Photovoltaic module heat dissipation backsheet

Abstract

The utility model provides a photovoltaic module heat dissipation backboard relates to photovoltaic backboard technical field, including the installation frame of setting on photovoltaic board ontology, the mounting plate of being detachably installed in the installation frame end portion and with photovoltaic board ontology between forming heat conduction space and the heat dissipation mechanism of being worn in heat conduction space and carrying out heat dissipation to photovoltaic board ontology, the two heat dissipation ports that are symmetrically set up on the installation frame with heat conduction space through, the heat dissipation mechanism includes setting in heat conduction space and the heat conduction component of leading out photovoltaic board ontology heat and control component, and the control component of controlling airflow through two heat dissipation ports and accelerating into or flowing out heat conduction space, two control components control airflow through two heat dissipation port's direction is opposite. The utility model strengthens the heat dissipation effect of photovoltaic module through control airflow direction and flow rate, improved the heat dissipation efficiency of photovoltaic module.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic backsheet technology, specifically a photovoltaic module heat dissipation backsheet. Background Technology

[0002] In practical applications of photovoltaic (PV) modules, a significant amount of heat is generated when PV panels generate electricity under sunlight. Crystalline silicon cells exhibit a negative temperature coefficient of efficiency; excessively high temperatures not only lead to a significant decrease in the power generation efficiency of PV modules but also accelerate the aging of encapsulation materials, severely impacting the module's lifespan and making it difficult to achieve the designed 25-year lifespan. Therefore, heat dissipation is one of the key factors restricting the improvement of PV module performance.

[0003] To address this heat dissipation challenge, various technical solutions related to heat dissipation backsheets for photovoltaic modules have emerged in the industry. Specific publicly disclosed patents and their inherent drawbacks are as follows:

[0004] 1. A heat dissipation backsheet for photovoltaic modules (Patent No. CN105140327B): This patent adopts a three-layer structure consisting of a metal thermally conductive layer, an insulating adhesive layer, and a weather-resistant layer. By adding alkali-free glass fiber powder to the insulating adhesive layer, the interfacial thermal resistance is reduced, improving the problem of poor heat dissipation of traditional resin backsheets. However, this solution relies solely on the thermal conductivity of the material itself to dissipate heat, without setting up an active airflow guiding structure. Heat dissipation depends entirely on natural thermal convection, resulting in low heat dissipation efficiency. Under harsh conditions of high temperature and strong sunlight, it is difficult to quickly dissipate the large amount of heat accumulated in the photovoltaic panel.

[0005] 2. Photovoltaic module heat dissipation backsheet and photovoltaic module (Patent No. CN202420682294.X): This patent achieves heat dissipation by transferring heat from the photovoltaic panel to the heat sink through an aluminum foil layer, which also has thermal conductivity and water-blocking functions. However, its heat dissipation process relies on passive heat exchange between the heat sink and the air. The heat dissipation effect of the heat sink is easily affected by external wind speed, ambient temperature and other natural conditions. Furthermore, the heat dissipation channel is not optimized, resulting in slow airflow and an inability to achieve rapid heat dissipation.

[0006] 3. A high-efficiency heat dissipation structure for monocrystalline photovoltaic modules (patent number CN222692240U): This patent involves attaching a copper plate to the outside of the monocrystalline photovoltaic module body, with thermally conductive protrusions fixed to the outside of the copper plate and a nickel-plated layer to improve heat conduction. However, this structure only assists heat dissipation by increasing the thermally conductive area and lacks an active airflow control mechanism. Heat tends to accumulate in the area between the copper plate and the thermally conductive protrusions, failing to form a directional and efficient heat dissipation airflow, resulting in a limited heat dissipation rate and making it difficult to meet the heat dissipation requirements of high-power photovoltaic modules.

[0007] 4. A photovoltaic panel cooling structure (patent number CN222339358U): This patent uses a combination of finned heat sinks, cooling water circulators and cooling fans to achieve heat dissipation. Although it introduces an active heat dissipation method, the structure is complex and relies on the cooling water circulation system, which not only increases the overall weight of the photovoltaic module and the difficulty of installation, but also poses a risk of water pipe leakage. At the same time, the cooling fan simply blows air into the vents without optimizing the airflow channel, resulting in low airflow utilization and difficulty in balancing heat dissipation energy consumption and heat dissipation effect.

