Aluminum electrolytic capacitor with compression-resistant structure

Abstract

The utility model discloses an aluminum electrolytic capacitor with a compression-resistant structure, which comprises an explosion-proof shell and a capacitor body, the capacitor body is assembled inside the explosion-proof shell, four groups of positioning blocks are respectively welded on four sides of the outer wall of the capacitor body, a group of hooks are respectively arranged on one side of each positioning block, and a group of elastic plates are respectively welded on four sides of the inner wall of the explosion-proof shell. According to the aluminum electrolytic capacitor with the compression-resistant structure, elastic plates, springs, hook feet, clamping grooves, positioning blocks and positioning grooves are arranged, the periphery of the outer wall of the capacitor body is provided with the elastic plates capable of being pressed, the elastic plates are supported by the springs and can deform under the action of external pressure, the capacitor body is protected against damage, the elastic plates are of a buckling structure limiting design, and the elastic plates are convenient to use. Even if the adhesive is aged or the structural part is loosened due to external impact, the elastic plate is not easy to deviate or fall off, so that the mechanical strength and durability of the aluminum electrolytic capacitor are effectively improved, the compression resistance effect is good, and the problem of poor compression resistance effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolytic capacitors, in particular to an aluminum electrolytic capacitor with a pressure-resistant structure. Background Art

[0002] Aluminum electrolytic capacitors are a commonly used type of capacitor that utilizes aluminum foil as electrodes and electrolyte as its medium to store and release charge.

[0003] There are two main methods for the pressure-resistant design of aluminum electrolytic capacitors on the market: thickening the capacitor shell and adding pressure-resistant components. Although thickening the capacitor shell can improve its mechanical strength, it will increase the volume and weight of the capacitor, which may not be suitable for use scenarios with strict space requirements. Adding pressure-resistant components can improve the pressure resistance without significantly increasing the volume, but these components are usually fixed by gluing. Over time, the glue may age and fall off, thereby reducing the overall durability and reliability of the capacitor.

[0004] Therefore, an aluminum electrolytic capacitor with a pressure-resistant structure is needed to solve the above technical defects. Utility Model Content

[0005] The purpose of the utility model is to provide an aluminum electrolytic capacitor with a pressure-resistant structure to solve the problem of poor pressure-resistant effect mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aluminum electrolytic capacitor with a pressure-resistant structure, comprising an explosion-proof shell and a capacitor body, the capacitor body being assembled inside the explosion-proof shell, four groups of positioning blocks being welded on four sides of the outer wall of the capacitor body, each side of the positioning block being provided with a group of hook feet, a group of elastic plates being welded on four sides of the inner wall of the explosion-proof shell, positioning grooves being respectively provided at four corners of the elastic plates, the positioning grooves being engaged with the positioning blocks, a card slot being respectively provided at the top and bottom ends of the elastic plates, the hook feet being fixedly engaged with the card slots, and a spring being fixedly connected between the elastic plates and the capacitor body.

[0007] Preferably, the capacitor body is a cylinder, and the elastic plate is a nylon material component with a curvature matching that of the capacitor body.

[0008] Preferably, a sealing rubber is welded around the top of the capacitor body, and two groups of pins are arranged on the top of the capacitor body.

[0009] Preferably, the pins extend to the outside, and insulating protection blocks are provided at the roots of the pins, and the surface of the insulating protection blocks is processed into a concave arc.

[0010] Preferably, four groups of pads are bonded to the bottom of the capacitor body at equal intervals, and the pads fill the gap between the explosion-proof housing and the capacitor body.

[0011] Preferably, the outer layer of the inner wall of the capacitor is provided with an outer sleeve, the inner layer of the outer sleeve is an anode foil, the inner layer of the anode foil is an electrolyte, the inner layer of the electrolyte is a cathode foil, and the inner wall of the capacitor is provided with multiple groups of teeth.

[0012] Preferably, the outer wall of the outer sleeve is fitted and sleeved with tooth blocks on the inner wall of the capacitor body, and the tooth blocks are distributed in a ring around the center of the capacitor body.

