Light following and protection type BIPV photovoltaic support system

Abstract

The invention belongs to the technical field of solar photovoltaic arrays, and provides a light following and protection type BIPV photovoltaic support system, which can adjust the inclination angle of a photovoltaic panel assembly according to setting so as to improve the maximum efficiency of photovoltaic power generation, and adopts the technical scheme that the light following and protection type BIPV photovoltaic support system comprises a support column, the photovoltaic panel assembly and an inclination angle adjusting mechanism, the photovoltaic panel assembly is installed on a roof surface through a plurality of supporting columns, the bottom ends of the supporting columns are fixedly installed on the roof surface, the top ends of the supporting columns are hinged to the top of the back face of the photovoltaic panel assembly, all the supporting columns comprise at least one main supporting column and a plurality of branch supporting columns, the main supporting column is a cylindrical hollow barrel, and an inclination angle adjusting mechanism is fixedly installed on the main supporting column. The inclination angle adjusting mechanism comprises a lifting device, a first ferrule and a first supporting rod, the first supporting rod, the stand column and the photovoltaic panel assembly form a triangle, the lifting height of the lifting device is controlled to drive the first ferrule to slide up and down along the stand column, and therefore inclination angle adjustment of the photovoltaic panel assembly is achieved.

Description

Technical Field

[0001] The present invention discloses a light-chasing and protective BIPV photovoltaic support system, which belongs to the technical field of solar photovoltaic arrays, and specifically relates to a high-efficiency power generation photovoltaic support system with a protective function. Background Art

[0002] With the gradual depletion of fossil energy, clean energy has gradually attracted people's attention. Since solar energy is an inexhaustible clean energy, solar photovoltaic power generation has developed rapidly. According to the scale of photovoltaic power generation, it can be divided into distributed photovoltaic and centralized photovoltaic. Among them, centralized photovoltaic power generation is large in scale and mainly connected to the grid; while distributed photovoltaic power generation is small in scale and has a low grid connection price. The investment is mainly for self-consumption. The amount of power generated for self-use is an important investment indicator. Places with large self-consumption of electricity include factories, hospitals, schools and other places. These places also have large flat roofs for the layout of photovoltaic arrays, which are ideal places for investment in photovoltaic power generation projects.

[0003] The installation inclination of the photovoltaic array has a great influence on the efficiency of the photovoltaic power generation system. Keeping the photovoltaic panels perpendicular to the sunlight as much as possible is the key to improving the utilization rate of solar energy and power generation efficiency. For the fixed installation of the concrete roof photovoltaic power station, the inclination angle is generally the angle at which the maximum solar radiation is received throughout the year, that is, the inclination angle when the photovoltaic system generates the maximum power throughout the year. In order to make full use of the existing roof area and make the entire photovoltaic system achieve the best power generation efficiency, while taking into account various factors such as economy and aesthetics, the concrete roof photovoltaic modules are mostly installed at a fixed inclination angle, which cannot achieve the maximum efficiency of the photovoltaic power generation system.

[0004] Moreover, during the long-term operation of flat roof photovoltaic power generation, the photovoltaic panels are easily damaged by rain and snow, and even need to be manually cleaned in time in heavy snow. Otherwise, it will affect the normal use of the photovoltaic power generation system and even cause damage to the photovoltaic panels. Summary of the invention

[0005] In order to solve one of the above-mentioned technical defects, the present invention provides a light-chasing and protection type BIPV photovoltaic support system, which can adjust the inclination angle of the photovoltaic panel assembly according to the setting, thereby improving the maximum efficiency of photovoltaic power generation.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a light-chasing and protection type BIPV photovoltaic support system, including a support column, a photovoltaic panel assembly and a tilt adjustment mechanism;

[0007] The photovoltaic panel assembly is installed on the roof surface through a plurality of pillars arranged in parallel;

