Direct current charging pile

Abstract

The application relates to a direct-current charging pile which comprises a bottom shell, a top cover, two air duct plates, a main plate and a heat dissipation fan, the bottom shell is provided with air inlets on both sides, and the bottom shell is provided with an air outlet at one end; the top cover is arranged at the end of the bottom shell far from the air outlet, the inner cavity of the top cover and the inner cavity of the bottom shell surround to form a pile body inner cavity; the two air duct plates are arranged in the pile body inner cavity, and the air duct plates are arranged in correspondence with the air inlets; a plurality of components are arranged on the main plate, the main plate is located between the two air duct plates, the air duct plates, the end of the main plate far from the air outlet and the pile body inner cavity surround to form a heat dissipation air duct, and the end of the air duct plate close to the air outlet and the inner wall of the bottom shell surround to form a water drainage part in communication with the air inlets; the heat dissipation fan is arranged at the end of the main plate far from the air outlet, and the heat dissipation fan is used for sucking external air into the heat dissipation air duct and discharging hot air from the air outlet out of the pile body inner cavity. The direct-current charging pile of the application improves the waterproof effect while ensuring the heat dissipation performance through the arrangement of the heat dissipation air duct.

Description

Technical Field

[0001] This application relates to the field of vehicle charging technology, and in particular to DC charging piles. Background Technology

[0002] Charging stations, as a crucial infrastructure for electric vehicles, are mainly divided into two types: AC charging stations and DC charging stations, to meet the charging needs of different users. AC charging stations do not have an internal power conversion module, generate less heat, and generally do not require additional heat dissipation devices or structures, allowing for good sealing and protection. However, DC charging stations contain a power conversion module, generate more heat, and require effective cooling systems.

[0003] In related technologies, DC piles are designed with internal heat dissipation ducts to ensure heat dissipation. However, the design of the heat dissipation ducts will greatly reduce the protection of the pile body, especially small DC piles. In order to pursue small size and compact internal components, it is difficult to achieve a high protection effect, which leads to safety risks for DC piles in rainy weather or when they are hit by water. Utility Model Content

[0004] Therefore, it is necessary to provide a DC charging pile to address the problem of low protection performance of DC charging piles in the aforementioned related technologies.

[0005] This application provides a DC charging pile, including:

[0006] The bottom shell has air inlets on both sides and an air outlet at one end.

[0007] The top cover is located at the end of the bottom shell away from the air outlet, and the inner cavity of the top cover and the inner cavity of the bottom shell enclose the inner cavity of the pile body.

[0008] Two air duct plates are installed inside the pile body cavity, with each air duct plate corresponding to and opposite to the air inlet;

[0009] The main board is located inside the pile body cavity. The main board has multiple components. The main board is located between two air duct plates. The air duct plates, the end of the main board away from the air outlet, and the cavity wall of the pile body cavity away from the air outlet form a heat dissipation air duct. The end of the air duct plate near the air outlet and the inner wall of the bottom shell form a water-draining part that is opposite to and connected to the air inlet.

[0010] The cooling fan is located at the end of the motherboard away from the air outlet. The cooling fan is used to draw outside air into the cooling air duct to dissipate heat from the components on the motherboard and to expel the hot air from the air outlet into the internal cavity of the pile.

[0011] In one embodiment, the duct plate includes:

[0012] The vertical part is connected at one end to the end of the motherboard furthest from the air outlet.

[0013] The inclined part is connected at one end to the end of the vertical part near the air outlet, and the other end of the inclined part extends inclinedly toward the air inlet.

[0014] The extension is connected at one end to the inclined part away from the vertical part, and at the other end to the inner wall of the bottom shell. The extension, the inclined part and the inner wall of the bottom shell near the air inlet form a water-repellent part.

[0015] In one embodiment, a top plate extends horizontally from the end of the motherboard away from the air outlet. The side of the top plate away from the motherboard is connected to the inner wall of the bottom shell. The two ends of the top plate are respectively connected to the end of the adjacent vertical part away from the air outlet. A ventilation opening opposite to the air outlet is provided through the top plate. A cooling fan is installed on the top plate and is located above the ventilation opening.

