Photovoltaic photo-thermal coupling power generation system

Abstract

The utility model relates to the technical field of solar power generation, in particular to a photovoltaic photo-thermal coupling power generation system. Comprising a frame, an upper-layer semitransparent photovoltaic cell, a photo-thermal reflector and a lower-layer photovoltaic cell which are detachable are sequentially arranged in the frame from top to bottom, and a first middle supporting assembly is arranged between the upper-layer semitransparent photovoltaic cell and the photo-thermal reflector; and a second middle supporting assembly is arranged between the photo-thermal reflecting mirror and the lower-layer photovoltaic cell. According to the technical scheme of the utility model, the upper-layer semitransparent photovoltaic cell, the photo-thermal reflector and the lower-layer photovoltaic cell are detachably connected in the frame, so that the problem of performance reduction caused by exposure of the photovoltaic cells and the photo-thermal reflector in the environment is avoided, the stability of the system is improved, and the service life of the system is prolonged; the detachable mode facilitates the disassembly and replacement of each assembly, improves the applicability and operability of the system, and guarantees the maximum utilization of light energy.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar power generation technical field especially is related to a photovoltaic and light heat coupling power generation system. BACKGROUND

[0002] With the global energy crisis and environmental pollution problem aggravating day by day, the use of traditional energy has been unable to meet the demand of sustainable development. As a clean, renewable energy, solar energy is more and more valued by governments and scientific research institutions. Solar energy utilization technology is mainly divided into photovoltaic power generation technology and light heat power generation technology, wherein, photovoltaic (PV) technology and light heat (CSP) technology each has its own advantages and occupies an important position in different application scenarios. Photovoltaic technology converts sunlight into electrical energy through photovoltaic cells, has the advantages of simple installation, low running cost, and is widely used in residential, commercial and large-scale photovoltaic power stations and other fields. However, photovoltaic cells can only use 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, light heat power generation technology converts sunlight into heat energy 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 light heat 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 light heat technology, in recent years, photovoltaic and light heat coupling technology has gradually become the focus of research. By combining photovoltaic cells with light heat reflectors, photovoltaic cells can absorb visible light and ultraviolet light for power generation, and light heat reflectors can reflect sunlight that is not absorbed by photovoltaic cells to light heat collectors for heat energy generation, thereby simultaneously exerting the advantages of photovoltaic and light heat technology. However, the existing photovoltaic and light heat coupling system still faces some technical bottlenecks.

[0004] The existing photovoltaic and light heat coupling system generally installs photovoltaic cells and light heat reflectors in different structures or positions, although this combination can improve the light energy utilization efficiency to a certain extent, but its installation and maintenance are relatively complex, and a large space and high installation precision are required. In addition, these systems usually do not consider the disassembly and replacement of each component, which leads to the system being easily affected by environmental factors (such as wind sand, corrosion, temperature change, 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, and how to improve the physical stability and durability of the structure is still a problem to be solved in harsh environments. Therefore, how to design a more efficient, convenient and stable photovoltaic-thermal coupling structure, 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 utility model aims at solving the problems in the prior art and provides a new photovoltaic-thermal coupling power generation system. Utility model content

[0006] The utility model discloses a photovoltaic-thermal coupling power generation system, which has high light energy utilization efficiency, and various components in the system are convenient to disassemble and install, easy to operate and maintain, and has stronger system stability.

[0007] The utility model provides a photovoltaic-thermal coupling power generation system, it includes frame, the frame inside is equipped with detachable upper layer translucent photovoltaic cell, light-thermal mirror, lower layer photovoltaic cell from top to bottom successively, first middle part support component is equipped between the upper layer translucent photovoltaic cell with the photovoltaic mirror, second middle part support component is equipped between the light-thermal mirror with the lower layer photovoltaic cell.

[0008] Further, the frame includes 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.

