Photovoltaic and photo-thermal integrated power generation light condensing device

Abstract

The utility model discloses a photovoltaic light -heat integrated power generation condensing device. The utility model discloses heat transfer medium in heat energy circulation subassembly absorbs the heat after the heat of photovoltaic panel power generation process produces, and the heat transmission is to the external heat energy utilization device and carries out power generation, has improved the heat energy utilization rate, and guarantees the work of double -faced solar photovoltaic cell panel under the suitable working temperature, and the photoelectric conversion efficiency is high, and prolongs its service life. Further, in order to better utilize incident light, the scheme of two hyperboloid reflectors cooperating with parabolic reflectors is adopted, focusing the sunlight that the hyperboloid reflector is difficult to utilize on the heat collecting pipe, further improving the energy of the heat transfer medium, realizing photovoltaic light -heat combined power generation, improving energy utilization efficiency, and reducing the floor area.

Description

Technical Field

[0001] This invention relates to the field of solar energy utilization technology, and more specifically, to a photovoltaic-thermal integrated power generation concentrator. Background Technology

[0002] Photovoltaic-thermal integration technology is an innovative energy technology that combines photovoltaic power generation with solar thermal utilization. It aims to overcome the limitations of traditional photovoltaic or solar thermal systems that rely solely on single energy conversion, achieving efficient and comprehensive utilization of solar energy. In traditional bifacial solar photovoltaic panels, approximately 80% of solar energy is lost as heat during power generation. This leads to increased cell temperature, further reducing photoelectric conversion efficiency. In extreme cases, the module temperature can reach 80°C, severely impacting power generation efficiency and lifespan. Existing photovoltaic-thermal integration devices require separate photovoltaic heat dissipation components or collector tubes, resulting in a significant amount of unutilized heat and requiring substantial floor space.

[0003] Bifacial photovoltaic (PV) concentrators are highly efficient solar energy utilization systems that combine bifacial power generation with concentrating technology. Traditional monofacial solar PV panels can only utilize incident light from the front, while bifacial PV modules can additionally receive diffused light from the ground on the back. Combined with concentrating technology, the light energy density can theoretically be increased by tens of times, resulting in a 30%-50% increase in overall power generation compared to traditional modules. However, existing technologies face the challenge of thermal management under high-concentration conditions, namely, insufficient cooling capacity leading to excessively high cell temperatures, which affects power generation efficiency and poses safety hazards. Utility Model Content

[0004] This invention overcomes the problem of insufficient cooling capacity in existing technologies, which leads to excessively high battery temperatures. It provides a photovoltaic-thermal integrated power generation concentrator to solve the problem of insufficient cooling capacity.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A photovoltaic-thermal integrated power generation concentrator includes a solar photovoltaic panel, a thermal energy circulation component, and a thermal energy utilization device.

[0007] The thermal energy circulation component includes a light-transmitting box, a heat transfer medium, an output pipe, and an input pipe, with the solar photovoltaic panel installed in the light-transmitting box;

[0008] The heat energy utilization device is connected to the output pipe and the input pipe;

[0009] The transparent box is filled with a heat transfer medium, which exchanges heat with the solar photovoltaic panel. The heat transfer medium flows into the heat energy utilization device through the output pipe, and then flows back from the heat energy utilization device through the input pipe to exchange heat with the solar photovoltaic panel.

[0010] A further technical solution is that the thermal energy circulation component also includes a temperature sensor, a controller, and a pump;

[0011] The pump is used to control the flow of the heat transfer medium;

[0012] The controller is connected to a temperature sensor and a pump.

[0013] A further technical solution is that the light-transmitting box includes a light-transmitting surface, and the light source mainly shines on the solar photovoltaic panel through the light-transmitting surface;

[0014] The light-transmitting surface of the light-transmitting box is made of a material with a light transmittance greater than 85% and a temperature resistance greater than 100℃.

[0015] A further technical solution is that the photovoltaic-thermal integrated power generation concentrator also includes a concentrating module;

[0016] The light-concentrating component is located next to the light-transmitting box and reflects sunlight onto the solar photovoltaic panel.

