Heat dissipation system of photovoltaic panel and control method of heat dissipation system

Abstract

The invention belongs to the technical field of photovoltaic panels, and discloses a heat dissipation system of a photovoltaic panel and a control method of the heat dissipation system. Each heat dissipation piece comprises a connecting plate fixed to the heat conduction plate and an extending plate which is fixedly connected with the connecting plate and is in a suspended shape. The temperature sensor is used for detecting the temperature of the connecting plate to obtain temperature data; the cooling assembly is used for cooling the extension plate; and the control device is used for acquiring temperature data in real time and controlling the cooling assembly to start or stop according to different temperature data so as to realize different heat dissipation modes of the photovoltaic panel at different temperatures. Heat generated by the photovoltaic panel is transmitted to the connecting plate and the extension plate through the heat conducting plate, natural heat dissipation and cooling can be performed by exposing the connecting plate and the extension plate in the air, and the cooling efficiency is greatly improved by starting the cooling assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic panels, and particularly relates to a heat dissipation system for a photovoltaic panel and a control method thereof. Background Art

[0002] A solar panel, namely a solar cell, is a thin film of a photoelectric semiconductor that directly generates electricity using sunlight and can be called a photovoltaic panel. During the process of converting solar energy into electrical energy by existing photovoltaic panels, excess energy generated after the photon transition of semiconductor materials is converted into heat, resulting in an increase in the temperature of the photovoltaic module. This increase in temperature directly affects the power generation efficiency of the photovoltaic panel because the electrical efficiency of the photovoltaic cell decreases as the temperature rises. Therefore, heat dissipation is crucial for maintaining the efficient operation of the photovoltaic panel. The traditional heat dissipation method for photovoltaic panels is to directly place them in the air for natural heat dissipation, and this method has a slow heat dissipation efficiency. Therefore, we propose a heat dissipation system for a photovoltaic panel and a control method thereof to solve the above problems. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a heat dissipation system for a photovoltaic panel and a control method thereof, which solves the problem that the increase in the temperature of the photovoltaic panel affects the power generation efficiency.

[0004] The present invention is achieved as follows: A heat dissipation system for a photovoltaic panel includes:

[0005] A heat conducting plate fixed to the back of the photovoltaic panel;

[0006] A plurality of heat dissipation components arranged on the side of the heat conducting plate away from the photovoltaic panel. Each heat dissipation component includes a connecting plate fixed to the heat conducting plate and an extending plate fixedly connected to the connecting plate and suspended. When the photovoltaic panel generates heat, the heat is transferred to the extending plate through the heat conducting plate and the connecting plate for heat dissipation;

[0007] A temperature sensor fixed to the connecting plate, used to detect the temperature of the connecting plate to obtain temperature data;

[0008] A cooling component for cooling the extending plate; and

[0009] A control device for real-time obtaining of the temperature data and controlling the start or stop of the cooling component according to different temperature data, so as to achieve different heat dissipation modes of the photovoltaic panel at different temperatures. The temperature sensor and the cooling component are both connected to the control device.

[0010] The further improvement of the heat dissipation system for the photovoltaic panel of the present invention is that the cooling component includes a blower, and the extending plate is blown by the blower to achieve cooling of the extending plate.

[0011] A further improvement of the heat dissipation system of the photovoltaic panel of the present invention lies in that the cooling component further includes an atomization device, and the liquid is atomized by the atomization device and then adheres to the extension plate, so as to cool the extension plate after the liquid evaporates.

[0012] A further improvement of the heat dissipation system of the photovoltaic panel of the present invention lies in that the atomization device includes a water storage tank, a water pump and an atomizing nozzle. The water pump is connected between the water storage tank and the atomizing nozzle, and is used to transport the liquid in the water storage tank to the atomizing nozzle and atomize the liquid through the atomizing nozzle. The atomizing nozzle is fixed on one side of the fan facing the extension plate, so as to blow the atomized liquid onto the extension plate when the fan blows air to the extension plate.