[0016] In one embodiment, dustproof components are provided on the side wall of the bottom shell located on the side of the air inlet and on the side wall of the bottom shell located on the side of the air outlet. The dustproof component near the air inlet is arranged opposite to the air inlet, and the dustproof component near the air outlet is arranged opposite to the air outlet.

[0017] In one embodiment, the inner wall of the bottom shell is provided with a mounting portion opposite to the air inlet, and the dustproof component includes dustproof cotton, which is disposed in the mounting portion and located above the extension portion.

[0018] In one embodiment, an air guide box is also included. The air guide box is disposed at one end of the bottom shell located at the air outlet. The air guide box is connected to the air outlet, and an exhaust port is provided at the end of the air guide box away from the air outlet.

[0019] In one embodiment, the air guide box has multiple heat dissipation holes on one or more side walls.

[0020] In one embodiment, the air guide box is provided with a dustproof component that protects the heat dissipation holes and exhaust vents from dust.

[0021] In one embodiment, the dustproof component includes:

[0022] The filter cotton is positioned opposite the exhaust vent and heat dissipation holes;

[0023] The fixing component is located inside the air guide box and is used to limit the filter cotton inside the air guide box.

[0024] In one embodiment, the fastener includes:

[0025] The fixed mesh frame has one end detachably connected to the inner wall of the air guide box, and the other end extends horizontally to the top of the exhaust port. The fixed mesh frame and the inner wall of the air guide box form a slot, and the filter cotton is inserted into the slot.

[0026] The aforementioned DC charging pile includes a bottom shell, a top cover, two air duct plates, a main board, and a cooling fan. Air inlets are located on both sides of the bottom shell, and an air outlet is located at one end. The top cover is located at the end of the bottom shell furthest from the air outlet, and its inner cavity, together with the inner cavity of the bottom shell, forms the inner cavity of the charging pile. The two air duct plates are located within the inner cavity of the charging pile, corresponding one-to-one with the air inlets and positioned opposite each other. The main board is located within the inner cavity of the charging pile, and it houses multiple components. The main board is situated between the two air duct plates, and the air duct plates, the end of the main board furthest from the air outlet, and the cavity wall of the inner cavity furthest from the air outlet form a cooling air duct. The end of the air duct plate closest to the air outlet, together with the inner wall of the bottom shell, forms a hydrophobic section that is opposite to and connected to the air inlet. The cooling fan is located at the end of the main board furthest from the air outlet. The cooling fan draws outside air into the cooling air duct to dissipate heat from the components on the main board and exhausts the hot air from the air outlet into the inner cavity of the charging pile. The DC charging pile of this application forms a heat dissipation air duct through the cooperation of the air duct plate, main board, bottom shell, and top cover. Under the action of the cooling fan, outside air is drawn into the heat dissipation air duct to dissipate heat from the components on the main board, and the hot air is discharged from the air outlet into the internal cavity of the charging pile, thereby ensuring the heat dissipation performance of the DC charging pile. In addition, by placing the main board of the DC charging pile between the two heat dissipation channels, that is, placing the circuit part of the DC charging pile in the middle of the bottom shell, the protection performance is improved without affecting the heat dissipation and ventilation effect. Furthermore, the hydrophobic part formed by the enclosure between the end of the air duct plate near the air outlet and the inner wall of the bottom shell can discharge rainwater from the bottom shell when it enters the heat dissipation air duct from the air inlet, thereby providing a good protection effect for the DC charging pile. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a DC charging pile in some embodiments of this application;

[0029] Figure 2 This is a structural schematic diagram illustrating the connection relationship between the bottom shell, top cover, air duct plate and motherboard in some embodiments of this application;

[0030] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the heat dissipation duct, the heat dissipation fan, and the enclosure plate in some embodiments of this application;

[0031] Figure 4This is a structural diagram illustrating the positional relationship between the air inlet, heat dissipation duct, motherboard, cooling fan, and air outlet in some embodiments of this application;

[0032] Figure 5 This is a structural schematic diagram illustrating the connection relationship between the air duct plate, the mounting part and the dustproof component in some embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the mounting section in some embodiments of this application;

[0034] Figure 7 This is a schematic diagram of the air guide box in some embodiments of this application;

[0035] Figure 8 This is a structural schematic diagram illustrating the connection relationship between the fixed frame and the fixed space frame in some embodiments of this application.

