Sun-shading photovoltaic photo-thermal system

Abstract

The invention discloses a sun-shading photovoltaic photo-thermal system which comprises a cooling plate, a heat pump unit and a photovoltaic power generation assembly, the back face of the photovoltaic power generation assembly is attached to the front face of the cooling plate, the cooling plate is provided with a cooling assembly, and the cooling assembly is connected with the heat pump unit through a pipeline. The photovoltaic power generation assembly is cooled through the cooling assembly, a refrigerant takes away heat generated by the photovoltaic power generation assembly, the preheated refrigerant enters the heat pump unit through a pipeline for heat exchange, the heat pump unit is preheated to reduce power consumption, and the cooled refrigerant is pumped into the cooling assembly again for circulation. Heat dissipation and cooling of the photovoltaic power generation assembly are achieved, the power generation efficiency is improved, aging and material stripping risks caused by too high temperature are reduced, a heat source of a heat pump unit can be preheated, power consumption is reduced, and energy is reasonably utilized.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic modules, and particularly to a shading photovoltaic-thermal system. Background Art

[0002] Solar photovoltaic modules effectively utilize clean energy and are widely used in various technical fields. In summer, the temperature on the back of the solar cell module can reach 60 to 70 °C. Compared with the condition of the rated parameter calibration of 25 °C, the peak power loss rate of the module is about 30% at this time. Therefore, it is necessary to cool the photovoltaic module. Currently, there are few cooling solutions at the module end, the process is complex, and the cost is high, which is not conducive to large-scale promotion and use.

[0003] Furthermore, for a building equipped with a heat pump cycle system such as an air source heat pump, it is impossible to preheat the heat pump module, which also causes waste of energy.

[0004] Therefore, how to provide a shading photovoltaic-thermal system that can effectively cool down and make full use of energy is a technical problem that those skilled in the art need to solve currently. Summary of the Invention

[0005] The purpose of the present invention is to provide a shading photovoltaic-thermal system, which cools the photovoltaic power generation module through a cooling module, and at the same time transfers the heat to the heat pump module, effectively cooling down and making full use of energy.

[0006] To solve the above technical problems, the present invention provides a shading photovoltaic-thermal system, including a cooling plate, a heat pump unit, and a photovoltaic power generation module. The back of the photovoltaic power generation module is attached to the front of the cooling plate. The cooling plate is provided with a cooling module, and the cooling module is connected to the heat pump unit through a pipeline.

[0007] Preferably, the refrigerant outlet of the cooling module is connected to the refrigerant inlet of the heat pump unit through a heat collection pipe, and the refrigerant outlet of the heat pump unit is connected to the refrigerant inlet of the cooling module through a refrigerant return pipe.

[0008] Preferably, a circulation pump is provided on the heat collection pipe.

[0009] Preferably, it includes multiple groups of the photovoltaic power generation modules and multiple groups of the cooling modules. The multiple groups of the cooling modules are respectively connected to the circulation pump through multiple heat collection pipes, the circulation pump is connected to the heat pump unit through a main pipe, and the multiple groups of the cooling modules are respectively connected to the heat pump unit through multiple refrigerant return pipes.

[0010] Preferably, the cooling module includes a coil pipe attached to the back of the cooling plate, and both ends of the coil pipe are open at both ends of the cooling plate.

[0011] Preferably, a domestic water tank is further included, a heating component is arranged in the domestic water tank, and the heating component is connected to the cooling component.

[0012] Preferably, a bracket connecting the outer wall of the wall is further included, and the cooling plate is installed on the bracket.

[0013] Preferably, the bracket includes a horizontally arranged horizontal sunshade support frame, the inner end of the horizontal sunshade support frame is connected to the outer wall of the wall, and the cooling plate is closely attached to the photovoltaic power generation component and is inclined and fixed on the horizontal sunshade support frame.

[0014] Preferably, the bracket includes a vertically arranged vertical sunshade support frame, the inner side of the vertical sunshade support frame is connected to the outer wall of the wall, and the cooling plate is closely attached to the photovoltaic power generation component and is vertically arranged and installed on the outer side of the vertical sunshade support frame.

[0015] Preferably, the bracket includes a horizontal bracket, a vertical bracket and an inclined bracket, the vertical bracket is connected to the outer wall of the wall, the inner end of the horizontal bracket is connected to the lower end of the vertical bracket, the two ends of the inclined bracket are respectively connected to the upper end of the vertical bracket and the outer end of the horizontal bracket, and the cooling plate is closely attached to the photovoltaic power generation component and is inclined and arranged and installed on the outer side of the inclined bracket.

