New energy automobile charging pile metal plate shell and charging pile

Abstract

The invention discloses a new energy automobile charging pile metal plate shell and a charging pile, and relates to the technical field of charging piles and power electronic heat dissipation. The shell comprises a metal plate body, a mounting hole is formed in the metal plate body, and a guide supporting mechanism is mounted. The guide supporting mechanism comprises an outer pipe, an inner pipe and an annular inner blocking piece which are concentrically sleeved, and an annular groove is defined by the outer pipe, the inner pipe and the annular inner blocking piece. The inner pipe protrudes out of the metal plate and is provided with an outer blocking piece. The side wall of the inner pipe and the inner blocking piece are provided with axial heat dissipation holes and radial heat dissipation holes respectively, and the axial heat dissipation holes and the radial heat dissipation holes are communicated to form axial-radial folded L-shaped through holes. And a tooth-shaped meshed embedded block is arranged in a gap between the outer pipe and the inner pipe. The inner side of the metal plate is provided with a reinforcing panel formed by hexagonal prism-shaped reinforcing pipes connected through connecting ribs, and the reinforcing pipes extend into the inner pipe and abut against the outer blocking pieces. Omni-directional wind collection and heat dissipation can be achieved, the tooth-shaped meshing mechanism and the honeycomb-shaped inner supporting framework are combined to greatly improve the collapse resistance and collision resistance of the perforated area, and the balance problem between high-efficiency heat dissipation and high physical strength is solved.

Description

Technical Field

[0001] This invention relates to the field of supporting facilities technology for new energy vehicles, specifically to a sheet metal shell for a new energy vehicle charging pile and a charging pile using the shell. Background Technology

[0002] During operation, the internal power modules of new energy vehicle charging piles generate a significant amount of heat, requiring ventilation holes in the sheet metal casing to facilitate air convection. Existing sheet metal opening methods mostly involve directly stamped through holes or louvered structures. These structures have the following drawbacks: First, large openings reduce the cross-sectional modulus of the sheet metal body, weakening the mechanical strength of the casing and making the opening area prone to collapse or cracking upon impact. Second, simple planar openings restrict the direction of airflow capture; when the external wind direction is not directly perpendicular to the opening plane, heat dissipation efficiency is low. Therefore, how to achieve efficient multi-dimensional heat dissipation while ensuring the structural strength of the casing is a problem that needs to be solved in the current sheet metal design of charging piles. Summary of the Invention

[0003] The main objective of this invention is to provide a sheet metal shell and charging pile for new energy vehicles, in order to solve the problems of low strength and limited heat dissipation efficiency of existing heat dissipation opening structures.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a sheet metal shell for a new energy vehicle charging pile, comprising a sheet metal body, wherein a plurality of mounting holes are provided on the sheet metal body, and a guide support mechanism is installed in the mounting holes; The guiding support mechanism includes: The outer tube has one end flush with the outer surface of the sheet metal body, and the other end passes through the mounting hole and protrudes from the inner side of the sheet metal body. An inner tube is concentrically disposed inside the outer tube. One end of the inner tube is flush with the end of the outer tube located inside the sheet metal body. An annular inner baffle is provided between the flush ends of the two tubes. The outer tube, the inner baffle, and the inner tube together form an annular groove. The other end of the inner tube passes through the mounting hole and protrudes from the outside of the sheet metal body, and an outer baffle is provided to seal the end of the inner tube that protrudes from the outside. The inner tube has multiple axial heat dissipation holes on its side wall, and the inner baffle has multiple radial heat dissipation holes. Each of the axial heat dissipation holes is connected to one of the radial heat dissipation holes and forms an L-shaped through hole.

[0005] Furthermore, a plurality of embedded blocks arranged in a ring array are provided in the gap between the outer tube and the inner tube.

[0006] Furthermore, the embedded block is in contact with both the outer tube and the inner tube through a toothed structure that meshes with each other.

[0007] Furthermore, an inner support reinforcement panel is provided on the inner side of the sheet metal body, and the inner support reinforcement panel includes multiple reinforcing tubes.

