High-temperature long-life plug-in capacitor

Abstract

The utility model discloses a high-temperature long-life plug-in capacitor which comprises an aluminum inner shell, the inner wall of the aluminum inner shell is fixedly connected with a heat conduction silicon rubber sleeve, the inner wall of the heat conduction silicon rubber sleeve is fixedly connected with a core bag, the outer surface of the aluminum inner shell is fixedly connected with an aluminum outer shell, and the high-temperature long-life plug-in capacitor and the core bag are fixed in the heat conduction silicon rubber sleeve. The heat conduction silica gel sleeve is fixed in the aluminum inner shell, is made of heat conduction silica gel, is a heat conduction type organic silicone grease compound, is commonly used for heat conduction and heat dissipation of electronic components, ensures stability of electrical performance of electronic instruments, meters and the like, and can effectively guide heat generated by the core package to the aluminum shell and dissipate the heat to the outside of the capacitor. The electrolyte is arranged in the first negative paper and the second negative paper in the core package, the distance between the positive electrode and the negative electrode of the capacitor is kept through the separation paper, short circuit of the positive electrode and the negative electrode is avoided, meanwhile, the electrolyte freely flows in the capacitor, and the efficiency of the capacitor is improved.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to high-temperature long-life plug-in capacitors. Background Technology

[0002] A capacitor is an energy storage element used in circuits for tuning, filtering, coupling, bypassing, energy conversion, and time delay. Capacitors are commonly called capacitors. Based on their structure, they can be divided into three types: fixed capacitors, semi-variable capacitors, and variable capacitors. A common type is the general-purpose electrolytic capacitor made of aluminum, known for its good electrical performance, wide applicability, and high reliability.

[0003] A search revealed a high-temperature, long-life electrolytic capacitor disclosed in Chinese Utility Model Patent Publication No. CN212625216U. This capacitor, with its grooves and cylindrical body, increases the contact area between the capacitor and air during operation, thereby accelerating heat conduction and improving heat dissipation efficiency. While this capacitor utilizes heat dissipation to ensure high-temperature resistance, it lacks a structure to protect the capacitor from short circuits between the positive and negative terminals, making it susceptible to damage and reducing efficiency. Therefore, a capacitor with both positive and negative short-circuit protection is needed. Utility Model Content

[0004] The main purpose of this invention is to provide high-temperature, long-life plug-in capacitors, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-temperature, long-life plug-in capacitor includes an aluminum inner shell, a thermally conductive silicone sleeve fixedly connected to the inner wall of the aluminum inner shell, a core package fixedly connected to the inner wall of the thermally conductive silicone sleeve, and an aluminum outer shell fixedly connected to the outer surface of the aluminum inner shell.

[0007] In order to achieve the effect of installing negative and positive leads, the core of the high-temperature long-life plug-in capacitor of this utility model includes a negative aluminum foil, a separator paper is fixedly connected to the outer surface of the negative aluminum foil, a first negative paper is fixedly connected to the outer surface of the separator paper, a positive aluminum foil is fixedly connected to the outer surface of the first negative paper, and a second negative paper is fixedly connected to the outer surface of the positive aluminum foil.

[0008] To facilitate the connection of the capacitor and the circuit, the negative lead is fixedly connected to the inner wall of the negative aluminum foil and the positive lead is fixedly connected to the inner wall of the positive aluminum foil, which is the high-temperature long-life plug-in capacitor of this utility model.

[0009] In order to achieve the effect of connecting the negative terminal of the capacitor to the circuit, as the high-temperature long-life plug-in capacitor of this utility model, one end of the negative lead is fixedly connected to a negative pin, and one end of the negative pin is fixedly connected to a negative connecting piece.

[0010] In order to achieve the effect of connecting the positive terminal of the capacitor to the circuit, as the high-temperature long-life plug-in capacitor of this utility model, one end of the positive lead is fixedly connected to a current protector, and the bottom end of the current protector is fixedly connected to a positive terminal connecting piece.

[0011] In order to improve the heat dissipation performance of the capacitor, the high-temperature long-life plug-in capacitor of this utility model has a heat sink fixedly connected to the inner wall of the outer surface of the aluminum inner shell, and the outer surface of the heat sink has an arc groove.

[0012] In order to achieve the effect of sealing the bottom of the capacitor, as a high-temperature long-life plug-in capacitor of this utility model, the inner wall of the thermally conductive silicone sleeve is fixedly connected with a sealing plug, and the upper surface of the sealing plug is provided with a limiting groove.