[0016] The present invention provides a sunshade photovoltaic-thermal system, which includes a cooling plate, a heat pump unit and a photovoltaic power generation component. The back surface of the photovoltaic power generation component is attached to the front surface of the cooling plate. The cooling plate is provided with a cooling component, and the cooling component is connected to the heat pump unit through a pipeline. The cooling component cools down the photovoltaic power generation component. The refrigerant takes away the heat generated by the photovoltaic power generation component, and the preheated refrigerant enters the heat pump unit through a pipeline for heat exchange, preheating the heat pump unit to reduce the power consumption. The cooled refrigerant is pumped back to the cooling component for circulation. That is, it realizes the heat dissipation and cooling of the photovoltaic power generation component, improves the power generation efficiency, reduces the risks of aging and material peeling caused by too high temperature, and can also preheat the heat source of the heat pump unit to reduce the power consumption and rationally utilize energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a specific embodiment of the sunshade photovoltaic-thermal system provided by the present invention;

[0018] Figure 2 It is a schematic structural diagram of Embodiment 1 of the sunshade photovoltaic-thermal system provided by the present invention;

[0019] Figure 3 It is a schematic structural diagram of Embodiment 2 of the sunshade photovoltaic-thermal system provided by the present invention;

[0020] Figure 4This is a schematic structural diagram of the third embodiment of the sunshade photovoltaic thermal system provided by the present invention;

[0021] Figure 5 This is a schematic structural diagram of the fourth embodiment of the sunshade photovoltaic thermal system provided by the present invention.

[0022] Among them, there are cooling plate 1, heat pump unit 2, photovoltaic power generation component 3, cooling component 4, heat collection pipe 5, refrigerant return pipe 6, circulation pump 7, wall 8, horizontal sunshade support frame 9, cushion block 10, vertical sunshade support frame 11, horizontal bracket 12, vertical bracket 13, and inclined bracket 14. DETAILED DESCRIPTION

[0023] The core of the present invention is to provide a sunshade photovoltaic thermal system, which cools down the photovoltaic power generation components through cooling components and transfers heat to heat pump components at the same time, effectively cooling down and making full use of energy.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Please refer to Figure 1 , Figure 1 This is a schematic structural diagram of a specific implementation of the sunshade photovoltaic thermal system provided by the present invention.

[0026] The specific embodiment of the present invention provides a sunshade photovoltaic thermal system, including a cooling plate 1, a heat pump unit 2 and a photovoltaic power generation component 3. The side of the photovoltaic power generation component 3 facing the sunlight is the front side, and the side of the photovoltaic power generation component 3 facing away from the sunlight is the back side. The back side of the photovoltaic power generation component 3 is in contact with the front side of the cooling plate 1. The cooling plate 1 is provided with a cooling component 4, and the cooling component 4 is connected to the heat pump unit 2 through a pipeline. The heat of the photovoltaic power generation component 3 is conducted to the cooling plate 1. Driven by the circulating pump, the heat in the cooling plate 1 is collected in the pipeline and enters the heat pump unit 2 for heat exchange. The cooled refrigerant is pumped from the return pipe to the cooling plate 1 at the back of the photovoltaic power generation component 3.

[0027] The photovoltaic power generation component 3 is cooled by the cooling component 4, and the refrigerant takes away the heat generated by the photovoltaic power generation component 3. The preheated refrigerant enters the heat pump unit 2 through the pipeline for heat exchange, preheats the heat pump unit 2 to reduce power consumption, and the cooled refrigerant is pumped back to the cooling component 4 for circulation. This achieves heat dissipation and cooling of the photovoltaic power generation component 3, improves power generation efficiency, reduces the risk of aging and material stripping caused by excessive temperature, and preheats the heat source of the heat pump unit 2 to reduce power consumption, rationally utilizes energy, is more energy-efficient, and achieves green and low-carbon operation.

[0028] Further, the refrigerant outlet of the cooling component 4 is connected to the refrigerant inlet of the heat pump unit 2 through the heat collection pipe 5, and the refrigerant outlet of the heat pump unit 2 is connected to the refrigerant inlet of the cooling component 4 through the refrigerant return pipe 6. A refrigerant circulation loop is realized. Preferably, a circulation pump 7 may also be provided on the heat collection pipe 5 to provide auxiliary power for the circulation of the refrigerant. Temperature detectors and pressure detectors may also be provided on the pipeline to monitor the working state of the refrigerant in real time. The refrigerant may be a gaseous refrigerant or a liquid refrigerant. Among them, multiple heat pump units may be paralleled.

