Power supply module and charging pile

Abstract

The utility model provides a power supply module and a charging pile. The power supply module comprises a housing, a first heat radiation assembly, a second heat radiation assembly and a plurality of heating components. The first heat dissipation assembly divides the interior of the shell into a first cavity and a second cavity, the first cavity is a closed cavity, the multiple heating components are fixed in the first cavity, the first heat dissipation assembly is used for conducting heat in the first cavity to the second cavity, and the second heat dissipation assembly is arranged in the second cavity and used for conducting heat in the second cavity to the outside. According to the utility model, the plurality of heating components are fixed in the closed cavity, so that external impurities are effectively prevented from entering the closed cavity, the interference of the impurities on the heating components in the power supply module is reduced, and the safety and reliability of the power supply module are improved. Meanwhile, the heat in the first cavity can be guided out to the second cavity through the first heat dissipation assembly, then the heat is guided out to the outside through the second cavity, and efficient heat dissipation is achieved on the basis that external impurities are isolated from the interior of the power module.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electronic equipment heat dissipation, especially, a kind of power module and charging pile. BACKGROUND

[0002] With the rapid development of new energy vehicles, communication energy and energy storage equipment, power module as indispensable part in charging equipment, its stability and reliability of performance are more and more valued.Power module works in high-voltage switch state, generally, fan-cooled switching power supply in the process of operation, due to the action of fan, insects, dust, salt fog and other harmful substances in environment will continue to enter power inside, and accumulate in different positions.These accumulated foreign matter will become conductive material after absorbing moisture in air, even part of foreign matter itself is conductive material, these conductive material can cause internal short circuit of power supply, and then cause power failure. SUMMARY

[0003] The technical purpose of the utility model is to provide a kind of power module and charging pile, to solve the problem of low reliability and safety of traditional power module.

[0004] To solve the above technical problems, the utility model is realized as follows, a kind of power module, including shell, first radiating assembly, second radiating assembly and multiple heat-generating components;

[0005] The first radiating assembly separates the inside of the shell to form a first cavity and a second cavity, the first cavity is a closed cavity, and multiple heat-generating components are fixed in the first cavity, the first radiating assembly is used to conduct heat in the first cavity to the second cavity, the second radiating assembly is arranged in the second cavity, and the second radiating assembly is used to lead heat in the second cavity to the outside.

[0006] Further, the power module further includes a third radiating assembly arranged in the first cavity, and the third radiating assembly is used to make air circulate and flow in the first cavity.

[0007] Further, the first cavity includes a first space and a second space in communication.

[0008] Multiple heat-generating components are fixed in the first space, the first radiating assembly is used to conduct heat in the first space to the second cavity, and the third radiating assembly is used to make air circulate and flow between the first space and the second space.

[0009] Further, the power module further includes a porous partition plate spaced apart from the first radiating assembly.

[0010] The first space is enclosed by the porous partition plate, the shell and the first heat dissipation component, and the second space is enclosed by the porous partition plate and the shell, and the through holes of the porous partition plate communicate the first space and the second space.

[0011] Further, the third heat dissipation component is arranged at the inner edge of the porous partition plate, and the through holes of the porous partition plate are distributed along the inner edge of the porous partition plate.

[0012] Further, the first heat dissipation component is provided with a heat dissipation structure on one side facing the second cavity, and a plurality of heat generating components are fixedly arranged on the side of the first heat dissipation component away from the second cavity.

[0013] Further, the second cavity is provided with an air duct capable of communicating with the outside, and the second heat dissipation component is used to make the air in the second cavity flow along the air duct and the outside, so that the heat in the second cavity is conducted to the outside, and along the height extension direction of the air duct, the heat dissipation structure overlaps the projection of the air duct.

[0014] Further, one of the heat generating components is a high-voltage transformer component, the high-voltage transformer component comprises a shell, a first heat conductor and a plurality of high-frequency magnetic elements, the plurality of high-frequency magnetic elements are fixed in the shell, and the first heat conductor is filled between the high-frequency magnetic elements and the shell.

