Phase change temperature control support and photovoltaic system

Abstract

The utility model provides a phase change temperature control support and a photovoltaic system, and relates to the photovoltaic technology field, the phase change temperature control support comprises a support main body used for connecting roof encaustic tile steel and a photovoltaic assembly, and a phase change material arranged in the support main body, the roof encaustic tile steel is wavy, and the photovoltaic assembly is arranged in the support main body. The support body is arranged between two crests of the roof encaustic tile steel, the distance between the two sides of the support body and the crests of the roof encaustic tile steel is smaller than a preset value, the top of the support body is flush with the crests of the roof encaustic tile steel, and the middle section of the top of the support body is concaved inwards to form a glue containing groove. And the bracket main body is in glue joint with the photovoltaic module. The photovoltaic system comprises the phase change temperature control support. The phase change temperature control support solves the problem that in the prior art, a phase change temperature control support which is good in heat dissipation effect and capable of enhancing the thermal anti-pressure capability of a photovoltaic panel is lacked.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a phase change temperature control bracket and photovoltaic system. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at semiconductor interfaces. It mainly consists of three parts: solar panels, controllers, and inverters, with the main components being electronic devices. Due to the current demand for energy-saving renovations of steel buildings, photovoltaic panels need to be installed on the corrugated steel roofs of most single-story steel-structure buildings.

[0003] During use, some of the solar energy that is not converted into electrical energy is converted into heat energy by solar photovoltaic panels. In addition, there is resistance in the circuits and connectors of the photovoltaic panels. When current continues to pass through these resistors, some electrical energy will be converted into heat energy, causing the solar photovoltaic panels to heat up. Overheating of the photovoltaic panels can lead to a decrease in performance or damage.

[0004] Therefore, existing photovoltaic (PV) panels typically have supports to suspend them from the corrugated steel roof tiles. The supports are fixedly connected to the steel tiles, and heat dissipation occurs through the suspended channels between the PV panels and the steel tiles. However, the effectiveness of this heat dissipation method depends on the external environment; strong winds result in better heat dissipation, but the effect is unstable. Furthermore, during PV panel installation, workers need to walk on the panels, and stepping on the unsupported areas at the bottom of the panels can cause them to crack. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a phase change temperature control bracket, which aims to solve the problem in the prior art of lacking a phase change temperature control bracket with good heat dissipation effect and the ability to enhance the thermal pressure resistance of photovoltaic panels.

[0006] The phase change temperature control bracket proposed in this utility model includes a bracket body for connecting the roof tile steel and the photovoltaic module, and a phase change material disposed within the bracket body. The roof tile steel is wavy, and the bracket body is disposed between the two crests of the roof tile steel. The distance between the two sides of the bracket body and the crests of the roof tile steel is less than a preset value. The top of the bracket body is flush with the crests of the roof tile steel. The middle section of the top of the bracket body is recessed inward to form an adhesive groove so as to bond the bracket body to the photovoltaic module.

[0007] The aforementioned phase-change temperature control bracket, by placing the bracket body between the crests of the roof tile steel, ensures that the distance between the bracket body and the crests of the roof tile steel is less than the width of an adult's foot. This allows workers installing photovoltaic modules to share the load when stepping on them, with the bracket body and the roof tile steel bearing the weight, rather than the photovoltaic modules being suspended in mid-air. This enhances the photovoltaic modules' compressive strength and prevents breakage. Furthermore, by aligning the top of the bracket body with the crests of the roof tile steel, a height difference is avoided, preventing excessive shear force that could damage the photovoltaic modules. In addition, by incorporating phase-change material within the bracket body, the photovoltaic modules absorb heat generated during photovoltaic power generation, maintaining their temperature within the normal operating range. Moreover, by filling the bracket body with phase-change material, the phase-change material also shares the pressure borne by the bracket body, indirectly increasing the structural strength of the bracket body. Furthermore, in practical implementation, the adhesive groove at the top of the support body allows for a structural adhesive connection between the support body and the photovoltaic module, thus avoiding the use of clamps to fix the photovoltaic module to the support body, which could cause the clamps to tear and rub against the photovoltaic module under wind conditions. Therefore, this invention solves the problem of the lack of a phase change temperature control support with good heat dissipation and enhanced thermal resistance of photovoltaic panels in the prior art.

