Heat dissipation structure and direct current charging pile

Abstract

The utility model provides a heat radiation structure and a DC charging pile, the heat radiation structure comprises a box body, a substrate is arranged in the box body, the substrate divides the box body into a first box body and a second box body, a power conversion assembly is arranged in the first box body, a radiator assembly and a fan assembly are arranged in the second box body, the fan assembly is arranged below the radiator assembly, and the power conversion assembly is arranged in the first box body. And an air inlet screen plate and an air outlet screen plate are arranged at the bottom end and the top end of the second box body respectively. The heat dissipation channel of the heat dissipation structure adopts a bottom-in and top-out mode, the density of hot air is large, the density of cold air is small, the air flowing rule is met, and heat dissipation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of charger heat dissipation technology, and in particular to a heat dissipation structure and a DC charging pile. Background Technology

[0002] Direct current (DC) charging stations play a crucial role in electric vehicle charging infrastructure, especially in the field of fast charging. Because a significant amount of heat is generated during charging, the effectiveness of the heat dissipation structure is critical to the performance and lifespan of the charging station.

[0003] Chinese invention patent CN117207809A discloses a sealing and heat dissipation structure for a low-power DC charging pile output module. The heat dissipation duct is right-in, left-out. While the duct is short, it does not meet the optimal heat dissipation method. The high-power heat dissipation devices are located close to the center of the power conversion component, hindering timely heat dissipation. The power conversion component consists of multiple modules, stacked in layers within a sealed module housing. The heat generated by the power conversion component during operation is concentrated, easily leading to problems such as module overheating and power limitation, thus affecting the lifespan of electronic components. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a heat dissipation structure that overcomes the defect that the air duct in the existing technology does not meet the optimal heat dissipation method.

[0005] To achieve the above objectives, this utility model provides a heat dissipation structure, comprising: a housing, wherein a base plate is disposed within the housing, and the base plate divides the housing into a first housing and a second housing. A power conversion component is disposed within the first housing; a heat sink assembly and a fan assembly are disposed within the second housing, with the fan assembly located below the heat sink assembly. An air inlet grille and an air outlet grille are respectively disposed at the bottom and top of the second housing.

[0006] The heat dissipation structure further includes a cover plate and a back plate. The cover plate covers the first housing, and the back plate covers the second housing. At least one turbulence fan is provided on the cover plate corresponding to the position of the power conversion component.

[0007] The second housing has multiple air inlets on both sides of its bottom, and the fan assembly is located above the multiple air inlets. The second housing has multiple air outlets on both sides of its top.

[0008] Both the air inlet and the air outlet are equipped with filters.

[0009] The bottom of the first housing is equipped with an inlet waterproof connector and an outlet waterproof connector. A vent valve is provided on the cover plate.

[0010] A first sealing strip is detachably installed at the edge where the cover plate connects to the first housing.

[0011] The radiator assembly includes a mounting bracket, on which a second sealing strip is detachably mounted within the edge where the mounting bracket connects to the second housing.

[0012] The heat sink assembly has multiple protruding fins on one side near the back plate, and a ceramic substrate is provided on the other side. The ceramic substrate is attached to the power conversion assembly through an opening in the substrate.

[0013] The heat dissipation structure also includes a front panel, which is installed on the outside of the cover plate, and the surface of the front panel is convex.

[0014] On the other hand, this utility model also provides a DC charging pile, including the aforementioned heat dissipation structure. The DC charging pile also includes a column or wall-mounted mounting assembly, with the housing disposed on the column or the wall-mounted mounting assembly.

[0015] As can be seen from the above solutions, the advantages of this utility model are:

[0016] The heat dissipation channel of this utility model adopts bottom inlet and top outlet. The hot air density is high and the cold air density is low, which conforms to the law of air flow and facilitates heat dissipation.

[0017] This invention features a turbulence fan positioned corresponding to the power conversion component. This fan not only dissipates heat from the power conversion component but also turbulents the airflow within the enclosure, facilitating heat transfer to the outside of the enclosure via the radiator assembly.

