A passive-active composite heat dissipation device for solar photovoltaic equipment

Abstract

The application discloses a kind of main passive type composite heat sink for solar photovoltaic equipment, support is provided with photovoltaic panel, the lower portion of photovoltaic panel is provided with pulsating heat pipe, pulsating heat pipe is fixedly connected with support by fixing frame, the lower side of pulsating heat pipe is provided with heat dissipation contact base, the lower side of heat dissipation contact base is provided with ultrasonic transducer assembly, the lower portion of support is provided with adjusting device, adjusting device and ultrasonic transducer assembly are electrically connected with control device respectively.The working temperature of photovoltaic panel is reduced, the photoelectric conversion efficiency of photovoltaic panel is improved, the service life of the whole device is prolonged, the photoelectric conversion efficiency of photovoltaic panel and the efficiency of overall device are improved.

Description

Technical Field

[0001] This invention belongs to the field of solar photovoltaic technology, specifically relating to a combined active and passive heat dissipation device for solar photovoltaic equipment. Background Technology

[0002] Currently, solar power generation primarily focuses on photovoltaic (PV) power generation, which uses solar photovoltaic panels to convert sunlight into electricity. However, this process generates significant waste heat, causing the panels' operating temperature to rise continuously and impacting their photoelectric conversion efficiency. Current heat dissipation methods often fail to meet the performance requirements under high-intensity sunlight, compromising the overall efficiency of the system. Furthermore, to further improve the efficiency of solar photovoltaic panels, they need to be positioned where solar radiation is maximized. Therefore, the panels must automatically adjust to changes in the sun's position. Additionally, the ease of repair should be considered in case the automatic adjustment mechanism malfunctions.

[0003] Pulsating heat pipes possess advantages such as adjustable form, high heat transfer efficiency, stable performance, low cost, and strong adaptability. Therefore, this invention utilizes pulsating heat pipes to largely solve the heat transfer problem of solar photovoltaic equipment and address operational issues in low-temperature environments. Adding nanoparticles to the working fluid can increase its thermal conductivity, thereby enhancing the heat transfer capacity of the heat pipe. Ultrasonic heat transfer enhancement technology, as a type of active heat transfer enhancement technology, can effectively reduce the volume of the pulsating heat pipe, improve its heat transfer performance, and enable it to operate normally at lower temperature differences. Furthermore, the addition of ultrasonic excitation further enhances the effect of nanoparticles within the heat pipe. The extent to which active and passive combined heat dissipation affects the heat transfer performance of the pulsating heat pipe depends on the combined effect of the coupling between the two. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a combined active and passive heat dissipation device for solar photovoltaic equipment, which addresses the shortcomings of the prior art, reduces the operating temperature of the photovoltaic panel, improves the photoelectric conversion efficiency of the photovoltaic panel, extends the service life of the entire device, and improves the photoelectric conversion efficiency of the photovoltaic panel and the overall efficiency of the device.

[0005] The present invention adopts the following technical solution:

[0006] A combined active and passive heat dissipation device for solar photovoltaic equipment includes a support frame, a photovoltaic panel mounted on the support frame, a pulsating heat pipe mounted below the photovoltaic panel, the pulsating heat pipe being fixedly connected to the support frame via a fixing bracket, a heat dissipation contact base mounted below the pulsating heat pipe, an ultrasonic transducer assembly mounted below the heat dissipation contact base, an adjustment device mounted below the support frame, and the adjustment device and the ultrasonic transducer assembly being electrically connected to a control device.

[0007] Specifically, the pulsating heat pipe has an L-shaped structure, including an evaporation section and a condensation section. The evaporation section is located in the horizontal section of the L-shaped structure, and the condensation section is located in the vertical section of the L-shaped structure.

[0008] Furthermore, the evaporation section is mounted on the heat dissipation contact base, one end of the evaporation section is connected to the condensation section, and the condensation section is equipped with fins.

