A high-reliability electrolytic capacitor

Abstract

This utility model relates to the field of capacitor equipment technology, specifically a high-reliability electrolytic capacitor, including a shell, a core package inside the shell, a cover plate on the top of the shell, a conductor on the cover plate with its bottom end penetrating the cover plate and connecting to the core package, a sealing plate on the upper part of the core package, and a convex ring integrally formed on the inner wall of the shell near the lower part of the sealing plate. A pad is adhered to the bottom surface of the sealing plate, and the bottom of the pad is supported by the convex ring. In this high-reliability electrolytic capacitor, the convex ring integrally formed on the inner wall of the shell supports the pad, and the hemispherical protrusion at the bottom of the pad abuts against the top of the core package. Combined with the abutment of the sealing plate by the pressing component, a double-stabilized support structure is formed. Under external vibration, impact, or temperature changes, the displacement of the core package can be effectively limited, ensuring that the relative position of the core package and other components is fixed, and maintaining stable capacitor performance.

Description

Technical Field

[0001] This utility model relates to the field of capacitor equipment technology, and more specifically, to a high-reliability electrolytic capacitor. Background Technology

[0002] In today's era of rapid development in electronic devices, electrolytic capacitors, as key electronic components, are widely used in various circuits, and their performance plays a crucial role in the stability and reliability of electronic devices. From the initial wet electrolytic capacitors using aqueous electrolyte solutions, to the development of dry electrolytic capacitors with a paste-like electrolyte of ammonium borate and glycerol, and then to today's solid electrolytic capacitors, the development of electrolytic capacitors has continuously met the demands for miniaturization and high performance in electronic circuits.

[0003] However, existing electrolytic capacitors still exhibit some problems in practical use. For example, the stability of their internal structure needs improvement. When affected by external factors such as vibration, impact, or temperature changes, relative displacement may occur between the core and other components, thus affecting capacitor performance. Simultaneously, the sealing performance is also somewhat inadequate, easily leading to electrolyte leakage and reducing the capacitor's lifespan.

[0004] The comparative document "High-Stability Leakage-Proof Aluminum Electrolytic Capacitor Based on Dual Energy Storage" (Announcement No.: CN218100994U) addresses the impact of temperature on the internal structure of the device and the damage to the capacitor core caused by external pressure to a certain extent by setting up an insulating heat shield and a protective ring, thus improving the stability of the device. However, this solution still has room for improvement in terms of internal structural stability and further enhancing sealing performance. Therefore, developing an electrolytic capacitor with higher reliability is of significant practical importance. Utility Model Content

[0005] The purpose of this invention is to provide a high-reliability electrolytic capacitor to address the issues raised in the background section regarding the remaining room for improvement in terms of internal structural stability and sealing performance of traditional capacitors.

[0006] To achieve the above objectives, this utility model provides a high-reliability electrolytic capacitor, including a housing, a core package disposed inside the housing, a cover plate mounted on the top of the housing, a conductor disposed on the cover plate, the bottom end of the conductor penetrating the cover plate and connected to the core package, a sealing plate disposed on the upper part of the core package, a protruding ring integrally formed and mounted on the inner wall of the housing near the lower part of the sealing plate, a pad adhered to the bottom surface of the sealing plate, and the bottom of the pad being supported by the protruding ring.

[0007] This enclosure provides protection and support for the internal components, preventing external physical damage and environmental interference. The core is the core component that enables the capacitor's function. The cover seals the enclosure and prevents dust and impurities from entering. The conductor connects the core to the external circuitry, enabling power transmission. The sealing plate and gasket enhance the capacitor's internal sealing, reducing the risk of electrolyte leakage. The convex ring supports the gasket, ensuring the stability of the sealing plate and gasket, guaranteeing the overall structural stability of the capacitor, and thus improving reliability.

[0008] Preferably, the core package is formed by sequentially stacking and winding an anode foil, electrolytic paper, and a cathode foil.

[0009] This configuration involves the core package being formed by sequentially stacking and winding anode foil, electrolytic paper, and cathode foil. This structure increases the electrode area and improves the capacitance of the capacitor.

[0010] Preferably, the core package is fitted with a sleeve.

[0011] This feature, with its outer sleeve protecting the core package from external physical damage such as scratches and impacts, is designed to protect the core package from such damage.

