Charging module and charging pile

Abstract

The utility model discloses a charging module and a charging pile, and belongs to the technical field of charging devices. The charging module comprises a machine shell and a convection assembly, the machine shell is provided with a closed cavity, the inner surface of the closed cavity is provided with at least two first containing grooves, the outer surface of the closed cavity is provided with at least two sets of heat dissipation devices, and electronic components of the charging module are arranged in the first containing grooves and the areas, right facing the heat dissipation devices, of the inner surface of the closed cavity respectively; a convection assembly is arranged on the machine shell, and the convection assembly is arranged outside the closed cavity and used for conducting convection heat exchange with the first containing groove and the heat dissipation device. Electronic components of the charging module are arranged in the closed cavity, forced convection heat exchange is carried out through the heat dissipation device, the first containing groove and the convection assembly, it is guaranteed that a circuit part of the charging module runs in a closed environment, the protection grade is high, and the heat dissipation effect is good; and electronic components can be prevented from running at high temperature, so that the service life of the electronic components is prolonged, and the later maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging devices, and in particular to a charging module and a charging pile. Background Art

[0002] At present, the charging modules used in charging piles on the market generally adopt the direct ventilation heat dissipation mode, and their protection level is generally IP20. On the one hand, the IP level requirement for outdoor charging piles is at least IP54. For this reason, the charging piles will add dustproof nets and shutter structures to achieve the IP54 protection level, but the dustproof nets or shutter structures will increase wind resistance and reduce the heat dissipation efficiency of the charging module. On the other hand, the electronic components inside the charging module are seriously heated and require forced air cooling by high-speed fans. The electronic components are in contact with the outside air for a long time. Due to dust blockage, salt spray corrosion, rain and condensation, the charging module fails frequently and its service life is shortened. Therefore, traditional charging piles need regular dust removal and maintenance, and replacement of faulty modules. The operation and maintenance costs are high, and traditional charging piles are not suitable for areas with high dust or salt spray solubility such as mines and coastal areas.

[0003] Therefore, it is urgent to design a charging module and a charging pile to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a charging module and a charging pile, which have good heat dissipation effect, high protection level, and are applicable to many scenarios.

[0005] To achieve this purpose, on the one hand, the utility model adopts the following technical solutions:

[0006] The charging module comprises a casing having a sealed cavity, the inner surface of the sealed cavity being provided with at least two first accommodating grooves, the outer surface of the sealed cavity being provided with at least two groups of heat dissipation devices, the electronic components of the charging module being respectively arranged in the first accommodating grooves and in the area of ​​the inner surface of the sealed cavity facing the heat dissipation devices; the casing is provided with a convection component, the convection component is arranged outside the sealed cavity, and is used for convection heat exchange with the first accommodating grooves and the heat dissipation devices.

[0007] As a preferred technical solution of the above charging module, the housing includes:

[0008] A shell base, wherein the bottom surface of the shell base is concavely provided with the first accommodating groove, the outer side of the bottom surface is provided with the heat dissipation device, and the first accommodating groove and the heat dissipation device are arranged alternately, and the convection component is arranged on the shell base; and,

[0009] An upper cover is sealed and connected to the top of the side wall of the shell base, and the closed cavity is formed between the upper cover and the shell base.

[0010] As a preferred technical solution for the above-mentioned charging module, the convection component includes a fan and a convection duct connected to the fan, the fan is connected to the shell base, the convection duct is arranged at the bottom of the shell base, and the convection duct is opposite to the first accommodating groove and the heat dissipation device.

[0011] As an optimal technical solution for the above-mentioned charging module, the casing also includes a lower cover, which is connected to the lower part of the shell base, and the middle area of ​​the lower cover protrudes toward the shell base so that the convection air duct is formed between the shell base and the lower cover.

[0012] As a preferred technical solution for the above-mentioned charging module, the side wall of the shell base includes a first side wall and a second side wall arranged opposite to each other along the first direction, and the side wall includes a third side wall and a fourth side wall arranged opposite to each other along the second direction, and the first side wall, the second side wall, the third side wall and the fourth side wall are all provided with thinning grooves.

