Heat dissipation structure of charging pile

Abstract

The invention discloses a heat dissipation structure of a charging pile, and belongs to the technical field of charging piles. The heat dissipation structure mainly comprises a heat dissipation panel, guide pipes and an air outlet barrel, wherein every two guide pipes are grouped and are symmetrically arranged at the upper end and the lower end of the air outlet barrel. An elastic valve is arranged in an inner cavity of the air outlet barrel, one end of the valve is fixed to the outer surface of the heat dissipation panel, the inner cavity of the valve is equally divided into an upper cavity and a lower cavity which are independent, and the valve can be expanded and elastically reset after being stressed. The upper cavity and the lower cavity are communicated with the interior of the heat dissipation panel through the guide pipes. Two sets of air supply systems which are not communicated with each other are arranged on the inner wall of the panel, each air supply system comprises a branch cover, a main cover and an air inlet cover and is provided with exhaust fans which operate alternately. During operation, the two rows of fans work alternately, and hot air is driven to enter cavities in the two sides of the valve through the cover bodies at all levels in sequence. Due to the fact that the valves are pressed to generate alternate bulging motion, dynamic adjustment of the volume of the air outlet is achieved. The charging pile is uniform in heat dissipation effect and has the dust removal and anti-blocking characteristics, and the operation reliability of the charging pile under the high heat load is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for charging piles, and specifically to a heat dissipation structure for charging piles. Background Technology

[0002] With the development of high-power charging technology, the heat generated by charging piles during operation has increased significantly. To ensure the stable operation of internal power electronic components, a forced air cooling system is usually required for heat dissipation. Current heat dissipation solutions mainly involve installing fans on the heat dissipation panel, utilizing the air pressure difference to exchange hot air inside the cabinet with cool air outside.

[0003] However, this conventional heat dissipation method still has the following shortcomings in practical applications: First, existing heat dissipation structures often have fixed airflow paths, and the direction of the exhaust airflow is relatively singular and constant. Under this stable airflow condition, a thick and stable thermal boundary layer easily forms on the outer surface of the heat dissipation panel. This trapped hot air acts like a heat insulation layer, hindering the further conduction of internal heat to the external environment and limiting the improvement of overall heat exchange efficiency.

[0004] Secondly, to improve heat dissipation reliability or meet the heat dissipation requirements under different power loads, charging piles often employ multi-fan systems. However, in actual operation, when some fans stop or malfunction due to control strategies, the pressure difference generated by the running fans can cause external air to flow back into the cabinet through the channels of the non-running fans, resulting in backflow. This backflow not only reduces heat dissipation efficiency but also allows moisture and dust from the external environment to directly enter the core area of ​​the charging pile.

[0005] To suppress backflow, existing technologies typically require the installation of additional mechanical check valves or linked louvers within the air duct. However, these mechanical valves are structurally complex, and because charging stations are exposed to harsh outdoor environments with high dust and humidity, the rotating mechanical parts are prone to jamming or failure due to dust accumulation and corrosion. This not only increases the system's manufacturing cost and the frequency of routine maintenance but also reduces the reliability of the entire cooling system during long-term operation. Summary of the Invention

[0006] The present invention aims to provide a heat dissipation structure for charging piles to solve the technical problems mentioned in the background art, such as low heat dissipation efficiency, complex structure and backflow of air.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a heat dissipation structure for a charging pile, comprising: A heat dissipation panel is provided with multiple ducts and multiple air outlets. The ducts are arranged in pairs and symmetrically arranged at the upper and lower ends of the air outlets. The ducts pass through the outside of the heat dissipation panel to the inside of the heat dissipation panel. Each of the air outlet ducts is provided with an elastic valve inside. One end of the elastic valve is fixed to the outer surface of the heat dissipation panel. The elastic valve divides the internal cavity of the air outlet duct into a first cavity located above and a second cavity located below. The elastic valve can expand after being subjected to force and elastically return to its original position after the external force is removed. In this configuration, of the two conduits in a group, one conduit connects the first cavity to the interior of the heat dissipation panel, and the other conduit connects the second cavity to the interior of the heat dissipation panel; The inner wall of the heat dissipation panel is provided with two sets of air supply systems that are not connected to each other. The first set of air supply systems is used to supply air to each of the first cavities, and the second set of air supply systems is used to supply air to each of the second cavities.

