Solar energy photo-thermal photovoltaic combined heat collecting equipment

Abstract

The application discloses a solar light-heat photovoltaic composite heat collecting equipment, and particularly relates to the technical field of solar heat collectors, which comprises a mounting seat, a light-heat reflecting and condensing device is rotatably installed on the upper portion of the mounting seat, a photovoltaic-light-heat composite component for generating electricity and collecting light-heat is arranged on the outer surface of the light-heat reflecting and condensing device, and cleaning devices for cleaning the light-heat reflecting and condensing device and the photovoltaic-light-heat composite component are arranged on the two sides of the outer surface of the photovoltaic-light-heat composite component. The solar light-heat photovoltaic composite heat collecting equipment can make more solar radiation energy converge to the surface of the photovoltaic-light-heat composite component by virtue of the light condensing effect of the large-size reflecting mirror, thereby providing sufficient light energy support for the photoelectric conversion process of the photovoltaic unit, ensuring that the photoelectric effect is efficiently carried out, and on the other hand, the capturing of solar heat energy by the light-heat unit is strengthened, and the heat energy collecting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of solar thermal collector technology, and in particular to a solar thermal photovoltaic composite collector device. Background Technology

[0002] Photovoltaic power generation is based on the photovoltaic effect, which uses solar cell modules to directly convert solar energy into electrical energy. Of the sunlight that shines on the surface of the photovoltaic cell, only a portion is reflected, and only a portion of the light that enters the solar cell can cause electron transitions to generate photocurrent. The majority of the light is dissipated as heat. In order to improve the utilization efficiency of solar energy, it is necessary to use a thermo-photovoltaic composite heat collection device to utilize this part of the heat energy.

[0003] Chinese Patent Publication No. CN120140963A discloses a solar thermal photovoltaic composite heat collection device and method, including a photovoltaic panel and a heat collection component. The heat collection component includes a bracket, a mounting frame, two engaging blocks, two first locking mechanisms, two second locking mechanisms, a heat-conducting shell, multiple partitions, a sealing plate, multiple screws, a water inlet pipe, a water outlet pipe, a moving mechanism, and a cleaning brush mechanism. During operation, the two first locking mechanisms release the two engaging blocks, the mounting frame rotates to bring the photovoltaic panel to a vertical position, the two second locking mechanisms lock the two engaging blocks, diluted acid cleaning solution is introduced through the water outlet pipe to clean the scale in the water flow channel, multiple screws are then unscrewed, the sealing plate is removed for cleaning, and the moving mechanism is activated to drive the cleaning brush mechanism to clean along the water flow channel. This solves the problem of inconvenient cleaning in existing solar thermal photovoltaic composite heat collection devices. However, in actual use, this device cannot efficiently collect sunlight, resulting in low heat collection efficiency and low comprehensive utilization rate of solar radiation energy. Summary of the Invention

[0004] The main objective of this invention is to provide a solar thermal photovoltaic composite heat collection device that can effectively solve the problem of low heat collection efficiency and low comprehensive utilization rate of solar radiation energy due to the inefficient collection of sunlight.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A solar thermal photovoltaic composite collector includes a mounting base. A reflective concentrator for reflecting solar heat is rotatably mounted on the upper part of the mounting base. The reflective concentrator is connected to an external control system. A photovoltaic-thermal composite module for generating electricity and collecting solar heat is disposed in the middle of the outer surface of the reflective concentrator. The two sides of the outer surface of the photovoltaic-thermal composite module are connected to an external heat exchange system, and the photovoltaic-thermal composite module is connected to an external battery. Cleaning devices for cleaning the reflective concentrator and the photovoltaic-thermal composite module are disposed on the two sides of the outer surface of the photovoltaic-thermal composite module.

[0007] Preferably, the reflective focusing device includes a mounting frame, with connectors provided at the middle of both sides of the outer surface of the mounting frame. The two connectors are rotatably mounted on the upper sides of the mounting base. The outer surfaces of the two connectors that are far apart from each other are provided with transmission components fixedly mounted on the upper part of the outer surface of the mounting base. The two transmission components are connected to an external control system. A parabolic reflector is provided on the inner side of the outer surface of the mounting frame.