[0013] As a preferred technical solution of the above-mentioned charging module, the first side wall and the second side wall respectively extend in the direction of the lower cover to form an extension wall, and the two first accommodating grooves located at both ends of the first direction are respectively connected to the corresponding extension walls through reinforcing ribs.

[0014] As a preferred technical solution for the above-mentioned charging module, the third side wall extends toward the direction of the lower cover to form an extension wall, the extension wall is provided with a first ventilation mesh hole, the fan is arranged at the first ventilation mesh hole, and the second direction is perpendicular to the first direction.

[0015] As a preferred technical solution of the above-mentioned charging module, a plurality of second accommodating grooves are provided in an area on the inner side of the bottom surface of the shell base facing the heat dissipation device, and some of the electronic components are arranged in the second accommodating grooves.

[0016] As a preferred technical solution of the above-mentioned charging module, the electronic components include a magnetic element and a power semiconductor, the magnetic element is arranged in the first receiving groove, and the power semiconductor is arranged in the second receiving groove.

[0017] As a preferred technical solution of the above-mentioned charging module, at least one air-permeable valve is provided on the bottom surface of the shell base.

[0018] On the other hand, the utility model also adopts the following technical solutions:

[0019] A charging pile comprises the above-mentioned charging module.

[0020] The charging module disclosed in the utility model includes a housing and a convection component. The housing has a sealed cavity. The inner surface of the sealed cavity is provided with at least two first accommodating grooves. The outer surface of the sealed cavity is provided with at least two groups of heat dissipation devices. The electronic components of the charging module are respectively arranged in the first accommodating grooves and the area of ​​the inner surface of the sealed cavity facing the heat dissipation device; the housing is provided with a convection component, which is arranged outside the sealed cavity for convection heat exchange with the first accommodating groove and the heat dissipation device. By arranging the electronic components of the charging module in the sealed cavity and using the heat dissipation device, the first accommodating groove and the convection component for forced convection heat exchange, it is ensured that the circuit part of the charging module operates in a sealed environment with a high protection level, and the heat of the electronic components of the charging module can be fully exchanged to the environment, avoiding the problem of failure and damage of the electronic components when operating at high temperatures, thereby improving the service life of the electronic components inside the charging module and reducing the subsequent maintenance costs.

[0021] The charging pile disclosed in the utility model includes the above-mentioned charging module. The charging pile can work in geographical environments and places with harsh climates, broadening the application scenarios of the charging pile, and does not need to install a system fan, a dustproof net and a shutter structure, saving system costs and improving the overall efficiency and heat dissipation efficiency of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded view of a charging module provided in a specific embodiment of the utility model;

[0023] Figure 2 It is a top view of the housing base of the charging module provided by the specific embodiment of the utility model as viewed from the front;

[0024] Figure 3 This is a schematic diagram of the structure of the housing base of the charging module provided in the specific embodiment of the utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the structure of the housing base of the charging module provided in the specific embodiment of the utility model. Figure 2 ;

[0026] Figure 5 The housing base of the charging module provided by the specific embodiment of the utility model is Figure 4 A schematic diagram of a structure in which an extension wall is arranged on the foundation;

[0027] Figure 6 It is a top view of the housing base of the charging module provided by the specific embodiment of the utility model as viewed from the back;

[0028] Figure 7 This is a schematic diagram of the structure of the housing base of the charging module provided in the specific embodiment of the utility model. Figure 3 ;

[0029] Figure 8 This is a schematic diagram of the structure of the charging module provided by the specific embodiment of the utility model. Figure 1 ;

[0030] Fig. 9 This is a schematic diagram of the structure of the charging module provided in the specific embodiment of the utility model. Figure 2 .

