Pressure-driven Automatic Tracking Device for Solar Photovoltaic Panels

Abstract

The present invention relates to a pressure-driven automatic tracking device for a solar photovoltaic panel, which comprises: a photovoltaic panel, a rotating shaft, a runner, a transmission component, a first counterweight, a second counterweight, a corrugated pipe and an inflation mechanism. The photovoltaic panel is fixed to the rotating shaft, the runner is fixedly arranged on the rotating shaft, a transmission component is arranged on the runner, the two ends of the transmission component are respectively connected with the first counterweight and the second counterweight, the first counterweight is connected with the end face of the corrugated pipe, the corrugated pipe is connected with the inflation mechanism, the inflation amount of the corrugated pipe is adjusted through the inflation mechanism to enable the corrugated pipe to expand and contract, and further enable the first counterweight connected with the end face of the corrugated pipe to move in the vertical direction, thereby driving the runner to rotate and realizing the automatic tracking of the photovoltaic panel to sunlight.

Description

Technical Field

[0001] The present invention relates to the field of solar photovoltaic technology applications, and particularly to a pressure-driven automatic tracking device for solar photovoltaic panels. Background Art

[0002] Facing energy security, environmental pollution and climate change, vigorously developing solar photovoltaic power generation technology is an important path to build a clean, low-carbon, safe and efficient energy system in China. With the continuous development and popularization of photovoltaic power generation technology, it is necessary to further improve the conversion efficiency of photovoltaic power generation. On the one hand, new photovoltaic conversion technologies need to be developed, and on the other hand, the light utilization rate needs to be increased. By adjusting the light-receiving angle of the photovoltaic power generation components of the photovoltaic panel in real time and tracking the movement of sunlight as much as possible, the power generation capacity can be improved.

[0003] For solar photovoltaic panel real-time tracking devices, photosensitivity, thermosensitivity drive and mechanical control devices have been developed. The existing photovoltaic panel tracking devices generally include a rotating shaft, a photovoltaic panel, a driving motor and a speed reduction mechanism. The photovoltaic panel is arranged on the rotating shaft, and the driving motor drives the rotating shaft to rotate through the speed reduction mechanism, thereby driving the photovoltaic panel to rotate and realizing automatic tracking of sunlight. Since the photovoltaic panel only needs to rotate 80 degrees to 120 degrees during a day, the angular velocity of rotation is very small, so the speed reduction mechanism needs to have a relatively large reduction ratio; since it is difficult to achieve ultra-low uniform rotation, the photovoltaic panel is generally controlled intermittently, and the photovoltaic panel is adjusted by an angle every once in a while. In this way, the light energy utilization rate is low; since it is intermittent control, the driving motor needs to be started frequently, and the working current of the driving motor is large during instantaneous start-up, and the instantaneous input power and the impact on the motor are large, which affects the working life of the motor, and at the same time, the hardware resources of the drive system are also wasted; the motor-speed reduction mechanism operates in a windy, rainy and sandy environment for a long time, and the failure rate is relatively high. These all limit the commercial promotion and use of the photovoltaic panel automatic tracking device. Summary of the Invention

[0004] In summary, it is indeed necessary to provide a pressure-driven automatic tracking device for solar photovoltaic panels in which the photovoltaic panel can rotate uniformly and the driving power is relatively low.

[0005] A pressure-driven automatic tracking device for solar photovoltaic panels, comprising: a photovoltaic panel, a rotating shaft, a runner, a transmission component, a first balance weight, a second balance weight, a corrugated pipe, and an air inflation mechanism. The photovoltaic panel is fixed to the rotating shaft, the runner is fixedly arranged on the rotating shaft, a transmission component is arranged on the runner, the two ends of the transmission component are respectively connected with the first balance weight and the second balance weight, the first balance weight is connected to the end face of the corrugated pipe, the corrugated pipe is connected to the air inflation mechanism, and the air inflation amount of the corrugated pipe is adjusted through the air inflation mechanism to enable the corrugated pipe to expand and contract, so that the first balance weight connected to the end face of the corrugated pipe moves in the vertical direction, thereby driving the runner to rotate and realizing automatic tracking of the photovoltaic panel for sunlight.