[0008] In summary, existing patented solutions mostly rely on material thermal conductivity or simple passive or crude active heat dissipation methods, generally lacking precise control and channel optimization of heat dissipation airflow. This results in unstable heat dissipation efficiency, high susceptibility to external influences, and an inability to efficiently adapt to the heat dissipation requirements of photovoltaic modules under different operating conditions. Therefore, there is an urgent need for a photovoltaic module heat dissipation backsheet that can enhance heat dissipation by controlling airflow direction and velocity, solving the problems of disordered airflow and insufficient heat dissipation efficiency in existing technologies. Utility Model Content

[0009] To address the above problems, this utility model provides a heat dissipation backplate for photovoltaic modules.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a photovoltaic module heat dissipation backplate, comprising a mounting frame sleeved on the photovoltaic panel body, a mounting plate detachably mounted on the end of the mounting frame and forming a heat conduction space between it and the photovoltaic panel body, and a heat dissipation mechanism passing through the heat conduction space to dissipate heat from the photovoltaic panel body. Two heat dissipation ports symmetrically opened on the mounting frame and communicating with the heat conduction space are provided. The heat dissipation mechanism includes a heat conduction component disposed in the heat conduction space and dissipating heat from the photovoltaic panel body, and a control component controlling the airflow to accelerate into or out of the heat conduction space through the two heat dissipation ports. The two control components control the airflow through the two heat dissipation ports in opposite directions.

[0011] Preferably, the control component includes a heat dissipation strip detachably installed at the opening of the heat dissipation vent, an adjustment plate rotatably inserted into the through-hole along the length of the heat dissipation strip, and a sealing plate slidably inserted into the openings of the two through-holes along the vertical direction. The top of the opposite sides of the two sealing plates are rotatably connected to the side of the adjustment plate, and an acceleration channel is formed between the top side of the adjustment plate and the through-hole. The opening at one end of the acceleration channel is larger than the opening at the other end. The middle part of the adjustment plate is rotatably inserted into the through-hole through a rotating rod, and the length of the rotating rod is parallel to the length of the heat dissipation strip. The adjustment plate and the heat dissipation strip have through-holes that communicate with the heat dissipation vent.

[0012] Preferably, the control component further includes a drive unit disposed on the heat sink and controlling the rotating rod to rotate. The drive unit controls the two rotating rods to rotate synchronously in the same direction, and controls the opening at one end of the two acceleration channels to be larger than the opening at the other end.

[0013] Preferably, the rotating plate has expansion grooves on both sides near the two sealing plates, and expansion plates are slidably sealed through the two expansion grooves. The opposite sides of the two expansion plates are rotatably connected to the top of the opposite end faces of the two sealing plates.

[0014] Preferably, the sealing plate has a limit groove on each of its opposite end faces along the vertical direction, and a limit block installed on the through opening is slidably inserted in the limit groove.

[0015] Preferably, the heat-conducting component includes a heat-conducting plate that passes through the mounting frame and is located in the heat-conducting space, and a plurality of heat dissipation columns that are installed on the end face of the heat-conducting plate away from the photovoltaic panel body, with one end face of the heat-conducting plate attached to the back of the photovoltaic panel body.

[0016] The beneficial effects of this utility model are:

[0017] 1. The control component forms an acceleration channel with a large opening at one end and a small opening at the other through the adjustment plate and sealing plate. The airflow directions at the two heat dissipation vents are opposite, guiding the airflow to accelerate into the heat conduction space and quickly carry heat out. Combined with the heat conduction plate and heat dissipation column, this rapidly removes heat from the photovoltaic panel, forming a highly efficient heat dissipation link of "heat conduction-accelerated airflow." Compared to traditional passive heat dissipation patented solutions, this significantly improves the heat removal rate and effectively reduces the operating temperature of the photovoltaic panel.

