Charging pile heat dissipation system based on foam metal composite phase change material

Abstract

The invention provides a charging pile heat dissipation system based on a foam metal composite phase change material, and belongs to the technical field of phase change material temperature control. According to the charging pile heat dissipation system based on the foam metal composite phase change material, through three-dimensional cooperation of material innovation (foam metal and the phase change material), structure optimization (gradient thickness of the cooling fins and the foam metal composite phase change material) and intelligent control (temperature feedback), the heat dissipation efficiency is improved; the contradiction between efficiency and energy consumption in a high-power heat dissipation scene of the charging pile is solved, high efficiency, reliability and economical efficiency are achieved, and an innovative solution is provided for heat management of new energy automobile charging infrastructures. The charging pile heat dissipation system based on the foam metal composite phase change material is simple in structure, meanwhile, the heat dissipation capacity of the charging pile can be improved, the service life of the charging pile can be prolonged, popularization is easy, and good social benefits are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of temperature control of phase change materials, and in particular relates to a charging pile heat dissipation system based on foam metal composite phase change materials. Background Art

[0002] With the popularity of new energy vehicles, charging piles, as important facilities for their energy replenishment, are attracting more and more attention for their performance and stability. Among them, heat dissipation technology, as an important part of the performance of charging piles, has also become the focus of the industry. The service life and efficiency of charging piles are closely related to their heat dissipation effect. How to reduce energy consumption while dissipating heat efficiently has become a hot topic of research. Compared with traditional liquid cooling and air cooling, phase change materials have the advantages of easy storage, small space requirements, high heat dissipation efficiency, etc., which facilitates thermal management. Therefore, phase change material temperature control technology has naturally become the focus of people's attention.

[0003] The low thermal conductivity of phase change materials will limit their effective absorption and release of heat. However, adding foam metals with high thermal conductivity, large specific surface area and good mixing effect to phase change materials can effectively enhance their thermal conductivity and significantly improve heat transfer performance. Phase change materials can be designed according to specific phase change temperatures and always maintain a relatively constant temperature range during the phase change process, thereby improving the stability and reliability of equipment operation. This shows that phase change material temperature control technology has good prospects in the field of heat dissipation of large charging piles. Summary of the invention

[0004] The present invention is based on the above background technology and aims to provide a charging pile heat dissipation system based on foam metal composite phase change material.

[0005] The present invention provides a charging pile heat dissipation system based on foam metal composite phase change material, which has the following characteristics: it is arranged on a large charging pile and dissipates heat for high-power heat-generating electronic components therein, and comprises: a metal fixing frame, which is arranged on the large charging pile in a vertical direction and covers the high-power heat-generating electronic components, and the high-power heat-generating electronic components are located in the lower area of ​​the metal fixing frame; the foam metal composite phase change material is arranged on the metal fixing frame and is located on a side of the metal fixing frame away from the large charging pile; a heat sink, which is arranged on the foam metal composite phase change material and is located on a side of the foam metal composite phase change material away from the large charging pile; a fan, which is located above the metal fixing frame and is used to cool and dissipate the foam metal composite phase change material and the heat sink through the metal fixing frame, wherein the metal fixing frame, the foam metal composite phase change material and the heat sink serve as a heat dissipation module, and the fan serves as an auxiliary cooling module.

[0006] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the thickness of the foam metal composite phase change material gradually increases from top to bottom, and the protruding height of the heat sink away from the large charging pile gradually decreases from top to bottom and matches the thickness of the foam metal composite phase change material.

[0007] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the heat dissipation module further includes a protective cover, and the protective cover wraps the metal fixed frame, the foam metal composite phase change material, the heat sink and the fan.

[0008] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the protective cover is arranged on the large charging pile through a plurality of support structures.

[0009] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the bottom of the protective cover and the side facing away from the large charging pile have a plurality of heat dissipation holes.

[0010] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the density of the plurality of heat dissipation holes on the side of the protective cover facing away from the large charging pile gradually increases from top to bottom.

[0011] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the number of heat sinks is several, and the heat sinks are serrated heat fins.

[0012] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the auxiliary cooling module further includes a fan fixing structure, and the fan fixing structure is used to fix the fan to the inner top of the protective cover and above the metal fixed frame.

[0013] In the charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention, it may further have the following characteristics: Among them, the number of fans is several, and the fan fixing structure matches the number of fans.