[0015] Further, one of the heat generating components is a PCB board, the first heat dissipation component is provided with a second heat conductor on the side away from the second cavity, and the heat generating area of the PCB board and the first heat dissipation component are connected through the second heat conductor.

[0016] The utility model discloses still provide a kind of charging pile, including pile body, charging gun cable, charging gun and the power module as described above;The power module is fixed on the pile body, and the both ends of the charging pile cable are electrically connected to the connector of the charging gun and the power module respectively.

[0017] Compared with the prior art, the power module and the charging pile have the following beneficial effects:

[0018] The plurality of heat generating components in the power module are fixed in the closed cavity, effectively blocking the entry of external impurities into the closed cavity, reducing the interference of impurities on the heat generating components in the power module, and improving the safety and reliability of the power module. At the same time, the first heat dissipation component can conduct the heat in the first cavity to the second cavity, and then conduct the heat to the outside through the second cavity, realizing efficient heat dissipation on the basis of isolating external impurities inside the power module. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1It is the whole structure schematic diagram of power module in the embodiment of the utility model;

[0020] Figure 2 It is the whole structure explosion map of power module in the embodiment of the utility model;

[0021] Figure 3 It is along Figure 1 The section view of A-A in it;

[0022] Figure 4 It is along Figure 1 The section view of B-B in it;

[0023] Figure 5 It is the partial structure schematic diagram of power module in the embodiment of the utility model;

[0024] Figure 6 It is the process schematic diagram of multiple heat generating components assembly to first radiating assembly in the embodiment of the utility model;

[0025] Figure 7 It is the first visual angle schematic diagram of multiple heat generating components and first radiating assembly complete assembly in the embodiment of the utility model;

[0026] Figure 8 It is the second visual angle schematic diagram of multiple heat generating components and first radiating assembly complete assembly in the embodiment of the utility model;

[0027] Figure 9 It is the schematic diagram of charging pile in the embodiment of the utility model.

[0028] In the drawing, each reference sign represents:

[0029] 1, charging pile;10, power module;20, first cable;30, second cable;40, charging gun;50, pile body;51, charging gun socket;52, suspension assembly;

[0030] 100, shell;100a, first cavity;100b, second cavity;100c, third cavity;101a, first space;101b, second space;110, multi-hole partition;111, avoidance site;120, rear shell;121, waterproof cover plate;122, mounting site;123, heat dissipation hole;130, panel;

[0031] 200, first radiating assembly;210, radiating structure;

[0032] 300, second radiating assembly;310, fixed support;320, fan assembly;

[0033] 400, third radiating assembly;

[0034] 500, high-voltage transformer assembly; 510, housing; 520, high-frequency magnetic element;

[0035] 600, PCB board; 610, second heat conductor; 611, ceramic gasket; 620, power tube; 630, insulating assembly;

[0036] 710, monitoring module; 720, joint; 730, direct current contactor. DETAILED DESCRIPTION

[0037] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the scope of protection of the present application.

[0038] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "height", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0039] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] Embodiment:

[0041] With the rapid development of new energy vehicles, communication energy and energy storage equipment, the stability and reliability of the performance of the power module, as an indispensable part of the charging equipment, are increasingly valued. The power module works in a high-voltage switching state. In the running process of the general air-cooled switching power supply, due to the action of the fan, harmful substances such as insects, dust and salt spray in the environment will continuously enter the inside of the power supply and accumulate in different positions. After these accumulated foreign matters absorb moisture in the air, they become conductive substances, or even some foreign matters are conductive substances themselves. These conductive substances may cause short circuit of different conductors inside the power supply, and further cause the power supply to fail.

[0042] To solve the above problems, a high protection level power supply meeting IP65 level (Ingress Protection 65) is designed in the related technology. The IP65 level means that the internal components of the power module are completely isolated from the external environment, thereby eliminating the risk of internal component short circuit caused by environmental foreign matter entering.

