipment to resist lateral wind pressure. A cover material such as glass or film may be placed over the shed bracket.

Another embodiment of the present invention can further increase the overall power generation of photovoltaic device 300. In this embodiment, the photovoltaic panel 104 can employ a double-sided photovoltaic panel, that is, a photovoltaic panel is provided on the front and back of each photovoltaic panel 104. At the same time, at least a portion of the outer surface of the cover material over the greenhouse is coated with a material that reflects light, such as a metal or metal oxide; or at least a portion of the cover material is made of a material that reflects light. In this way, the light that the sun illuminates on the cover material can be reflected onto the photovoltaic panel located on the back side of the photovoltaic panel 104, thereby being further converted into electrical energy to increase the amount of power generated.

It will be understood by those skilled in the art that in order to allow the sunlight to illuminate the glazing cover material to the back of the photovoltaic panel 104 to the greatest extent, the shape of the shed roof is not limited to the traditional ridge shape, and it can be designed. Planar, curved, curved, or both. In short, it needs to be flexibly designed according to the actual local lighting conditions, so that the light reflected to the back of the photovoltaic panel can be more durable, and the reflection area is larger.

Those skilled in the art will also appreciate that in the preferred embodiment, the cover material on the roof or roof of the greenhouse can be designed to be movable, since the photovoltaic panel 104 is constantly tracking the sun's rays. Light rays that are incident on the cover material can be reflected to the back side of the photovoltaic panel 104 for a longer period of time. Alternatively, at least one movable window (not shown) may be provided on the roof to reflect light to the back of the photovoltaic panel 104 more permanently when the sunlight is applied to the covering material laid on the window surface. on. Of course, those skilled in the art will appreciate that the range of motion of such windows or covering materials can be controlled according to the specific range of motion of the local sunlight, as well as the flipping pattern of the photovoltaic panels, for example, using conventional mechanical mechanisms.

As can be seen from Figure 11, the roof portion of the greenhouse 316, i.e., the greenhouse bracket 322, is inclined relative to the ground, i.e., the greenhouse bracket 322 is at an angle to the ground. Those skilled in the art will appreciate that the greenhouse bracket 322 can be disposed parallel to the ground or be curved.

In Fig. 11, the shed brackets 322 located at the front and rear ends of the shed 316 are also provided with "[" shaped auxiliary struts 314. The auxiliary brace 314 can assist the warm baffle bracket 322 by means of the ground or the column 112 of the photovoltaic subsystem. use. Those skilled in the art will appreciate that even without these auxiliary struts, the warm shed can be fully constructed. The connection between the greenhouse bracket and the column of the photovoltaic subsystem will be described in detail in the following figures.

12A shows a schematic diagram of a single side of a column of a photovoltaic subsystem connected to a greenhouse bracket in accordance with one embodiment of a greenhouse-covered photovoltaic device in accordance with the present application. In one embodiment, the stud 112 of the photovoltaic subsystem is provided with a warm rack support connection 323 such that the post 112 can be fixedly coupled to the warm rack support 322 via the warm rack support connection 323. In the embodiment illustrated in FIG. 12A, the shed support location 323 can include at least two portions, wherein the first portion 324 can be fixedly coupled to the post 112 of the photovoltaic subsystem and the second portion 325 can be fixedly coupled to the shed support 322. The first portion 324 and the second portion 325 of the shed support position 323 may be integrally formed, or may be fixedly connected by, for example, welding.

In another embodiment, the first portion 324 of the shed support location 323 can be, for example, curved, and the post 112 can be brought into a snug connection by, for example, screws, welding, or the like. Wherein, the first portion 324 may completely or partially cover the surface of the corresponding portion of the pillar 112. The second portion 325 can be, for example, shaped like a hollow cylinder so that a shed bracket 322, such as a cylindrical shape, can be inserted into the second portion 325 (or the second portion 325 can be inserted into the shed bracket 322, At this time, the second portion 325 of the shed support position 323 may not be hollow). It will be understood by those skilled in the art that after the shed bracket 322 is inserted into the second portion 325 of the shed bracket connection position 323, those skilled in the art may or may not perform the shed bracket 322 and the shed bracket connection position 323. The second part 325 is further fixedly connected in other ways. Of course, the cross-section of the second portion 325 of the shed bracket connection location 323 and the shed bracket 322 may also be other shapes than circular.

In addition, it will be understood by those skilled in the art that the first portion 324 and the second portion 325 of the above-described shed support position 323 may also take other shapes or forms that enable the above objects. For example, the second portion 325 need not be, for example, cylindrical, but only presents, for example, a curved surface to enable it to support the shed bracket 322. Of course, when the second part adopts such a form, a person skilled in the art can decide whether to adopt a further fixing manner to achieve a fixed connection between the two according to actual conditions.