[0014] The charging pile heat dissipation system based on the foam metal composite phase change material provided by the present invention may also have such a feature, and also includes a control module, the control module includes a temperature sensor and a controller, the temperature sensor is arranged in the upper area of ​​the inner surface of the metal fixing frame away from the side of the large charging pile, and is used to detect the temperature of the foam metal composite phase change material. The controller is connected to the temperature sensor and the fan, and is used to control the operation of the fan according to the phase change temperature of the foam metal composite phase change material pre-input by the user and the temperature detected by the temperature sensor, so as to cool the heat dissipation module.

[0015] Functions and Effects of the Invention

[0016] The charging pile heat dissipation system based on foam metal composite phase change material of the present invention solves the contradiction between efficiency and energy consumption in the high-power heat dissipation scenario of the charging pile through the three-dimensional coordination of material innovation (foam metal + phase change material), structural optimization (gradient thickness of heat sink and foam metal composite phase change material) and intelligent control (temperature feedback). It has high efficiency, reliability and economy, and provides an innovative solution for the thermal management of new energy vehicle charging infrastructure.

[0017] The structure of the charging pile heat dissipation system based on the foam metal composite phase change material of the present invention is relatively simple, and at the same time, the heat dissipation capacity and service life of the charging pile can be improved, and it is easy to promote and has good social benefits.

[0018] The charging pile heat dissipation system based on foam metal composite phase change material of the present invention can prolong the service life of the equipment, and the constant temperature phase change characteristics can reduce the temperature shock of electronic components and reduce thermal fatigue damage.

[0019] The charging pile heat dissipation system based on foam metal composite phase change material of the present invention can save energy and reduce consumption, and its passive heat dissipation is mainly adopted (phase change material absorbs heat, and heat sink enhances heat dissipation), and the mechanism of fan starting on demand is more energy-efficient than the traditional air cooling system.

[0020] The charging pile heat dissipation system based on the foam metal composite phase change material of the present invention has a compact space. The high heat storage density of the foam metal composite phase change material reduces the volume of the heat dissipation system and adapts to the compact layout of the charging pile.

[0021] The charging pile heat dissipation system based on foam metal composite phase change material of the present invention has high environmental adaptability, and the protection cover design takes into account both heat dissipation and protection, and is suitable for complex outdoor working conditions (such as rain, snow, and dusty environments). BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 4 is a front view of a charging pile heat dissipation system based on a foam metal composite phase change material according to an embodiment of the present invention when it is arranged on a charging pile;

[0023] Figure 2 Side view of the charging pile heat dissipation system based on the foam metal composite phase change material according to an embodiment of the present invention when disposed on the charging pile;

[0024] Figure 3 Side sectional view of the charging pile heat dissipation system based on the foam metal composite phase change material according to an embodiment of the present invention;

[0025] Figure 4 Front view of the protective cover according to an embodiment of the present invention;

[0026] Figure 5 Front view of the heat sink area according to an embodiment of the present invention;

[0027] Figure 6 Top view of the charging pile heat dissipation system based on the foam metal composite phase change material according to an embodiment of the present invention. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the following embodiments will specifically describe a charging pile heat dissipation system based on a foam metal composite phase change material of the present invention in conjunction with the accompanying drawings.

[0029] <Embodiment>

[0030] Figure 1 Front view of the charging pile heat dissipation system based on the foam metal composite phase change material according to an embodiment of the present invention when disposed on the charging pile; Figure 2 Side view of the charging pile heat dissipation system based on the foam metal composite phase change material according to an embodiment of the present invention when disposed on the charging pile; Figure 3 Side sectional view of the charging pile heat dissipation system based on the foam metal composite phase change material according to an embodiment of the present invention.

[0031] As Figures 1 to 3 shown, this embodiment provides a charging pile heat dissipation system 100 based on a foam metal composite phase change material, which is disposed on the large charging pile 1 and dissipates heat from the high-power heating electronic components 2 therein.

[0032] The charging pile heat dissipation system 100 based on the foam metal composite phase change material includes a heat dissipation module 10, an auxiliary cooling module 20, and a control module 30.

[0033] The heat dissipation module 10 includes a protective cover 11, a metal fixing frame 12, a foam metal composite phase change material 13, and a heat sink 14.

[0034] The protective cover 11 is disposed on the large charging pile 1 in the vertical direction and covers the area where the high-power heating electronic components 2 are located, and the high-power heating electronic components 2 are located in the lower area of the protective cover 11.

[0035] Specifically, in this embodiment, the protective cover 11 is disposed on the large-scale charging pile 1 through a total of 4 support structures 11a on its left and right sides.

