Shock-resistant and low-temperature-resistant aluminum electrolytic capacitor

Abstract

The utility model relates to the technical field of aluminum electrolytic capacitors, and discloses a shock-resistant and low-temperature-resistant aluminum electrolytic capacitor, a protective housing is installed outside a capacitor main body, the protective housing is made of a thermal insulation material, and the capacitor main body is installed in a closed structure formed by the protective housing and a housing sealing cover in an embedded manner. After the capacitor body is installed, the capacitor body is located in a closed inner cavity formed by the protective shell cover, the influence of external low temperature on work of the capacitor body can be reduced, and the low-temperature resistance of the capacitor body can be effectively improved, an electrode needle column is arranged at the end of the capacitor body, and a supporting pressing plate is movably installed on the upper portion of the electrode needle column in a sleeving mode. The thrust spring is installed on the upper side of the supporting pressing plate in an abutting mode, after installation, the thrust spring is used for providing elastic pre-tightening force for the supporting pressing plate, stable elastic tensioning supporting can be provided for the electrode needle column connecting position of the capacitor body, the capacitor body can be prevented from swinging and shaking when subjected to shaking impact, and improvement of the anti-vibration characteristic of the capacitor body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolytic capacitors, in particular to a shock-resistant and low-temperature-resistant aluminum electrolytic capacitor. Background Art

[0002] Aluminum electrolytic capacitors are generally composed of aluminum shells, capacitor cores and rubber covers. The capacitor core generally includes positive and negative guide pins, positive aluminum foil, negative aluminum foil, and at least one layer of electrolytic paper. Aluminum electrolytic capacitors are widely used in the rectifier and filter circuits of frequency converters because of their large capacity and low price. Aluminum electrolytic capacitors have high reliability and are widely used in the control circuits of various electrical appliances and machinery.

[0003] Aluminum electrolytic capacitors are fixed on the upper part of the circuit board by pin-column welding during installation. The installation of aluminum electrolytic capacitors mainly relies on pin-column support. Aluminum electrolytic capacitors installed on the upper part of the vehicle or motor circuit board will be affected by external vibration during operation. When subjected to large external shaking impact, the pins of the aluminum electrolytic capacitors are prone to breakage due to shaking. In addition, due to the lack of effective low-temperature protection structure, aluminum electrolytic capacitors will be affected by the low-temperature environment when used in severe cold and low-temperature areas such as the northern region, affecting the normal operation of the aluminum electrolytic capacitors. Utility Model Content

[0004] The utility model aims to provide a shock-resistant and low-temperature-resistant aluminum electrolytic capacitor to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock-resistant and low-temperature-resistant aluminum electrolytic capacitor, comprising a capacitor body, a protective mechanism is arranged outside the capacitor body, the protective mechanism comprises a protective shell cover, a shell cover cover, a thrust spring and a supporting pressure plate, and the capacitor body is embedded and installed in a closed structure formed by the protective shell cover and the shell cover cover;

[0006] An electrode needle column is arranged at the end of the capacitor body, and the electrode needle column penetrates the shell cover. The support pressure plate movable sleeve is installed on the upper part of the electrode needle column, and the thrust spring is installed against the upper side of the support pressure plate.

[0007] Preferably, the number of the electrode needle posts is two, and the two electrode needle posts are symmetrically fixed on both sides of the front end of the capacitor body.

[0008] Preferably, a capacitor mounting hole is provided inside the protective shell cover, the capacitor mounting hole is matched with the capacitor body, and the capacitor body is embedded and inserted into the capacitor mounting hole.

[0009] Preferably, a mating ring seat is provided on the rear side of the shell cover, and the mating ring seat matches the front opening of the capacitor mounting hole. The shell cover is mounted on the opening side of the protective shell cover through the mating ring seat, and an installation support pad is fixed in the rear groove of the shell cover.

[0010] Preferably, a needle post through-hole is provided through the middle of the shell cover, the needle post through-hole is matched with the electrode needle post, and the electrode needle post is inserted through the inner side of the needle post through-hole.

[0011] Preferably, both sides of the support pressing plate are provided with sliding guide holes, the sliding guide holes are adapted to the electrode needle column, and the support pressing plate is slidably mounted on the upper part of the electrode needle column through the sliding guide holes.