[0017] A further technical solution is that the light-concentrating component includes two hyperboloidal reflectors and one parabolic reflector;

[0018] The solar photovoltaic panel is a double-sided solar photovoltaic panel, which is disposed on the intersecting plane of the reflected light paths of two hyperboloid reflectors;

[0019] The light-concentrating components are located on both sides of the light-transmitting box, reflecting the incident sunlight onto the double-sided solar photovoltaic panels;

[0020] The parabolic reflector is positioned below the hyperboloid reflector, and the edge of the parabolic reflector is connected to the lower edges of the two hyperboloid reflectors respectively.

[0021] The thermal energy circulation assembly also includes a conversion tube and a heat collection tube. The heat transfer medium is sequentially connected to the conversion tube, the heat collection tube, the output tube, and the thermal energy utilization device. The heat collection tube is fixed at the focal line of the parabolic reflector.

[0022] A further technical solution is that the photovoltaic-thermal integrated power generation concentrator also includes a rotating support component;

[0023] The photovoltaic-thermal integrated power generation concentrator is installed on a rotating support assembly, enabling the entire photovoltaic-thermal integrated power generation concentrator to rotate.

[0024] A further technical solution is that the rotating support assembly includes a rotating shaft, a lower support structure, a mirror back frame, a heat collection tube support, and a light-transmitting box fixing structure;

[0025] The lower support structure supports the mirror back frame, and the lower support structure is provided with a pivot mounting position;

[0026] The rotating shaft is connected to the mirror back frame, causing the mirror back frame to rotate around the shaft;

[0027] The double-sided solar photovoltaic panels are mounted on a mirror-like back frame;

[0028] The lower end of the solar collector tube is fixed to the solar concentrator assembly;

[0029] The lower end of the light-transmitting box fixing structure is fixed to the mirror back frame.

[0030] Compared with existing technologies, this invention has at least the following beneficial effects: The heat transfer medium in the thermal energy circulation component of this invention absorbs the heat generated during the photovoltaic panel's power generation process and then transfers the heat to an external thermal energy utilization device for power generation, improving thermal energy utilization efficiency and ensuring that the bifacial solar photovoltaic panels operate at a suitable working temperature, achieving high photoelectric conversion efficiency while extending their service life. Furthermore, to better utilize incident light, a scheme combining two hyperboloidal reflectors with parabolic reflectors is adopted, focusing sunlight that is difficult for the curved reflectors to utilize onto the heat collection tube, further increasing the energy of the heat transfer medium and realizing combined photovoltaic and solar thermal power generation, improving energy utilization efficiency while reducing the footprint. Attached Figure Description

[0031] Figure 1 A schematic diagram showing the connection between the light-transmitting enclosure and the temperature sensor and double-sided solar photovoltaic panels;

[0032] Figure 2 Optical path diagram of a solar concentrator with a positive incident trough;

[0033] Figure 3 This is a schematic diagram of the working principle of the thermal energy cycle component.

[0034] Figure 4 This is a three-dimensional structural diagram of this embodiment;

[0035] In the diagram, 1-Solar photovoltaic panel, 2-Thermal energy circulation component, 21-Light-transmitting box, 22-Heat transfer medium, 23-Output pipe, 24-Input pipe, 25-Temperature sensor, 26-Conversion pipe, 27-Heat collector pipe, 3-Concentrating component, 31-Hyperbolic reflector, 32-Parabolic reflector, 4-Rotating support component, 41-Rotating shaft, 42-Lower support structure, 43-Mirror back frame, 44-Heat collector pipe support, 45-Light-transmitting box fixing structure. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0038] A photovoltaic-thermal integrated power generation concentrator, see [link / reference] Figure 1 It includes: 1. Solar photovoltaic cell panel; 2. Thermal energy circulation component; 3. Thermal energy utilization device; 4. Concentrating component; 5. Rotary support component.

[0039] The thermal energy circulation component 2 includes a light-transmitting box 21, a heat transfer medium 22, an output pipe 23, and an input pipe 24, and the solar photovoltaic panel 1 is installed in the light-transmitting box 21;

[0040] In this embodiment, the solar photovoltaic panel 1 is installed in the light-transmitting box 21.