[0008] Preferably, the photovoltaic-photothermal composite module includes two support frames 1 and 2. The two support frames 1 are respectively fixedly installed on the upper ends of two connectors. The support frame 2 is fixedly installed in the middle of the support frame 1. A photovoltaic mechanism is provided on the side of the outer surface of the two support frames 1 that is close to each other. The middle of the outer surface of the photovoltaic mechanism is fixedly connected to the inner surface of the support frame 2. A heat collection mechanism is provided in the middle of the photovoltaic mechanism. Both ends of the heat collection mechanism extend to the outside of the photovoltaic mechanism.

[0009] Preferably, the photovoltaic mechanism is connected to an external battery, and the heat collection mechanism is connected to an external heat exchange system.

[0010] Preferably, the photovoltaic mechanism includes two photovoltaic support substrates. The two ends of the two photovoltaic support substrates are fixedly connected to the outer surfaces of the two support frames, and the middle of the outer surfaces of the two photovoltaic support substrates is fixedly connected to the inner surface of the support frame. Two photovoltaic panels are provided on the side of the outer surfaces of the two photovoltaic support substrates that are close to each other. The two photovoltaic panels are arranged vertically, and partitions are provided at both ends of the two photovoltaic panels.

[0011] Preferably, the heat collection mechanism includes two connecting pipes, which are fixedly installed in the middle of two partitions. The ends of the two connecting pipes that are far apart from each other are connected to an external heat exchange system. The ends of the two connecting pipes that are close to each other are provided with guide pipes, and photothermal heat absorption components are provided at the upper and lower ends of the two guide pipes.

[0012] Preferably, the cleaning device includes two servo motors, which are respectively fixedly installed on the outer surfaces of two support frames 1, and the installation positions of the two servo motors 41 are not on the same side. The output ends of the two servo motors are provided with threaded rods, and the two threaded rods are rotatably installed on the outer surfaces of the two support frames 1 and 2. Cleaning mechanisms are provided on both sides of the outer surface of the threaded rods.

[0013] Preferably, the threads on both sides of the outer surfaces of the two threaded rods are opposite.

[0014] Preferably, the cleaning mechanism includes two sliding bases, which are slidably mounted on the outer surfaces of two photovoltaic support substrates. The middle portions of the two sliding bases are threadedly connected to the outer surfaces of two threaded rods. Two cleaning actuators are provided on the side of the outer surfaces of the two sliding bases that are close to each other. The two cleaning actuators are adapted to be used with the two photovoltaic panels. A connecting frame is fixedly installed on the side of the outer surfaces of the two sliding bases that are far from each other. A cleaning plate is provided at the lower part of the two connecting frames. The cleaning plate is adapted to be used with a parabolic reflector.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this invention, by setting up a reflective concentrating device, the reflective concentrating device can reflect incident sunlight onto the light-receiving surface of the photovoltaic-photothermal composite module. Relying on the concentrating effect of the large-size reflective mirror, more solar radiation energy can be gathered onto the surface of the photovoltaic-photothermal composite module. On the one hand, it provides sufficient light energy support for the photoelectric conversion process of the photovoltaic unit, ensuring the efficient operation of the photoelectric effect. On the other hand, it can also enhance the capture of solar heat energy by the photothermal unit and improve the heat collection efficiency.

[0017] 2. In this invention, by setting up a photovoltaic-photothermal composite component, during the process of the reflective concentrator reflecting sunlight to the light-receiving surface of the photovoltaic mechanism, the photovoltaic mechanism can complete photoelectric conversion based on the photovoltaic effect. At the same time, the waste heat generated by sunlight irradiating the surface of the photovoltaic mechanism will be efficiently captured by the heat collection mechanism. Then, the heat energy collected by the heat collection mechanism will be introduced into the external heat exchange system through the heat conduction medium to realize the cascade utilization of heat energy.

[0018] 3. In this invention, by setting up a photovoltaic mechanism and layering photovoltaic panels, the system effectively avoids the problem of wasted light energy under a single photovoltaic panel layout by adapting to the capture requirements of reflected light and direct light respectively, and significantly improves the overall utilization rate of solar radiation energy of the system.