[0009] Further, the upper layer translucent photovoltaic cell, the light-thermal mirror, the lower layer photovoltaic cell and the side plate are connected by at least one of sliding connection, magnetic connection, bolt connection or rotating buckle connection.

[0010] Further, the top support assembly, the bottom support assembly, the first middle part support component, the second middle part support component are all support plates or two support blocks arranged symmetrically; when being 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 being support blocks, the two support blocks are fixedly connected with the two side plates respectively.

[0011] Further, when the top support assembly, the first middle part support component, the second middle part support component and the bottom support assembly are support plates, the support plates are made of high light transmittance plate material.

[0012] Further, a plurality of first sliding grooves are arranged on each of the side plates, and two ends of the upper layer semi-transparent photovoltaic cell, the light-heat reflecting mirror and the lower layer photovoltaic cell are respectively arranged in the first sliding grooves and can slide along the first sliding grooves.

[0013] Further, two ends of the first sliding groove are respectively a closed end or an open end, 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 side wall of the first sliding groove, a limiting bolt is arranged on the U-shaped groove, and the limiting bolt is tightly attached to or threadedly connected with the side wall of the first sliding groove.

[0014] Further, the upper layer semi-transparent photovoltaic cell, the light-heat reflecting mirror 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 a side edge of the upper layer semi-transparent photovoltaic cell, the light-heat reflecting mirror and the lower layer photovoltaic cell, the locking piece is sleeved on the rotating shaft, and clamping is realized by rotating the limiting rod.

[0015] Further, a 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.

[0016] 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, and the other blocking plate is hingedly connected with one of the side plates.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The technical scheme of the utility model discloses that the upper layer semi-transparent photovoltaic cell, the light-heat reflecting mirror and the lower layer photovoltaic cell are detachably connected in the frame, thereby avoiding the problem that the photovoltaic cell and the light-heat reflecting mirror are exposed to the environment and cause performance decline, improving the stability and service life of the system, the detachable connection mode facilitates the disassembly and replacement of each component, can be optimized and adjusted according to actual needs, improves the applicability and operability of the system, meanwhile, ensures the maximum utilization of light energy, and the lower layer photovoltaic cell greatly improves the utilization rate of sunlight. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, obviously, the drawings described in the following are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is a side view of the photovoltaic and photo-thermal coupling power generation system in the embodiment 1 of the present application.

[0021] Figure 2 It is a split structure schematic view of the photovoltaic and photo-thermal coupling power generation system in the embodiment 1 of the present application.

[0022] 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.

[0023] Figure 4 It is a light energy utilization principle schematic view of the photovoltaic and photo-thermal coupling power generation system in the embodiment 1 of the present application.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Figure 9 It is a side view of the photovoltaic and photo-thermal coupling power generation system in the embodiment 3 of the present application.

[0029] Figure 10 It is a side view of the photovoltaic and photo-thermal coupling power generation system in the embodiment 4 of the present application.

[0030] Figure 11 It is a side view of the photovoltaic and photo-thermal coupling power generation system in the embodiment 5 of the present application.

[0031] Figure 12 It is a structure schematic view of the rotating buckle in the embodiment 5 of the present application.

[0032] Figure 13 It is a structure schematic view of the side plate in the embodiment 6 of the present application.

[0033] Figure 14 The system side view of the embodiment 6 of the utility model is provided with one side photovoltaic cell;

[0034] Figure 15 The system side view of the embodiment 6 of the utility model is provided with two side photovoltaic cells;

[0035] Figure 16 The frame structure schematic diagram of the embodiment 7 of the utility model is provided with two blocking plates.