[0029] In the sunlight-shading photovoltaic-thermal system provided by the specific embodiment of the present invention, on the outer wall of the wall, more groups of photovoltaic power generation components 3 may be provided to fully cover the outer wall of the wall. The photovoltaic power generation components 3 may be an array formed by connecting multiple pieces in series or in parallel, and after being connected in series or in parallel, they enter the heat collection pipeline. Corresponding multiple groups of cooling components 4 need to be provided. The multiple groups of cooling components 4 are respectively connected to the circulation pump 7 through multiple heat collection pipes 5, and the circulation pump 7 is connected to the heat pump unit 2 through the main pipe. The multiple groups of cooling components 4 are respectively connected to the heat pump unit 2 through multiple refrigerant return pipes 6. The layout and connection mode of each component may also be adjusted according to the situation, which are all within the protection scope of the present invention.

[0030] Preferably, the cooling component 4 includes a coiled pipe attached to the back of the cooling plate 1, and the two open ends of the coiled pipe are respectively located at the two ends of the cooling plate 1.

[0031] A domestic water tank may also be provided, and a heating component is arranged in the domestic water tank. The heating component is connected to the cooling component 4. It can directly preheat the domestic water tank to provide domestic hot water. The hot water in summer can directly meet the daily life application, and electric auxiliary heating can be supported in winter.

[0032] Please refer to Figures 2 to 5 , Figure 2 , which is a schematic structural diagram of Embodiment 1 of the sunlight-shading photovoltaic-thermal system provided by the present invention; Figure 3 , which is a schematic structural diagram of Embodiment 2 of the sunlight-shading photovoltaic-thermal system provided by the present invention; Figure 4 , which is a schematic structural diagram of Embodiment 3 of the sunlight-shading photovoltaic-thermal system provided by the present invention; Figure 5 , which is a schematic structural diagram of Embodiment 4 of the sunlight-shading photovoltaic-thermal system provided by the present invention.

[0033] On the basis of the sunlight-shading photovoltaic-thermal system provided by the above specific embodiments, a bracket connecting the outer wall of the wall 8 is further included, and the cooling plate 1 is installed on the bracket. The cooling plate 1 is stably supported by the bracket.

[0034] In the first embodiment, the photovoltaic power generation module 3 is arranged on the outer wall of the wall body 8, and the front side of the photovoltaic power generation module 3 tends to be in a horizontal state. However, in order to face the sun at a better angle, the photovoltaic power generation module 3 can be slightly inclined. The bracket includes a horizontally arranged horizontal sunshade support frame 9. The inner end of the horizontal sunshade support frame 9 is connected to the outer wall of the wall body 8. The horizontal sunshade support frame 9 is connected to the wall body 8 by bolts. The cooling plate 1 is closely attached to the photovoltaic power generation module 3 and is inclined and fixed on the horizontal sunshade support frame 9. Specifically, at the same time, a cushion block 10 is arranged at the inner end of the horizontal sunshade support frame 9. One end of the cooling plate 1 is connected to the cushion block 10, and the other end of the cooling plate 1 is connected to the outer end of the horizontal sunshade support frame 9. That is, the cooling plate 1 is laid on the horizontally extending horizontal sunshade support frame 9. At the same time, the heat pump unit 2 and the circulation pump 7 are arranged inside the wall body 8, and the pipelines pass through the wall body for connection.

[0035] In the second embodiment, the photovoltaic power generation module 3 is arranged on the outer wall of the wall body 8, and the front side of the photovoltaic power generation module 3 is vertically arranged. The bracket includes a vertically arranged vertical sunshade support frame 11. The inner side of the vertical sunshade support frame 11 is connected to the outer wall of the wall body 8 and is connected to the wall body 8 by bolts. The cooling plate 1 is closely attached to the photovoltaic power generation module 3 and is vertically arranged and installed on the outside of the vertical sunshade support frame 11. That is, the cooling plate 1 is laid on the outer wall of the wall body 8. At the same time, the heat pump unit 2 and the circulation pump 7 are arranged inside the wall body 8, and the pipelines pass through the wall body for connection.

[0036] In the third embodiment, the photovoltaic power generation module 3 is arranged on the outer wall of the wall body 8 under the balcony window, and the front side of the photovoltaic power generation module 3 is vertically arranged. A groove is provided on the wall body 8 under the balcony window. The bracket includes a vertically arranged vertical sunshade support frame 11. The vertical sunshade support frame 11 covers the groove. The upper and lower ends of the vertical sunshade support frame 11 are respectively connected to the upper and lower edge positions of the groove and are connected by bolts. The cooling plate 1 is closely attached to the photovoltaic power generation module 3 and is vertically arranged and installed on the outside of the vertical sunshade support frame 11. That is, the cooling plate 1 is laid on the outer wall of the wall body 8. At the same time, the heat pump unit 2 and the circulation pump 7 are arranged inside the groove, and the pipelines are directly connected.

