Air-cooling dustproof heat dissipation system and charging pile

Abstract

The invention provides an air-cooling dustproof heat dissipation system and a charging pile, and belongs to the technical field of high-power charging piles, and the air-cooling dustproof heat dissipation system comprises a filter element module which comprises a first filter element; an air inlet of the active air supply element is connected with the air outlet side of the first filter element, the active air supply element and the air outlet side of the first filter element are kept sealed, and the active air supply element is arranged to actively suck filtered air on the air outlet side of the first filter element, pressurize the air and output the air; the air conditioner has the beneficial effects that the active air supply element can actively form negative pressure on the air outlet side of the first filter element, and the air resistance increased due to the existence of the filter elements is overcome, so that sufficient air volume is ensured.

Description

Technical Field

[0001] This invention belongs to the field of high-power charging pile technology, and relates to an air-cooled dustproof heat dissipation system and a charging pile. Background Technology

[0002] With the rapid development of the electric vehicle market, charging stations, as its infrastructure, are becoming increasingly widespread. However, in practical applications of charging stations, especially in harsh outdoor environments with high dust levels, heat dissipation and dust prevention have become key factors affecting the stability and lifespan of charging stations. Traditional charging stations typically employ passive air-cooling systems, relying on natural ventilation or simple fans to promote airflow for cooling. During prolonged operation, this design easily attracts large amounts of dust, pollen, and other impurities. These impurities gradually clog the cooling airflow, leading to a sharp decline in heat dissipation efficiency and potentially causing overheating and damage to the power modules.

[0003] To reduce the impact of dust and other impurities on the internal components of charging stations, many charging stations currently use different types of filter materials, such as ordinary dustproof cotton. However, these filters often require frequent manual cleaning or replacement, increasing maintenance costs. Furthermore, they offer limited protection and cannot effectively block fine particulate matter, leaving the charging station's interior still at risk of contamination.

[0004] Based on the above, most existing heat dissipation solutions tend to use larger filter areas or thicker filter layers to improve dustproof performance. However, this also increases airflow resistance, reduces airflow, and thus weakens the heat dissipation effect. Especially in harsh environments, such as mining areas, although using filter cotton thickened to 10cm can enhance dustproof capabilities, it also introduces higher airflow resistance. In summary, although thicker filter layers improve dustproof performance, excessive airflow resistance leads to severely insufficient airflow into the air-cooled module. More seriously, as dust accumulates on the filter element, airflow resistance further increases, triggering a vicious cycle of continuously decreasing airflow, ultimately causing the heat dissipation system to fail. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing an air-cooled dustproof heat dissipation system and a charging pile.

[0006] The objective of this invention can be achieved through the following technical solution: a wind-cooled dustproof heat dissipation system, comprising:

[0007] Filter module, the filter module including a first filter element;

[0008] An active air supply element is provided, wherein the air inlet of the active air supply element is connected to the air outlet side of the first filter element and the two are kept sealed. The active air supply element is configured to actively draw in filtered air from the air outlet side of the first filter element, pressurize it, and then output it.

[0009] Preferably, the filter module further includes a second filter element, wherein the first filter element is disposed within the second filter element to form a double-layer filter element structure, and the pore diameter of the first filter element is smaller than the pore diameter of the second filter element.

[0010] Preferably, the active air supply element is a centrifugal blower or a high-pressure axial flow fan, and / or the second filter element is a metal mesh filter element, and the first filter element is an automotive-grade air filter element or a paper filter element.

[0011] Preferably, it also includes a flange, through which the air inlet of the active air supply element is detachably connected to the air outlet side of the first filter element.

[0012] Preferably, it also includes an air-cooling module, which is configured to receive air that has been pressurized and output by the active air supply element.

[0013] Preferably, it also includes a control element, which is electrically connected to the active air supply element. The air-cooling module is equipped with a temperature sensor or the filter module is equipped with a differential pressure sensor. The temperature sensor or the differential pressure sensor is electrically connected to the control element. The control element is configured to control the output power of the active air supply element according to the temperature of the air-cooling module or the internal and external pressure difference of the filter module.

[0014] A charging pile includes the aforementioned air-cooled dustproof and heat dissipation system, and also includes a cabinet. The cabinet has an air inlet chamber, an air guide channel, and an air-cooling chamber inside. A filter module and an active air supply element are installed in the air inlet chamber, and an air-cooling module is installed in the air-cooling chamber. The air outlet of the active air supply element is connected to the air inlet surface of the air-cooling module through the air guide channel.

