Power supply module with double filtering structures

Abstract

The utility model discloses a power supply module with a dual filtering structure, which comprises an aluminum shell, an outer support, support screws, side plates and heat dissipation holes, the two sides of the aluminum shell are connected with the two side plates through a plurality of support screws and outer support bolts, and the heat dissipation holes are equidistantly arranged on the surfaces of the side plates. According to the utility model, the design structure of the existing power supply module is improved, double physical isolation is carried out on high and low frequency interference through a double-shell structure, and meanwhile, a multi-outlet heat dissipation structure is added, so that the heat dissipation capability of the power supply module is improved.

Description

Technical Field

[0001] This utility model relates to a power module with a dual filtering structure. Background Technology

[0002] A power module is a "power conversion toolbox" that converts external electrical energy into the stable voltage and current required by a device. Through built-in components such as transformers, capacitors, and inductors, it acts like an "intelligent traffic controller" to regulate voltage levels and filter interference signals, ensuring the safe operation of electronic devices in complex power grid environments and preventing crashes, overheating, or damage caused by voltage fluctuations and electromagnetic interference. It is commonly found in chargers, adapters, industrial control systems, and other scenarios.

[0003] The power modules currently in use do not have ideal anti-interference and heat dissipation effects, which affects their lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a power module with a dual filtering structure to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A power module with a dual filtering structure includes an aluminum shell, an outer bracket, bracket screws, side plates, and heat dissipation holes. Two side plates are connected to both sides of the aluminum shell by multiple bracket screws and outer bracket bolts. Multiple heat dissipation holes are equidistantly opened on the surface of the side plates.

[0007] Based on the above technical solution, the aluminum housing includes a circuit board, a metal substrate, an input terminal, a varistor, a circuit board bracket, base plate screws, and an inner cavity. The metal substrate is fixedly connected to the center of the top of the circuit board. The input terminal is fixedly connected to the left side of the circuit board. The varistor is fixedly connected to the rear of the input terminal. Two circuit board brackets are fixedly connected at equal intervals to the bottom of the circuit board. Four base plate screws are bolted to the inside of the aluminum housing. The inner cavity is fixedly connected to the top of the metal substrate.

[0008] Based on the above technical solution, the inner cavity includes a ceramic fiber shell, wire holes, heat dissipation top openings, heat dissipation fins, an electrolytic capacitor, and a common mode inductor. Four wire holes are equidistantly opened on both sides of the front of the ceramic fiber shell. Multiple heat dissipation top openings are equidistantly opened on both sides of the top of the ceramic fiber shell. Multiple heat dissipation fins are equidistantly fixedly connected to the center of the front of the ceramic fiber shell. The electrolytic capacitor is fixedly connected to the center of the top inside the ceramic fiber shell. Two common mode inductors are respectively fixedly connected to the top sides inside the ceramic fiber shell.

[0009] Compared with the prior art, the present invention has the following advantages: The present invention improves the design structure of the existing power module, and provides double physical isolation of high and low frequency interference through the double shell structure, while adding multiple heat dissipation structures to improve the heat dissipation capacity of the power module. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the appearance and structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the internal structure of the aluminum outer shell of this utility model.

[0012] Figure 3 This is a schematic diagram of the internal cavity structure of this utility model.

[0013] In the diagram: 1. Aluminum casing, 2. Outer bracket, 3. Bracket screws, 4. Side plate, 5. Heat dissipation holes, 6. Circuit board, 7. Metal substrate, 8. Input terminal, 9. Varistor, 10. Circuit board bracket, 11. Base plate screws, 12. Inner cavity, 13. Ceramic fiber shell, 14. Wire hole, 15. Heat dissipation top opening, 16. Heat dissipation fins, 17. Electrolytic capacitor, 18. Common mode inductor. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1-3 As shown, a power module with a dual filtering structure includes an aluminum shell 1, an outer bracket 2, bracket screws 3, side plates 4, and heat dissipation holes 5. Two side plates 4 are bolted to both sides of the aluminum shell 1 by multiple bracket screws 3 and the outer bracket 2. Multiple heat dissipation holes 5 are equally spaced on the surface of the side plates 4.