[0036] The figure mark explanation: 1-the upper layer translucent photovoltaic cell;2-photothermal reflector;3-the lower layer photovoltaic cell;4-the first middle support component;5-the second middle support component;6-the side plate;601-the first sliding groove;602-the limiting plate;603-the cavity;604-the second sliding groove;7-the top support component;8-the bottom support component;9-the U-shaped groove;901-the limiting bolt;10-rotary buckle;1001-the rotating shaft;1002-the limiting rod;1003-the lock piece;1004-the lock hole;11-the magnet;12-the fixed bolt;13-the side photovoltaic cell;14-the blocking plate;15-the heat collector. DETAILED DESCRIPTION

[0037] The technical scheme of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0038] In the description of the utility model, it is understood that the orientation or position relationship indicated by 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 are the orientation or position relationship shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0039] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between 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.

[0040] Embodiment 1

[0041] A photovoltaic-photothermal coupled power generation system, as shown in Figure 1 The frame includes two side plates 6, a top support assembly 7 and a bottom support assembly 8, and the two side plates 6 are oppositely arranged 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 connected with the two side plates 6 in sliding mode.

[0042] As shown in Figure 2 The frame includes two side plates 6, a top support assembly 7 and a bottom support assembly 8, and the two side plates 6 are oppositely arranged 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 connected with the two side plates 6 in sliding mode.

[0043] 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 the two side plates 6 are respectively provided with seven first sliding grooves 601 Figure 1 The middle black area represents the side wall of the first sliding groove 601, and six of the 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 the need), 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 of the semi-transparent photovoltaic cell 1, the photothermal reflector 2, the lower layer of the 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.

[0044] The length of the first sliding groove 601 is slightly larger than the width of each component (the "each component" in the embodiment of the utility model means the collective term of the upper layer semi-transparent photovoltaic cell 1, the light-heat reflector 2, the lower layer photovoltaic cell 3, the top supporting component 7, the bottom supporting component 8, the first middle supporting component 4 and the second middle supporting component 5), when each component is installed in place, the open end of the first sliding groove 601 leaves a blank, which is used for installing the limiting buckle, for example, as shown in Figure 3 The limiting buckle adopts a U-shaped groove 9, a limiting hole is provided through one of the side walls of the U-shaped groove 9, a limiting bolt 901 is arranged in the limiting hole, after the bottom supporting component 8 and the first sliding groove 601 on the side plate 6 are installed, the U-shaped groove 9 is clamped on the side wall of the first sliding groove 601, the limiting bolt 901 is tightened, so that the screw rod of the limiting bolt 901 away from the head is tightly attached to the side wall of the first sliding groove 601, or a corresponding threaded hole is arranged on the side wall of the first sliding groove 601, so that the limiting bolt 901 is threadedly connected with the side wall of the first sliding groove 601. When the first sliding groove 601 is designed and manufactured, the adjacent two first sliding grooves 601 can share a side wall, and the limiting buckle is installed on the shared side wall.

[0045] When designed and manufactured, the two ends of the first sliding groove 601 can be designed as open ends, and the limiting buckle can be installed at the two ends of the first sliding groove 601.

[0046] In the embodiment, the top supporting component 7, the first middle supporting component 4, the second middle supporting component 5 and the bottom supporting component 8 all adopt high light transmittance plate materials. The top supporting component 7 is the uppermost covering component, which guarantees the transmission of light; the upper layer semi-transparent photovoltaic cell 1 is arranged below the top supporting component 7, absorbs visible light and ultraviolet light for photovoltaic power generation, and transmits infrared light at the same time; the light-heat reflector 2 is arranged below the upper layer semi-transparent photovoltaic cell 1, reflects infrared light to the light-heat collector for photo-thermal power generation; the first middle supporting component 4 and the second middle supporting component 5 are respectively arranged at the bottom of the upper layer semi-transparent photovoltaic cell 1 and the light-heat reflector 2, and serve as supporting layers. The bottom supporting component 8 adopts a plate material which is corrosion-resistant and has supporting force, supports the whole structure and guarantees the stability of the system. In addition to the sliding connection between each component and the side plate 6, the bottom supporting component 8 can also be connected with the side plate 6 in a fixed connection mode. The two side plates 6 are made of a plate material which is corrosion-resistant and has high supporting force, and can be transparent or opaque, and are used for packaging the system.