[0019] 4. In this invention, by setting up a cleaning device, dust will gradually accumulate on the surface of the parabolic reflector and photovoltaic panel during the long-term operation of the solar thermal photovoltaic composite heat collection equipment. If the dust accumulation reaches a certain thickness, on the one hand, it will weaken the solar reflection efficiency of the parabolic reflector and reduce the light concentration effect; on the other hand, the photovoltaic panel will block the incident light due to dust coverage, causing the photoelectric conversion efficiency to decrease, ultimately leading to a decrease in the system's solar energy utilization rate and a decrease in the overall energy collection efficiency. By thoroughly cleaning the surface of the parabolic reflector and photovoltaic panel, its optical performance and energy conversion efficiency can be restored. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the reflective focusing device of the present invention;

[0023] Figure 4 This is a schematic diagram of the photovoltaic-photothermal composite module structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the photovoltaic mechanism structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the heat collection mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the cleaning device structure of the present invention. Figure 1 ;

[0027] Figure 8 This is a schematic diagram of the cleaning device structure of the present invention. Figure 2 ;

[0028] Figure 9 This is a schematic diagram of the cleaning mechanism structure of the present invention.

[0029] In the diagram: 1. Mounting base; 2. Reflective concentrator; 21. Mounting frame; 22. Connector; 23. Parabolic reflector; 24. Transmission component; 3. Photovoltaic-photothermal composite module; 31. Support frame one; 32. Support frame two; 33. Photovoltaic mechanism; 331. Photovoltaic support substrate; 332. Photovoltaic panel; 333. Partition plate; 34. Heat collection mechanism; 341. Connecting pipe; 342. Guide pipe; 343. Photothermal heat absorption component; 4. Cleaning device; 41. Servo motor; 42. Threaded rod; 43. Cleaning mechanism; 431. Sliding base; 432. Cleaning actuator; 433. Connecting frame; 434. Cleaning plate. Detailed Implementation

[0030] 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 embodiments of the present invention, and not all embodiments. 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.

[0031] Example 1: As Figure 1 and Figure 2As shown, this embodiment discloses a solar thermal photovoltaic composite heat collection device, including a mounting base 1. A reflective concentrator 2 for reflecting light and heat is rotatably mounted on the upper part of the mounting base 1. The reflective concentrator 2 is connected to an external control system. A photovoltaic-thermal composite component 3 for generating electricity and collecting light and heat is disposed in the middle of the outer surface of the reflective concentrator 2. The two sides of the outer surface of the photovoltaic-thermal composite component 3 are connected to an external heat exchange system, and the photovoltaic-thermal composite component 3 is connected to an external battery.

[0032] Specifically, during the operation of the solar thermal photovoltaic composite heat collection equipment, the reflective concentrator 2 can reflect the incident sunlight onto the light-receiving surface of the photovoltaic-thermal composite module 3. Relying on the concentrating effect of the large-size reflective mirror, more solar radiation energy can be gathered on the surface of the photovoltaic-thermal composite module 3. On the one hand, it provides sufficient light energy support for the photoelectric conversion process of the photovoltaic unit, ensuring the efficient operation of the photoelectric effect. On the other hand, it can also enhance the capture of solar heat energy by the solar thermal unit and improve the heat collection efficiency.

[0033] Furthermore, during the process of the reflective concentrator 2 reflecting sunlight onto the surface of the photovoltaic-photothermal composite module 3, the external control system drives the reflective concentrator 2 to track and rotate according to the real-time changes in the solar azimuth and elevation angles, thereby achieving precise guidance of solar radiation energy and ensuring that the photovoltaic-photothermal composite module 3 continuously and efficiently completes the photoelectric conversion and photothermal collection processes simultaneously.

[0034] In order to reflect sunlight to the photovoltaic-thermal composite module 3, such as Figure 3 As shown, the reflective focusing device 2 includes a mounting frame 21. Connectors 22 are provided on the middle of both sides of the outer surface of the mounting frame 21. The two connectors 22 are rotatably mounted on the upper sides of the mounting base 1. Transmission components 24 are fixedly mounted on the upper part of the outer surface of the mounting base 1 on the side of the outer surface of the two connectors 22 that are far apart from each other. The two transmission components 24 are connected to an external control system. A parabolic reflector 23 is provided on the inner side of the outer surface of the mounting frame 21.