[0018] This invention features a vent valve on the cover plate. When the pressure inside the first chamber is inconsistent with the external pressure, the vent valve can keep the internal and external pressures consistent.

[0019] This invention improves the sealing performance of the first housing by setting a first sealing strip and a second sealing strip, thereby achieving the requirement of waterproofing.

[0020] The heat sink assembly of this invention maximizes the heat exchange area by attaching the fins to the power conversion assembly, and accelerates heat dissipation by increasing airflow. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of a heat dissipation structure provided in an embodiment of the present invention;

[0022] Figure 2 An exploded view of a heat dissipation structure provided in an embodiment of this utility model;

[0023] Figure 3 Another exploded view of the heat dissipation structure provided in one embodiment of this utility model;

[0024] Figure 4 for Figure 2 Enlarged view of region A in the middle;

[0025] Figure 5 This is a structural diagram of the air intake grille in a heat dissipation structure provided in an embodiment of the present invention;

[0026] Figure 6 A front view of a DC charging pile provided in another embodiment of this utility model;

[0027] Figure 7 A side sectional view of a DC charging pile provided in another embodiment of the present invention;

[0028] In the attached figures, the following labels are used:

[0029] 1-Heat dissipation structure;

[0030] 10-Box;

[0031] 100-substrate;

[0032] 1000 - Opening;

[0033] 1001 - First mounting hole

[0034] 101 - First box;

[0035] 101a - Waterproof inlet connector;

[0036] 101b - Waterproof cable outlet connector;

[0037] 102 - Second box;

[0038] 102a - Air inlet mesh panel;

[0039] 102a0 - Mounting hole;

[0040] 102a1 - First wing;

[0041] 102a2 - Second wing;

[0042] 102a3 - Third Wing;

[0043] 102a4 - Fourth Wing;

[0044] 102b - Air outlet mesh panel;

[0045] 102c - Air Inlet;

[0046] 102d - Air outlet;

[0047] 11-Cover plate;

[0048] 110 - First sealing strip;

[0049] 112 - Vent valve;

[0050] 12-Backplate;

[0051] 13-Power conversion components;

[0052] 130 - Second mounting hole;

[0053] 14-Radiator assembly;

[0054] 140 - Mounting bracket;

[0055] 141 - Second sealing strip;

[0056] 142 - Ceramic substrate;

[0057] 144-fins;

[0058] 143 - First mounting component;

[0059] 15-Fan assembly;

[0060] 16- Turbulence fan;

[0061] 160-Turbulence fan mounting bracket;

[0062] 17-Screw;

[0063] 18-Front panel;

[0064] 2-DC charging pile;

[0065] 20-Columns;

[0066] 200 - Support section;

[0067] 201-Connecting part;

[0068] 21-Charging head;

[0069] 22-Charging cable. Detailed Implementation

[0070] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.

[0071] References to "embodiment," "another embodiment," "this embodiment," etc., in the specification refer to embodiments that may include specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0072] It should be noted that in this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. While certain terms are used in the specification and subsequent claims to refer to specific components or parts, those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and claims do not distinguish components or parts by differences in name, but by differences in function. The terms "comprising" and "including" used throughout the specification and claims are open-ended and should therefore be interpreted as "including but not limited to."

[0073] like Figures 1 to 5 As shown, where Figure 1 This is a cross-sectional view of a heat dissipation structure 1 provided in an embodiment of the present invention. Figure 1 The arrows in the image indicate the direction of wind flow. Figure 2 This is an exploded view of heat dissipation structure 1; Figure 3 This is another exploded view of heat dissipation structure 1. Figure 4 for Figure 2 Enlarged view of region A in the middle. Figure 5 This is a structural diagram of the air inlet mesh plate 102a.

