High-reliability 125 DEG C aluminum electrolytic capacitor

Abstract

The utility model discloses a high-reliability 125 DEG C aluminum electrolytic capacitor, and relates to the technical field of electrolytic capacitors. Comprising an aluminum shell outer frame and a heat dissipation structure arranged on the aluminum shell outer frame, the heat dissipation structure comprises a copper circular plate, a plurality of contact copper plates, a conduction plate and a heat dissipation frame, the top of the outer wall of the copper circular plate is fixedly arranged on the aluminum shell outer frame, and the ends, close to each other, of the contact copper plates are fixedly arranged on the copper circular plate; the sides, close to each other, of the multiple contact copper plates are fixedly arranged on the aluminum shell outer frame, the multiple contact copper plates are arranged along the circumferential surface at equal intervals, the top of the outer wall of the conduction plate is fixedly arranged on the copper circular plate, and the top of the outer wall of the heat dissipation frame is fixedly arranged on the conduction plate. Through the copper circular plate, the contact copper plate, the conduction plate and the heat dissipation frame, the stability of the surface of the electrolytic capacitor can be reduced through heat dissipation, so that the internal stability is influenced, the electrolytic capacitor is prevented from exploding or leaking at a high temperature, and the stability and reliability of the electrolytic capacitor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic capacitors, in particular to a 125°C aluminum electrolytic capacitor with high reliability. Background Art

[0002] At present, the structure of an electrolytic capacitor usually consists of two main parts, an electrode and an electrolyte. Specifically, an electrolytic capacitor is composed of two metal foil electrodes (anode and cathode) and an electrolyte sandwiched between them. These electrodes are separated by a dielectric electrolyte, which is usually liquid and is used for conducting electricity and promoting electrolytic reactions.

[0003] At present, the performance of an electrolytic capacitor will be greatly reduced in a high-temperature environment, and it may even cause safety problems such as explosion or leakage. During the operation of an electrolytic capacitor, certain heat will be generated, and high temperature will accelerate the volatilization and loss of the electrolyte, thereby shortening the life of the electrolytic capacitor. Summary of the Utility Model

[0004] The utility model provides a 125°C aluminum electrolytic capacitor with high reliability. Through a copper round plate, a contact copper plate, a conduction plate, and a heat dissipation frame, heat dissipation can be used to reduce the temperature on the surface of the electrolytic capacitor, thereby affecting the internal temperature, avoiding situations such as explosion or leakage of the electrolytic capacitor at high temperatures, and thus improving the stability and reliability of the electrolytic capacitor.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A 125°C aluminum electrolytic capacitor with high reliability, comprising:

[0006] An aluminum shell outer frame;

[0007] A heat dissipation structure disposed on the aluminum shell outer frame;

[0008] The heat dissipation structure includes a copper round plate, a plurality of contact copper plates, a conduction plate, and a heat dissipation frame. The top of the outer wall of the copper round plate is fixedly disposed on the aluminum shell outer frame. One end of each of the plurality of contact copper plates close to each other is fixedly disposed on the copper round plate. One side of each of the plurality of contact copper plates close to each other is fixedly disposed on the aluminum shell outer frame. The plurality of contact copper plates are equidistantly arranged along the circumferential surface. The top of the outer wall of the conduction plate is fixedly disposed on the copper round plate. The top of the outer wall of the heat dissipation frame is fixedly disposed on the conduction plate.

[0009] As the 125°C aluminum electrolytic capacitor with high reliability of the utility model, a heat shrinkable sleeve is sleeved on the outer wall of the aluminum shell outer frame, and the outer walls of the plurality of contact copper plates and the copper round plate are embedded in the heat shrinkable sleeve.

[0010] As the 125°C aluminum electrolytic capacitor with high reliability of the utility model, an anode foil and a cathode foil are embedded in the inner wall of the aluminum shell outer frame. The anode foil and the cathode foil are wound around each other, and an electrolytic paper is provided for separation between them and on the outer wall.

[0011] As the high-reliability 125°C aluminum electrolytic capacitor of the present utility model, two lead wires are embedded between the anode foil and the cathode foil, and the two lead wires are respectively connected to the anode foil and the cathode foil.

