Photovoltaic panel temperature control device

Abstract

The utility model discloses a photovoltaic panel temperature control device which comprises a photovoltaic panel, the photovoltaic panel is embedded in a frame, two sides of the frame are respectively provided with a protection plate and a heat dissipation plate, the protection plate is fixed on one side, facing the front side of the photovoltaic panel, of the frame, and the heat dissipation plate is fixed on one side, facing the back side of the photovoltaic panel, of the frame. The protection plate and the heat dissipation plate are matched to seal the frame, a cleaning unit is arranged on the side, facing the photovoltaic panel, of the protection plate, the cleaning unit is used for removing frost and snow on the protection plate, and a heat dissipation unit is arranged on the heat dissipation plate; according to the photovoltaic panel temperature control device, the heat dissipation unit and the heat dissipation plate are matched, water cooling heat dissipation is utilized, the temperature of the photovoltaic panel can be effectively controlled, the photovoltaic assembly can be kept in the most suitable power generation temperature range, the power generation efficiency of the photovoltaic assembly is improved, and frost and snow are prevented from being attached to the photovoltaic panel in cooperation with the protection plate. The cleaning unit heats the protection plate to remove frost and snow on the surface of the protection plate, and normal work of the photovoltaic module is guaranteed.

Description

Technical Field

[0001] The utility model relates to solar energy technology, in particular to a photovoltaic panel temperature control device. Background Art

[0002] Solar photovoltaic modules can convert sunlight into electrical energy; solar power generation has become one of the most important components of clean energy and renewable energy.

[0003] The working efficiency of photovoltaic modules is related to their temperature. The optimal power generation temperature of most photovoltaic modules is 20-25 degrees Celsius. When photovoltaic modules are working, they convert light energy into electrical energy. Due to the constraints of existing technology, their conversion efficiency is generally below 20%. Part of the remaining energy is absorbed as heat energy, and the other part is reflected back into the air, causing the modules to heat up and the temperature far exceeds the optimal power generation temperature, resulting in a decrease in the power generation efficiency of the photovoltaic modules. In addition, in frosty and snowy weather, frost or snow will form on the front of the photovoltaic modules, and the temperature will be lower than the optimal power generation temperature. Frost and snow will affect the light, causing the photovoltaic modules to fail to work normally.

[0004] The heat dissipation of photovoltaic modules in the prior art is mainly achieved through self-heating of the modules and the use of fans to provide convective air to assist in heat dissipation. However, the thermal conductivity of air and the back panel surface is very low, the heat dissipation effect is poor, and frost and snow cannot be removed, which affects the normal operation of the photovoltaic modules. Utility Model Content

[0005] In order to solve the defects of the above-mentioned prior art, the utility model provides a photovoltaic panel temperature control device, which can control the temperature of the photovoltaic panel so that the photovoltaic module can be maintained in the optimal power generation temperature range, and can remove frost and snow, improve the power generation efficiency of the photovoltaic module, and ensure the normal operation of the photovoltaic module.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a photovoltaic panel temperature control device, including a photovoltaic panel, wherein the photovoltaic panel is embedded in a frame, and a protective plate and a heat sink are respectively provided on both sides of the frame, the protective plate is fixed to the side of the frame facing the front of the photovoltaic panel, and the heat sink is fixed to the side of the frame facing the back of the photovoltaic panel, the protective plate and the heat sink cooperate with a sealing frame, a cleaning unit is provided on the side of the protective plate facing the photovoltaic panel, and the cleaning unit is used to remove frost and snow on the protective plate, and a heat sink is provided on the heat sink.

[0007] Preferably, the cleaning unit comprises a heating layer, the heating layer is bonded to the protective plate, the heating layer is a colorless transparent conductive film, and the protective plate is a colorless transparent glass plate.

[0008] Preferably, the heat dissipation plate is bonded to the back side of the photovoltaic panel.

[0009] Preferably, the heat dissipation unit includes a heat dissipation cover, which is fixed to the side of the heat dissipation plate away from the photovoltaic panel. The heat dissipation cover cooperates with the heat dissipation plate to form a heat dissipation cavity. A water inlet and a drain are respectively provided on both sides of the heat dissipation cover, and the water inlet and the drain are both connected to the heat dissipation cavity.