[0074] The heat dissipation structure 1 includes a housing 10, a cover plate 11, a back plate 12, a power conversion component 13, a heat sink assembly 14, a fan assembly 15, and a baffle fan 16. A base plate 100 is disposed within the housing 10, dividing the housing 10 into a first housing 101 and a second housing 102. The power conversion component 13 is disposed within the first housing 101, and the cover plate 11 covers the first housing 101. The heat sink assembly 14 and the fan assembly 15 are disposed within the second housing 102. An air inlet grille 102a and an air outlet grille 102b are respectively disposed at the bottom and top of the second housing 102, and the back plate 12 covers the second housing 102. At least one baffle fan 16 is disposed on the cover plate 11 corresponding to the position of the power conversion component 13. The power conversion component 13 is, for example, a DC power output module, and the baffle fan 16 is, for example, a DC baffle fan.

[0075] Specifically, the power conversion component 13 is installed on one side of the substrate 100 inside the first housing 101, and the heat sink assembly 14 and the fan assembly 15 are installed on the other side of the substrate 100 inside the second housing 102. The installation positions of the power conversion component 13 and the heat sink assembly 14 correspond to each other. Multiple first mounting members 143 are provided on the side of the heat sink assembly 14 near the housing 10. Multiple first mounting holes 1001 and second mounting holes 130 are respectively provided on the substrate 100 and the power conversion component 13. The first mounting members 143 are sequentially installed into the first mounting holes 100 and the second mounting holes 130, so that the heat sink assembly 14, the housing 10, and the power conversion component 13 are combined together. Preferably, the fan assembly 15 is located below the heat sink assembly 14, blowing air from bottom to top; the turbulence fan 16 is installed on the side of the cover plate 11 near the power conversion component 13 via a turbulence fan mounting bracket 160.

[0076] The air inlet channel adopts a bottom-in, top-out design, where hot air has a higher density and cold air has a lower density, conforming to the laws of airflow and facilitating heat dissipation. Furthermore, a turbulence fan 16 is installed at the position corresponding to the power conversion component 13. This fan not only dissipates heat from the heat-generating components on the power conversion component 13 but also turbulents the overall airflow within the first housing 101, facilitating heat conduction to the outside of the housing 10 via the radiator assembly 14. Preferably, multiple installation positions for the turbulence fan 16 can be reserved on the cover plate 11 for verifying the optimal position of the turbulence fan 16, and two turbulence fans 16 can also be placed simultaneously (e.g., ...). Figure 3 The two turbulence fan mounting brackets (160) shown increase the airflow efficiency inside the first housing 101, resulting in better heat dissipation.

[0077] In this embodiment, the air inlet mesh panel 102a includes mounting holes 102a0, a first wing 102a1, a second wing 102a2, a third wing 102a3, and a fourth wing 102a4. The mounting holes 102a0 on the first wing 102a1 are fixed to the back plate 12 by detachable fasteners (e.g., screws 17). The mounting holes 102a0 on the third wing 102a3 and the fourth wing 102a4 are fixed to the second housing 102. The second wing 102a1 is fastened to the bottom of the other side of the inner substrate 100 of the second housing 102, thus forming a four-sided recessed structure to facilitate rainwater drainage. The structure of the air outlet mesh panel 102b is the same as that of the air inlet mesh panel 102a, and will not be described further.

[0078] In this embodiment, multiple air inlets 102c are respectively provided on both sides of the bottom of the second housing 102, and multiple air outlets 102d are respectively provided on both sides of the top of the second housing 102. The fan assembly 15 is located above the multiple air inlets 102c. A filter screen (e.g., wire mesh, not shown in the figure) is welded to the sheet metal part of the air inlet 102c. The filter screen is used to filter fibrous material and prevent debris from accumulating on the fan assembly 15 and affecting the operation of the fan. A filter screen can also be provided on the air outlet 102d to prevent external debris from entering the second housing 102.

[0079] Specifically, outside cold air (i.e., cold air) flows into the second housing 102 through the air inlet grille 102a and the air inlets 102c on both sides below the second housing 102. It is then blown upwards by the fan assembly 15 to the radiator assembly 14, and finally discharged from the air outlets 102d and the exhaust grille 102b on the left and right sides above the second housing 102. During this process, the heat generated by the power conversion assembly 13 inside the first housing 101 is evenly conducted to the radiator assembly 14 by the turbulence fan 16. The cold air becomes hot air after passing through the radiator assembly 14, and is discharged through the air outlets 102d and the exhaust grille 102b, forming an independent and complete heat dissipation channel.

