Photovoltaic and photo-thermal integrated assembly and system

Abstract

The utility model is suitable for the technical field of solar power generation, and provides a photovoltaic and photo-thermal integrated assembly and system.The photovoltaic and photo-thermal integrated assembly comprises a photovoltaic module, a photo-thermal module and a first adhesive film, the upper side of the first adhesive film is attached to the photovoltaic module, and the lower side of the first adhesive film is attached to the photo-thermal module; the photo-thermal module comprises a heat collecting plate, an air cavity, a water pipe and foam metal; the air cavity is arranged on the lower side of the heat collecting plate, the water pipe and the foam metal are arranged in the air cavity, and the foam metal is attached to the upper wall in the air cavity. The applicability of the photovoltaic and photo-thermal integrated assembly is improved, and the utilization rate of solar energy is improved while the power generation efficiency is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of solar power generation technology, and in particular to a photovoltaic-thermal integrated component and system. Background Art

[0002] The utilization of solar energy is mainly divided into two aspects: solar power generation and solar thermal concentration. In solar power generation, excessively high photovoltaic temperature will lead to reduced power generation efficiency; in solar thermal concentration, there are problems such as installation and laying land occupation and low solar energy utilization rate.

[0003] At present, a PVT (Solar photovoltaicthermal) component that combines solar power generation and solar heat collection has been proposed to improve the utilization rate of solar energy and the efficiency of power generation. The PVT components existing in the related art are mainly divided into water-collecting PVT components and air-collecting PVT components. By utilizing the heat generated by the photovoltaic module during power generation, water or air is heated to achieve the function of hot water supply or heating. However, the water-collecting PVT component is subject to regional restrictions. In winter in cold areas, its use will be affected because the water is easy to freeze. That is, the hot air type PVT component is generally used for heating in winter, resulting in a low utilization rate of solar energy in other seasons. Utility Model Content

[0004] The present application proposes a photovoltaic-thermal integrated component and system for improving the applicability of the photovoltaic-thermal integrated component, thereby improving the utilization rate of solar energy while ensuring power generation efficiency.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] In a first aspect, a photovoltaic-thermal integrated component is provided, comprising a photovoltaic module, a photothermal module and a first adhesive film, wherein the upper side of the first adhesive film is bonded to the photovoltaic module, and the lower side of the first adhesive film is bonded to the photothermal module; the photothermal module comprises a heat collecting plate, an air cavity, a water pipe and a foam metal; the air cavity is arranged at the lower side of the heat collecting plate, the water pipe and the foam metal are arranged in the air cavity, and the foam metal is bonded to the upper wall in the air cavity.

[0007] Furthermore, the photothermal module also includes a water valve and an air valve. The water valve is used to control the circulation of water in the water pipe, and the air valve is used to control the circulation of air in the air cavity.

[0008] Furthermore, the solar thermal module also includes multiple partitions, which divide the air cavity into multiple sub-air cavities, and the multiple sub-air cavities correspond one-to-one to the multiple battery cells in the battery cell group included in the photovoltaic module; each of the multiple sub-air cavities is provided with a water pipe and foam metal.

[0009] Furthermore, the photothermal module also includes a plurality of first control ports; the plurality of first control ports correspond one-to-one to the water pipes in the plurality of sub-air cavities, and the first control ports are used to control the flow of water in the corresponding water pipes.

[0010] Furthermore, the photothermal module also includes a plurality of second control ports; the plurality of second control ports correspond one-to-one to the plurality of sub-air cavities, and the second control ports are used to control the circulation of air in the corresponding sub-air cavities.

[0011] Furthermore, the photovoltaic-thermal integrated assembly also includes a thermal insulation layer; the thermal insulation layer is arranged around and on the bottom of the thermal module.

[0012] Furthermore, the photovoltaic module comprises, from top to bottom, a photovoltaic cover plate, a second adhesive film, a battery cell group, a third adhesive film, and a photovoltaic back plate, and the battery cell group includes a plurality of battery cells.

[0013] Furthermore, the photovoltaic module also includes a fourth adhesive film and a steel plate; the upper side of the fourth adhesive film is bonded to the photovoltaic back plate, and the lower side of the fourth adhesive film is bonded to the steel plate.

[0014] Furthermore, a preset installation area is provided on the steel plate.

