Photovoltaic module with heat dissipation function

Abstract

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module with a heat dissipation function, which comprises a photovoltaic module body, the edge of the photovoltaic module body is wrapped with a support frame, and the support frame is provided with a heat dissipation mechanism on the back of the photovoltaic module body. Through the mode that the heat dissipation mechanism is arranged on the back face of the photovoltaic module body, when the photovoltaic module body operates to generate heat, the contact area of the heat dissipation back plate and external air can be increased through heat dissipation rings in heat dissipation grooves in the heat dissipation back plate and the heat dissipation rings distributed in a corrugated shape, so that the heat dissipation efficiency is greatly improved; therefore, the problem of low power of the photovoltaic module body in a high-temperature environment can be solved, the loss of the photovoltaic module body can be reduced, the generating capacity of the photovoltaic module body can be improved, dirt attached to a heat dissipation ring can be scraped and cleaned through rotation of a cleaning rod, and the cleaning efficiency is improved. The heat dissipation effect is prevented from being affected by excessive dirt accumulated on the surface of the outdoor heat dissipation ring.

Description

Technical Field

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

[0002] As is well known, the power temperature coefficient, especially the peak power (Pmax) temperature coefficient, is an important standard for evaluating the performance of photovoltaic (PV) modules. This is because the power of a PV module is inversely proportional to temperature; the higher the temperature, the lower the power output. Taking a single 500W module as an example (1000 ppm irradiance, 25°C), the Pmax temperature coefficient is -0.34% / °C. Calculations show that when the ambient temperature is 50°C, the PV module's power output drops to 450W, a loss of 10%. Such a loss is enormous in power plant areas where summer temperatures can reach above 40°C, or even 60°C, severely impacting the power plant's electricity generation and revenue.

[0003] Existing technology, such as publication number CN218829851U, provides a photovoltaic module with heat dissipation function, belonging to the field of photovoltaic module technology. It includes a photovoltaic module body and a heat dissipation mechanism. The heat dissipation mechanism is installed on the back of the photovoltaic module body and includes a heat dissipation substrate. The heat dissipation substrate has multiple through-holes, with the hole size on the first side being larger than the hole size on the second side. Mounting grooves are formed on both sides of the heat dissipation substrate, the size of which matches the edge size of the photovoltaic module body's frame. The heat dissipation mechanism is inserted into the edge of the photovoltaic module body through the mounting grooves. The first side of the heat dissipation through-holes is away from the photovoltaic module body, and the second side is close to the photovoltaic module body. By installing the heat dissipation mechanism on the back of the photovoltaic module body, the temperature of the photovoltaic module body can be reduced, thereby solving the problem of low power output of the photovoltaic module under high-temperature environments, further reducing losses in the photovoltaic module body, and increasing the power generation of the photovoltaic module body.

[0004] In this case, when the flowing gas in the atmosphere moves from the first side to the second side of the heat dissipation vent, the inlet temperature decreases as the volume decreases. This results in the gas temperature at the outlet of the heat dissipation vent being lower than the gas temperature at the inlet. Since the second side is close to the photovoltaic module body, it can cool the photovoltaic module body, mainly utilizing the Joule-Thomson effect. For most gases, near normal temperature and pressure, the temperature decreases after throttling and expansion. This is because during the throttling process, the gas needs to overcome intermolecular attraction and external pressure, consuming the gas's internal energy and thus lowering its temperature. This lowers the temperature near the photovoltaic module body, thus cooling the photovoltaic module body. However, because the photovoltaic module body is separated from the relatively low-temperature gas by a heat dissipation substrate, the heat dissipation effect is relatively limited. Therefore, we propose a photovoltaic module with heat dissipation function. Utility Model Content

[0005] The purpose of this invention is to provide a photovoltaic module with heat dissipation function, which solves the problem of low power output of photovoltaic modules under high temperature environment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A photovoltaic module with heat dissipation function includes a photovoltaic module body, the edge of which is wrapped with a support frame, and a heat dissipation mechanism is provided on the back of the photovoltaic module body.