[0080] When the exterior of enclosure 10 is in a rainy environment, rainwater entering through the air inlet grille 102b at the top of the second enclosure 102 will flow through the radiator assembly 14 to the air inlet grille 102a for discharge. As the rainwater flows through the radiator assembly 14, it also carries away some heat. During this process, the power conversion assembly 13 inside the first enclosure 101 remains sealed, providing good waterproofing.

[0081] In another embodiment, the fan assembly 15 is mounted above the heat sink assembly 14 and below the air outlet 102d. The fan assembly 15 generates suction to draw the hot air after passing through the heat sink assembly 14 out of the air outlet 102d or the air outlet mesh 102b.

[0082] In this embodiment, an integral first sealing strip 110 is detachably installed at the edge where the cover plate 11 connects to the first housing 101. The radiator assembly 14 includes a mounting bracket 140, which is installed on the other side of the inner substrate 100 of the second housing 102. A groove (not shown) is provided at the edge where the mounting bracket 140 connects to the second housing 102, and a second sealing strip 141 is detachably installed in the groove. The second sealing strip 141 may also be integral.

[0083] Specifically, the first sealing strip 110 is adhered to the cover plate 11 and connected to the first housing 101 via a detachable fastener, such as a screw 17, to form a sealed first housing 101. A second sealing strip 141 is mounted on the mounting bracket 140 of the radiator assembly 14 and connected to the second housing 102 via another detachable fastener, such as a screw (not shown), thus further sealing the first housing 101 to achieve waterproofing.

[0084] In this embodiment, the heat sink assembly 14 has a plurality of protruding fins 144 on one side near the back plate 12, and a ceramic substrate 142 is provided on the other side. The ceramic substrate 142 is attached to the power conversion assembly 13 through the opening 1000 of the substrate 100.

[0085] Specifically, the substrate 100 has an opening 1000; the ceramic substrate 142 passes through the opening 1000 and is attached to the heating device on the power conversion assembly 13, and the gap between the ceramic substrate 142 and the power conversion assembly 13 is filled with a heat-conducting medium. The fins 144 and the ceramic substrate 142 can maximize the heat exchange area and accelerate heat dissipation by increasing airflow.

[0086] In this embodiment, the cover plate 11 is provided with a vent valve 112. When the pressure inside the sealed first housing 101 is inconsistent with the external pressure, the vent valve 112 is adjusted to make the pressure inside and outside the first housing 101 consistent.

[0087] In this embodiment, the bottom end of the first housing 101 is provided with an inlet waterproof connector 101a and an outlet waterproof connector 101b. The inlet wire of the power conversion component 13 enters the interior of the first housing 101 through the inlet waterproof connector 101a, and the outlet wire exits through the outlet waterproof connector 101b.

[0088] In this embodiment, the heat dissipation structure 1 further includes a front panel 18 (in Figure 6 and Figure 7 As shown in the figure, the front panel 18 is mounted on the outside of the cover plate 11. The surface of the front panel 18 is convex, which makes the heat dissipation structure 1 more aesthetically pleasing.

[0089] The heat dissipation structure 1 provided by this utility model has air intake from the bottom air intake mesh plate 102a and the left and right side air intakes 102c near the bottom of the box 10, and air outlet from the top air outlet mesh plate 102b and the left and right side air outlets 102d near the top of the box 10. The air duct direction is bottom inlet and top outlet. The hot air density is high and the cold air density is low, which conforms to the law of air flow and facilitates heat dissipation.

[0090] The power conversion component 13 is completely sealed within the first housing 101. The sealing structure is simple and compact, facilitating a reduction in overall size. In its layout, high-power heat-generating devices (such as transistors, integrated circuits, capacitors, and inductors) can be mounted on the upper part of the power conversion component 13, near the air outlet 102d. The heat generated by the power conversion component 13 during operation is transferred from inside the housing 101 to the outside of the housing 101 via the shortest path. The area affected by heat diffusion is small, which is beneficial for heat dissipation. Because the heat dissipation duct is completely isolated from the power conversion component 13, in case of rain, rainwater flows from the top through the air outlet grille 102b, the heat sink assembly 14, and the air inlet grille 102a to the outside of the housing 101, carrying away the heat generated by the power conversion component 13.