[0008] In addition, the phase change temperature control bracket proposed in this utility model may also have the following additional technical features:

[0009] Preferably, the support body has a connecting pipe and an auxiliary pipe disposed on one side of the connecting pipe. The auxiliary pipe extends at least partially out of the support body. The connecting pipe has a through groove inside the connecting pipe. The outer contour of the auxiliary pipe is adapted to the through groove. The phase change material is disposed in the through groove.

[0010] Preferably, the auxiliary tube has outwardly tilted cards on both sides, the tilt of the cards gradually increases from the side away from the connecting tube to the other side, and the connecting tube has a card slot on the side away from the auxiliary tube that is adapted to the card.

[0011] Preferably, both ends of the inner side of the support body and the connecting tube are provided with encapsulation components, and the two encapsulation components are used to encapsulate and fix the phase change material in the support body and the connecting tube respectively.

[0012] Preferably, a heat dissipation pipe is provided between the main body of the support and the crest of the corrugated steel roof, and coolant flows in the heat dissipation pipe.

[0013] Preferably, multiple nozzles are evenly distributed on the heat dissipation pipe, and the nozzles are connected to the heat dissipation pipe through auxiliary pipes.

[0014] Preferably, the cross-sectional area of ​​the phase change bracket gradually increases from the bottom to the top.

[0015] Preferably, the connecting pipe is provided with a through-hole, and the through-hole and fastener cooperate to fix the bracket to the roof tile steel.

[0016] In addition, this utility model also provides a photovoltaic system, which includes multiple phase change temperature control brackets as described above, and photovoltaic modules disposed on the phase change temperature control brackets. Attached Figure Description

[0017] Figure 1 This is a partial assembly diagram of the phase change temperature control bracket installation, photovoltaic module and roof color tile steel proposed in one embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A partial front view;

[0019] Figure 3 for Figure 1 A partial structural diagram showing the photovoltaic modules hidden behind the image.

[0020] Figure 4 This is a partial structural diagram of one end of the phase change temperature control bracket hidden behind the bracket body and heat dissipation pipe in one embodiment of the present utility model.

[0021] Figure 5 for Figure 4 A partial structural diagram of the other end;

[0022] Figure 6 This is a partial structural diagram of the heat dissipation pipe in one embodiment of the present invention.

[0023] Explanation of key component symbols:

[0024] Support body 10 Phase change materials 20 Glue tank 11 Connecting pipe 30 Auxiliary tube 40 Through slot 31 card 41 Card slot 32 Package 50 heat dissipation pipes 60 spray head 61 Auxiliary tube 62 Reserved hole 12 fastener 70 Steel roof tiles 80 photovoltaic modules 90

[0025] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1 to 6 The image shows a phase change temperature control bracket according to an embodiment of the present invention, comprising a bracket body 10 for connecting roof color tile steel 80 and photovoltaic module 90, and a phase change material 20 disposed within the bracket body 10, wherein:

[0030] The roof tile steel 80 is wavy, and the support body 10 is set between the two peaks of the roof tile steel 80. The distance between the two sides of the support body 10 and the peaks of the roof tile steel 80 is less than a preset value. The top of the support body 10 is flush with the peaks of the roof tile steel 80. The middle section of the top of the support body 10 is recessed inward to form an adhesive groove 11 so that the support body 10 can be bonded to the photovoltaic module 90.