It can also be understood by those skilled in the art that the specific position of the shed support position 323 provided on the column 112 can be determined according to the actual situation such as the height of the column 112 and the shed, the inclination angle of the shed roof, and the topographical features. That is, the warm rack support connection position 323 provided on the column 112 may be far from the ground or may be closer to the ground.

Figure 12B shows a schematic view of the connection of the two sides of the column of the photovoltaic subsystem to the greenhouse bracket in accordance with another embodiment of the greenhouse-covered photovoltaic device of the present application. One of ordinary skill in the art will appreciate that the location, area, and shape of the greenhouse can be determined based on the actual conditions of the terrain, the specific layout of the photovoltaic power plant, and the like. That is, the warm shed can be disposed on one side or both sides of the photovoltaic subsystem, and the shed support connection position on the column of the photovoltaic subsystem can be connected to one or both sides of the shed support.

When both sides of the photovoltaic subsystem are provided with a warm shed, the column 112 may adopt two of the above-mentioned warm shed support joints 323 (or a double-sided warm shed support connection 326), for example, wherein the first portion is at least partially covered The arc-shaped shed bracket connection position of the corresponding part of the column is connected to the double-sided shed bracket.

In another embodiment, as shown in FIG. 12B, when the first portion 327 of the curved surface completely covers the surface of the corresponding portion of the column 112, the first portion 327 can be fixedly connected to the same side of the greenhouse bracket 322, respectively. The two second portions 328 are each fixedly connected as shown. The second portion 328 may be, for example, cylindrical, or may take other forms such as a curved surface that can support the shed bracket 322 or the like.

Those skilled in the art will appreciate that the positions of the two second portions 328 relative to the first portion 327 may be symmetrical or asymmetric. When the ground is undulating, the height and angle of the shed bracket 322 at different positions relative to the column 112 may vary. Thus, the second portion 328 that is coupled to the greenhouse bracket 322 can be flexibly disposed on the first portion 327 of the double side shed bracket attachment location 326 as desired. For example, the two second portions 328 may be flush or horizontal in the horizontal plane; and the angle between the two may be 180 degrees or greater or less than 180 degrees.

13A, 13B are schematic illustrations of a post 112 of a photovoltaic subsystem having a footrest structure in accordance with one embodiment of a greenhouse-top photovoltaic device in accordance with the present application. In order to further improve the ability of the photovoltaic system to resist lateral wind pressure, the present application also proposes to provide a triangular foot structure for the pillars 112 of the photovoltaic subsystem. In the embodiment shown in FIG. 13A, one or both sides of the uprights 112 may be provided with diagonal struts 334. In the embodiment shown in FIG. 13B, one or both sides of the bottom of the column 112 may be provided with a triangular support block 335.

14A, 14B show schematic views of a photovoltaic subsystem including a reinforcing rod in accordance with an embodiment of the present application. In one embodiment, the reinforcing rod 344 can be disposed on at least one side of the column 112 to strengthen the connection, so that the reinforcing rod 344, the column 112 and the greenhouse bracket 322 form a stable triangle, thereby further improving the photovoltaic. The stability of subsystems and greenhouses. One of ordinary skill in the art will appreciate that the reinforcing bar 344 can be disposed either external to the warm shed (as shown in Figure 14A) or internal to the warm shed (as shown in Figure 14B).

Although some embodiments of the invention have been described in the present application, it will be apparent to those skilled in the art that these embodiments are shown by way of example only. Numerous variations, alternatives and modifications will occur to those skilled in the art without departing from the scope of the invention. For example, the photovoltaic device using the push rod type dual-axis photovoltaic tracking system of the present invention can be installed not only on the water surface or on the agricultural greenhouse, but also on the roof, the wall surface, the hillside, the bridge, the sand, and the like. The scope of the invention is intended to be limited by the scope of the appended claims

Claims

A push rod type two-axis photovoltaic tracking system comprising a main photovoltaic subsystem (101) and one or more slave photovoltaic subsystems (102) disposed on at least one side of the main photovoltaic subsystem, the primary photovoltaic subsystem and the slave The photovoltaic subsystems respectively comprise a beam hanger (103) for mounting one or more photovoltaic panels, the beam hangers (103) having a rotational axis (115) arranged along the length of the beam hanger (103) such that The beam hanging frame (103) can be turned around the rotating shaft (115) in a first direction (A) perpendicular to the longitudinal direction of the beam hanging frame;