[0006] Compared with the prior art, in the pressure-driven automatic tracking device for solar photovoltaic panels of the present invention, by applying the inflation and deflation of the gas in the corrugated pipe, the photovoltaic panel can be controlled to rotate at a constant speed without interruption, realizing automatic tracking of the photovoltaic panel for sunlight. Therefore, the light energy utilization rate is relatively high, and the structure of the device is simple, and the power consumption of the required two-way air inflation pump is extremely low, so the driving power of the two-way air inflation pump is very low. Description of the Drawings

[0007] Figure 1 It is a schematic diagram of the front view structure of the pressure-driven automatic tracking device for solar photovoltaic panels provided by the embodiment of the present invention.

[0008] Figure 2 It is a schematic diagram of the left view structure of the pressure-driven automatic tracking device for solar photovoltaic panels provided by the embodiment of the present invention.

[0009] Figure 3 It is a schematic diagram of the structure of the pressure-driven automatic tracking device for solar photovoltaic panels with an anti-vibration mechanism provided by the embodiment of the present invention.

[0010] Figure 4 It is a schematic diagram of another structure of the pressure-driven automatic tracking device for solar photovoltaic panels with an anti-vibration mechanism provided by the embodiment of the present invention.

[0011] Description of the Main Component Symbols

[0012] Photovoltaic panel 1

[0013] First balance weight 2

[0014] Corrugated pipe 3

[0015] Air duct 4

[0016] Two-way air inflation pump 5

[0017] Second balance weight 6

[0018] Transmission component 7

[0019] Rotating wheel 8

[0020] Rotating shaft 9

[0021] Bearing 10

[0022] Bracket 11

[0023] Gas storage tank 12

[0024] Air pump drive controller 13

[0025] Moving hinge 14

[0026] Metal rod 15

[0027] Hydraulic cylinder 16

[0028] Cylinder barrel 161

[0029] Piston 162

[0030] Piston rod 163

[0031] Damping hole 1621

[0032] Fixed hinge 17

[0033] Anti-vibration wire 24

[0034] Fixed pulley 25

[0035] Locking mechanism 26

[0036] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific embodiments

[0037] The technical solution of the present invention will be further described in detail below according to the drawings in the specification and in conjunction with specific embodiments.

[0038] Please refer to Figure 1 and Figure 2 , the present invention provides a pressure-driven automatic tracking device for solar photovoltaic panels. The pressure-driven automatic tracking device for solar photovoltaic panels includes a photovoltaic panel 1, a first counterweight 2, a corrugated pipe 3, a second counterweight 6, a transmission component 7, a rotating wheel 8, a rotating shaft 9, a bearing 10, a bracket 11, and an air charging mechanism. The air charging mechanism includes an air duct 4, a two-way air pump 5, a gas storage tank 12, and an air pump drive controller 13.

[0039] Both ends of the rotating shaft 9 are supported by bearings 10 and are supported by the bracket 11. The photovoltaic panel 1 is fixed to the rotating shaft 9, and the eccentricity of the center of gravity of the photovoltaic panel 1 relative to the axis of the rotating shaft 9 is preferably as small as possible. In this embodiment, the center of gravity of the photovoltaic panel 1 is arranged at the axis of the rotating shaft 9. The rotating wheel 8 is fixed to the rotating shaft 9, and the rotating shaft 9 rotates as the rotating wheel 8 rotates. A transmission component 7 is arranged on the rotating wheel. Both ends of the transmission component 7 are respectively connected with a balance weight, namely a first balance weight 2 and a second balance weight 6. The first balance weight 2 is connected to the end face of the bellows 3, and this connection can be a direct connection or an indirect connection. The bellows 3 is connected to a two-way air pump 5 through an air duct 4. The two-way air pump 5 is connected to an air pump drive controller 13. The two-way air pump 5 is also connected to an air storage tank 12. The air storage tank 12 is used to store gas, inflate the two-way air pump 5 or store the gas discharged by the two-way air pump 5. Of course, the air storage tank 12 can also not be provided. Through the inflation and deflation of the bellows 3 by the inflation mechanism, the bellows 3 expands and contracts, thereby driving the first balance weight 2 to move in the vertical direction. There are various connection methods between the bellows 3 and the first balance weight 2 that can achieve this function. It can be that the first balance weight 2 is pushed up by the elongation of the bellows 3, or the first balance weight 2 is pulled up by the elongation of the bellows 3, etc., and will not be elaborated here one by one.