[0012] As the high-reliability 125°C aluminum electrolytic capacitor of the present utility model, a rubber plug is embedded at the top of the inner wall of the aluminum shell frame, and the outer walls of the two lead wires are both embedded in the rubber plug.

[0013] The present utility model provides a high-reliability 125°C aluminum electrolytic capacitor. It has the following beneficial effects:

[0014] (1) For the high-reliability 125°C aluminum electrolytic capacitor, through the copper round plate, the contact copper plate, the conduction plate and the heat dissipation frame, heat dissipation can be used to reduce the stability of the surface of the electrolytic capacitor, thereby affecting the internal stability, and avoiding situations such as explosion or leakage of the electrolytic capacitor at high temperatures, so as to improve the stability and reliability of the electrolytic capacitor. Description of the Drawings

[0015] Figure 1 It is the front view of the present utility model;

[0016] Figure 2 It is the cross-sectional view of the present utility model;

[0017] Figure 3 It is the exploded view of the present utility model;

[0018] Figure 4 It is the top view of the present utility model;

[0019] Figure 5 It is the bottom view of the present utility model.

[0020] In the figure: 1. Aluminum shell frame; 2. Copper round plate; 3. Contact copper plate; 4. Conduction plate; 5. Heat dissipation frame; 6. Heat shrinkable sleeve; 7. Anode foil; 8. Cathode foil; 9. Lead wire; 10. Rubber plug. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5 , the present utility model provides a technical solution: a high-reliability 125°C aluminum electrolytic capacitor, including:

[0023] Aluminum shell frame 1;

[0024] The heat dissipation structure is provided on the aluminum shell outer frame 1;

[0025] The heat dissipation structure includes a copper round plate 2, a plurality of contact copper plates 3, a conduction plate 4 and a heat dissipation frame 5. The top of the outer wall of the copper round plate 2 is fixedly provided on the aluminum shell outer frame 1. One ends of the plurality of contact copper plates 3 close to each other are all fixedly provided on the copper round plate 2. One sides of the plurality of contact copper plates 3 close to each other are all fixedly provided on the aluminum shell outer frame 1. The plurality of contact copper plates 3 are arranged at equal distances along the circumferential surface. The top of the outer wall of the conduction plate 4 is fixedly provided on the copper round plate 2. The top of the outer wall of the heat dissipation frame 5 is fixedly provided on the conduction plate 4.

[0026] In this embodiment: The aluminum shell outer frame 1 serves as the shell of the electrolytic capacitor. The copper round plate 2 connects the plurality of contact copper plates 3 and is sleeved on the aluminum shell outer frame 1 to absorb the heat dissipated from the aluminum shell outer frame 1. The conduction plate 4 can reduce the heat transfer between the heat dissipation frame 5 and the copper round plate 2. The heat dissipation frame 5 is made of copper, and the increased heat dissipation area of the heat dissipation frame 5 enables the heat on the heat dissipation frame 5 to be taken away by the wind, thereby reducing the heat of the aluminum shell outer frame 1.

[0027] Specifically, a heat shrink sleeve 6 is sleeved on the outer wall of the aluminum shell outer frame 1. The outer walls of the plurality of contact copper plates 3 and the copper round plate 2 are all embedded in the heat shrink sleeve 6.

[0028] In this embodiment: After heating, the heat shrink sleeve 6 shrinks onto the plurality of contact copper plates 3 and the aluminum shell outer frame 1.

[0029] Specifically, an anode foil 7 and a cathode foil 8 are embedded in the inner wall of the aluminum shell outer frame 1. The anode foil 7 and the cathode foil 8 are wound around each other, and an electrolytic paper is provided between them and on the outer wall for separation.

[0030] In this embodiment: The anode foil 7 and the cathode foil 8 are respectively used as the positive and negative electrode materials of the electrolytic capacitor. The anode foil 7 has higher requirements for the purity and process of the light foil and needs to go through multiple processes such as corrosion, voltage application and formation, while the cathode foil 8 is relatively simple. The aluminum oxide insulating layer formed by the anode foil 7 is the key dielectric of the capacitor and has an important impact on the performance of the capacitor. The cathode foil 8 mainly plays a role through its natural oxide layer in contact with the electrolytic paper.

[0031] Specifically, two lead wires 9 are embedded between the anode foil 7 and the cathode foil 8, and the two lead wires 9 are respectively connected to the anode foil 7 and the cathode foil 8.