[0036] Explanation of icon numbers:

[0037] 100. Bottom shell; 102. Air inlet; 104. Air outlet; 110. Dustproof cotton; 120. Mounting part; 122. Spacer frame; 124. Clamping plate; 130. Power cord; 140. Antenna; 150. Charging gun; 160. Mesh plate; 200. Top cover; 300. Air duct plate; 310. Vertical part; 320. Inclined part; 330. Extension part; 332. Drainage part; 340. Enclosure plate; 350. Heat dissipation air duct; 400. Mainboard; 410. Components; 420. Top plate; 500. Cooling fan; 600. Air guide box; 610. Exhaust vent; 620. Heat dissipation hole; 630. Dustproof component; 631. Filter cotton; 632. Fixing mesh frame; 633. Fixing frame; 634. Fixing plate; 635. Screws. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0040] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] Charging stations, as a crucial infrastructure for electric vehicles, are mainly divided into two types: AC charging stations and DC charging stations, to meet the charging needs of different users. AC charging stations do not have an internal power conversion module, generate less heat, and generally do not require additional heat dissipation devices or structures, allowing for good sealing and protection. However, DC charging stations contain a power conversion module, generate more heat, and require effective cooling systems.

[0045] In related technologies, DC piles are designed with internal heat dissipation ducts to ensure heat dissipation. However, the design of the heat dissipation ducts will greatly reduce the protection of the pile body, especially small DC piles. In order to pursue small size and compact internal components, it is difficult to achieve a high protection effect, which leads to safety risks for DC piles in rainy weather or when they are hit by water.

[0046] To address the issue of poor protective performance of DC piles in related technologies, referring to Figures 1 to 3 This application provides a DC charging pile, including a bottom shell 100, a top cover 200, two air duct plates 300, a main board 400, and a cooling fan 500. The bottom shell 100 has air inlets 102 on both sides and an air outlet 104 at one end. The top cover 200 is located at the end of the bottom shell 100 away from the air outlet 104, and the inner cavity of the top cover 200 and the inner cavity of the bottom shell 100 enclose the inner cavity of the charging pile. The two air duct plates 300 are disposed within the inner cavity of the charging pile, and the air duct plates 300 correspond one-to-one with and are opposite to the air inlets 102. The main board 400 is disposed within the inner cavity of the charging pile, and multiple components 410 are provided on the main board 400. 400 is located between two air duct plates 300. The air duct plate 300, the end of the main board 400 away from the air outlet 104, and the cavity wall of the pile body cavity away from the air outlet 104 form a heat dissipation air duct 350. The end of the air duct plate 300 near the air outlet 104 and the inner wall of the bottom shell 100 form a water-draining part 332 that is opposite to and connected to the air inlet 102. The cooling fan 500 is located at the end of the main board 400 away from the air outlet 104. The cooling fan 500 is used to draw outside air into the heat dissipation air duct 350 to dissipate heat from the components 410 on the main board 400 and to discharge the hot air from the air outlet 104 into the pile body cavity.

[0047] The bottom shell 100 is connected to the top cover 200 at its top. The inner cavities of the bottom shell 100 and the top cover 200 together form the inner cavity of the pile body. Air inlets 102 are located on two opposite side walls of the bottom shell 100, while air outlets 104 are located on the bottom wall of the bottom shell 100. A power cord 130, an antenna 140, and an interface for inserting a charging gun 150 are also connected to the bottom wall of the bottom shell 100. The side wall of the air duct plate 300 is connected to the inner wall of the bottom shell 100 to form a relatively enclosed heat dissipation air duct 350. The main board 400 is located on the inner side wall of the bottom shell 100, between the two air duct plates 300.