[0031] In the figure:

[0032] 100, housing base; 110, bottom surface; 111, first accommodating groove; 112, heat dissipation device; 113, second accommodating groove; 114, air-permeable valve; 120, third side wall; 122, third screw hole; 123, first ventilation mesh hole; 130, fourth side wall; 131, fifth screw hole; 140, first side wall; 150, second side wall; 160, side wall groove; 170, first screw hole; 180, thinning groove; 190, reinforcing rib;

[0033] 200, upper cover; 210, sinking platform; 211, second screw hole;

[0034] 300, lower cover; 310, second ventilation mesh;

[0035] 400, convection assembly; 410, fan; 420, fan bracket;

[0036] 510, display assembly; 520, handle; 521, fourth screw hole; 530, system input terminal; 531, sixth screw hole; 540, system output terminal; 541, seventh screw hole;

[0037] 610, sealing ring;

[0038] 710, PCB board; 720, magnetic component; 730, power semiconductor. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific implementation methods disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; 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 relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] like Figures 1 to 3 As shown, this embodiment provides a charging module, which is used for charging piles, and of course, can also be used in other charging devices. The charging module includes a housing and a convection component 400, the housing has a closed cavity, the inner surface of the closed cavity is provided with at least two first accommodating grooves 111, the outer surface of the closed cavity is provided with at least two groups of heat dissipation devices 112, and the electronic components of the charging module are respectively arranged in the first accommodating grooves 111 and the area of ​​the inner surface of the closed cavity facing the heat dissipation device 112; the housing is provided with a convection component 400, and the convection component 400 is arranged outside the closed cavity for convection heat exchange with the first accommodating grooves 111 and the heat dissipation device 112. It can be understood that the specific number of the first accommodating grooves 111 and the heat dissipation device 112 can be set according to actual needs.

[0046] By setting the electronic components of the charging module in a closed cavity, using the heat dissipation device 112, the first accommodating groove 111 and the convection assembly 400 to perform forced convection heat exchange, it is ensured that the circuit part of the charging module operates in a closed environment, is waterproof and dustproof, and protects the cleanliness of the electronic components. At the same time, the heat of the electronic components of the charging module is fully exchanged to the environment, avoiding the electronic components of the charging module from operating at high temperatures, resulting in failure and damage, thereby increasing the service life of the electronic components inside the charging module and reducing the subsequent maintenance costs. This structure also improves the protection level of the charging module. Under the premise of efficient heat dissipation, it has the functions of waterproof, dustproof, and salt spray proof, so that the charging pile with the charging module can work in geographical environments and places with harsh climates, broadening the application scenarios of the charging pile. The protection level of the charging module of this embodiment reaches IP65. The charging pile using the charging module does not need to install a system fan, dustproof net and shutter structure, saving system costs and improving the overall efficiency and heat dissipation efficiency of the charging pile.

[0047] The housing includes a housing base 100 and an upper cover 200, the upper cover 200 is sealed and connected to the top of the side wall of the housing base 100, and the upper cover 200 and the housing base 100 are surrounded to form the above-mentioned closed cavity. The bottom surface 110 of the housing base 100 is a heat dissipation surface, and the above-mentioned first receiving groove 111 is concavely provided on the bottom surface 110, and a heat dissipation device 112 is provided on the outer side of the bottom surface 110, and the first receiving groove 111 and the heat dissipation device 112 are arranged alternately, and the convection assembly 400 is arranged on the housing base 100. Exemplarily, three first receiving grooves 111 and two groups of heat dissipation devices 112 are provided on the housing base 100, and the two groups of heat dissipation devices 112 are respectively arranged in two intervals formed by the three first receiving grooves 111.

[0048] The convection assembly 400 includes a fan 410 and a convection air duct connected to the fan 410. The fan 410 is connected to the housing base 100. The convection air duct is arranged at the bottom of the housing base 100, and the convection air duct is directly opposite to the first accommodating groove 111 and the heat dissipation device 112. The convection assembly 400 also includes a fan bracket 420. The fan 410 is installed on the fan bracket 420 by connecting members such as screws. The fan bracket 420 is fixedly connected to the housing base 100 by connecting members such as screws. In order to improve the convection heat exchange effect, multiple fans 410 can be provided. In this embodiment, four fans 410 are provided.

