A photovoltaic-photothermal coupling power generation system

Abstract

The present application relates to the technical field of solar power generation, in particular to a photovoltaic and photo-thermal coupling power generation system, which comprises a frame, a detachable upper layer semi-transparent photovoltaic cell, a photo-thermal reflector and a lower layer photovoltaic cell are sequentially arranged in the frame from top to bottom, a first middle support assembly is arranged between the upper layer semi-transparent photovoltaic cell and the photo-thermal reflector, and a second middle support assembly is arranged between the photo-thermal reflector and the lower layer photovoltaic cell.The technical scheme of the present application connects the upper layer semi-transparent photovoltaic cell, the photo-thermal reflector and the lower layer photovoltaic cell in the frame in a detachable manner, thereby avoiding the problem that the photovoltaic cell and the photo-thermal reflector are exposed to the environment and their performance is reduced, improving the stability and service life of the system, and the detachable manner facilitates the disassembly and replacement of each component, improving the applicability and operability of the system, while ensuring the maximum utilization of light energy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar power generation, in particular to a photovoltaic-thermal coupling power generation system. BACKGROUND

[0002] With the increasing global energy crisis and environmental pollution problems, the use of traditional energy has been unable to meet the demand for sustainable development. As a clean and renewable energy, solar energy has been increasingly valued by governments and scientific research institutions around the world. Solar energy utilization technology is mainly divided into photovoltaic power generation technology and solar thermal power generation technology, among which, photovoltaic (PV) technology and solar thermal (CSP) technology each has its own advantages and occupies an important position in different application scenarios. Photovoltaic technology converts solar light into electrical energy through photovoltaic cells, has the advantages of easy installation and low operating cost, and is widely used in residential, commercial and large-scale photovoltaic power stations and other fields. However, photovoltaic cells can only utilize visible light and ultraviolet light in sunlight, and cannot fully utilize the infrared part of sunlight, resulting in limited light energy utilization efficiency. On the contrary, solar thermal power generation technology converts solar light into heat through a heat collector, which is suitable for high-temperature industrial applications and large-scale power generation systems. However, the light energy conversion efficiency and system complexity of solar thermal technology are relatively high, and in some cases, the environmental conditions (such as the time and intensity of sunlight) are relatively high, which limits its popular application.

[0003] In order to overcome the limitations of single photovoltaic or solar thermal technology, in recent years, photovoltaic-thermal coupling technology has gradually become the focus of research. By combining photovoltaic cells with solar thermal reflectors, photovoltaic cells can absorb visible light and ultraviolet light for power generation, and solar thermal reflectors can reflect the sunlight not absorbed by photovoltaic cells to solar thermal collectors for heat power generation, thereby simultaneously utilizing the advantages of photovoltaic and solar thermal technologies. However, existing photovoltaic-thermal coupling systems still face some technical bottlenecks.

[0004] Existing photovoltaic-thermal coupling systems generally install photovoltaic cells and solar thermal reflectors in different structures or positions, although this combination can improve light energy utilization efficiency to some extent, but its installation and maintenance are relatively complex, and require a large space and high installation precision. In addition, these systems usually do not consider the disassembly and replacement of components, which makes the system susceptible to environmental factors (such as wind and sand, corrosion, temperature changes, etc.) in long-term use, reducing the stability and service life of the system.

[0005] Further, the combination of photovoltaic cells and light-thermal mirrors in the existing coupling structure is relatively single, and the cooperative work between various components cannot be fully optimized. The structural design and material selection of the system have a great influence on the overall performance and durability, especially in harsh environments. How to improve the physical stability and durability of the structure is still a problem to be solved. Therefore, how to design a more efficient, convenient and stable photovoltaic-thermal coupling structure to improve the light energy utilization efficiency and simplify the installation, disassembly and maintenance process of the system has become the core challenge of current technical research. The present application aims to solve the problems in the prior art and proposes a new photovoltaic-thermal coupling power generation system. SUMMARY

[0006] The present application aims to provide a photovoltaic-thermal coupling power generation system with high light energy utilization efficiency, easy disassembly and installation of components in the system, easy operation and maintenance, and stronger system stability.