[0040] The photovoltaic panel 1 mainly refers to various photovoltaic power generation components applied to large-scale photovoltaic power stations, but is not limited thereto.

[0041] The first balance weight 2 and the second balance weight 6 are arranged on both sides of the rotating wheel 8 for balancing. Their relative positions can be controlled by the expansion and contraction of the bellows 3, thereby driving the rotating shaft 9 to rotate under the support of the bearings 10, so as to realize the rotation of the photovoltaic panel 1 along the rotating shaft 9. The materials and sizes of the first balance weight 2 and the second balance weight 6 are not limited and can be designed according to the weight of the photovoltaic panel 1. The driving torque generated by the mass difference between the first balance weight 2 and the second balance weight 6 should be slightly greater than the frictional torque of the rotating system, so that the photovoltaic panel 1 can always maintain stability and balance. Specifically, the first balance weight 2 and the second balance weight 6 can be metal blocks or cement blocks, etc. In this embodiment, the first balance weight 2 and the second balance weight 6 are metal blocks.

[0042] The material of the corrugated pipe 3 can be a metal material or a non-metal material such as polytetrafluoroethylene or silicone rubber, but is not limited thereto. The corrugated pipe 3 has good sealing performance and flexibility. The diameter and height of the corrugated pipe 3 are determined by the actual selection angle of the photovoltaic panel 1 to be controlled, and the working pressure can be normal pressure or slightly positive pressure. In this embodiment, the material of the corrugated pipe 3 is silicone rubber. The material of the corrugated pipe 3 should have certain properties such as temperature resistance, heat resistance, and corrosion resistance. The corrugated pipe 3 can expand and contract axially with the charging and discharging of the internal gas. Through the inflation and deflation of the two-way air pump 5, the corrugated pipe 3 can be elongated and shortened, generating a displacement in the vertical direction, thereby driving the first counterweight 2 to move up and down, and further driving the runner 8 to rotate.

[0043] The material of the gas pipeline 4 is not limited, as long as it can withstand a certain pressure and play a role in gas transmission. The gas pipeline 4 can be a metal pipe or a non-metal pipe. In this embodiment, the gas pipeline 4 is a silicone rubber pipe. The length and diameter of the gas pipeline 4 can be designed based on actual control requirements. Generally speaking, the diameter of the gas pipeline 4 is not less than 1 millimeter, that is, greater than or equal to 1 millimeter, to avoid too much resistance to gas charging and discharging, which is not conducive to gas flow. The gas pipeline 4 can be optimized in series and parallel according to the actual number of photovoltaic panels 1 to be controlled.

[0044] The transmission component 7 can withstand a certain tensile force and is tightly connected to the runner 8, and can drive the runner 8 to rotate. When the runner 8 rotates, it further drives the rotating shaft 9 to rotate. Since the photovoltaic panel 1 is fixed to the rotating shaft 9, the photovoltaic panel 1 rotates together with the rotating shaft 9, realizing the automatic tracking of the photovoltaic panel 1 to sunlight.

[0045] The length of the transmission component 7 is designed according to the actual height of the bracket 11. The transmission component 7 can be a flexible component such as a traction wire, a chain, or a belt that can play a transmission role. In this embodiment, the transmission component 7 is a traction wire.

[0046] The gas storage tank 12 mainly plays the role of storing working gas and is tightly connected to the two-way air pump 5. The working gas in the gas storage tank can be a safe and stable gas such as dry air, nitrogen, or inert gas, and can be selected and used according to the specific application environment.

[0047] The two-way air pump 5 does not have a specific type and can be selected and used according to the specific application environment. When the photovoltaic panel 1 generates electricity, the two-way air pump 5 presses the gas in the gas storage tank 12 into the corrugated pipe 3 through the gas pipeline 4; when the photovoltaic panel 1 does not generate electricity, the two-way air pump 5 sends the gas in the corrugated pipe 3 and the gas pipeline 4 back to the gas storage tank 12 to realize the closed circulation of the working gas.

[0048] The air pump drive controller 13 controls and adjusts the inflation volume of the two-way air pump 5, and can control the inflation flow rate of the bellows 3 according to the change of the sun irradiation angle, or can control and maintain the light-receiving angle of the photovoltaic panel 1 in real time according to the time-sequence control method.

