A vibration control device, flexible photovoltaic panel system and energy harvesting method

Abstract

The present application belongs to the field of photovoltaic, and particularly relates to a vibration control device, a flexible photovoltaic panel system and an energy collection method, wherein the vibration control device comprises a blowing mechanism, and a blowing port of the blowing mechanism is arranged towards a panel surface of the flexible photovoltaic panel. The vibration control device provided by the present application can control vibration intensity of the flexible photovoltaic panel and a supporting suspension cable according to the size and presence or absence of environmental wind energy. When the environmental wind energy is large, the vibration control device reduces the vibration intensity of the flexible photovoltaic panel and the supporting suspension cable, so as to improve use stability and service life of the cable structure flexible photovoltaic panel system, provides a good working environment for the flexible photovoltaic panel, and improves solar energy conversion rate. When the environmental wind energy is small or zero, the vibration control device can enhance the vibration intensity of the flexible photovoltaic panel and the supporting suspension cable. Vibration can clean the surface of the flexible photovoltaic panel, improve the service life, and improve the solar energy conversion rate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of photovoltaics, and particularly relates to a vibration control device, a flexible photovoltaic panel system and an energy collection method. BACKGROUND

[0002] With the depletion of non-renewable energy such as oil and coal, China is committed to developing clean energy such as solar energy, wind energy and ocean energy to cope with global climate crisis, protect the ecological environment, achieve sustainable development and promote the green transformation of energy structure. Solar energy has become the first choice for power generation due to its sustainability and availability, and therefore photovoltaic power stations that directly convert solar energy into electricity using the photovoltaic effect of the semiconductor interface have been extensively researched. However, with the development of the photovoltaic industry, the traditional fixed photovoltaic support structure has gradually shown some shortcomings such as large area, poor adaptability to complex terrain, high construction cost and short span. A flexible photovoltaic support structure based on a cable is developed. It can reduce construction costs, allow large spans and higher gaps, and adapt to complex terrain.

[0003] Due to the small damping of the cable, the flexible photovoltaic support structure is prone to large vibrations under the action of wind. If this vibration is not controlled, it will first directly affect the efficiency of the photovoltaic panel in converting light energy into electrical energy, and also affect the stability and service life of the photovoltaic panel. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a vibration control device, a flexible photovoltaic panel system and an energy collection method, which can significantly improve the stability, service life, solar energy conversion rate and cleanliness of the cable structure flexible photovoltaic panel system without affecting the solar energy collection effect of the original cable structure flexible photovoltaic panel system.

[0005] The present application provides a vibration control device, comprising a gas blowing mechanism, wherein the gas blowing port of the gas blowing mechanism is arranged towards the panel surface of the flexible photovoltaic panel.

[0006] When the environmental wind energy is greater than a set value, the gas blowing mechanism is used to inject air flow into the windward surface of the flexible photovoltaic panel, suppress the flow separation of the windward surface of the flexible photovoltaic panel, increase the surface gas flow rate of the windward surface, and reduce the pressure difference between the two sides of the flexible photovoltaic panel to suppress the vibration of the flexible photovoltaic panel.

[0007] When the environmental wind energy is less than a set value and greater than zero, the gas blowing mechanism can be used to inject air flow into one side of the flexible photovoltaic panel, so as to increase the boundary layer flow rate difference between the two sides of the flexible photovoltaic panel and increase the pressure difference between the two sides of the flexible photovoltaic panel to increase the vibration of the flexible photovoltaic panel.

[0008] When the environmental wind energy is equal to zero, the gas blowing mechanism can be used to blow air into one side of the flexible photovoltaic panel to drive the flexible photovoltaic panel to vibrate.

[0009] Furthermore, in a single-span cable-stayed flexible photovoltaic panel system, at least two air blowing mechanisms are arranged, with the air blowing port of at least one air blowing mechanism facing the lower upper surface of the flexible photovoltaic panel, and the air blowing port of at least the other air blowing mechanism facing the higher lower surface of the flexible photovoltaic panel.

[0010] Furthermore, in a multi-span cable-stayed flexible photovoltaic panel system, at least two air blowing mechanisms are arranged, with the air blowing port of at least one air blowing mechanism facing the lower upper surface of the first flexible photovoltaic panel, and the air blowing port of at least the other air blowing mechanism facing the higher lower surface of the tail flexible photovoltaic panel.

[0011] Furthermore, the blowing mechanism is a synthetic jet exciter.