[0016] The aluminum housing 1 includes a circuit board 6, a metal substrate 7, an input terminal 8, a varistor 9, a circuit board bracket 10, base plate screws 11, and an inner cavity 12. The metal substrate 7 is fixedly connected to the top center of the circuit board 6. The input terminal 8 is fixedly connected to the left side of the circuit board 6. The varistor 9 is fixedly connected to the rear of the input terminal 8. Two circuit board brackets 10 are fixedly connected at equal intervals to the bottom of the circuit board 6. Four base plate screws 11 are bolted to the inside of the aluminum housing 1. The inner cavity 12 is fixedly connected to the top of the metal substrate 7.

[0017] The inner cavity 12 includes a ceramic fiber shell 13, wire holes 14, heat dissipation top openings 15, heat dissipation fins 16, electrolytic capacitors 17, and common mode inductors 18. Four wire holes 14 are equidistantly opened on both sides of the front of the ceramic fiber shell 13. Multiple heat dissipation top openings 15 are equidistantly opened on both sides of the top of the ceramic fiber shell 13. Multiple heat dissipation fins 16 are equidistantly fixedly connected to the center of the front of the ceramic fiber shell 13. The electrolytic capacitor 17 is fixedly connected to the center of the top inside the ceramic fiber shell 13. Two common mode inductors 18 are respectively fixedly connected to the top sides inside the ceramic fiber shell 13.

[0018] The working principle of this utility model is as follows: When this utility model is working, the external power supply enters the circuit board 6 through the input terminal 8. After overvoltage protection by the varistor 9, the current passes through the dual filtering structure of the inner cavity 12: the common-mode inductor 18 suppresses high-frequency common-mode interference, and the electrolytic capacitor 17 filters out low-frequency ripple. At the same time, the physical double-shell structure formed by the aluminum shell 1 and the ceramic fiber shell 13 shields high-frequency electromagnetic interference and low-frequency conducted interference, respectively. The heat generated during operation is conducted to the aluminum shell through the metal substrate 7 and the circuit board bracket 10. Combined with the heat dissipation holes 5 on the side plate 4, the heat dissipation fins 16, and the heat dissipation top opening 15 on the top of the ceramic fiber shell, a multi-path heat dissipation is formed, realizing the synergistic work of dual electromagnetic interference isolation and efficient heat dissipation, ensuring the stable operation of the power module.

[0019] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A power module with a dual filtering structure, comprising an aluminum housing (1), an outer bracket (2), bracket screws (3), a side plate (4), and heat dissipation holes (5), characterized in that: The aluminum shell (1) has two side plates (4) connected to its sides by multiple bracket screws (3) and outer bracket (2) bolts. Multiple heat dissipation holes (5) are equally spaced on the surface of the side plates (4).

2. A power supply module with a dual filtering structure according to claim 1, characterized in that: The aluminum housing (1) includes a circuit board (6), a metal substrate (7), an input terminal (8), a varistor (9), a circuit board bracket (10), a base plate screw (11), and an inner cavity (12). The metal substrate (7) is fixedly connected to the center of the top of the circuit board (6). The input terminal (8) is fixedly connected to the left side of the circuit board (6). The varistor (9) is fixedly connected to the back of the input terminal (8). Two circuit board brackets (10) are fixedly connected at equal intervals to the bottom of the circuit board (6). Four base plate screws (11) are bolted to the inside of the aluminum housing (1). The inner cavity (12) is fixedly connected to the top of the metal substrate (7).

3. A power supply module with a dual filtering structure according to claim 2, characterized in that: The inner cavity (12) includes a ceramic fiber shell (13), wire holes (14), heat dissipation top openings (15), heat dissipation fins (16), electrolytic capacitors (17), and common mode inductors (18). Four wire holes (14) are equidistantly opened on both sides of the front of the ceramic fiber shell (13). Multiple heat dissipation top openings (15) are equidistantly opened on both sides of the top of the ceramic fiber shell (13). Multiple heat dissipation fins (16) are equidistantly fixedly connected to the center of the front of the ceramic fiber shell (13). The electrolytic capacitor (17) is fixedly connected to the center of the top inside the ceramic fiber shell (13). Two common mode inductors (18) are respectively fixedly connected to the top sides inside the ceramic fiber shell (13).

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