[0043] However, the traditional power module meeting the IP65 level mostly adopts natural cooling for heat dissipation. The components of the power module are completely sealed in an aluminum shell, and the heat dissipation efficiency is extremely low, which is difficult to meet the heat dissipation demand of the high-power and high-voltage power module.

[0044] Therefore, a power module capable of realizing isolation of internal components from the external environment and high-efficiency heat dissipation is provided in the embodiment.

[0045] Please refer to Figures 1 to 9 In the embodiment, a power module 10 includes a shell 100, a first heat dissipation assembly 200, a second heat dissipation assembly 300 and a plurality of heat generating components.

[0046] The first heat dissipation assembly 200 divides the inside of the shell 100 to form a first cavity 100a and a second cavity 100b. The first cavity 100a is a closed cavity, and the plurality of heat generating components are fixed in the first cavity 100a. The first heat dissipation assembly 200 is used for conducting heat in the first cavity 100a to the second cavity 100b. The second heat dissipation assembly 300 is arranged in the second cavity 100b, and the second heat dissipation assembly 300 is used for conducting heat in the second cavity 100b to the outside.

[0047] In this way, the plurality of heat generating components in the power module 10 are fixed in the closed cavity, effectively blocking the entry of external impurities into the closed cavity, reducing the interference of impurities on the heat generating components in the power module 10, and improving the safety and reliability of the power module 10. At the same time, the first heat dissipation assembly 200 can conduct heat in the first cavity 100a to the second cavity 100b, and then conduct heat to the outside through the second cavity 100b, realizing high-efficiency heat dissipation on the basis of isolating the inside of the power module 10 from the external impurities.

[0048] Further, the inner-outer dual circulation scheme is adopted in the embodiment to improve the heat dissipation efficiency of the power module 10.

[0049] As shown in Figure 1 , 3 and 4, the outer circulation heat dissipation process of the power module 10 refers to the process that the heat generated by the heat-generating components is transferred to the second cavity 100b through the first heat dissipation assembly 200, and then the heat is conducted to the outside by the second heat dissipation assembly 300.

[0050] The inner circulation heat dissipation process of the power module 10 refers to the process that the air circulation is carried out for the inside of the first cavity 100a to take away the heat generated by the heat-generating components and disperse the heat to the first heat dissipation assembly 200 and the shell 100. After the heat reaches the first heat dissipation assembly 200 and the shell 100, the heat will be further conducted to the outside through the outer circulation heat dissipation process. The inner-outer dual circulation heat dissipation of the power module 10 is carried out at the same time, which will greatly improve the heat dissipation efficiency of the power module 10.

[0051] Regarding the inner circulation heat dissipation structure 210 of the power module 10 in the embodiment, preferably, as shown in Figure 2 and 3 The power module 10 further comprises a third heat dissipation assembly 400 arranged in the first cavity 100a, and the third heat dissipation assembly 400 is used to make the air circulate and flow in the first cavity 100a.

[0052] The third heat dissipation assembly 400 is a forced air cooling heat dissipation assembly, which can effectively accelerate the air flow in the first cavity 100a, realize forced convection heat dissipation in the first cavity 100a, and improve the heat dissipation efficiency in the first cavity 100a.

[0053] Further, as shown in Figure 3 and 4 The first cavity 100a comprises a first space 101a and a second space 101b which are communicated;

[0054] A plurality of heat-generating components are fixed in the first space 101a, the first heat dissipation assembly 200 is used to conduct the heat in the first space 101a to the second cavity 100b, and the third heat dissipation assembly 400 is used to make the air circulate and flow between the first space 101a and the second space 101b.