[0008] The bottom end of the support column is fixedly mounted on the roof surface, and the top end of the support column is hinged to the top of the back side of the photovoltaic panel assembly;

[0009] All pillars include at least one main pillar and multiple sub-pillars;

[0010] The main support is a cylindrical hollow cylinder, and a tilt adjustment mechanism is fixedly installed on the main support;

[0011] The inclination adjustment mechanism includes a lifting device, a first ring and a first support rod. The lifting device is vertically fixed at the bottom of the cylinder body of the main pillar and the lifting direction is vertically upward. A connecting strip is fixedly installed on the top of the lifting device. The first ring is movably sleeved on the outer wall of the main pillar. Two guide groove through holes are vertically arranged in the middle of the cylinder wall of the main pillar. The two ends of the connecting strip extend from the two guide groove through holes to the outside of the main pillar and are fixedly connected to the inner wall of the first ring. One end of the first support rod is hinged on the first ring and the other end is hinged to the vertical middle of the back side of the photovoltaic panel assembly.

[0012] A second collar is movably sleeved on the outer wall of the branch pillar, the second collar is hinged to one end of the second support rod, and the other end of the second support rod is hinged to the vertical middle part of the back side of the photovoltaic panel assembly.

[0013] The inner walls of the first and second rings are provided with a plurality of ball grooves, and sliding balls are movably embedded in the ball grooves. The volume of the sliding balls exposed from the ball grooves is less than / of the volume of the sliding balls, and all the sliding balls are in contact with and connected to the outer walls of the pillars where they are located.

[0014] A rain and snow canopy protection assembly is fixedly installed above the photovoltaic panel assembly. The rain and snow canopy protection assembly includes an inverted V-plate and connecting rods. The inverted V-plate opens toward the photovoltaic panel assembly and is fixedly connected to the top frame of the photovoltaic panel assembly through multiple connecting rods.

[0015] The top frame buckle of the photovoltaic panel assembly is equipped with a plurality of U-shaped buckles, and tightening bolts are installed on the two side plates of the U-shaped buckles, and all the connecting rods are fixedly connected to the corresponding U-shaped buckles.

[0016] A pusher is fixedly installed at the middle of the branch pillar. The pusher is a micro airbag or a micro cylinder. The pusher corresponds to the bottom frame of the photovoltaic panel assembly and extends in a direction toward the photovoltaic panel assembly.

[0017] The inverted V-plate is made of transparent PVC material.

[0018] The lifting device is a cylinder lifting mechanism, or an oil cylinder lifting mechanism, or a motor-driven gear rack mechanism, or a motor-driven screw mechanism.

[0019] The photovoltaic panel assembly is fixedly mounted on a rotating assembly through a plurality of pillars arranged in parallel, and the rotating assembly is fixedly mounted on the roof surface;

[0020] The top end of the sealing guide cylinder is a cylindrical structure open at the top and bottom, and the bottom end of the sealing guide cylinder is integrally formed with the top end of the middle cylindrical cone of the lower seat box, and the sealing guide cylinder is movably sleeved on the inner wall of the middle cylindrical cone of the upper seat box, and a rotating mechanism is fixedly installed on the inner bottom surface of the lower seat box, and a cylinder body of a short-stroke cylinder is fixedly installed on the top of the rotating mechanism, and a piston rod of the short-stroke cylinder is vertically upward and the top end is fixedly connected with the inner top surface of the upper seat box. The extension and contraction of the short-stroke cylinder drives the upper seat box to move up and down in a short range, and the rotating mechanism drives the upper box seat to rotate around the axis, and the top surface of the cuboid side wing of the lower seat box is in contact with the bottom surface of the cuboid side wing on the corresponding side of the upper seat box.

[0021] The bottom of the main support is fixed on the outer top surface of the truncated cone of the upper seat box, and the bottoms of the plurality of branch supports are respectively fixed on the top surfaces of the cuboid side wings of the upper seat box.