[0015] In a second aspect, the present application also provides a photovoltaic-thermal integrated system, including the photovoltaic-thermal integrated component as described above.

[0016] The photovoltaic-thermal integrated assembly proposed in the present application includes a photovoltaic module, a photothermal module and a first adhesive film. The upper side of the first adhesive film is bonded to the photovoltaic module, and the lower side is bonded to the photothermal module, and the photovoltaic-thermal integrated assembly is obtained by combining. The photothermal module includes a heat collecting plate, an air cavity, a water pipe and a foam metal, wherein the air cavity is arranged on the lower side of the heat collecting plate, the water pipe and the foam metal are arranged in the air cavity, and the foam metal is bonded to the upper wall in the air cavity. In this way, the water pipe is arranged inside the air cavity, which increases the temperature of the water pipe during the heat storage process, brings a certain insulation effect to the water pipe, reduces the heat loss during the circulation of hot water in the water pipe, and avoids the freezing of water in the water pipe, which can be applied to all seasons and cold areas. In addition, since the air metal is arranged on the upper wall in the air cavity, the uniformity of the air temperature in the air cavity can be maintained, so that the temperature of the photovoltaic module can be stably reduced or maintained, and the efficiency of photovoltaic power generation can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a photovoltaic-thermal integrated assembly provided in an embodiment of the present application Figure 1 ;

[0018] Figure 2 A schematic diagram of a photothermal module structure provided in an embodiment of the present application Figure 1 ;

[0019] Figure 3 A schematic diagram of a photothermal module structure provided in an embodiment of the present application Figure 2 ;

[0020] Figure 4 A schematic diagram of a top view of a photothermal module provided in an embodiment of the present application Figure 1 ;

[0021] Figure 5 A schematic diagram of a top view of a photothermal module provided in an embodiment of the present application Figure 2 ;

[0022] Figure 6 A schematic diagram of a photovoltaic module structure provided in an embodiment of the present application Figure 1 ;

[0023] Figure 7 A schematic diagram of a photovoltaic module structure provided in an embodiment of the present application Figure 2 ;

[0024] Figure 8 A schematic diagram of a photovoltaic-thermal integrated assembly provided in an embodiment of the present application Figure 2 .

[0025] Reference numerals:

[0026] Photovoltaic module 100, photothermal module 200, first adhesive film 300, thermal insulation layer 400, photovoltaic cover plate 110, second adhesive film 120, battery cell group 130, battery cell 131, third adhesive film 140, photovoltaic back plate 150, fourth adhesive film 160, steel plate 170, heat collecting plate 210, air cavity 220, sub-air cavity 221, water pipe 230, air metal 240, water valve 250, first control port 251, air valve 260, second control port 261, partition 270. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. In addition, it should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0033] The photovoltaic-thermal integrated assembly proposed in the present application includes a photovoltaic module, a photothermal module and a first adhesive film. The upper side of the first adhesive film is bonded to the photovoltaic module, and the lower side is bonded to the photothermal module, and the photovoltaic-thermal integrated assembly is obtained by combining. The photothermal module includes a heat collecting plate, an air cavity, a water pipe and a foam metal, wherein the air cavity is arranged on the lower side of the heat collecting plate, the water pipe and the foam metal are arranged in the air cavity, and the foam metal is bonded to the upper wall in the air cavity. In this way, the water pipe is arranged inside the air cavity, which increases the temperature of the position of the water pipe during the heat storage process, brings a certain insulation effect to the water pipe, reduces the heat loss during the circulation of hot water in the water pipe, and avoids the freezing of water in the water pipe. In addition, since the air metal is arranged on the upper wall in the air cavity, the uniformity of the air temperature in the air cavity can be maintained, so that the temperature of the photovoltaic module can be stably reduced or maintained, and the efficiency of photovoltaic power generation can be guaranteed.

[0034] On the other hand, the above-mentioned photovoltaic-thermal integrated assembly can be used as a part of building materials, and the foam metal can improve the sound insulation performance of the building and can improve the overall strength of the building structure.