[0015] Preferably, the cabinet also has an exhaust chamber, the exhaust surface of the air-cooling module is connected to the exhaust chamber, the exhaust chamber and the air guide channel are located on opposite sides of the cabinet, the cabinet has an exhaust port on the side wall corresponding to the exhaust chamber, the exhaust port is arranged opposite to the exhaust surface of the air-cooling module, the exhaust chamber is equipped with an exhaust fan, and the exhaust fan is connected to the exhaust port.

[0016] Preferably, the cabinet has an air inlet on the side wall corresponding to the air inlet chamber, and the air inlet and the air outlet are located on different sides of the cabinet.

[0017] Preferably, the cabinet includes a cabinet door, and the cabinet has an inner panel structure inside, with the cabinet door forming the air guide channel between the cabinet door and the inner panel structure when closed.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By forming a double-layer structure with the first filter element, the impurities in the air are classified and treated, which greatly improves the dust filtration performance. The active air supply element can actively create negative pressure on the air outlet side of the first filter element, overcoming the increased wind resistance caused by the presence of the filter element, thereby ensuring sufficient air volume.

[0020] 2. Although the filter module has high filtration efficiency, it will bring significant airflow resistance (pressure drop). Under such high back pressure, the air volume of traditional axial fans will decrease sharply, and they cannot guarantee the air flow required for heat dissipation. Centrifugal blowers have high static pressure output capability and can provide stable, high-pressure airflow to overcome the air resistance brought by the double-layer filter.

[0021] 3. Using automotive-grade air filters as the primary filter is not merely an upgrade in material selection, but also a transfer of mature and reliable technology from automotive engine intake systems to the charging pile field. This fundamentally improves the dustproof capabilities, operational reliability, and maintenance-free level of outdoor power electronic equipment in harsh environments, aligning with the high availability development requirements of new energy infrastructure. Furthermore, the mature and highly reliable dual-stage filtration technology derived from automotive engine intake systems is deeply coupled with the active air delivery mechanism of a high static pressure centrifugal blower, and engineering-adapted to the heat dissipation requirements of electric vehicle charging pile power modules, resulting in a highly efficient and reliable air-cooled dustproof heat dissipation system. Attached Figure Description

[0022] Figure 1 This is a longitudinal cross-sectional view of the charging pile of the present invention.

[0023] Figure 2 This is a schematic diagram of the internal air-cooled dustproof heat dissipation system of the charging pile of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the charging pile of the present invention.

[0025] Figure 4 This is a schematic diagram of the cabinet door and air duct of the charging pile of the present invention.

[0026] Figure 5 This is a cross-sectional view of the charging pile of the present invention.

[0027] In the diagram, 100 is the filter module; 110 is the second filter; 120 is the first filter; 200 is the active air supply element; 300 is the air-cooled module; 400 is the cabinet; 410 is the air inlet chamber; 411 is the air inlet; 420 is the air guide channel; 421 is the air-cooled chamber; 430 is the exhaust chamber; 431 is the exhaust vent; 440 is the exhaust fan; and 450 is the cabinet door. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figures 1 to 5 As shown, a wind-cooled dustproof heat dissipation system for charging piles includes:

[0030] Filter module 100, which includes a first filter element 120;

[0031] The active air supply element 200 has an air inlet 411 connected to the air outlet side of the first filter element 120 and the two are kept sealed. The active air supply element 200 is configured to actively draw in filtered air from the air outlet side of the first filter element 120 and pressurize it before outputting it.

[0032] It is important to note here that the filter module 100 has a double-layer filter structure or a thickened filter layer structure. Due to the high filtration accuracy of the filter module 100, it has the characteristic of high pressure drop. Simply put, compared with existing filters, the filter module 100 can improve the filtration capacity through a thicker filter layer or more filter layers. However, the filter module 100 has the characteristic of large air resistance. Based on this characteristic, an active air supply element 200 is specially set. The active air supply element 200 actively and continuously draws air from the air outlet side of the first filter 120, thereby overcoming the air resistance of the filter module 100 by actively drawing air from it. Then, the air filtered by the filter module 100 is pressurized and delivered to the air-cooled module 300.

[0033] Therefore, even though the filter module 100 has a large air resistance, the entire system can still ensure sufficient air intake; and even if dust accumulates on the filter, it will not cause the system's air intake to be too low, ensuring that the heat dissipation system will not fail due to the excessive air resistance of the filter module 100.

