A housing structure for an aluminum electrolytic capacitor

Abstract

This utility model relates to the field of capacitor packaging shell technology, specifically a packaging shell structure for an aluminum electrolytic capacitor. The utility model includes a shell body and a sealing cap. The open end of the shell body is provided with an external thread, and the inner wall of the sealing cap is provided with an internal thread. The external thread of the shell body and the internal thread of the sealing cap are adapted to each other. The sealing cap is screwed onto the open end of the shell body through the cooperation of its internal thread and the external thread of the shell body. The adaptation and screwing of the external thread of the shell body and the internal thread of the sealing cap, along with the cooperation between the sealing ring, effectively prevents external moisture, dust, corrosive gases, etc., from entering the interior of the aluminum electrolytic capacitor, maintaining a stable internal environment, ensuring stable capacitor electrical performance, and extending service life. Furthermore, the screw into the limiting groove by the screw ensures precise positioning of the sealing cap, preventing it from rotating or loosening due to vibration or external force during use, further ensuring the overall structural stability.

Description

Technical Field

[0001] This utility model relates to the field of capacitor packaging shell technology, and in particular to an aluminum electrolytic capacitor packaging shell structure. Background Technology

[0002] Electrolytic capacitors are widely used in various electronic devices due to their small size and large capacitance. As an important component of capacitors, the encapsulation shell directly affects their performance, lifespan and safety. The quality of the encapsulation shell structure directly affects the performance and reliability of the capacitor.

[0003] Currently, common aluminum electrolytic capacitor packaging shells have shortcomings in sealing and fixing. Some packaging shells use simple pressing or bonding methods, resulting in unstable sealing performance. In harsh environments such as high temperature and high humidity, external moisture and corrosive gases can easily enter the interior, eroding the electrodes and electrolyte, reducing capacitor performance and lifespan. At the same time, during equipment operation, external forces such as vibration and impact may cause the sealing cover to loosen or shift, leading to sealing failure. Therefore, this paper proposes an aluminum electrolytic capacitor packaging shell structure to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of existing technologies where the encapsulation shell and sealing cap are simply pressed or bonded together, resulting in unstable sealing performance and the sealing cap may loosen or shift due to external forces such as vibration and impact during equipment operation, leading to sealing failure. Therefore, this utility model proposes an aluminum electrolytic capacitor encapsulation shell structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an aluminum electrolytic capacitor encapsulation shell structure, comprising a shell body and a sealing cap, wherein the open end of the shell body is provided with an external thread, and the inner wall of the sealing cap is provided with an internal thread, the external thread of the shell body and the internal thread of the sealing cap are adapted to each other, and the sealing cap is screwed onto the open end of the shell body through the cooperation of the internal thread and the external thread of the shell body, two L-shaped plates are fixedly connected to the arc surface of the shell body, and screws are inserted into the internal threads of the L-shaped plates, two limiting grooves are opened on the arc surface of the sealing cap, and a sealing ring is fixedly connected to the inner surface of the sealing cap.

[0006] The aforementioned components achieve the following effects: by matching and engaging the external threads of the outer shell with the internal threads of the sealing cap, and through the cooperation between the sealing rings, they effectively prevent external moisture, dust, corrosive gases, and other contaminants from entering the aluminum electrolytic capacitor, maintaining a stable internal environment, ensuring stable capacitor electrical performance, and extending service life. Furthermore, by screwing the screw into the limiting groove, the sealing cap is precisely positioned, preventing it from rotating or loosening due to vibration or external forces during use, further ensuring the overall structural stability.

[0007] Preferably, the arc surface of the sealing cover is fixedly connected with several rectangular blocks, and the surface of the rectangular blocks is provided with anti-slip grooves.

[0008] The effect achieved by the above-mentioned components is to increase the friction between the fingers and the sealing cover by setting several rectangular blocks, so as to facilitate the disassembly and installation of the sealing cover and the outer shell body by the staff.

[0009] Preferably, a plurality of heat dissipation fins are fixedly connected to the arc surface of the outer shell body, and the heat dissipation fins are made of copper.

[0010] The effects achieved by the above components are as follows: by setting heat dissipation fins, the heat dissipation area of ​​the outer casing is increased, the heat dissipation efficiency is improved, the operating temperature of the capacitor is effectively reduced, and the service life of the capacitor is extended.

[0011] Preferably, the arc surface of the outer shell body is fixedly connected to two mounting ears, and the surface of the mounting ears is provided with mounting grooves.

