Power converter die cast structure with electromagnetic shielding properties

Abstract

The utility model discloses a power converter die casting structural member with electromagnetic shielding performance, it includes: base, the upper surface fixed connection of base has two vertical boards opposite left and right and an iron core between two vertical boards, the surface fixed connection of being located left side vertical board has filter, the surface fixed connection of filter has binding post, the top of base is provided with the envelope, and the left and right two surfaces of envelope are provided with the butt joint gap, and the inside butt joint gap of vertical board is located, the upper surface fixed connection of envelope has a plurality of cooling fins, and the lower end fixed connection of envelope has the flange, the upper surface of base is provided with the socket recess, and the surface of base and the surface of flange all are provided with socket opening, and the inside socket opening in base is provided with the cooling fin. Through above -mentioned structure, improve the convenience of dismouting transformer, and improve the heat dissipation efficiency of transformer die casting structural member.

Description

Technical Field

[0001] This utility model relates to the technical field of die-cast structural components for power converters, and in particular to a die-cast structural component for a power converter with electromagnetic shielding performance. Background Technology

[0002] In automotive chargers, the power converter is a core component. Traditional die-cast power converters are mostly assembled using bolt or snap-fit ​​connections. While bolt connections can ensure a certain connection strength, the installation and disassembly process is cumbersome and time-consuming. Furthermore, repeated disassembly and assembly can easily lead to issues such as stripped threads, affecting the reliability of the connection. Snap-fit ​​connections are relatively simple to operate, but the connection is not tight enough, and the reduced sealing performance will affect the electromagnetic shielding performance. At the same time, the power converter generates a lot of heat during operation. Although the surface of the die-cast power converter is equipped with heat dissipation fins to assist in heat dissipation, the heat dissipation fins cannot directly contact the heat source, resulting in reduced heat conduction. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a die-cast structural component for a power converter with electromagnetic shielding performance. The mortise and tenon structure improves the compactness and ease of assembly and disassembly of the die-cast structural component after assembly, while increasing the contact effect between the heat sink and the heat source of the die-cast structural component, thereby improving the heat conduction effect of the heat sink component of the die-cast structural component.

[0004] This utility model also provides a die-cast structural component for a power converter with the aforementioned electromagnetic shielding performance, comprising: a base, on the upper surface of which two opposing vertical plates and an iron core located between the two vertical plates are fixedly connected; a filter is fixedly connected to the surface of the left vertical plate, and a terminal block is fixedly connected to the surface of the filter; a cover is provided above the base, and the left and right surfaces of the cover have mating notches; the vertical plates are located inside the mating notches; multiple heat dissipation fins are fixedly connected to the upper surface of the cover; a protruding edge is fixedly connected to the lower end of the cover; a socket groove is provided on the upper surface of the base, and the protruding edge is located inside the socket groove; socket openings are provided on both the surface of the base and the surface of the protruding edge, and the socket openings penetrate the front and rear surfaces of the base; a heat dissipation fin is provided inside the socket opening in the base, and the surface of the heat dissipation fin contacts the inner wall of the protruding edge and the socket opening in the base. The mortise and tenon structure is formed by socket pressing, improving the ease of assembly and disassembly of the die-cast structural component for the power converter, improving the compactness between the components of the die-cast structural component itself, and improving the heat dissipation effect.

[0005] According to the die-cast structural component of the power converter with electromagnetic shielding performance described in this utility model, both the left wall of the casing and the convex edge are provided with limiting openings, and the right end of the filter contacts the inner wall of the limiting opening. This improves the convenience of disassembling and assembling the casing.

[0006] According to the present invention, in a die-cast structural component for a power converter with electromagnetic shielding performance, the length of the heat sink is greater than the width of the base, and the front and rear ends of the heat sink protrude from the front and rear surfaces of the base. Furthermore, when the converter is in use, the front and rear ends of the heat sink are bent vertically. This improves the effectiveness of the heat sink.

[0007] According to the die-cast structural component of the power converter with electromagnetic shielding performance described in this utility model, the upper surface of the heat sink is provided with a bending groove, which extends through both the left and right surfaces of the heat sink. This improves the ease of bending the heat sink.

[0008] According to the die-cast structural component of the power converter with electromagnetic shielding performance described in this utility model, a rubber ring is provided on the surface of the heat sink, and the rubber ring is located inside the bending groove. This improves the sealing effect at the heat sink socket.

[0009] According to the present invention, a die-cast structural component for a power converter with electromagnetic shielding performance is provided, wherein a receiving shell is slidably connected to the surface of the sealing shell, and the bent portion of the heat sink is located inside the receiving shell. This improves the stability of the heat sink during operation.

[0010] According to the present invention, the die-cast structural component of a power converter with electromagnetic shielding performance includes a housing made of thermally conductive silicone, with the left surface of the housing in contact with the upper surface of the left end of the filter. This improves the effectiveness of the housing.