[0031] Understandably, by setting the support body 10 between the crests of the roof tile steel 80, the distance between the support body 10 and the crests of the roof tile steel 80 is less than the width of an adult's foot. This allows workers installing the photovoltaic module 90 to share the load when stepping on it, with the support body 10 and the roof tile steel 80 sharing the load, rather than the photovoltaic module 90 being suspended in mid-air. This enhances the photovoltaic module 90's compressive strength and prevents it from breaking. Furthermore, by aligning the top of the support body 10 with the crests of the roof tile steel 80, a height difference is avoided, preventing excessive shear force that could damage the photovoltaic module 90. In addition, by incorporating phase change material 20 within the support body 10, the photovoltaic module 90 absorbs the heat generated during photovoltaic power generation, maintaining its temperature within the normal operating range. Moreover, by filling the support body 10 with phase change material 20, the phase change material 20 also shares the pressure borne by the support body 10, thereby indirectly increasing the structural strength of the support body 10. Furthermore, in practical implementation, the adhesive groove 11 provided on the top of the support body 10 allows the support body 10 and the photovoltaic module 90 to be fixedly connected by structural adhesive. This avoids fixing the photovoltaic module 90 to the support body 10 with clamps, which could cause the clamps to tear and rub against the photovoltaic module 90 under wind. Therefore, this utility model solves the problem in the prior art of lacking a phase change temperature control support with good heat dissipation and enhanced thermal resistance of the photovoltaic panel.

[0032] Specifically, the support body 10 has a connecting pipe 30 and an auxiliary pipe 6240 located on one side of the connecting pipe 30. The auxiliary pipe 6240 extends at least partially out of the support body 10. The connecting pipe 30 has a through groove 31 that penetrates the connecting pipe 30. The outer contour of the auxiliary pipe 6240 is adapted to the through groove 31, and the through groove 31 contains phase change material 20. In practice, the auxiliary pipe 6240 and the connecting pipe 30 are connected by a tenon and mortise joint through the through groove 31. The connecting pipe 30 is then connected to the support body 10. This allows adjacent support bodies 10 to be connected through the connecting pipe 30 and the auxiliary pipe 6240, enabling multiple support bodies 10 to be interconnected and connected to the photovoltaic module 90 to form a unified structure. This allows external forces, such as wind and hail, to be distributed among the components, reducing local stress and indirectly increasing the overall structural strength. Furthermore, in a specific implementation, the connecting pipe 30 and the support body 10 can be bonded together using structural adhesive. Additionally, in a specific implementation, by placing the connecting pipe 30 inside the support body 10 and below the adhesive groove 11, the support body 10 is further strengthened, preventing the support body 10 from being recessed to form the adhesive groove 11, which would reduce the overall structural strength of the support body 10.

[0033] Additionally, the auxiliary tube 6240 has outwardly tilted cards 41 on both sides. The tilt of the cards 41 gradually increases from the side away from the connecting tube 30 to the other side. The connecting tube 30 has a slot 32 on the side away from the auxiliary tube 6240 that matches the cards 41. In specific implementation, by aligning the auxiliary tube 6240 with the through slot 31 and inserting the cards 41 into the through slot 31, the cards 41 are first squeezed and moved inward towards the auxiliary tube 6240 until they reach the slot 32. Under the action of their own elastic force, the cards 41 rebound and extend out of the slot 32. This ensures that when the auxiliary tube 6240 is subjected to external force away from the through slot 31, the cards 41 will interfere with the slot 32. This achieves the interlocking function between the auxiliary tube 6240 and the connecting tube 30. Furthermore, in specific implementation, structural adhesive can be applied to the outside of the auxiliary tube 6240 to further strengthen the connection between the connecting tube 30 and the auxiliary tube 6240.

[0034] Specifically, both ends of the inner sides of the support body 10 and the connecting pipe 30 are provided with encapsulation components 50. The two encapsulation components 50 are used to encapsulate and fix the phase change material 20 within the support body 10 and the connecting pipe 30, respectively. By setting the encapsulation components 50, the phase change material 20 is sealed inside the support body 10 and the connecting pipe 30, and since both the support body 10 and the connecting pipe 30 are closed structures, the phase change material 20 will not flow out of the support body 10 and the connecting pipe 30 during phase change heat absorption, thus preventing material loss and affecting subsequent heat dissipation. As an example, and not a limitation, in some optional embodiments, the phase change material 20 can use organic paraffin, inorganic hydrated sodium sulfate decahydrate, calcium chloride hexahydrate, or eutectic mixtures, and porous materials such as diatomaceous earth, calcium carbide, and renewable plastic foam as carriers.