[0035] In some embodiments, Figure 1 The schematic diagram of the structure of a photovoltaic-thermal integrated assembly is shown, and the photovoltaic-thermal integrated assembly includes a photovoltaic module 100, a photothermal module 200 and a first adhesive film 300. The upper side of the first adhesive film 300 is attached to the photovoltaic module 100, and the lower side is attached to the photothermal module 200. The photothermal module 200 includes a heat collecting plate 210, an air cavity 220, a water pipe 230 and a foam metal 240. The air cavity 220 is arranged on the lower side of the heat collecting plate 210, the water pipe 230 and the foam metal 240 are arranged inside the air cavity 220, and the foam metal 240 is attached to the upper wall in the air cavity 220, so as to improve the efficiency of heat charging and heat storage.

[0036] In practice, the photovoltaic module 100 is a device for directly converting light energy into electrical energy through photoelectric effect or photochemical effect under certain illumination conditions. The photovoltaic body 100 has a front side and a back side, wherein the front side of the photovoltaic module 100 refers to the light-receiving side, and similarly, the back side of the photovoltaic module 100 refers to the backlight side.

[0037] The photothermal module 200 is used to cool down the photovoltaic module 100 to ensure the power generation efficiency of the photovoltaic module 100. In the photothermal module 200, the heat collecting plate 210 is used to absorb the heat generated by the photovoltaic module 100, and the foam metal 240 located on the upper wall of the air cavity 220 is used to quickly transfer the heat absorbed by the heat collecting plate to the air cavity 200 and the water pipe 230, so as to heat the air in the air cavity 220 and the water in the water pipe 230, thereby realizing the use of solar energy for heating.

[0038] Exemplarily, the water pipe 230 may be a PVC (Polyvinylchlorid) heat pipe, etc., which has better heat resistance than ordinary PVC pipes, and has small fluid resistance, excellent corrosion resistance and chemical resistance, and good water tightness.

[0039] Foam metal 240 refers to a special metal material containing foam pores. Through its unique structural characteristics, foam metal has the advantages of low density, good heat insulation and sound insulation.

[0040] For example, the foam metal 240 may be foam aluminum, nickel, or an alloy thereof, which is not specifically limited in the present application.

[0041] The first adhesive film 300 is used to combine the photovoltaic module 100 and the photothermal module 200 into a photovoltaic-photothermal integrated assembly, wherein the first adhesive film 300 is located at the lower side of the photovoltaic module 100 and at the upper side of the photothermal module 200 .

[0042] Optionally, the first adhesive film 300 is at least one of EVA and POE, wherein EVA (ethylene-vinylacetate copolymer) is a general-purpose polymer with excellent water resistance, corrosion resistance, vibration resistance, heat preservation, aging resistance and chemical stability. POE (polyolefin thermoplasticelastomer) is a high-performance polyolefin, which is rubber elastic at room temperature and has the characteristics of low density, large bending, high low-temperature impact resistance, easy processing and reusability.

[0043] The photovoltaic-thermal integrated assembly provided by the present application realizes the function of providing heating and hot water at the same time on the basis of ensuring the power generation efficiency of the photovoltaic module 100, and because the water pipe 230 is located inside the air cavity 220, the hot air inside the air cavity 220 can achieve the insulation effect on the water pipe, avoiding the freezing of the water in the water pipe when used in cold areas, thereby ensuring the normal operation of the assembly. In addition, by setting the foam metal, the uniformity of the air temperature in the air cavity 220 can be improved, thereby ensuring the cooling effect on the photovoltaic module and the heating effect on the air cavity 220 and the water pipe 230.

[0044] In some optional embodiments, combined with Figure 1 ,like Figure 2 As shown, the solar thermal module 200 further includes a water valve 250 and an air valve 260 . The water valve 250 is used to control the flow of water in the water pipe 230 , and the air valve 260 is used to control the flow of air in the air cavity 220 .

[0045] After the water valve 250 is opened, water in the water pipe 230 begins to flow. During the power generation process of the photovoltaic module 100, the water flowing in the water pipe 230 is heated to achieve the function of hot water supply.

[0046] After the air valve 260 is opened, the air in the air cavity 220 begins to circulate. During the power generation process of the photovoltaic module 100, the air circulating in the air cavity 220 is heated to achieve the heating function.

[0047] Optionally, the user can control the opening of the water valve 250 or the air valve 260 separately based on demand to supply hot water and heating. Alternatively, the water valve 250 and the air valve 260 are controlled to open at the same time to realize the functions of hot water supply and heating at the same time.