[0055] The first cavity 100a is further divided into two spaces, which can further improve the heat exchange efficiency. The heat generating components in the first space 101a generate heat, and the air flow carries away the heat and circulates between the first space 101a and the second space 101b. In this way, on the one hand, it can avoid the phenomenon of local overheating in a single cavity, which helps to evenly distribute the heat and disperse the heat in multiple cavities; on the other hand, it increases the contact area of the air flow passing through the shell 100 and the first heat dissipation assembly 200, and accelerates the exchange of heat in the first cavity 100a with the outside through the shell 100 and the first heat dissipation assembly 200.

[0056] In addition, the circulation between the first space 101a and the second space 101b makes the air flow more uniform, which can reduce air turbulence, improve air flow stability, and reduce the noise of the power module 10 heat dissipation.

[0057] Preferably, in the present embodiment, the third heat dissipation assembly 400 is a spoiler fan, which can optimize the air flow in the first cavity 100a, reduce the influence of irregular air flow on heat dissipation of the heat generating components, reduce turbulence and noise in the air flow, and improve the stability and efficiency of air flow.

[0058] Further, as shown in Figure 3 and 4 , the power module 10 further comprises a porous partition plate 110 arranged apart from the first heat dissipation assembly 200;

[0059] The porous partition plate 110, the shell 100 and the first heat dissipation assembly 200 form the first space 101a, the porous partition plate 110 and the shell 100 form the second space 101b, and the through holes of the porous partition plate 110 communicate the first space 101a and the second space 101b.

[0060] It can be understood that the through holes of the porous partition plate 110 form the air inlet and outlet circulation channels of the first space 101a and the second space 101b. Preferably, the porous partition plate 110 uses a shielding partition plate that can reduce electromagnetic interference and radio frequency interference, so as to improve the anti-interference ability and overall performance of the power module 10.

[0061] Further, as shown in Figure 3 and 4 , the third heat dissipation assembly 400 is arranged at the inner edge of the porous partition plate 110, and the through holes of the porous partition plate 110 are distributed along the inner edge of the porous partition plate 110.

[0062] In the embodiment, the spacing direction of the porous partition plate 110 and the first heat dissipation assembly 200 is defined as the thickness direction of the power module 10, the power module 10 further comprises a height direction and a width direction perpendicular to the thickness direction, the width and the thickness of the power module 10 are parallel to the horizontal direction, and the height of the power module 10 is perpendicular to the horizontal direction. It needs to be understood that the shape of the power module 10 is not limited by the utility model, and the placement direction of the power module 10 is also not limited by the utility model, and the height, the width and the thickness defined in the embodiment are only an example in the actual application scene.

[0063] As shown in Figure 3 , the power module 10 is along the vertical section of the width direction, the arrow in the figure represents the flow direction of the airflow, Figure 3 , the power module 10 is vertically placed, it can be seen that, since the through holes of the porous partition plate 110 are distributed along the inner edge of the porous partition plate 110, the third heat dissipation assembly 400 makes the airflow pass through the through holes of the inner edge of the bottom edge of the porous partition plate 110 from the bottom of the first space 101a into the second space 101b, the airflow flows upward to the top of the second space 101b, and then passes through the through holes of the inner edge of the top edge of the porous partition plate 110 from the top of the second space 101b into the first space 101a, the airflow flows downward in the first space 101a to the bottom of the first space 101a, and repeats the above-mentioned circulation process.

[0064] As shown in Figure 4 , the power module 10 is along the vertical section of the height direction, the arrow in the figure represents the flow direction of the airflow, it can be seen that, the third heat dissipation assembly 400 makes the airflow in the first space 101a flow along the width direction, the airflow passes through the through holes of the inner edge of the side edge of the porous partition plate 110 when flowing to the inner edge of the side edge of the porous partition plate 110, in the second space 101b, the airflow flows in the opposite direction of the first space 101a to the inner edge of the other side edge of the porous partition plate 110, and returns to the first space 101a through the through holes of the inner edge of the other side edge of the porous partition plate 110, and repeats the above-mentioned circulation process.