[0012] Preferably, the bottom surface of the pad is provided with a number of hemispherical protrusions made of silicone material at equal intervals, and the bottom of the hemispherical protrusions presses against the top of the core package.

[0013] This feature includes a silicone hemispherical protrusion at the bottom of the pad that presses against the top of the core package. The silicone material has good elasticity and cushioning properties.

[0014] Preferably, sealing rings are fitted on both the upper and lower sides of the conductor near the sealing plate.

[0015] This feature includes sealing rings fitted on the upper and lower sides of the conductor near the sealing plate, which enhances the seal between the conductor and the sealing plate and prevents electrolyte leakage from the connection between the conductor and the sealing plate.

[0016] Preferably, a circular groove is provided at the bottom of the pad near the sealing ring, and the sealing ring is disposed in the circular groove and fixed to the pad with adhesive.

[0017] This feature provides a mounting position for the sealing ring in the groove at the bottom of the pad, making the installation more secure.

[0018] Preferably, a clamping component is installed on the inner wall of the outer casing near the upper part of the sealing plate. The top end of the clamping component is connected to the inner wall of the outer casing, and the bottom end abuts against the upper surface of the sealing plate.

[0019] This feature involves a clamping component on the upper part of the inner wall of the housing abutting against the upper surface of the sealing plate, providing downward pressure to the sealing plate, making the contact between the sealing plate and the gasket and the convex ring tighter, and enhancing the sealing effect.

[0020] Preferably, the clamping component includes a fixing sleeve, a push rod is inserted into the bottom of the fixing sleeve, the bottom end of the push rod abuts against the upper surface of the sealing plate, and a spring is installed at the top end of the push rod.

[0021] This feature includes a retaining sleeve in the clamping component that provides guidance and support for the push rod, ensuring that the push rod accurately abuts against the sealing plate.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this high-reliability electrolytic capacitor, an integrally formed convex ring support pad on the inner wall of the outer casing, with a hemispherical protrusion at the bottom of the pad pressing against the top of the core package, combined with the clamping component's contact with the sealing plate, forms a double-layered, stable support structure. This effectively limits the displacement of the core package under external vibration, impact, or temperature changes, ensuring the relative position of the core package with other components remains fixed and maintaining stable capacitor performance.

[0024] Sealing rings are fitted on the upper and lower sides of the conductor near the sealing plate, and these rings are positioned within circular grooves at the bottom of the pad and secured with adhesive. This multi-layered sealing design significantly enhances the sealing performance at the connection between the conductor and the sealing plate. Simultaneously, the tight fit of the overall structure reduces the risk of electrolyte leakage and extends the lifespan of the electrolytic capacitor.

[0025] The sleeve surrounding the core package effectively protects the core package, preventing it from directly contacting the inner wall of the outer casing and causing wear. The spring in the clamping component has a buffering effect; when subjected to external impact, it can absorb the impact force through the elastic deformation of the spring, further protecting the internal structure and improving the reliability of the capacitor. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the pad in this utility model;

[0029] Figure 4 This is a schematic diagram of the clamping component in this utility model.

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Outer shell; 11. Sleeve; 12. Raised ring; 2. Cover plate; 3. Conductor; 31. Sealing ring; 4. Core package; 5. Sealing plate; 51. Gasket; 511. Circular groove; 512. Hemispherical protrusion; 6. Pressing component; 61. Fixing sleeve; 62. Push rod; 63. Spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This invention provides a high-reliability electrolytic capacitor, such as... Figure 1 , Figure 2 As shown, the device includes an outer shell 1, a core package 4 inside the outer shell 1, a cover plate 2 on the top of the outer shell 1, a conductor 3 on the cover plate 2, the bottom end of the conductor 3 passing through the cover plate 2 and connected to the core package 4, a sealing plate 5 on the upper part of the core package 4, a protruding ring 12 integrally formed on the inner wall of the outer shell 1 near the lower part of the sealing plate 5, and a pad 51 bonded to the bottom surface of the sealing plate 5, the bottom of the pad 51 being supported by the protruding ring 12.