[0013] A further improvement of the heat dissipation system of the photovoltaic panel of the present invention lies in that a thermal conductive silicone grease is connected between the heat conducting plate and the connecting plate.

[0014] A further improvement of the heat dissipation system of the photovoltaic panel of the present invention lies in that the heat dissipation member further includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins are arranged on the extension plate along the height direction of the extension plate.

[0015] A control method for the heat dissipation system of a photovoltaic panel includes the following steps:

[0016] Provide the heat dissipation system as described in claim 1;

[0017] Detect the temperature of the connecting plate through the temperature sensor to obtain temperature data and feedback it to the control device;

[0018] When the temperature data obtained by the control device does not exceed the set temperature value, control the cooling component to stop;

[0019] When the temperature data obtained by the control device exceeds the set temperature value, control the cooling component to start.

[0020] A further improvement of the control method for the heat dissipation system of the photovoltaic panel of the present invention lies in that the cooling component includes a fan and an atomization device, and the set temperature value includes a first temperature value and a second temperature value;

[0021] When the temperature data obtained by the control device exceeds the first temperature value but does not exceed the second temperature value, control the fan to start and control the atomization device to stop;

[0022] When the temperature data obtained by the control device exceeds the second temperature value, control the fan to start and control the atomization device to start.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] In the present invention, the heat generated by the photovoltaic panel is transferred to the connecting plate and the extension plate through the heat conducting plate. The connecting plate and the extension plate are exposed to the air for natural heat dissipation and cooling. By starting the fan to blow towards the extension plate, the heat dissipation can be accelerated. Then, in cooperation with starting the atomizing device to blow the atomized liquid onto the extension plate when the fan blows on the extension plate, the heat of the extension plate can be taken away by the evaporation of the liquid. In cooperation with the fan, the evaporation of the liquid can be accelerated, greatly improving the heat dissipation efficiency. This application can perform heat dissipation in different modes according to different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Shows a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 Shows a schematic diagram of the installation position of the heat conducting plate of the present invention.

[0027] In the figure: 1, photovoltaic panel; 2, heat conducting plate; 3, connecting plate; 4, extension plate; 5, heat dissipation fins; 6, temperature sensor; 7, fan; 8, atomizing nozzle; 9, water pump; 10, water storage tank; 11, control device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to solve the problem that the increase in the temperature of the photovoltaic panel affects the power generation efficiency, the present invention provides a heat dissipation system for a photovoltaic panel and its control method. The following further describes the heat dissipation system for a photovoltaic panel and its control method with specific embodiments in conjunction with the drawings.

[0029] Refer to Figure 1-2 As shown, a heat dissipation system for a photovoltaic panel includes:

[0030] A heat conducting plate 2 fixed to the back of the photovoltaic panel 1;

[0031] A plurality of heat dissipation components disposed on the side of the heat conducting plate 2 away from the photovoltaic panel 1. Each heat dissipation component includes a connecting plate 3 fixed to the heat conducting plate 2 and an extension plate 4 fixedly connected to the connecting plate 3 and in a suspended state, so as to transfer the heat to the extension plate 4 through the heat conducting plate 2 and the connecting plate 3 for heat dissipation when the photovoltaic panel 1 generates heat;

[0032] A temperature sensor 6 fixed to the connecting plate 3, used to detect the temperature of the connecting plate 3 to obtain temperature data;

[0033] A cooling component for cooling the extension plate 4; and

[0034] A control device 11 for obtaining the temperature data in real time and controlling the start or stop of the cooling component according to different temperature data, so as to realize different heat dissipation modes of the photovoltaic panel 1 at different temperatures. The temperature sensor 6 and the cooling component are both connected to the control device 11.