[0008] Furthermore, the reinforcing tube has a hexagonal prism structure.

[0009] Furthermore, the various reinforcing tubes are connected by connecting ribs.

[0010] Furthermore, one end of the reinforcing tube extends into the interior of the inner tube and abuts against the outer baffle, and the reinforcing tube is a hollow shell structure tangent to the inner tube.

[0011] The present invention also provides a new energy vehicle charging pile, which includes the above-mentioned new energy vehicle charging pile sheet metal shell.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. Mechanical protection and structural stability: (1) By keeping the portion of the inner tube protruding from the outside of the sheet metal body with a shorter cantilever length, a shorter torque is achieved when subjected to radial external force, thus reducing the risk of the inner tube breaking.

[0013] (2) By combining the reinforcement effect of the inner baffle with the axial compression or tension resistance of the outer tube, the axial inward or outward pressure is effectively resisted; at the same time, since the inner tube protrudes outward from the sheet metal body, the external force is resisted by the guide support mechanism first, thus avoiding the sheet metal body from being directly subjected to force, which plays a protective role.

[0014] (3) The mechanical support provided by the embedded block and the reinforcing tube from the inner and outer sides respectively is used to reinforce the area around the mounting hole, effectively preventing the opening from collapsing under pressure.

[0015] (4) By setting a toothed interlocking embedded block in the annular gap between the outer tube and the inner tube, the physical constraint on the relative displacement between the nested tubes is realized, which improves the overall stability of the guide support mechanism under complex loads.

[0016] 2. Fluid dynamics and heat dissipation performance: (1) By extending a portion of the axial heat dissipation holes to the outside of the sheet metal body, the tangential wind flowing on the surface of the sheet metal body is captured and guided.

[0017] (2) By setting the radial heat dissipation holes on the inner baffle, the airflow blowing vertically toward the sheet metal body is directly captured; and when the vertical airflow is blocked and diffuses along the sheet metal surface to the surrounding area and becomes tangential wind, the convex axial heat dissipation holes can capture and introduce the diffused airflow again, thereby increasing the air intake under wind conditions in all directions.

[0018] (3) The L-shaped air duct structure with axial-radial turning is used to guide the air path, so that the heat dissipation structure can adapt to the coordinated introduction of vertical wind and tangential wind at the same time, and improve the natural convection heat transfer efficiency.

[0019] 3. Safety protection and subsequent maintenance: (1) By using a modular design where the guide support mechanism is independently installed in the mounting hole, the opening density can be adjusted according to the heat generated in different parts, and partial replacement can be achieved when a single unit is damaged, thus reducing maintenance costs. Attached Figure Description

[0020] Figure 1 This is a partial front view of the mounting hole location in the sheet metal shell of a new energy vehicle charging pile according to the present invention; Figure 2 This is a partial back view of the mounting hole location in the sheet metal housing of a new energy vehicle charging pile according to the present invention; Figure 3 This is a schematic diagram of the array arrangement of the reinforcing tubes connected to each other by connecting ribs in this invention; Figure 4 This is a perspective view of the guide support mechanism and the sheet metal body after assembly in this invention. Figure 5 This is a three-dimensional view of the internal perspective of the guide support mechanism and the sheet metal body after assembly in this invention. Figure 6 This is a cross-sectional view of the guide support mechanism in this invention at the mounting hole.

[0021] In the diagram: 1. Sheet metal body; 2. Mounting hole; 3. Connecting rib; 4. Reinforcing tube; 5. Outer tube; 6. Inner baffle; 7. Inner tube; 8. Outer baffle; 9. Embedded block; 10. Axial heat dissipation hole; 11. Radial heat dissipation hole. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Reference Figures 1 to 6 This invention discloses a sheet metal shell for a new energy vehicle charging pile, including a sheet metal body 1, on the surface of which multiple mounting holes 2 are formed. A guide support mechanism is installed in each mounting hole 2, which is composed of an outer tube 5, an inner tube 7, an inner baffle 6, an outer baffle 8, an embedded block 9, and a tube wall structure with heat dissipation holes.