[0048] Specifically, a perforated plate 160 can be detachably connected to the outer wall of the bottom shell 100 located at the air inlet 102, so as to ensure that the external space can smoothly enter the heat dissipation air duct 350 while blocking larger debris, thereby playing a certain protective role for the inside of the pile.

[0049] In this embodiment, the DC charging pile forms a heat dissipation duct 350 through the cooperation of the air duct plate 300, main board 400, bottom shell 100, and top cover 200. Under the action of the cooling fan 500, outside air is drawn into the heat dissipation duct 350 to dissipate heat from the components 410 on the main board 400, and the hot air is discharged from the internal cavity of the charging pile through the air outlet 104, thereby ensuring the heat dissipation performance of the DC charging pile. In addition, by placing the main board 400 of the DC charging pile between two heat dissipation channels, that is, placing the circuit part of the DC charging pile in the middle of the bottom shell 100, the protection performance is improved without affecting the heat dissipation and ventilation. Furthermore, the hydrophobic part 332 formed by the end of the air duct plate 300 near the air outlet 104 and the inner wall of the bottom shell 100 can discharge rainwater from the bottom shell 100 when it enters the heat dissipation duct 350 through the air inlet 102, thereby providing a good protection effect for the DC charging pile.

[0050] Reference Figure 3 and Figure 4 In some embodiments, the air duct plate 300 includes a vertical portion 310, an inclined portion 320, and an extension portion 330. One end of the vertical portion 310 is connected to the end of the main board 400 away from the air outlet 104. One end of the inclined portion 320 is connected to the end of the vertical portion 310 near the air outlet 104, and the other end of the inclined portion 320 extends inclinedly toward the air inlet 102. One end of the extension portion 330 is connected to the end of the inclined portion 320 away from the vertical portion 310, and the other end of the extension portion 330 is connected to the inner wall of the bottom shell 100. The extension portion 330, the inclined portion 320, and the inner wall of the bottom shell 100 near the air inlet 102 enclose each other to form a water-draining portion 332.

[0051] The vertical portion 310 is vertically connected to the inner wall of the bottom shell 100 on the side of the main board 400. The inclined portion 320 is an inclined plate, which is inclined downward toward the air inlet 102 so that the drainage portion 332 formed by the extension portion 330 can drain smoothly. The inclined portion 320 can also be curved, as long as it does not affect the downward flow of water to the drainage portion 332. In this embodiment, the vertical portion 310, the inclined portion 320, and the extension portion 330 are integrally formed.

[0052] Specifically, when rainwater enters the heat dissipation duct 350 through the holes in the perforated plate 160, it accumulates on the side wall of the duct plate 300 and flows downward into the drainage section 332. Since the drainage section 332 is connected to the air inlet 102, the water in the heat dissipation duct 350 can be discharged from the pile body in time. Therefore, the design of the heat dissipation duct 350 can not only meet the heat dissipation requirements of the DC charging pile, but also play a role in waterproof protection for the DC charging pile.

[0053] In this embodiment, the vertical part 310, the inclined part 320 and the extension part 330 cooperate to form a heat dissipation duct 350 and a drainage part 332 for drainage, thereby helping to ensure that the heat dissipation requirements of the DC charging pile are met, while also providing waterproof protection for the various components 410 inside the DC charging pile.

[0054] Reference Figure 2 and Figure 3 In some embodiments, a retaining plate 340 is also connected between the two vertical parts 310. The retaining plate 340 is disposed opposite to the main board 400 and is recessed inward toward the main board 400 so that the cooling fan 500 can quickly exhaust hot air from the air duct.

[0055] Reference Figure 3 and Figure 4 In some embodiments, a top plate 420 extends horizontally from one end of the main board 400 away from the air outlet 104. The side of the top plate 420 away from the main board 400 is connected to the top of the enclosure plate 340, and the side of the top plate 420 away from the main board 400 is connected to the inner wall of the bottom shell 100. The two ends of the top plate 420 are respectively connected to the ends of the adjacent vertical parts 310 away from the air outlet 104. A ventilation opening opposite to the air outlet 104 is provided through the top plate 420. A cooling fan 500 is disposed on the top plate 420 and is located above the ventilation opening.