[0034] Based on the above embodiments, the filter module 100 further includes a second filter element 110, and a first filter element 120 is disposed within the second filter element 110 to form a double-layer filter structure. The pore size of the first filter element 120 is smaller than that of the second filter element 110. This allows the airflow to pass sequentially through the filter layer of the coarse filter element (110), the gap between the coarse filter element (110) and the fine filter element (120), and the filter layer of the fine filter element (120) when passing through the filter module (100).

[0035] The filter module 100 is the core of the entire dustproof system. In this embodiment, the filter module 100 adopts a two-stage filtration structure, with a coarse filter followed by a fine filter. The second filter element 110 is used to intercept large particulate impurities, such as leaves, insects, willow catkins, and sand. The second filter element 110 is preferably made of metal mesh, nylon mesh, or open-cell foam, featuring high throughput, low air resistance, and washability for reusability. This protects the downstream first filter element 120 from rapid clogging by large particles, extending its overall service life. The first filter element 120 is used to filter fine particles. The pore size of the first filter element 120 is smaller than that of the second filter element 110, meaning higher filtration accuracy. The first filter element 120 is installed like an inner liner inside the cavity of the second filter element 110. Air first passes through the second filter element 110 before entering the first filter element 120.

[0036] In one embodiment, the second filter element 110 is configured as a single-opening cylindrical structure, and the first filter element 120 is also configured as a single-opening cylindrical structure. The first filter element 120 is inserted into the second filter element 110 through the opening. Preferably, the opening of the second filter element 110 is sealed to the outer wall of the first filter element 120, that is, the first filter element 120 completely seals the opening of the second filter element 110, forming a sealed cavity inside the second filter element 110. The opening (air outlet side) of the first filter element 120 is connected to the active air supply element 200. Based on this structure, outside air cannot directly enter the interior of the first filter element 120, but can only enter the interior of the second filter element 110 first. Under the action of negative pressure, the air inside the first filter element 120 is drawn out, and this air enters the centrifugal blower from the air outlet side after entering the interior of the first filter element 120.

[0037] In addition to the aforementioned double-layer filter structure, the filter module 100 can also be configured as a thickened filter structure, that is, the first filter element 120 uses filter cotton with a thickness of at least 10 cm, which can also achieve sufficient filtration accuracy.

[0038] The active air supply element 200 is a centrifugal blower or a high-pressure axial flow fan. The active air supply element 200 is used to solve the problem of excessive wind resistance caused by the filter module 100, thereby ensuring sufficient air intake. The active air supply element 200 is preferably a centrifugal blower. The centrifugal blower draws air from behind the first filter element 120, thereby creating a negative pressure on the air outlet side of the first filter element 120. This forces external air to pass through the second filter element 110 and the first filter element 120 in sequence. The centrifugal blower can not only draw in air, but also pressurize and deliver clean air to overcome subsequent resistance and ensure sufficient air volume reaches the heating module.

[0039] It should be noted that centrifugal blowers and high-pressure axial flow blowers operate on different principles, as follows:

[0040] The working principle of a centrifugal blower is to use a high-speed rotating impeller (usually with backward- or forward-curved blades) to do work on the gas. Air enters axially from the center of the impeller and is thrown towards the outer edge of the impeller under the action of centrifugal force, flowing out radially. In this process, the gas gains kinetic energy, and some of the kinetic energy is converted into static pressure in the volute. Therefore, centrifugal blowers are suitable for overcoming high-resistance systems.

[0041] The working principle of a high-pressure axial flow fan is to use rotating propeller blades to push air to flow axially. The blades exert thrust on the air, causing it to accelerate along the fan axis.

[0042] Because centrifugal blowers have the characteristic of high static pressure, centrifugal blowers are preferred in this example because they can efficiently establish a stable negative pressure after the first filter element 120 and can overcome the wind resistance brought by the filter element module 100.

[0043] While the filter module 100 has high filtration efficiency, it introduces significant airflow resistance (pressure drop), causing a sharp decrease in airflow and making it impossible to guarantee the airflow required for heat dissipation. The centrifugal blower, with its high static pressure output capability, can provide stable, high-pressure airflow, overcoming the air resistance caused by the double-layer filter.

[0044] The system works as follows: Ambient air enters through the system's air inlet 411. Due to the negative pressure created by the active air supply element 200 on the outlet side of the first filter element 120, the air first passes through the second filter element 110 to remove large particles. The air entering the second filter element 110 then passes through the first filter element 120 to remove fine dust, resulting in clean air. After being filtered twice, the air is drawn into the active air supply element 200 for pressurization, and then transported through the duct to the power module heat sink inside the charging pile. The cool air flows through the heat-generating devices or heat sinks, carrying away heat.

