Small-sized high-voltage aluminum electrolytic capacitor with PD fast charging function

Abstract

The utility model discloses a PD fast charging miniature high-voltage aluminum electrolytic capacitor, which comprises a shell, the outer surface of the shell is fixedly connected with an outer protective sleeve, the outer surface of the outer protective sleeve is provided with a pressure-resistant convex sleeve, the inner wall of the shell is fixedly connected with a top cover, the middle part of the upper surface of the top cover is fixedly connected with a supporting block, and the middle part of the upper surface of the top cover is fixedly connected with the supporting block. According to the PD fast-charging small-sized high-voltage aluminum electrolytic capacitor, the core bag is fixed between the top cover and the sealing base, the top of the shell is provided with a through hole, the top cover is fixed on the inner top wall of the shell through a cylindrical block, and the supporting block and the protective cover are arranged above the top cover, so that the top of the capacitor can be protected; the top of the shell is prevented from being directly impacted, the outer protective sleeve and the pressure-resistant convex sleeve can prevent the outer part of the shell from being directly impacted, and a gap exists between the core package and the shell after installation, so that the core package can be prevented from being directly extruded after the shell is stressed and deformed, and multi-directional and multi-layer protection can be performed on the capacitor.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic capacitors, and particularly relates to a small high-voltage aluminum electrolytic capacitor for PD fast charging. Background Art

[0002] An electrolytic capacitor is a type of capacitor. The metal foil serves as the positive electrode (aluminum or tantalum), and the oxide film (aluminum oxide or tantalum pentoxide) that closely adheres to the positive electrode is the dielectric. The cathode is jointly composed of a conductive material, an electrolyte (the electrolyte can be liquid or solid), and other materials. Since the electrolyte is the main part of the cathode, the electrolytic capacitor gets its name.

[0003] After retrieval, in the Chinese utility model patent publication number CN216450521U, a miniaturized high-voltage large-capacity aluminum electrolytic capacitor is disclosed. By providing a sealing layer to play a sealing role, it prevents external water vapor from entering the aluminum shell. The waterproof layer cooperates with the water absorption layer to further improve the waterproof effect and ensure the normal use of the capacitor. When the existing electrolytic capacitor is in use, there is a lack of a structure for protecting the capacitor, which can cause damage to the outside of the capacitor, and the protection effect is not good. At the same time, when the existing capacitor is damaged, it will be directly discarded, and the capacitor housing and the core package cannot be separated, and it is impossible to only discard the damaged part and retain the intact part for recycling. Therefore, there is a need for an aluminum electrolytic capacitor that can both protect the capacitor and ensure resource recycling. Summary of the Utility Model

[0004] The main purpose of the present utility model is to provide a small high-voltage aluminum electrolytic capacitor for PD fast charging, which can effectively solve the problems in the background art.

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

[0006] A small high-voltage aluminum electrolytic capacitor for PD fast charging includes a housing. An outer protective sleeve is fixedly connected to the outer surface of the housing. A compressive convex sleeve is arranged on the outer surface of the outer protective sleeve. A top cover is fixedly connected to the inner wall of the housing. A support block is fixedly connected to the middle of the upper surface of the top cover. A protective cover is fixedly connected to the upper surface of the support block. A core package is fixedly connected to the inner wall of the top cover. A cylindrical block is fixedly connected to the upper surface of the top cover; the core package includes an anode foil, an isolation paper one is fixedly connected to the outer surface of the anode foil, a cathode foil is fixedly connected to the outer surface of the isolation paper one, an isolation paper two is fixedly connected to the outer surface of the cathode foil, a positive electrode lead-out strip is fixedly connected to the inner wall of the anode foil, and a negative electrode lead-out strip is fixedly connected to the inner wall of the cathode foil.

[0007] In order to achieve the effect of sealing the bottom of the housing, as a small high-voltage aluminum electrolytic capacitor for PD fast charging of the present utility model, a clamping seat is fixedly connected to the outer surface of the housing, and a sealing base is fixedly connected to the inner wall of the housing.