[0008] The heat dissipation mechanism includes a heat dissipation back plate, which is disposed on the back of the support frame. A heat dissipation groove is provided at the center of the heat dissipation back plate. A heat dissipation ring is fixedly connected to the inner wall of the heat dissipation groove. A cleaning rod is rotatably connected to the center of the inner wall of the heat dissipation groove for cleaning dirt adhering to the surface of the heat dissipation ring.

[0009] Preferably, the heat dissipation ring is arranged in a corrugated shape from the center area of ​​the heat dissipation groove according to the ring size, and the cleaning rod is in contact with the surface of the heat dissipation ring.

[0010] Preferably, a drive component is provided at the end of the cleaning rod away from the center area of ​​the heat dissipation slot, and a slide rail for sliding the drive component is fixedly connected to the heat dissipation slot at the position corresponding to the drive component.

[0011] Preferably, the drive assembly consists of two sliders, a bellows, and two sets of pawls. The two sliders are slidably connected to the outer wall of the slide rail. The interior of the two sliders is provided with cavities for storing liquids that expand when heated. The bellows is fixedly connected between the two sliders to connect the cavities inside the two sliders. The two sets of pawls are respectively fixedly connected to the bottom of the two sliders.

[0012] Preferably, the inner wall of the slide rail is provided with an annular groove, and an end face ratchet is fixedly connected to the inner wall of the annular groove.

[0013] Preferably, the end face ratchet is used to cooperate with the pawl for limiting, so that the drive assembly can only rotate in one direction on the slide rail.

[0014] Preferably, the heat dissipation backplate has clips fixed on both sides, and the back of the support frame has sliding buckles fixedly connected to the positions of the two sets of clips for engaging the clips.

[0015] By employing the above technical solution, this utility model provides a photovoltaic module with heat dissipation function. It possesses at least the following beneficial effects:

[0016] I. This utility model utilizes a heat dissipation mechanism on the back of the photovoltaic module body. When the photovoltaic module body generates heat during operation, the heat dissipation rings within the heat dissipation grooves on the heat dissipation backplate, arranged in a corrugated pattern, increase the contact area between the heat dissipation backplate and the external air, thereby significantly improving heat dissipation efficiency. This solves the problem of low power output of the photovoltaic module body under high-temperature environments, thereby reducing photovoltaic module body losses and increasing photovoltaic module power generation. Furthermore, the rotation of the cleaning rod can scrape and clean the dirt attached to the heat dissipation rings, preventing excessive accumulation of dirt on the surface of the heat dissipation rings during outdoor use, which would affect the heat dissipation effect.

[0017] 2. The heat dissipation backplate of this utility model is installed by inserting a clip into a sliding buckle, which can realize the interconnection between the photovoltaic module body and the heat dissipation mechanism. It is easy to install and disassemble, can be reused, and facilitates the cleaning and replacement of the photovoltaic module body. Moreover, by transferring heat through a heat-conducting medium, the overall sealing of the photovoltaic module body can be guaranteed, preventing moisture intrusion. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the heat dissipation mechanism in this utility model;

[0021] Figure 3 This is a schematic diagram of the slide rail structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the drive component in this utility model.

