Aluminum electrolytic capacitor with good safety performance

Abstract

The utility model provides a good safety performance aluminum electrolytic capacitor, including shell, seal and core package, and the core package is sealedly arranged in the shell through the seal, and the bottom or side of shell is provided with explosion -proof valve, and the explosion -proof valve is provided with aluminium spacer between the core package, and the aluminium spacer is provided with vent hole, and the vent hole can be single -hole or multi -hole, but needs a hole to be opposite explosion -proof valve center, in the utility model, through the setting of isolation bucket or isolation sheet makes the explosion -proof valve of aluminum electrolytic capacitor when opening valve, electrolytic paper is not easy to spray from the shell, that is maximum limit is limited in the core package, thereby reducing the fire and explosion caused by the positive pole and negative pole short circuit of capacitor when explosion -proof valve opening valve.

Description

Technical Field

[0001] This utility model relates to an aluminum electrolytic capacitor, and more particularly to an aluminum electrolytic capacitor with good safety performance. Background Technology

[0002] Aluminum electrolytic capacitors are indispensable components in electronic devices, widely used in industrial power supplies, automotive electronics, medical equipment, and other fields. Their core functions include energy storage, filtering, and voltage regulation, with significant demand particularly in high-voltage, high-capacity applications. However, with the miniaturization and increasing power of electronic devices, the internal pressure management of capacitors has become increasingly prominent. Inadequate pressure release mechanisms, such as the delayed pressure release in traditional explosion-proof designs, can easily lead to internal component rupture or electrolyte ejection. Furthermore, excessive internal pressure in aluminum electrolytic capacitors can cause the electrolytic paper to be pulled out from the explosion-proof valve, resulting in a short circuit between the positive and negative electrodes, potentially leading to an explosion or even a fire. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an aluminum electrolytic capacitor with good safety performance.

[0004] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows: an aluminum electrolytic capacitor with good safety performance, including a shell, a sealing element and a core, wherein the core is sealed inside the shell by the sealing element, and an explosion-proof valve is provided at the bottom or side of the shell; an aluminum isolator is provided between the core and the explosion-proof valve of the shell, and one or more vent holes are provided on the aluminum isolator, one of which is directly opposite the explosion-proof valve.

[0005] Preferably, in the aforementioned aluminum electrolytic capacitor with good safety performance, the explosion-proof valve is located on the side of the outer casing, the aluminum insulating component includes an insulating barrel with a vent hole, and the core package is located inside the aluminum insulating component.

[0006] Preferably, in the aforementioned aluminum electrolytic capacitor with good safety performance, the height of the aluminum separator is less than the height of the core, and the bottom of the aluminum separator is flush with the bottom of the core.

[0007] Preferably, in the aforementioned aluminum electrolytic capacitor with good safety performance, the explosion-proof valve is located at the bottom of the outer casing, and the aluminum insulating component includes an insulating sheet, which is located at the bottom of the core package.

[0008] Compared with the prior art, the advantages of this utility model are as follows: In this utility model, by setting up an isolation barrel or isolation plate, the electrolytic paper is not easily ejected from the outer shell when the explosion-proof valve of the aluminum electrolytic capacitor is opened, that is, it is confined to the core package to the maximum extent; thereby reducing the risk of fire and explosion caused by short circuit between the positive and negative terminals of the capacitor when the explosion-proof valve is opened. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the aluminum electrolytic capacitor with good safety performance in Example 1.

[0010] Figure 2 This is a cross-sectional view of the aluminum electrolytic capacitor with good safety performance in Example 1.

[0011] Figure 3 This is a schematic diagram of the aluminum separator in Example 1.

[0012] Figure 4 This is a cross-sectional view of the aluminum electrolytic capacitor with good safety performance in Example 2.

[0013] Figure 5 This is a schematic diagram of the structure of the isolation sheet in Example 2.

[0014] Legend

[0015] 1. Outer shell; 2. Explosion-proof valve; 3. Seal; 4. Core package; 5. Aluminum isolation component; 6. Vent hole; 7. Isolation plate. Detailed Implementation

[0016] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0017] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0018] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention. Example 1

[0019] like Figures 1-3 The diagram illustrates a high-safety-performance aluminum electrolytic capacitor, comprising a housing 1, a sealing element 3, and a core 4. The core 4 is sealed within the housing 1 by the sealing element 3. An explosion-proof valve 2 is located on the bottom or side of the housing 1. An aluminum isolator is positioned between the explosion-proof valve 2 and the core 4, and the aluminum isolator has vent holes 7. Multiple vent holes are provided on the aluminum isolator, one of which faces the explosion-proof valve. In this embodiment, the sealing element 3 is a cover plate; in other embodiments, the sealing element 3 can be a rubber plug.

[0020] In this embodiment, as Figure 1 As shown, the explosion-proof valve 2 is located on the side of the outer casing 1. The aluminum isolation component includes an isolation barrel with a vent hole 7. The core package 4 is located inside the aluminum isolation component 5. The height of the aluminum isolation component 5 is less than the height of the core package 4, and the bottom of the aluminum isolation component 5 is flush with the bottom of the core package 4.

[0021] In this embodiment, the aluminum isolator is provided with multiple vent holes, one of which faces the explosion-proof valve on the side of the outer casing; in this way, the gas generated on the core package can be applied to the explosion-proof valve in a timely manner through the vent hole; preventing the aluminum isolator from hindering the normal operation of the explosion-proof valve.

[0022] In this embodiment, the aluminum insulating member 5 is sleeved on the side of the core package 4. When the explosion-proof valve 2 is opened, the electrolytic paper is confined within the aluminum insulating member 5 and will not be "extracted" along with the gas generated inside the outer casing 1. This reduces the possibility of fire and explosion caused by a short circuit between the anode foil and the cathode foil due to the electrolytic paper being "extracted". Example 2

[0023] In this embodiment, the explosion-proof valve 2 is located at the bottom of the housing 1. For example... Figure 4 and Figure 5 As shown, the aluminum insulating component includes an insulating plate, which is disposed at the bottom of the core package 4; the insulating plate is provided with multiple vent holes 7, one of which is directly opposite the explosion-proof valve at the bottom of the outer casing. The other parts of this embodiment are the same as those in embodiment 1.

Claims

1. An aluminum electrolytic capacitor having a high safety performance, characterized by: The device includes a housing, a seal, and a core package. The core package is sealed inside the housing by the seal. An explosion-proof valve is provided on the bottom or side of the housing. An aluminum isolator is provided between the core package and the explosion-proof valve of the housing. The aluminum isolator has one or more vent holes, one of which faces the explosion-proof valve.

2. The aluminum electrolytic capacitor with good safety performance according to claim 1, characterized in that: The explosion-proof valve is located on the side of the outer shell, and the aluminum isolation component includes an isolation barrel with a vent hole; the core package is located inside the aluminum isolation component.

3. The aluminum electrolytic capacitor with good safety performance according to claim 1 or 2, characterized in that: The height of the aluminum separator is less than the height of the core package, and the bottom of the aluminum separator is flush with the bottom of the core package.

4. The aluminum electrolytic capacitor with good safety performance according to claim 1, characterized in that: The explosion-proof valve is located at the bottom of the housing, and the aluminum insulating component includes an insulating plate, which is located at the bottom of the core package.

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