[0007] The present application provides a photovoltaic-thermal coupling power generation system, comprising a frame, the inside of the frame is provided with a detachable upper layer semi-transparent photovoltaic cell, a light-thermal mirror and a lower layer photovoltaic cell from top to bottom, a first middle support assembly is arranged between the upper layer semi-transparent photovoltaic cell and the light-thermal mirror, and a second middle support assembly is arranged between the light-thermal mirror and the lower layer photovoltaic cell.

[0008] The upper layer semi-transparent photovoltaic cell absorbs visible light and ultraviolet light for photovoltaic power generation, while transmitting infrared light; the light-thermal mirror reflects infrared light to a light-thermal collector for photo-thermal power generation; and the lower layer photovoltaic cell collects reflected light and scattered light for photovoltaic power generation.

[0009] Further, the frame comprises a top support assembly and a bottom support assembly, and two side plates are symmetrically arranged between the top support assembly and the bottom support assembly.

[0010] Further, the upper layer semi-transparent photovoltaic cell, the light-thermal mirror, the lower layer photovoltaic cell and the side plates are connected by at least one of sliding connection, magnetic connection, bolt connection or rotating buckle connection.

[0011] Further, the top support assembly, the bottom support assembly, the first middle support assembly and the second middle support assembly are support plates or two symmetrically arranged support blocks; when they are support plates, the support plates and the side plates are connected by at least one of sliding connection, bolt connection, magnetic connection or rotating buckle connection; when they are support blocks, the two support blocks are fixedly connected with the two side plates respectively.

[0012] Further, the top support assembly, the first middle support assembly, the second middle support assembly and the bottom support assembly are support plates, and the support plates are high-transmittance plates.

[0013] Further, a plurality of first sliding grooves are arranged on the two side plates respectively, and two ends of the upper layer semi-transparent photovoltaic cell, the light-heat reflector and the lower layer photovoltaic cell are arranged in the first sliding grooves respectively and can slide along the first sliding grooves.

[0014] Further, the two ends of the first sliding groove are closed ends or open ends, the open end is provided with a limiting buckle, the limiting buckle comprises a U-shaped groove, the U-shaped groove is clamped on one of the side walls of the first sliding groove, and a limiting bolt is arranged on the U-shaped groove and tightly abuts or is threadedly connected with the side wall of the first sliding groove.

[0015] Further, the upper layer semi-transparent photovoltaic cell, the light-heat reflector and the lower layer photovoltaic cell are connected with the frame by a rotating buckle, the rotating buckle comprises a rotating shaft rotatably connected to the side plate, a limiting rod is fixedly connected to the rotating shaft, and a locking piece is arranged on the side edge of the upper layer semi-transparent photovoltaic cell, the light-heat reflector and the lower layer photovoltaic cell respectively, the locking piece is sleeved on the rotating shaft, and clamping is realized by rotating the limiting rod.

[0016] Further, the material of at least one of the side plates is transparent, and a cavity in communication with the outside is arranged in the side plate, and a side edge photovoltaic cell is slidably connected in the cavity.

[0017] Further, the frame is further provided with one or two symmetrical blocking plates between the two side plates, when two blocking plates are arranged, two ends of one of the blocking plates are fixedly connected with the two side plates respectively, and the other blocking plate is hingedly connected with one of the side plates.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The upper layer semi-transparent photovoltaic cell, the light-heat reflector and the lower layer photovoltaic cell are detachably connected in the frame, which avoids the problem that the photovoltaic cell and the light-heat reflector are exposed to the environment and the performance is reduced, improves the stability and service life of the system, the detachable connection mode facilitates disassembly and replacement of each component, the system adaptability and operability are improved, the maximum utilization of light energy is ensured, and the lower layer photovoltaic cell greatly improves the utilization rate of sunlight. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0021] Figure 1 It is a side view of the photovoltaic-photothermal coupled power generation system in the embodiment 1 of the present application.

[0022] Figure 2 It is a split structure schematic diagram of the photovoltaic-photothermal coupled power generation system in the embodiment 1 of the present application.

[0023] Figure 3 It is a partial enlarged view of the connection between the limiting buckle and the first sliding groove in the embodiment 1 of the present application.

[0024] Figure 4 It is a schematic diagram of the light energy utilization principle of the photovoltaic-photothermal coupled power generation system in the embodiment 1 of the present application.