[0091] like Figure 6 and Figure 7 As shown, Figure 6 This is a front view of a DC charging pile 2 provided in another embodiment of the present invention. Figure 7 This is a side sectional view of the DC charging station 2. The DC charging station 2 is equipped with the aforementioned heat dissipation structure 1.

[0092] In this embodiment, the DC charging pile 2 also includes a column 20. The housing 10 of the heat dissipation structure 1 is installed on the column 20. In order to improve stability, the column 20 is designed as an inverted T-shape. The column 20 includes a support part 200 and a connecting part 201. The support part 200 directly contacts the ground or the mounting platform (not shown in the figure). The two ends of the connecting part 201 are respectively connected to the support part 200 and the housing 10.

[0093] In another embodiment, the DC charging station 2 further includes a wall-mounting assembly (not shown). The housing 10 of the heat dissipation structure 1 is mounted on the wall-mounting assembly, which mounts the DC charging station 2 onto a wall or other vertical surface. The wall-mounting assembly includes, for example, a wall panel or bracket, which is fixed to the wall using bolts or anchors.

[0094] The DC charging station 2 also includes a charging head 21, which is connected to a waterproof connector 101b via a charging cable 22. The power conversion component 13 is, for example, a DC power output module, and the turbulence fan 16 is, for example, a DC turbulence fan.

[0095] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms fall within the protection scope of the present invention.

Claims

1. A heat dissipation structure, characterized in that, include: A housing (10) is provided inside the housing (10), and the substrate (100) divides the housing (10) into a first housing (101) and a second housing (102). Back panel (12), which covers the second housing (102); A power conversion component (13) is installed inside the first housing (101); The second housing (102) is provided with a radiator assembly (14) and a fan assembly (15), the fan assembly (15) being located below the radiator assembly (14), and the bottom and top of the second housing (102) are respectively provided with an air inlet mesh plate (102a) and an air outlet mesh plate (102b); The radiator assembly (14) includes a mounting bracket (140) and a second sealing strip (141) is detachably mounted inside the edge of the mounting bracket (140) at the connection with the second housing (102); The heat sink assembly (14) has multiple protruding fins (144) on one side near the back plate (12), and a ceramic substrate (142) is provided on the other side. The ceramic substrate (142) is attached to the power conversion assembly (13) through the opening (1000) of the substrate (100).

2. The heat dissipation structure according to claim 1, characterized in that, It also includes a cover plate (11) that covers the first housing (101), and at least one turbulence fan (16) is provided on the cover plate (11) corresponding to the position of the power conversion component (13).

3. The heat dissipation structure according to claim 2, characterized in that, The second housing (102) has multiple air inlets (102c) on both sides of its bottom, and the fan assembly (15) is located above the multiple air inlets (102c). The second housing (102) has multiple air outlets (102d) on both sides of its top.

4. The heat dissipation structure according to claim 2, characterized in that, The bottom of the first housing (101) is provided with an inlet waterproof connector (101a) and an outlet waterproof connector (101b); the cover plate (11) is provided with a vent valve (112).

5. The heat dissipation structure according to claim 2, characterized in that, A first sealing strip (110) is detachably installed at the edge where the cover plate (11) connects to the first housing (101).

6. The heat dissipation structure according to claim 2, characterized in that, It also includes a front panel (18) mounted on the outside of the cover plate (11), the surface of the front panel (18) being convex.

7. A DC charging pile, characterized in that, The heat dissipation structure includes any one of claims 1 to 6.

8. The DC charging pile according to claim 7, characterized in that, It also includes a column (20) or a wall-mounted mounting assembly, wherein the housing (10) is disposed on the column (20) or the wall-mounted mounting assembly.

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