[0037] In the fourth embodiment, the photovoltaic power generation module 3 is arranged on the outer wall of the wall body 8 under the balcony window, and the front side of the photovoltaic power generation module 3 is inclined. A groove is provided on the wall body 8 under the balcony window, and an auxiliary wall is arranged in the groove. The bracket includes a horizontal bracket 12, a vertical bracket 13 and an inclined bracket 14. The vertical bracket 13 is connected to the vertical auxiliary wall. The inner end of the horizontal bracket 12 is connected to the lower end of the vertical bracket 13. The two ends of the inclined bracket 14 are respectively connected to the upper end of the vertical bracket 13 and the outer end of the horizontal bracket 12, forming a triangular support structure. The cooling plate 1 is closely attached to the photovoltaic power generation module 3 and is inclined and installed on the outside of the inclined bracket 14. That is, the cooling plate 1 is laid on the inclined bracket to adjust the angle of receiving sunlight. At the same time, the heat pump unit 2 and the circulation pump 7 are arranged inside the groove, and the pipelines pass through the auxiliary wall for connection.

[0038] Specifically, each bracket is connected to the cooling plate 1 by bolts, and the bracket can be spliced by plate members or combined by rod members into a frame structure, both of which are within the protection scope of the present invention.

[0039] The above has introduced the sunshade photovoltaic and solar thermal system provided by the present invention in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A sunshade photovoltaic thermal system, characterized in that: It comprises a cooling plate (1), a heat pump unit (2) and a photovoltaic power generation component (3), wherein the back surface of the photovoltaic power generation component (3) is attached to the front surface of the cooling plate (1), the cooling plate (1) is provided with a cooling component (4), and the cooling component (4) is connected to the heat pump unit (2) via a pipeline.

2. The sunshade photovoltaic thermal system according to claim 1, characterized in that: The refrigerant outlet of the cooling component (4) is connected to the refrigerant inlet of the heat pump unit (2) via a heat collecting pipe (5), and the refrigerant outlet of the heat pump unit (2) is connected to the refrigerant inlet of the cooling component (4) via a refrigerant return pipe (6).

3. The sunshade photovoltaic thermal system according to claim 2, characterized in that: The heat collection pipe (5) is provided with a circulation pump (7).

4. The sunshade photovoltaic thermal system according to claim 3, characterized in that: It comprises a plurality of groups of photovoltaic power generation components (3) and a plurality of groups of cooling components (4), wherein the plurality of groups of cooling components (4) are connected to the circulation pump (7) through a plurality of heat collecting pipes (5), the circulation pump (7) is connected to the heat pump unit (2) through a main pipe, and the plurality of groups of cooling components (4) are connected to the heat pump unit (2) through a plurality of refrigerant return pipes (6).

5. The sunshade photovoltaic thermal system according to claim 1, characterized in that: The cooling assembly (4) comprises a coil attached to the back of the cooling plate (1), and openings at both ends of the coil are respectively located at two ends of the cooling plate (1).

6. The sunshade photovoltaic thermal system according to claim 1, characterized in that: It also comprises a domestic water tank, in which a heating component is arranged, and the heating component is connected to the cooling component (4).

7. The sunshade photovoltaic thermal system according to any one of claims 1 to 6, characterized in that: It also includes a bracket connected to the outer wall of the wall (8), and the cooling plate (1) is installed on the bracket.

8. The sunshade photovoltaic thermal system according to claim 7, characterized in that: The support comprises a horizontal sunshade support frame (9) arranged horizontally, the inner end of the horizontal sunshade support frame (9) being connected to the outer wall of the wall (8), and the cooling plate (1) being tightly fitted to the photovoltaic power generation assembly (3) and being tilted and fixed on the horizontal sunshade support frame (9).

9. The sunshade photovoltaic thermal system according to claim 7, characterized in that: The bracket comprises a vertical sunshade support frame (11) arranged vertically, the inner side of the vertical sunshade support frame (11) is connected to the outer wall of the wall (8), and the cooling plate (1) is tightly fitted with the photovoltaic power generation component (3) and is vertically arranged and installed on the outer side of the vertical sunshade support frame (11).

10. The sunshade photovoltaic thermal system according to claim 7, characterized in that: The bracket comprises a horizontal bracket (12), a vertical bracket (13) and an inclined bracket (14); the vertical bracket (13) is connected to the outer wall of the wall; the inner end of the horizontal bracket (12) is connected to the lower end of the vertical bracket (13); the two ends of the inclined bracket (14) are respectively connected to the upper end of the vertical bracket (13) and the outer end of the horizontal bracket (12); the cooling plate (1) is tightly fitted with the photovoltaic power generation assembly (3) and is arranged obliquely and installed on the outer side of the inclined bracket (14).

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