[0025] Figure 5 It is a side view of the system when the support assembly is all support blocks in the embodiment 2 of the present application.

[0026] Figure 6 It is a side view of the side plate when the support assembly is all support blocks in the embodiment 2 of the present application.

[0027] Figure 7 It is a side view of the system when the top support assembly is a support block in the embodiment 2 of the present application.

[0028] Figure 8 It is a side view of the system when the first middle support assembly is a support block in the embodiment 2 of the present application.

[0029] Figure 9 It is a side view of the photovoltaic-photothermal coupled power generation system in the embodiment 3 of the present application.

[0030] Figure 10 It is a side view of the photovoltaic-photothermal coupled power generation system in the embodiment 4 of the present application.

[0031] Figure 11 It is a side view of the photovoltaic-photothermal coupled power generation system in the embodiment 5 of the present application.

[0032] Figure 12 It is a structure schematic diagram of the rotating buckle in the embodiment 5 of the present application.

[0033] Figure 13 It is a structure schematic diagram of the side plate in the embodiment 6 of the present application.

[0034] Figure 14 System side view with one side photovoltaic cell in embodiment 6 of the present application;

[0035] Figure 15 System side view with two side photovoltaic cells in embodiment 6 of the present application;

[0036] Figure 16 Frame structure schematic diagram with two blocking plates in embodiment 7 of the present application.

[0037] Explanation of reference numerals: 1 - upper layer semi-transparent photovoltaic cell; 2 - light-heat reflecting mirror; 3 - lower layer photovoltaic cell; 4 - first middle support assembly; 5 - second middle support assembly; 6 - side plate; 601 - first sliding groove; 602 - limiting plate; 603 - cavity; 604 - second sliding groove; 7 - top support assembly; 8 - bottom support assembly; 9 - U-shaped groove; 901 - limiting bolt; 10 - rotating buckle; 1001 - rotating shaft; 1002 - limiting rod; 1003 - locking piece; 1004 - locking hole; 11 - magnet; 12 - fixing bolt; 13 - side photovoltaic cell; 14 - blocking plate; 15 - heat collector. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described below in conjunction with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0040] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an implied order of sequence. Thus, features defined with "first", "second" or "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly interpreted, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] Embodiment 1

[0042] A photovoltaic-photothermal coupled power generation system, as shown in Figure 1 , includes a frame, inside the frame, from top to bottom, a detachable upper layer semi-transparent photovoltaic cell 1, a photothermal reflector 2, a lower layer photovoltaic cell 3, a first middle support assembly 4 is arranged between the upper layer semi-transparent photovoltaic cell 1 and the photothermal reflector 2, and a second middle support assembly 5 is arranged between the photothermal reflector 2 and the lower layer photovoltaic cell 3. In this embodiment, the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, the lower layer photovoltaic cell 3 and the frame are in sliding connection. The lower layer photovoltaic cell 3 can be selected as opaque or semi-transparent photovoltaic cell according to actual needs.

[0043] As shown in Figure 2 , the frame includes two side plates 6, a top support assembly 7 and a bottom support assembly 8, the two side plates 6 are arranged opposite to each other between the top support assembly 7 and the bottom support assembly 8. In this embodiment, the two ends of the top support assembly 7 and the bottom support assembly 8 are respectively in sliding connection with the two side plates 6.

[0044] The top support assembly 7, the bottom support assembly 8, the first middle support assembly 4 and the second middle support assembly 5 are respectively support plates, and seven first sliding grooves 601 Figure 1 The black area in the middle represents the side wall of the first sliding groove 601, of which six first sliding grooves 601 are located on the side of the side wall; the first sliding groove 601 for mounting the top support assembly 7 is located at the top of the side plate 6, and can also be arranged at the side of the side plate 6 according to needs, the first sliding groove 601 is in U shape, and the two ends of the seven first sliding grooves 601 are respectively closed end and open end. The height of the seven first sliding grooves 601 is respectively consistent with the thickness of each component, and the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, the lower layer photovoltaic cell 3 and the two ends of the four support plates are respectively slid along the open end of the first sliding groove 601 to the closed end.

