Switching power supply shell

Abstract

The utility model relates to the technical field of switching power supplies, in particular to a switching power supply shell, which is used for placing a power supply module, an EMC (Electro Magnetic Compatibility) filter and an EMC filter circuit and comprises an upper cover, a lower shell and radiating teeth, the lower shell is of a hollow structure with an opening at the top end, the upper cover hermetically covers the opening at the top end of the lower shell, a partition plate is arranged in a cavity of the lower shell, and the radiating teeth are arranged in the partition plate. The cavity of the lower shell is divided into a first isolation cavity and a second isolation cavity by the partition plate, the power module is arranged in the first isolation cavity, the EMC filter and the EMC filter circuit are arranged in the second isolation cavity, and the heat dissipation teeth are distributed on the front side and the bottom face of the lower shell. The switch power supply housing provided by the utility model is simple in structural design, avoids electromagnetic interference, and has low electromagnetic radiation and good heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of switching power supplies, in particular to a switching power supply housing. Background Art

[0002] In circuit systems, switching power supplies, with their compact size, high efficiency, and excellent stability, have become the mainstream technology for high-power power supplies. Due to the continuous upgrading of power electronic devices, the switching frequency and speed of switching power supplies are constantly increasing. The rapid on-off switching causes rapid changes in voltage and current. These transient voltage and current, coupled through power supply routing, parasitic parameters, and stray electromagnetic fields, can generate a large amount of electromagnetic interference. If this interference is not systematically controlled and eliminated, it will affect the normal operation of the entire equipment. In addition, given the characteristics and application environment of high-power power supplies, good heat dissipation performance is also a key guarantee for the long-term stable operation of switching power supplies. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a switching power supply housing with a simple structural design, which avoids electromagnetic interference, has low electromagnetic radiation and good heat dissipation effect.

[0004] The utility model solves the technical problem thereof by adopting the following technical solution: a switching power supply housing, used for placing a power module, an EMC filter and an EMC filtering circuit, comprising an upper cover, a lower shell and heat dissipation teeth, wherein the lower shell is a hollow structure with an open top, the upper cover sealingly covers the top opening of the lower shell, a partition is provided in the cavity of the lower shell, the partition divides the cavity of the lower shell into a first isolation cavity and a second isolation cavity, the power module is arranged in the first isolation cavity, the EMC filter and the EMC filtering circuit are arranged in the second isolation cavity, and the heat dissipation teeth are distributed on the front side and bottom surface of the lower shell.

[0005] Furthermore, the cavity of the lower shell is filled with thermal conductive glue.

[0006] Furthermore, a groove is formed on the top surface of the lower shell, a conductive rubber strip is embedded in the groove, and the conductive rubber strip contacts the bottom surface of the upper cover.

[0007] Furthermore, a ridge is provided on the bottom surface of the upper cover, and the ridge extends into the cavity of the lower shell and contacts the inner side wall of the lower shell.

[0008] Furthermore, the left and right ends of the rear side of the lower shell protrude to form lugs, and positioning holes are provided on the lugs.

[0009] Furthermore, a connecting wire groove is provided at the top of the partition.

[0010] Furthermore, a mounting groove is provided in the middle of the top right side of the lower shell, and a wiring terminal is provided in the mounting groove. The wiring terminal is installed on a fixing plate, and the fixing plate is provided in the cavity of the lower shell and connected to the inner bottom wall of the lower shell through a mounting column. A notch is provided in the middle of the right end of the upper cover to avoid the wiring terminal.

[0011] The beneficial effects of the utility model are:

[0012] (1) The utility model arranges the power module in the first isolation cavity and arranges the EMC filter and the EMC filter circuit in the second isolation cavity, thereby avoiding spatial interference between the power module and the EMC filter and the EMC filter circuit. At the same time, the heat dissipation area is increased by coordinating with the arrangement of the heat dissipation teeth, thereby achieving good heat dissipation effect and ensuring long-term stable operation of the switching power supply.

[0013] (2) The utility model improves the thermal conductivity and further enhances the heat dissipation effect by filling the cavity of the lower shell with thermal conductive glue.

[0014] (3) The utility model provides a conductive rubber strip so that the upper cover and the lower shell are in full sealed contact, shielding electromagnetic radiation within the shell, so that the switching power supply has lower electromagnetic radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is an exploded view of the utility model;

[0018] Figure 3 It is an internal view of the lower shell of the utility model;

[0019] Figure 4 It is a schematic diagram of the convex ridge in the utility model;

[0020] Figure 5 It is a circuit framework diagram of the present utility model.

[0021] In the figure: 1. Power module; 2. EMC filter; 3. EMC filter circuit; 4. Upper cover; 5. Lower shell; 6. Heat dissipation teeth; 7. Partition; 8. First isolation chamber; 9. Second isolation chamber; 10. Groove; 11. Ridge; 12. Lug; 13. Positioning hole; 14. Connection wire trough; 15. Mounting slot; 16. Wiring terminal; 17. Fixing plate; 18. Mounting column; 19. Notch. DETAILED DESCRIPTION

[0022] The present invention will now be further described with reference to the accompanying drawings, which are simplified schematic diagrams illustrating the basic structure of the present invention in a schematic manner, and thus only show components related to the present invention.