[0056] The top plate 420 is fixed horizontally to the top wall of the main board 400. Two ventilation holes are provided through the top wall of the top plate 420. There are also two cooling fans 500 in this embodiment. One cooling fan 500 is installed above one of the ventilation holes, and the other cooling fan 500 is installed above the other ventilation hole.

[0057] Specifically, one end of the top plate 420 is connected to the top of the vertical part 310 of the adjacent air duct plate 300, and the other end of the top plate 420 is connected to the top of the vertical part 310 of the adjacent air duct plate 300. In this way, a relatively closed heat dissipation air duct 350 can be formed, so that the outside air, under the guidance of the cooling fan 500, passes through the extension part 330, the inclined part 320, and the vertical part 310 in sequence and reaches the position of the main board 400, thereby dissipating heat from the various components 410 on the main board 400. Under the action of the cooling fan 500, the hot air can be discharged downward from the air outlet 104 and discharged from the pile body.

[0058] In this embodiment, the top plate 420 and the air duct plate 300 work together to form a relatively closed heat dissipation air duct 350, and the cooling fan 500 can effectively guide the air entering from the air inlet 102 so that the outside air can fully dissipate heat from the components 410 on the motherboard 400.

[0059] Reference Figure 3 and Figure 5 In some embodiments, dustproof components are provided on the side wall of the bottom shell 100 on the side of the air inlet 102 and on the side wall of the bottom shell 100 on the side of the air outlet 104. The dustproof component near the air inlet 102 is disposed opposite to the air inlet 102, and the dustproof component near the air outlet 104 is disposed opposite to the air outlet 104.

[0060] Specifically, the dustproof components can filter the air entering the heat dissipation duct 350 from the air inlet 102 and the air outlet 104, thereby reducing the possibility of external dust accumulating on the components 410 in the pile body and affecting the heat dissipation effect of the components 410.

[0061] Reference Figure 5 and Figure 6 In some embodiments, the inner sidewall of the bottom shell 100 is provided with a mounting portion 120 opposite to the air inlet 102, and the dustproof component includes a dustproof cotton 110, which is disposed in the mounting portion 120 and located above the extension portion 330.

[0062] The dustproof cotton 110 is block-shaped and can fully cover the air inlet 102. The mounting part 120 includes a spacer frame 122 and clamping plates 124 disposed on both sides of the spacer frame 122. One side of the spacer frame 122 is opposite to the air inlet 102, and the other side of the spacer frame 122 and the two clamping plates 124 form a mounting groove. The dustproof cotton 110 is clamped in the mounting groove, and the bottom wall of the clamping plate 124 is flush with or protrudes from the dustproof cotton 110. However, the clamping plate 124 is located above the extension 330 so that the water accumulated in the drainage part 332 can be smoothly discharged from the gap between the bottom wall of the clamping plate 124 and the top of the extension 330.

[0063] Specifically, the spacer frame 122 is hollowed out so as not to affect the air intake at the air inlet 102, and a certain distance is left between the spacer frame 122 and the mesh plate 160 to prevent the dustproof cotton 110 from directly contacting the mesh plate 160. This reduces the possibility that the air inlet will be difficult to enter due to excessive water absorption by the dustproof cotton 110 in rainy weather. In this way, while ensuring the dustproof effect of the dustproof cotton 110, the normal heat dissipation of the DC charging pile can also be guaranteed.

[0064] Reference Figure 1 , Figure 7 and Figure 8 In some embodiments, an air guide box 600 is also included. The air guide box 600 is disposed at one end of the bottom shell 100 located at the air outlet 104. The air guide box 600 is connected to the air outlet 104. An exhaust port 610 is provided at the end of the air guide box 600 away from the air outlet 104.

[0065] In order to improve air output efficiency and achieve ideal heat dissipation effect, an air guide box 600 is added to the bottom wall of the bottom shell 100. The air guide box 600 has a rectangular frame cross-section with openings on the top and bottom sides. That is, the top of the air guide box 600 is connected to the air outlet 104, and the bottom of the air guide box 600 is provided with an exhaust port 610.