[0018] 2. By controlling the synchronous and unidirectional rotation of the two rotating rods through the drive component, the opening shape of the two acceleration channels can be stably controlled, avoiding the problem of unstable airflow in natural heat dissipation. At the same time, the cooperation between the sealing plate and the limiting block ensures the airflow channel is sealed, reduces airflow leakage, and makes the heat dissipation effect unaffected by external wind speed, wind direction and other natural conditions, adapting to the usage needs of different environments.

[0019] 3. This heat dissipation backplate is fitted onto the photovoltaic panel body via a mounting frame. The detachable mounting plate design allows it to adapt to photovoltaic panels of different specifications. Its modular heat dissipation mechanism can be flexibly integrated into various photovoltaic modules. Whether it is a small residential photovoltaic panel or an industrial-grade high-power photovoltaic module, this structure can achieve efficient heat dissipation, and its applicability far exceeds that of existing heat dissipation patent solutions that rely on specific materials or fixed structures. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a simplified structural diagram of the photovoltaic module heat dissipation backplate proposed in this utility model.

[0022] Figure 2This is a schematic diagram of the unfolded structure of the heat dissipation backplate of the photovoltaic module proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the control component structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the cross-sectional state structure of the control component of this utility model.

[0025] In the diagram: 1. Photovoltaic panel body; 2. Mounting frame; 3. Heat dissipation strip; 4. Heat dissipation port; 5. Heat conduction plate; 6. Heat dissipation column; 7. Mounting plate; 8. Through opening; 9. Sealing plate; 10. Limiting groove; 11. Rotating rod; 12. Rotating plate; 13. Telescopic groove; 14. Telescopic plate. Detailed Implementation

[0026] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the embodiments without creative effort are all within the protection scope of this utility model.

[0027] Example 1: Reference Figures 1-4 The photovoltaic module heat dissipation backplate shown includes a mounting frame 2 sleeved on the photovoltaic panel body 1, a mounting plate 7 detachably mounted on the end of the mounting frame 2 and forming a heat conduction space between it and the photovoltaic panel body 1, and a heat dissipation mechanism that passes through the heat conduction space to dissipate heat from the photovoltaic panel body 1. Two heat dissipation ports 4 symmetrically opened on the mounting frame 2 and communicating with the heat conduction space are provided. The heat dissipation mechanism includes a heat conduction component disposed in the heat conduction space and dissipating heat from the photovoltaic panel body 1, and a control component that controls the airflow to accelerate into or out of the heat conduction space through the two heat dissipation ports 4. The two control components control the airflow through the two heat dissipation ports 4 in opposite directions.

[0028] In this embodiment, the mounting frame 2 is fitted onto the photovoltaic panel body 1, and the heat-conducting component is installed within the heat-conducting space, ensuring it is in close contact with the photovoltaic panel body 1. The mounting plate 7 is then detachably installed at the end of the mounting frame 2, forming a sealed heat-conducting space between the mounting plate 7 and the photovoltaic panel body 1. Simultaneously, the two symmetrically opened heat dissipation vents 4 on the mounting frame 2 are ensured to be connected to the heat-conducting space. The control component is installed at the heat dissipation vents 4 to achieve airflow control. When the photovoltaic panel body 1 generates heat during operation, the heat-conducting component quickly conducts the heat from the photovoltaic panel body 1 and dissipates it into the heat-conducting space. At this time, the control component is activated, controlling the airflow direction at the two heat dissipation vents 4 to be opposite, one... One heat dissipation vent 4 accelerates the intake of cold outside air into the heat conduction space, while the other heat dissipation vent 4 accelerates the exhaust of hot air that has absorbed heat within the heat conduction space, forming a directional airflow circulation. The control component maintains the reverse airflow acceleration state of the two heat dissipation vents 4, allowing cold air to continuously enter the heat conduction space, exchange heat, and then be quickly exhausted. Through the synergistic effect of the heat conduction component and the accelerated airflow circulation, the temperature of the photovoltaic panel body 1 is continuously reduced, ensuring its stable operation. When the photovoltaic panel body 1 stops operating or its temperature drops to a suitable range, the control component stops working, and the airflow circulation terminates. If maintenance is required, the mounting plate 7 can be removed to inspect the heat conduction component or the control component. The mounting frame 2 and mounting plate 7 construct a sealed heat conduction space. The heat conduction component removes heat from the photovoltaic panel body 1, and the control component controls the two heat dissipation vents 4 to accelerate the airflow in opposite directions, forming an efficient airflow circulation that quickly removes heat from the heat conduction space, achieving efficient heat dissipation of the photovoltaic panel body 1, ensuring the operational stability of the photovoltaic panel body 1, and improving power generation efficiency.