[0013] In order to improve the explosion-proof performance of the capacitor, the upper surface of the aluminum inner shell of this utility model, which is a high-temperature long-life plug-in capacitor, is provided with an explosion-proof groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This high-temperature, long-life plug-in capacitor features an aluminum inner shell, a thermally conductive silicone sleeve, a core package, and separator paper. The thermally conductive silicone sleeve is made of thermally conductive silicone, a thermally conductive silicone grease-like compound commonly used for heat conduction and dissipation in electronic components, ensuring the stable electrical performance of electronic instruments and meters. It effectively conducts the heat generated by the core package to the aluminum shell and dissipates it to the outside of the capacitor, preventing the internal temperature of the capacitor from becoming too high. The first and second negative electrode papers inside the core package contain the electrolyte. The separator paper maintains the distance between the positive and negative electrodes of the capacitor, preventing short circuits between the positive and negative electrodes. At the same time, the electrolyte flows freely inside the capacitor, improving the efficiency of the capacitor.

[0016] 2. This high-temperature, long-life plug-in capacitor, through the design of heat sink, arc groove, sealing plug and explosion-proof groove, the heat sink and aluminum inner shell are connected together, which can conduct heat away from the aluminum inner shell and aluminum outer shell, reduce the capacitor temperature and improve the capacitor heat dissipation performance. The explosion-proof groove can control the direction of explosion in the event of an explosion risk, and prevent the entire shell from being blown apart. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the high-temperature long-life plug-in capacitor in Embodiment 1 of this utility model;

[0018] Figure 2This is a top-view isometric structural diagram of the high-temperature long-life plug-in capacitor of Embodiment 1 of this utility model;

[0019] Figure 3 This is a frontal cross-sectional view of the high-temperature long-life plug-in capacitor of Embodiment 1 of this utility model;

[0020] Figure 4 This is a cross-sectional view of the high-temperature long-life plug-in capacitor of Embodiment 1 of this utility model from the right side.

[0021] Figure 5 This is a schematic diagram of the exploded structure of the aluminum shell in the high-temperature long-life plug-in capacitor of Embodiment 1 of this utility model;

[0022] Figure 6 This is a schematic diagram of the exploded structure of the aluminum inner shell in the high-temperature long-life plug-in capacitor of Embodiment 1 of this utility model;

[0023] Figure 7 This is an exploded view of the thermally conductive silicone sleeve in the high-temperature long-life plug-in capacitor of Embodiment 1 of this utility model;

[0024] Figure 8 This is an isometric structural diagram of the core package of the high-temperature long-life plug-in capacitor in Embodiment 1 of this utility model.

[0025] In the diagram: 1. Aluminum inner shell; 2. Thermally conductive silicone sleeve; 3. Core package; 301. Negative electrode aluminum foil; 302. Separator paper; 303. First negative electrode paper; 304. Positive electrode aluminum foil; 305. Second negative electrode paper; 4. Aluminum outer shell; 5. Heat sink; 6. Arc groove; 7. Sealing plug; 8. Explosion-proof groove; 9. Negative electrode lead; 10. Positive electrode lead; 11. Negative electrode pin; 12. Negative electrode connecting piece; 13. Current protector; 14. Positive electrode connecting piece; 15. Limiting groove. Detailed Implementation

[0026] 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.

[0027] Example 1

[0028] like Figure 1-8 As shown, the high-temperature long-life plug-in capacitor includes an aluminum inner shell 1, a thermally conductive silicone sleeve 2 fixedly connected to the inner wall of the aluminum inner shell 1, a core package 3 fixedly connected to the inner wall of the thermally conductive silicone sleeve 2, and an aluminum outer shell 4 fixedly connected to the outer surface of the aluminum inner shell 1.

[0029] In practical use, the aluminum inner shell 1, thermally conductive silicone sleeve 2, core package 3, and separator paper 302 are arranged. The core package 3 is fixed inside the thermally conductive silicone sleeve 2, and the thermally conductive silicone sleeve 2 is fixed inside the aluminum inner shell 1. The thermally conductive silicone sleeve 2 is made of thermally conductive silicone, a thermally conductive organosilicon grease-like compound, which is often used for heat conduction and heat dissipation of electronic components to ensure the stability of the electrical performance of electronic instruments and meters. It can effectively conduct the heat generated by the core package 3 to the aluminum shell and dissipate it to the outside of the capacitor, avoiding excessively high internal temperature of the capacitor. The first negative electrode paper 303 and the second negative electrode paper 305 inside the core package 3 contain electrolyte. The separator paper 302 is used to maintain the distance between the positive and negative electrodes of the capacitor to avoid short circuit between the positive and negative electrodes. At the same time, the electrolyte flows freely inside the capacitor, improving the efficiency of the capacitor.

[0030] In this embodiment, the core package 3 includes a negative electrode aluminum foil 301, a separator paper 302 is fixedly connected to the outer surface of the negative electrode aluminum foil 301, a first negative electrode paper 303 is fixedly connected to the outer surface of the separator paper 302, a positive electrode aluminum foil 304 is fixedly connected to the outer surface of the first negative electrode paper 303, and a second negative electrode paper 305 is fixedly connected to the outer surface of the positive electrode aluminum foil 304.