[0012] Furthermore, the air blowing mechanism is fixedly installed on one side of the flexible photovoltaic panel, and the air blowing port acts on the other side of the flexible photovoltaic panel.

[0013] Furthermore, this vibration control device also includes sensors for detecting ambient wind energy and ambient wind direction.

[0014] Furthermore, a sensor is arranged at each of the four corners of the cable-structured flexible photovoltaic panel system.

[0015] The present invention also provides a cable-structured flexible photovoltaic panel system, including the above-mentioned vibration control device.

[0016] Furthermore, this cable-stayed flexible photovoltaic system also includes a vibration energy harvesting component disposed between the support frame and the supporting suspension cable in the cable-stayed flexible photovoltaic system.

[0017] Furthermore, the present invention also provides an energy harvesting method for a cable-structured flexible photovoltaic panel, using the above-mentioned cable-structured flexible photovoltaic panel system, comprising the following steps:

[0018] The flexible photovoltaic panel absorbs solar energy for energy harvesting;

[0019] When the ambient wind energy is greater than the set value, the blowing mechanism is used to inject air fluid into the windward side of the flexible photovoltaic panel to suppress the flow separation on the windward side of the flexible photovoltaic panel, increase the gas flow velocity on the windward side surface, and reduce the pressure difference on both sides of the flexible photovoltaic panel to suppress the vibration of the flexible photovoltaic panel. At the same time, the vibration energy harvesting component harvests energy through the vibration of the supporting suspension cable.

[0020] When the ambient wind energy is less than a set value but greater than zero, the blowing mechanism can be used to inject air fluid into one side of the flexible photovoltaic panel, thereby increasing the boundary layer velocity difference between the two sides of the flexible photovoltaic panel and increasing the pressure difference between the two sides of the flexible photovoltaic panel to increase the vibration of the flexible photovoltaic panel. At the same time, the vibration energy harvesting component harvests energy through the vibration of the supporting suspension cable.

[0021] When the ambient wind energy is zero, the blowing mechanism can be used to blow air onto one side of the flexible photovoltaic panel, causing the flexible photovoltaic panel to vibrate. At the same time, the vibration energy harvesting component harvests energy through the vibration of the supporting suspension cable.

[0022] The beneficial effects of this invention are that the vibration control device provided by this invention can control the vibration intensity of the flexible photovoltaic panel and the supporting suspension cable according to the magnitude and presence of ambient wind energy. When the ambient wind energy is high, the vibration control device reduces the vibration intensity of the flexible photovoltaic panel and the supporting suspension cable to improve the stability and service life of the cable-structured flexible photovoltaic panel system, providing a good working environment for the flexible photovoltaic panel to improve the solar energy conversion rate. When the ambient wind energy is low or zero, the vibration control device can increase the vibration intensity of the flexible photovoltaic panel and the supporting suspension cable or cause the flexible photovoltaic panel and the supporting suspension cable to vibrate. Vibration can clean the surface of the flexible photovoltaic panel, improve its service life and improve the solar energy conversion rate. In addition, when a vibration energy harvesting component is installed between the support and the supporting suspension cable in the cable-structured flexible photovoltaic panel system, vibration can also cause the vibration energy harvesting component to harvest vibration energy when the ambient wind energy is low or zero.

[0023] Furthermore, vibration control can be achieved by installing an air blowing mechanism at a specific location on the flexible photovoltaic panel. This mechanism only needs to introduce airflow onto the flexible photovoltaic panel surface to increase or decrease the boundary layer velocity difference between the two sides. The air blowing mechanism can be simple in structure, low in energy consumption, and lightweight, with minimal modification and impact on the original cable-structure flexible photovoltaic panel system. Without affecting the solar energy collection effect of the original cable-structure flexible photovoltaic panel system, it significantly improves the stability, service life, solar energy conversion rate, and cleanliness of the cable-structure flexible photovoltaic panel system. When vibration energy harvesting components are installed between the bracket and the supporting suspension cable in the cable-structure flexible photovoltaic panel system, it can also ensure that the vibration intensity of the supporting suspension cable is within the appropriate power generation range of the vibration energy harvesting components, thus guaranteeing the power generation effect of the vibration energy harvesting components. Attached Figure Description

[0024] Appendix Figure 1 This is a top view of the multi-span cable-stayed flexible photovoltaic panel system of the present invention;

[0025] Appendix Figure 2 This is a schematic diagram of the multi-span cable-stayed flexible photovoltaic panel system of the present invention;

[0026] Appendix Figure 3 This is a front view of the multi-span cable-stayed flexible photovoltaic panel system of the present invention;

[0027] Appendix Figure 4 This is a front view of the single-span cable-stayed flexible photovoltaic panel system of the present invention;

[0028] Appendix Figure 5 This is a schematic diagram of the air blowing mechanism in this invention;

[0029] Appendix Figure 6 This is a schematic diagram of the vibration energy harvesting component in this invention;

[0030] Appendix Figure 7 This is a schematic diagram of the installation of the vibration energy harvesting component in this invention.