[0035] Specifically, during the process of the reflective concentrator 2 reflecting sunlight onto the surface of the photovoltaic-photothermal composite module 3, the external control system will drive the connector 22 to rotate through two transmission components 24 according to the real-time changes of the solar azimuth and elevation angles. The connector 22 will then drive the parabolic reflector 23 to rotate through the linkage mounting frame 21, thereby dynamically adjusting the spatial attitude angle of the parabolic reflector 23 to achieve precise guidance and efficient convergence of solar radiation.

[0036] Furthermore, the parabolic reflector 23 uses a nano-composite silver coating, which increases the reflectivity from the traditional 95% to over 98%, enhancing its light-gathering ability.

[0037] Furthermore, the control system's built-in motor controller, solar position sensor, temperature sensor, and PLC programmable logic controller enable automatic control of the system's rotation angle, allowing the reflector to track the sun's trajectory in real time, as well as monitoring parameters such as the temperature of the heat collection tube and the flow rate of the medium, ensuring the system's safe and efficient operation.

[0038] In order to generate energy, such as Figure 4 As shown, the photovoltaic-photothermal composite module 3 includes two support frames 31 and two support frames 32. The two support frames 31 are fixedly installed on the upper ends of the two connectors 22 respectively. The two support frames 32 are fixedly installed in the middle of the support frames 31. A photovoltaic mechanism 33 is provided on the side of the outer surface of the two support frames 31 that is close to each other. The middle of the outer surface of the photovoltaic mechanism 33 is fixedly connected to the inner surface of the support frame 32. A heat collection mechanism 34 is provided in the middle of the photovoltaic mechanism 33. Both ends of the heat collection mechanism 34 extend to the outside of the photovoltaic mechanism 33.

[0039] Furthermore, the photovoltaic mechanism 33 is connected to an external battery, and the heat collection mechanism 34 is connected to an external heat exchange system.

[0040] Specifically, during the process of the reflective concentrator 2 reflecting sunlight onto the surface of the photovoltaic mechanism 33, the photovoltaic mechanism 33 can undergo a photoelectric reaction. At the same time, the heat generated during the process of sunlight reflecting onto the surface of the photovoltaic mechanism 33 will be collected by the heat collection mechanism 34 and then introduced into the external heat exchange system.

[0041] Furthermore, during the process of the reflective concentrator 2 reflecting sunlight onto the light-receiving surface of the photovoltaic mechanism 33, the photovoltaic mechanism 33 can complete photoelectric conversion based on the photovoltaic effect. At the same time, the waste heat generated by sunlight irradiating the surface of the photovoltaic mechanism 33 will be efficiently captured by the heat collection mechanism 34. Subsequently, the heat energy collected by the heat collection mechanism 34 will be introduced into the external heat exchange system through the heat conduction medium to realize the cascade utilization of heat energy.

[0042] Furthermore, a heat exchange system typically consists of a heat exchange unit, a circulating power unit, a heat storage unit, a working fluid control unit, and a supporting pipeline network. These components work together to achieve a closed loop of "heat collection-transmission-storage-utilization".

[0043] In order to generate electricity through light, such as Figure 5As shown, the photovoltaic mechanism 33 includes two photovoltaic support substrates 331. The two ends of the two photovoltaic support substrates 331 are fixedly connected to the outer surfaces of the two support frames 31 respectively, and the middle of the outer surfaces of the two photovoltaic support substrates 331 are fixedly connected to the inner surface of the support frame 32. Two photovoltaic panels 332 are arranged on the side of the outer surfaces of the two photovoltaic support substrates 331 that are close to each other. The two photovoltaic panels 332 are arranged vertically, and partitions 333 are provided at both ends of the two photovoltaic panels 332.

[0044] Specifically, two photovoltaic panels 332 are respectively laid on the outer surface of two photovoltaic support substrates 331. The light-receiving surface of the lower photovoltaic panel 332 faces the parabolic reflector 23, which can receive the reflected light converged by the parabolic reflector 23 and complete the photoelectric conversion. The upper photovoltaic panel 332 faces the sun in a direct light-receiving posture, directly capturing the direct sunlight to achieve photoelectric conversion.