[0008] In order to achieve the effect of cooperating with the card seat to fix the sealed base, as a small high-voltage aluminum electrolytic capacitor for PD fast charging of the present utility model, a clamping block is fixedly connected to the upper surface of the sealed base. The clamping block includes a base, an inner spring is fixedly connected to the inner wall of the base, and a clamping corner is fixedly connected to the outer surface of the base.

[0009] In order to achieve the effect of assisting in supporting the bottom of the capacitor, as a small high-voltage aluminum electrolytic capacitor for PD fast charging of the present utility model, a support spring is fixedly connected to the lower surface of the sealed base, and a bottom plate is fixedly connected to the lower surface of the support spring.

[0010] In order to achieve the effect of facilitating the fixing of the welding strip, as a small high-voltage aluminum electrolytic capacitor for PD fast charging of the present utility model, a positive connection column is fixedly connected to the lower surface of the positive lead-out strip, and a negative connection column is fixedly connected to the lower surface of the negative lead-out strip.

[0011] In order to achieve the effect of fixing the bottom ends of the positive connection column and the negative connection column, as a small high-voltage aluminum electrolytic capacitor for PD fast charging of the present utility model, a welding strip is fixedly connected to the outer surfaces of the positive connection column and the negative connection column, and a limiting ring is threadedly connected to the bottom ends of the positive connection column and the negative connection column.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1. For this small high-voltage aluminum electrolytic capacitor for PD fast charging, through the settings of the outer protective sleeve, the compressive convex sleeve, the top cover, the support block and the protective cover, the core package is fixed between the top cover and the sealed base. There is a through hole at the top of the outer shell, and the top cover is fixed on the inner top wall of the outer shell through a cylindrical block. Above the top cover are the support block and the protective cover, which can protect the top of the capacitor and prevent the top of the outer shell from being directly impacted. The outer protective sleeve and the compressive convex sleeve can prevent the outside of the outer shell from being directly impacted, and there is a gap between the core package and the outer shell after installation. After the outer shell is deformed by force, it can prevent it from directly squeezing the core package, so as to protect the capacitor in multiple directions and multiple layers and avoid the problem that the outside of the capacitor is easily damaged.

[0014] 2. For this small high-voltage aluminum electrolytic capacitor for PD fast charging, through the settings of the sealed base, the card seat and the clamping block, there are four card seats at the bottom of the outer surface of the outer shell, and four clamping blocks are fixed on the sealed base. When fixing the sealed base, the card seats and the clamping blocks are made to correspond to each other, and the clamping block is inserted into the card seat to complete the fixing of the sealed base. When disassembling, the clamping block is made to leave the card seat, and then the sealed base can be removed to replace the damaged outer shell or the damaged core package, so as to facilitate the recycling of the undamaged components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1Schematic diagram of the structure of a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model;

[0016] Figure 2 Axonometric structure diagram of the bottom view of a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model;

[0017] Figure 3 Front view cross-sectional structure diagram of a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model;

[0018] Figure 4 Explosion structure diagram of the outer shell in a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model;

[0019] Figure 5 Explosion structure diagram of the top cover in a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model;

[0020] Figure 6 Axonometric structure diagram of the sealed base in a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model;

[0021] Figure 7 A small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model Figure 6 Enlarged structure diagram at position A;

[0022] Figure 8 Composition structure diagram of the core package in a small high-voltage aluminum electrolytic capacitor for 1PD fast charging in the embodiment of the present utility model.