[0012] Preferably, spring limiting grooves are provided on opposite sides of the shell cover and the supporting pressure plate, the thrust spring is installed in abutment between the shell cover and the supporting pressure plate, and the end of the thrust spring is embedded in the inner side of the spring limiting groove.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0014] This capacitor adopts a shell-type protection structure. A protective shell is installed on the outside of the capacitor body. The protective shell is made of thermal insulation material. After installation, the capacitor body is in a closed inner cavity formed by the protective shell, which can reduce the impact of external low temperature on the work of the capacitor body, and can effectively improve the low-temperature resistance of the capacitor body. In addition, a supporting pressure plate is provided at the electrode needle column of the capacitor body. After installation, a thrust spring is used to provide an elastic pre-tightening force for the supporting pressure plate, which can provide a stable elastic tensioning support for the connection of the electrode needle column of the capacitor body, and can prevent the capacitor body from swaying when subjected to shaking impact, which can effectively improve the installation stability of the capacitor body and is conducive to improving the seismic resistance of the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall upper structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall lower structure of the utility model;

[0018] Figure 3This is a schematic diagram of the overall split front structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the overall disassembled rear structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the partial cross-sectional structure inside the protective shell cover of the utility model.

[0021] Explanation of the accompanying drawings: 1. Capacitor body; 2. Electrode needle column; 3. Protective shell cover; 4. Shell cover cover; 5. Thrust spring; 6. Support pressure plate; 7. Capacitor mounting hole; 8. Engaging ring seat; 9. Needle column through hole; 10. Mounting support pad; 11. Spring limit groove. DETAILED DESCRIPTION

[0022] 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.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0024] Example

[0025] See also Figure 1-5 The utility model provides a technical solution: a shock-resistant and low-temperature resistant aluminum electrolytic capacitor, comprising a capacitor body 1, the capacitor body 1 is an aluminum electrolytic capacitor, in order to facilitate the connection and installation of the capacitor body 1, an electrode needle column 2 is arranged at the end of the capacitor body 1, and the number of the electrode needle column 2 is two, as shown in the attached Figure 3 As shown, two electrode needle posts 2 are symmetrically fixed on both sides of the front end of the capacitor body 1.

[0026] In order to improve the installation protection of the capacitor body 1, a protection mechanism is arranged outside the capacitor body 1, and the protection mechanism includes a protection shell cover 3, a shell cover cover 4, a thrust spring 5 and a support pressure plate 6. A composite glass fiber interlayer is arranged inside the protection shell cover 3, which has good thermal insulation properties. In order to facilitate the embedded installation of the capacitor body 1, a capacitor installation hole 7 is arranged inside the protection shell cover 3. The capacitor installation hole 7 is adapted to the capacitor body 1, and the capacitor body 1 is embedded and plugged into the inside of the capacitor installation hole 7. In order to open the protection shell cover 3 The opening is sealed, and an engaging ring seat 8 is arranged on the rear side of the shell cover 4. The engaging ring seat 8 matches the front opening of the capacitor mounting hole 7. The shell cover 4 is engaged and installed on the opening side of the protective shell cover 3 through the engaging ring seat 8. The capacitor body 1 is engaged and installed in the closed structure formed by the protective shell cover 3 and the shell cover cover 4, which can reduce the influence of external low temperature on the work of the capacitor body 1 and effectively improve the low temperature resistance of the capacitor body 1. In order to improve the installation sealing of the shell cover cover 4, an installation support pad 10 is fixed in the rear notch of the shell cover cover 4.

[0027] As attached Figure 5 As shown, a needle post through-hole 9 is provided through the middle of the shell cover 4, and the needle post through-hole 9 is adapted to the electrode needle post 2, and the electrode needle post 2 is inserted and connected to the inner side of the needle post through-hole 9, and the electrode needle post 2 passes through the shell cover 4. In order to facilitate the installation and connection with the electrode needle post 2, sliding guide holes are provided on both sides of the support pressing plate 6, and the sliding guide holes are adapted to the electrode needle post 2. The support pressing plate 6 is slidably mounted on the upper part of the electrode needle post 2 through the sliding guide holes. In order to limit the installation of the thrust spring 5, a sliding guide hole is provided on the shell cover 4. Spring limiting grooves 11 are provided on the opposite sides of the cover 4 and the supporting pressure plate 6. The thrust spring 5 is installed in contact between the shell cover 4 and the supporting pressure plate 6. The end of the thrust spring 5 is embedded in the inner side of the spring limiting groove 11. After installation, the thrust spring 5 is used to provide elastic pre-tightening force for the supporting pressure plate 6, which can provide stable elastic tensioning support for the connection between the electrode needle column 2 of the capacitor body 1, which can prevent the capacitor body 1 from swaying when it is subjected to shaking impact, and can effectively improve the installation stability of the capacitor body 1.