[0022] The cuboid side wings of the lower seat box and the cuboid side wings of the corresponding sides of the upper seat box are provided with corresponding matching grooves and convex blocks.

[0023] By adopting the light-chasing and protective BIPV photovoltaic support system provided by the present invention, the inclination angle of the photovoltaic panel assembly can be adjusted by controlling the lifting device, thereby improving the maximum efficiency of photovoltaic power generation. By arranging the rain and snow protection assembly, the photovoltaic panel assembly in the retracted state can be protected in rainy and snowy weather, thereby avoiding damage to the photovoltaic panel assembly, reducing the maintenance frequency of the photovoltaic panel assembly and increasing its service life.

[0024] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the contents pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the side cross-sectional structure of the main support in the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the main support in the present invention from top view;

[0029] Figure 4 It is a schematic diagram of the side structure of the main support in the working state of the present invention;

[0030] Figure 5 It is a schematic diagram of the top view of the rotating assembly in the present invention;

[0031] Figure 6 It is a schematic diagram of the working state of the rotating assembly in the present invention;

[0032] Figure 7 It is a schematic diagram of the internal structure of the truncated cone of the upper seat box and the lower seat box of the rotating assembly in the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] like Figure 1-4 As shown, the present invention provides a light-chasing and protection type BIPV photovoltaic support system, including a support column 1, a photovoltaic panel assembly 2 and a tilt adjustment mechanism;

[0035] The photovoltaic panel assembly 2 is installed on the roof surface through a plurality of pillars 1 arranged in parallel;

[0036] The bottom end of the support 1 is fixedly mounted on the roof surface, and the top end of the support 1 is hinged to the top of the back side of the photovoltaic panel assembly 2;

[0037] All pillars 1 include at least one main pillar 11 and a plurality of sub-pillars 12;

[0038] The main support 11 is a cylindrical hollow cylinder, and a tilt adjustment mechanism is fixedly installed on the main support 11;

[0039] The inclination adjustment mechanism includes a lifting device 3, a first ring 4 and a first support rod 5. The lifting device 3 is vertically fixed at the bottom of the cylinder of the main pillar 11 and the lifting direction is vertically upward. A connecting strip 6 is fixedly installed on the top of the lifting device 3. The first ring 4 is movably sleeved on the outer wall of the main pillar 11. Two guide groove through holes 7 are vertically arranged in the middle of the cylinder wall of the main pillar 11. The two ends of the connecting strip 6 extend from the two guide groove through holes 7 to the outside of the main pillar 11 and are fixedly connected to the inner wall of the first ring 4. One end of the first support rod 5 is hinged on the first ring 4 and the other end thereof is hinged to the vertical middle of the back side of the photovoltaic panel assembly 2.

[0040] The lifting device 3 is a cylinder lifting mechanism, or an oil cylinder lifting mechanism, or a motor-driven gear rack mechanism, or a motor-driven screw mechanism. The function of the lifting device 3 is to drive the first ring 4 to move up and down along the main support 11 by driving the connecting strip 6. The cylinder lifting mechanism, the oil cylinder lifting mechanism, the motor-driven gear rack mechanism, the motor-driven screw mechanism, etc. can all be directly applied to the present invention. They are prior art, and the specific structure is not described in detail in this application. The lifting height of the lifting device 3 is controlled by the main system, and the main system sets the inclination angle change of the photovoltaic panel assembly 2 in one day in advance according to the local sunshine environment and sunshine rules.

[0041] In the present invention, a plurality of pillars 1 are used to position and install the photovoltaic panel assembly 2. The first support rod 5 on the main pillar 11 forms a triangle with the column 11 and the photovoltaic panel assembly 2. By controlling the lifting height of the lifting device 3, it drives the connecting strips 6 to rise and fall, and then drives the first ring 4 connected to it to slide up and down along the main pillar 11, and then adjusts the length of one side of the formed triangle, thereby realizing the inclination adjustment of the photovoltaic panel assembly 2. The inclination adjustment of the photovoltaic panel assembly 2 is set according to the local sunshine environment during the day, thereby improving the maximum efficiency of photovoltaic power generation. At the same time, the photovoltaic panel assembly 2 is retracted in rainy and snowy weather to avoid affecting its normal operation or even damage due to large-scale rain and snow impact and pressure.