[0066] Specifically, in actual use, when the cooling fan 500 cools the components 410 on the motherboard 400, it blows hot air into the air guide box 600 so that the hot air is discharged from the exhaust port 610. Due to the setting of the air guide box 600, the area of ​​the exhaust port 104 is increased, which can improve the air output efficiency and heat dissipation effect.

[0067] Reference Figure 7 In some embodiments, the air guide box 600 has a plurality of heat dissipation holes 620 on one or more side walls.

[0068] Specifically, in order to further enhance the heat dissipation effect of the air guide box 600, a plurality of heat dissipation holes 620 are provided on one or more side walls of the air guide box 600. In this embodiment, heat dissipation holes 620 can be provided on two opposite side walls of the air guide box 600 as an example.

[0069] Reference Figure 7 and Figure 8 In some embodiments, the air guide box 600 is provided with a dustproof component 630, which protects the heat dissipation hole 620 and the exhaust port 610 from dust.

[0070] Since multiple heat dissipation holes 620 are opened on the air guide box 600, there is a possibility that external dust may enter the pile body from the exhaust port 610, causing contamination to the components 410 and affecting heat dissipation. Therefore, a dustproof component 630 needs to be added to the air guide box 600 to protect the heat dissipation holes 620 and exhaust port 610 on the air guide box 600 from dust.

[0071] Reference Figure 7 and Figure 8 In some embodiments, the dustproof component 630 includes a filter cotton 631 and a fastener. The filter cotton 631 is disposed opposite to the exhaust port 610 and the heat dissipation hole 620. The fastener is disposed inside the air guide box 600 and is used to limit the filter cotton 631 inside the air guide box 600.

[0072] Specifically, the filter cotton 631 is arranged in a block shape. In this embodiment, taking the air guide box 600 with heat dissipation holes 620 on both sides and an exhaust port 610 at the bottom as an example, the filter cotton 631 is arranged in a U-shape inside the air guide box 600. The fixing member is used to limit the filter cotton 631 so as to stably fix the filter cotton 631 inside the air guide box 600, thereby ensuring the dust protection function of the air guide box 600.

[0073] Reference Figure 7 and Figure 8 In some embodiments, the fixing member includes a fixing mesh frame 632, one end of which is detachably connected to the inner wall of the air guide box 600, and the other end of which extends horizontally above the exhaust port 610. The fixing mesh frame 632 and the inner wall of the air guide box 600 form a slot, and the filter cotton 631 is inserted into the slot.

[0074] The air guide box 600 has a fixing frame 633 on the inner wall of the air vent 620 and above the exhaust port 610, with a certain distance reserved between the fixing frame 633 and the inner wall of the air guide box 600. Taking the U-shaped arrangement of the filter cotton 631 as an example, the fixing mesh frame 632 is also U-shaped, and a certain distance is also reserved between the fixing mesh frame 632 and the fixing frame 633. Thus, the fixing mesh frame 632 and the inner wall of the air guide box 600 can be closed to form a slot. A fixing plate 634 is detachably connected to the top of the fixing mesh frame 632. The fixing mesh frame 632 can be fixedly connected to the fixing frame 633 through the cooperation of the fixing plate 634 and the fixing screws 635.

[0075] Specifically, filter cotton 631 is first laid inside the air guide box 600 so that it fits tightly against the fixing frame 633. Then, the fixing mesh frame 632 extends into the air guide box 600 from the top. Then, the fixing mesh frame 632 is fixed inside the air guide box 600 by the cooperation of the fixing plate 634 and the fixing screw 635, thereby fixing the filter cotton 631.

[0076] The DC charging pile in this application forms a heat dissipation air duct 350 through the cooperation of the air duct plate 300, main board 400, bottom shell 100 and top cover 200. Under the action of the cooling fan 500, outside air is drawn into the heat dissipation air duct 350 to dissipate heat from the various components 410 on the main board 400, and the hot air is discharged from the internal cavity of the charging pile through the air outlet 104, thereby ensuring the heat dissipation performance of the DC charging pile. By placing the main board 400 of the DC charging pile between two heat dissipation channels, that is, by placing the circuit part of the DC charging pile in the bottom shell 100. The air duct plate 300, near the air outlet 104, forms a hydrophobic section 332 between itself and the inner wall of the bottom shell 100. This section allows rainwater to be expelled from the bottom shell 100 when it enters the cooling duct 350 from the air inlet 102, thus providing good protection for the DC charging pile. In addition, the combination of the air guide box 600 and the dustproof component 630 further enhances the heat dissipation of the DC charging pile while also improving its protective performance.