[0012] The effect achieved by the above components is that by providing mounting ears, it is convenient for workers to fix the capacitor to the equipment using bolts or rivets.

[0013] Preferably, a cushioning pad is fixedly connected to the inner wall of the outer shell body, and the cushioning pad is made of silicone.

[0014] The effect achieved by the above components is that, by setting up a silicone cushioning pad, when the outer shell is subjected to vibration or impact, the cushioning pad can absorb and disperse energy through its own elastic deformation, thus preventing internal components from being damaged by collision.

[0015] Preferably, a positioning groove is provided at the bottom of the outer shell body.

[0016] The effect achieved by the above components is that the positioning groove is set at the bottom of the housing body and cooperates with the positioning protrusion on the equipment, so that the capacitor can be quickly and accurately positioned during the installation process, thereby improving the installation efficiency.

[0017] Preferably, an explosion-proof valve is installed on the surface of the sealing cover.

[0018] The effect achieved by the above components is that, by setting an explosion-proof valve, when the internal pressure of the capacitor exceeds the set value, the explosion-proof valve will automatically open to release the internal pressure and prevent the capacitor from exploding.

[0019] In summary, the beneficial effects of this utility model are as follows:

[0020] 1. In this utility model, by matching and screwing the external thread of the outer shell body with the internal thread of the sealing cover and the cooperation between the sealing ring, it can effectively prevent external moisture, dust, corrosive gases, etc. from entering the interior of the aluminum electrolytic capacitor, maintain the stability of the internal environment, ensure the stability of the capacitor's electrical performance, and extend its service life. Furthermore, by screwing the screw into the limiting groove, the sealing cover is precisely positioned, preventing the sealing cover from rotating or loosening due to vibration, external force, etc. during use, further ensuring the overall structural stability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 In this utility model Figure 1 Another structural diagram from a different angle;

[0023] Figure 3 This is a schematic diagram of the outer shell body in this utility model;

[0024] Figure 4 This is a schematic diagram of the sealing cap in this utility model.

[0025] Legend: 1. Outer shell; 2. Sealing cover; 3. L-shaped plate; 4. Screw; 5. Rectangular block; 6. Heat dissipation fins; 7. Mounting ear; 8. Positioning groove; 9. Buffer pad; 10. Explosion-proof valve; 11. Sealing ring. Detailed Implementation

[0026] Reference Figure 1-4As shown, this utility model provides a technical solution: an aluminum electrolytic capacitor encapsulation shell structure, including a shell body 1 and a sealing cover 2. The opening end of the shell body 1 is provided with an external thread, and the inner wall of the sealing cover 2 is provided with an internal thread. The external thread of the shell body 1 is adapted to the internal thread of the sealing cover 2. The sealing cover 2 is screwed onto the opening end of the shell body 1 through the cooperation of the internal thread and the external thread of the shell body 1. Two L-shaped plates 3 are fixedly connected to the arc surface of the shell body 1. A screw 4 is inserted into the internal thread of the L-shaped plate 3. Two limiting grooves are opened on the arc surface of the sealing cover 2. A sealing ring 11 is fixedly connected to the inner surface of the sealing cover 2. The mating of the external thread of the outer casing 1 with the internal thread of the sealing cap 2, along with the engagement of the sealing ring 11, effectively prevents external moisture, dust, corrosive gases, and other contaminants from entering the aluminum electrolytic capacitor, maintaining a stable internal environment, ensuring stable capacitor performance, and extending its service life. Furthermore, the screw 4, screwed into the limiting groove, ensures precise positioning of the sealing cap 2, preventing it from rotating or loosening due to vibration or external force during use, further guaranteeing the overall structural stability. Several rectangular blocks 5 are fixedly connected to the arc surface of the sealing cap 2, and the surfaces of the rectangular blocks 5 are provided with anti-slip grooves. The presence of these rectangular blocks 5 increases the friction between fingers and the sealing cap 2, facilitating the disassembly and installation of the sealing cap 2 and the outer casing 1. Several heat dissipation fins 6, made of copper, are fixedly connected to the arc surface of the outer casing 1. The heat dissipation fins 6 increase the heat dissipation area of ​​the outer casing 1, improving heat dissipation efficiency, effectively reducing the capacitor's operating temperature, and extending its service life. Two mounting ears 7 are fixedly connected to the arc surface of the outer casing 1, and the surfaces of the mounting ears 7 are provided with mounting grooves. The mounting ears 7 allow workers to easily secure the capacitor to the equipment using bolts or rivets. A buffer pad 9, made of silicone, is fixedly connected to the inner wall of the outer casing 1. When the outer casing 1 is subjected to vibration or impact, the buffer pad 9 absorbs and disperses energy through its elastic deformation, preventing damage to internal components. A positioning groove 8 is provided at the bottom of the outer casing 1. This groove 8, located at the bottom of the outer casing 1, cooperates with positioning protrusions on the equipment, enabling quick and accurate positioning of the capacitor during installation, improving installation efficiency. An explosion-proof valve 10 is installed on the surface of the sealing cover 2. This valve 10 automatically opens when the internal pressure of the capacitor exceeds a set value, releasing the internal pressure and preventing the capacitor from exploding.

