Capacitor for suppressing electromagnetic interference of power supply

Abstract

The utility model relates to capacitor technical field for inhibiting power supply electromagnetic interference, concretely is a kind of capacitor for inhibiting power supply electromagnetic interference, including capacitor main body, heat pipe, conductor polar plate and insulating dielectric layer, the capacitor main body inside hollow to accommodate conductor polar plate and insulating dielectric layer, the conductor polar plate is two mutually parallel metal sheets, two the conductor polar plate is respectively fixed in the upper and lower ends of capacitor main body inner wall, the insulating dielectric layer is set between two conductor polar plate. The utility model through the synergies of heat pipe and wave-shaped radiating fin, significantly improve the heat dissipation performance of capacitor, reduce the risk of capacitor internal temperature rise, prolong the service life of capacitor, insulating dielectric layer is made of multilayer different dielectric constant material composite, enhances the inhibition effect of capacitor to wide frequency band electromagnetic interference, improves the working stability of capacitor.

Description

Technical Field

[0001] This utility model relates to the technical field of capacitors for suppressing electromagnetic interference from power supplies, and in particular to a capacitor for suppressing electromagnetic interference from power supplies. Background Technology

[0002] Capacitors used to suppress electromagnetic interference from power supplies are key electronic components used to reduce electromagnetic interference generated by power supplies and ensure the stable operation of electronic equipment. They usually have special structural designs, such as shielded shells, which can effectively block the propagation of internal electromagnetic interference to the outside, while preventing external electromagnetic interference from affecting the capacitor itself and surrounding components.

[0003] Existing technologies often have the following drawbacks: the existing capacitors used to suppress electromagnetic interference in power supplies have an unreasonable structural design, resulting in poor heat dissipation performance. During long-term operation, the capacitor will generate heat due to power loss. If the heat cannot be dissipated in time, the internal temperature of the capacitor will rise, which will affect the electrical performance parameters of the capacitor, such as changes in capacitance value, and reduce the service life and reliability of the capacitor.

[0004] Therefore, this utility model provides a capacitor for suppressing electromagnetic interference in power supplies. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing capacitors in terms of inconvenient heat dissipation, and to propose a capacitor for suppressing electromagnetic interference from power supplies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a capacitor for suppressing electromagnetic interference of a power supply, comprising a capacitor body, a heat pipe, conductor plates, and an insulating dielectric layer. The capacitor body is hollow to accommodate the conductor plates and the insulating dielectric layer. The conductor plates are two parallel metal sheets, which are respectively fixed to the upper and lower ends of the inner wall of the capacitor body. The insulating dielectric layer is disposed between the two conductor plates and is composed of multiple layers of materials with different dielectric constants. Several heat dissipation fins are fixedly connected to the outer wall of the capacitor body, and the heat dissipation fins are fixed to the outer wall of the capacitor body by welding.

[0007] The effects achieved by the above components are as follows: through the synergistic effect of heat pipes and corrugated heat dissipation fins, the heat dissipation performance of the capacitor is significantly improved, the risk of internal temperature rise of the capacitor is reduced, and the service life of the capacitor is extended. The insulating dielectric layer is composed of multiple layers of materials with different dielectric constants, which enhances the capacitor's suppression effect on wide-band electromagnetic interference and improves the working stability of the capacitor.

[0008] Preferably, the heat pipe extends through the inside of the capacitor body and is tightly attached to the bottom surface of the conductor plate, with both ends of the heat pipe extending to the outer wall of the capacitor body and embedded inside the heat dissipation fins.

[0009] The effect achieved by the above components is that the heat pipe further improves the heat dissipation efficiency of the capacitor.

[0010] Preferably, the heat dissipation fins are wavy.

[0011] The effects achieved by the above components are: the wave-shaped design of the heat dissipation fins increases the heat dissipation area, and the spacing between adjacent heat dissipation fins ensures airflow.

[0012] Preferably, the heat pipe is filled with a heat-conducting liquid.

[0013] The effect achieved by the above components is that the heat-conducting liquid inside the heat pipe circulates within the heat pipe.

[0014] Preferably, the outer wall of the heat pipe is provided with a spiral groove.

[0015] The effect achieved by the above-mentioned components is that the spiral grooves improve the heat conduction efficiency.

[0016] Preferably, the surface of the heat dissipation fins is uniformly provided with a plurality of through holes.

[0017] The effect achieved by the above components is that the several through holes evenly opened on the surface of the heat dissipation fins can also promote air convection, accelerate heat dissipation, and keep the capacitor within a suitable operating temperature range.

[0018] In summary:

[0019] In this invention, the heat dissipation performance of the capacitor is significantly improved by the synergistic effect of the heat pipe and the corrugated heat dissipation fins, reducing the risk of internal temperature rise and extending the service life of the capacitor. The insulating dielectric layer is composed of multiple layers of materials with different dielectric constants, which enhances the capacitor's suppression effect on wide-band electromagnetic interference and improves the capacitor's working stability. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a structural diagram showing the disassembled parts of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the capacitor body in this utility model;

[0023] Figure 4 This is a schematic diagram of the heat dissipation fins in this utility model.

[0024] Legend: 1. Capacitor body; 2. Leads; 3. Heat sink fins; 4. Conductor plates; 5. Heat pipe; 6. Insulating dielectric layer; 7. Through hole; 8. Spiral groove. Detailed Implementation

[0025] Reference Figure 1-4 As shown, this utility model provides a technical solution: a capacitor for suppressing electromagnetic interference of power supply, including a capacitor body 1, a heat pipe 5, a conductor plate 4 and an insulating dielectric layer 6.

[0026] The following is a detailed explanation of its overall setup and function.