[0045] Furthermore, if the upper photovoltaic panel 332 is not configured, direct sunlight will only act on the lower photovoltaic panel 332, which may result in insufficient capture of direct sunlight due to factors such as the deviation of the light receiving angle and the obstruction of the parabolic reflector 23. The layered layout of the photovoltaic panel 332, by adapting to the capture requirements of reflected light and direct sunlight respectively, effectively avoids the problem of light energy waste under a single photovoltaic panel 332 layout, and significantly improves the overall utilization rate of solar radiation energy of the system.

[0046] In order to collect heat energy, such as Figure 6 As shown, the heat collection mechanism 34 includes two connecting pipes 341, which are fixedly installed in the middle of two partitions 333. The ends of the two connecting pipes 341 that are far apart from each other are connected to an external heat exchange system. The ends of the two connecting pipes 341 that are close to each other are provided with guide pipes 342. The upper and lower ends of the two guide pipes 342 are provided with photothermal heat absorption components 343.

[0047] Specifically, during the photoelectric reaction of the two photovoltaic panels 332, the two photovoltaic panels 332 will generate heat when exposed to sunlight. The heat generated on the surface of the two photovoltaic panels 332 will be absorbed by the two photothermal heat absorption components 343, and then introduced into the external heat exchange system through the heat-conducting medium flowing inside them.

[0048] During the photoelectric conversion process of the two photovoltaic panels 332, the photovoltaic panels 332 will experience a temperature rise due to energy loss during the photoelectric conversion process caused by solar irradiation. The redundant heat formed on their surface can be efficiently captured by the corresponding two sets of photothermal heat absorption components 343. Subsequently, this part of the heat is transferred through the heat-conducting medium circulating inside the photothermal heat absorption components 343, such as antifreeze water-based heat transfer fluid or low-boiling-point organic heat transfer oil, and finally introduced into the external heat exchange system to realize the recycling of photothermal resources.

[0049] Example 2: This example further improves the cleaning device 4 based on Example 1, such as... Figure 1 and Figure 2 As shown, cleaning devices 4 are provided on both sides of the outer surface of the photovoltaic-photothermal composite module 3 to clean the reflective concentrating device 2 and the photovoltaic-photothermal composite module 3.

[0050] In order to clean the surfaces of the reflective concentrator 2 and the photovoltaic-photothermal composite module 3, and to prevent dust accumulation on their surfaces during long-term use, which could affect the normal operation of the equipment, such as... Figure 7 and Figure 8 As shown, the cleaning device 4 includes two servo motors 41, which are fixedly installed on the outer surfaces of the two support frames 31 respectively. The installation positions of the two servo motors 41 are not on the same side. The output ends of the two servo motors 41 are provided with threaded rods 42. The two threaded rods 42 are rotatably installed on the outer surfaces of the two support frames 31 and the second support frame 32. Cleaning mechanisms 43 are provided on both sides of the outer surface of the threaded rods 42.

[0051] Furthermore, the threads on both sides of the outer surface of the two threaded rods 42 are opposite.

[0052] Specifically, after the solar thermal photovoltaic composite collector has been running for a period of time, a certain amount of dust will accumulate on the surface of the parabolic reflector 23 and the photovoltaic panel 332. If the dust is thick, it will reduce the effect of the parabolic reflector 23 in reflecting sunlight. At the same time, the photovoltaic panel 332 will also reduce the efficiency of photoelectric conversion due to the thick dust blocking sunlight, thus reducing the utilization rate of solar energy and resulting in a decrease in energy collection efficiency.

[0053] Furthermore, after the solar thermal photovoltaic composite collector has been running for a period of time, the staff or the corresponding control equipment shall periodically start the cleaning device 4 to clean the surface of the parabolic reflector 23 and the photovoltaic panel 332.

[0054] Furthermore, when it is necessary to clean the surfaces of the parabolic reflector 23 and the photovoltaic panel 332, the two servo motors 41 drive the two threaded rods 42 to rotate respectively. Since the threads on both sides of the outer surface of the two threaded rods 42 are opposite, the two threaded rods 42 will drive the two cleaning mechanisms 43 to move in opposite directions. When the two cleaning mechanisms 43 move to the position where they are closest or farthest apart, the servo motors 41 rotate in the opposite direction, thereby enabling the two cleaning mechanisms 43 to reciprocate. During the movement of the two cleaning mechanisms 43, the cleaning mechanisms 43 can clean the surfaces of the parabolic reflector 23 and the photovoltaic panel 332.