[0023] In the figure: 1. Outer shell; 2. Outer protective sleeve; 3. Compressive convex sleeve; 4. Top cover; 5. Support block; 6. Protective cover; 7. Core package; 701. Second isolation paper; 702. Cathode foil; 703. Negative electrode lead strip; 704. First isolation paper; 705. Anode foil; 706. Positive electrode lead strip; 8. Cylindrical block; 9. Positive electrode connecting column; 10. Negative electrode connecting column; 11. Welding strip; 12. Limiting ring; 13. Sealed base; 14. Support spring; 15. Bottom plate; 16. Card seat; 17. Card block; 1701. Base; 1702. Inner spring; 1703. Card corner. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Example 1

[0026] As Figure 1-8 shown, a PD fast charging small high-voltage aluminum electrolytic capacitor includes a housing 1. An outer protective sleeve 2 is fixedly connected to the outer surface of the housing 1. A compressive convex sleeve 3 is arranged on the outer surface of the outer protective sleeve 2. A top cover 4 is fixedly connected to the inner wall of the housing 1. A support block 5 is fixedly connected to the middle of the upper surface of the top cover 4. A protective cover 6 is fixedly connected to the upper surface of the support block 5. A core package 7 is fixedly connected to the inner wall of the top cover 4. A cylindrical block 8 is fixedly connected to the upper surface of the top cover 4;

[0027] The core package 7 includes an anode foil 705. An insulating paper one 704 is fixedly connected to the outer surface of the anode foil 705. A cathode foil 702 is fixedly connected to the outer surface of the insulating paper one 704. An insulating paper two 701 is fixedly connected to the outer surface of the cathode foil 702. A positive electrode lead strip 706 is fixedly connected to the inner wall of the anode foil 705. A negative electrode lead strip 703 is fixedly connected to the inner wall of the cathode foil 702.

[0028] During specific use, through the settings of the outer protective sleeve 2, the compressive convex sleeve 3, the top cover 4, the support block 5 and the protective cover 6, the outside of the capacitor housing 1 is a combination of the outer protective sleeve 2 and the compressive convex sleeve 3, the top is a combination of the top cover 4, the support block 5 and the protective cover 6, the bottom is a sealing base 13, the core package 7 is fixed between the top cover 4 and the sealing base 13, there is a through hole at the top of the housing 1, the top cover 4 is fixed on the inner top wall of the housing 1 through the cylindrical block 8, above the top cover 4 are the support block 5 and the protective cover 6, which can protect the top of the capacitor and prevent the top of the housing 1 from being directly impacted. The outer protective sleeve 2 and the compressive convex sleeve 3 can prevent the outside of the housing 1 from being directly impacted, and there is a gap between the core package 7 and the housing 1 after installation. After the housing 1 is deformed by force, it can prevent it from directly squeezing the core package 7, so as to protect the capacitor in multiple directions and multiple layers and avoid the problem that the outside of the capacitor is easily damaged.

[0029] In this embodiment, a card seat 16 is fixedly connected to the outer surface of the housing 1, and a sealing base 13 is fixedly connected to the inner wall of the housing 1.

[0030] During specific use, through the setting of the sealing base 13, the bottom of the housing 1 is sealed.

[0031] In this embodiment, a clamping block 17 is fixedly connected to the upper surface of the sealing base 13. The clamping block 17 includes a base 1701. An inner spring 1702 is fixedly connected to the inner wall of the base 1701. A clamping corner 1703 is fixedly connected to the outer surface of the base 1701.

[0032] During specific use, through the setting of the clamping block 17, the sealing base 13 is fixed in cooperation with the card seat 16.

[0033] In this embodiment, a support spring 14 is fixedly connected to the lower surface of the sealing base 13, and a bottom plate 15 is fixedly connected to the lower surface of the support spring 14.

[0034] During specific use, through the settings of the support spring 14 and the bottom plate 15, the bottom of the capacitor is supported assistantly.

[0035] In this embodiment, a positive connection post 9 is fixedly connected to the lower surface of the positive lead bar 706, and a negative connection post 10 is fixedly connected to the lower surface of the negative lead bar 703.

[0036] During specific use, through the settings of the positive connection post 9 and the negative connection post 10, it is convenient to fix the welding bar 11.