[0027] Specifically, the outer diameter of the outer tube 5 matches the diameter of the mounting hole 2. One end of the outer tube 5 is open and flush with the outer surface of the sheet metal body 1. The body of the outer tube 5 extends through the mounting hole 2 to the inside of the sheet metal body 1, i.e., inside the charging pile. The inner tube 7 is concentrically nested within the internal space of the outer tube 5. The end of the inner tube 7 extending into the inside of the sheet metal body 1 is on the same plane as the inner end of the outer tube 5. An annular inner baffle 6 is provided between the flush ends of the two tubes. The outer peripheral edge of the inner baffle 6 is fixed to the outer tube 5, and the inner peripheral edge is fixed to the inner tube 7, thereby forming an annular groove between the outer wall of the inner tube 7, the inner wall of the outer tube 5, and the surface of the inner baffle 6.

[0028] The inner tube 7 has a certain axial span, and its other end passes through the mounting hole 2 and protrudes from the outer space of the sheet metal body 1. This protruding end of the inner tube 7 is sealed by the outer baffle 8. To achieve air exchange, an axial heat dissipation hole 10 is provided on the side wall of the inner tube 7 located outside the sheet metal body 1, while a radial heat dissipation hole 11 is provided on the inner baffle 6 located inside the sheet metal body 1 for balanced heat dissipation. Since the inner tube 7 protrudes from the outer shell surface, and part of the axial heat dissipation hole 10 is located on the outer side of the sheet metal body 1, this structure can capture the parallel tangential wind flowing along the surface of the sheet metal body 1. When natural wind blows vertically towards the sheet metal body 1, the obstructed fluid will diffuse along the sheet metal surface to form a secondary tangential flow. The protruding axial heat dissipation hole 10 can capture and guide this diffused airflow again. At the same time, the radial heat dissipation hole 11 provided on the inner baffle 6 can directly receive vertically blown air into the inner side of the charging pile. The axial heat dissipation hole 10 and the radial heat dissipation hole 11 are interconnected and form a folded L-shaped flow path. The airflow can enter and exit and exchange inside and outside the charging pile through either the axial heat dissipation hole 10 or the radial heat dissipation hole 11.

[0029] In terms of mechanical structure, multiple embedded blocks 9 are arranged in an array within the annular groove between the outer tube 5 and the inner tube 7. The contact surfaces of the embedded blocks 9 and the corresponding tube walls of the outer tube 5 and the inner tube 7 are in contact with each other using a toothed structure. This meshing structure increases the frictional resistance and mechanical interlocking force between the components. When the equipment is subjected to radial load, the embedded blocks 9 can evenly distribute the pressure on the two tubes. The cantilever section of the inner tube 7 protruding to the outside is designed to be relatively short. According to the lever principle, its bending moment under force is small. Combined with the constraint of the tube end position by the inner baffle 6, the inner tube 7 is not easy to break when it is impacted. In addition, since the inner tube 7 protrudes from the outside of the sheet metal body 1, when the equipment is subjected to external impact, the inner tube 7 can resist the external force before the sheet metal body 1, thus playing a protective role. When subjected to axially inward external force, it is resisted by the reinforcement of the inner baffle 6 and the tensile strength of the outer tube 5; when subjected to axially outward external force, it is counteracted by the reinforcement of the inner baffle 6 and the axial compressive strength of the outer tube 5.

[0030] To further address the mechanical stress that the charging pile's outer shell may experience, an inner support reinforcement panel is fitted to the inner side of the sheet metal body 1. This panel consists of multiple hollow hexagonal prism-shaped reinforcing tubes 4 and connecting ribs 3. The shape of each reinforcing tube 4 is tangentially fitted to the inner cavity shape and size of the inner tube 7. One end of the reinforcing tube 4 is inserted into the inner tube 7 from the inside of the sheet metal body 1 and extends to contact the inner wall of the outer baffle 8. The reinforcing tubes 4 are connected by rigid connecting ribs 3, forming a honeycomb-like grid support system. When the outer baffle 8 is subjected to an axial inward impact force, the pressure is directly transmitted to the internal support frame through the reinforcing tubes 4, bypassing the sheet metal body 1 itself. Combined with the inner support provided by the embedded block 9, this effectively prevents the mounting hole 2 and its surrounding sheet metal area from collapsing, ensuring that the entire mechanism exhibits stable structural balance when facing loads in all directions.