[0065] As shown in Figure 5 , the dashed line track and the arrow direction in Figure 5 indicate the overall flow direction of the airflow in the first cavity 100a. It can be known that, in the embodiment, a kind of air duct is designed by the through hole distribution of the third heat dissipation assembly 400 and the porous partition plate 110, which can make the airflow flow uniformly along the track between the first space 101a and the second space 101b, the airflow uniformly passes through the surface of the heating component, effectively improves the internal circulation heat dissipation efficiency of the power module 10, simultaneously improves the stability of the airflow in the internal circulation heat dissipation, and reduces the noise of the power module 10 heat dissipation.

[0066] As to the outer circulation heat dissipation structure 210 of the power module 10 in the embodiment, it can be understood that the heat generating components are fixed in the first cavity 100a, and the heat generating components can be fixed on the first heat dissipation assembly 200 or the shell 100, and heat is transferred to the second cavity 100b through the first heat dissipation assembly 200 and the shell 100. Preferably, in the embodiment, the heat generating components are fixed on the first heat dissipation assembly 200.

[0067] In the embodiment, as shown in Figure 3 , the first heat dissipation assembly 200 is provided with a heat dissipation structure 210 on the side facing the second cavity 100b, and a plurality of heat generating components are fixed on the side of the first heat dissipation assembly 200 away from the second cavity 100b.

[0068] In the embodiment, the plurality of heat generating components are respectively a high-voltage transformer assembly 500 and a PCB board 600. In other embodiments, the heat generating components can also be adjusted to other components according to the functions of the power module 10.

[0069] The heat dissipation structure 210 can increase the contact area with the air to accelerate the heat transfer of the first heat dissipation assembly 200 to the second cavity 100b. The plurality of heat generating components are arranged on the first heat dissipation assembly 200, which shortens the heat transfer path of the heat generated by the heat generating components to the first heat dissipation assembly 200, and improves the heat dissipation efficiency of the power module 10.

[0070] Preferably, the first heat dissipation assembly 200 is a metal or alloy with high thermal conductivity. In the embodiment, the first heat dissipation assembly 200 is an aluminum heat dissipation component, and the heat dissipation structure 210 is a heat dissipation fin. The heat generating regions of the plurality of heat generating components are preferably attached to the surface of the first heat dissipation component to achieve efficient heat transfer of the first heat dissipation component.

[0071] Further, as shown in Figure 2 and Figure 4 , the second cavity 100b is provided with an air duct capable of communicating with the outside, and the second heat dissipation assembly 300 is used to make the air in the second cavity 100b flow along the air duct and the outside to make the heat in the second cavity 100b be conducted to the outside, and the projection of the heat dissipation structure 210 overlaps the air duct along the height extension direction of the air duct.

[0072] Figure 4 The arrows in the second cavity 100b in the middle show the flow direction of the air along the air duct. On the basis that the heat dissipation structure 210 expands the surface area of the first heat dissipation assembly 200 in contact with the air, the air duct of the second cavity 100b passes through the heat dissipation structure 210, and the second heat dissipation assembly 300 is used to accelerate the flow rate of the air in contact with the surface of the heat dissipation structure 210 to conduct the heat from the second cavity 100b to the outside, which effectively improves the heat dissipation efficiency.

[0073] Preferably, asFigure 3 and 4 As shown in FIG. 2, the extending direction of the plurality of fins of the heat dissipation structure 210 is parallel to the height extending direction of the air duct, greatly increasing the surface area of the fins in contact with the airflow and improving the heat dissipation efficiency.

[0074] Further, as shown in FIG. 2, one of the heat-generating components is a high-voltage transformer assembly 500, which includes a shell 510, a first heat-conducting body, and a plurality of high-frequency magnetic elements 520 fixed in the shell 510, and the first heat-conducting body is filled between the high-frequency magnetic elements 520 and the shell 510. Figure 6 and 7 Further, as shown in FIG. 2, one of the heat-generating components is a high-voltage transformer assembly 500, which includes a shell 510, a first heat-conducting body, and a plurality of high-frequency magnetic elements 520 fixed in the shell 510, and the first heat-conducting body is filled between the high-frequency magnetic elements 520 and the shell 510.