[0045] The second filter element 110 and the first filter element 120 form a double-layer structure to classify and process impurities in the air, which greatly improves the dust filtration performance. The active air supply element 200 can actively create negative pressure on the air outlet side of the first filter element 120 to overcome the increased wind resistance caused by the presence of the filter element, thereby ensuring sufficient air volume.

[0046] Preferably, the second filter element 110 is a metal mesh filter element, and the first filter element 120 is an automotive-grade air filter element or a paper filter element. Among them, the automotive-grade air filter element has ultra-high filtration efficiency, and the multi-layer composite filter material forms a dense but breathable microporous structure, which takes into account both high dust holding capacity and low initial pressure drop. Moreover, it has excellent environmental tolerance and can work stably for a long time in environments ranging from -40℃ to 120℃, which meets the deployment needs of charging piles in extremely cold and hot regions.

[0047] Most importantly, automotive-grade air filters have undergone rigorous testing and are mature filters. Their performance consistency and batch stability are far superior to non-standard industrial filters. Using automotive-grade air filters as the primary filter in the 120 system is not only an upgrade in material selection, but also a transfer of mature and reliable technology from automotive engine intake systems to the charging pile field. This fundamentally improves the dustproof capabilities, operational reliability, and maintenance-free level of outdoor power electronic equipment in harsh environments, meeting the high availability development requirements of new energy infrastructure. Furthermore, by deeply coupling the mature and highly reliable dual-stage filtration technology derived from automotive engine intake systems with the active air delivery mechanism of a high static pressure centrifugal blower, and engineering adaptations for the heat dissipation requirements of electric vehicle charging pile power modules, a high-efficiency and high-reliability air-cooled dustproof heat dissipation system has been constructed.

[0048] Based on the above embodiments, a flange is also included, and the air inlet 411 of the active air supply element 200 is detachably connected to the air outlet side of the first filter element 120 through the flange.

[0049] The flange is used to detachably and sealably connect the air inlet 411 of the active air supply element 200 to the air outlet side of the first filter element 120. This design facilitates quick disassembly for filter element replacement during maintenance, improving on-site maintenance efficiency. Simultaneously, the flange connection ensures the airtightness of the airflow channel, preventing unfiltered air from leaking into the duct from the interface, thus ensuring the dustproof reliability of the entire heat dissipation system.

[0050] like Figures 1 to 3 As shown, based on the above embodiment, it also includes an air-cooling module 300, which is configured to receive air that is pressurized and output by the active air supply element 200.

[0051] The air-cooled module 300, as the core thermal management unit inside the charging pile, is mainly used for forced air cooling of power devices (such as IGBTs, rectifier bridges, DC-DC converters, etc.). This air-cooled module 300 is positioned downstream of the airflow path, directly receiving clean air pressurized and output by the active air supply element 200, and using this airflow to efficiently remove the heat generated during device operation. Specifically, the air-cooled module 300 has densely arranged metal heat dissipation fins (such as aluminum or copper), with the power devices closely attached to or embedded within them. High-speed airflow passes through the gaps between the fins, rapidly carrying away heat through convection heat transfer. Furthermore, the air that has absorbed heat (i.e., waste heat) is discharged from the exhaust surface at the rear of the air-cooled module 300 to the exhaust chamber 430 and guided to the outside through the exhaust port 431, forming a unidirectional, irreversible cooling airflow path to prevent hot air recirculation.

[0052] Based on the above embodiments, a control element is also included. The control element is electrically connected to the active air supply element 200. The air-cooled module 300 is equipped with a temperature sensor or the filter module 100 is equipped with a differential pressure sensor. The temperature sensor or differential pressure sensor is electrically connected to the control element. The control element is configured to control the output power of the active air supply element 200 according to the temperature of the air-cooled module 300 or the internal and external pressure difference of the filter module 100.

[0053] Control elements (such as microcontrollers or PLCs) and active air supply elements 200 are used to dynamically adjust the operating status of the fan. A temperature sensor is installed on the air-cooled module 300 to monitor its temperature in real time, and / or pressure taps are installed on the inlet and outlet sides of the filter module 100, connected to differential pressure sensors to detect the pressure difference across the filter. Both the temperature sensor and / or the differential pressure sensor are electrically connected to the control elements, transmitting the collected signals to the control unit in real time. The control elements have built-in control logic to dynamically adjust the output power of the active air supply elements 200 (e.g., by adjusting the fan supply voltage or PWM duty cycle to achieve speed control).