The primary photovoltaic subsystem (101) includes a push rod movement system (105) including a motor (106) and a first push rod disposed perpendicular to a length direction of the beam hanger (103) (107), the first push rod (107) is connected to the main photovoltaic subsystem (101) and the beam suspension (103) of the photovoltaic subsystem (102) through a push rod connection (108), respectively. (106) is coupled to the beam hanger (103) via a transmission mechanism (109) to flip the beam hanger (103) of the primary photovoltaic subsystem (101) in the first direction (A) while the motor (106) is operating, The flipping of the beam stop (103) in the first direction causes the first push rod (107) to move in the first direction, and the movement of the first push rod (107) in the first direction drives the photovoltaic subsystem (102). The beam hanger (103) is flipped in the first direction (A);

The primary photovoltaic subsystem (101) and the secondary photovoltaic subsystem (102) further include a second push rod (110) disposed in a length direction of the beam hanger (103), the second push rod (110) Connected to the photovoltaic panel (104) respectively, wherein when the second push rod (110) is pushed, the photovoltaic panel (104) connected to the second push rod (110) is connected to the beam hanger (103) The second direction (B) in which the longitudinal direction is parallel is inverted.
A pusher type biaxial photovoltaic tracking system according to claim 1, wherein said transmission mechanism (109) is a traction rope (109'), and both ends of said traction rope (109') are respectively associated with a circular arc member Both ends of (104) are fixedly fixed to the beam hanger (103), and the lower side of the traction rope (109') is wound on the rotating shaft of the motor, and the first push rod (107) is mounted on the arc The push rod connector (108) at the lower end of the component (114) is connected.
A pusher-type dual-axis photovoltaic tracking system according to claim 1, wherein said transmission mechanism (109) is a chain (109"), and both ends of said chain (109") are fixed to the beam hanger and The underside of the chain is wound on a motor having a gear that can engage the chain (109").
A pusher-type dual-axis photovoltaic tracking system according to any one of claims 1 to 3, characterized in that between the primary photovoltaic subsystem (101) and the secondary photovoltaic subsystem (102) and/or from the photovoltaic subsystem ( 102) arranging one or more axially semi-closed or fully enclosed bearing rings (113), the bearing ring (113) being fixed between the main photovoltaic subsystem (101) and the secondary photovoltaic subsystem (102) or from the interconnecting bar (111) between the photovoltaic subsystems (102), and the first pusher passes through the bearing ring (113).
A pusher-type two-axis photovoltaic tracking system according to any one of claims 1 to 3, characterized in that the first push rod (107) is arranged at a height of 1.5-5 meters from the ground.
The push rod type dual-axis photovoltaic tracking system according to any one of claims 1 to 3, characterized in that the second push rod (110) is connected to the solar panel by being connected to a strut located at the bottom of the photovoltaic panel (104). The struts are rotatable about the axis of rotation in the second direction (B).
A pusher-type dual-axis photovoltaic tracking system according to any one of claims 1 to 3, characterized in that the first push rod (107) is movably connected to the push rod connection (108), and/or the push rod connection ( 108) Actively connected to Lianghangjia (103).
The pusher type dual axis photovoltaic tracking system of claim 7 wherein said movable connection is achieved by rivets, pins, pivotal connections, hinges or engagement.
A photovoltaic device employing a push-rod dual-axis photovoltaic tracking system according to any of claims 1-3, characterized in that one or more photovoltaic panels are mounted on the beam hanger (103).
A photovoltaic device according to claim 9, characterized in that said photovoltaic device has at least one buoyancy member (125) at the bottom, said buoyancy member (125) for holding the photovoltaic panel (104) above the water surface.
The photovoltaic device of claim 10 further comprising a heat dissipation system (118), said heat dissipation system (118) The utility model comprises a fan (119), a radiator (120) connected to the fan (119), and a heat pipe (121) connected to the radiator (120), and the heat pipe (121) is connected below the water surface.
A photovoltaic device according to claim 10, further comprising an anchor assembly or a drawstring or fastener for securing said photovoltaic device in a suitable area on the surface of the water.
The photovoltaic device according to claim 9, further comprising a greenhouse bracket fixed to said main photovoltaic subsystem and/or said column included in said slave photovoltaic subsystem, and Covering material is placed above the shed bracket.
The photovoltaic device of claim 13 wherein said warm shed support is secured to said upright by a heated shed support.
A photovoltaic device according to claim 13 wherein said photovoltaic panel employs a double-sided photovoltaic panel and at least a portion of said cover material is made of a material capable of reflecting light, or at least a portion of said surface of said cover material It is coated with a material that reflects light.