[0009] Specifically, the support includes a first horizontal support, a second horizontal support, a first vertical support, and a second vertical support. The first horizontal support, the second horizontal support, the first vertical support, and the second vertical support are arranged in a grid pattern. The lower part of the support is connected to the support frame through an adjustment device.

[0010] Furthermore, the adjustment device includes a first adjustment device and a second adjustment device, which are respectively installed on the upper part of the corresponding support frame. One support frame is connected to the first vertical support through the first adjustment device, and the other support frame is connected to the second vertical support through the second adjustment device. The first adjustment device and the second adjustment device are connected by a connecting rod.

[0011] Furthermore, each support frame is equipped with a bearing mounting seat, each bearing mounting seat is equipped with a single motor groove wheel, and each bearing mounting seat has an auxiliary fixing brake plate at the lower end corresponding to the single motor groove wheel. Each single motor groove wheel is movably connected to a corresponding arc-shaped movable wheel rod. The two ends of the arc-shaped movable wheel rod of the first adjustment device are respectively connected to the first vertical support, and the two ends of the arc-shaped movable wheel rod of the second adjustment device are respectively connected to the second vertical support. The connecting rod is set between the two single motor groove wheels.

[0012] Furthermore, a manual adjustment lever is provided on the outer side of the single motor groove wheel.

[0013] Specifically, the photovoltaic panels consist of multiple panels, which are sequentially mounted on the support frame.

[0014] Specifically, the ultrasonic transducer assembly includes multiple ultrasonic transducer assemblies, which are spaced apart on the heat dissipation contact base.

[0015] Specifically, nanoparticles are added inside the pulsating heat pipe.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] This invention discloses a combined active and passive heat dissipation device for solar photovoltaic equipment. It utilizes the efficient and stable heat transfer capability of a pulsating heat pipe to effectively dissipate waste heat generated during photovoltaic panel operation. By incorporating acoustic energy from an ultrasonic transducer, the heat transfer performance of the pulsating heat pipe is significantly improved, effectively reducing the operating temperature of the photovoltaic panel, increasing its photoelectric conversion efficiency, and extending the overall lifespan of the device. A control device allows for adjustment of the photovoltaic panel angle, enabling sunlight tracking and real-time adjustment of the applied ultrasonic power. This allows the photovoltaic panel to receive maximum solar radiation while maintaining optimal operating conditions, further improving the photoelectric conversion efficiency of the photovoltaic panel and the overall efficiency of the device.

[0018] Furthermore, the L-shaped pulsating heat pipe facilitates heat exchange between the evaporation section of the heat pipe and the photovoltaic panel. This not only enhances heat transfer and improves the operational stability of the photovoltaic panel, but also allows the placement angle of the pulsating heat pipe to be adjusted according to the changes in the photovoltaic panel, meeting various design requirements and facilitating installation. Setting the evaporation section in a horizontal L-shaped structure and the condensation section in a vertical structure promotes the overall circulation of the working fluid within the pulsating heat pipe, thereby improving its heat transfer efficiency.

[0019] Furthermore, by utilizing the characteristics of pulsating heat pipes and finned arrays to increase the heat transfer area, the waste heat generated during photovoltaic panel operation can be effectively transferred to the condensation section.

[0020] Furthermore, the photovoltaic panel support is designed in a "well" shape, with four supports simultaneously supporting and fixing the photovoltaic panel, which can effectively prevent the photovoltaic panel from shaking and reduce the probability of damage. The connection between the adjustment device and the support frame facilitates the installation and fixation of the adjustment device, preventing the entire adjustment device from being fatigued and damaged due to long-term stress.

[0021] Furthermore, the inclusion of a first and a second adjustment device reduces the torque on a single adjustment device during start-up and shutdown, lowering the risk of damage. Simultaneous operation of both devices accelerates the angle adjustment of the photovoltaic panel, improving its photoelectric conversion efficiency. Additionally, the use of connecting rods to link the adjustment devices not only enhances the aforementioned effects but also allows for simultaneous operation of both devices while operating a single device manually, reducing labor costs.