[0008] Furthermore, the first air supply system includes a first branch cover, a first main cover, and a first air inlet cover disposed on the inner wall of the heat dissipation panel; Each of the first branch covers is respectively installed on the through end of the duct that connects to the first cavity, and each of the first branch covers is connected to the first main cover, which in turn is connected to the first air inlet cover.

[0009] Furthermore, the second air supply system includes a second branch cover, a second main cover, and a second air inlet cover disposed on the inner wall of the heat dissipation panel; Each of the second branch covers is respectively installed on the through end of the duct that connects to the second cavity, and each of the second branch covers is connected to the second main cover, which is connected to the second air inlet cover.

[0010] Furthermore, a first row of fans is provided on the first air intake hood, and a second row of fans is provided on the second air intake hood. The first row of fans and the second row of fans are controlled to operate alternately.

[0011] Furthermore, the air outlet has a box-shaped structure, with one end fixed to the outer surface of the heat dissipation panel and blocked by the heat dissipation panel, and the end of the air outlet away from the heat dissipation panel is open.

[0012] Furthermore, the other end of the elastic valve extends away from the heat dissipation panel and reaches the opening of the air outlet, thereby dividing the opening of the air outlet in two.

[0013] Furthermore, both the first cavity and the second cavity are wide and flat in the state where the elastic valve is not under stress.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention provides an air outlet duct on the outside of the heat dissipation panel and an elastic valve fixed to the heat dissipation panel at one end inside the air outlet duct. This structurally divides the internal space of the air outlet duct into a first cavity located at the top and a second cavity located at the bottom. With the help of two sets of non-connected air supply systems, independent heat dissipation airflow channels are formed inside the charging pile, thus avoiding mutual interference between different airflows at the structural level.

[0015] During the air supply process, when one of the air supply systems is working, the positive pressure airflow generated acts on the elastic valve, causing the elastic valve to bulge and deform towards the other cavity under the constraint of its fixed end, thereby compressing the effective space of the other cavity and forming an adaptive sealing effect at the end of the air outlet. This effectively suppresses the backflow of heat dissipation airflow between different channels, eliminating the need for additional mechanical check valves or complex control mechanisms. The structure is simple and highly reliable.

[0016] Meanwhile, by controlling the two sets of air supply systems to operate alternately, the elastic valves deform periodically in the vertical direction, and the direction of the heat dissipation airflow at the air outlet changes alternately, forming an exhaust mode with disturbance characteristics. Compared with stable exhaust in a single direction, this is beneficial to destroy the thermal boundary layer and enhance the diffusion effect of hot air, thereby improving the overall heat dissipation efficiency.

[0017] In addition, while achieving airflow isolation, backflow prevention and improved heat dissipation efficiency, the present invention has a compact overall structure, low energy consumption and few failure points, making it particularly suitable for charging pile equipment that operates continuously for a long time, and helping to improve the operational stability and service life of the charging pile. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a heat dissipation structure for a charging pile according to the present invention; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a partial cross-sectional view of the air outlet duct and its internal elastic valve in this invention. Figure 4 This is a three-dimensional structural diagram of the inner wall of the heat dissipation panel in this invention; Figure 5 This is a schematic diagram of the assembly structure of the internal air duct cover in this invention.

[0019] In the diagram: 1. Heat dissipation panel; 2. Duct; 3. Air outlet; 301. Elastic valve; 4. First branch cover; 5. Second branch cover; 6. First main cover; 7. Second main cover; 8. First air inlet cover; 9. Second air inlet cover; 10. First exhaust fan; 11. Second exhaust fan. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Reference Figures 1 to 5 The heat dissipation panel 1 is installed on the side or back of the charging pile cabinet to dissipate heat generated by internal components through forced convection. Multiple air outlet ducts 3 are arrayed on the outer surface of the heat dissipation panel 1. Each air outlet duct 3 has a flat, box-like structure, extending perpendicularly to the heat dissipation panel 1 along its length. The inner end of the air outlet duct 3 is fixed to the heat dissipation panel 1 by welding, fasteners, or other sealing methods, and the opening at this inner end is sealed by the heat dissipation panel 1. The outer end of the air outlet duct 3 has an opening for the discharge of hot air. A conduit 2 is symmetrically arranged above and below each air outlet duct 3. The conduit 2 is curved and extends from the outside of the heat dissipation panel 1 into the inside of the cabinet, forming a fluid channel connecting the inside and outside.