[0042] A second collar 8 is movably mounted on the outer wall of the branch pillar 12 . The second collar 8 is hinged to one end of a second support rod 9 , and the other end of the second support rod 9 is hinged to the vertical middle portion of the back side of the photovoltaic panel assembly 2 .

[0043] The inner walls of the first ring 4 and the second ring 8 are provided with a plurality of ball grooves and sliding balls 10 are movably embedded in the ball grooves. The volume of the sliding balls 10 exposed from the ball grooves is less than 1 / 2 of the volume of the sliding balls 10. All the sliding balls 10 are in contact with and connected to the outer walls of the pillars 1 where they are located. The sliding balls 10 make it smoother for the rings to slide up and down on the pillars.

[0044] A rain and snow canopy protection component is fixedly installed above the photovoltaic panel assembly 2. The rain and snow canopy protection component includes an inverted V-plate 13 and a connecting rod 14. The inverted V-plate 13 opens toward the photovoltaic panel assembly 2 and is fixedly connected to the top frame of the photovoltaic panel assembly 2 through a plurality of connecting rods 14. In rainy and snowy weather, the photovoltaic panel assembly 2 can be controlled to be retracted. Figure 1-2As shown, the photovoltaic panel assembly 2 is completely located below the inverted V-plate 13, preventing dust, rain, and snow from damaging the photovoltaic panel assembly 2, increasing the service life of the photovoltaic panel assembly 2, and reducing the maintenance frequency of the photovoltaic panel assembly. Compared with the traditional photovoltaic panel installation method, due to the shielding of the photovoltaic panel assembly 2 by the rain and snow canopy protection assembly, snow will not accumulate on the surface of the photovoltaic panel. Even if there is accumulation, it will easily fall off when the photovoltaic panel assembly 2 is adjusted to a vertical position, eliminating the influence of the photovoltaic panel on the absorption of solar energy during the snow melting period. When the photovoltaic panel assembly is manually cleaned and maintained regularly, the photovoltaic panel assembly can be placed vertically to leave a walking passage, and the vertical photovoltaic panel is also easier to clean. When the photovoltaic panel assembly 2 is in normal sunshine weather and flips at an angle to absorb solar energy, the inverted V-plate 13 flips accordingly to reduce the shielding of the photovoltaic panel assembly 2.

[0045] The top frame buckle of the photovoltaic panel assembly 2 is equipped with multiple U-shaped buckles 15, and tightening bolts 16 are installed on the two side plates of the U-shaped buckle 15. All connecting rods 14 are fixedly connected to the corresponding U-shaped buckles 15 respectively. The disassembly and installation of the inverted V-plate 13 are achieved by tightening the bolts 16 and the U-shaped buckle 15, which facilitates the maintenance, cleaning and replacement of the inverted V-plate 13.

[0046] A pusher 17 is fixedly installed in the middle of the branch pillar 12. The pusher 17 is a micro airbag or a micro cylinder. The pusher 17 corresponds to the bottom frame of the photovoltaic panel assembly 2 and extends in a direction toward the photovoltaic panel assembly 2. When the lifting device 3 is started to control the photovoltaic panel assembly 2 to start flipping, the pusher 1 first pushes the photovoltaic panel assembly 1 to form a micro angle, thereby making the inclination of the photovoltaic panel assembly 2 smoother.

[0047] The inverted V-plate 13 is made of transparent PVC material, which further avoids blocking light and affecting the power generation efficiency of the photovoltaic panel assembly 2.