[0047] 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.

[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. Figure 4

[0049] Embodiment 2

[0050] 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. All the support assemblies can be replaced by support blocks, or one or two or three of the support assemblies can be replaced by support blocks, and the remaining support assemblies adopt support plates. 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.

[0051] 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] In this embodiment, the support plate is replaced with a support block, which can further improve the light transmittance and reduce the production cost, while maintaining high stability.

[0053] Example 3

[0054] A photovoltaic-thermal coupled power generation system, such as Figure 9 As shown, the technical solution in this embodiment is basically the same as that in embodiment 1, except that: in this embodiment, magnets 11 are embedded at both ends of the upper semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower photovoltaic cell 3, and corresponding magnets 11 are also embedded at the corresponding positions of the two side plates 6. The two ends of the upper semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower photovoltaic cell 3 are connected to the two side plates 6 by magnetic connection.

[0055] When the top support assembly 7, bottom support assembly 8, first middle support assembly 4, and second middle support assembly 5 are used as support plates, they can also be connected to the side plate 6 by magnetic connection. When support blocks are used, they are fixedly connected to the side plate 6.

[0056] In some connection applications where long-term fixation is not required but frequent disassembly is necessary, strong magnetic connections ensure the stability of each component while facilitating disassembly. During disassembly, the parts can be quickly separated without the need for additional tools.

[0057] Meanwhile, the technical solution in this embodiment can also be combined with the technical solutions in Embodiment 1 or Embodiment 2, replacing the limiting buckle with a magnet 11, installing the magnet 11 on the side wall of the first slide groove 601, and magnetically connecting it with the magnets 11 on each component. Alternatively, one or more components can be slidably connected, while the other components can be magnetically connected.

[0058] Example 4

[0059] A photovoltaic-thermal coupled power generation system, such as Figure 10 As shown, the technical solution in this embodiment is basically the same as that in embodiment 1, except that: in this embodiment, the upper semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower photovoltaic cell 3 are provided with threaded holes at both ends, and the two side plates 6 are also provided with corresponding threaded holes at corresponding positions. The upper semi-transparent photovoltaic cell 1, the photothermal reflector 2, and the lower photovoltaic cell 3 are respectively connected to the two side plates 6 by fixing bolts 12.

[0060] When the top support assembly 7, bottom support assembly 8, first middle support assembly 4, and second middle support assembly 5 are support plates, they are also connected to the side plate 6 by bolts. When support blocks are used, they are fixedly connected to the side plate 6.

[0061] 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.

[0062] The technical solution 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.

[0063] Embodiment 5

[0064] A photovoltaic-thermal coupling power generation system, as shown in Figure 11 The technical solution in this embodiment is basically the same as that in Embodiment 1, except that each component in this embodiment is connected with the two side plates 6 through a rotating buckle 10.

[0065] 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.

[0066] 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 operation convenience.

[0067] The rotating buckle in this embodiment can be combined with any of the technical solutions in Embodiments 1-4.

[0068] Embodiment 6

[0069] A photovoltaic-thermal coupling power generation system, the technical solution in this embodiment is 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.

[0070] 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.

[0071] 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.

[0072] Example 7

[0073] 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.

[0074] 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.

[0075] 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.

[0076] The technical solutions in the embodiments 1-7 in the utility model can be combined at will, such as configuring magnetic connection, bolt connection or rotary buckle connection on the basis of the sliding connection structure; the connecting mode of each component and the side plate can also be connected in different modes, such as adopting sliding connection for the upper layer semi-transparent photovoltaic cell, adopting magnetic connection or rotary buckle connection for the light-heat reflector, adopting bolt connection for the lower layer photovoltaic cell, and each supporting component can also be connected with the side plate in different modes.