[0075] Preferably, the first heat-conducting body is a high-thermal-conductivity potting adhesive, and the high-frequency magnetic elements 520 are fixed in the shell 510, and the high-thermal-conductivity potting adhesive is filled into the shell 510 until it covers the high-frequency magnetic elements 520 and is then solidified.

[0076] The high-thermal-conductivity potting adhesive has a thermal conductivity coefficient as high as 1.2-2.8 W / m·K, and its high thermal conductivity can quickly transfer the heat generated by the high-frequency magnetic elements 520 during operation to the shell 510 and the first heat dissipation assembly 200, ensuring the normal operation of the high-frequency magnetic elements 520 in a high-power scenario.

[0077] The high-thermal-conductivity potting adhesive also has good electrical and insulating properties, which can further isolate the high-frequency magnetic elements 520 from the external environment, not only preventing impurities from interfering with the high-frequency magnetic elements 520, but also improving the anti-electromagnetic interference and anti-radio frequency interference capabilities of the high-voltage transformer assembly 500. At the same time, since the high-thermal-conductivity potting adhesive has good waterproof sealing effect, it can protect the high-voltage transformer assembly 500 in humid, dusty, and other harsh environments, improving the stability and reliability of the power supply module 10.

[0078] In this embodiment, the plurality of high-frequency magnetic elements 520 are fixed at intervals in the shell 510, and the shell 510 is an aluminum shell. As an example, the plurality of high-frequency magnetic elements 520 are respectively a high-frequency transformer, a high-frequency PFC inductor, and a high-frequency resonant inductor.

[0079] Further, as shown in FIG. 2, one of the heat-generating components is a high-voltage transformer assembly 500, which includes a shell 510, a first heat-conducting body, and a plurality of high-frequency magnetic elements 520 fixed in the shell 510, and the first heat-conducting body is filled between the high-frequency magnetic elements 520 and the shell 510. Figure 6 and 7 Further, as shown in FIG. 2, one of the heat-generating components is a high-voltage transformer assembly 500, which includes a shell 510, a first heat-conducting body, and a plurality of high-frequency magnetic elements 520 fixed in the shell 510, and the first heat-conducting body is filled between the high-frequency magnetic elements 520 and the shell 510.

[0080] Preferably, the second heat conductor 610 comprises a ceramic gasket 611 and a heat-conductive silicon-based material, the heat-conductive silicon-based material covers a partial area of a side of the first heat dissipation assembly 200 facing away from the second cavity 100b, the ceramic gasket 611 is attached to a side of the heat-conductive silicon-based material facing away from the second cavity 100b, and the heat-generating area of the PCB 600 is attached to the ceramic gasket 611.

[0081] Preferably, as shown in Figure 6 , an insulating assembly 630 is further fixed between the PCB 600 and the first heat dissipation assembly 200, the insulating assembly 630 is used to separate the PCB 600 and the first heat dissipation assembly 200, so as to avoid short circuit caused by accidental contact of the conductive area on the PCB 600 with the first heat dissipation assembly 200. In the embodiment, the insulating assembly 630 is an insulating film.

[0082] Further, as shown in Figure 8 , the power tube 620 on the PCB 600 is arranged on a side of the PCB 600 facing the first heat dissipation assembly 200, and the power tube 620 is attached to the ceramic gasket 611.

[0083] A plurality of components on the PCB 600 other than the power tube 620 are arranged on a side of the PCB 600 facing away from the first heat dissipation assembly 200.

[0084] Preferably, the ceramic gasket 611 is selected from an aluminum nitride ceramic gasket 611, which has high temperature resistance, high electrical insulation performance, low dielectric constant and dielectric loss, high thermal conductivity, good chemical stability, and similar thermal expansion coefficient to the power tube 620 and other components on the PCB 600. In other embodiments, the ceramic gasket 611 can also be selected from a silicon nitride, aluminum oxide, or silicon carbide ceramic gasket 611.