[0031] In the figure, 1-cable structure flexible photovoltaic panel system; 11-flexible photovoltaic panel; 12-support; 13-supporting suspension cable; 14-vibration energy harvesting component; 141-connecting plate; 1411-bolt mounting hole; 142-PVDF piezoelectric film; 143-metal layer; 144-ring magnet; 15-vibration control device; 151-air blowing mechanism; 1511-air blowing port; 152-sensor. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0034] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0037] As attached Figure 1 - Appendix Figure 7 As shown, the present invention provides a vibration control device 15, including an air blowing mechanism 151. The air blowing port 1511 of the air blowing mechanism 151 is arranged facing the surface of the flexible photovoltaic panel 11. Preferably, the air blowing port 1511 of the air blowing mechanism 151 is arranged facing the upstream end of the windward side of the surface of the flexible photovoltaic panel 11.

[0038] When the ambient wind energy is greater than a set value, the air blowing mechanism 151 is used to inject air fluid into the windward side of the flexible photovoltaic panel 11 to suppress the flow separation of the windward side of the flexible photovoltaic panel 11, increase the gas flow velocity on the windward side surface, and make the gas flow velocities on the windward and leeward sides close, thereby reducing the pressure difference on both sides of the flexible photovoltaic panel 11 to suppress the vibration of the flexible photovoltaic panel 11. In this way, when the ambient wind energy is too strong, the vibration intensity of the flexible photovoltaic panel 11 and the supporting suspension cable 13 in the cable structure flexible photovoltaic panel system 1 can be reduced, thereby improving the stability and service life of the cable structure flexible photovoltaic panel system 1 and providing a good working environment for the flexible photovoltaic panel 11 to improve the solar energy conversion rate.

[0039] When the ambient wind energy is less than a set value but greater than zero, the blowing mechanism 151 can be used to inject air fluid into one side of the flexible photovoltaic panel 11, thereby increasing the boundary layer velocity difference between the two sides of the flexible photovoltaic panel 11 and increasing the pressure difference between the two sides of the flexible photovoltaic panel 11 to increase the vibration of the flexible photovoltaic panel 11. The enhanced vibration can clean the surface of the flexible photovoltaic panel 11, for example, by shaking off fallen leaves or debris covering the surface of the flexible photovoltaic panel 11, thereby improving its service life and the conversion efficiency of solar energy. In addition, when a vibration energy harvesting component 14 is set between the support 12 and the supporting suspension cable 13 in the cable structure flexible photovoltaic panel system 1, the energy harvesting effect of the vibration energy harvesting component 14 can be improved when the ambient wind energy is low.

[0040] When the ambient wind energy is zero, the blowing mechanism 151 can be used to blow air onto one side of the flexible photovoltaic panel 11, causing the flexible photovoltaic panel 11 to vibrate. This can clean the surface of the flexible photovoltaic panel 11, for example, by shaking off fallen leaves or debris covering the surface of the flexible photovoltaic panel 11, thereby improving its service life and the conversion efficiency of solar energy. In addition, when a vibration energy harvesting component 14 is installed between the bracket 12 and the supporting suspension cable 13 in the cable structure flexible photovoltaic panel system 1, the flexible photovoltaic panel 11 and the supporting suspension cable 13 can vibrate when the ambient wind energy is zero, so that the vibration energy harvesting component 14 can harvest vibration energy.