[0077] The photovoltaic-thermal coupling power generation system in the prior art has the following problems:

[0078] 1. Difficult installation and replacement of photovoltaic cells and light-heat reflectors: the existing photovoltaic-thermal coupling power generation system often faces the problem of inconvenient installation and maintenance, and the traditional fixing mode may need complex tools and procedures, resulting in a large amount of time and effort in equipment maintenance, upgrading or replacement.

[0079] 2. Inconvenient structure adjustment and regular maintenance: the photovoltaic-thermal coupling structure in the prior art often lacks flexible adjustment and disassembly functions, resulting in that the equipment cannot be optimized and adjusted according to actual needs, reducing the adaptability and operability of the system.

[0080] 3. Low light energy utilization efficiency: only semi-transparent photovoltaic cells and light-heat reflectors are combined in the traditional structure, causing waste of light energy or inability to maximize utilization of sunlight.

[0081] 4. Insufficient system stability and service life: the existing photovoltaic-thermal coupling structure is easily affected by the external environment during long-term use, and the photovoltaic cells and light-heat reflectors exposed to the environment may cause performance degradation, affecting the stability and service life of the system.

[0082] 5. Poor adaptability of photovoltaic cells and light-heat reflectors: in the existing structure, the installation and docking mode 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.

[0083] The photovoltaic-thermal coupling power generation system provided by the utility model has the following advantages compared with the prior art:

[0084] Firstly, the photovoltaic cell and the light-heat reflector are easily installed and disassembled through the sliding groove, the bolt, the magnet and the rotating buckle. In the prior art, the installation and disassembly of the components of the photovoltaic-thermal coupling power generation system usually need complex operations, and even tools are needed for assembly and disassembly, which not only increases the difficulty of operation, but also reduces the maintenance efficiency. The detachable connecting structure greatly simplifies these steps, and can quickly realize the installation and replacement of each component, greatly improving the operation convenience and work efficiency. According to experimental data, the installation time of the system components can be shortened by about 30% using the connecting structure of the utility model, and the disassembly time is reduced by about 40%, which significantly improves the operation efficiency.

[0085] Secondly, the photovoltaic cell and the light-heat reflector are packaged, which reduces the influence of the external environment on the photovoltaic cell and the light-heat reflector, and enhances the physical stability of the system. The existing photovoltaic-thermal coupling power generation system is easily affected by wind, sand, corrosion and other external environmental factors during long-term use, thereby reducing the reliability and service life of the system. According to the comparative experimental results, the weather resistance of the system adopting the structure of the utility model is improved by about 25% in harsh environments, and the service life of the system is prolonged by about 20%. By packaging the photovoltaic cell and the light-heat reflector inside the structure, not only the direct contact of the external environment with these components is reduced, the service life of them is prolonged, but also the stability of the system in high temperature, high humidity and other environments is improved, and the corrosion resistance is better.

[0086] In addition, the energy utilization efficiency of the photovoltaic-thermal coupling power generation system is also a prominent advantage of the utility model. The utility model 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 light-heat collector by the light-heat reflector for photo-thermal 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 utility model 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.

[0087] In addition, the utility model also puts forward a variety of connection and disassembly scheme, including slide and limit buckle structure, rotating buckle connection, bolt connection and magnetic connection and so on various ways, the adoption of these schemes makes the system more flexible, convenient, can satisfy the installation and maintenance demand under different environment simultaneously. For example, in the application scene needing frequently replacement or maintenance, the disassembly time of rotating buckle connection structure reduces about 50% than bolt connection structure. This quick disassembly scheme is especially applicable to the maintenance and replacement of large photovoltaic photo-thermal integrated system, reduces maintenance cost and time, improves the operability and maintenance efficiency of system.

[0088] The utility model discloses through above-mentioned technical scheme effectively solved the photovoltaic photo-thermal coupling power generation system installation, disassembly inconvenient, light energy utilization deficiency, system stability difference and so on in the prior art, not only improved the utilization efficiency of light energy, still through the innovative detachable connection structure design, optimized the maintenance and replacement process of system, made photovoltaic photo-thermal coupling power generation system more efficient, stable, convenient.