[0041] During power generation, after the solar photovoltaic panel 1 generates heat, the heat transfer medium 22 exchanges heat with the solar photovoltaic panel 1, and then outputs the heat transfer medium 22 to the heat energy utilization device for power generation through the heat energy circulation component 2. The above steps improve the heat energy utilization rate and ensure that the bifacial solar photovoltaic panel 1 operates at a suitable operating temperature. The principle is explained in [reference needed]. Figure 3 This improves photoelectric conversion efficiency while extending its service life.

[0042] In a further preferred embodiment, the thermal energy circulation assembly 2 further includes a temperature sensor 25, a controller, and a pump;

[0043] The pump is used to control the flow of the heat transfer medium 22;

[0044] The controller is connected to the temperature sensor 25 and the pump.

[0045] The heat energy utilization device is connected to the output pipe 23 and the input pipe 24;

[0046] The light-transmitting box 21 is filled with a heat transfer medium 22, which exchanges heat with the solar photovoltaic panel 1. The heat transfer medium 22 flows into the heat energy utilization device through the output pipe 23, and then flows back from the heat energy utilization device through the input pipe 24 to exchange heat with the solar photovoltaic panel 1.

[0047] In this embodiment, the temperature sensor 25 is attached to the lower part of the light-transmitting box 21. When the temperature of the heat transfer medium 22 is higher than the suitable working temperature of the double-sided solar photovoltaic panel 1, the electrical signal is transmitted to the controller, and the pump is turned on to make the heat transfer medium 22 flow along the heat transfer pipe.

[0048] Once the temperature drops to the specified temperature, the pump is turned off. If the temperature has not reached the set temperature, heat exchange for power generation is less efficient, and the solar photovoltaic panel 1 is not significantly affected. Therefore, determining whether to perform heat circulation based on temperature conditions has better efficiency.

[0049] The light-transmitting box 21 includes a light-transmitting surface, through which the light source mainly illuminates the solar photovoltaic panel 1;

[0050] The light-transmitting surface of the light-transmitting box 21 is made of a material with a light transmittance greater than 85% and a temperature resistance greater than 100°C. For example, polymethyl methacrylate or tempered glass can be used.

[0051] The light-concentrating component 3 includes two hyperboloid reflectors 31 and one parabolic reflector 32;

[0052] The solar photovoltaic panel 1 is a double-sided solar photovoltaic panel 1, which is disposed on the intersecting plane of the reflected light paths of the two hyperboloid reflectors 31.

[0053] The light-concentrating component 3 is disposed on both sides of the light-transmitting box 21 to reflect the incident sunlight onto the double-sided solar photovoltaic panel 1;

[0054] The parabolic reflector 32 is positioned below the hyperboloid reflector 31, and the edge of the parabolic reflector 32 is connected to the lower edge of each of the two hyperboloid reflectors 31. (See below) Figure 2 ;

[0055] The thermal energy circulation assembly 2 also includes a conversion tube 26 and a heat collection tube 27. The heat transfer medium 22 is connected to the conversion tube 26, the heat collection tube 27, the output tube 23, and the thermal energy utilization device in sequence. The heat collection tube 27 is fixed at the focal line of the parabolic reflector 32.

[0056] The combination of two hyperboloidal reflectors 31 and parabolic reflectors 32 can focus sunlight that is difficult for the hyperboloidal reflectors 31 onto the heat collection tube 27, thereby further improving the energy and power generation efficiency of the heat transfer medium 22.

[0057] The photovoltaic-thermal integrated power generation concentrator is mounted on the rotating support assembly 4, enabling the entire photovoltaic-thermal integrated power generation concentrator to rotate. (See also...) Figure 4 .

[0058] The rotating support assembly 4 can adopt various structures to achieve the supporting rotation effect. In this embodiment, the rotating support assembly 4 includes a rotating shaft 41, a lower support structure 42, a mirror back frame 43, a heat collection tube support 44, and a light-transmitting box fixing structure 45.

[0059] The lower support structure 42 supports the mirror back frame 43, and the lower support structure 42 is provided with a mounting position for the rotating shaft 41;

[0060] The rotating shaft 41 is connected to the mirror back frame 43, which drives the mirror back frame 43 to rotate around the shaft;

[0061] It should be noted that the rotating shaft 41 can adopt various structures and motion sources. In this embodiment, a stationary planetary gear system is adopted, with the rotating shaft 41 serving as the sun gear. The surface is provided with gear teeth that mesh with several planetary gears in the support structure. The planetary gears in the fixed seat rotate freely around the shaft and do not rotate with the rotating shaft 41. When the rotating shaft 41 rotates, it only drives the mirror back frame 43 and the upper component to rotate around the shaft together.