[0029] This embodiment addresses the control component's ability to rapidly control airflow into or out of the heat-conducting space. The following solution is provided:

[0030] like Figure 3 and Figure 4 As shown, the control assembly includes a heat dissipation strip 3 detachably mounted on the opening of the heat dissipation vent 4, an adjustment plate rotatably inserted into the through-hole 8 along the length of the heat dissipation strip 3, and a sealing plate 9 vertically slidably inserted into the openings of the two through-holes 8. The top of the opposite sides of the two sealing plates 9 are rotatably connected to the side of the adjustment plate, and an acceleration channel is formed between the top side of the adjustment plate and the through-hole 8. The opening at one end of the acceleration channel is larger than the opening at the other end. The middle part of the adjustment plate is rotatably inserted into the through-hole 8 via a rotating rod 11, and the length of the rotating rod 11 is parallel to the length of the heat dissipation strip 3. The adjustment plate and the heat dissipation strip 3 have through-holes 8 that communicate with the heat dissipation vent 4. The control assembly also includes a drive unit mounted on the heat dissipation strip 3 and controlling the rotation of the rotating rod 11. The drive unit controls the two rotating rods 11 to rotate synchronously and in the same direction, controlling the opening at one end of the two acceleration channels to be larger than the opening at the other end.

[0031] In this embodiment, the driving component starts and controls the two rotating rods 11 to rotate synchronously and in the same direction. The rotating rods 11 drive the adjusting plate to rotate around its axis. When the adjusting plate rotates, it pulls the sealing plates 9 on both sides to slide vertically, so that an acceleration channel with a large opening at one end and a small opening at the other end is formed between the top side of the adjusting plate and the through-hole 8. The acceleration channels at the two heat dissipation ports 4 keep the opening at one end larger than the opening at the other end. The acceleration channels use the difference in opening size to guide the airflow in a directional direction. The acceleration channel of one heat dissipation port 4 draws in cold air from the outside through the large opening end and accelerates its introduction into the heat conduction space. The acceleration channel of the other heat dissipation port 4 accelerates the exhaust of hot air in the heat conduction space through the large opening end, realizing the reverse acceleration airflow circulation. After the heat dissipation is completed, the driving component drives the rotating rods 11 to rotate in the opposite direction, the adjusting plate resets and pushes the sealing plate 9 back to the initial position, and the acceleration channel returns to its initial state. If maintenance is required, the heat dissipation strip 3 can be removed to inspect the adjusting plate, sealing plate 9 or driving component. The rotating rod 11 is controlled by the drive component to drive the adjustment plate to rotate, which, together with the sealing plate 9, forms an acceleration channel with differentiated openings. The two channels maintain the same direction of differentiated openings, realizing the directional acceleration of airflow introduction and export, enhancing the airflow circulation efficiency in the heat conduction space, and improving the heat dissipation effect of the photovoltaic panel body 1.

[0032] In this embodiment, when the airflow passes through the variable cross-section channel of the through-port 8 ("large opening → narrow channel → large opening"), according to the Venturi effect in fluid mechanics, the airflow velocity will significantly increase at the narrow channel, while the static pressure will decrease. In this scheme, the acceleration channel formed by the adjustment plate and the through-port 8 ("one end large opening, one end small opening") is essentially a locally narrow channel structure—the end with the large opening is the airflow inlet / outlet, and the end with the small opening is the middle contraction section (narrow channel). The rotation angle of the rotating rod 11 is adjusted by the driving component to change the narrow channel contraction ratio of the acceleration channel for heat dissipation under different loads on the photovoltaic panel body 1. When the photovoltaic panel load is high and the heat generation is high, the contraction ratio is increased (the difference in opening size is more obvious), further increasing the airflow velocity and enhancing heat dissipation; when the photovoltaic panel load is low and the temperature is suitable, the contraction ratio is decreased to reduce the airflow velocity and balance heat dissipation efficiency and energy consumption. Compared with a fixed cross-section channel, it can be dynamically adapted according to the actual heat generation situation, avoiding the problems of "insufficient heat dissipation" or "excessive heat dissipation and energy consumption".