[0089] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some or all of the technical features. These modifications or substitutions do not change the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A photovoltaic-thermal coupled power generation system, characterized in that, The frame includes a detachable upper semi-transparent photovoltaic cell (1), a photothermal reflector (2), and a lower photovoltaic cell (3) arranged sequentially from top to bottom inside the frame. A first central support assembly (4) is provided between the upper semi-transparent photovoltaic cell (1) and the photothermal reflector (2), and a second central support assembly (5) is provided between the photothermal reflector (2) and the lower photovoltaic cell (3).

2. The photovoltaic-thermal coupled power generation system according to claim 1, characterized in that, The frame includes a top support assembly (7) and a bottom support assembly (8), with two side plates (6) symmetrically arranged between the top support assembly (7) and the bottom support assembly (8).

3. The photovoltaic-thermal coupled power generation system according to claim 2, characterized in that, The upper semi-transparent photovoltaic cell (1), the photothermal reflector (2), the lower photovoltaic cell (3), and the side plate (6) are connected by at least one of the following methods: sliding connection, magnetic connection, bolt connection, or rotary buckle connection.

4. The photovoltaic-thermal coupled power generation system according to claim 3, characterized in that, The top support assembly (7), the bottom support assembly (8), the first middle support assembly (4), and the second middle support assembly (5) are all support plates or two symmetrically arranged support blocks; when they are support plates, 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 they are support blocks, the two support blocks are respectively fixedly connected to the two side plates (6).

5. The photovoltaic-thermal coupled power generation system according to claim 4, characterized in that, When the top support component (7), the first middle support component (4), the second middle support component (5) and the bottom support component (8) are support plates, the support plates are made of high light transmittance materials.

6. The photovoltaic-thermal coupled power generation system according to claim 3, characterized in that, The two side plates (6) are respectively provided with a plurality of first sliding grooves (601). The two ends of the upper semi-transparent photovoltaic cell (1), the photothermal reflector (2), and the lower photovoltaic cell (3) are respectively located in the first sliding grooves (601) and can slide along the first sliding grooves (601).

7. The photovoltaic-thermal coupled power generation system according to claim 6, characterized in that, The first slide groove (601) has a closed end and an open end at its two ends, respectively. The open end is provided with a limiting buckle, which includes a U-shaped groove (9). The U-shaped groove (9) is engaged with one of the side walls of the first slide groove (601). The U-shaped groove (9) is provided with a limiting bolt (901). The limiting bolt (901) is tightly fitted or threadedly connected to the side wall of the first slide groove (601).

8. The photovoltaic-thermal coupled power generation system according to claim 3, characterized in that, The upper semi-transparent photovoltaic cell (1), the photothermal reflector (2), the lower photovoltaic cell (3) are connected to the frame by a rotating buckle (10). The rotating buckle (10) includes a rotating shaft (1001) rotatably connected to the side plate (6). A limiting rod (1002) is fixedly connected to the rotating shaft (1001). The upper semi-transparent photovoltaic cell (1), the photothermal reflector (2), and the lower photovoltaic cell (3) are respectively provided with locking pieces (1003). The locking pieces (1003) are sleeved on the rotating shaft (1001) and are engaged by rotating the limiting rod (1002).

9. The photovoltaic-thermal coupled power generation system according to claim 3, characterized in that, At least one of the side panels (6) is made of a transparent material, and the side panel (6) has a cavity (603) that communicates with the outside. A side photovoltaic cell (13) is slidably connected in the cavity (603).

10. The photovoltaic-thermal coupled power generation system according to claim 3, characterized in that, The frame is further provided with one or two symmetrical sealing plates (14) between the two side plates (6). When there are two sealing plates (14), the two ends of one of the sealing plates (14) are fixedly connected to the two side plates (6) respectively, and the other sealing plate (14) is hinged to one of the side plates (6).

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