[0055] Specifically, during the long-term operation of the solar thermal photovoltaic composite collector, dust will gradually accumulate on the surfaces of the parabolic reflector 23 and the photovoltaic panel 332. If the dust accumulation reaches a certain thickness, on the one hand, it will weaken the solar reflection efficiency of the parabolic reflector 23 and reduce the light concentration effect; on the other hand, the photovoltaic panel 332 will be blocked by the dust, causing the photoelectric conversion efficiency to decrease, ultimately leading to a decrease in the system's solar energy utilization rate and a reduction in the overall energy collection efficiency.

[0056] Furthermore, to address this issue, once the equipment has reached a set operating cycle, the cleaning device 4 needs to be activated periodically by staff or through automatic control to clean the surfaces of the parabolic reflector 23 and the photovoltaic panel 332.

[0057] The specific cleaning process is as follows: Two servo motors 41 drive the corresponding threaded rods 42 to rotate. Since the outer surfaces of the two threaded rods 42 are machined with threads in opposite directions, they drive the two cleaning mechanisms 43 to move in opposite directions. When the cleaning mechanism 43 reaches the closest or farthest position of its travel limit, the servo motors 41 automatically reverse their rotation, realizing the reciprocating motion of the cleaning mechanism 43. During the reciprocating motion of the cleaning mechanism 43, the surfaces of the parabolic reflector 23 and the photovoltaic panel 332 can be thoroughly cleaned to restore their optical performance and energy conversion efficiency.

[0058] In order to clean the surfaces of the parabolic reflector 23 and the photovoltaic panel 332, such as Figure 9 As shown, the cleaning mechanism 43 includes two sliding bases 431, which are slidably mounted on the outer surfaces of two photovoltaic support substrates 331. The middle parts of the two sliding bases 431 are threadedly connected to the outer surfaces of two threaded rods 42. Two cleaning actuators 432 are provided on the side of the outer surfaces of the two sliding bases 431 that are close to each other. The two cleaning actuators 432 are adapted to the two photovoltaic panels 332. A connecting frame 433 is fixedly installed on the side of the outer surfaces of the two sliding bases 431 that are far from each other. A cleaning plate 434 is provided at the lower part of the two connecting frames 433. The cleaning plate 434 is adapted to the parabolic reflector 23.

[0059] Specifically, during the rotation of the threaded rod 42, the threaded rods 42 on both sides will drive the two sliding bases 431 to slide on the outer surface of the two photovoltaic support substrates 331 respectively. During the sliding of the sliding bases 431, the two sliding bases 431 will drive the two cleaning actuators 432 to move. During this process, the two cleaning actuators 432 will clean the surface of the two photovoltaic panels 332 respectively.

[0060] Furthermore, as the two sliding bases 431 move, they also drive the cleaning plates 434 to move, and the two cleaning plates 434 clean the surface of the parabolic reflector 23.

[0061] Specifically, during the rotation of the threaded rod 42, the threaded rods 42 on both sides will drive the corresponding sliding bases 431 to slide smoothly along the outer surface of the photovoltaic support substrates 331 on both sides. When the sliding bases 431 slide, they will simultaneously drive the two cleaning actuators 432 to move synchronously. During this process, the two cleaning actuators 432 can perform targeted dust removal and cleaning on the light-receiving surfaces of the two photovoltaic panels 332 respectively, ensuring the effective light-receiving area and photoelectric conversion efficiency of the photovoltaic panels 332.