[0045] The length of the first groove 601 is slightly greater than the width of each component (in this embodiment, "each component" refers to the upper semi-transparent photovoltaic cell 1, the photothermal reflector 2, the lower photovoltaic cell 3, the top support component 7, the bottom support component 8, the first middle support component 4, and the second middle support component 5 collectively). After each component is installed in place, a blank space is left at the open end of the first groove 601 for installing a limiting buckle. Taking the bottom support component 8 as an example... Figure 3 As shown, the limiting buckle adopts a U-shaped groove 9, with a limiting hole through one side wall of the U-shaped groove 9. A limiting bolt 901 is installed in the limiting hole. After the bottom support assembly 8 is installed with the first sliding groove 601 on the side plate 6, the U-shaped groove 9 is engaged with the side wall of the first sliding groove 601, and the limiting bolt 901 is tightened so that the end of the limiting bolt 901 away from the head is tightly fitted with the side wall of the first sliding groove 601; or a corresponding threaded hole is provided on the side wall of the first sliding groove 601 so that the limiting bolt 901 is threadedly connected to the side wall of the first sliding groove 601. When designing and manufacturing the first sliding groove 601, two adjacent first sliding grooves 601 can share a side wall, and a limiting buckle is installed on the shared side wall.

[0046] During the design and manufacturing process, both ends of the first slide groove 601 can be designed as open ends. During installation, limit buckles can be installed at both ends of the first slide groove 601.

[0047] In this embodiment, the top support component 7, the first middle support component 4, the second middle support component 5, and the bottom support component 8 all use high-transmittance materials. The top support component 7 serves as the uppermost covering component, ensuring light transmission. The upper semi-transparent photovoltaic cell 1 is positioned below the top support component 7, absorbing visible and ultraviolet light for photovoltaic power generation while transmitting infrared light. The photothermal reflector 2 is positioned below the upper semi-transparent photovoltaic cell 1, reflecting infrared light to the photothermal collector for photothermal power generation. The first middle support component 4 and the second middle support component 5 are located at the bottom of the upper semi-transparent photovoltaic cell 1 and the photothermal reflector 2, respectively, serving as support layers. The bottom support component 8 uses a corrosion-resistant and supportive material to support the entire structure and ensure system stability. Besides the sliding connection between the aforementioned components and the side panels 6, the bottom support component 8 can also be fixedly connected to the side panels 6. The two side panels 6 are made of corrosion-resistant and highly supportive materials, and can be transparent or opaque, used for encapsulating the system.

[0048] The photovoltaic-photothermal coupling power generation system provided by the embodiment has the following structural features: the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, the lower layer photovoltaic cell 3 and each support assembly are connected with the side plate 6 through a sliding connection method, which can ensure accurate installation and positioning of each component, facilitate quick installation and disassembly of each component, and set a limiting buckle to ensure the stability of the system. The upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2 and the lower layer photovoltaic cell 3 are packaged inside the frame to reduce the influence of the external environment, improve the physical stability of the system, avoid corrosion and damage of the components exposed to the environment for a long time, and improve the service life and stability.

[0049] The photovoltaic-photothermal coupling power generation system provided by the embodiment has the following structural features: the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, the lower layer photovoltaic cell 3 and each support assembly are connected with the side plate 6 through a sliding connection method, which can ensure accurate installation and positioning of each component, facilitate quick installation and disassembly of each component, and set a limiting buckle to ensure the stability of the system. The upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2 and the lower layer photovoltaic cell 3 are packaged inside the frame to reduce the influence of the external environment, improve the physical stability of the system, avoid corrosion and damage of the components exposed to the environment for a long time, and improve the service life and stability of the system. Figure 4

[0050] Embodiment 2

[0051] A photovoltaic-photothermal coupling power generation system, as shown in the figure, the technical scheme in the embodiment is the same as that in embodiment 1, the difference lies in that: any one or more of the top support assembly 7, the first middle support assembly 4, the second middle support assembly 5 and the bottom support assembly 8 are two support blocks arranged symmetrically, and the two support blocks are fixedly connected with the two side plates 6 respectively. Each support assembly can be replaced by a support block, or one or two or three support assemblies can be replaced by a support block, and the remaining support assemblies adopt a support plate. For example, as shown in the figures, each support assembly is two support blocks arranged symmetrically, and the distance between the two support blocks in the vertical direction can be used as the first sliding groove 601 for installing the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2 and the lower layer photovoltaic cell 3, and the limiting buckle can be directly clamped on the support block at this time; as shown in the figure, the top support assembly 7 adopts two support blocks arranged symmetrically, and the remaining support assemblies are support plates; as shown in the figure, the first middle support assembly 4 adopts two support blocks arranged symmetrically, and the remaining support assemblies are support plates. Figure 5 Figure 5 Figure 6 Figure 7 Figure 8 When any support assembly adopts a support block, a limiting plate 602 needs to be arranged at one end of the support block to form a closed end of the first sliding groove 601; or the limiting plate can not be arranged, and limiting buckles are arranged at both ends of the support block.