[0085] In addition, the power supply module 10 adopts a modular design, and each assembly is independently arranged for easy disassembly and replacement.

[0086] In the embodiment, as shown in Figure 3 , the housing 100 further comprises a third cavity 100c, and the power supply module 10 further comprises a monitoring module 710 fixed in the third cavity 100c, the monitoring module 710 is used to monitor and control the working state of the power supply module 10.

[0087] The monitoring module 710 is separately placed in the third cavity 100c, and is separated from the heat-generating components, the first heat dissipation assembly 200, the second heat dissipation assembly 300, and the third heat dissipation assembly 400, thereby reducing the influence between them and facilitating replacement.

[0088] Preferably, as shown in Figure 2 , the housing 100 has a detachable waterproof cover plate 121, and the waterproof cover plate 121 and the housing 100 enclose the third cavity 100c.

[0089] The monitoring module 710 can be replaced by the removable waterproof cover 121, which facilitates the maintenance and replacement of the monitoring module 710.

[0090] Preferred, such as Figure 2 and 5 As shown, the power module 10 also includes multiple connectors 720 and multiple DC contactors electrically connected to the monitoring module 710;

[0091] The first connector 720 is used to connect to the first cable 20 of the charging pile 1, and the second connector 720 is used to connect to the second cable 30 of the charging pile 1. The first cable 20 and the second cable 30 are respectively connected to the charging gun 40. The first cable 20 is used to transmit DC power, and the second cable 30 is used to transmit AC power.

[0092] In this embodiment, each connector 720 is a waterproof connector 720, which is suitable for outdoor use of the charging pile 1 and improves the reliability and safety of the power module 10 and the charging pile 1.

[0093] Preferred, such as Figure 2 As shown, the second heat dissipation component 300 includes a fixed bracket 310 and multiple fan assemblies 320. The multiple fan assemblies 320 are detachably connected to the fixed bracket 310. A mounting position 122 is provided on one side of the housing 100, and the fixed bracket 310 is detachably connected to the mounting position 122.

[0094] Preferred, such as Figure 2 As shown, the outer casing 100 includes a panel 130 and a rear casing 120. A mounting position 122 is provided on one side of the rear casing 120. A heat dissipation hole 123 is provided on one side of the rear casing 120 opposite to the side where the mounting position 122 is located. An air duct for the second cavity 100b is formed between the mounting position 122 and the heat dissipation hole 123.

[0095] Preferred, such as Figure 2 As shown, the first heat dissipation component 200 and the perforated partition 110 are detachably connected to the rear shell 120. The third heat dissipation component 400 is detachably connected to the rear shell 120. The perforated partition 110 has a clearance position 111 that matches the third heat dissipation component 400.

[0096] Preferred, such as Figure 2 As shown, the high-voltage transformer assembly 500 is detachably connected to the first heat dissipation assembly 200. The PCB board 600 is detachably connected to the heat dissipation assembly.

[0097] With this configuration, when the control system of the power module 10 detects a fault in any of the components, including the first heat dissipation component 200, the second heat dissipation component 300, the third heat dissipation component 400, the high-voltage transformer component 500, and the PCB board 600, it can be disassembled and replaced individually for repair. This makes the repair of the power module 10 more convenient and faster, reduces the repair cost of the power module 10 and the cost of manual repair, and improves the overall stability and reliability of the power module 10.

[0098] In this embodiment, the outer casing 100, the first heat dissipation component 200, the second heat dissipation component 300, the third heat dissipation component 400, the PCB board 600, and the high-voltage transformer component 500 are all connected by threads. In other embodiments, the above components can also be connected by snap-fit ​​connections or other detachable connection methods.