[0022] Furthermore, the single-motor groove wheel facilitates real-time, automatic tracking of sunlight by the entire photovoltaic device through control, reducing manual operation; the arc-shaped movable rod facilitates real-time start and stop when adjusting the photovoltaic panel, and also provides support for the photovoltaic panel.

[0023] Furthermore, the manual adjustment mechanism facilitates subsequent maintenance, allowing for manual operation in case of damage or failure of the photovoltaic panel or adjustment device.

[0024] Furthermore, the multi-distribution installation of photovoltaic panels not only facilitates installation but also makes daily maintenance and subsequent cleaning easier.

[0025] Furthermore, the use of multiple ultrasonic transducer components is beneficial for enhancing the heat transfer of the entire pulsating heat pipe, promoting the occurrence of ultrasonic cavitation, significantly enhancing the heat transfer capacity of the pulsating heat pipe, and effectively improving the working efficiency of the photovoltaic panel.

[0026] Furthermore, adding nanoparticles to the working fluid of the heat pipe, under the combined effect of ultrasound and nanoparticles, significantly improves the heat transfer performance of the pulsating heat pipe, effectively reduces the operating temperature of the photovoltaic panel, improves the photoelectric conversion efficiency of the photovoltaic panel, and extends the service life of the entire device.

[0027] In summary, this invention can significantly improve the heat transfer capacity of pulsating heat pipes by utilizing active ultrasonic waves and passive nanoparticles to enhance heat transfer, thereby achieving effective heat dissipation of solar photovoltaic panels and improving the photoelectric conversion efficiency of the photovoltaic panels. In addition, this invention provides automatic tracking of solar radiation and angle adjustment functions for photovoltaic panels. Furthermore, this invention also reduces the difficulty and cost of subsequent maintenance work.

[0028] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of the regulating device of the present invention.

[0031] Figure 3 This is a schematic diagram of the structure of the L-shaped pulsating heat pipe of the present invention.

[0032] The components are: 1. Photovoltaic panel; 21. First horizontal support; 22. Second horizontal support; 31. First vertical support; 32. Second vertical support; 41. First fixing frame; 41. Second fixing frame; 5. Fin assembly; 61. First adjustment device; 62. Second adjustment device; 7. Device support frame; 8. Support frame base; 9. Pulsating heat pipe; 10. Ultrasonic transducer assembly; 11. Connecting rod; 12. Heat dissipation contact base; 14. Arc-shaped movable wheel rod; 15. Bearing fixing seat; 16. Single motor grooved wheel; 17. Auxiliary fixing brake seat plate; 18. Manual adjustment rod; 19. Evaporation section; 20. Condensation section. Detailed Implementation

[0033] 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 some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "one side," "one end," and "one side," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0037] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0038] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0039] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0040] This invention provides a combined active and passive heat dissipation device for solar photovoltaic equipment. By adding an L-shaped pulsating heat pipe and fin assembly, and simultaneously adding nanoparticles to the working fluid of the heat pipe, and utilizing an ultrasonic transducer to introduce a sound field, the combined effect of ultrasound and nanoparticles significantly enhances the heat transfer capacity of the heat pipe, improves the overall heat transfer performance of the L-shaped pulsating heat pipe, reduces the operating temperature of the photovoltaic panel, further improves the photoelectric conversion efficiency of the photovoltaic panel, and extends the service life of the entire device. Furthermore, the adjustment device can automatically adjust the angle of the photovoltaic panel, achieving sunlight tracking capability and maximizing the amount of solar radiation received by the photovoltaic panel.

[0041] Please see Figure 1 The present invention discloses a combined active and passive heat dissipation device for solar photovoltaic equipment, comprising a photovoltaic panel 1, a bracket, a fixing frame, a fin assembly 5, an adjustment device, a support frame 7, a support frame base 8, a pulsating heat pipe 9, an ultrasonic transducer assembly 10, a connecting rod 11, a heat dissipation contact base 12, a control device, an arc-shaped movable wheel rod 14, a bearing fixing seat 15, a single motor grooved wheel 16, and a manual adjustment rod 18.