[0011] Beneficial effects:

[0012] This technical solution provides a die-cast power converter structural component with electromagnetic shielding performance. Through features such as raised edges, socket grooves, socket openings, butt joint notches, bending grooves, and a housing shell, the mortise and tenon structure enhances the ease of assembly and disassembly of the die-cast power converter structural component. It increases the contact area between the heat sink and the heat source of the die-cast power converter structural component, improving the heat conduction effect of the heat sink. Furthermore, the rubber ring, in conjunction with the filter, enhances the sealing at the joints of the die-cast power converter structural component and incorporates the characteristics of the filter, thereby improving the electromagnetic shielding performance of the die-cast power converter structural component. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a top-view structural diagram of the disassembled die-cast structural component of the power converter with electromagnetic shielding performance according to this utility model.

[0015] Figure 2 This is a top-rear view of the disassembled die-cast structural component of the power converter with electromagnetic shielding performance according to this utility model.

[0016] Figure 3 This invention relates to a die-cast structural component for a power converter with electromagnetic shielding properties. Figure 2 Enlarged structural diagram at point B;

[0017] Figure 4 This is a top view of the assembled die-cast structural component of the power converter with electromagnetic shielding performance according to this utility model.

[0018] Legend:

[0019] 1. Base; 2. Vertical plate; 3. Iron core; 4. Connector; 5. Socket groove; 6. Shell; 7. Docking notch; 8. Limiting opening; 9. Heat dissipation fins; 10. Raised edge; 11. Storage shell; 12. Heat dissipation fins; 13. Socket opening; 14. Filter; 15. Rubber ring; 16. Bending groove. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Reference Figure 1-4 This utility model embodiment discloses a die-cast structural component for a power converter with electromagnetic shielding performance, comprising: a base 1, with two opposing vertical plates 2 and an iron core 3 located between the two vertical plates 2 fixedly connected to the upper surface of the base 1. The vertical plates 2 and the base 1 are die-cast integral structures. A filter 14 is fixedly connected to the surface of the left vertical plate 2. The filter 14 is used to increase the electromagnetic shielding of the die-cast power converter. A terminal block 4 is fixedly connected to the surface of the filter 14. A cover 6 is provided above the base 1. The cover 6 is used to isolate the iron core 3. The left and right surfaces of the cover 6 are provided with mating notches 7. The mating notches 7 are used to increase the compactness between the cover 6 and the vertical plates 2. The vertical plates 2 are located inside the mating notches 7. Multiple heat dissipation fins 9 are fixedly connected to the upper surface of the cover 6. The heat dissipation fins 9 improve heat dissipation efficiency.

[0022] Specifically, the casing 6 is pressed down directly to seal the space between the base 1 and the two vertical plates 2. Before sealing the space above the base 1 with the casing 6, the power cable connected to the iron core 3 is fixed to the terminal 4 on the right end of the filter 14, and the external power cable is fixed to the terminal 4 on the left end of the filter 14. When the power converter is working, the heat generated by the iron core 3 is dispersed in the casing 6. After the hot air comes into contact with the casing 6, the heat dissipation fins 9 of the casing 6 are used to increase the efficiency of its natural heat dissipation.

[0023] The lower end of the casing 6 is fixedly connected to a protruding edge 10. Both the casing 6 and the left wall of the protruding edge 10 are provided with limiting openings 8. The right end of the filter 14 is in contact with the inner wall of the limiting opening 8. The upper surface of the base 1 is provided with a socket groove 5. The protruding edge 10 is located inside the socket groove 5. The protruding edge 10 and the socket groove 5 cooperate to simply fix the casing 6 to the surface of the base 1. Both the surface of the base 1 and the surface of the protruding edge 10 are provided with socket openings 13. The socket openings 13 penetrate the front and rear surfaces of the base 1. A heat sink 12 is provided inside the socket opening 13 in the base 1. The surface of the heat sink 12 is in contact with the protruding edge 10 and the inner wall of the socket opening 13 in the base 1. The heat sink 12 cooperates with the socket opening 13 to increase the restriction effect on the casing 6 and improve the stability of the casing 6 when it is in operation.

[0024] Specifically, when assembling the die-cast structural components of the power converter, during the falling process of the casing 6, the protruding edge 10 at its lower end enters the interior of the socket groove 5. After the protruding edge 10 is fully inserted into the socket groove 5, the protruding edge 10 is opposite to the socket opening 13 on the surface of the base 1, and then pushes the heat sink 12 through the socket opening 13. After the heat sink 12 is fully inserted through the socket opening 13, the front and rear ends of the heat sink 12 are flipped upward.