[0035] Further, in this embodiment, the temperature sensor 6 can be a patch type temperature sensor, which is fixed on one of the plurality of connecting plates 3; the control device 11 can be an industrial control host, which has functions such as monitoring and data acquisition, control and execution tasks, data processing and distribution, and communication;

[0036] The heat generated by the photovoltaic panel 1 is transferred to the connecting plate 3 and the extension plate 4 through the heat conducting plate 2. The connecting plate 3 and the extension plate 4 are exposed to the air for natural heat dissipation and cooling. By controlling the cooling component to cool the extension plate 4, the heat dissipation efficiency can be greatly improved to avoid the influence of the increase in the temperature of the photovoltaic panel 1 on the power generation efficiency of the photovoltaic panel 1.

[0037] Among them, the cooling component includes a fan 7, and the extension plate 4 is blown by the fan 7 to achieve cooling of the extension plate 4.

[0038] Further, in this embodiment, the fan 7 can be an axial flow fan;

[0039] By adopting the above design, the extension plate 4 is blown by the fan 7, and the flowing air can take away the temperature on the extension plate 4 to achieve a cooling effect.

[0040] Among them, the cooling component further includes an atomization device, and the liquid is atomized by the atomization device and then attached to the extension plate 4 to achieve cooling of the extension plate 4 after the liquid evaporates;

[0041] The atomization device includes a water storage tank 10, a water pump 9 and an atomizing nozzle 8. The water pump 9 is connected between the water storage tank 10 and the atomizing nozzle 8, and is used to transport the liquid in the water storage tank 10 to the atomizing nozzle 8 and atomize the liquid through the atomizing nozzle 8. The atomizing nozzle 8 is fixed on the side of the fan 7 facing the extension plate 4, so as to blow the atomized liquid onto the extension plate 4 when the fan 7 blows the extension plate 4.

[0042] Further, in this embodiment, the liquid can be water; the water pump 9 is connected to the water storage tank 10 and the atomizing nozzle 8 through water pipes;

[0043] The water in the water storage tank 10 can be pumped out by the water pump 9 and transported to the atomizing nozzle 8, and then the water is atomized by the atomizing nozzle 8. The atomized water droplets are blown onto the extension plate 4 by the fan 7. The heat on the extension plate 4 can be taken away by the evaporation of the water droplets, so as to achieve cooling. And with the continuous blowing of the fan 7, the flowing air can not only cool the extension plate 4, but also accelerate the evaporation of the water droplets, thus greatly improving the cooling rate.

[0044] Among them, there is thermal conductive silicone grease between the heat conducting plate 2 and the connecting plate 3.

[0045] Further, in this embodiment, the heat conducting plate 2 is made of a metal material, which has a high heat transfer coefficient and a certain strength, such as materials like copper, aluminum, and silver;

[0046] By adopting the above design, the use of thermal grease can reduce the contact thermal resistance, improve the heat transfer between the heat conducting plate 2 and the connection plate 3, and ensure that heat can be transferred to the connection plate 3 in real time.

[0047] Among them, the heat dissipation member further includes a plurality of heat dissipation fins 5, and the plurality of heat dissipation fins 5 are arranged on the extension plate 4 along the height direction of the extension plate 4.

[0048] By adopting the above design, a plurality of heat dissipation fins 5 are provided on each extension plate 4, which can increase the heat transfer area of the extension plate 4, thereby improving the heat dissipation efficiency.

[0049] A control method for a heat dissipation system of a photovoltaic panel includes the following steps:

[0050] Provide the heat dissipation system as described above;

[0051] Detect the temperature of the connection plate 3 through the temperature sensor 6 to obtain temperature data and feedback it to the control device 11;

[0052] When the temperature data obtained by the control device 11 does not exceed the set temperature value, control the cooling component to stop;

[0053] When the temperature data obtained by the control device 11 exceeds the set temperature value, control the cooling component to start.

[0054] Among them, the cooling component includes a fan 7 and an atomizing device, and the set temperature value includes a first temperature value and a second temperature value;

[0055] When the temperature data obtained by the control device 11 exceeds the first temperature value but does not exceed the second temperature value, control the fan 7 to start and control the atomizing device to stop;

[0056] When the temperature data obtained by the control device 11 exceeds the second temperature value, control the fan 7 to start and control the atomizing device to start.