[0034] The outer casing 1 provides robust physical protection for the internal components, isolating them from external environmental factors such as dust and moisture, while also serving as the overall supporting frame. The core package 4 is the core component that enables the capacitor's function. The cover plate 2 seals the top of the outer casing 1, further enhancing the protective effect. The conductor 3 passes through the cover plate 2, connecting the core package 4 to the external circuit, enabling power conduction. The sealing plate 5 and the pad 51 work together. The bottom of the pad 51 is supported by a convex ring 12 integrally formed on the inner wall of the outer casing 1, which not only improves the internal sealing of the capacitor, effectively reducing the risk of electrolyte leakage, but also ensures the stability of the sealing plate 5, the pad 51, and the internal structure, thereby improving the overall reliability of the capacitor.

[0035] In this embodiment, the core package 4 is formed by sequentially stacking and winding an anode foil, electrolytic paper, and a cathode foil, and is filled with electrolyte. This structural design of the core package 4 effectively increases the electrode area, thereby improving the capacitance of the capacitor. The electrolytic paper, located between the anode foil and the cathode foil, serves as insulation, preventing direct contact between the two electrodes and thus preventing short circuits. This ensures the normal and stable operation of the core package 4 and improves the reliability of the capacitor performance.

[0036] Specifically, such as Figure 2 As shown, the core package 4 is fitted with a sleeve 11.

[0037] The sleeve 11 tightly wraps the core package 4, which can effectively resist physical damage such as scratches and collisions from the outside. At the same time, it has good insulation properties to prevent the core package 4 from contacting the inner wall of the outer shell 1 and causing leakage. It comprehensively protects the safety of the core package 4 and improves the safety and reliability of the capacitor.

[0038] Furthermore, such as Figure 2 , Figure 3 As shown, a number of hemispherical protrusions 512 made of silicone material are installed in a ring at equal intervals on the bottom surface of the pad 51, and the bottom of the hemispherical protrusions 512 presses against the top of the core package 4.

[0039] The hemispherical bump 512 is made of silicone. Thanks to the excellent elasticity of silicone, it effectively buffers external forces when the capacitor is subjected to vibration or impact, preventing damage to the core package 4 due to excessive impact. Simultaneously, the bottom of the hemispherical bump 512 presses firmly against the top of the core package 4, securely fixing the core package 4 in the position within the outer casing 1 and preventing the core package 4 from shaking and affecting capacitor performance.

[0040] Furthermore, such as Figure 2 As shown, sealing rings 31 are fitted on both the upper and lower sides of the conductor 3 near the sealing plate 5.

[0041] The sealing ring 31 fits tightly against the connection between the conductor 3 and the sealing plate 5, forming a highly efficient sealing barrier. This prevents electrolyte leakage from this location, extends the lifespan of the capacitor, and avoids electrolyte leakage causing corrosion damage to other electronic components, thereby improving the overall reliability of the electronic equipment.

[0042] Furthermore, such as Figure 3 As shown, a circular groove 511 is provided at the bottom of the pad 51 near the sealing ring 31. The sealing ring 31 is placed in the circular groove 511 and is fixed to the pad 51 by adhesive.

[0043] The circular groove 511 provides precise installation positioning for the sealing ring 31, ensuring that the sealing ring 31 is installed firmly. The adhesive bonding further strengthens the connection, ensuring that the sealing ring 31 will not shift or fall off during long-term use, and will continue to play a stable sealing role, thus ensuring the reliability of the capacitor's sealing performance.

[0044] Furthermore, such as Figure 2 As shown, a clamping component 6 is installed on the inner wall of the outer casing 1 near the upper part of the sealing plate 5. The top end of the clamping component 6 is connected to the inner wall of the outer casing 1, and the bottom end abuts against the upper surface of the sealing plate 5.

[0045] The top of the clamping component 6 is connected to the inner wall of the outer casing 1, and the bottom abuts against the upper surface of the sealing plate 5. By applying downward pressure, the sealing plate 5, the gasket 51, and the convex ring 12 fit more tightly, significantly enhancing the sealing effect. At the same time, it effectively fixes the sealing plate 5 and the gasket 51, improving the stability of the internal structure of the capacitor.

[0046] Furthermore, such as Figure 2 , Figure 4As shown, the clamping component 6 includes a fixing sleeve 61, a push rod 62 is inserted into the bottom of the fixing sleeve 61, the bottom end of the push rod 62 abuts against the upper surface of the sealing plate 5, and a spring 63 is installed at the top end of the push rod 62.