[0010] Preferably, a plurality of fins are evenly distributed in the heat dissipation cavity, the fins are fixed to the heat dissipation plate, and two ends of the fins face the water inlet and the drain outlet respectively.

[0011] Preferably, the water inlet is connected to a distributor, the distributor is located in the heat dissipation cavity, and the distributor has a plurality of spray holes evenly distributed on one side of the fin.

[0012] Preferably, temperature sensors are provided on both sides of the heat dissipation cavity and on the photovoltaic panel.

[0013] Preferably, a control component and a water pump are provided on the frame, and the control component is connected to the temperature sensor, the heating layer and the water pump.

[0014] In summary, the utility model has achieved the following technical effects:

[0015] The photovoltaic panel temperature control device of the utility model adopts a heat dissipation unit and a heat dissipation plate in combination, and utilizes water cooling to dissipate heat, which can effectively control the temperature of the photovoltaic panel, so that the photovoltaic module can be maintained in the optimal power generation temperature range, thereby improving the power generation efficiency of the photovoltaic module. In addition, the protective plate can be used to prevent frost and snow from adhering to the photovoltaic panel, and the frost and snow on the surface of the protective plate can be removed by heating the protective plate through the cleaning unit, thereby ensuring the normal operation of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the photovoltaic panel temperature control device of the utility model;

[0017] Figure 2 It is a cross-sectional view of the photovoltaic panel temperature control device of the utility model;

[0018] Explanation of the reference numerals in the specification: 1. Photovoltaic panel; 2. Frame; 3. Protective plate; 4. Heat sink; 5. Heat sink cover; 6. Fin; 7. Water inlet; 8. Distributor; 9. Drain outlet; 10. Temperature sensor; 11. Spray hole. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0022] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 or an electrical connection; 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 the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Embodiment 1:

[0026] like Figure 1As shown, a temperature control device for a photovoltaic panel 1 includes a photovoltaic panel 1, which is embedded in a frame 2. A protective plate 3 and a heat sink 4 are respectively provided on both sides of the frame 2. The protective plate 3 is fixed to the side of the frame 2 facing the front of the photovoltaic panel 1, and the heat sink 4 is fixed to the side of the frame 2 facing the back of the photovoltaic panel 1. The protective plate 3 and the heat sink 4 cooperate with the sealing frame 2. A cleaning unit is provided on the side of the protective plate 3 facing the photovoltaic panel 1, and the cleaning unit is used to remove frost and snow on the protective plate 3. A heat sink 4 is provided on the heat sink 4.

[0027] The temperature control device for the photovoltaic panel 1 of the present embodiment adopts a heat dissipation unit and a heat dissipation plate 4 in combination, and utilizes water cooling to dissipate heat, which can effectively control the temperature of the photovoltaic panel 1, so that the photovoltaic module can be maintained in the optimal power generation temperature range, thereby improving the power generation efficiency of the photovoltaic module. In addition, the protective plate 3 is cooperated to prevent frost and snow from adhering to the photovoltaic panel 1, and the protective plate 3 is heated by the cleaning unit to remove frost and snow on the surface of the protective plate 3, thereby ensuring the normal operation of the photovoltaic module.

[0028] The cleaning unit includes a heating layer, which is bonded to the protective plate 3. The heating layer is a colorless transparent conductive film, and the protective plate 3 is a colorless transparent glass plate. When the conductive film is energized, it generates heat to heat the protective plate 3 to melt the frost and snow.

[0029] The heat dissipation plate 4 is attached to the back of the photovoltaic panel 1 so that the heat of the photovoltaic panel 1 is directly transferred to the heat dissipation plate 4, thereby improving the heat dissipation efficiency.