[0052] When any support assembly adopts a support block, a limiting plate 602 needs to be arranged at one end of the support block to form a closed end of the first sliding groove 601; or the limiting plate can not be arranged, and limiting buckles are arranged at both ends of the support block. ​​​​​

[0053] In this embodiment, the support plate is replaced by a support block, which can further improve the light transmittance and reduce the production cost while maintaining high stability.

[0054] Embodiment 3

[0055] A photovoltaic-photothermal coupled power generation system, as shown in the figure, the technical scheme in this embodiment is basically the same as that in embodiment 1, the difference is that the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower layer photovoltaic cell 3 in this embodiment are respectively embedded with magnets 11 at both ends, and the two side plates 6 are also embedded with corresponding magnets 11 at the corresponding positions, and the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower layer photovoltaic cell 3 are respectively connected with the two side plates 6 by magnetic connection. Figure 9 When the top support assembly 7, the bottom support assembly 8, the first middle support assembly 4, and the second middle support assembly 5 are support plates, they can also be connected with the side plate 6 by magnetic connection, and when they are support blocks, they are fixedly connected with the side plate 6.

[0056] In some connection occasions that do not require long-term fixation but require frequent disassembly, the stability of each component is ensured by strong magnetic connection, and the disassembly operation is facilitated, and each part can be quickly separated without additional tools during the disassembly process.

[0057] Meanwhile, the technical scheme in this embodiment can also be combined with the technical scheme in embodiment 1 or embodiment 2, replacing the limiting buckle with a magnet 11, and installing a magnet 11 on the side wall of the first sliding groove 601, and magnetically connecting with the magnet 11 on each component. Or one or several components are connected by sliding, and the other components are connected by magnetism.

[0058] Embodiment 4

[0059] A photovoltaic-photothermal coupled power generation system, as shown in the figure, the technical scheme in this embodiment is basically the same as that in embodiment 1, the difference is that the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower layer photovoltaic cell 3 in this embodiment are respectively embedded with magnets 11 at both ends, and the two side plates 6 are also embedded with corresponding magnets 11 at the corresponding positions, and the upper layer semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower layer photovoltaic cell 3 are respectively connected with the two side plates 6 by magnetic connection.

[0060] Figure 10 When the top support assembly 7, the bottom support assembly 8, the first middle support assembly 4, and the second middle support assembly 5 are support plates, they can also be connected with the side plate 6 by magnetic connection, and when they are support blocks, they are fixedly connected with the side plate 6.

[0061] When the top support assembly 7, the bottom support assembly 8, the first middle support assembly 4, and the second middle support assembly 5 are support plates, they can also be connected with the side plate 6 by magnetic connection, and when they are support blocks, they are fixedly connected with the side plate 6.

[0062] ​For installation occasions that require higher fixing strength and stability, bolt connection can ensure that each component will not loosen during long-term use, maintaining system stability. When disassembled, the user only needs to loosen the bolts to separate each component. Meanwhile, bolt connection can be added between the upper translucent photovoltaic cell 1, light-heat reflecting mirror 2, lower photovoltaic cell 3 and the corresponding support components to increase connection stability.

[0063] The technical solutions in this embodiment can also be combined with any of the technical solutions in Embodiments 1-3 to further improve the fixing strength and stability of the system.

[0064] Embodiment 5

[0065] A photovoltaic-thermal coupling power generation system, as shown in Figure 11 The technical solutions in this embodiment are basically the same as those in Embodiment 1, except that each component in this embodiment is connected to the two side plates 6 through a rotating buckle 10.