[0057] Specifically, in this embodiment, the first temperature value is 35 °C and the second temperature value is 45 °C;

[0058] When the temperature data obtained by the control device 11 ≤ 35 °C, control the fan 7 and the atomizing device to stop, and the heat dissipation member dissipates heat by natural cooling;

[0059] When the temperature data obtained by the control device 11 is greater than 35 °C and less than 45 °C, control the fan 7 to start and control the atomizing device to stop, and only cool the heat dissipation member through the fan 7;

[0060] When the temperature data obtained by the control device 11 is greater than 45 °C, the control device starts the fan 7 and the atomization device, and performs double cooling through the fan 7 and the atomization device.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0062] The present invention has been described in detail above in conjunction with the embodiments with reference to the drawings. Those of ordinary skill in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope of the appended claims.

Claims

1. A heat dissipation system for a photovoltaic panel, characterized in that, Comprising: A heat conducting plate fixed to the back of the photovoltaic panel; A plurality of heat dissipation members disposed on the side of the heat conducting plate away from the photovoltaic panel. Each of the heat dissipation members includes a connecting plate fixed to the heat conducting plate and an extension plate fixedly connected to the connecting plate and in a suspended state, so as to transfer heat to the extension plate through the heat conducting plate and the connecting plate for heat dissipation when the photovoltaic panel generates heat; A temperature sensor fixed to the connecting plate, for detecting the temperature of the connecting plate to obtain temperature data; A temperature reduction component for cooling the extension plate; And A control device for acquiring the temperature data in real time and controlling the start or stop of the temperature reduction component according to different temperature data, so as to realize different heat dissipation modes of the photovoltaic panel at different temperatures. The temperature sensor and the temperature reduction component are both connected to the control device.

2. The heat dissipation system of the photovoltaic panel according to claim 1, characterized in that, The temperature reduction component includes a blower, and the extension plate is blown by the blower to realize cooling of the extension plate.

3. The heat dissipation system of the photovoltaic panel according to claim 2, characterized in that, The temperature reduction component further includes an atomization device, and the liquid is atomized by the atomization device and attached to the extension plate, so as to realize cooling of the extension plate after the liquid evaporates.

4. The heat dissipation system of the photovoltaic panel according to claim 3, characterized in that The atomization device includes a water storage tank, a water pump and an atomizing nozzle. The water pump is connected between the water storage tank and the atomizing nozzle, and is used for conveying the liquid in the water storage tank to the atomizing nozzle and atomizing the liquid through the atomizing nozzle. The atomizing nozzle is fixed on the side of the blower facing the extension plate, so as to blow the atomized liquid onto the extension plate when the blower blows the extension plate.

5. The heat dissipation system of the photovoltaic panel according to claim 1, characterized in that, There is a heat conducting silicone grease connected between the heat conducting plate and the connecting plate.

6. The heat dissipation system of the photovoltaic panel according to claim 1, characterized in that, The heat dissipation member further includes a plurality of heat dissipation fins, and the plurality of heat dissipation fins are disposed on the extension plate along the height direction of the extension plate.

7. A control method for a heat dissipation system of a photovoltaic panel, characterized in that, Including the following steps: Providing the heat dissipation system as described in claim 1; Detecting the temperature of the connecting plate through the temperature sensor to obtain temperature data and feedbacking it to the control device; When the temperature data acquired by the control device does not exceed the set temperature value, controlling the temperature reduction component to stop; When the temperature data acquired by the control device exceeds the set temperature value, controlling the temperature reduction component to start.

8. The control method of the heat dissipation system of the photovoltaic panel according to claim 7, characterized in that, The temperature reduction component includes a blower and an atomization device, and the set temperature value includes a first temperature value and a second temperature value; When the temperature data acquired by the control device exceeds the first temperature value but does not exceed the second temperature value, controlling the blower to start and controlling the atomization device to stop; When the temperature data acquired by the control device exceeds the second temperature value, controlling the blower to start and controlling the atomization device to start.

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