[0035] Additionally, a heat dissipation pipe 60 is provided between the support body 10 and the crest of the corrugated steel roof, with coolant flowing inside the heat dissipation pipe 60. In specific implementation, the heat dissipation pipes 60 set on both sides of the support body 10 can also be used to assist in heat dissipation of the photovoltaic module 90, thereby preventing sudden overheating. If the temperature of the photovoltaic module 90 and the outside environment becomes too high, exceeding the heat absorption limit of the phase change material 20, the coolant flowing in the heat dissipation pipes 60 can then assist in heat dissipation, absorbing the heat from the photovoltaic module 90.

[0036] It should be noted that water is typically used as the coolant. The water absorbs heat from the photovoltaic module 90 and also dissipates heat from the photovoltaic module 90. The heated water can be recycled, for example, by introducing a lithium bromide chiller unit to preheat the water, improving the efficiency of solar energy utilization and better achieving building energy conservation. It can also reduce power generation losses caused by excessively high temperatures in the photovoltaic power generation system. Alternatively, air can be used as the heat dissipation medium. In winter, cold outside air is introduced into the heat exchange pipes, and the air that has absorbed heat is then introduced into the building interior through duct fans, improving indoor comfort, reducing air conditioning energy consumption, and achieving building energy conservation—a win-win situation. Furthermore, in practical implementation, temperature sensors can be installed, with multiple temperature sensors evenly distributed at the bottom of the photovoltaic module 90. By using an external variable frequency water pump, the pump speed can be adjusted according to temperature. For example, the normal pump speed is level 1; when the target temperature of the temperature sensor is 35 degrees Celsius, the pump speed increases to level 2; and when the target temperature of the temperature sensor is 45 degrees Celsius, the pump speed increases to level 3. This adjusts the heat dissipation effect to regulate the temperature of the photovoltaic module 90. Furthermore, the sensor can transmit its detection information to the central processing unit of the system via wireless communication methods such as Wi-Fi, Bluetooth, infrared, and radio frequency, allowing the central processing unit to adjust the water pump based on the sensor information. The sensor can be powered by its own power supply or by an external power supply. When powered by an external power supply, through-holes can be made in the connection plate between the photovoltaic modules 90, and wires can be used to connect the sensor to the photovoltaic module 90, utilizing the electricity generated by the photovoltaic power generation of the photovoltaic module 90 for operation.

[0037] Furthermore, multiple nozzles 61 are evenly distributed on the heat dissipation pipe 60, and the nozzles 61 are connected to the heat dissipation pipe 60 through an auxiliary pipe 6240. When water is used as the coolant, multiple nozzles 61 can be installed to allow the water in the heat dissipation pipe 60 to be sprayed out in the form of water mist, thereby rapidly cooling the photovoltaic module 90. Thus, the on / off state of the nozzles 61 can be controlled according to the temperature of the photovoltaic module 90 to determine whether to use a rapid cooling method.

[0038] Specifically, the cross-sectional area of ​​the phase change bracket gradually increases from bottom to top. By adjusting the shape of the phase change bracket, while ensuring the structural strength of the bracket, the area at the top of the bracket is larger with the same material dimensions. This allows for the use of less material to make the distance between the 80-degree corrugated steel roof tile and the top of the phase change bracket less than a preset value. Thus, the bracket body 10 fulfills its function while reducing material usage, thereby saving costs.

[0039] Additionally, the connecting pipe 30 is provided with a through-hole 12, which, together with the fastener 70, allows the bracket to be fixed to the roof tile steel 80. Furthermore, in practical implementation, by additionally providing the through-hole 12, the roof tile steel 80 is also connected to the bracket body 10 via the fastener 70, further enhancing the connection strength between the two.