[0066] The rotating buckle 10 includes a rotating shaft 1001 rotatably connected to the side plate 6, a limiting rod 1002 fixed to one end of the rotating shaft 1001 away from the side plate 6, and a locking piece 1003 fixed to the end of each component. The locking piece 1003 is provided with a locking hole 1004, the length and width of the locking hole 1004 are greater than the length and width of the limiting rod 1002, and the width of the locking hole 1004 is less than the length of the limiting rod 1002. As shown in Figure 12 When installed, the locking piece 1003 is directly inserted through the limiting rod 1002 and fitted on the rotating shaft 1001, then the limiting rod 1002 is rotated by 90° to make the limiting rod 1002 perpendicular to the locking hole 1004 for clamping, and each component is fixed in the corresponding position through the rotating buckle 10.

[0067] The design of the rotating buckle 10 can easily lock and unlock the components, and when disassembled, no tools are needed, only the limiting rod 1002 needs to be rotated to easily disassemble. This design is particularly suitable for scenarios that need to be frequently replaced or maintained, providing higher operational convenience.

[0068] The rotating buckle in this embodiment can be combined with any of the technical solutions in Embodiments 1-4.

[0069] Embodiment 6

[0070] A photovoltaic-thermal coupling power generation system, the technical solutions in this embodiment are basically the same as any of the technical solutions in Embodiments 1-5, except that at least one side plate 6 in this embodiment is provided with a side photovoltaic cell 13.

[0071] As shown in Figure 13 and Figure 14As shown, one of the side plates 6 has a cavity 603 communicating with the outside. Second sliding grooves 604 are embedded in the top and bottom of the cavity 603, respectively. The side photovoltaic cell 13 is slidably connected to the cavity 603 along the second sliding grooves 604. The side photovoltaic cell 13 can be fixed on the side plate 6 by installing the magnet in embodiment 3, the fixing bolt in embodiment 4, or the rotating buckle in embodiment 5. The side plate 6 with the side photovoltaic cell 13 is made of a high light transmittance material. The structure of having side photovoltaic cells 13 on both side plates 6 is as follows. Figure 15 As shown. Alternatively, the side photovoltaic cells 13 can be directly fixed to the side plate 6 using adhesive.

[0072] In this embodiment, a side photovoltaic cell 13 is set on the side plate 6 to absorb the sunlight incident from the side, thereby further improving the utilization rate of sunlight. This design can significantly improve the overall light energy utilization rate of the photovoltaic thermal system without increasing the structural complexity.

[0073] Example 7

[0074] A photovoltaic-thermal coupling power generation system is provided. The technical solution in this embodiment is basically the same as that in embodiment 1, except that the frame in this embodiment is further provided with one or two sealing plates 14.

[0075] like Figure 16 As shown, two sealing plates 14 are provided between the two side plates 6. One sealing plate 14 is fixedly connected to both side plates 6 at both ends, and the other sealing plate 14 is hinged to the right side plate 6 and connected to the left side plate 6 by a latch. Any commercially available latch assembly can be used. When two sealing plates 14 are provided, the limiting latch at the open end of the first slide groove 601 can be omitted.

[0076] The frame in this embodiment includes two side plates 6, two sealing plates 14, a top support component 7, and a bottom support component 8, forming a fully enclosed structure that comprehensively encapsulates the upper semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower photovoltaic cell 3, further improving the lifespan of the components and the stability of the system. Moreover, the installation is simpler; it only requires opening the latches on the sealing plate 14 and the side plate 6 and inserting each component into the corresponding first groove 601.

[0077] The technical solutions in embodiments 1-7 in the application can be combined as needed, such as configuring magnetic connection, bolt connection or rotary buckle connection on the basis of the sliding connection structure; the connection mode of each component and the side plate can also be connected in different ways, such as sliding connection of the upper layer semi-transparent photovoltaic cell, magnetic connection or rotary buckle connection of the light-heat reflector, bolt connection of the lower layer photovoltaic cell, and different ways of connecting each support component with the side plate.

[0078] The existing photovoltaic-thermal coupling power generation system has the following problems:

[0079] 1. Difficulty in installing and replacing photovoltaic cells and light-heat reflectors: The existing photovoltaic-thermal coupling power generation system often faces the problem of inconvenient installation and maintenance. The traditional fixing method may require complex tools and procedures, resulting in a large amount of time and effort in device maintenance, upgrading or replacement.