[0048] In order to further improve the tilt angle range adjustment of the photovoltaic panel assembly 2, the photovoltaic panel assembly 2 is fixedly mounted on a rotating assembly 18 through a plurality of pillars 1 arranged in parallel, and the rotating assembly 18 is fixedly mounted on the roof surface;

[0049] like Figure 5-7As shown, the rotating assembly 18 includes a lower seat box 181, an upper seat box 182, a rotating mechanism 183 and a short-stroke cylinder 185. The lower seat box 181 and the upper seat box 182 are both hollow box structures with truncated cones and rectangular side wings on both sides. The bottom end of the middle truncated cone of the upper seat box 182 is open, and the top end of the middle truncated cone of the lower seat box 11 is open and fixedly connected with a sealing guide cylinder 184. The sealing guide cylinder 184 is a cylindrical structure with upper and lower openings. The bottom end of the sealing guide cylinder 184 is integrally formed with the top end of the middle truncated cone of the lower seat box 11, and the sealing guide cylinder 184 is movably sleeved on the inner wall of the middle truncated cone of the upper seat box 182. A rotating mechanism 183 is fixedly installed on the inner bottom surface, and a cylinder body of a short-stroke cylinder 185 is fixedly installed on the top of the rotating mechanism 183. The piston rod of the short-stroke cylinder 185 is vertically upward and the top end is fixedly connected to the inner top surface of the upper seat box 182. The extension and retraction of the short-stroke cylinder 185 drives the upper seat box 182 to move up and down in a short distance, and the rotating mechanism 183 drives the upper box seat 182 to rotate around the axis. The short-stroke cylinder 185 and the rotating mechanism 183 are both existing structures, and their specific structures are not described in detail in this application. The top surface of the cuboid side wing of the lower seat box 181 and the bottom surface of the cuboid side wing on the corresponding side of the upper seat box 182 are in contact with each other;

[0050] The bottom of the main support 11 is fixed to the outer top surface of the truncated cone of the upper seat box 182 , and the bottoms of the plurality of branch supports 12 are respectively fixed to the top surfaces of the cuboid side wings of the upper seat box 182 .

[0051] The rectangular side wings of the lower seat box 181 and the rectangular side wings of the corresponding sides of the upper seat box 182 are provided with corresponding matching grooves and protrusions on the fitting surfaces, and the grooves and protrusions on both sides are symmetrically arranged, that is, the grooves on the upper box seat 182 can be respectively embedded with the two protrusions of the lower box seat 181 in the two states of rotation in place, so as to realize the matching positioning before and after rotation, and can also disperse the rotational pressure applied to the rotating mechanism 182 by the outside through the entire equipment.

[0052] Taking the morning and afternoon sunshine in this area as an example, in the morning, the system sets the photovoltaic panel assembly 2 to face the sunrise direction, and continuously adjusts the inclination of the photovoltaic panel assembly 2 through the inclination adjustment mechanism during the morning period to achieve the maximum efficiency of photovoltaic power generation; and when it reaches the afternoon period, according to the system setting, the short-stroke cylinder 185 is extended to make the upper box seat 182 drive the pillar 1 and the photovoltaic panel assembly 2 to rise a short distance, so that the grooves and protrusions embedded together are separated, and the rising height does not exceed the height of the sealing guide cylinder 184, so as to prevent the frustum of the upper box seat 182 from detaching from the sealing guide cylinder 184, and then the rotating mechanism 183 rotates 180°, and at the same time drives the entire photovoltaic panel assembly 2 to rotate 180° around the vertical axis, so that the photovoltaic panel assembly 2 faces the sunset direction, and then the piston rod of the short-stroke cylinder 185 is retracted, so that the corresponding grooves and protrusions on the side wings of the cuboid are matched and embedded, and then according to the sunshine conditions in the afternoon period, the inclination of the photovoltaic panel assembly 2 is continuously adjusted through the inclination adjustment mechanism.