[0036] Figure 4 It is the front view of the protective cover of the embodiment of the present invention.

[0037] As Figure 4 shown, there are a number of heat dissipation holes 11b on the bottom of the protective cover 11 and on the side facing away from the large-scale charging pile 1. The density of the number of heat dissipation holes 11b on the side of the protective cover 11 facing away from the large-scale charging pile 1 gradually increases from top to bottom; a number of heat dissipation holes 11b at the bottom of the protective cover 11 are evenly arranged.

[0038] As Figures 1 to 2 shown, the metal fixing frame 12 is disposed on the large-scale charging pile 1 in the vertical direction. It is located inside the protective cover 11 and covers the high-power heat-generating electronic component 2 (for conducting the heat generated by the high-power heat-generating electronic component 2), and the high-power heat-generating electronic component 2 is located in the lower region of the metal fixing frame 12.

[0039] As Figures 1 to 3 shown, the foam metal composite phase change material 13 is disposed on the metal fixing frame 12 and on the side of the metal fixing frame 12 facing away from the large-scale charging pile 1. The thickness of the foam metal composite phase change material 13 gradually increases from top to bottom.

[0040] Figure 5 It is the front view of the heat sink area of the embodiment of the present invention.

[0041] As Figure 2 、 3 and 5 shown, the number of heat sinks 14 is several, and they are disposed on the foam metal composite phase change material 13 and on the side of the foam metal composite phase change material 13 facing away from the large-scale charging pile 1. The heat sinks 14 are serrated heat fins, and the height of the protrusions of the heat sinks 14 in the direction away from the large-scale charging pile 1 gradually decreases from top to bottom and matches the thickness of the foam metal composite phase change material 13.

[0042] Among them, both the foam metal composite phase change material 13 and the heat sinks 14 are located inside the protective cover 11 and are wrapped by it.

[0043] Preferably, the side of the heat sink 14 facing away from the large-scale charging pile 1 is parallel to the side of the foam metal composite phase change material 13 close to the large-scale charging pile 1, so as to further make the space of the heat dissipation system compact and adapt to the compact layout of the charging pile.

[0044] Preferably, the bending angle of the serrated heat sink 14 is 45°, and the heat sinks 14 are parallel to each other and the distance between adjacent fins is 50 mm, thereby further increasing the heat dissipation surface area and improving the heat dissipation effect.

[0045] Figure 6 It is a top view of a charging pile heat dissipation system based on foam metal composite phase change material according to an embodiment of the present invention.

[0046] like Figure 1 , 2 As shown in FIGS. 3 and 6 , the auxiliary cooling module 20 includes a fan fixing structure 21 and a fan 22 .

[0047] The fan 22 is a micro fan, and the number of the fans is several. The fan 22 is fixed to the inner top of the protective cover 11 through the fan fixing structure 21 and is located above the metal fixing frame 12, and is used to cool the foam metal composite phase change material 13 and the heat sink 14 through the metal fixing frame 12.

[0048] The control module 30 includes a temperature sensor 31 and a controller 32 .

[0049] like Figures 1 to 3 As shown, the temperature sensor 31 is disposed in the upper region of the inner surface of the metal fixing frame 12 which is away from the large charging pile 1 , and is used to detect the temperature of the foam metal composite phase change material 13 .

[0050] The controller 32 is connected to the temperature sensor 31 and the fan 22 , and is used to control the operation of the fan 22 according to the phase change temperature of the foam metal composite phase change material 13 pre-input by the user and the real-time temperature detected by the temperature sensor 31 , so as to cool the heat dissipation module 10 .

[0051] Operation process of a charging pile heat dissipation system 100 based on foam metal composite phase change material:

[0052] S01 , after the user inputs the phase change temperature of the foam metal composite phase change material 13 into the controller 32 , the user starts to use the charging pile heat dissipation system 100 based on the foam metal composite phase change material disposed on the large charging pile 1 .

[0053] S02, when the large charging pile 1 is charging, the high-power heat-generating electronic component 2 generates a large amount of heat, and the heat is conducted to the foam metal composite phase change material 13 through the metal fixing frame 12.