[0013] Preferably, the anode foil and the cathode foil have the same thickness, and the outer sleeve is thicker than the anode foil and the electrolyte.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the aluminum electrolytic capacitor with a pressure-resistant structure not only achieves good pressure-resistant effect, improves the stability of the internal structure, reduces displacement caused by high temperature, but also prevents pin breakage and provides insulation protection;

[0015] (1) By providing an elastic plate, a spring, a hook, a slot, a positioning block, and a positioning slot, a compressible elastic plate is provided around the outer wall of the capacitor body. The elastic plate is supported by a spring and can be deformed under the action of external pressure, thereby absorbing and dispersing the pressure and protecting the capacitor body from damage. The elastic plate adopts a buckle structure limit design, which is buckled by the hook and the slot, and the positioning block and the positioning slot are compactly embedded. Even when the adhesive is aged or the external impact causes the structure to become loose, it can ensure that the elastic plate will not easily deviate or fall off, thereby effectively improving the mechanical strength and durability of the aluminum electrolytic capacitor and having a good pressure resistance effect;

[0016] (2) By providing an outer sleeve, anode foil, electrolyte and cathode foil, the capacitor body is assembled with the outer sleeve of the inner wall in a concave-convex fitting manner. During the operation of the capacitor, the relative rotation of the internal positive and negative foils may cause poor contact or damage, thereby affecting the electrical performance and life of the capacitor. The fitting sleeve not only improves the stability of the internal structure, but also prevents the displacement of the internal anode foil, electrolyte and cathode foil caused by high temperature;

[0017] (3) By providing pins and insulating protection blocks, the pins are the key parts of the aluminum electrolytic capacitor connected to the circuit board and are also the relatively fragile parts of the capacitor. An insulating protection block is provided at the root of the pin. This design reduces the risk of breakage at the root of the pin, provides additional physical support for the pin, and reduces damage caused by mechanical stress or vibration. In addition, the insulating protection block also provides insulation protection to prevent possible short circuits or electrical failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2It is a schematic diagram of the cross-sectional structure of the tooth block of the utility model from top view;

[0020] Figure 3 This is a schematic diagram of the layered structure of the capacitor of the utility model;

[0021] Figure 4 For the utility model Figure 1 A in the middle is a schematic diagram of the enlarged structure viewed from the front.

[0022] In the figure: 1. pin; 2. insulating protection block; 3. sealing rubber; 4. capacitor body; 5. explosion-proof shell; 6. outer sleeve; 7. pad; 8. hook; 9. slot; 10. positioning slot; 11. positioning block; 12. spring; 13. elastic plate; 14. tooth block; 15. anode foil; 16. electrolyte; 17. cathode foil. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4 , an aluminum electrolytic capacitor with a pressure-resistant structure, comprising an explosion-proof shell 5 and a capacitor body 4, the explosion-proof shell 5 is equipped with the capacitor body 4, four groups of positioning blocks 11 are welded on the four sides of the outer wall of the capacitor body 4, and a group of hook feet 8 are respectively arranged on one side of the positioning block 11, and a group of elastic plates 13 are welded on the four sides of the inner wall of the explosion-proof shell 5, and positioning grooves 10 are respectively provided at the four corners of the elastic plate 13, and the positioning grooves 10 are engaged with the positioning blocks 11, and the top and bottom ends of the elastic plate 13 are respectively provided with a card slot 9, and the hook feet 8 are fixedly engaged with the card slot 9, and a spring 12 is fixedly connected between the elastic plate 13 and the capacitor body 4, the capacitor body 4 is a cylinder, and the elastic plate 13 is a nylon material component with a curvature matching the capacitor body 4, and four groups of pads 7 are bonded to the bottom of the capacitor body 4 at equal intervals, and the pads 7 fill the gap between the explosion-proof shell 5 and the capacitor body 4;

[0025] Specifically, Figure 1 and Figure 4 As shown, compressible elastic plates 13 are arranged around the outer wall of the capacitor body 4. The elastic plates 13 are supported by springs 12 and can be deformed under the action of external pressure, thereby absorbing and dispersing the pressure and protecting the capacitor body 4 from damage. The elastic plates 13 adopt a buckle structure limit design, which is buckled by the hook feet 8 and the card slots 9, and the positioning blocks 11 and the positioning slots 10 are compactly embedded. Even when the adhesive is aged or the structure is loosened due to external impact, it can ensure that the elastic plates 13 will not be easily offset or fall off.