[0080] 2. Inconvenient structure adjustment and regular maintenance: The existing photovoltaic-thermal coupling structure often lacks flexible adjustment and disassembly functions, resulting in the inability of the device to be optimized and adjusted according to actual needs, reducing the adaptability and operability of the system.

[0081] 3. Low light energy utilization efficiency: In the traditional structure, only semi-transparent photovoltaic cells and light-heat reflectors are combined, causing waste of light energy or inability to maximize the use of sunlight.

[0082] 4. Insufficient system stability and service life: The existing photovoltaic-thermal coupling structure is easily affected by the external environment during long-term use. The photovoltaic cells and light-heat reflectors exposed to the environment may cause performance degradation, affecting the stability and service life of the system.

[0083] 5. Poor adaptability of photovoltaic cells and light-heat reflectors: In the existing structure, the installation and docking of photovoltaic cells and light-heat reflectors may not be accurate enough, resulting in unsatisfactory light absorption and reflection effect, and failing to fully utilize sunlight for power generation.

[0084] The photovoltaic-thermal coupling power generation system provided by the application has the following advantages compared with the prior art:

[0085] Firstly, the present application realizes easy installation and disassembly of photovoltaic cells and photothermal mirrors through sliding grooves, bolts, magnets, rotating buckles, etc. In the prior art, the installation and disassembly of components of a photovoltaic-thermal coupling power generation system usually require complex operations, and even tools for assembly and disassembly, which not only increases the difficulty of operation, but also reduces the efficiency of maintenance. The detachable connection structure provided by the present application greatly simplifies these steps, and can quickly realize the installation and replacement of various components, greatly improving the convenience and efficiency of operation. According to experimental data, using the connection structure of the present application, the installation time of system components can be shortened by about 30%, and the disassembly time is reduced by about 40%, significantly improving the operation efficiency.

[0086] Secondly, the present application encapsulates photovoltaic cells and photothermal mirrors, reducing the influence of external environment on photovoltaic cells and photothermal mirrors, and enhancing the physical stability of the system. The existing photovoltaic-thermal coupling power generation system is easily affected by external environmental factors such as wind and sand, corrosion, etc. during long-term use, thereby reducing the reliability and service life of the system. According to the results of comparative experiments, the weather resistance of the system using the structure of the present application in harsh environments is improved by about 25%, and the service life of the system is prolonged by about 20%. By encapsulating photovoltaic cells and photothermal mirrors inside the structure, not only the direct contact of these components with the outside is reduced, prolonging their service life, but also the stability of the system in high temperature, high humidity and other environments is improved, having better corrosion resistance.

[0087] In addition, the energy utilization efficiency of the photovoltaic-thermal coupling power generation system is also a prominent advantage of the present application. The present application uses the upper semi-transparent photovoltaic cell to absorb visible light and ultraviolet light for photovoltaic power generation, and the infrared light is reflected to the photothermal collector by the photothermal mirror for photothermal power generation. The lower photovoltaic cell can also use ground reflected light and ambient light for power generation, and the side photovoltaic cell uses side sunlight for power generation, maximizing the use of solar energy. Experimental data shows that compared with a single photovoltaic-thermal coupling power generation system, the multi-layer coupling and side coupling system of the present application improves the light energy conversion efficiency by about 15%-20%. This efficient use of light energy not only increases the power generation capacity, but also significantly improves the economic benefits of energy utilization.

[0088] In addition, the present application also provides various connection and disassembly schemes, including sliding groove and limiting buckle structure, rotating buckle connection, bolt connection and magnetic connection, etc. The adoption of these schemes makes the system more flexible and convenient, and can meet the installation and maintenance needs in different environments. For example, in application scenarios that require frequent replacement or maintenance, the disassembly time of the rotating buckle connection structure is reduced by about 50% compared with the bolt connection structure. This quick disassembly scheme is especially suitable for the maintenance and replacement of large-scale photovoltaic-thermal integrated systems, reducing maintenance cost and time, and improving the operability and maintenance efficiency of the system.

[0089] The present application effectively solves the problems of inconvenient installation and disassembly, insufficient utilization of light energy, poor system stability and the like in the prior art photovoltaic-photothermal coupled power generation system, improves the utilization efficiency of light energy, and optimizes the maintenance and replacement process of the system through the innovative detachable connection structure design, so that the photovoltaic-photothermal coupled power generation system is more efficient, stable and convenient.