[0041] The vibration control device 15 provided by this invention can control the vibration intensity of the flexible photovoltaic panel 11 and the supporting suspension cable 13 according to the magnitude and presence of ambient wind energy. When the ambient wind energy is high, the vibration control device 15 reduces the vibration intensity of the flexible photovoltaic panel 11 and the supporting suspension cable 13 to improve the stability and service life of the cable structure flexible photovoltaic panel system 1, and provide a good working environment for the flexible photovoltaic panel 11 to improve the solar energy conversion rate. When the ambient wind energy is low or zero, the vibration control device 15 can enhance the vibration intensity of the flexible photovoltaic panel 11 and the supporting suspension cable 13 or cause the flexible photovoltaic panel 11 and the supporting suspension cable 13 to vibrate. The enhanced vibration can clean the surface of the flexible photovoltaic panel 11, improve its service life and improve the solar energy conversion rate. In addition, when a vibration energy collection component 14 is set between the support 12 and the supporting suspension cable 13 in the cable structure flexible photovoltaic panel system 1, the vibration can also cause the vibration energy collection component 14 to collect vibration energy when the ambient wind energy is low or zero.

[0042] Furthermore, vibration control can be achieved by setting an air blowing mechanism 151 at a specific position on the surface of the flexible photovoltaic panel 11. The air blowing mechanism 151 only needs to introduce airflow onto the surface of the flexible photovoltaic panel 11 to increase or decrease the boundary layer velocity difference between the two sides of the flexible photovoltaic panel 11. The air blowing mechanism 151 can achieve a simple structure, low energy consumption, and light weight, with minimal modification and impact on the original cable structure flexible photovoltaic panel system 1. Without affecting the solar energy collection effect of the original cable structure flexible photovoltaic panel system 1, it significantly improves the stability, service life, solar energy conversion rate, and cleanliness of the cable structure flexible photovoltaic panel system 1. When a vibration energy collection component 14 is set between the bracket 12 and the supporting suspension cable 13 in the cable structure flexible photovoltaic panel system 1, it can also ensure that the vibration intensity of the supporting suspension cable 13 is within the appropriate power generation range of the vibration energy collection component 14, thus ensuring the power generation effect of the vibration energy collection component 14.

[0043] In one embodiment, reference is made to the appendix. Figure 4In the single-span cable-stayed flexible photovoltaic panel system 1, at least two air blowing mechanisms 151 are arranged, with at least one air blowing port 1511 facing the lower upper surface of the flexible photovoltaic panel 11, and at least another air blowing mechanism 151's air blowing port 1511 facing the higher lower surface of the flexible photovoltaic panel 11.

[0044] Reference Appendix Figure 4 When the ambient wind energy is greater than the set value, and when the ambient wind blows from the low side to the high side of the flexible photovoltaic panel 11 (see attached diagram). Figure 4 (From left to right in the diagram) At this time, refer to the attached document. Figure 4 As shown in the diagram, the upper part of the flexible photovoltaic panel 11 is the windward side, the lower part is the leeward side, the left side is the upstream end, and the right side is the downstream end. The air blowing mechanism 151, located on the lower upper surface of the flexible photovoltaic panel 11, operates to suppress flow separation on the windward side of the flexible photovoltaic panel 11, increase the gas velocity on the windward surface, and bring the gas velocities on the windward and leeward sides closer together. This reduces the pressure difference between the two sides of the flexible photovoltaic panel 11, thereby suppressing vibration. Furthermore, when the ambient wind blows from the high side to the low side of the flexible photovoltaic panel 11 (see attached diagram),... Figure 4 (From right to left in the diagram) At this time, refer to the attached... Figure 4 As shown in the diagram, the bottom of the flexible photovoltaic panel 11 is the windward side, the top is the leeward side, the right side is the upstream end, and the left side is the downstream end. The air blowing mechanism 151, which is set towards the high side of the lower plate of the flexible photovoltaic panel 11, works to suppress the flow separation on the windward side of the flexible photovoltaic panel 11, increase the gas flow velocity on the windward side surface, and make the gas flow velocities on the windward and leeward sides similar, thereby reducing the pressure difference on both sides of the flexible photovoltaic panel 11 to suppress the vibration of the flexible photovoltaic panel 11.

[0045] When the ambient wind energy is less than the set value, one or more air blowing mechanisms 151 can be controlled to work to inject air fluid into one side of the flexible photovoltaic panel 11, thereby increasing the boundary layer velocity difference between the two sides of the flexible photovoltaic panel 11 and increasing the pressure difference between the two sides of the flexible photovoltaic panel 11 to increase the vibration of the flexible photovoltaic panel 11.

[0046] When the ambient wind energy is zero, one of the blowing mechanisms 151 can be controlled to work, or at least two blowing mechanisms 151 can be controlled to blow air alternately to make the flexible photovoltaic panel 11 vibrate.