[0053] The present invention can keep the photovoltaic panel assembly 2 as vertical as possible to the sunlight during the entire daytime through the tilt adjustment mechanism and the rotating assembly 18, thereby greatly improving the utilization rate of solar energy and the power generation efficiency.

[0054] The tilt adjustment mechanism, the rain and snow canopy protection assembly, the angle pusher 17 and the rotating assembly 18 in the present invention are all automatically controlled by the entire photovoltaic system.

[0055] The photovoltaic system's various instructions to the inclination adjustment mechanism and the rotating component 18 can be fixedly set according to different local seasons and different time periods. The inclination adjustment mechanism and the rotating component 18 can perform time-phase adjustment actions according to the system setting instructions. The sunshine detection system equipment can also be used to conduct real-time monitoring and feedback to the photovoltaic system, and then the photovoltaic system will issue action instructions to the inclination adjustment mechanism and the rotating component 18 after analysis. The sunshine detection system equipment is an existing technical equipment, and its structure and system steps are not specifically described in this application.

[0056] When there is rain or snow, in order to protect the photovoltaic panel assembly 2, the photovoltaic system can be manually operated to command the tilt adjustment mechanism to adjust the photovoltaic panel assembly to the following Figure 2 In the state shown, the rain and snow canopy protection assembly can cover and protect the photovoltaic panel assembly 2, and a weather monitoring device can also be set on the roof surface, and then feedback is given to the photovoltaic system, and then the photovoltaic system analyzes and sends an action instruction to the tilt adjustment mechanism. The weather monitoring equipment is an existing technical equipment, and its structure and system steps are not specifically described in this application.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0061] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A light-chasing and protective BIPV photovoltaic support system, characterized in that: It comprises a support column (1), a photovoltaic panel assembly (2) and a tilt adjustment mechanism; The photovoltaic panel assembly (2) is installed on the roof surface via a plurality of pillars (1) arranged in parallel; The bottom end of the support (1) is fixedly mounted on the roof surface, and the top end of the support (1) is hinged to the top of the back side of the photovoltaic panel assembly (2); All pillars (1) include at least one main pillar (11) and a plurality of sub-pillars (12); The main support (11) is a cylindrical hollow cylinder, and a tilt adjustment mechanism is fixedly installed on the main support (11); The tilt adjustment mechanism comprises a lifting device (3), a first collar (4) and a first support rod (5); the lifting device (3) is vertically fixed to the bottom of the cylinder body of the main support (11) and the lifting direction is vertically upward; a connecting strip (6) is fixedly installed on the top of the lifting device (3); the first collar (4) is movably sleeved on the outer wall of the main support (11); two guide slot through holes (7) are vertically arranged in the middle of the cylinder wall of the main support (11); the two ends of the connecting strip (6) respectively extend from the two guide slot through holes (7) to the outside of the main support (11) and are fixedly connected to the inner wall of the first collar (4); one end of the first support rod (5) is hinged to the first collar (4) and the other end thereof is hinged to the vertical middle of the back of the photovoltaic panel assembly (2).

2. The light-chasing and protection BIPV photovoltaic support system according to claim 1, characterized in that: A second ring (8) is movably mounted on the outer wall of the branch pillar (12), the second ring (8) is hinged to one end of the second support rod (9), and the other end of the second support rod (9) is hinged to the vertical middle part of the back side of the photovoltaic panel assembly (2).

3. A light-chasing and protection BIPV photovoltaic support system according to claim 2, characterized in that: The inner walls of the first ring (4) and the second ring (8) are provided with a plurality of ball grooves, and sliding balls (10) are movably embedded in the ball grooves. The volume of the sliding balls (10) exposed from the ball grooves is less than (1) / (2) of the volume of the sliding balls (10), and all the sliding balls (10) are in contact and connected with the outer walls of the pillars (1) where they are located.