[0031] In summary, this invention establishes a technical system with dual functions of heat dissipation guidance and structural reinforcement by setting a guiding support mechanism consisting of an outer tube 5, an inner tube 7, an inner baffle 6, and an outer baffle 8 at the mounting hole 2 of the sheet metal body 1, and combining it with a toothed interlocking insert block 9 and a reinforcing panel consisting of an inner reinforcing tube 4 and a connecting rib 3. This solution utilizes the synergistic effect of the protruding inner tube 7 and its axial heat dissipation holes 10 on its sidewall, and the radial heat dissipation holes 11 on the inner baffle 6 to effectively capture tangential and vertical winds, ensuring the heat dissipation efficiency of the charging pile under wind conditions in all directions. Simultaneously, through a multi-layered nested structure, a short-moment design, and an internal support transmission path, the load-bearing capacity of the opening area is significantly enhanced, effectively preventing structural collapse under external impact, and achieving a balance between high-efficiency heat dissipation and high physical strength.

[0032] This embodiment also provides a new energy vehicle charging pile that uses the above-mentioned sheet metal shell. By arranging multiple guide support mechanisms in an array according to the heat distribution position of the internal components, it achieves efficient cooling of the internal power electronic module while maintaining the high protection level and high structural strength of the shell.

[0033] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A sheet metal shell for a new energy vehicle charging pile, characterized in that, Includes a sheet metal body (1), on which a plurality of mounting holes (2) are provided, and a guide support mechanism is installed in the mounting holes (2); The guiding support mechanism includes: The outer tube (5) has one end flush with the outer surface of the sheet metal body (1) and the other end passes through the mounting hole (2) and protrudes from the inner side of the sheet metal body (1). The inner tube (7) is concentrically arranged inside the outer tube (5). One end of the inner tube (7) is flush with the end of the outer tube (5) located inside the sheet metal body (1). An annular inner baffle (6) is provided between the flush ends of the two tubes. The outer tube (5), the inner baffle (6) and the inner tube (7) together form an annular groove. The other end of the inner tube (7) passes through the mounting hole (2) and protrudes from the outside of the sheet metal body (1), and the end of the inner tube (7) protruding from the outside is sealed with an outer baffle (8). The inner tube (7) has multiple axial heat dissipation holes (10) on its side wall, and the inner baffle (6) has multiple radial heat dissipation holes (11). Each axial heat dissipation hole (10) is connected to a radial heat dissipation hole (11) and forms an L-shaped through hole.

2. The sheet metal housing of a new energy vehicle charging pile according to claim 1, characterized in that: Multiple embedded blocks (9) arranged in a ring array are provided in the gap between the outer tube (5) and the inner tube (7).

3. The sheet metal housing of a new energy vehicle charging pile according to claim 2, characterized in that: The embedded block (9) is in contact with the outer tube (5) and the inner tube (7) through a toothed structure that meshes with each other.

4. The sheet metal housing of a new energy vehicle charging pile according to claim 1, characterized in that: The inner side of the sheet metal body (1) is provided with an inner layer support and reinforcement panel, which includes multiple reinforcement tubes (4).

5. The sheet metal housing of a new energy vehicle charging pile according to claim 4, characterized in that: The reinforcing tube (4) has a hexagonal prism structure.

6. The sheet metal housing of a new energy vehicle charging pile according to claim 4, characterized in that: Each of the reinforcing tubes (4) is connected by a connecting rib (3).

7. The sheet metal housing of a new energy vehicle charging pile according to claim 4, characterized in that: One end of the reinforcing tube (4) extends into the interior of the inner tube (7) and abuts against the outer baffle (8), and the reinforcing tube (4) is a hollow structure tangent to the inner tube (7).

8. A charging pile for new energy vehicles, characterized in that: Includes the sheet metal housing of the new energy vehicle charging pile as described in any one of claims 1 to 7.

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