[0048] In some optional embodiments, such as Figure 3 As shown, the solar thermal module 200 further includes a plurality of partitions 270 .

[0049] The plurality of partitions 270 divide the air cavity 220 into a plurality of sub-air cavities 221, and the plurality of sub-air cavities 221 correspond one-to-one to the plurality of cells in the cell group included in the photovoltaic module 100. Each of the plurality of sub-air cavities 221 is provided with a water pipe and foam metal.

[0050] Optionally, based on the sub-air cavities 221 corresponding one-to-one to multiple solar cells, and the water pipes and foam metals arranged in each sub-air cavity 221, it is possible to maintain the temperature uniformity of each solar cell, effectively improving and maintaining the power generation efficiency of the photovoltaic module 100.

[0051] In some optional embodiments, such as Figure 4 As shown, Figure 4 It is a schematic diagram of the top view of the structure of the photothermal module 200. The photothermal module 200 also includes a plurality of first control ports 251. The plurality of first control ports 251 correspond one-to-one to the water pipes in the plurality of sub-air cavities 221. The first control ports 251 are used to control the flow of water in the corresponding water pipes.

[0052] Optionally, the flow of water in each water pipe in each sub-air cavity 221 can be controlled through multiple first control ports 251. Exemplarily, water pipe B corresponds to first control port B, and the user can independently control the flow of water in water pipe B through first control port B when the water valve 250 is open, without affecting the opening or closing of water pipes in other sub-air cavities 221.

[0053] In some optional embodiments, such as Figure 5 As shown, the photothermal module 200 further includes a plurality of second control ports 261 , which correspond one-to-one to the plurality of sub-air cavities 221 , and the second control ports 261 are used to control the circulation of air in the corresponding sub-air cavities.

[0054] Optionally, the circulation of air in each sub-air cavity 221 can be controlled through multiple second control ports 261. Exemplarily, the sub-air cavity C corresponds to the second control port C, and the user can independently control the circulation of air in the sub-air cavity C through the second control port C when the air valve 260 is opened, without affecting the opening or closing of other sub-air cavities 221.

[0055] In some optional embodiments, the photovoltaic-thermal integrated assembly further includes a thermal insulation layer, which is disposed around and on the bottom of the photothermal module 200 to reduce heat consumption.

[0056] In some optional embodiments, such as Figure 6 As shown, the photovoltaic module 100 includes a photovoltaic cover plate 110 , a second adhesive film 120 , a battery cell group 130 , a third adhesive film 140 , and a photovoltaic cover plate 150 , wherein the battery cell group 130 includes a plurality of battery cells 131 .

[0057] Optionally, the photovoltaic cover plate 110 can be made of glass or the like; the second adhesive film 120 and the third adhesive film 140 can be made of at least one of EVA and POE; the photovoltaic back panel can be a coated composite back panel or a coated back panel, which is not specifically limited in the present application.

[0058] During implementation, the battery cell 131 in the battery cell group 130 can be any one of an IBC (Interdigitated back contact) battery cell, a PERC (Passivated Emitter and Rear Cell) battery cell, a TOPCon (Tunnel Oxide Passivating Contact) battery cell and a BC (Back Contact) battery cell, and the present application does not make any specific limitation on this.

[0059] Taking the case where the front side of the cell 131 included in the cell group faces upward as an example, the photovoltaic cover plate 110 , the second adhesive film 120 , the cell group 130 , the third adhesive film 140 , and the photovoltaic cover plate 150 are arranged in sequence from top to bottom.

[0060] In some optional embodiments, such as Figure 7 As shown, the photovoltaic module 100 further includes a fourth adhesive film 160 and a steel plate 170 .

[0061] The upper side of the fourth adhesive film 160 is bonded to the photovoltaic back sheet 150 , and the lower side of the fourth adhesive film 160 is bonded to the steel plate 170 .

[0062] Optionally, the fourth adhesive film 160 can be made of at least one of EVA and POE, and the steel plate 170 can be made of high aluminum zinc / aluminum magnesium steel plate to improve the oxidation resistance and corrosion resistance of the steel plate 170 and delay the service life of the component.

[0063] Optionally, a preset installation area, such as a mounting hole or a pressing block area, is provided on the steel plate 170, which can be used for the rapid installation of the photovoltaic-thermal integrated assembly.