4. A light-chasing and protection BIPV photovoltaic support system according to any one of claims 1 to 3, characterized in that: A rain and snow canopy protection assembly is fixedly installed above the photovoltaic panel assembly (2), and the rain and snow canopy protection assembly comprises an inverted V-plate (13) and a connecting rod (14). The inverted V-plate (13) opens toward the photovoltaic panel assembly (2) and is fixedly connected to the top frame of the photovoltaic panel assembly (2) via a plurality of connecting rods (14).

5. The light-chasing and protection BIPV photovoltaic support system according to claim 4 is characterized in that: The top frame buckle of the photovoltaic panel assembly (2) is equipped with a plurality of U-shaped buckles (15), and tightening bolts (16) are installed on the two side plates of the U-shaped buckle (15), and all the connecting rods (14) are fixedly connected to the corresponding U-shaped buckles (15).

6. The light-chasing and protection BIPV photovoltaic support system according to claim 5, characterized in that: A pusher (17) is fixedly installed in the middle of the branch pillar (12). The pusher (17) is a micro airbag or a micro cylinder. The pusher (17) corresponds to the bottom frame of the photovoltaic panel assembly (2) and extends in a direction toward the photovoltaic panel assembly (2).

7. The light-chasing and protection BIPV photovoltaic support system according to claim 4, characterized in that: The inverted V-plate (13) is made of transparent PVC material.

8. The light-chasing and protection BIPV photovoltaic support system according to claim 1, characterized in that: The lifting device (3) is a cylinder lifting mechanism, or an oil cylinder lifting mechanism, or a motor-driven gear rack mechanism, or a motor-driven screw mechanism.

9. The light-chasing and protection BIPV photovoltaic support system according to claim 5, characterized in that: The photovoltaic panel assembly (2) is fixedly mounted on a rotating assembly (18) via a plurality of pillars (1) arranged in parallel, and the rotating assembly (18) is fixedly mounted on a roof surface; The rotating assembly (18) comprises a lower seat box (181), an upper seat box (182), a rotating mechanism (183) and a short-stroke cylinder (185). The lower seat box (181) and the upper seat box (182) are both hollow box structures with truncated cones and rectangular side wings on both sides. The bottom end of the middle truncated cone of the upper seat box (182) is open, and the top end of the middle truncated cone of the lower seat box (11) is open and fixedly connected with a sealing guide cylinder (184). The sealing guide cylinder (184) is a cylindrical structure with upper and lower openings. The bottom end of the sealing guide cylinder (184) is integrally formed with the top end of the middle truncated cone of the lower seat box (11), and the sealing guide cylinder (184) is movably sleeved on the truncated cone. A rotating mechanism (183) is fixedly installed on the inner wall of the middle truncated cone of the upper seat box (182) and the inner bottom surface of the lower seat box (181). A cylinder body of a short-stroke cylinder (185) is fixedly installed on the top of the rotating mechanism (183). The piston rod of the short-stroke cylinder (185) is vertically upward and the top end is fixedly connected to the inner top surface of the upper seat box (182). The extension and retraction of the short-stroke cylinder (185) drives the upper seat box (182) to move up and down in a short distance. The rotating mechanism (183) drives the upper box seat (182) to rotate around the axis. The top surface of the cuboid side wing of the lower seat box (181) and the bottom surface of the cuboid side wing of the corresponding side of the upper seat box (182) are in close contact. The bottom of the main support (11) is fixed to the outer top surface of the truncated cone of the upper seat box (182), and the bottoms of the plurality of branch supports (12) are respectively fixed to the top surfaces of the cuboid side wings of the upper seat box (182).

10. The light-chasing and protection BIPV photovoltaic support system according to claim 5, characterized in that: The cuboid side wings of the lower seat box (181) and the cuboid side wing fitting surfaces on the corresponding sides of the upper seat box (182) are provided with correspondingly matched protrusions and grooves.

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