[0077] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A DC charging pile, characterized in that, The DC charging pile includes: The bottom shell has air inlets on both sides and an air outlet at one end. A top cover is disposed at the end of the bottom shell away from the air outlet, and the inner cavity of the top cover and the inner cavity of the bottom shell enclose the inner cavity of the pile body; Two air duct plates are installed inside the internal cavity of the pile body, and the air duct plates correspond one-to-one with the air inlets and are arranged opposite to each other. The main board is disposed inside the internal cavity of the pile body. The main board is provided with multiple components. The main board is located between the two air duct plates. The air duct plates, the end of the main board away from the air outlet, and the cavity wall of the internal cavity of the pile body away from the air outlet form a heat dissipation air duct. The end of the air duct plate near the air outlet and the inner wall of the bottom shell form a hydrophobic part that is opposite to and communicates with the air inlet. A cooling fan is located at the end of the motherboard away from the air outlet. The cooling fan is used to draw outside air into the cooling duct to dissipate heat from the components on the motherboard and to exhaust the hot air from the air outlet into the internal cavity of the pile body.

2. The DC charging pile according to claim 1, characterized in that, The air duct plate includes: The vertical part is connected at one end to the end of the main board that is furthest from the air outlet. The inclined portion has one end connected to the end of the vertical portion near the air outlet, and the other end of the inclined portion extends inclinedly toward the air inlet. The extension has one end connected to the end of the inclined portion away from the vertical portion, and the other end connected to the inner wall of the bottom shell. The extension, the inclined portion, and the inner wall of the bottom shell near the air inlet form the hydrophobic portion.

3. The DC charging pile according to claim 2, characterized in that, The motherboard has a top plate extending horizontally from one end away from the air outlet. The side of the top plate away from the motherboard is connected to the inner wall of the bottom shell. The two ends of the top plate are respectively connected to the adjacent vertical part away from the air outlet. A ventilation opening is provided through the top plate, which is opposite to the air outlet. The cooling fan is installed on the top plate and is located above the ventilation opening.

4. The DC charging pile according to claim 2, characterized in that, Dustproof components are provided on the side wall of the bottom shell located on the side of the air inlet and on the side wall of the bottom shell located on the side of the air outlet. The dustproof component near the air inlet is arranged opposite to the air inlet, and the dustproof component near the air outlet is arranged opposite to the air outlet.

5. The DC charging pile according to claim 4, characterized in that, The inner wall of the bottom shell is provided with a mounting part opposite to the air inlet. The dustproof component includes dustproof cotton, which is disposed in the mounting part and located above the extension.

6. The DC charging pile according to claim 1, characterized in that, It also includes an air guide box, which is disposed at one end of the bottom shell located at the air outlet. The air guide box is connected to the air outlet, and an exhaust port is provided at the end of the air guide box away from the air outlet.

7. The DC charging pile according to claim 6, characterized in that, The air guide box has multiple heat dissipation holes on one or more side walls.

8. The DC charging pile according to claim 7, characterized in that, The air guide box is equipped with a dustproof component, which protects the heat dissipation holes and the exhaust port from dust.

9. The DC charging pile according to claim 8, characterized in that, The dustproof component includes: The filter cotton is positioned opposite to the exhaust vent and the heat dissipation hole; A fixing element is disposed inside the air guide box, and the fixing element is used to limit the filter cotton inside the air guide box.

10. The DC charging pile according to claim 9, characterized in that, The fastener includes: A fixed mesh frame is provided, one end of which is detachably connected to the inner wall of the air guide box, and the other end of which extends horizontally above the exhaust port. The fixed mesh frame and the inner wall of the air guide box form a slot, and the filter cotton is inserted into the slot.

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