A tantalum capacitor housing encapsulation structure with strong corrosion resistance

Abstract

This utility model discloses a tantalum capacitor shell encapsulation structure with strong corrosion resistance, relating to the field of tantalum capacitor technology. It includes an outer sheath and a buffer assembly. An end cap is connected to the end of the outer sheath, and an inner retaining ring is installed on the inner wall of the end cap. The buffer assembly, used for external buffering and damage prevention, is located inside the outer sheath and includes an outer rubber strip, a buffer rod, an inner rubber strip, and an outer rubber strip. The buffer rod is connected to the surface of the outer rubber strip, and the inner rubber strip is connected to the end of the buffer rod. The outer rubber strip is connected to the side of the inner rubber strip. This tantalum capacitor shell encapsulation structure with strong corrosion resistance provides direct external force protection through the outer sheath outside the tin layer seal, preventing leakage of capacitor fluid due to tin layer damage and increasing corrosion resistance. The rubber outer rubber strip, inner rubber strip, and outer rubber strip are deformed by themselves when the outer sheath is subjected to external force, thus buffering the external force.

Description

Technical Field

[0001] This utility model relates to the field of tantalum capacitor technology, specifically to a tantalum capacitor shell encapsulation structure with strong corrosion resistance. Background Technology

[0002] The tantalum capacitor casing refers to the external enclosure structure used to protect the internal electrodes and electrolyte of a tantalum capacitor. The casing not only provides physical protection but also significantly impacts the capacitor's electrical performance, heat dissipation, and reliability. Different application scenarios will select the appropriate casing type based on specific requirements.

[0003] However, the existing tantalum capacitor casing structure has poor resistance to external forces during use. When subjected to external forces, the casing is easily damaged, causing leakage, which can easily cause corrosion to the external environment. Utility Model Content

[0004] The purpose of this invention is to provide a tantalum capacitor housing encapsulation structure with strong corrosion resistance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tantalum capacitor shell encapsulation structure with strong corrosion resistance, comprising an outer sheath and a buffer assembly. The end of the outer sheath is connected to an end cap, and an inner retaining ring is installed on the inner wall of the end cap. The buffer assembly for external buffering and damage prevention is disposed on the inner side of the outer sheath, and the buffer assembly includes an outer rubber strip one, a buffer rod, an inner rubber strip, and an outer rubber strip two. The surface of the outer rubber strip one is connected to the buffer rod, and the end of the buffer rod is connected to the inner rubber strip. The side of the inner rubber strip is connected to the outer rubber strip two.

[0006] Furthermore, the outer rubber strip one, inner rubber strip and outer rubber strip two form a V-shaped structure under the connection of the buffer rod, and the outer rubber strip one, inner rubber strip and outer rubber strip two are arranged in eight groups in a ring about the center point of the outer sheath.

[0007] Furthermore, a tin layer is connected to the inner side of the inner rubber strip, and a nickel layer is connected to the inner side of the tin layer.

[0008] Furthermore, the nickel layer has a mounting cavity inside it via a ceramic layer, and the mounting cavity is cylindrical in shape.

[0009] Furthermore, the mounting cavity is provided with end protection components at both ends, and two sets of end protection components are provided.

[0010] Furthermore, the end guard assembly includes an end fixing plate and a support sleeve, and the support sleeve is installed on the outer side of the end fixing plate.

[0011] Furthermore, the end protection assembly also includes an outer fixing plate and a buffer cavity. The end of the support sleeve is connected to the outer fixing plate, and a buffer cavity is provided on the outer side of the support sleeve.

[0012] Furthermore, an external electrode is provided inside the support sleeve, and the support sleeve and the external electrode are connected by a sleeve connection.

[0013] This utility model provides a tantalum capacitor shell packaging structure with strong corrosion resistance, which has the following advantages:

[0014] 1. This utility model provides direct external force protection by using an outer sheath outside the tin layer seal, preventing capacitor fluid leakage due to tin layer damage and increasing corrosion resistance. The outer rubber strip one, inner rubber strip and outer rubber strip two, made of rubber, deform themselves to buffer the external force when the outer sheath is subjected to external force. The buffer rod is used to connect the outer rubber strip one, inner rubber strip and outer rubber strip two, as well as to transmit and buffer the external force, so that the buffer assembly can better buffer the external force and increase the service life of the outer sheath.