[0042] The photovoltaic panel 1 comprises multiple units, which are sequentially mounted on a support. A pulsating heat pipe 9 is disposed below the photovoltaic panel 1. One side of the pulsating heat pipe 9 is in direct contact with the photovoltaic panel 1, and the other side is connected to the heat dissipation contact base 12. Multiple ultrasonic transducer assemblies 10 are spaced apart on the lower side of the heat dissipation contact base 12. The pulsating heat pipe 9 is fixedly connected to the support via a fixing bracket. The lower part of the support is connected to the support frame 7 via an adjustment device. Both the ultrasonic transducer assemblies 10 and the adjustment device are electrically connected to a control device, which is used to control and adjust the power of the ultrasonic transducer assemblies 10.

[0043] The support structure includes a first horizontal support 21, a second horizontal support 22, a first vertical support 31, and a second vertical support 32. The first horizontal support 21, the second horizontal support 22, the first vertical support 31, and the second vertical support 32 are arranged in a grid pattern, and multiple photovoltaic panels 1 are sequentially arranged on the grid-shaped support structure.

[0044] The fixing frame includes a first fixing frame 41 and a second fixing frame 42, which are disposed between the first horizontal support 21 and the second horizontal support 22, and are spaced apart on the first vertical support 31 and the second vertical support 32.

[0045] The adjustment device includes a first adjustment device 61 and a second adjustment device 62. The first adjustment device 61 and the second adjustment device 62 are installed on the upper part of the support frame 7. The support frame 7 is connected to the first vertical support 31 through the first adjustment device 61 and to the second vertical support 32 through the second adjustment device 62. The first adjustment device 61 and the second adjustment device 62 are connected by a connecting rod 11.

[0046] Please see Figure 2 Each of the two support frames 7 is equipped with a bearing mounting seat 15, and each bearing mounting seat 15 is equipped with a single motor grooved wheel 16. A motor is connected inside the single motor grooved wheel. The motor controls the rotation of the grooved wheel, thereby driving the arc movable rod to control the angle of the photovoltaic panel. The lower end of each bearing mounting seat 15 is equipped with an auxiliary fixing brake seat plate 17 corresponding to the single motor grooved wheel 16. Each single motor grooved wheel 16 is movably connected to the corresponding arc movable wheel rod 14. The two ends of the arc movable wheel rod of the first adjusting device 61 are connected to the first vertical bracket 31, and the two ends of the arc movable wheel rod of the second adjusting device 62 are connected to the second vertical bracket 32. The connecting rod 11 is set between the two single motor grooved wheels 16, and a manual adjusting rod 18 is set on the outer side of each single motor grooved wheel 16.

[0047] A support base 8 is provided at the bottom of the support frame 7.

[0048] Please see Figure 3 The pulsating heat pipe 9 has an L-shaped structure, including an evaporation section 19 and a condensation section 20. The evaporation section 19 is located in the horizontal section of the L-shaped structure, and the condensation section 20 is located in the vertical section of the L-shaped structure. The evaporation section 19 is mounted on the heat dissipation contact base 12, and one end of the evaporation section 19 is connected to the condensation section 20. A fin assembly 5 is mounted on the condensation section 20.

[0049] The ultrasonic transducer assembly 10 comprises sixteen units, which are spaced apart on the underside of the heat dissipation contact base 12.

[0050] Nanoparticles are added to the working fluid of the pulsating heat pipe 9. The pulsating heat pipe loaded with nanoparticles efficiently absorbs solar energy. After the solar energy is directly absorbed by the nanoparticles in the pulsating heat pipe, it is directly transferred to the ultrasonic transducer assembly 10. This breaks the limitation of the traditional solar energy absorption by the surface, transfer to the fluid, and then transfer to the heat transfer container, thus achieving efficient solar energy absorption.