[0047] The fixed sleeve 61 provides stable support and guidance for the push rod 62, ensuring that the push rod 62 accurately abuts against the sealing plate 5. The spring 63 gives the push rod 62 elasticity. When the capacitor is affected by factors such as vibration and temperature changes, the spring 63 can automatically adjust the pressure of the push rod 62 to ensure that the sealing plate 5 is always under stable pressure, and to continuously maintain a good sealing effect and structural stability.

[0048] In use, the high-reliability electrolytic capacitor of this invention, after the external circuit is powered on, conducts voltage through conductor 3 to the anode and cathode foils of the core cascade 4. Due to the sequentially stacked and wound structure of the anode foil, electrolytic paper, and cathode foil, the electrode area is increased, allowing more charge to accumulate on the anode and cathode foils, achieving efficient energy storage. When the stored energy is needed by the circuit, it flows back to the external circuit through conductor 3 to provide power.

[0049] The convex ring 12 on the inner wall of the outer casing 1 supports the pad 51. The hemispherical protrusion 512 at the bottom of the pad 51 presses against the top of the core package 4. At the same time, the push rod 62 of the pressing component 6 presses downward against the sealing plate 5 under the action of the spring 63. During the operation of the capacitor, when encountering vibration, impact, or temperature changes, this double-stabilizing structure can effectively limit the displacement of the core package 4. The sleeve 11 wraps around the core package 4 to prevent it from being damaged by friction with the inner wall of the outer casing 1, further ensuring the stability of the internal structure and ensuring that the capacitor performance is not affected.

[0050] The conductor 3 is tightly fitted to the sealing rings 31 on both the upper and lower sides of the sealing plate 5 at the connection point. The circular groove 511 at the bottom of the pad 51 provides a stable mounting position for the sealing rings 31 and is fixed with adhesive. At the same time, the clamping component 6 ensures that the sealing plate 5, the pad 51, and the convex ring 12 are tightly fitted, forming multiple layers of sealing protection. During the operation of the capacitor, this effectively prevents electrolyte leakage, protects internal components from electrolyte corrosion, extends the capacitor's service life, and ensures the reliable operation of the entire electronic device.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high reliability electrolytic capacitor comprising a housing (1), characterized in that: The outer shell (1) has a core package (4) inside. A cover plate (2) is installed on the top of the outer shell (1). A conductor (3) is provided on the cover plate (2). The bottom end of the conductor (3) passes through the cover plate (2) and is connected to the core package (4). A sealing plate (5) is provided on the upper part of the core package (4). A convex ring (12) is integrally installed on the inner wall of the outer shell (1) near the lower part of the sealing plate (5). A pad (51) is bonded to the bottom surface of the sealing plate (5). The bottom of the pad (51) is supported by the convex ring (12).

2. The high-reliability electrolytic capacitor according to claim 1, characterized in that: The core package (4) is formed by sequentially stacking and winding an anode foil, electrolytic paper, and a cathode foil.

3. The high-reliability electrolytic capacitor according to claim 1, characterized in that: The core package (4) is covered with a sleeve (11).

4. The high-reliability electrolytic capacitor according to claim 1, characterized in that: The bottom surface of the pad (51) is provided with a number of hemispherical protrusions (512) of silicone material at equal intervals, and the bottom of the hemispherical protrusions (512) presses against the top of the core package (4).

5. The high-reliability electrolytic capacitor according to claim 1, characterized in that: The conductor (3) is fitted with sealing rings (31) on both the upper and lower sides near the sealing plate (5).

6. The high-reliability electrolytic capacitor according to claim 5, characterized in that: A circular groove (511) is provided at the bottom of the pad (51) near the sealing ring (31). The sealing ring (31) is located in the circular groove (511) and is fixed to the pad (51) by adhesive.

7. The high-reliability electrolytic capacitor according to claim 1, characterized in that: A clamping component (6) is installed on the inner wall of the outer shell (1) near the upper part of the sealing plate (5). The top end of the clamping component (6) is connected to the inner wall of the outer shell (1), and the bottom end abuts against the upper surface of the sealing plate (5).

8. The high-reliability electrolytic capacitor according to claim 7, characterized in that: The clamping component (6) includes a fixing sleeve (61), a top rod (62) is inserted into the bottom of the fixing sleeve (61), the bottom end of the top rod (62) abuts against the upper surface of the sealing plate (5), and a spring (63) is installed at the top end of the top rod (62).

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