[0054] Specifically, when the charging pile load increases and the power module temperature rises, the control element automatically increases the speed of the active air supply element 200 to increase the cooling airflow and accelerate heat dissipation. When the temperature drops back to a safe range, the speed is reduced to decrease energy consumption and noise. Alternatively, as the usage time increases, dust gradually accumulates on the filter module 100, causing an increase in the pressure difference between the inlet and outlet. The pressure difference sensor monitors this change in real time. When the pressure difference exceeds the set upper limit, it indicates that the filter is severely clogged. The control element automatically increases the speed of the active air supply element 200 to compensate for wind resistance loss and maintain basic heat dissipation airflow. The control element can also send a filter replacement alarm.

[0055] like Figures 1 to 5 As shown, a charging pile includes a wind-cooled dustproof and heat dissipation system, and also includes a cabinet 400. The cabinet 400 has an air inlet chamber 410, an air guide channel 420 and a wind-cooling chamber 421 inside. The filter module 100 and the active air supply element 200 are installed in the air inlet chamber 410, and the wind-cooling module 300 is installed in the wind-cooling chamber 421. The air outlet of the active air supply element 200 is connected to the air inlet surface of the wind-cooling module 300 through the air guide channel 420.

[0056] The air inlet chamber 410 is used to complete the secondary filtration and preliminary pressurization of ambient air. The air inlet chamber 410 is physically isolated from other chambers to ensure that unfiltered air cannot bypass the filter module 100 and directly enter the interior. The air guide duct 420 can deliver the pressurized clean air to the air-cooled chamber 421. The air guide duct 420 can be an independent air duct, a closed air duct formed by sheet metal bending, or a sealed space enclosed by the inner panel of the cabinet 400 and the cabinet door 450. The air-cooled chamber 421 is used to install the air-cooled module 300. Clean, cold air enters the air inlet surface of the air-cooled module 300 from the air guide duct 420, is forced to flow through the heat dissipation fins, absorbs heat, and becomes hot air.

[0057] The charging pile cabinet 400 is functionally divided into independent air inlet chambers 410, air ducts 420, and air-cooling chambers 421. Components are deployed in their respective chambers according to the airflow path. The filter module 100 and centrifugal blower are integrated in the air inlet chamber 410, while the air-cooling module 300 is located in the air-cooling chamber 421. The two are connected by the air duct 420. This layout ensures that external air entering the system undergoes filtration, pressurization, and forced cooling sequentially, maintaining a controlled, unidirectional, and non-bypass flow throughout. This effectively prevents cross-interference between unfiltered air and hot exhaust gases, ensuring the cleanliness and cooling efficiency of the airflow. Furthermore, the clear positioning of each functional module facilitates assembly, maintenance, and component replacement.

[0058] Based on the above implementation, the cabinet 400 also has an exhaust chamber 430 inside, the exhaust surface of the air-cooled module 300 is connected to the exhaust chamber 430, the exhaust chamber 430 and the air guide channel 420 are respectively located on opposite sides of the cabinet 400, the cabinet 400 has an exhaust port 431 on the side wall of the corresponding exhaust chamber 430, the exhaust port 431 is arranged opposite to the exhaust surface of the air-cooled module 300, the exhaust chamber 430 is equipped with an exhaust fan 440, and the exhaust fan 440 is connected to the exhaust port 431.

[0059] The exhaust surface (i.e., the hot air outlet end) of the air-cooled module 300 is directly connected to the exhaust chamber 430, allowing the high-temperature airflow after heat absorption to smoothly enter the exhaust chamber 430, preventing it from stagnating in the air-cooled chamber 421 or flowing back to other electrical areas. The cabinet 400 has an exhaust port 431 on the side wall corresponding to the exhaust chamber 430. This exhaust port 431 is directly opposite the exhaust surface of the air-cooled module 300 along the airflow direction, forming a low-resistance, straight hot air exhaust path, reducing eddies and pressure loss. An exhaust fan 440 is installed inside the exhaust chamber 430, and its outlet is tightly connected to the exhaust port 431 on the side wall of the cabinet 400. During system operation, the exhaust fan 440 actively forces the hot air in the exhaust chamber 430 to the external environment, significantly enhancing the overall heat exchange capacity, especially under conditions of high ambient temperature, insufficient natural convection, or high load on the charging pile.