[0051] The working principle of the active-passive composite heat dissipation device for solar photovoltaic equipment of the present invention is as follows:

[0052] The solar photovoltaic panel 1 absorbs solar radiation, and the heat generated is received by the pulsating heat pipe heat dissipation contact base 12 and then transferred to the evaporation section 19 of the pulsating heat pipe. The working fluid absorbs heat and evaporates and rises, and then it is transferred to the condensation section 20 of the pulsating heat pipe. The heat is dissipated under the action of the fin assembly 5. The main function of adding the fin assembly to the condensation section of the pulsating heat pipe is to increase the heat transfer area and achieve effective heat transfer.

[0053] In addition, adding nanoparticles to the working fluid and incorporating an ultrasonic transducer into the device can improve the heat transfer coefficient of the working fluid while stimulating the ultrasonic cavitation effect inside the heat pipe. This not only enhances the convective heat transfer between the fluid outside the heat pipe and the pipe wall, but also generates pulsed heat flow, effectively reducing the flow resistance and heat transfer resistance of the heat pipe and significantly enhancing its heat transfer capacity.

[0054] By using a combination of active and passive heat dissipation devices, heat dissipation on photovoltaic panel 1 is accelerated, the operating temperature of the photovoltaic panel is reduced, the photoelectric conversion efficiency of the photovoltaic panel is improved, and the service life of the entire device is extended.

[0055] The control device has two main functions:

[0056] 1. The first adjustment device 61 and the second adjustment device 62 are directly controlled by the sensor. By adjusting the single motor groove wheel 16 installed in the bearing fixing seat 15, the adjustment arc movable wheel rod 14 is driven. With the connection of the connecting rod 11, the adjustment of the arc movable wheel rod 14 will simultaneously change the tilt angle of the first vertical support 31 and the second vertical support 32, thereby adjusting the angle of the photovoltaic panel 1 so that the photovoltaic panel 1 is always in the position where the solar radiation is obtained to the maximum extent.

[0057] The addition of the manual adjustment lever 18 is mainly to facilitate the maintenance of the adjustment device by the staff. In addition, it enables manual adjustment in case of failure of the single motor groove wheel 16. The fixed brake seat plate 17 helps to fix the single motor groove wheel 16 and is also used to lock the position of the single motor groove wheel 16, reducing the risk of loosening of the single motor groove wheel 16.

[0058] Second, the function of adjusting the power of the ultrasonic transducer in real time according to the temperature of photovoltaic panel 1 is implemented. As a kind of active heat transfer enhancement technology, the power of ultrasonic heat transfer enhancement technology has different effects on the heat transfer performance of the pulsating heat pipe, so it needs to be adjusted at any time according to the needs.

[0059] In summary, the active-passive composite heat dissipation device for solar photovoltaic equipment of the present invention has the following characteristics:

[0060] (1) This invention introduces an L-shaped pulsating heat pipe and adds nanofluid to the working fluid. Utilizing the high variability and adaptability of the pulsating heat pipe, the evaporation section of the heat pipe directly contacts the photovoltaic panel for heat exchange, improving the structural compactness of the heat pipe and facilitating installation. Furthermore, the nanoparticles, due to their high thermal conductivity, large surface-to-volume ratio, and viscosity variation, increase the thermal conductivity of the working fluid, thereby enhancing the heat transfer capacity of the heat pipe. The entire heat transfer process is highly efficient, effectively reducing the operating temperature of the photovoltaic panel, improving its photoelectric conversion efficiency, and extending the service life of the entire device.

[0061] (2) This invention uses ultrasonic active heat transfer enhancement technology. By stimulating the ultrasonic cavitation effect inside the heat pipe, its main working mechanism is acoustic cavitation. Applying ultrasonic cavitation to the oscillating flow heat pipe will produce a dual effect: first, it enhances the convective heat transfer between the fluid outside the heat pipe and the pipe wall; second, it generates pulsed heat flow, which effectively reduces the flow resistance and heat transfer resistance of the heat pipe and enhances the heat transfer capacity. This will also have a certain impact on the pulsation mechanism inside the heat pipe. In addition, the addition of ultrasonic waves can further increase the dispersion effect of nanoparticles inside the heat pipe. The active and passive composite heat dissipation device can significantly improve the working efficiency of the photovoltaic panel and reduce the risk of damage.