[0049] The photovoltaic panel 1 is placed on a rotating shaft 9 supported by a bracket 11. The rotating shaft 9 is connected to the bracket 11 through a bearing 10. The photovoltaic panel 1 can rotate driven by a runner 8 pulled by a traction wire. The first counterweight 2 and the second counterweight 6 are placed on both sides of the runner 8 through the traction wire, and the first counterweight 2 is in contact with the bellows 3. By changing the gas pressure in the bellows through the two-way air pump 5, the first counterweight 2 is subjected to a force from the bellows 3 and moves in the vertical direction, thereby adjusting the relative position between the first counterweight 2 and the second counterweight 6, driving the traction wire to move, the movement of the traction wire drives the runner 8 to rotate, and further drives the photovoltaic panel 1 to rotate at a constant speed, realizing the real-time automatic tracking of the photovoltaic panel to sunlight.

[0050] The pressure-driven solar photovoltaic panel automatic tracking device further includes an anti-vibration mechanism. Please refer to Figure 3, the anti-vibration mechanism includes two moving hinges 14, two metal rods 15, two hydraulic cylinders 16 and two fixed hinges 17. The two moving hinges 14 are respectively arranged on the photovoltaic panel 1 and are respectively located at appropriate positions between the two ends of the photovoltaic panel 1 and the rotating shaft 9. In this embodiment, the two moving hinges 14 are respectively located at the two ends of the photovoltaic panel 1 perpendicular to the rotating shaft 9. One ends of the two metal rods 15 are respectively fixed to the two moving hinges 14, and the other ends are respectively fixed to the two hydraulic cylinders 16. The other ends of the two hydraulic cylinders 16 are respectively connected to the two fixed hinges 17, and the two fixed hinges 17 are fixed to a fixing device or the ground, etc. The hydraulic cylinder 16 includes a cylinder barrel 161, a piston 162, and a piston rod 163. The piston 162 and the piston rod 163 are rigidly connected. The piston 162 is provided with a damping hole 1621, and the piston rod 163 is fixed to the fixed hinge 16. Specifically, the other end of the metal rod 15 is fixed to the cylinder barrel 161 of the hydraulic cylinder 16. The cylinder barrel 161 is filled with a fluid, such as hydraulic oil, etc. The ratio of the cross-sectional area of the piston 162 to the cross-sectional area of the damping hole 1621 is greater than or equal to 900 and less than or equal to 15000. Preferably, the ratio of the cross-sectional area of the piston 162 to the cross-sectional area of the damping hole 1621 is greater than or equal to 2000 and less than or equal to 3000. In this embodiment, the ratio of the cross-sectional area of the piston 162 to the cross-sectional area of the damping hole 1621 is 2500. The size of the damping hole 1621 can be calculated and designed on the premise of factors such as the restricted vibration speed, the type of fluid, and not interfering with the uniform rotation of the photovoltaic panel. The piston 162 can axially move slowly inside the cylinder barrel 161, and the damping hole 1621 can prevent the rapid movement of the piston 162 and the piston rod 163. Therefore, the anti-vibration mechanism can prevent the photovoltaic panel 1 from trembling or resonating under wind load or other accidental external loads, but does not affect the normal operation of the pressure-driven solar photovoltaic panel automatic tracking device. When there are bad weather conditions such as rain, snow, etc., the air pump driving controller 13 can be manually controlled to inflate or deflate the two-way air pump 5, so that the photovoltaic panel 1 stays at a specific angle to prevent the photovoltaic panel 1 from snowing or being blown down, etc.