[0060] Based on the above implementation, the cabinet 400 has an air inlet 411 on the side wall corresponding to the air inlet chamber 410, and the air inlet 411 and the exhaust outlet 431 are located on different sides of the cabinet 400. It should be noted that if the air inlet 411 and the exhaust outlet 431 are located on the same side or adjacent to each other, it is possible that the high-temperature exhaust gas that has just been discharged may be re-drawn into the air inlet 411, thereby reducing the air cooling efficiency.

[0061] Based on the above implementation, the cabinet 400 includes a cabinet door 450, and an inner panel structure is provided inside the cabinet 400. When the cabinet door 450 is closed, an air guide channel 420 is formed between it and the inner panel structure. This design cleverly utilizes the structural components of the cabinet 400 itself to construct the air guide channel 420. When the cabinet door 450 is closed, the air guide channel 420 is formed; when the cabinet door 450 is opened, the air duct and internal modules are exposed, facilitating maintenance or repair.

[0062] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0063] Furthermore, in this invention, descriptions involving "first," "second," "a," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction between two elements, unless otherwise explicitly limited.

[0065] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A dust-proof and heat-dissipating system with air cooling, characterized in that, Comprising: a filter element module (100) comprising a first filter element (120); a forced air supply element (200) whose air inlet (411) is connected to the air outlet side of the first filter element (120) and both are sealed, the forced air supply element (200) is arranged to actively suck filtered air from the air outlet side of the first filter element (120) and output it after pressurization.

2. The air-cooled dustproof heat dissipation system according to claim 1, characterized in that: The filter element module (100) further comprises a second filter element (110), the first filter element (120) is arranged in the second filter element (110) to form a double-layer filter element structure, the pore size of the filter hole on the first filter element (120) is smaller than that of the second filter element (110).

3. The air-cooled dustproof heat dissipation system according to claim 1 or 2, characterized in that: The forced air supply element (200) is arranged as a centrifugal blower or a high-pressure axial flow fan, and / or the second filter element (110) is arranged as a metal mesh filter element, and / or the first filter element (120) is arranged as a vehicle-grade air filter element or a paper filter element.

4. The air-cooled dustproof heat dissipation system according to claim 1, wherein: Further comprising a flange, the air inlet (411) of the forced air supply element (200) is detachably connected to the air outlet side of the first filter element (120) through the flange.

5. The air-cooled dustproof heat dissipation system according to claim 1, wherein: Further comprising an air cooling module (300) arranged to receive the air output after pressurization by the forced air supply element (200).

6. The air-cooled dustproof heat dissipation system according to claim 5, characterized in that: Further comprising a control element electrically connected to the forced air supply element (200), the air cooling module (300) is provided with a temperature sensor or the filter element module (100) is provided with a differential pressure sensor, the temperature sensor or the differential pressure sensor is electrically connected to the control element, and the control element is arranged to control the output power of the forced air supply element (200) according to the temperature of the air cooling module (300) or the internal and external differential pressure of the filter element module (100).

7. A charging post, characterized in that, Comprising the air cooling dust-proof cooling system according to any one of claims 1 to 6, further comprising a cabinet (400), the cabinet (400) has an air inlet chamber (410), an air guide channel (420) and an air cooling chamber (421) inside, the filter element module (100) and the forced air supply element (200) are installed in the air inlet chamber (410), the air cooling module (300) is installed in the air cooling chamber (421), and the air outlet of the forced air supply element (200) is communicated with the air inlet of the air cooling module (300) through the air guide channel (420).

8. The charging station of claim 7, wherein: The cabinet (400) further has an air outlet chamber (430) inside, the air outlet surface of the air cooling module (300) is communicated with the air outlet chamber (430), the air outlet chamber (430) and the air guide channel (420) are respectively located on opposite sides of the cabinet (400), the cabinet (400) is provided with an air outlet (431) on the side wall corresponding to the air outlet chamber (430), the air outlet (431) is arranged opposite to the air outlet surface of the air cooling module (300), and the air outlet chamber (430) is provided with an air outlet fan (440) which is in butt joint with the air outlet (431).

9. The charging station of claim 8, wherein: The cabinet (400) is provided with an air inlet (411) on the side wall corresponding to the air inlet chamber (410), and the air inlet (411) and the air outlet (431) are located on different sides of the cabinet (400).

10. The charging station of claim 7, wherein: The cabinet (400) comprises a cabinet door (450), and an inner plate structure is arranged in the cabinet (400). When the cabinet door (450) is closed, the cabinet door (450) and the inner plate structure form the air guide channel (420).

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