[0023] In the diagram: 1. Photovoltaic module body; 11. Support frame; 2. Heat dissipation mechanism; 21. Heat dissipation backplate; 211. Sliding buckle; 212. Locking strip; 22. Heat dissipation groove; 23. Heat dissipation ring; 24. Cleaning rod; 25. Slide rail; 251. Ring groove; 252. End face ratchet; 26. Drive component; 261. Slider; 262. Corrugated pipe; 263. Pawl. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] A photovoltaic module with heat dissipation function, such as Figure 1 - Figure 4 As shown, the photovoltaic module body 1 is included. The edge of the photovoltaic module body 1 is wrapped with a support frame 11. A heat dissipation mechanism 2 is provided on the back of the support frame 11. The heat dissipation mechanism 2 includes a heat dissipation back plate 21, which is located on the back of the support frame 11. A heat dissipation groove 22 is provided at the center of the heat dissipation back plate 21. A heat dissipation ring 23 is fixedly connected to the inner wall of the heat dissipation groove 22. A cleaning rod 24 is rotatably connected to the center of the inner wall of the heat dissipation groove 22 for cleaning dirt attached to the surface of the heat dissipation ring 23. The heat dissipation ring 23 is arranged in a corrugated shape from the center area of ​​the heat dissipation groove 22 according to the ring size. The cleaning rod 24 is in contact with the surface of the heat dissipation ring 23.

[0026] In this embodiment, by providing a heat dissipation mechanism 2 on the back of the photovoltaic module body 1, when the photovoltaic module body 1 generates heat during operation, the heat dissipation ring 23 in the heat dissipation groove 22 on the heat dissipation back plate 21 is arranged in a corrugated pattern to increase the contact area between the heat dissipation back plate 21 and the external air, thereby greatly improving the heat dissipation efficiency. This can solve the problem of low power of the photovoltaic module body 1 under high temperature environment, thereby reducing the loss of the photovoltaic module body 1 and increasing the power generation of the photovoltaic module body 1. In addition, by rotating the cleaning rod 24, the dirt attached to the heat dissipation ring 23 can be scraped and cleaned, avoiding excessive accumulation of dirt on the surface of the heat dissipation ring 23 when used outdoors, which affects the heat dissipation effect.

[0027] like Figure 2 , Figure 3 , Figure 4 As shown, preferably, a drive assembly 26 is provided at the end of the cleaning rod 24 away from the center area of ​​the heat dissipation groove 22. A slide rail 25 for sliding the drive assembly 26 is fixedly connected to the heat dissipation groove 22 at the position corresponding to the drive assembly 26. The drive assembly 26 consists of two sliders 261, a bellows 262, and two sets of pawls 263. The two sliders 261 are slidably connected to the outer wall of the slide rail 25. The interior of the two sliders 261 has a cavity for storing liquid that expands due to heat. The bellows 262 is fixedly connected between the two sliders 261 to connect the cavities inside the two sliders 261. The two sets of pawls 263 are fixedly connected to the bottom of the two sliders 261 respectively. An annular groove 251 is provided on the inner wall of the slide rail 25. An end face ratchet 252 is fixedly connected to the inner wall of the annular groove 251. The end face ratchet 252 is used to cooperate with the pawls 263 to limit the movement, so that the drive assembly 26 can only rotate in one direction on the slide rail 25.

[0028] In this embodiment, since the photovoltaic module body 1 converts light energy, its operating cycle is linked to the sunshine time, which means that the period of heat generation basically coincides with the sunshine time. When the photovoltaic module body 1 generates heat, the liquid water, glycerol, etc. in the cavity of the slider 261 expand due to heat, causing the corrugated pipe 262 connected to it to extend. Due to the ratchet 252 and the pawl 263, one of the sliders 261 will be pushed. When the temperature drops, the liquid in the cavity of the slider 261 condenses and contracts, which will pull the other slider 261 to slide, so that the drive component 26 intermittently slides unidirectionally on the slide rail 25, driving the cleaning rod 24 to clean, thereby achieving the purpose of automatic cleaning.

[0029] like Figure 2 As shown, preferably, the heat dissipation backplate 21 has clips 212 fixed on both sides, and the back of the support frame 11 has sliding buckles 211 fixedly connected to the positions of the two sets of clips 212 for engaging the clips 212.

[0030] In this embodiment, the heat dissipation backplate 21 is installed by inserting the clip 212 into the slide buckle 211, which can realize the interconnection between the photovoltaic module body 1 and the heat dissipation mechanism 2, making it easy to install, disassemble, and reuse, as well as clean and replace the photovoltaic module body 1.