[0051] Please refer to Figure 4, the structure of the anti-vibration mechanism is not limited to the description of the above embodiments and can also be other structures as long as it can prevent the photovoltaic panel from trembling or resonating. The anti-vibration mechanism can also include anti-vibration steel wires 24, at least two fixed pulleys 25, and a locking mechanism 26. Both ends of the photovoltaic panel 1 perpendicular to the rotating shaft 9 are respectively fixed to both ends of the anti-vibration steel wire 24. The anti-vibration steel wire 24 is supported by at least two fixed pulleys 25, and a locking mechanism 26 is arranged on the anti-vibration steel wire 24 between the at least two fixed pulleys 25. The locking mechanism 26 is provided with a speed sensor. The speed sensor 26 can detect the moving speed of the anti-vibration steel wire 24. When the moving speed of the anti-vibration steel wire 24 exceeds the set value, the locking mechanism 26 can be automatically activated to lock the anti-vibration steel wire 24. Therefore, the anti-vibration mechanism can prevent the photovoltaic panel 1 from trembling or resonating under the action of wind load. Of course, the installation position of the locking mechanism 26 is not limited as long as it can lock the anti-vibration steel wire 24. When there are bad weather such as rain and snow, the air pump driving controller 13 can be manually controlled to make the two-way air pump 5 inflate or deflate, so that the photovoltaic panel 1 stays at a specific angle, and the locking mechanism 26 is used to lock the anti-vibration steel wire 24. Then the photovoltaic panel 1 is fixed at a specific angle to prevent the photovoltaic panel 1 from snow accumulation or being blown down by the wind, etc.

[0052] The photovoltaic panels of the pressure-driven solar photovoltaic panel automatic tracking device provided by the present invention are not limited to one group and can also be multiple groups. The multiple groups of photovoltaic panels can be connected in series or in parallel. When multiple groups of photovoltaic panels are connected in series, each group of photovoltaic panels is provided with a rigid rotating shaft. The rigid rotating shafts are connected by a coupler and a flexible shaft. Only one of the rotating shafts is provided with a runner. By controlling the inflation amount adjustment of the bellows by the one two-way air pump, the automatic tracking of the multiple groups of photovoltaic panels to sunlight can be controlled simultaneously. Although this series connection method is slightly lagging, due to the small number of groups, the cost can be greatly reduced and the installation is convenient.

[0053] When multiple groups of photovoltaic panels are connected in parallel, each group of photovoltaic panels is arranged on a different rotating shaft, that is, each group of photovoltaic panels is provided with a rotating shaft, and each rotating shaft is provided with a runner. A transmission component is arranged on each runner. Both ends of each transmission component are respectively connected to a first balance weight and a second balance weight. Each of the first balance weights is in contact with a bellows. The multiple bellows are connected to the same two-way air pump through different air ducts. That is to say, multiple groups of photovoltaic panels in parallel share one two-way air pump. By controlling the inflation amount adjustment of the multiple bellows by the one two-way air pump, the multiple first balance weights are moved in the vertical direction, and then the multiple runners are driven to rotate, realizing the automatic tracking of the multiple groups of photovoltaic panels to sunlight.

[0054] The pressure-driven automatic tracking device for solar photovoltaic panels provided by the embodiments of the present invention mainly aims at the automatic tracking of solar photovoltaic panels for sunlight. It is mainly horizontal single-axis tracking, and can also be inclined single-axis tracking. It can be east-west direction tracking or north-south direction tracking, and is applicable to fields such as large-scale solar power stations and distributed integrated energy systems.

[0055] The pressure-driven automatic tracking device for solar photovoltaic panels provided by the embodiments of the present invention does not use a reduction mechanism and a driving motor in the prior art to drive the photovoltaic panel to rotate. Instead, by applying the charging and discharging action of the gas in the bellows, the photovoltaic panel can be controlled to rotate continuously and uniformly, thereby realizing the real-time automatic tracking of the photovoltaic panel for sunlight. Since the photovoltaic panel rotates uniformly to track sunlight in real time, the light energy utilization rate is relatively high. Moreover, the structure of this device is simple, and the power consumption of the required two-way air pump is extremely low, so the driving power of the two-way air pump is very small. The bellows material of this device has a long service life, can withstand high temperatures, is corrosion-resistant, anti-aging and anti-fatigue, has good elasticity, a wide use temperature range, and high reliability. Therefore, this device has good stability and a long service life. Moreover, the center of gravity of the photovoltaic panel of this device is just located at the axis of the rotating shaft, so there is no additional torque, and thus the driving power is small.

[0056] In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included within the scope claimed by the present invention.