[0047] In one embodiment, reference is made to the appendix. Figure 1 - Appendix Figure 3In the multi-span cable structure flexible photovoltaic panel system 1, at least two air blowing mechanisms 151 are arranged. The air blowing port 1511 of at least one air blowing mechanism 151 is arranged facing the lower upper surface of the first flexible photovoltaic panel 11, and the air blowing port 1511 of at least another air blowing mechanism 151 is arranged facing the higher lower surface of the tail flexible photovoltaic panel 11.

[0048] Referring to Appendix 3, in the multi-span cable-stayed flexible photovoltaic panel system 1, the upstream windward side is most affected. The rear rows are less affected due to the barrier effect of the front rows. Therefore, in the multi-span cable-stayed flexible photovoltaic panel system 1, only one air blowing mechanism 151 needs to be installed on each of the first and last flexible photovoltaic panels 11. When the ambient wind energy exceeds a set value, controlling the vibration amplitude of the upstream flexible photovoltaic panel 11 will simultaneously control the vibration amplitude of the remaining flexible photovoltaic panels 11. While ensuring vibration control, the installation difficulty and structural complexity of the vibration control device 15 are simplified. Its specific control method is consistent with that of the single-span cable-stayed flexible photovoltaic panel system 1, and will not be repeated here.

[0049] In one embodiment, the blowing mechanism 151 is a synthetic jet exciter. The synthetic jet exciter is lightweight, requires no gas source, consumes little energy, and can spray high-energy gas, thus having minimal impact on the original cable-structure flexible photovoltaic panel system 1. Preferably, the synthetic jet exciter is powered directly by the electrical energy converted from the cable-structure flexible photovoltaic panel system 1. Preferably, the synthetic jet exciter is a synthetic dual-jet exciter, thereby improving the jet intensity.

[0050] In one embodiment, the air blowing mechanism 151 is fixedly disposed on one side of the flexible photovoltaic panel 11, and the air blowing port 1511 acts on the other side of the flexible photovoltaic panel 11. In this embodiment, the air blowing mechanism 151 is directly disposed on the flexible photovoltaic panel 11. When the ambient temperature is zero, the air blowing by the air blowing mechanism 151 will cause the flexible photovoltaic panel 11 to vibrate. The air blowing port 1511 acts on the other side of the flexible photovoltaic panel 11. The air blowing port 1511 can penetrate through the surface of the flexible photovoltaic panel 11, or the air blowing mechanism 151 can be disposed on the side of the flexible photovoltaic panel 11, and the air blowing port 1511 can directly act on the other side through the side of the flexible photovoltaic panel 11.

[0051] In one embodiment, the vibration control device further includes a sensor 152 for detecting ambient wind energy and ambient wind direction, thereby providing ambient wind energy and ambient wind direction data for the operation of one or more blowing mechanisms 151. Preferably, the sensor 152 is a self-powered sensor to reduce energy consumption.

[0052] In one embodiment, a sensor 152 is arranged at each of the four corners of the cable-structured flexible photovoltaic panel system 1. In this embodiment, the sensor 152 can be a wind speed sensor, which can determine the wind direction based on the wind speed data detected by the four speed sensors, and can also directly obtain the ambient wind energy.

[0053] The present invention also provides a cable-structured flexible photovoltaic panel system 1, including the above-mentioned vibration control device 15.

[0054] In one embodiment, the cable-stayed flexible photovoltaic panel system 1 further includes a vibration energy harvesting component 14 disposed between the support 12 and the supporting suspension cable 13 in the cable-stayed flexible photovoltaic panel system 1. In this embodiment, when the ambient wind energy causes the flexible photovoltaic panel 11 and the supporting suspension cable 13 to vibrate, the vibration energy harvesting component 14 will harvest energy. When the ambient wind energy is less than a set value or the ambient wind energy is zero, the vibration control device 15 can be used to ensure the vibration of the supporting suspension cable 13, thereby ensuring the energy harvesting effect of the vibration energy harvesting component 14.