[0049] The housing further includes a lower cover 300, which is connected to the lower part of the housing base 100, and the middle area of ​​the lower cover 300 is convex toward the housing base 100, so that a convection air duct is formed between the housing base 100 and the lower cover 300. Through the cooperation of the fan 410 and the convection air duct, the heat of the first accommodating groove 111 and the heat dissipation device 112 can be quickly taken away, so as to achieve sufficient heat dissipation of the electronic components of the charging module.

[0050] The lower cover 300 in this embodiment is an L-shaped structure, including a vertical plate and a horizontal plate vertically connected. The middle area of ​​the horizontal plate protrudes toward the shell base 100 to form a convection air duct with the shell base 100. The vertical plate is connected to the shell base 100, and a second ventilation mesh 310 is arranged on the vertical plate.

[0051] A plurality of second accommodating grooves 113 are provided on the inner side of the bottom surface 110 of the housing base 100 facing the heat dissipation device 112, and some electronic components are arranged in the second accommodating grooves 113. The heat dissipation device 112 can dissipate heat for the electronic components in the second accommodating grooves 113.

[0052] The electronic components of the charging module include a magnetic element 720 and a power semiconductor 730. The magnetic element 720 is disposed in the first receiving groove 111, and the power semiconductor 730 is disposed in the second receiving groove 113. Specifically, the first receiving groove 111 is filled with potting glue to make the magnetic element 720 fully contact with the groove wall of the first receiving groove 111, and the magnetic element 720 is connected to the PCB board 710 through a lead. The magnetic element 720 in this embodiment includes a transformer and an inductor. The specific number of the first receiving groove 111 can be determined according to the specific number of the magnetic element 720, and this embodiment does not make a specific limitation.

[0053] An insulating thermally conductive material is disposed in the second accommodating groove 113, one side of the insulating thermally conductive material is connected to the bottom surface 110 of the housing base 100 through thermally conductive silicone grease, and the other side of the insulating thermally conductive material is connected to the power semiconductor 730 through thermally conductive silicone grease, and the power semiconductor 730 is connected to the PCB board 710 through a semiconductor pin. The insulating thermally conductive material in this embodiment includes an alumina ceramic sheet or an aluminum nitride ceramic sheet, and the power semiconductor 730 includes an IGBT, a MOS, and a diode. The specific number of the second accommodating grooves 113 can be determined according to the specific number of the power semiconductor 730, and this embodiment does not make a specific limitation.

[0054] The heat sink 112 in this embodiment may be, but is not limited to, a heat sink fin. The number of each group of heat sink fins should be set according to the actual number of corresponding power semiconductors 730. The main power circuit of the charging module includes a PFC circuit and a DC circuit. The number of power semiconductors in the PFC circuit is less than that in the DC circuit. Therefore, accordingly, the number of heat sink fins corresponding to the PFC circuit is less than that of the heat sink fins corresponding to the DC circuit.

[0055] At least one breathable valve 114 is also provided on the bottom surface 110 of the shell base 100, and the breathable valve 114 can adjust the pressure difference between the inside of the closed cavity and the external environment. When the internal pressure increases due to temperature changes, the breathable valve 114 will open to allow gas to escape, thereby preventing the equipment from being damaged due to excessive pressure; on the contrary, when the internal pressure decreases, the breathable valve 114 allows external gas to enter to maintain pressure balance. Furthermore, the breathable valve 114 is arranged on a side close to the fourth side wall 130, which can avoid other main components arranged in the closed cavity and avoid interference during installation. Two breathable valves 114 are provided on the bottom surface 110 in this embodiment, and the two breathable valves 114 are respectively arranged at two corners close to the fourth side wall 130. Of course, the number of breathable valves 114 is not limited to this, and three or more can be designed according to actual conditions.

[0056] The side wall of the shell base 100 is connected to the four peripheries of the bottom surface 110 and extends vertically upward. A side wall groove 160 is provided on the side wall. A sealing ring 610 is provided in the side wall groove 160. The upper cover 200 is connected to the side wall groove 160 to achieve a sealed connection between the upper cover 200 and the shell base 100.