[0062] At the same time, during the translation process, the sliding base 431 will also drive the two cleaning plates 434 to move in tandem through the linkage structure, so that the two cleaning plates 434 can simultaneously clean the reflective surface of the parabolic reflector 23, restore the high reflectivity and light-gathering effect of the reflector, and ensure the stable light and heat collection efficiency of the system.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solar thermal photovoltaic composite collector, comprising a mounting base (1), characterized in that: A reflective concentrator (2) for reflecting light and heat is rotatably mounted on the upper part of the mounting base (1). The reflective concentrator (2) is connected to an external control system. A photovoltaic-photothermal composite component (3) for generating electricity and collecting light and heat is provided in the middle of the outer surface of the reflective concentrator (2). The two sides of the outer surface of the photovoltaic-photothermal composite component (3) are connected to an external heat exchange system. The photovoltaic-photothermal composite component (3) is also connected to an external battery. A cleaning device (4) for cleaning the reflective concentrator (2) and the photovoltaic-photothermal composite component (3) is provided on both sides of the outer surface of the photovoltaic-photothermal composite component (3). The reflective focusing device (2) includes a mounting frame (21). Connectors (22) are provided on the middle of both sides of the outer surface of the mounting frame (21). The two connectors (22) are rotatably mounted on the upper sides of the mounting base (1). A transmission component (24) is fixedly mounted on the upper part of the outer surface of the mounting base (1) on the side of the outer surface of the two connectors (22) that is far away from each other. The two transmission components (24) are connected to an external control system. A parabolic reflector (23) is provided on the inner side of the outer surface of the mounting frame (21). The photovoltaic-photothermal composite module (3) includes two support frames (31) and two support frames (32). The two support frames (31) are fixedly installed on the upper ends of two connectors (22). The support frame (32) is fixedly installed in the middle of the support frame (31). A photovoltaic mechanism (33) is provided on the side of the outer surface of the two support frames (31) that is close to each other. The middle part of the outer surface of the photovoltaic mechanism (33) is fixedly connected to the inner surface of the support frame (32). A heat collection mechanism (34) is provided in the middle of the photovoltaic mechanism (33). Both ends of the heat collection mechanism (34) extend to the outside of the photovoltaic mechanism (33). The photovoltaic mechanism (33) includes two photovoltaic support substrates (331). The two ends of the two photovoltaic support substrates (331) are fixedly connected to the outer surfaces of the two support frames (31) respectively, and the middle of the outer surfaces of the two photovoltaic support substrates (331) is fixedly connected to the inner surface of the support frame (32). Two photovoltaic panels (332) are provided on the side of the outer surfaces of the two photovoltaic support substrates (331) that are close to each other. The two photovoltaic panels (332) are distributed vertically, and partitions (333) are provided at both ends of the two photovoltaic panels (332). The cleaning device (4) includes two servo motors (41). The two servo motors (41) are respectively fixedly installed on the outer surfaces of two support frames (31), and the installation positions of the two servo motors (41) are not on the same side. The output ends of the two servo motors (41) are provided with threaded rods (42). The two threaded rods (42) are rotatably installed on the outer surfaces of the two support frames (31) and the second support frame (32). Cleaning mechanisms (43) are provided on both sides of the outer surface of the threaded rods (42). The cleaning mechanism (43) includes two sliding bases (431), which are slidably mounted on the outer surfaces of two photovoltaic support substrates (331). The middle parts of the two sliding bases (431) are threadedly connected to the outer surfaces of two threaded rods (42). Two cleaning actuators (432) are provided on the side of the outer surfaces of the two sliding bases (431) that are close to each other. The two cleaning actuators (432) are adapted to the two photovoltaic panels (332). A connecting frame (433) is fixedly installed on the side of the outer surfaces of the two sliding bases (431) that are far from each other. A cleaning plate (434) is provided at the lower part of the two connecting frames (433). The cleaning plate (434) is adapted to the parabolic reflector (23).

2. The solar thermal photovoltaic composite collector according to claim 1, characterized in that: The photovoltaic mechanism (33) is connected to an external battery, and the heat collection mechanism (34) is connected to an external heat exchange system.

3. The solar thermal photovoltaic composite collector according to claim 1, characterized in that: The heat collection mechanism (34) includes two connecting pipes (341), which are fixedly installed in the middle of two partitions (333). The ends of the two connecting pipes (341) that are far apart from each other are connected to an external heat exchange system. The ends of the two connecting pipes (341) that are close to each other are provided with guide pipes (342), and photothermal heat absorption components (343) are provided at both the upper and lower ends of the two guide pipes (342).

4. The solar thermal photovoltaic composite collector according to claim 1, characterized in that: The threads on both sides of the outer surface of the two threaded rods (42) are opposite.

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