[0054] S03. The power-heating electronic component 2 is located in the lower region of the metal fixing frame 12, and the foam metal composite phase change material 13 in this region first melts into a liquid. In addition, due to the design of the foam metal composite phase change material 13 being filled in a top-thin and bottom-thick manner, during the heat conduction inside the foam metal composite phase change material 13, convective heat transfer is more likely to occur, accelerating the melting of the upper foam metal composite phase change material 13, thereby dissipating heat. When the working interval of the large charging pile 1 is relatively long, the foam metal composite phase change material 13 can be re-solidified only through natural convection.

[0055] In this step, the heat sink 14 assists the foam metal composite phase change material 13 in dissipating heat. The density of a number of heat dissipation holes 11b on the side of the protective cover 11 that wraps the metal fixing frame 12, the foam metal composite phase change material 13, and the heat sink 14 and faces away from the large charging pile 1 gradually increases from top to bottom, which can ensure the directionality of gas flow during the heat dissipation process.

[0056] S04. When the temperature sensor 31 monitors that the real-time temperature of the foam metal composite phase change material 13 reaches the phase change temperature of the foam metal composite phase change material 13 preset and input in step S01, the controller 32 controls the fan 22 to operate, thereby assisting the heat sink 14 in dissipating heat and accelerating the heat dissipation of the foam metal composite phase change material 13.

[0057] S05. When the temperature sensor 31 monitors that the real-time temperature of the foam metal composite phase change material 13 is lower than the phase change temperature of the foam metal composite phase change material 13 preset and input again, the controller 32 pauses the operation of the fan 22 until the real-time temperature reaches the phase change temperature again and then controls it.

[0058] Functions and effects of the embodiment

[0059] A charging pile heat dissipation system based on a foam metal composite phase change material provided in this embodiment is arranged on a large charging pile and dissipates heat from high-power heating electronic components therein. Because it includes: a metal fixing frame, which is arranged on the large charging pile in the vertical direction and covers the high-power heating electronic components, and the high-power heating electronic components are located in the lower region of the metal fixing frame; a foam metal composite phase change material, which is arranged on the metal fixing frame and on the side of the metal fixing frame facing away from the large charging pile; a heat sink, which is arranged on the foam metal composite phase change material and on the side of the foam metal composite phase change material facing away from the large charging pile; a fan, which is located above the metal fixing frame and is used to cool and dissipate heat from the foam metal composite phase change material and the heat sink through the metal fixing frame. Among them, the metal fixing frame, the foam metal composite phase change material, and the heat sink serve as a heat dissipation module, and the fan serves as an auxiliary cooling module.

[0060] Therefore, a charging pile heat dissipation system based on a foam metal composite phase change material in this embodiment has the following beneficial effects:

[0061] (1) The structure is relatively simple and can improve the heat dissipation capacity and service life of the charging pile. It is easy to promote and has good social benefits.

[0062] (2) The high thermal conductivity of metal foam compensates for the low thermal conductivity of phase change materials, accelerating the transfer of heat from electronic components to phase change materials; phase change materials achieve constant temperature heat absorption through phase change latent heat, reduce temperature fluctuations, and improve heat dissipation stability. The combination of the two significantly improves the overall thermal management efficiency.

[0063] (3) A layered heat dissipation structure is formed, in which the phase change material absorbs heat, the heat sink enhances heat dissipation, and the fan assists cooling.

[0064] Furthermore, the thickness of the foam metal composite phase change material gradually increases from top to bottom, and the height of the protrusion of the heat sink away from the large charging pile gradually decreases from top to bottom and matches the thickness of the foam metal composite phase change material. With this arrangement, the heat dissipation efficiency of the entire system is improved through the structural optimization of the gradient thickness of the heat sink and the foam metal composite phase change material. The design of increasing the thickness of the phase change material from top to bottom and decreasing the height of the heat sink matches the heat load distribution in the high-heating area at the bottom of the charging pile: the thickened material at the bottom can absorb more heat, and the thinned heat sink at the top avoids redundant weight, realizes the spatial adaptation of the heat dissipation capacity, and optimizes the material utilization rate.

[0065] Furthermore, the heat dissipation module also includes a protective cover, which wraps the metal fixing frame, the foam metal composite phase change material, the heat sink and the fan. The protective cover is arranged on the large charging pile through a plurality of supporting structures. The bottom of the protective cover and the side facing away from the large charging pile have a plurality of heat dissipation holes. The density of the plurality of heat dissipation holes on the side of the protective cover facing away from the large charging pile gradually increases from top to bottom.

[0066] Such a setting has the following technical effects:

[0067] (1) It has high environmental adaptability. The protective cover design takes into account both heat dissipation and protection, and is suitable for complex outdoor working conditions (such as rain, snow, and dusty environments).