[0026] Embodiment 2: The outer layer of the inner wall of the capacitor body 4 is provided with an outer sleeve 6, the inner layer of the outer sleeve 6 is an anode foil 15, the inner layer of the anode foil 15 is an electrolyte 16, the inner layer of the electrolyte 16 is a cathode foil 17, and the inner wall of the capacitor body 4 is provided with multiple groups of tooth blocks 14, the outer wall of the outer sleeve 6 is fitted with the tooth blocks 14 on the inner wall of the capacitor body 4, the tooth blocks 14 are distributed in an annular shape about the center of the capacitor body 4, the anode foil 15 and the cathode foil 17 have the same thickness, and the outer sleeve 6 is thicker than the anode foil 15 and the electrolyte 16;

[0027] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the capacitor body 4 is assembled with the outer sleeve 6 of the inner wall by a concave-convex interlocking method. During the operation of the capacitor, the relative rotation of the internal positive and negative foils may cause poor contact or damage, thereby affecting the electrical performance and life of the capacitor. The interlocking sleeve connection not only improves the stability of the internal structure, but also prevents the displacement of the internal anode foil 15, electrolyte 16 and cathode foil 17 caused by high temperature.

[0028] Embodiment 3: A sealing rubber 3 is welded around the top of the capacitor body 4, two groups of pins 1 are arranged on the top of the capacitor body 4, the pins 1 extend to the outside, and insulating protection blocks 2 are arranged at the roots of the pins 1, and the surface of the insulating protection blocks 2 is processed into a concave arc;

[0029] Specifically, Figure 1 As shown, pin 1 is the key part of the aluminum electrolytic capacitor connected to the circuit board, and is also a relatively fragile part of the capacitor. An insulating protection block 2 is provided at the root of pin 1. This design reduces the risk of breakage at the root of pin 1, provides additional physical support for pin 1, and reduces damage caused by mechanical stress such as plug-in force or vibration. In addition, the insulating protection block 2 also provides insulation protection to prevent possible short circuits or electrical failures.

[0030] Working principle: In an aluminum electrolytic capacitor, the anode foil 15 acts as the anode, and its surface is chemically treated to form a thin aluminum oxide film, which acts as the dielectric of the capacitor. The other foil is the cathode foil 17, and a conductive electrolyte 16 is filled between the two. When voltage is applied across the capacitor 4, the aluminum oxide layer of the anode blocks the direct flow of current and stores it in the capacitor 4.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An aluminum electrolytic capacitor with a pressure-resistant structure, comprising an explosion-proof housing (5) and a capacitor body (4), characterized in that: A capacitor (4) is assembled inside the explosion-proof housing (5). Four groups of positioning blocks (11) are welded on four sides of the outer wall of the capacitor (4). A group of hook feet (8) is provided on one side of each positioning block (11). A group of elastic plates (13) are welded on four sides of the inner wall of the explosion-proof housing (5). Positioning grooves (10) are respectively provided at four corners of the elastic plates (13). The positioning grooves (10) are engaged with the positioning blocks (11). A clamping groove (9) is respectively provided at the top and bottom of the elastic plates (13). The hook feet (8) are fixedly engaged with the clamping grooves (9). A spring (12) is fixedly connected between the elastic plates (13) and the capacitor (4).

2. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 1, characterized in that: The capacitor body (4) is a cylinder, and the elastic plate (13) is a nylon material component with a curvature matching that of the capacitor body (4).

3. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 1, characterized in that: A sealing rubber (3) is welded around the top of the capacitor (4), and two groups of pins (1) are arranged on the top of the capacitor (4).

4. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 3, characterized in that: The pins (1) extend to the outside, and the roots of the pins (1) are provided with insulating protection blocks (2), and the surfaces of the insulating protection blocks (2) are processed into concave arcs.

5. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 1, characterized in that: Four groups of cushion blocks (7) are bonded to the bottom of the capacitor body (4) at equal intervals, and the cushion blocks (7) fill the gap between the explosion-proof housing (5) and the capacitor body (4).

6. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 1, characterized in that: The outer layer of the inner wall of the capacitor body (4) is provided with an outer sleeve (6), the inner layer of the outer sleeve (6) is an anode foil (15), the inner layer of the anode foil (15) is an electrolyte (16), the inner layer of the electrolyte (16) is a cathode foil (17), and the inner wall of the capacitor body (4) is provided with multiple groups of tooth blocks (14).

7. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 6, characterized in that: The outer wall of the outer sleeve (6) is fitted and sleeved with the tooth blocks (14) on the inner wall of the capacitor body (4), and the tooth blocks (14) are distributed in a ring shape with respect to the center of the capacitor body (4).

8. The aluminum electrolytic capacitor with a pressure-resistant structure according to claim 6, characterized in that: The anode foil (15) and the cathode foil (17) have the same thickness, and the outer sleeve (6) is thicker than the anode foil (15) and the electrolyte (16).

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