[0099] like Figure 9 As shown, this embodiment also provides a charging pile 1, including a pile body 50, a charging gun cable, a charging gun 40, and a power module 10 as described above.

[0100] The power module 10 is fixed on the pile body 50, and the two ends of the charging pile 1 cable are electrically connected to the charging gun 40 and the connector 720 of the power module 10, respectively.

[0101] It should be understood that the charging pile 1 provided in this embodiment has similar technical effects to the power module 10 provided in other parts of this embodiment. For the relevant structure and effects of the charging pile 1, please refer to other parts of the specific embodiment, which will not be repeated here.

[0102] Preferred, such as Figure 9 As shown, a charging gun socket 51 is also provided on the side of the charging pile 1 body 50. The charging gun 40 is inserted into the charging gun socket 51 with the gun head facing down to prevent rainwater or dust from entering the conductive pins inside the charging gun head and causing safety accidents such as leakage.

[0103] Preferred, such as Figure 9 As shown, a suspension assembly 52 is installed on the top of the charging pile 1, and the charging gun cable is attached to the suspension assembly 52.

[0104] The suspension component 52 can prevent the charging gun cable from being damaged by ground friction or being run over by vehicles, reducing the risk of damage to the charging gun cable and reducing the safety hazards of the charging pile 1.

[0105] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power module, characterized by The power module comprises a housing, a first heat dissipation assembly, a second heat dissipation assembly and a plurality of heat generating components. The first heat dissipation assembly divides the interior of the housing into a first cavity and a second cavity, the first cavity is a closed cavity, and the plurality of heat generating components are fixed in the first cavity.

2. The power module of claim 1, wherein, The power module further comprises a third heat dissipation assembly arranged in the first cavity, and the third heat dissipation assembly is used for circulating air flow in the first cavity.

3. The power module of claim 2, wherein, The first cavity comprises a first space and a second space in communication. The plurality of heat generating components are fixed in the first space, the first heat dissipation assembly is used for conducting heat in the first space to the second cavity, and the third heat dissipation assembly is used for circulating air flow between the first space and the second space.

4. The power module of claim 3, wherein, The power module further comprises a porous partition plate arranged in the first heat dissipation assembly. The first space is enclosed by the porous partition plate, the housing and the first heat dissipation assembly, the second space is enclosed by the porous partition plate and the housing, and the through holes of the porous partition plate communicate the first space and the second space.

5. The power module of claim 4, wherein, The third heat dissipation assembly is arranged at the inner edge of the porous partition plate, and the through holes of the porous partition plate are distributed along the inner edge of the porous partition plate.

6. The power module of claim 1, wherein, The first heat dissipation assembly is provided with a heat dissipation structure on the side facing the second cavity, and a plurality of heat generating components are fixed on the side of the first heat dissipation assembly away from the second cavity.

7. The power module of claim 6, wherein, The second cavity is provided with an air duct capable of communicating with the outside, the second heat dissipation assembly is used for making the air in the second cavity flow along the air duct and the outside, so as to make the heat in the second cavity dissipate to the outside, and the heat dissipation structure overlaps the projection of the air duct in the height extension direction of the air duct.

8. The power module of claim 1, wherein, One of the heat generating components is a high-voltage transformer assembly, which comprises a shell, a first heat conductor and a plurality of high-frequency magnetic elements, the plurality of high-frequency magnetic elements are fixed in the shell, and the first heat conductor is filled between the high-frequency magnetic elements and the shell.

9. The power module of claim 1, wherein, One of the heat generating components is a PCB board, the first heat dissipation assembly is provided with a second heat conductor on the side away from the second cavity, and the heat generating area of the PCB board is connected with the first heat dissipation assembly through the second heat conductor.

10. A charging post, characterized in that, The power module comprises a pile body, a charging gun cable, a charging gun and a power module as claimed in any one of claims 1-9, the power module is fixed on the pile body, and the two ends of the charging gun cable are respectively electrically connected to the charging gun and the connector of the power module.

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