[0033] The driving component can be a motor that controls the rotation of the rotating rod 11.

[0034] like Figure 4 A, Figure 4 B Figure 4 C sequentially shows the control component in its initial state, the control component controlling the left opening of the through-port 8 to be smaller than the right opening, and the control component controlling the right opening of the through-port 8 to be smaller than the left opening.

[0035] Example 2: Regarding how to control the two sealing plates 9 to slide up and down synchronously when the rotating plate 12 rotates, this example provides the following solution.

[0036] like Figure 3 and Figure 4 As shown, the rotating plate 12 has telescopic grooves 13 on both sides near the two sealing plates 9, and telescopic plates 14 are slidably sealed through the two telescopic grooves 13. The opposite sides of the two telescopic plates 14 are rotatably connected to the top of the opposite end faces of the two sealing plates 9.

[0037] In this embodiment, when the driving component drives the rotating rod 11 to rotate, the rotating plate 12 connected to the rotating rod 11 rotates synchronously. The telescopic grooves 13 on both sides of the rotating plate 12 shift at an angle as the rotating plate 12 rotates. The telescopic plate 14, which slides and seals through the telescopic groove 13, is limited by the sealing plate 9 and slides along the telescopic groove 13. At the same time, the opposite side of the telescopic plate 14 maintains a rotational connection with the top of the opposite end face of the sealing plate 9. The telescopic plate 14 adapts to the relative position change between the rotating plate 12 and the sealing plate 9 through telescopic sliding, ensuring that the rotating plate 12 rotates... During operation, the sealing plate 9 remains in close contact with the telescopic plate 14 to prevent airflow leakage from the gap between the rotating plate 12 and the sealing plate 9. The telescopic sliding of the telescopic plate 14, in conjunction with the vertical sliding of the sealing plate 9, maintains the integrity and sealing of the acceleration channel between the adjusting plate and the through-hole 8, ensuring the stability of the differentiated structure of the acceleration channel with a large opening at one end and a small opening at the other, thus ensuring the directional acceleration effect of airflow. After heat dissipation, the rotating plate 12 rotates in the opposite direction to reset, and the telescopic plate 14 extends and retracts along the telescopic groove 13 to return to its initial position, causing the sealing plate 9 to reset synchronously. Through the sliding sealing cooperation between the telescopic groove 13 and the telescopic plate 14, the relative movement of the rotating plate 12 and the sealing plate 9 is adapted, ensuring the sealing and structural stability of the acceleration channel, preventing airflow leakage, further enhancing the directional acceleration effect of airflow, and improving the heat dissipation efficiency of the photovoltaic panel body 1.

[0038] Regarding the issue of the sealing plate 9 sliding vertically at the opening position of the through-hole 8, this embodiment provides the following solution:

[0039] like Figure 3 As shown, the sealing plate 9 has a limit groove 10 on each of its opposite end faces along the vertical direction, and a limit block installed on the opening of the through port 8 is slidably inserted in the limit groove 10.

[0040] In this embodiment, the sliding cooperation between the limiting groove 10 and the limiting block enables precise limiting and directional guidance of the vertical sliding of the sealing plate 9, preventing the sealing plate 9 from shifting or tilting, ensuring the structural integrity and sealing of the acceleration channel, preventing airflow leakage, ensuring stable airflow directional acceleration effect, and improving the heat dissipation reliability and efficiency of the photovoltaic panel body 1.