[0025] The length of the heat sink 12 is greater than the width of the base 1. The front and rear ends of the heat sink 12 protrude from the front and rear surfaces of the base 1. When the converter is used, the front and rear ends of the heat sink 12 are bent vertically. A bending groove 16 is provided on the upper surface of the heat sink 12. The bending groove 16 passes through the left and right surfaces of the heat sink 12. The bending groove 16 improves the smoothness of bending the heat sink 12. A rubber ring 15 is provided on the surface of the heat sink 12. The rubber ring 15 is located inside the bending groove 16. The rubber ring 15 is used to fill the gaps where the front and rear surfaces of the sealed base 1 are penetrated by the insertion opening 13. A storage shell 11 is slidably connected to the surface of the shell 6. The bent part of the heat sink 12 is located inside the storage shell 11. The storage shell 11 is made of thermally conductive silicone. The left surface of the storage shell 11 contacts the upper surface of the left end of the filter 14. The storage shell 11 is used to fix the bent part of the heat sink 12 to the surface of the shell 6.

[0026] Specifically, during the installation of the heat sink 12, ensure that the two bending grooves 16 on the surface of the heat sink 12 are aligned with the front and rear surfaces of the base 1, and then stop pushing the heat sink 12. At this time, bend the front and rear ends of the heat sink 12 upward according to the bending grooves 16 on the surface of the heat sink 12 until the bent part of the heat sink 12 is on the surface of the housing 6. Then press down the housing 11 so that the upper end of the bent part of the heat sink 12 enters the interior of the housing 11. The friction between the silicone material and the heat sink 12 increases the stability of the bent part of the heat sink 12.

[0027] Working principle: After the power cord is connected, the cover 6 is pressed down to isolate the iron core 3. Then, the cover 6, which is snapped into the base 1, is reinforced by the heat sink 12. At the same time, the storage shell 11 is pressed down to fix the bent part of the heat sink 12. When bending the heat sink 12, since the rubber ring 15 is located inside the bending groove 16, the rubber ring 15 is deformed under force and completely fills the socket openings 13 on the front and rear surfaces of the base 1, thereby improving the sealing effect of the heat sink 12 installation. When the converter is working, since the heat sink 12 is located below the iron core 3, the heat generated by the iron core 3 is directly transferred to the base 1. The high thermal conductivity of the heat sink 12 directly transfers the heat received by the base 1. Since the front and rear ends of the heat sink 12 are exposed, the heat transferred by the heat sink 12 to the base 1 comes into contact with the outside through the front and rear ends of the heat sink 12. The exposed part of the heat sink 12 is the surface of the cover 6, so the cover 6 also assists the heat sink 12 in heat dissipation.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A die-cast structural component for a power converter with electromagnetic shielding properties, characterized in that, include: A base (1) is fixedly connected to two vertical plates (2) facing each other and an iron core (3) located between the two vertical plates (2). A filter (14) is fixedly connected to the surface of the left vertical plate (2). A connector (4) is fixedly connected to the surface of the filter (14). A cover (6) is provided above the base (1). A docking notch (7) is provided on the left and right surfaces of the cover (6). The vertical plate (2) is located inside the docking notch (7). A plurality of heat dissipation fins (9) are fixedly connected to the upper surface of the cover (6). The lower end of the casing (6) is fixedly connected with a protruding edge (10). The upper surface of the base (1) is provided with a socket groove (5). The protruding edge (10) is located inside the socket groove (5). The surface of the base (1) and the surface of the protruding edge (10) are both provided with socket openings (13). The socket openings (13) penetrate the front and rear surfaces of the base (1). A heat sink (12) is provided inside the socket opening (13) in the base (1). The surface of the heat sink (12) is in contact with the inner wall of the protruding edge (10) and the socket opening (13) in the base (1).

2. The die-cast structural component of the power converter with electromagnetic shielding performance according to claim 1, characterized in that, The left walls of the casing (6) and the protruding edge (10) are provided with limiting openings (8), and the right end of the filter (14) is in contact with the inner wall of the limiting opening (8).

3. The die-cast structural component of the power converter with electromagnetic shielding performance according to claim 1, characterized in that, The length of the heat sink (12) is greater than the width of the base (1). The front and rear ends of the heat sink (12) protrude from the front and rear surfaces of the base (1). When the converter is used, the front and rear ends of the heat sink (12) are bent up and down.

4. The die-cast structural component of the power converter with electromagnetic shielding performance according to claim 3, characterized in that, The upper surface of the heat sink (12) is provided with a bending groove (16), which penetrates the left and right surfaces of the heat sink (12).

5. The die-cast structural component of the power converter with electromagnetic shielding performance according to claim 4, characterized in that, A rubber ring (15) is provided on the surface of the heat sink (12), and the rubber ring (15) is located inside the bending groove (16).

6. The die-cast structural component of the power converter with electromagnetic shielding performance according to claim 5, characterized in that, The surface of the cover (6) is slidably connected to the storage shell (11), and the bent part of the heat sink (12) is located inside the storage shell (11).

7. The die-cast structural component of the power converter with electromagnetic shielding performance according to claim 6, characterized in that, The housing (11) is made of thermally conductive silicone, and the left surface of the housing (11) is in contact with the upper surface of the left end of the filter (14).

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