[0090] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A photovoltaic-photothermal coupled power generation system, characterized in that, The frame comprises an upper layer of translucent photovoltaic cell (1), a light-heat mirror (2), and a lower layer of photovoltaic cell (3) arranged from top to bottom in sequence inside the frame; a first middle support assembly (4) is arranged between the upper layer of translucent photovoltaic cell (1) and the light-heat mirror (2); a second middle support assembly (5) is arranged between the light-heat mirror (2) and the lower layer of photovoltaic cell (3); The upper layer of translucent photovoltaic cell (1) absorbs visible light and ultraviolet light for photovoltaic power generation, while transmitting infrared light; the light-heat mirror (2) reflects infrared light to a light-heat collector for photo-thermal power generation; the lower layer of photovoltaic cell (3) collects reflected light and scattered light for photovoltaic power generation; The frame comprises a top support assembly (7) and a bottom support assembly (8), and two side plates (6) are symmetrically arranged between the top support assembly (7) and the bottom support assembly (8); The upper layer of translucent photovoltaic cell (1), the light-heat mirror (2), the lower layer of photovoltaic cell (3), and the side plates (6) are connected by at least one of sliding connection, magnetic connection, bolt connection, or rotating buckle connection; At least one of the side plates (6) is made of transparent material, and a cavity (603) is arranged inside the side plate (6) and communicates with the outside, and a side photovoltaic cell (13) is slidably connected in the cavity (603).

2. The photovoltaic-photo thermal hybrid power system of claim 1, wherein, The top support assembly (7), the bottom support assembly (8), the first middle support assembly (4), and the second middle support assembly (5) are support plates or two symmetrically arranged support blocks; when the support plates are used, the support plates and the side plates (6) are connected by at least one of sliding connection, bolt connection, magnetic connection, or rotating buckle connection; when the support blocks are used, the two support blocks are fixedly connected with the two side plates (6), respectively.

3. The photovoltaic and solar thermal hybrid power system of claim 2, wherein, When the top support assembly (7), the first middle support assembly (4), the second middle support assembly (5), and the bottom support assembly (8) are support plates, the support plates are made of high-transmittance plate material.

4. The photovoltaic-photo thermal hybrid power system of claim 1, wherein, A plurality of first sliding grooves (601) are arranged on the two side plates (6), respectively, and the upper layer of translucent photovoltaic cell (1), the light-heat mirror (2), and the lower layer of photovoltaic cell (3) are arranged at the two ends of the first sliding grooves (601) and can slide along the first sliding grooves (601).

5. The photovoltaic and solar thermal hybrid power system of claim 4, wherein, The two ends of the first sliding grooves (601) are closed ends and open ends, respectively, and the open ends are provided with limiting buckles, the limiting buckles comprise a U-shaped groove (9), the U-shaped groove (9) is clamped on one side wall of the first sliding groove (601), a limiting bolt (901) is arranged on the U-shaped groove (9), and the limiting bolt (901) is tightly attached to or threadedly connected with the side wall of the first sliding groove (601).

6. The photovoltaic-photo thermal hybrid power system of claim 1, wherein, The upper layer semi-transparent photovoltaic cell (1), the light-heat reflecting mirror (2), the lower layer photovoltaic cell (3) and the frame are connected by a rotating buckle (10), the rotating buckle (10) comprises a rotating shaft (1001) rotatably connected to the side plate (6), the rotating shaft (1001) is fixedly connected with a limiting rod (1002), the side edges of the upper layer semi-transparent photovoltaic cell (1), the light-heat reflecting mirror (2) and the lower layer photovoltaic cell (3) are respectively provided with a locking piece (1003), the locking piece (1003) is sleeved on the rotating shaft (1001), and clamping is realized by rotating the limiting rod (1002).

7. The photovoltaic-photo thermal hybrid power system of claim 1, wherein, The frame is further provided with one or two symmetrical blocking plates (14) between the two side plates (6), when two blocking plates (14) are provided, the two ends of one of the blocking plates (14) are fixedly connected with the two side plates (6) respectively, and the other blocking plate (14) is hingedly connected with one of the side plates (6).

Images