[0028] Working principle or structural principle, during assembly and installation, the capacitor body 1 is inserted and installed into the capacitor installation hole 7 in the middle of the protective shell cover 3, and then the adhesive is applied to the side of the shell cover cover 4 and the needle column perforation 9, and the shell cover cover 4 is installed on the opening side of the protective shell cover 3 by inserting, and the adhesive is cured by heating to complete the assembly and installation operation of the capacitor body 1. When installing the capacitor body 1, the length of the electrode needle column 2 of the capacitor body 1 is first trimmed to reserve a suitable installation length, and then the support plate 6 is mounted on the capacitor body 1 The upper part of the electrode needle column 2 is aligned with the welding hole on the upper part of the circuit board, and the end of the electrode needle column 2 is passed through the welding hole. Then, the electrode needle column 2 is welded and fixed by soldering to complete the installation of the capacitor body 1. After installation, the thrust spring 5 is used to provide elastic pre-tightening force for the supporting pressure plate 6, which can provide stable elastic tensioning support for the connection of the electrode needle column 2 of the capacitor body 1, and can prevent the capacitor body 1 from swaying when it is subjected to shaking impact.

[0029] In summary, the capacitor adopts a shell-type protection structure, and a protective shell 3 is installed on the outside of the capacitor body 1. The protective shell 3 is made of heat-insulating material. After installation, the capacitor body 1 is in a closed inner cavity formed by the protective shell 3, which can reduce the impact of external low temperature on the work of the capacitor body 1, and can effectively improve the low-temperature resistance of the capacitor body 1. In addition, a supporting pressure plate 6 is provided at the electrode needle column 2 of the capacitor body 1. After installation, the thrust spring 5 is used to provide an elastic pre-tightening force for the supporting pressure plate 6, which can provide a stable elastic tensioning support for the connection of the electrode needle column 2 of the capacitor body 1, and can prevent the capacitor body 1 from swaying when it is subjected to shaking impact, and can effectively improve the installation stability of the capacitor body 1, which is beneficial to the improvement of the seismic resistance of the capacitor body 1.

[0030] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0031] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock-resistant and low-temperature-resistant aluminum electrolytic capacitor, comprising a capacitor body (1), characterized in that: A protective mechanism is arranged outside the capacitor body (1), the protective mechanism comprising a protective shell cover (3), a shell cover cover (4), a thrust spring (5) and a supporting pressure plate (6), and the capacitor body (1) is embedded and installed in a closed structure formed by the protective shell cover (3) and the shell cover cover (4); An electrode needle column (2) is provided at the end of the capacitor body (1), the electrode needle column (2) penetrates the shell cover (4), the support pressure plate (6) is movably mounted on the upper part of the electrode needle column (2), and the thrust spring (5) is mounted against the upper side of the support pressure plate (6).

2. The shock-resistant and low-temperature-resistant aluminum electrolytic capacitor according to claim 1, characterized in that: The number of the electrode needle posts (2) is two, and the two electrode needle posts (2) are symmetrically fixed on both sides of the front end of the capacitor body (1).

3. The shock-resistant and low-temperature-resistant aluminum electrolytic capacitor according to claim 2 is characterized in that: A capacitor mounting hole (7) is provided inside the protective shell cover (3); the capacitor mounting hole (7) is matched with the capacitor body (1); and the capacitor body (1) is inserted and engaged in the capacitor mounting hole (7).

4. The shock-resistant and low-temperature-resistant aluminum electrolytic capacitor according to claim 3 is characterized in that: The rear side of the shell cover (4) is provided with an engaging ring seat (8), the engaging ring seat (8) matches the front opening of the capacitor mounting hole (7), the shell cover (4) is engaged and mounted on the opening side of the protective shell cover (3) through the engaging ring seat (8), and a mounting support pad (10) is fixed in the rear notch of the shell cover (4).

5. The shock-resistant and low-temperature-resistant aluminum electrolytic capacitor according to claim 4, characterized in that: A needle post through-hole (9) is provided through the middle of the shell cover (4), the needle post through-hole (9) is adapted to the electrode needle post (2), and the electrode needle post (2) is inserted through the inner side of the needle post through-hole (9).

6. The shock-resistant and low-temperature-resistant aluminum electrolytic capacitor according to claim 5, characterized in that: Both sides of the support pressing plate (6) are provided with sliding guide holes, the sliding guide holes are adapted to the electrode needle column (2), and the support pressing plate (6) is slidably mounted on the upper part of the electrode needle column (2) through the sliding guide holes.

7. The shock-resistant and low-temperature-resistant aluminum electrolytic capacitor according to claim 6, characterized in that: The shell cover (4) and the supporting pressure plate (6) are both provided with spring limiting grooves (11) on the opposite sides thereof, the thrust spring (5) is installed between the shell cover (4) and the supporting pressure plate (6) in abutting manner, and the end of the thrust spring (5) is embedded in the inner side of the spring limiting groove (11).

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