[0057] Specifically, combined Figure 4 and Figure 5 As shown, the side wall includes a first side wall 140 and a second side wall 150 arranged oppositely along the first direction ab, and includes a third side wall 120 and a fourth side wall 130 arranged oppositely along the second direction cd, and the connection between the first side wall 140, the second side wall 150, the third side wall 120 and the fourth side wall 130 and the upper cover 200 are all sunken to form a side wall groove 160, and a sealing ring 610 is provided in the side wall groove 160. Through the sealing ring 610, the housing base 100 and the upper cover 200 are connected to form a closed cavity. Further, the housing base 100 in this embodiment is an integrally formed structure, that is, the bottom surface 110, the first side wall 140, the second side wall 150, the third side wall 120 and the fourth side wall 130 are integrally formed and manufactured.

[0058] A plurality of first screw holes 170 are arranged on the outside of the side wall groove 160, and a sink 210 is arranged on the four edges of the upper cover 200. The height of the sink 210 is greater than or equal to 4 mm, and a plurality of second screw holes 211 are arranged on the sink 210 opposite to the first screw holes 170. The fixing screws pass through the second screw holes 211 and the first screw holes 170 to fix the upper cover 200 to the third side wall 120, the fourth side wall 130, the first side wall 140, and the second side wall 150 through the sealing ring 610.

[0059] The first side wall 140 , the second side wall 150 , the third side wall 120 and the fourth side wall 130 are all provided with thinning grooves 180 to make the side wall thickness uniform and improve the heat dissipation performance, while reducing the weight of the housing base 100 and saving costs.

[0060] Further, refer to Figure 6 and Figure 7 As shown, the first side wall 140 and the second side wall 150 extend toward the lower cover 300 to form an extension wall, and the two first accommodating grooves 111 at both ends of the first direction ab are connected to the corresponding extension wall through reinforcing ribs 190. This structure can increase the support strength of the first side wall 140 and the second side wall 150 when the charging module is installed vertically, thereby improving the overall structural strength.

[0061] Combination Figure 1 and Figure 5As shown, the third side wall 120 extends toward the lower cover 300 to form an extension wall, on which a first ventilation mesh hole 123 is disposed, and the fan 410 is disposed at the first ventilation mesh hole 123, and the second direction cd is perpendicular to the first direction ab. In order to meet the installation requirements of the fan 410, the third side wall 120 is extended, and at the same time, the forced convection heat exchange effect of the fan 410 and the convection air duct can be realized. It should be noted that, as Figure 1 As shown, the first direction ab is the left-right direction of the charging module when it is in normal use, and the second direction cd is the front-back direction of the charging module when it is in normal use.

[0062] like Figure 4 , Figure 5 and Figure 8 As shown, a display assembly 510 and at least one handle 520 are provided on the third side wall 120, and the handle 520 is located below the display assembly 510. The handle 520 is connected to the third side wall 120 by screws. Specifically, a third screw hole 122 is provided on the third side wall 120, and a fourth screw hole 521 is provided on the handle 520 opposite to the third screw hole 122, and a fixing screw passes through the fourth screw hole 521 and the third screw hole 122 to fix the handle 520 to the third side wall 120. The charging module can be moved and carried by the handle 520. In this embodiment, two handles 520 are provided on the third side wall 120, and the two handles 520 are respectively close to the left edge and the right edge of the third side wall 120, and the two handles 520 improve the convenience of use.

[0063] like Figure 7 and Fig. 9 As shown, the fourth side wall is provided with a system input terminal 530 and a system output terminal 540. Specifically, a plurality of fifth screw holes 131 are provided on the fourth side wall, a plurality of sixth screw holes 531 are provided on the system input terminal 530 directly opposite to the fifth screw holes 131, a plurality of seventh screw holes 541 are provided on the system output terminal 540 directly opposite to the fifth screw holes 131, a fixing screw passes through the sixth screw hole 531 and the fifth screw hole 131 to fix the system input terminal 530 to the fourth side wall, and a fixing screw passes through the seventh screw hole 541 and the fifth screw hole 131 to fix the system output terminal 540 to the fourth side wall. In this embodiment, the system input terminal 530 and the system output terminal 540 are IP65 terminals with self-contained sealing rings.