[0037] In this embodiment, a welding bar 11 is fixedly connected to the outer surfaces of the positive connection post 9 and the negative connection post 10, and a limiting ring 12 is threadedly connected to the bottom ends of the positive connection post 9 and the negative connection post 10.

[0038] During specific use, through the setting of the limiting ring 12, the bottom ends of the positive connection post 9 and the negative connection post 10 are fixed.

[0039] Working principle: The core package 7 is fixed between the top cover 4 and the sealing base 13. There is a through hole at the top of the outer shell 1. The top cover 4 is fixed to the inner top wall of the outer shell 1 through the cylindrical block 8. Above the top cover 4 are the support block 5 and the protective cover 6, which can protect the top of the capacitor and prevent the top of the outer shell 1 from being directly impacted. The outer protective sleeve 2 and the compression-resistant convex sleeve 3 can prevent the outside of the outer shell 1 from being directly impacted. And there is a gap between the core package 7 and the outer shell 1 after installation, which can prevent the outer shell 1 from directly squeezing the core package 7 after the outer shell 1 is deformed by force; when fixing the sealing base 13, make the card seat 16 and the card block 17 correspond to each other, insert the card block 17 into the card seat 16 to complete the fixation of the sealing base 13. When disassembling, make the card block 17 leave the card seat 16, and then the sealing base 13 can be removed to replace the damaged outer shell 1 or the damaged core package 7.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A small high-voltage aluminum electrolytic capacitor for PD fast charging, comprising a housing (1), characterized in that: The outer surface of the housing (1) is fixedly connected with an outer protective sleeve (2). The outer surface of the outer protective sleeve (2) is provided with a compressive convex sleeve (3). The inner wall of the housing (1) is fixedly connected with a top cover (4). The middle of the upper surface of the top cover (4) is fixedly connected with a support block (5). The upper surface of the support block (5) is fixedly connected with a protective cover (6). The inner wall of the top cover (4) is fixedly connected with a core package (7). The upper surface of the top cover (4) is fixedly connected with a cylindrical block (8).

2. A small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 1, characterized in that: The outer surface of the housing (1) is fixedly connected with a card seat (16). The inner wall of the housing (1) is fixedly connected with a sealing base (13).

3. A small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 2, characterized in that: The upper surface of the sealing base (13) is fixedly connected with a clamping block (17). The clamping block (17) includes a base (1701). The inner wall of the base (1701) is fixedly connected with an inner spring (1702). The outer surface of the base (1701) is fixedly connected with a clamping corner (1703).

4. The small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 2, characterized in that: The lower surface of the sealing base (13) is fixedly connected with a support spring (14). The lower surface of the support spring (14) is fixedly connected with a bottom plate (15).

5. A small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 1, characterized in that: The core package (7) includes an anode foil (705). The outer surface of the anode foil (705) is fixedly connected with a first isolation paper (704). The outer surface of the first isolation paper (704) is fixedly connected with a cathode foil (702). The outer surface of the cathode foil (702) is fixedly connected with a second isolation paper (701).

6. A small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 5, characterized in that: The inner wall of the anode foil (705) is fixedly connected with a positive electrode lead-out strip (706). The inner wall of the cathode foil (702) is fixedly connected with a negative electrode lead-out strip (703).

7. A small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 6, characterized in that: The lower surface of the positive electrode lead-out strip (706) is fixedly connected with a positive electrode connection column (9). The lower surface of the negative electrode lead-out strip (703) is fixedly connected with a negative electrode connection column (10).

8. A small high-voltage aluminum electrolytic capacitor for PD fast charging according to claim 7, characterized in that: The outer surfaces of the positive electrode connection column (9) and the negative electrode connection column (10) are fixedly connected with welding strips (11). The bottoms of the positive electrode connection column (9) and the negative electrode connection column (10) are threadedly connected with limiting rings (12).

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