[0068] (2) The heat dissipation holes and their sparse design at the top and dense design at the bottom can ensure the directionality of gas flow (using the natural rising effect of hot air to enhance the efficiency of passive heat dissipation).

[0069] (3) The metal frame and fixed structure ensure the mechanical stability of the heat dissipation component for long-term operation.

[0070] Furthermore, the number of heat sinks is several, and the heat sinks are sawtooth heat sinks. Such an arrangement can increase the heat dissipation surface area and improve the heat dissipation effect.

[0071] Furthermore, the auxiliary cooling module also includes a fan fixing structure, which is used to fix the fan to the inner top of the protective cover and is located above the metal fixing frame. The number of fans is several, and the fan fixing structure matches the number of fans. This arrangement can ensure that the fan is correctly positioned and effectively cooled.

[0072] Furthermore, a charging pile heat dissipation system based on foam metal composite phase change material also includes a control module, which includes a temperature sensor and a controller. The temperature sensor is set in the upper area of ​​the inner surface of the metal fixing frame away from the large charging pile side, and is used to detect the temperature of the foam metal composite phase change material. The controller is connected to the temperature sensor and the fan, and is used to control the fan operation according to the phase change temperature of the foam metal composite phase change material pre-input by the user and the temperature detected by the temperature sensor, so as to cool and dissipate the heat dissipation module. Such a setting has the following beneficial effects: the temperature sensor monitors the temperature of the phase change material in real time, and the controller dynamically adjusts the start and stop of the fan according to the preset phase change temperature, thereby avoiding the risk of overheating and reducing ineffective energy consumption, and achieving precise temperature control and energy saving.

[0073] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A charging pile heat dissipation system based on foam metal composite phase change material, characterized in that: Installed on large charging piles to dissipate heat from high-power heat-generating electronic components, including: A metal fixing frame is arranged on the large charging pile in a vertical direction and covers the high-power heat-generating electronic component, wherein the high-power heat-generating electronic component is located in a lower area of ​​the metal fixing frame; A foam metal composite phase change material is arranged on the metal fixing frame and is located on a side of the metal fixing frame away from the large charging pile; A heat sink is disposed on the foam metal composite phase change material and is located on a side of the foam metal composite phase change material away from the large charging pile; a fan, located above the metal fixing frame, for cooling and dissipating the foam metal composite phase change material and the heat sink through the metal fixing frame, The metal fixing frame, the foam metal composite phase change material and the heat sink serve as a heat dissipation module, and the fan serves as an auxiliary cooling module.

2. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 1 is characterized in that: in, The thickness of the foam metal composite phase change material gradually increases from top to bottom. The height of the protrusion of the heat sink away from the large charging pile gradually decreases from top to bottom and matches the thickness of the foam metal composite phase change material.

3. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 1 is characterized in that: in, The heat dissipation module further comprises a protective cover, which wraps the metal fixing frame, the foam metal composite phase change material, the heat sink and the fan.

4. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 3 is characterized in that: in, The protective cover is arranged on the large charging pile through a plurality of supporting structures.

5. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 3 is characterized in that: in, The bottom of the protective cover and a side facing away from the large charging pile are provided with a plurality of heat dissipation holes.

6. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 5 is characterized in that: in, The density of the heat dissipation holes on the side of the protective cover facing away from the large charging pile gradually increases from top to bottom.

7. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 1 is characterized in that: in, The number of the heat sinks is several, The heat sink is a serrated heat sink.

8. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 3 is characterized by: in, The auxiliary cooling module also includes a fan fixing structure, The fan fixing structure is used to fix the fan on the inner top of the protection cover and is located above the metal fixing frame.

9. The charging pile heat dissipation system based on foam metal composite phase change material according to claim 8, characterized in that: in, The number of fans is several, The fan fixing structure matches the number of the fans.

10. The charging pile heat dissipation system based on foam metal composite phase change material according to any one of claims 1 to 9, characterized in that: Also includes a control module, The control module includes a temperature sensor and a controller. The temperature sensor is disposed in the upper area of ​​the inner surface of the metal fixing frame which is away from the large charging pile, and is used to detect the temperature of the foam metal composite phase change material. The controller is connected to the temperature sensor and the fan, and is used to control the operation of the fan according to the phase change temperature of the foam metal composite phase change material pre-input by the user and the temperature detected by the temperature sensor, so as to cool and dissipate heat for the heat dissipation module.

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