[0023] like Figure 1-Figure 3 、 Figure 5 As shown, the switching power supply housing is used to house the power module 1, EMC filter 2, and EMC filter circuit 3, and includes an upper cover 4, a lower shell 5, and heat dissipation teeth 6. The lower shell 5 is a hollow structure with an open top. The upper cover 4 seals the top opening of the lower shell 5. A partition 7 is provided within the cavity of the lower shell 5, which divides the cavity of the lower shell 5 into a first isolation cavity 8 and a second isolation cavity 9. The power module 1 is disposed within the first isolation cavity 8, and the EMC filter 2 and EMC filter circuit 3 are disposed within the second isolation cavity 9. The heat dissipation teeth 6 are distributed on the front side and bottom surface of the lower shell 5. Placing the power module 1 within the first isolation cavity 8 and the EMC filter 2 and EMC filter circuit 3 within the second isolation cavity 9 avoids spatial interference between the power module 1 and the EMC filter 2 and EMC filter circuit 3. At the same time, the provision of the heat dissipation teeth 6 increases the heat dissipation area, achieving good heat dissipation effect and ensuring long-term stable operation of the switching power supply. Specifically, the upper cover 4 and the lower shell 5 are both made of metal material, and the upper cover 4 and the lower shell 5 are connected by screws; the lower shell 5 is a cube; the partition 7 and the lower shell 5 can be assembled, and the partition 7 is "L"-shaped. A connecting wire groove 14 is opened at the top of the partition 7 to facilitate cable routing.

[0024] In order to further improve the heat dissipation effect, the cavity of the lower shell 5 is filled with thermal conductive glue to improve the thermal conductivity.

[0025] like Figure 3 As shown, the top surface of the lower shell 5 is provided with a groove 10, into which a conductive rubber strip is embedded. The conductive rubber strip contacts the bottom surface of the upper cover 4. The provision of the conductive rubber strip ensures a fully sealed contact between the upper cover 4 and the lower shell 5, shielding electromagnetic radiation within the housing and reducing electromagnetic radiation of the switching power supply.

[0026] like Figure 4 As shown, the bottom surface of the upper cover 4 is provided with a ridge 11, which extends into the cavity of the lower shell 5 and contacts the inner side wall of the lower shell 5. The provision of the ridge 11 plays a positioning role, facilitates the installation of the upper cover 4 on the lower shell 5, and further improves the sealing between the upper cover 4 and the lower shell 5.

[0027] like Figure 1 As shown, the left and right ends of the rear side of the lower shell 5 protrude to form lugs 12, and positioning holes 13 are formed in the lugs 12. The positioning holes 13 are used to fix the switching power supply. At the same time, the positioning holes 13 are formed in the lugs 12, which avoids the impact of opening holes in the lower shell 5 on the sealing performance and also facilitates the fixing of the switching power supply.

[0028] like Figure 2-Figure 4 As shown, a mounting slot 15 is defined in the middle of the top right side of the lower housing 5. Terminals 16 are located within mounting slot 15 and mounted on a fixing plate 17. Fixing plate 17 is located within the cavity of the lower housing 5 and connected to the inner bottom wall of the lower housing 5 via mounting posts 18. A notch 19 is defined in the middle of the right end of the upper cover 4 to provide access to terminal 16. This design facilitates installation of terminal 16 and enhances the aesthetics of the housing. Specifically, terminal 16 is connected to the power module 1, EMC filter 2, and EMC filter circuit 3, respectively.

[0029] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A switching power supply housing for accommodating a power module (1), an EMC filter (2) and an EMC filter circuit (3), characterized in that: The invention comprises an upper cover (4), a lower shell (5) and heat dissipation teeth (6); the lower shell (5) is a hollow structure with an open top; the upper cover (4) seals and covers the top opening of the lower shell (5); a partition (7) is provided in the cavity of the lower shell (5); the partition (7) separates the cavity of the lower shell (5) into a first isolation cavity (8) and a second isolation cavity (9); the power module (1) is arranged in the first isolation cavity (8); the EMC filter (2) and the EMC filter circuit (3) are arranged in the second isolation cavity (9); and the heat dissipation teeth (6) are distributed on the front side and bottom surface of the lower shell (5).

2. The switching power supply housing according to claim 1, characterized in that: The cavity of the lower shell (5) is filled with heat-conducting glue.

3. The switching power supply housing according to claim 1, wherein: A groove (10) is provided on the top surface of the lower shell (5), a conductive rubber strip is embedded in the groove (10), and the conductive rubber strip contacts the bottom surface of the upper cover (4).

4. The switching power supply housing according to claim 1, wherein: The bottom surface of the upper cover (4) is provided with a ridge (11), and the ridge (11) extends into the cavity of the lower shell (5) and contacts the inner side wall of the lower shell (5).

5. The switching power supply housing according to claim 1, characterized in that: The left and right ends of the rear side of the lower shell (5) protrude to form lugs (12), and positioning holes (13) are provided on the lugs (12).

6. The switching power supply housing according to claim 1, characterized in that: A connecting wire groove (14) is provided at the top end of the partition (7).

7. The switching power supply housing according to claim 1, characterized in that: A mounting groove (15) is provided in the middle of the top end on the right side of the lower shell (5), and a wiring terminal (16) is provided in the mounting groove (15). The wiring terminal (16) is installed on a fixing plate (17). The fixing plate (17) is provided in the cavity of the lower shell (5) and is connected to the inner bottom wall of the lower shell (5) through a mounting column (18). A notch (19) is provided in the middle of the right end of the upper cover (4) to avoid the wiring terminal (16).

Images