[0031] In practical use, the negative lead 9 and the positive lead 10 are installed by setting the negative aluminum foil 301 and the positive aluminum foil 304.

[0032] In this embodiment, a negative lead 9 is fixedly connected to the inner wall of the negative aluminum foil 301, and a positive lead 10 is fixedly connected to the inner wall of the positive aluminum foil 304.

[0033] In practical use, the negative lead 9 and the positive lead 10 facilitate the connection of the capacitor and the circuit.

[0034] In this embodiment, one end of the negative lead 9 is fixedly connected to a negative pin 11, and one end of the negative pin 11 is fixedly connected to a negative connecting piece 12.

[0035] In practical use, the negative terminal of the capacitor is connected to the circuit through the negative terminal connection piece 12.

[0036] In this embodiment, a current protector 13 is fixedly connected to one end of the positive lead 10, and a positive connecting piece 14 is fixedly connected to the bottom end of the current protector 13.

[0037] In practical use, the positive terminal of the capacitor is connected to the circuit through the setting of the positive terminal connection piece 14.

[0038] In this embodiment, a heat sink 5 is fixedly connected to the inner wall of the outer surface of the aluminum inner shell 1, and an arc groove 6 is formed on the outer surface of the heat sink 5.

[0039] In practical use, the heat dissipation performance of the capacitor is improved by setting up heat sink 5.

[0040] In this embodiment, a sealing plug 7 is fixedly connected to the inner wall of the thermally conductive silicone sleeve 2, and a limiting groove 15 is formed on the upper surface of the sealing plug 7.

[0041] In practical use, the bottom of the capacitor is sealed by setting the sealing plug 7.

[0042] In this embodiment, an explosion-proof groove 8 is provided on the upper surface of the aluminum inner shell 1.

[0043] In practical use, the explosion-proof performance of the capacitor is improved by setting the explosion-proof slot 8.

[0044] Working principle: The thermally conductive silicone sleeve 2 is made of thermally conductive silicone, a thermally conductive organosilicon grease-like compound, which is often used for heat conduction and heat dissipation of electronic components to ensure the stability of electrical performance of electronic instruments and meters. It can effectively conduct the heat generated by the core package 3 to the aluminum shell and dissipate it to the outside of the capacitor, avoiding excessive temperature inside the capacitor. The first negative electrode paper 303 and the second negative electrode paper 305 inside the core package 3 contain electrolyte. The separator paper 302 is used to maintain the distance between the positive and negative electrodes of the capacitor to avoid short circuit between the positive and negative electrodes.

[0045] 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 illustrative of the principles of this 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature, long-life plug-in capacitor, comprising an aluminum inner shell (1), characterized in that: The inner wall of the aluminum inner shell (1) is fixedly connected to a thermally conductive silicone sleeve (2), the inner wall of the thermally conductive silicone sleeve (2) is fixedly connected to a core package (3), and the outer surface of the aluminum inner shell (1) is fixedly connected to an aluminum outer shell (4).

2. The high-temperature, long-life plug-in capacitor according to claim 1, characterized in that: The core package (3) includes a negative electrode aluminum foil (301), a separator paper (302) is fixedly connected to the outer surface of the negative electrode aluminum foil (301), a first negative electrode paper (303) is fixedly connected to the outer surface of the separator paper (302), a positive electrode aluminum foil (304) is fixedly connected to the outer surface of the first negative electrode paper (303), and a second negative electrode paper (305) is fixedly connected to the outer surface of the positive electrode aluminum foil (304).

3. The high-temperature, long-life plug-in capacitor according to claim 2, characterized in that: The inner wall of the negative electrode aluminum foil (301) is fixedly connected with a negative electrode lead (9), and the inner wall of the positive electrode aluminum foil (304) is fixedly connected with a positive electrode lead (10).

4. The high-temperature, long-life plug-in capacitor according to claim 3, characterized in that: One end of the negative lead (9) is fixedly connected to a negative pin (11), and one end of the negative pin (11) is fixedly connected to a negative connecting piece (12).

5. The high-temperature, long-life plug-in capacitor according to claim 3, characterized in that: One end of the positive lead (10) is fixedly connected to a current protector (13), and the bottom end of the current protector (13) is fixedly connected to a positive connecting piece (14).

6. The high-temperature, long-life plug-in capacitor according to claim 1, characterized in that: A heat sink (5) is fixedly connected to the inner wall of the outer surface of the aluminum inner shell (1), and an arc groove (6) is formed on the outer surface of the heat sink (5).

7. The high-temperature, long-life plug-in capacitor according to claim 1, characterized in that: The inner wall of the thermally conductive silicone sleeve (2) is fixedly connected with a sealing plug (7), and a limiting groove (15) is formed on the upper surface of the sealing plug (7).

8. The high-temperature, long-life plug-in capacitor according to claim 1, characterized in that: An explosion-proof groove (8) is provided on the upper surface of the aluminum inner shell (1).

Images