[0030] The heat dissipation unit includes a heat dissipation cover 5, which is fixed to the side of the heat dissipation plate 4 away from the photovoltaic panel 1. The heat dissipation cover 5 and the heat dissipation plate 4 cooperate to form a heat dissipation cavity. A water inlet 7 and a drain outlet 9 are respectively provided on both sides of the heat dissipation cover 5, and the water inlet 7 and the drain outlet 9 are both connected to the heat dissipation cavity.

[0031] A number of fins 6 are evenly distributed in the heat dissipation cavity. The fins 6 are fixed to the heat dissipation plate 4, and the two ends of the fins 6 face the water inlet 7 and the water outlet 9 respectively; the fins 6 increase the contact area between the heat dissipation plate 4 and the water, thereby improving the heat dissipation efficiency.

[0032] The water inlet 7 is connected to a distributor 8 , which is located in the heat dissipation cavity. The distributor 8 has a plurality of spray holes 11 evenly distributed on one side of the fin 6 .

[0033] Temperature sensors 10 are provided on both sides of the heat dissipation cavity and on the photovoltaic panel 1 .

[0034] A control component and a water pump are provided on the frame 2, and the control component is connected to the temperature sensor 10, the heating layer and the water pump; wherein the water pump is connected to the water inlet.

[0035] Working principle: When encountering frosty or snowy weather, the operator controls the heating layer to energize and generate heat through the control component, and heats the protective plate 3 to remove frost and snow on the surface of the protective plate 3 to ensure the normal operation of the photovoltaic component; when performing normal power generation, the temperature sensor 10 monitors the temperature of the photovoltaic panel 1. When the temperature of the photovoltaic panel 1 exceeds the optimal power generation temperature range, the control component controls the water pump to pass water into the heat dissipation cavity, and absorbs the heat on the photovoltaic panel 1 through the heat dissipation plate 4, thereby cooling the photovoltaic panel 1 and keeping the photovoltaic panel 1 within the optimal power generation temperature range.

[0036] The above description is only a preferred implementation mode of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A photovoltaic panel temperature control device, characterized in that: It includes a photovoltaic panel, which is embedded in a frame. A protective plate and a heat sink are respectively provided on both sides of the frame. The protective plate is fixed to the side of the frame facing the front of the photovoltaic panel, and the heat sink is fixed to the side of the frame facing the back of the photovoltaic panel. The protective plate and the heat sink cooperate with a sealing frame. A cleaning unit is provided on the side of the protective plate facing the photovoltaic panel. The cleaning unit is used to remove frost and snow on the protective plate. A heat sink is provided on the heat sink.

2. A photovoltaic panel temperature control device according to claim 1, characterized in that: The cleaning unit comprises a heating layer, the heating layer is bonded to the protection plate, the heating layer is a colorless transparent conductive film, and the protection plate is a colorless transparent glass plate.

3. A photovoltaic panel temperature control device according to claim 1, characterized in that: The heat dissipation plate is attached to the back side of the photovoltaic panel.

4. A photovoltaic panel temperature control device according to claim 1, characterized in that: The heat dissipation unit includes a heat dissipation cover, which is fixed to the side of the heat dissipation plate away from the photovoltaic panel. The heat dissipation cover cooperates with the heat dissipation plate to form a heat dissipation cavity. A water inlet and a drain are respectively arranged on both sides of the heat dissipation cover, and the water inlet and the drain are both connected to the heat dissipation cavity.

5. A photovoltaic panel temperature control device according to claim 4, characterized in that: A plurality of fins are evenly distributed in the heat dissipation cavity, the fins are fixed to the heat dissipation plate, and two ends of the fins face the water inlet and the water outlet respectively.

6. A photovoltaic panel temperature control device according to claim 4, characterized in that: The water inlet is connected to a distributor, the distributor is located in the heat dissipation cavity, and the distributor has a plurality of spray holes evenly distributed on one side facing the fins.

7. A photovoltaic panel temperature control device according to claim 4, characterized in that: Temperature sensors are arranged on both sides of the heat dissipation cavity and on the photovoltaic panel.

8. A photovoltaic panel temperature control device according to claim 2 or 7, characterized in that: The frame is provided with a control component and a water pump, and the control component is connected with the temperature sensor, the heating layer and the water pump.

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