[0027] Working principle: First, the capacitor core is placed inside the outer casing 1. Then, the sealing cover 2 is screwed onto the outer casing 1. At this time, the sealing ring 11 inside the sealing cover 2 fits tightly with the casing to ensure sealing performance. Then, the screw 4 is rotated within the L-shaped plate 3 and moves towards the sealing cover 2 until the screw 4 is inserted into the limiting groove of the sealing cover 2. Next, the mounting lug 7 allows the operator to fix the capacitor to the equipment surface with bolts or rivets, or to mate the positioning groove 8 with the positioning protrusion on the equipment. This allows for quick and accurate positioning of the capacitor during installation, improving installation efficiency. During use, the heat dissipation fins 6 increase the heat dissipation area of ​​the outer casing 1, improving heat dissipation efficiency, effectively reducing the operating temperature of the capacitor, and extending the capacitor's service life. When the shell body 1 is subjected to vibration or impact, the buffer pad 9 can absorb and disperse energy through its own elastic deformation, preventing internal components from being damaged by collision. Finally, by setting an explosion-proof valve 10, when the internal pressure of the capacitor exceeds the set value, the explosion-proof valve 10 will automatically open to release the internal pressure and prevent the capacitor from exploding. Through the matching and screwing of the external thread of the shell body 1 with the internal thread of the sealing cover 2 and the cooperation between the sealing ring 11, external moisture, dust, corrosive gases and other substances can be effectively prevented from entering the aluminum electrolytic capacitor, maintaining the stability of the internal environment, ensuring the stability of the capacitor's electrical performance, and extending its service life. Furthermore, by screwing the screw 4 into the limiting groove, the sealing cover 2 is precisely positioned to prevent the sealing cover 2 from rotating or loosening due to vibration, external force, etc. during use, further ensuring the overall structural stability.

[0028] 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 housing structure for an aluminum electrolytic capacitor, comprising a housing body (1) and a sealing cap (2), characterized in that: The outer shell body (1) has an external thread at its open end, and the inner wall of the sealing cover (2) has an internal thread. The external thread of the outer shell body (1) is adapted to the internal thread of the sealing cover (2). The sealing cover (2) is screwed onto the open end of the outer shell body (1) through the cooperation of the internal thread and the external thread of the outer shell body (1). Two L-shaped plates (3) are fixedly connected to the arc surface of the outer shell body (1). A screw (4) is inserted into the internal thread of the L-shaped plate (3). Two limiting grooves are opened on the arc surface of the sealing cover (2). A sealing ring (11) is fixedly connected to the inner surface of the sealing cover (2).

2. An aluminum electrolytic capacitor package case structure according to claim 1, characterized by: The arc surface of the sealing cover (2) is fixedly connected to several rectangular blocks (5), and the surface of the rectangular blocks (5) is provided with anti-slip grooves.

3. An aluminum electrolytic capacitor package case structure according to claim 1, wherein: The outer shell body (1) has several heat dissipation fins (6) fixedly connected to its arc surface, and the heat dissipation fins (6) are made of copper.

4. An aluminum electrolytic capacitor package case structure according to claim 1, wherein: The outer shell body (1) has two mounting ears (7) fixedly connected to its arc surface, and the surface of the mounting ears (7) is provided with mounting grooves.

5. An aluminum electrolytic capacitor package case structure according to claim 1, wherein: The inner wall of the outer shell body (1) is fixedly connected with a buffer pad (9), and the buffer pad (9) is made of silicone.

6. An aluminum electrolytic capacitor package case structure according to claim 1, wherein: The bottom of the outer shell body (1) is provided with a positioning groove (8).

7. An aluminum electrolytic capacitor package case structure according to claim 1, wherein: An explosion-proof valve (10) is installed on the surface of the sealing cover (2).

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