[0031] In use, the photovoltaic module with heat dissipation function of this utility model is installed by inserting the heat dissipation backplate 21 into the sliding buckle 211 via a clip 212, which enables the interconnection between the photovoltaic module body 1 and the heat dissipation mechanism 2. Furthermore, by providing the heat dissipation mechanism 2 on the back of the photovoltaic module body 1, when the photovoltaic module body 1 generates heat during operation, the heat dissipation rings 23 within the heat dissipation grooves 22 on the heat dissipation backplate 21 are arranged in a corrugated pattern to increase the contact area between the heat dissipation backplate 21 and the external air, thereby significantly improving heat dissipation efficiency. Moreover, since the photovoltaic module body 1 converts light energy, its operation... The cycle is linked to the sunshine time, which means that the period of heat generation basically coincides with the sunshine time. When the photovoltaic module body 1 generates heat, the liquid water, glycerol and other substances in the cavity of the slider 261 expand due to heat, causing the bellows 262 connected to it to extend. Due to the ratchet 252 and the pawl 263 on the end face, one of the sliders 261 will be pushed. When the temperature drops, the liquid in the cavity of the slider 261 condenses and contracts, which will pull the other slider 261 to slide, so that the drive module 26 intermittently slides unidirectionally on the slide rail 25, driving the cleaning rod 24 to clean, thereby achieving the purpose of automatic cleaning.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module with heat dissipation function, comprising a photovoltaic module body (1), characterized in that: The photovoltaic module body (1) is wrapped with a support frame (11) on its edge, and a heat dissipation mechanism (2) is provided on the back of the photovoltaic module body (1). The heat dissipation mechanism (2) includes a heat dissipation back plate (21), which is located on the back of the support frame (11). A heat dissipation groove (22) is provided at the center of the heat dissipation back plate (21). A heat dissipation ring (23) is fixedly connected to the inner wall of the heat dissipation groove (22). A cleaning rod (24) is rotatably connected to the center of the inner wall of the heat dissipation groove (22) for cleaning dirt attached to the surface of the heat dissipation ring (23).

2. A photovoltaic module with heat dissipation function according to claim 1, characterized in that: The heat dissipation ring (23) is arranged in a corrugated pattern from the center area of ​​the heat dissipation groove (22) according to the ring size, and the cleaning rod (24) is attached to the surface of the heat dissipation ring (23).

3. A photovoltaic module with heat dissipation function according to claim 1, characterized in that: The cleaning rod (24) is provided with a drive component (26) at one end away from the center area of ​​the heat sink (22), and the heat sink (22) is fixedly connected with a slide rail (25) for sliding the drive component (26) at the position corresponding to the drive component (26).

4. A photovoltaic module with heat dissipation function according to claim 3, characterized in that: The drive assembly (26) consists of two sliders (261), a bellows (262), and two sets of pawls (263). The two sliders (261) are slidably connected to the outer wall of the slide rail (25). The two sliders (261) have cavities inside for storing liquids that expand when heated. The bellows (262) is fixedly connected between the two sliders (261) to connect the cavities inside the two sliders (261). The two sets of pawls (263) are fixedly connected to the bottom of the two sliders (261).

5. A photovoltaic module with heat dissipation function according to claim 4, characterized in that: The inner wall of the slide rail (25) is provided with an annular groove (251), and an end face ratchet (252) is fixedly connected to the inner wall of the annular groove (251).

6. A photovoltaic module with heat dissipation function according to claim 5, characterized in that: The end face ratchet (252) is used to cooperate with the pawl (263) to limit the movement, so that the drive assembly (26) can only rotate in one direction on the slide rail (25).

7. A photovoltaic module with heat dissipation function according to claim 1, characterized in that: The heat dissipation backplate (21) has clips (212) fixed on both sides, and the back of the support frame (11) is fixedly connected with a sliding buckle (211) for snapping the clips (212) at the positions corresponding to the two sets of clips (212).

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