Claims

1. A pressure-driven automatic tracking device for a solar photovoltaic panel, which comprises: a photovoltaic panel, a rotating shaft, a runner, a transmission component, a first counterweight, a second counterweight, a corrugated pipe and an inflation mechanism. The photovoltaic panel is fixed to the rotating shaft, the runner is fixedly arranged on the rotating shaft, a transmission component is arranged on the runner, the first counterweight and the second counterweight are respectively connected to both ends of the transmission component, the first counterweight is connected to the end face of the corrugated pipe, the corrugated pipe is connected to the inflation mechanism, and the inflation amount of the corrugated pipe is adjusted through the inflation mechanism, so that the corrugated pipe expands and contracts, and further the first counterweight connected to the end face of the corrugated pipe moves in the vertical direction, thereby driving the runner to rotate, and realizing the automatic tracking of the photovoltaic panel to sunlight.

2. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 1, wherein, the inflation mechanism comprises an air duct, a two-way inflation pump and an air pump drive controller. The corrugated pipe is connected to the two-way inflation pump through the air duct, the two-way inflation pump is connected to the air pump drive controller, and the inflation amount of the corrugated pipe is adjusted through the air pump drive controller.

3. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 2, wherein, the gas pressure in the corrugated pipe is changed through the two-way inflation pump, so that the first counterweight is subjected to the force from the corrugated pipe and moves in the vertical direction, and further the relative position between the first counterweight and the second counterweight is adjusted, thereby driving the transmission component to move, the transmission component moves to drive the runner to rotate, and further drives the photovoltaic panel to rotate, realizing the automatic tracking of the photovoltaic panel to sunlight.

4. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 2, wherein, the air pump drive controller controls the inflation flow rate of the corrugated pipe according to the change of the solar irradiation angle, and controls and maintains the light-receiving angle in real time.

5. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 2, wherein, the air pump drive controller controls the inflation flow rate of the corrugated pipe according to the time-sequence control mode, and controls and maintains the light-receiving angle in real time.

6. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 1, wherein, it further comprises a vibration-proof mechanism, which is used to prevent the photovoltaic panel from generating tremors or resonances.

7. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 6, wherein, the vibration-proof mechanism comprises two moving hinges, two metal rods, two hydraulic cylinders and two fixed hinges. The positions of the photovoltaic panel on both sides of the rotating shaft are respectively connected to the hydraulic cylinders through the moving hinges and the metal rods, and the hydraulic cylinders are fixed through the fixed hinges.

8. The pressure-driven automatic tracking device for a solar photovoltaic panel according to claim 7, wherein, The hydraulic cylinder consists of a cylinder barrel, a piston and a piston rod. The piston and the piston rod are rigidly connected. The piston is provided with damping holes. The piston rod is fixed to the fixed hinge, and one end of the metal rod is fixed to the moving hinge and the other end is fixed to the cylinder barrel.

9. The pressure-driven automatic tracking device for solar photovoltaic panels according to claim 6, wherein, the anti-vibration mechanism includes anti-vibration steel wires, at least two fixed pulleys and a locking mechanism. Both ends of the photovoltaic panel perpendicular to the rotating shaft are respectively fixed to both ends of the anti-vibration steel wire. The anti-vibration steel wire is supported by the at least two fixed pulleys, and the locking mechanism is arranged on the anti-vibration steel wire.

10. The pressure-driven automatic tracking device for solar photovoltaic panels according to claim 1, wherein, it includes multiple groups of photovoltaic panels. Each group of photovoltaic panels is provided with a rotating shaft. The rotating shafts are mechanically connected to each other. Only one of the rotating shafts is provided with a runner. By adjusting the inflation amount of the bellows through the inflation mechanism, the automatic tracking of the multiple groups of photovoltaic panels towards sunlight can be controlled simultaneously.

11. The pressure-driven automatic tracking device for solar photovoltaic panels according to claim 1, wherein, it includes multiple groups of photovoltaic panels. Each group of photovoltaic panels is provided with a rotating shaft, and each rotating shaft is provided with a runner. Each runner is provided with a transmission component. Both ends of each transmission component are respectively connected with a first counterweight and a second counterweight. Multiple bellows are connected to an inflation mechanism. By adjusting the inflation amount of the multiple bellows through the inflation mechanism, the multiple bellows expand and contract, so that the multiple first counterweights move in the vertical direction, thereby driving the multiple runners to rotate, realizing the automatic tracking of the multiple groups of photovoltaic panels towards sunlight.

12. The pressure-driven automatic tracking device for solar photovoltaic panels according to claim 1, wherein, the center of gravity of the photovoltaic panel is set at the axis of the rotating shaft.

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