[0015] 2. This utility model uses an installation cavity for mounting tantalum capacitor liquid and internal electrodes. The end plate, together with the nickel and tin layers, encapsulates the solution. The external electrode and the conductive block at the center of the end plate are connected to the internal electrode to avoid the risk of leakage and corrosion from the electrode leads. The support sleeve inside the outer plate and end plate provides support and is also used for mounting the external electrode. The buffer cavity provides deformation space for the outer plate when the end is subjected to force, avoiding direct damage to the end of the container. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a tantalum capacitor shell packaging structure with strong corrosion resistance according to this utility model.

[0017] Figure 2 This is a schematic diagram of a buffer assembly structure for a tantalum capacitor shell encapsulation structure with strong corrosion resistance according to this utility model.

[0018] Figure 3 This is a schematic diagram of the end-protection assembly structure of a tantalum capacitor shell encapsulation structure with strong corrosion resistance according to this utility model.

[0019] In the diagram: 1. Outer sheath; 2. End cap; 3. Inner retaining ring; 4. Buffer assembly; 401. Outer rubber strip one; 402. Buffer rod; 403. Inner rubber strip; 404. Outer rubber strip two; 5. Tin layer; 6. Nickel layer; 7. Mounting cavity; 8. End protection assembly; 801. End fixing plate; 802. Support sleeve; 803. Outer fixing plate; 804. Buffer cavity; 9. External electrode. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] like Figure 1 and Figure 2 As shown, a tantalum capacitor casing structure with strong corrosion resistance includes an outer sheath 1 and a buffer assembly 4. An end cap 2 is connected to the end of the outer sheath 1. The outer sheath 1 provides direct external force protection outside the tin layer 5, preventing leakage of capacitor fluid due to tin layer 5 damage and increasing corrosion resistance. An inner retaining ring 3 is installed on the inner wall of the end cap 2. The buffer assembly 4, used for external buffering and damage prevention, is located inside the outer sheath 1. The buffer assembly 4 includes an outer rubber strip 401, a buffer rod 402, an inner rubber strip 403, and an outer rubber strip 404. The buffer rod 402 is connected to the surface of the outer rubber strip 401. The buffer rod 402 is used to buffer the outer rubber strip 401, inner rubber strip 403, and outer rubber strip 404. The connection of the second 404 and the buffering of external force transmission enable the buffer component 4 to better buffer external force and increase the service life of the outer sheath 1. The end of the buffer rod 402 is connected to the inner rubber strip 403, and the side of the inner rubber strip 403 is connected to the outer rubber strip 404. The outer rubber strip 401, inner rubber strip 403 and outer rubber strip 404 form a V-shaped structure under the connection of the buffer rod 402. When the outer sheath 1 is subjected to external force, the outer rubber strip 401, inner rubber strip 403 and outer rubber strip 404 made of rubber deform themselves to buffer the external force. The outer rubber strip 401, inner rubber strip 403 and outer rubber strip 404 are arranged in eight groups in a ring about the center point of the outer sheath 1.

[0022] like Figure 3As shown, a tin layer 5 is connected to the inner side of the inner rubber strip 403, and a nickel layer 6 is connected to the inner side of the tin layer 5. A mounting cavity 7 is formed inside the nickel layer 6 through a ceramic layer. The mounting cavity 7 is used for mounting the tantalum capacitor fluid and internal electrodes. The mounting cavity 7 is cylindrical in shape. End protection assemblies 8 are provided at both ends of the mounting cavity 7, and two sets of end protection assemblies 8 are provided. Each end protection assembly 8 includes an end fixing plate 801 and a support sleeve 802. The support sleeve 802 is installed on the outer side of the end fixing plate 801. The end fixing plate 801, together with the nickel layer 6 and the tin layer 5, encapsulates the solution. The end protection assembly 8 also includes an outer fixing plate 803 and a buffer cavity 80. 4. The end of the support sleeve 802 is connected to the outer fixed plate 803. The support sleeve 802 plays a supporting role inside the outer fixed plate 803 and the end fixed plate 801. It is also used for the installation of the external electrode 9. The outer side of the support sleeve 802 is provided with a buffer cavity 804. The buffer cavity 804 is used to provide deformation space for the outer fixed plate 803 when the end is subjected to force, so as to avoid direct damage to the end of the container. The support sleeve 802 is provided with the external electrode 9 inside, and the support sleeve 802 and the external electrode 9 are connected by a sleeve. The external electrode 9 is connected to the conductive block at the center point of the end fixed plate 801 and the internal electrode to avoid the risk of leakage and corrosion when the electrode is led out.