[0041] It is understandable that heat conduction to the photovoltaic panel body 1 can be achieved in various ways. This embodiment provides the following solution:

[0042] like Figure 1 and Figure 2 As shown, the heat-conducting component includes a heat-conducting plate 5 that passes through the mounting frame 2 and is located in the heat-conducting space, and multiple heat dissipation columns 6 that are installed on the end face of the heat-conducting plate 5 away from the photovoltaic panel body 1. The end face of the heat-conducting plate 5 is attached to the back of the photovoltaic panel body 1.

[0043] In this embodiment, the heat is dissipated by the heat-conducting plate 5 closely attached to the photovoltaic panel body 1, and the heat is dissipated by the high-efficiency heat-conducting plate 5. Multiple heat dissipation columns 6 expand the heat dissipation area, improve the heat exchange efficiency with the accelerated airflow, provide stable and efficient heat conduction and heat dissipation for the photovoltaic panel body 1, further enhance the overall heat dissipation effect, and ensure the stable operation of the photovoltaic panel body 1 at low temperatures.

[0044] In this embodiment, the heat-conducting plate 5 and the heat dissipation column 6 are preferably made of 6063 aluminum alloy or 304 stainless steel. Copper plates can be used in high-frequency and high-load scenarios.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation backplate for a photovoltaic module, comprising a mounting frame (2) sleeved on a photovoltaic panel body (1), a mounting plate (7) detachably mounted at the end of the mounting frame (2) and forming a heat-conducting space between the mounting plate (7) and the photovoltaic panel body (1), and a heat dissipation mechanism passing through the heat-conducting space to dissipate heat from the photovoltaic panel body (1), characterized in that, The mounting frame (2) has two symmetrical heat dissipation ports (4) that communicate with the heat conduction space. The heat dissipation mechanism includes a heat conduction component that is set in the heat conduction space and dissipates the heat of the photovoltaic panel body (1), and a control component that controls the airflow to accelerate into or out of the heat conduction space through the two heat dissipation ports (4). The two control components control the airflow through the two heat dissipation ports (4) in opposite directions.

2. The photovoltaic module heat dissipation backplate according to claim 1, characterized in that: The control components include a heat sink (3) that can be detachably installed at the opening of the heat sink (4), an adjustment plate that rotates through the through-hole (8) along the length of the heat sink (3), and a sealing plate (9) that slides vertically through the openings of the two through-holes (8). The top of the opposite sides of the two sealing plates (9) are rotatably connected to the side of the adjustment plate, and an acceleration channel is formed between the top side of the adjustment plate and the through-hole (8). The opening at one end of the acceleration channel is larger than the opening at the other end. The middle part of the adjustment plate is rotated through the through-hole (8) by a rotating rod (11), and the length of the rotating rod (11) is square and parallel to the length of the heat sink (3). The adjustment plate and the heat sink (3) are provided with through-holes (8) that communicate with the heat sink (4).

3. The photovoltaic module heat dissipation backplate according to claim 2, characterized in that: The control component also includes a drive unit set on the heat sink (3) and controlling the rotating rod (11) to rotate. The drive unit controls the two rotating rods (11) to rotate synchronously and in the same direction, and controls the opening of the same end of the two acceleration channels to be larger than the opening of the other end.

4. The photovoltaic module heat dissipation backplate according to claim 2, characterized in that: The rotating plate (12) has expansion grooves (13) on both sides near the two sealing plates (9), and expansion plates (14) are slidably sealed inside the two expansion grooves (13). The two expansion plates (14) are rotatably connected to the top of the opposite end faces of the two sealing plates (9) on opposite sides.

5. The photovoltaic module heat dissipation backplate according to claim 4, characterized in that: The sealing plate (9) has a limit groove (10) on each end face along the vertical direction, and a limit block installed on the opening of the through port (8) slides through the limit groove (10).

6. The photovoltaic module heat dissipation backsheet according to any one of claims 1 to 5, characterized in that: The heat-conducting component includes a heat-conducting plate (5) that passes through the mounting frame (2) and is located in the heat-conducting space, and multiple heat dissipation columns (6) that are installed on the end face of the heat-conducting plate (5) away from the photovoltaic panel body (1). The end face of the heat-conducting plate (5) is attached to the back of the photovoltaic panel body (1).

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