[0032] In this embodiment: Through the two lead wires 9, the inside of the capacitor can be connected to the external circuit to complete the input and output of signals.

[0033] Specifically, a rubber plug 10 is embedded in the top of the inner wall of the aluminum shell outer frame 1, and the outer walls of the two lead wires 9 are both embedded in the rubber plug 10.

[0034] In this embodiment: The internal components of the electrolytic capacitor can be sealed by the rubber plug 10 to prevent impurities such as moisture and dust in the external environment from entering the capacitor, thereby protecting the internal components of the capacitor from damage.

[0035] During use, the lead wire 9 can be used to connect the inside of the capacitor to the external circuit to complete the input and output of signals. The aluminum shell frame 1 is the outer shell of the electrolytic capacitor. The copper round plate 2 connects multiple contact copper plates 3 and is sleeved on the aluminum shell frame 1 to absorb the heat dissipated from the aluminum shell frame 1. The conduction plate 4 can reduce the heat transfer between the heat dissipation frame 5 and the copper round plate 2. The heat dissipation frame 5 is made of copper, and the heat dissipation area of the heat dissipation frame 5 is increased, so that the heat on the heat dissipation frame 5 can be carried away by the wind, thereby reducing the heat of the aluminum shell frame 1. The heat shrink sleeve 6 shrinks on the multiple contact copper plates 3 and the aluminum shell frame 1 after heating. The anode foil 7 and the cathode foil 8 are used as the positive and negative electrode materials of the electrolytic capacitor respectively. The anode foil 7 has higher requirements for the purity and process of the light foil and needs to go through multiple processes such as corrosion, voltage application, and formation, while the cathode foil 8 is relatively simple. The aluminum oxide insulating layer formed by the anode foil 7 is the key dielectric of the capacitor and has an important impact on the performance of the capacitor. The cathode foil 8 mainly plays a role through its natural oxide layer in contact with the electrolytic paper. The rubber plug 10 can seal the internal components of the electrolytic capacitor to prevent impurities such as moisture and dust in the external environment from entering the capacitor, thereby protecting the internal components of the capacitor from damage.

[0036] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. High-reliability 125°C aluminum electrolytic capacitor, characterized in that, Comprising: Aluminum shell outer frame (1); A heat dissipation structure provided on the aluminum shell outer frame (1); The heat dissipation structure includes a copper round plate (2), a plurality of contact copper plates (3), a conduction plate (4) and a heat dissipation frame (5). The top of the outer wall of the copper round plate (2) is fixedly provided on the aluminum shell outer frame (1). One end of each of the plurality of contact copper plates (3) close to each other is fixedly provided on the copper round plate (2). One side of each of the plurality of contact copper plates (3) close to each other is fixedly provided on the aluminum shell outer frame (1). The plurality of contact copper plates (3) are arranged at equal distances along the circumferential surface. The top of the outer wall of the conduction plate (4) is fixedly provided on the copper round plate (2). The top of the outer wall of the heat dissipation frame (5) is fixedly provided on the conduction plate (4).

2. The high-reliability 125°C aluminum electrolytic capacitor according to claim 1, wherein: A heat shrinkable sleeve (6) is sleeved on the outer wall of the aluminum shell outer frame (1). The outer walls of the plurality of contact copper plates (3) and the copper round plate (2) are all embedded in the heat shrinkable sleeve (6).

3. The high-reliability 125 °C aluminum electrolytic capacitor according to claim 2, wherein: An anode foil (7) and a cathode foil (8) are embedded in the inner wall of the aluminum shell outer frame (1). The anode foil (7) and the cathode foil (8) are wound around each other, and there is an electrolytic paper separator between them and on the outer wall.

4. The high-reliability 125°C aluminum electrolytic capacitor according to claim 3, characterized in that: Two lead wires (9) are embedded between the anode foil (7) and the cathode foil (8). The two lead wires (9) are respectively connected to the anode foil (7) and the cathode foil (8).

5. The high-reliability 125°C aluminum electrolytic capacitor according to claim 4, characterized in that: A rubber plug (10) is embedded in the top of the inner wall of the aluminum shell outer frame (1). The outer walls of the two lead wires (9) are both embedded in the rubber plug (10).

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