[0025] The internal cavity of the air outlet duct 3 is physically divided by an elastic valve 301. The elastic valve 301 is made of a material with good elastic modulus and fatigue resistance, such as fluororubber or high-performance silicone. One end of the elastic valve 301 is fixed to the outer surface of the heat dissipation panel 1, and the fixing position is located between two groups of ducts 2, thus forming a cantilever or anchored support. The elastic valve 301 extends along the length of the air outlet duct 3 to its end opening, dividing the internal space of the air outlet duct 3 into an upper first cavity and a lower second cavity. In its natural state, the elastic valve 301 is in a flush position, and both the first cavity and the second cavity are narrow and wide slits. The duct 2 located above the air outlet duct 3 connects the inside of the cabinet with the first cavity, and the duct 2 located below connects the inside of the cabinet with the second cavity, thus structurally forming two completely independent airflow organization paths that are physically isolated at their end openings.

[0026] The inner wall of the heat dissipation panel 1 is equipped with a complex cover structure to achieve hierarchical airflow distribution. Specifically, a first air inlet shroud 8 and a second air inlet shroud 9 are provided on the inner wall of the heat dissipation panel 1, which are used to support the power source. The first air inlet shroud 8 is connected to the first main shroud 6, which extends longitudinally along the heat dissipation panel 1 and is connected to multiple laterally extending first branch shrouds 4. Each first branch shroud 4 covers the through end of a corresponding row of ducts 2, that is, it covers the inner opening of all ducts 2 that connect to the first cavity, thereby guiding the hot airflow extracted by the first row of fans 10 through the first air inlet shroud 8, the first main shroud 6, and each first branch shroud 4 to the first cavity of each air outlet duct 3. Correspondingly, the second air inlet shroud 9 is connected to the second main shroud 7 and each second branch shroud 5, and guides the hot airflow extracted by the second row of fans 11 to the second cavity of each air outlet duct 3. The two air supply systems are spatially staggered on the inner wall of the heat dissipation panel 1, but remain completely independent in terms of fluid path.

[0027] During system operation, the first row of fans 10 and the second row of fans 11 alternately and periodically under the regulation of the control unit. When the first row of fans 10 is running while the second row of fans 11 is stopped or malfunctioning, the hot air inside the charging pile is forced into the first cavity of each air outlet duct 3 through the first set of air supply system. At this time, the air pressure in the first cavity rises rapidly due to the air supply. Since the root of the elastic valve 301 is anchored to the heat dissipation panel 1, the high-pressure airflow forces the elastic valve 301 to bulge towards the low-pressure side (i.e., towards the second cavity). This bulging deformation further reduces the flow volume of the second cavity, causing the second cavity to tend to close at the end opening of the air outlet duct 3, thereby effectively blocking external cold air, water vapor, or dust from flowing back into the cabinet through the path of the second set of air supply system. The passive adaptive backflow prevention effect is achieved by utilizing the fluid pressure difference. On the other hand, since the effective cross-sectional area of ​​the first cavity dynamically shrinks due to the movement of the elastic valve 301, the discharged hot airflow exhibits a higher outlet pressure and flow rate, which can more effectively disperse the stagnant air on the outside of the heat dissipation panel 1.