[0062] (3) The present invention directly controls the adjustment device through the control device to achieve rapid adjustment of the photovoltaic panel angle, so that the photovoltaic panel can obtain more solar radiation; the design of the manual adjustment rod facilitates the maintenance of the adjustment device by the staff and enables manual adjustment when the equipment fails; in addition, the applied power of the ultrasonic wave can be adjusted in real time to adjust the heat transfer performance of the device, so that the photovoltaic panel can obtain solar radiation as much as possible and maintain the best working state while operating at full capacity.

[0063] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A combined active and passive heat dissipation device for solar photovoltaic equipment, characterized in that, The system includes a support frame, on which a photovoltaic panel (1) is mounted. A pulsating heat pipe (9) is mounted below the photovoltaic panel (1). The pulsating heat pipe (9) is fixedly connected to the support frame via a fixing bracket. A heat dissipation contact base (12) is mounted on the lower side of the pulsating heat pipe (9). An ultrasonic transducer assembly (10) is mounted on the lower side of the heat dissipation contact base (12). An adjustment device is mounted below the support frame. The adjustment device and the ultrasonic transducer assembly (10) are electrically connected to a control device. The ultrasonic transducer assembly (10) includes multiple ultrasonic transducer assemblies (10), which are spaced apart on the heat dissipation contact base (12). The support includes a first horizontal support (21), a second horizontal support (22), a first vertical support (31), and a second vertical support (32). The first horizontal support (21), the second horizontal support (22), the first vertical support (31), and the second vertical support (32) are arranged in a grid pattern. The lower part of the support is connected to the support frame (7) through an adjustment device. The adjustment device includes a first adjustment device (61) and a second adjustment device (62). The first adjustment device (61) and the second adjustment device (62) are respectively installed on the upper part of the corresponding support frame (7). One support frame (7) is connected to the first vertical support (31) through the first adjustment device (61), and the other support frame (7) is connected to the second vertical support (32) through the second adjustment device (62). The first adjustment device (61) and the second adjustment device (62) are connected by a connecting rod (11). The pulsating heat pipe (9) has an L-shaped structure, including an evaporation section (19) and a condensation section (20). The evaporation section (19) is located in the horizontal section of the L-shaped structure, and the condensation section (20) is located in the vertical section of the L-shaped structure. The evaporation section (19) is mounted on the heat dissipation contact base (12). One end of the evaporation section (19) is connected to the condensation section (20), and a fin assembly (5) is installed on the condensation section (20).

2. The active-passive composite heat dissipation device for solar photovoltaic equipment according to claim 1, characterized in that, Each support frame (7) is provided with a bearing fixing seat (15), and each bearing fixing seat (15) is provided with a single motor groove wheel (16). The lower end of each bearing fixing seat (15) is provided with an auxiliary fixing brake seat plate (17) corresponding to the single motor groove wheel (16). Each single motor groove wheel (16) is movably connected to the corresponding arc movable wheel rod (14). The two ends of the arc movable wheel rod of the first adjustment device (61) are respectively connected to the first vertical support (31), and the two ends of the arc movable wheel rod of the second adjustment device (62) are respectively connected to the second vertical support (32). The connecting rod (11) is set between the two single motor groove wheels (16).

3. The active-passive composite heat dissipation device for solar photovoltaic equipment according to claim 2, characterized in that, A manual adjustment lever (18) is provided on the outside of the single motor groove wheel (16).

4. The active-passive composite heat dissipation device for solar photovoltaic equipment according to claim 1, characterized in that, The photovoltaic panel (1) comprises multiple panels, which are arranged sequentially on the support.

5. The active-passive composite heat dissipation device for solar photovoltaic equipment according to claim 1, characterized in that, Nanoparticles are added inside the pulsating heat pipe (9).

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