[0027] In this embodiment: the capacitor body 1 is hollow to accommodate the conductor plates 4 and the insulating dielectric layer 6. The conductor plates 4 are two parallel metal sheets, which are fixed to the upper and lower ends of the inner wall of the capacitor body 1, respectively. The insulating dielectric layer 6 is disposed between the two conductor plates 4 and is composed of multiple layers of materials with different dielectric constants. Several heat dissipation fins 3 are fixedly connected to the outer wall of the capacitor body 1, and the heat dissipation fins 3 are welded to the outer wall of the capacitor body 1. Through the synergistic effect of the heat pipe 5 and the corrugated heat dissipation fins 3, the heat dissipation performance of the capacitor is significantly improved, the risk of internal temperature rise is reduced, and the service life of the capacitor is extended. The insulating dielectric layer 6 is composed of multiple layers of materials with different dielectric constants, which enhances the capacitor's suppression effect on broadband electromagnetic interference and improves the capacitor's operating stability.

[0028] Specifically, the heat pipe 5 penetrates the inside of the capacitor body 1 and is tightly attached to the bottom surface of the conductor plate 4. Both ends of the heat pipe 5 extend to the outer wall of the capacitor body 1 and are embedded in the heat dissipation fins 3. The heat pipe 5 further improves the heat dissipation efficiency of the capacitor. The heat dissipation fins 3 are wavy. The wavy design of the heat dissipation fins 3 increases the heat dissipation area, and the spacing between adjacent heat dissipation fins 3 ensures airflow. The heat pipe 5 is filled with a thermally conductive liquid. The thermally conductive liquid inside the heat pipe 5 circulates within the heat pipe 5. The outer wall of the heat pipe 5 has spiral grooves 8. Several through holes 7 are evenly distributed on the surface of the heat dissipation fins 3. The several through holes 7 evenly distributed on the surface of the heat dissipation fins 3 also promote air convection, accelerate heat dissipation, and keep the capacitor within a suitable operating temperature range.

[0029] Working principle: When the capacitor used to suppress electromagnetic interference of the power supply is connected to the circuit, current flows into the conductor plate 4 through pin 2. Electrical energy is stored in the insulating dielectric layer 6 between the two conductor plates 4. Since the insulating dielectric layer 6 is composed of multiple layers of materials with different dielectric constants, when the power supply generates electromagnetic interference, the materials with different dielectric constants can effectively suppress wide-band electromagnetic interference, reducing the impact of electromagnetic interference on surrounding electronic components and ensuring the stable operation of the entire circuit system. During the operation of the capacitor, the continuous conversion of electrical energy generates heat. At this time, the heat dissipation system begins to function. First, the heat pipe 5, which is tightly attached to the bottom surface of the conductor plate 4, begins to work. The heat-conducting liquid filled inside the heat pipe 5 absorbs the heat generated by the conductor plate 4 and rapidly vaporizes, rising within the heat pipe 5. Since both ends of the heat pipe 5 extend to the outer wall of the capacitor body 1 and are embedded in the heat dissipation fins 3... In the heat pipe 5, the vaporized heat-conducting liquid rises to the heat dissipation fins 3, transferring heat to them. Upon cooling, it liquefies and, under gravity and capillary action, flows back to the bottom of the heat pipe 5 along the spiral grooves 8 on its outer wall. This cycle repeats, achieving efficient heat transfer. The wavy heat dissipation fins 3, with their unique shape, not only increase the heat dissipation area but also create a specific spacing between adjacent fins, ensuring smooth airflow. As the air flows, it continuously carries away heat from the fins 3, further enhancing the heat dissipation effect. Furthermore, the numerous through-holes 7 evenly distributed on the surface of the fins 3 promote air convection, accelerating heat dissipation and keeping the capacitor within a suitable operating temperature range. This prevents excessively high temperatures from affecting the capacitor's electrical performance parameters, ensuring stable and reliable long-term operation.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A capacitor for suppressing electromagnetic interference of a power supply, comprising a capacitor body (1), a heat pipe (5), a conductor plate (4), and an insulating dielectric layer (6), characterized in that: The capacitor body (1) is hollow inside to accommodate the conductor plates (4) and the insulating dielectric layer (6). The conductor plates (4) are two parallel metal plates. The two conductor plates (4) are fixed to the upper and lower ends of the inner wall of the capacitor body (1). The insulating dielectric layer (6) is disposed between the two conductor plates (4) and is composed of multiple layers of materials with different dielectric constants. Several heat dissipation fins (3) are fixedly connected to the outer wall of the capacitor body (1) and the heat dissipation fins (3) are fixed to the outer wall of the capacitor body (1) by welding.

2. A capacitor for suppressing electromagnetic interference in a power supply according to claim 1, characterized in that: The heat pipe (5) runs through the inside of the capacitor body (1) and is tightly attached to the bottom surface of the conductor plate (4). The two ends of the heat pipe (5) extend to the outer wall of the capacitor body (1) and are embedded in the heat dissipation fins (3).

3. A capacitor for suppressing electromagnetic interference in a power supply according to claim 1, characterized in that: The heat dissipation fins (3) are wavy.

4. A capacitor for suppressing electromagnetic interference in a power supply according to claim 1, characterized in that: The heat pipe (5) is filled with a heat-conducting liquid.

5. A capacitor for suppressing electromagnetic interference in a power supply according to claim 1, characterized in that: The heat pipe (5) has a spiral groove (8) on its outer wall.

6. A capacitor for suppressing electromagnetic interference in a power supply according to claim 1, characterized in that: The surface of the heat dissipation fins (3) is uniformly provided with several through holes (7).

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