[0028] When the control unit switches to the second row fan 11 operating while the first row fan 10 stops, airflow enters the second cavity, and the elastic valve 301 expands upward under pressure. At this time, the first cavity closes to suppress backflow, and the hot air is ejected at high speed from the lower opening of the exhaust duct 3. Through this cyclical alternation, the elastic valve 301 generates a controllable reciprocating oscillation within the exhaust duct 3. This mechanical oscillation not only prevents dust from accumulating inside the exhaust duct 3, but more importantly, it causes a continuous dynamic change in the direction of the exhaust airflow outside the heat dissipation panel 1 in the vertical plane. This alternating disturbance of the airflow direction can significantly increase the turbulence of the fluid outside the heat dissipation panel 1, effectively disrupting the stable thermal boundary layer caused by temperature difference, and greatly improving the convective heat transfer capacity of the surface of the heat dissipation panel 1.

[0029] This invention utilizes this structural coupling method to achieve adaptive switching of the flow channel by using the fluid's own pressure to drive the elastic partition wall, without introducing electromagnetically driven valves or mechanical linkage structures. This design simplifies the system composition, reduces potential failure points, and solves the problem of limited heat exchange efficiency in traditional constant air supply modes by utilizing the disturbed airflow organization generated by dynamic deformation. It can effectively meet the heat dissipation stability requirements of charging piles in high-load outdoor environments.

[0030] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A heat dissipation structure for a charging pile, characterized in that, include: A heat dissipation panel (1) is provided with multiple conduits (2) and multiple air outlets (3). The conduits (2) are arranged in pairs and symmetrically arranged at the upper and lower ends of the air outlets (3). The conduits (2) pass through the outside of the heat dissipation panel (1) to the inside of the heat dissipation panel (1). Each of the air outlet ducts (3) is provided with an elastic valve (301). One end of the elastic valve (301) is fixed to the outer surface of the heat dissipation panel (1). The elastic valve (301) divides the internal cavity of the air outlet duct (3) into a first cavity located above and a second cavity located below. The elastic valve (301) can expand after being subjected to force and elastically return to its original position after the external force is removed. In the two conduits (2) in a group, one conduit (2) connects the first cavity to the interior of the heat dissipation panel (1), and the other conduit (2) connects the second cavity to the interior of the heat dissipation panel (1); The inner wall of the heat dissipation panel (1) is provided with two sets of air supply systems that are not connected to each other. The first set of air supply systems is used to supply air to each of the first cavities, and the second set of air supply systems is used to supply air to each of the second cavities.

2. The heat dissipation structure of a charging pile according to claim 1, characterized in that: The first air supply system includes a first branch cover (4), a first main cover (6) and a first air inlet cover (8) disposed on the inner wall of the heat dissipation panel (1). Each of the first branch covers (4) is respectively covered on the through end of the duct (2) that connects to the first cavity, and each of the first branch covers (4) is connected to the first main cover (6), and the first main cover (6) is connected to the first air inlet cover (8).

3. The heat dissipation structure of a charging pile according to claim 2, characterized in that: The second air supply system includes a second branch cover (5), a second main cover (7), and a second air inlet cover (9) disposed on the inner wall of the heat dissipation panel (1); Each of the second branch covers (5) is respectively covered on the through end of the conduit (2) that connects to the second cavity, and each of the second branch covers (5) is connected to the second main cover (7), and the second main cover (7) is connected to the second air inlet cover (9).

4. The heat dissipation structure of a charging pile according to claim 3, characterized in that: The first air intake shroud (8) is provided with a first row of fans (10), and the second air intake shroud (9) is provided with a second row of fans (11). The first row of fans (10) and the second row of fans (11) are controlled to operate alternately.

5. The heat dissipation structure of a charging pile according to claim 1, characterized in that: The air outlet (3) has a square box-shaped structure. One end of the air outlet (3) is fixed to the outer surface of the heat dissipation panel (1) and blocked by the heat dissipation panel (1). The end of the air outlet (3) away from the heat dissipation panel (1) is open.

6. The heat dissipation structure of a charging pile according to claim 5, characterized in that: The other end of the elastic valve (301) extends away from the heat dissipation panel (1) and extends to the opening of the air outlet (3), thereby dividing the opening of the air outlet (3) into two.

7. The heat dissipation structure of a charging pile according to claim 1, characterized in that: Both the first cavity and the second cavity are wide and flat when the elastic valve (301) is not under stress.

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