[0023] In summary, the highly corrosion-resistant tantalum capacitor casing structure is first based on... Figures 1-3 The structure shown involves laying nickel and connecting nickel layer 6 on one end of the end plate 801, then soldering it to the tin layer 5. Next, the tantalum capacitor fluid and internal electrodes are installed inside the mounting cavity 7. Then, the other end plate 801 is installed. During installation, the external electrode 9 must be connected to the conductive block at the center of the end plate 801 and the internal electrode to avoid the risk of leakage and corrosion from electrode leads. After the end plate 801 is installed, the support sleeve 802 and the outer plate 803 are installed. Finally, the end cap 2 is installed so that the inner retaining ring 3 engages with the inner side of the outer sheath 1 and the tin layer 5, completing the end installation. This allows the buffer cavity 804 to provide deformation space for the outer plate 803 when the end is subjected to force. To prevent direct damage to the end of the container, the buffer component 4 outside the tin layer 5 cushions the container from external forces during use. The outer rubber strip 401, inner rubber strip 403, and outer rubber strip 404, made of rubber, deform themselves to cushion the external force when the outer sheath 1 is subjected to external force. The buffer rod 402 is used to connect the outer rubber strip 401, inner rubber strip 403, and outer rubber strip 404, as well as to transmit and buffer the external force. This allows the buffer component 4 to better cushion external forces, increase the service life of the outer sheath 1, and enable the outer sheath 1 to play a direct external force protection role outside the tin layer 5 seal, preventing the capacitor fluid from leaking due to damage to the tin layer 5, and increasing corrosion resistance.

[0024] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A tantalum capacitor housing package structure with strong anticorrosion performance, comprising an outer sheath (1) and a buffer assembly (4), characterized in that, The end of the outer sheath (1) is connected to an end cap (2), and an inner retaining ring (3) is installed on the inner wall of the end cap (2). The buffer assembly (4) for external buffering and damage prevention is located on the inner side of the outer sheath (1). The buffer assembly (4) includes an outer rubber strip one (401), a buffer rod (402), an inner rubber strip (403), and an outer rubber strip two (404). The surface of the outer rubber strip one (401) is connected to the buffer rod (402), and the end of the buffer rod (402) is connected to the inner rubber strip (403). The side of the inner rubber strip (403) is connected to the outer rubber strip two (404).

2. The tantalum capacitor case package structure with strong corrosion resistance according to claim 1, characterized in that, The outer rubber strip one (401), inner rubber strip (403) and outer rubber strip two (404) form a V-shaped structure under the connection of the buffer rod (402), and the outer rubber strip one (401), inner rubber strip (403) and outer rubber strip two (404) are arranged in eight groups in a ring about the center point of the outer sheath (1).

3. The tantalum capacitor casing encapsulation structure with strong corrosion resistance according to claim 1, characterized in that, The inner rubber strip (403) has a tin layer (5) connected to its inner side, and a nickel layer (6) is connected to the inner side of the tin layer (5).

4. The tantalum capacitor casing encapsulation structure with strong corrosion resistance according to claim 3, characterized in that, The nickel layer (6) has a mounting cavity (7) inside through a ceramic layer, and the mounting cavity (7) is cylindrical in shape.

5. The tantalum capacitor housing encapsulation structure with strong corrosion resistance according to claim 4, characterized in that, The mounting cavity (7) is provided with end protection components (8) at both ends, and the number of end protection components (8) is set to two sets.

6. The tantalum capacitor housing encapsulation structure with strong corrosion resistance according to claim 5, characterized in that, The end guard assembly (8) includes an end plate (801) and a support sleeve (802), and the support sleeve (802) is installed on the outside of the end plate (801).

7. The tantalum capacitor housing encapsulation structure with strong corrosion resistance according to claim 6, characterized in that, The end protection assembly (8) further includes an outer fixing plate (803) and a buffer cavity (804). The end of the support sleeve (802) is connected to the outer fixing plate (803), and the outer side of the support sleeve (802) is provided with a buffer cavity (804).

8. The tantalum capacitor housing encapsulation structure with strong corrosion resistance according to claim 7, characterized in that, The support sleeve (802) is provided with an external electrode (9) inside, and the support sleeve (802) and the external electrode (9) are connected by a sleeve.

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