[0062] The double-sided solar photovoltaic panel 1 is mounted on the mirror back frame 43;

[0063] The lower end of the heat collection tube support 44 is fixed on the concentrating component 3, and the heat collection tube 27 is installed on the heat collection tube support 44.

[0064] The lower end of the light-transmitting box fixing structure 45 is fixed on the mirror back frame 43, and the light-transmitting box is installed on the light-transmitting box fixing structure 45.

[0065] Although the present invention has been described herein with reference to illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and improvements can be made to the components and / or layout of the subject matter combination within the scope of the present application. Besides variations and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A photovoltaic-thermal integrated power generation concentrator, characterized in that, This includes solar photovoltaic panels, thermal energy circulation components, and thermal energy utilization devices; The thermal energy circulation component includes a light-transmitting box, a heat transfer medium, an output pipe, and an input pipe, with the solar photovoltaic panel installed in the light-transmitting box; The heat energy utilization device is connected to the output pipe and the input pipe; The transparent box is filled with a heat transfer medium, which exchanges heat with the solar photovoltaic panel. The heat transfer medium flows into the heat energy utilization device through the output pipe, and then flows back from the heat energy utilization device through the input pipe to exchange heat with the solar photovoltaic panel.

2. The photovoltaic and photo-thermal integrated power generation condensing device according to claim 1, characterized in that, The thermal energy circulation assembly also includes a temperature sensor, a controller, and a pump; The pump is used to control the flow of the heat transfer medium; The controller is connected to a temperature sensor and a pump.

3. The photovoltaic and photo-thermal integrated power generation condensing device according to claim 1, characterized in that, The light-transmitting box includes a light-transmitting surface, through which the light source mainly shines onto the solar photovoltaic panel; The light-transmitting surface of the light-transmitting box is made of a material with a light transmittance greater than 85% and a temperature resistance greater than 100℃.

4. The photovoltaic and photo-thermal integrated power generation and light collection device according to any one of claims 1-3, wherein, Including, light-concentrating components; The light-concentrating component is located next to the light-transmitting box and reflects sunlight onto the solar photovoltaic panel.

5. The photovoltaic and photo-thermal integrated power generation condensing device according to claim 4, characterized in that, The light-concentrating component includes two hyperboloidal reflectors and one parabolic reflector; The solar photovoltaic panel is a double-sided solar photovoltaic panel, which is disposed on the intersecting plane of the reflected light paths of two hyperboloid reflectors; The light-concentrating components are located on both sides of the light-transmitting box, reflecting the incident sunlight onto the double-sided solar photovoltaic panels; The parabolic reflector is positioned below the hyperboloid reflector, and the edge of the parabolic reflector is connected to the lower edges of the two hyperboloid reflectors respectively. The thermal energy circulation assembly also includes a conversion tube and a heat collection tube. The heat transfer medium is sequentially connected to the conversion tube, the heat collection tube, the output tube, and the thermal energy utilization device. The heat collection tube is fixed at the focal line of the parabolic reflector.

6. The photovoltaic and photo-thermal integrated power generation condensing device according to claim 5, characterized in that, It also includes a rotating support assembly; The photovoltaic-thermal integrated power generation concentrator is installed on a rotating support assembly, enabling the entire photovoltaic-thermal integrated power generation concentrator to rotate.

7. The photovoltaic and photo thermal integrated power generation condensing device according to claim 6, characterized in that, The rotating support assembly includes a rotating shaft, a lower support structure, a mirror back frame, a heat collection tube support, and a light-transmitting box fixing structure; The lower support structure supports the mirror back frame, and the lower support structure is provided with a pivot mounting position; The rotating shaft is connected to the mirror back frame, causing the mirror back frame to rotate around the shaft; The double-sided solar photovoltaic panels are mounted on a mirror-like back frame; The lower end of the solar collector tube is fixed to the solar concentrator assembly; The lower end of the light-transmitting box fixing structure is fixed to the mirror back frame.

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