[0064] In some optional embodiments, the present application also provides a photovoltaic-thermal integrated system, including the photovoltaic-thermal integrated component as described above.

[0065] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the structure and implementation principle of the photovoltaic system described above can refer to the corresponding structure and implementation principle of the aforementioned embodiment 1, and will not be repeated here.

[0066] In combination with the above embodiments of the present application, the cross-sectional structure diagram of the photovoltaic-thermal integrated assembly provided by the present application is as follows: Figure 8 As shown, it includes a photovoltaic cover plate 110, a second adhesive film 120, a battery cell group 130, a third adhesive film 140, a photovoltaic back plate 150, a fourth adhesive film 160, a steel plate 170, a first adhesive film 300, a heat collecting plate 210, an air cavity 220, a water pipe 230, a foam metal 240, a partition 270 and a thermal insulation layer 400.

[0067] The photovoltaic-thermal integrated assembly proposed in this application realizes the function of providing heating and hot water at the same time on the basis of ensuring the power generation efficiency of the photovoltaic module 100. Since the water pipe 230 is located inside the air cavity 220, the hot air inside the air cavity 220 can achieve the insulation effect on the water pipe, avoiding the risk of water in the water pipe being frozen when used in cold areas, and ensuring the normal operation of the assembly. In addition, by setting the foam metal, the uniformity of the air temperature in the air cavity 220 can be improved, thereby ensuring the cooling effect on the photovoltaic module and the heating effect on the air cavity 220 and the water pipe 230.

[0068] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic-thermal integrated assembly, characterized in that: It comprises a photovoltaic module, a photothermal module and a first adhesive film, wherein the upper side of the first adhesive film is attached to the photovoltaic module, and the lower side of the first adhesive film is attached to the photothermal module; The photothermal module comprises a heat collecting plate, an air cavity, a water pipe and foam metal; The air cavity is arranged at the lower side of the heat collecting plate, the water pipe and the foam metal are arranged in the air cavity, and the foam metal is attached to the upper wall in the air cavity.

2. The photovoltaic-thermal integrated assembly according to claim 1, characterized in that: The photothermal module further comprises a water valve and an air valve, wherein the water valve is used to control the circulation of water in the water pipe, and the air valve is used to control the circulation of air in the air cavity.

3. The photovoltaic-thermal integrated assembly according to claim 1, characterized in that: The photothermal module further comprises a plurality of partitions, wherein the plurality of partitions divide the air cavity into a plurality of sub-air cavities, and the plurality of sub-air cavities correspond one-to-one to a plurality of battery cells in the battery cell group included in the photovoltaic module; The water pipe and the foam metal are disposed in each of the plurality of sub-air cavities.

4. The photovoltaic-thermal integrated assembly according to claim 3, characterized in that: The photothermal module further comprises a plurality of first control ports; The plurality of first control ports correspond one-to-one to the water pipes in the plurality of sub-air cavities, and the first control ports are used to control the flow of water in the corresponding water pipes.

5. The photovoltaic-thermal integrated assembly according to claim 3, characterized in that: The photothermal module further includes a plurality of second control ports; The plurality of second control ports correspond one-to-one to the plurality of sub-air cavities, and the second control ports are used to control the circulation of air in the corresponding sub-air cavities.

6. The photovoltaic-thermal integrated assembly according to claim 1, characterized in that: It also includes insulation; The heat-insulating layer is arranged around and at the bottom of the photothermal module.

7. The photovoltaic-thermal integrated assembly according to any one of claims 1 to 6, characterized in that: The photovoltaic module comprises a photovoltaic cover plate, a second adhesive film, a battery cell group, a third adhesive film, and a photovoltaic back plate from top to bottom, and the battery cell group includes a plurality of battery cells.

8. The photovoltaic-thermal integrated assembly according to claim 7, characterized in that: The photovoltaic module further includes a fourth adhesive film and a steel plate; The upper side of the fourth adhesive film is bonded to the photovoltaic back sheet, and the lower side of the fourth adhesive film is bonded to the steel plate.

9. The photovoltaic-thermal integrated assembly according to claim 8, characterized in that: A preset installation area is arranged on the steel plate.

10. A photovoltaic-thermal integrated system, characterized in that: It comprises a photovoltaic-thermal integrated component as described in any one of claims 1 to 9.

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