[0040] In summary, the phase change temperature control bracket in the above embodiments of this utility model, by setting the bracket body 10 between the crests of the roof tile steel 80, ensures that the distance between the bracket body 10 and the crests of the roof tile steel 80 is less than the width of an adult's foot. This allows workers installing the photovoltaic module 90 to share the load when stepping on it, with the bracket body 10 and the roof tile steel 80 sharing the load, rather than the photovoltaic module 90 being suspended in mid-air. This enhances the compressive strength of the photovoltaic module 90 and prevents it from breaking. Furthermore, by aligning the top of the bracket body 10 with the crests of the roof tile steel 80, a height difference is avoided, preventing excessive shear force that could damage the photovoltaic module 90. In addition, by incorporating a phase change material 20 within the bracket body 10, the photovoltaic module 90 absorbs the heat generated during photovoltaic power generation, maintaining its temperature within the normal operating range. Furthermore, by filling the support body 10 with phase change material 20, the phase change material 20 shares the pressure borne by the support body 10, thereby indirectly improving the structural strength of the support body 10. In addition, in specific implementation, the adhesive groove 11 provided at the top of the support body 10 allows the support body 10 and the photovoltaic module 90 to be fixedly connected by structural adhesive, thus avoiding the use of clamps to fix the photovoltaic module 90 to the support body 10, which would cause the clamps to tear and rub against the photovoltaic module 90 under wind conditions. Therefore, this utility model solves the problem in the prior art of lacking a phase change temperature control support with good heat dissipation and enhanced thermal pressure resistance of the photovoltaic panel.

[0041] In addition, this utility model also proposes a photovoltaic system, including multiple phase change temperature control brackets as described in the above embodiments and photovoltaic modules 90 disposed on the phase change temperature control brackets.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A phase change temperature control bracket, characterized in that, The system includes a support body for connecting the roof tile steel and the photovoltaic module, and a phase change material disposed within the support body. The roof tile steel is wavy, and the support body is disposed between two peaks of the roof tile steel. The distance between the two sides of the support body and the peaks of the roof tile steel is less than a preset value. The top of the support body is flush with the peaks of the roof tile steel. The middle section of the top of the support body is recessed inward to form an adhesive groove so as to bond the support body to the photovoltaic module.

2. The phase change temperature control bracket according to claim 1, characterized in that, The support body has a connecting pipe and an auxiliary pipe disposed on one side of the connecting pipe. The auxiliary pipe extends at least partially out of the support body. The connecting pipe has a through groove on its inner side. The outer contour of the auxiliary pipe is adapted to the through groove. The phase change material is disposed in the through groove.

3. The phase change temperature control bracket according to claim 2, characterized in that, The auxiliary tube has outwardly tilted cards on both sides, and the tilt of the cards gradually increases from the side away from the connecting tube to the other side. The connecting tube has a card slot on the side away from the auxiliary tube that is adapted to the card.

4. The phase change temperature control bracket according to claim 2, characterized in that, Both ends of the inner side of the support body and the connecting pipe are provided with encapsulation components, which are used to encapsulate and fix the phase change material in the support body and the connecting pipe respectively.

5. The phase change temperature control bracket according to claim 1, characterized in that, A heat dissipation pipe is provided between the main body of the support and the crest of the roof tile steel, and coolant flows in the heat dissipation pipe.

6. The phase change temperature control bracket according to claim 5, characterized in that, Multiple nozzles are evenly distributed on the heat dissipation pipe, and the nozzles are connected to the heat dissipation pipe through auxiliary pipes.

7. The phase change temperature control bracket according to claim 1, characterized in that, The cross-sectional area of ​​the phase change temperature control bracket gradually increases from the bottom to the top.

8. The phase change temperature control bracket according to claim 2, characterized in that, The connecting pipe is provided with a through-hole, and the through-hole and fastener cooperate to fix the bracket to the roof tile steel.

9. A photovoltaic system, characterized in that, It includes the phase change temperature control bracket as described in any one of claims 1 to 8 and the photovoltaic module disposed on the phase change temperature control bracket.

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