[0055] Reference Appendix Figure 6 The vibration energy harvesting assembly 14 includes an energy harvesting subunit disposed at the connection between the bracket 12 and the supporting suspension cable 13. The energy harvesting subunit includes a connecting plate 141 and an energy harvesting assembly. The energy harvesting assembly includes a PVDF piezoelectric film 142, a metal layer 143, wires, and a ring magnet 144. The connecting plate 141 is provided with bolt mounting holes 1411. The connecting plate 141 is fixedly connected to the bracket 12 through the bolt mounting holes 1411 and bolt fasteners. The connecting plate 141 is connected to the energy harvesting assembly by welding. The energy harvesting assembly includes... The device comprises two layers: an inner PVDF piezoelectric film 142 and an outer metal layer 143. A ring magnet 144 is mounted at the bottom of the metal layer 143, and a ring magnet 144 facing in the opposite direction is mounted on the outside of the supporting suspension cable 13 it surrounds. Specifically, a ring magnet 144 is attached to the outer surface of the supporting suspension cable 13, and another ring magnet 144 is mounted at the bottom of the metal layer 143. The magnetic poles of the two ring magnets 144 face each other. When the supporting suspension cable 13 vibrates, one side of the metal layer 143 deforms under the combined action of the magnet's gravity and repulsive force, generating a voltage output. (See attached diagram.) Figure 7 The flexible photovoltaic panel 11 is attached to the supporting suspension cable 13, which is wrapped by the energy harvesting device. The energy harvesting component is connected to the connecting plate 141 by welding, and the connecting plate is connected to the bracket 12 by bolts.

[0056] When the environmental wind load acts on the supporting suspension cable 13, the supporting suspension cable 13 vibrates, which in turn causes the flexible photovoltaic panel 11 and its support structure to vibrate. The greater the environmental wind load, the more intense the vibration. Conversely, the vibration of the flexible photovoltaic panel 11 and its support structure will cause the supporting suspension cable 13 connected to it to vibrate. This process repeats, resulting in a huge vibration transmission. When the environmental wind load increases further, it will have a huge impact on the flexible photovoltaic panel 11, causing its vibration effect to be further superimposed. At this time, the vibration transmission will be more obvious.

[0057] When the support cable 13 receives a huge vibration signal, it will generate violent vibration. Since both ends of the support cable 13 are fixed to the bracket 12, the vibration will eventually be transmitted to the vicinity of the bracket 12. At this time, one end of the metal 143 receives this external vibration and transmits it to the PVDF piezoelectric film 142. The end is subjected to inertial force and undergoes forced vibration, generating large stress and strain on the substrate. The mechanical energy is converted into electrical energy through the PVDF piezoelectric film 142. An energy storage circuit is connected near the fixed end bracket 12 to store the energy output by the piezoelectric material, thus completing the vibration energy harvesting.

[0058] The present invention also provides an energy harvesting method for a cable-structured flexible photovoltaic panel, using the above-mentioned cable-structured flexible photovoltaic panel system 1, comprising the following steps:

[0059] The flexible photovoltaic panel 11 absorbs solar energy for energy harvesting;

[0060] When the ambient wind energy is greater than the set value, the blowing mechanism 151 is used to inject air fluid into the windward side of the flexible photovoltaic panel 11 to suppress the flow separation of the windward side of the flexible photovoltaic panel 11, increase the gas flow velocity on the windward side surface, and reduce the pressure difference on both sides of the flexible photovoltaic panel 11 to suppress the vibration of the flexible photovoltaic panel 11. At the same time, the vibration energy harvesting component 14 harvests energy through the vibration of the supporting suspension cable 13.

[0061] When the ambient wind energy is less than the set value, the blowing mechanism 151 can be used to inject air fluid into one side of the flexible photovoltaic panel 11, thereby increasing the boundary layer velocity difference between the two sides of the flexible photovoltaic panel 11 and increasing the pressure difference between the two sides of the flexible photovoltaic panel 11 to increase the vibration of the flexible photovoltaic panel 11. At the same time, the vibration energy harvesting component 14 harvests energy through the vibration of the supporting suspension cable 13.

[0062] When the ambient wind energy is zero, the blowing mechanism 151 can be used to blow air onto one side of the flexible photovoltaic panel 11, causing the flexible photovoltaic panel 11 to vibrate. At the same time, the vibration energy harvesting component 14 harvests energy through the vibration of the supporting suspension cable 13.