[0064] This embodiment also provides a charging pile, which includes the above-mentioned charging module. Since the protection level of the above-mentioned charging module reaches IP65, the charging pile using the charging module does not need to install a system fan, a dustproof net and a shutter structure, which saves system costs and improves the overall efficiency and heat dissipation efficiency of the charging pile.

[0065] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Charging module, characterized in that: The invention comprises a casing, wherein the casing has a sealed cavity, the inner surface of the sealed cavity is provided with at least two first accommodating grooves (111), the outer surface of the sealed cavity is provided with at least two groups of heat dissipation devices (112), and the electronic components of the charging module are respectively arranged in the first accommodating grooves (111) and in the area of ​​the inner surface of the sealed cavity facing the heat dissipation devices (112); the casing is provided with a convection component (400), and the convection component (400) is arranged outside the sealed cavity and is used for convection heat exchange with the first accommodating grooves (111) and the heat dissipation devices (112).

2. The charging module according to claim 1, characterized in that: The housing comprises: A housing base (100), wherein the bottom surface (110) of the housing base (100) is concavely provided with the first accommodating groove (111), the outer side of the bottom surface (110) is provided with the heat dissipation device (112), and the first accommodating groove (111) and the heat dissipation device (112) are arranged alternately, and the convection assembly (400) is arranged on the housing base (100); and, An upper cover (200), the upper cover (200) is sealed and connected to the top of the side wall of the shell base (100), and the closed cavity is formed between the upper cover (200) and the shell base (100).

3. The charging module according to claim 2, characterized in that: The convection assembly (400) comprises a fan (410) and a convection air duct connected to the fan (410), the fan (410) being connected to the housing base (100), the convection air duct being arranged at the bottom of the housing base (100), and the convection air duct being directly opposite to the first accommodating groove (111) and the heat dissipation device (112).

4. The charging module according to claim 3, characterized in that: The casing further comprises a lower cover (300), wherein the lower cover (300) is connected to the lower portion of the shell base (100), and a middle region of the lower cover (300) is protruded toward the shell base (100), so that the convection air duct is formed between the shell base (100) and the lower cover (300).

5. The charging module according to claim 4, characterized in that: The side wall of the shell base (100) includes a first side wall (140) and a second side wall (150) arranged opposite to each other along a first direction, and the side wall includes a third side wall (120) and a fourth side wall (130) arranged opposite to each other along a second direction, and the first side wall (140), the second side wall (150), the third side wall (120) and the fourth side wall (130) are all provided with a thinning groove (180).

6. The charging module according to claim 5, characterized in that: The first side wall (140) and the second side wall (150) respectively extend in the direction of the lower cover (300) to form an extension wall, and the two first accommodating grooves (111) located at the two ends of the first direction are respectively connected to the corresponding extension wall through reinforcing ribs (190).

7. The charging module according to claim 5, characterized in that: The third side wall (120) extends in the direction of the lower cover (300) to form an extension wall, and a first ventilation mesh hole (123) is provided on the extension wall. The fan (410) is arranged at the first ventilation mesh hole (123), and the second direction is perpendicular to the first direction.

8. The charging module according to claim 2, characterized in that: A plurality of second accommodating grooves (113) are provided in an area on the inner side of the bottom surface (110) of the housing base (100) facing the heat dissipation device (112), and some of the electronic components are arranged in the second accommodating grooves (113).

9. The charging module according to claim 8, characterized in that: The electronic component comprises a magnetic element (720) and a power semiconductor (730); the magnetic element (720) is arranged in the first containing groove (111), and the power semiconductor (730) is arranged in the second containing groove (113).

10. The charging module according to any one of claims 2 to 9, characterized in that: At least one air permeable valve (114) is provided on the bottom surface (110) of the housing base (100).

11. A charging pile, characterized in that: Comprising the charging module according to any one of claims 1-10.

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