[0063] The above description is merely an embodiment and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations, modifications, or alterations to the technical solutions of the present invention without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A vibration control device applied to a cable-structured flexible photovoltaic panel system (1), characterized in that, It includes an air blowing mechanism (151), wherein the air blowing port (1511) of the air blowing mechanism (151) is disposed facing the surface of the flexible photovoltaic panel (11); When the ambient wind energy is greater than the set value, the blowing mechanism (151) is used to inject air fluid into the windward side of the flexible photovoltaic panel (11), suppress the flow separation of the windward side of the flexible photovoltaic panel (11), increase the gas flow rate on the windward side surface, and reduce the pressure difference on both sides of the flexible photovoltaic panel (11) to suppress the vibration of the flexible photovoltaic panel (11). When the ambient wind energy is less than the set value and greater than zero, the blowing mechanism (151) can be used to inject air fluid into one side of the flexible photovoltaic panel (11), thereby increasing the boundary layer velocity difference between the two sides of the flexible photovoltaic panel (11) and increasing the pressure difference between the two sides of the flexible photovoltaic panel (11) to increase the vibration of the flexible photovoltaic panel (11). When the ambient wind energy is zero, the blowing mechanism (151) can be used to blow air onto one side of the flexible photovoltaic panel (11), causing the flexible photovoltaic panel (11) to vibrate.

2. The vibration control device as described in claim 1, characterized in that, in In the single-span cable structure flexible photovoltaic panel system (1), at least two air blowing mechanisms (151) are arranged, with the air blowing port (1511) of at least one air blowing mechanism (151) facing the lower upper surface of the flexible photovoltaic panel (11), and the air blowing port (1511) of at least another air blowing mechanism (151) facing the higher lower surface of the flexible photovoltaic panel (11).

3. The vibration control device as described in claim 1, characterized in that, in In the multi-span cable structure flexible photovoltaic panel system (1), at least two air blowing mechanisms (151) are arranged. The air blowing port (1511) of at least one air blowing mechanism (151) is arranged facing the lower side upper plate surface of the first flexible photovoltaic panel (11), and the air blowing port (1511) of at least another air blowing mechanism (151) is arranged facing the higher side lower plate surface of the tail flexible photovoltaic panel (11).

4. The vibration control device as described in claim 1, characterized in that, The blowing mechanism (151) is a synthetic jet exciter.

5. The vibration control device as described in claim 4, characterized in that, The air blowing mechanism (151) is fixedly installed on one side of the flexible photovoltaic panel (11), and the air blowing port (1511) acts on the other side of the flexible photovoltaic panel (11).

6. The vibration control device according to any one of claims 1-5, characterized in that, It also includes sensors (152) for detecting ambient wind energy and ambient wind direction.

7. The vibration control device as described in claim 6, characterized in that, The cable-structured flexible photovoltaic panel system (1) has a sensor (152) arranged at each of its four corners.

8. A cable-structured flexible photovoltaic panel system, characterized in that, Includes the vibration control device as described in any one of claims 1-7.

9. The cable-structure flexible photovoltaic panel system as described in claim 8, characterized in that, It also includes a vibration energy harvesting component (14) disposed between the support (12) and the supporting suspension cable (13) in the cable structure flexible photovoltaic panel system.

10. A method for energy harvesting using a cable-structured flexible photovoltaic panel, characterized in that, Using the cable-structured flexible photovoltaic panel system as described in claim 9 includes the following steps: The flexible photovoltaic panel (11) absorbs solar energy for energy collection; When the ambient wind energy is greater than the set value, the blowing mechanism (151) is used to inject air fluid into the windward side of the flexible photovoltaic panel (11), suppress the flow separation of the windward side of the flexible photovoltaic panel (11), increase the gas flow velocity on the windward side surface, and reduce the pressure difference on both sides of the flexible photovoltaic panel (11) to suppress the vibration of the flexible photovoltaic panel (11). At the same time, the vibration energy harvesting component (14) harvests energy through the vibration of the supporting suspension cable (13). When the ambient wind energy is less than the set value and greater than zero, the blowing mechanism (151) can be used to inject air fluid into one side of the flexible photovoltaic panel (11), thereby increasing the boundary layer velocity difference between the two sides of the flexible photovoltaic panel (11) and increasing the pressure difference between the two sides of the flexible photovoltaic panel (11) to increase the vibration of the flexible photovoltaic panel (11). At the same time, the vibration energy harvesting component (14) harvests energy through the vibration of the supporting suspension cable (13). When the ambient wind energy is zero, the blowing mechanism (151) can be used to blow air on one side of the flexible photovoltaic panel (11), causing the flexible photovoltaic panel (11) to vibrate. At the same time, the vibration energy harvesting component (14) harvests energy through the vibration of the supporting suspension cable (13).

Images