Anti-vibration solid aluminum electrolytic capacitor

Abstract

The utility model relates to an anti-vibration solid aluminum electrolytic capacitor, which belongs to the field of electrolytic capacitors and comprises a laminated aluminum foil core plate, an electrolysis assembly for improving the solid aluminum electrolysis effect is arranged on the outer side of the laminated aluminum foil core plate, and an anti-vibration assembly for improving the anti-vibration protection performance is arranged on the outer side of the electrolysis assembly. The electrolysis assembly comprises a dielectric layer, a solid-state electrolysis layer, an anode pin and a cathode pin, the dielectric layer covers the outer side of the laminated aluminum foil core plate, and the solid-state electrolysis layer covers the outer side of the dielectric layer. According to the anti-vibration solid aluminum electrolytic capacitor, the electrolytic assembly is arranged, the dielectric layer covers the outer side of the laminated aluminum foil core plate, the solid electrolytic layer covers the outer side of the dielectric layer, the electrolytic assembly and the dielectric layer jointly form a solid electrolytic layer material, the electrolytic effect is achieved, the solid electrolytic layer plays a role of electrolyte, and in the working process of the capacitor, the anti-vibration solid aluminum electrolytic capacitor has a good anti-vibration effect. Ion conduction is allowed, a stable oxide layer is formed, and the anode and the cathode are isolated.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic capacitors, in particular to a vibration-proof solid aluminum electrolytic capacitor. Background Art

[0002] Solid aluminum electrolytic capacitors are safer and more environmentally friendly than traditional liquid aluminum electrolytic capacitors. Laminated solid aluminum electrolytic capacitors use a multi-core parallel stacking structure and surface mounting design. They have the characteristics of smaller size, higher reliability, longer service life and better impedance characteristics, so they are widely used in the electronics industry.

[0003] For example, a solid aluminum electrolytic capacitor with an integrated lead frame disclosed in Chinese patent announcement number (CN214123720U) includes a plurality of capacitor cores stacked in sequence and mounted on a lead frame to form a capacitor core package, and the capacitor core package is encapsulated with an organic resin to form a solid aluminum electrolytic capacitor, and the lead frame includes an anode lead frame and a cathode lead frame; the utility model adopts an integrated lead frame with a barrier structure, and the core anode and cathode are stacked in sequence on the anode tongue and cathode tongue in the integrated lead frame, respectively, to realize the lead-out of the anode and cathode, and is encapsulated with an organic resin to form a solid aluminum electrolytic capacitor, and the barrier in the lead frame can effectively prevent external water vapor from entering the core package through the gap between the encapsulation material and the lead frame, thereby improving the moisture resistance of the capacitor.

[0004] However, as in the above patent, there is still a problem of poor vibration protection effect for solid aluminum electrolytic capacitors. In the above material, the core anode and cathode are stacked in sequence on the anode tongue and cathode tongue in the integrated lead frame, and are encapsulated by organic resin to form a solid aluminum electrolytic capacitor to form an integrated structure. However, the supporting and protective performance of the structure is poor, so that vibration during transportation or use may cause internal components to loosen or be damaged, and vibration may cause changes in the internal structure of the capacitor, such as movement or deformation of the electrolyte layer, thereby increasing the ESR, which will affect the efficiency and performance of the capacitor in the circuit. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a vibration-proof solid aluminum electrolytic capacitor, which has the advantages of good vibration-proof effect, etc., and solves the problem of poor vibration-proof effect of solid aluminum electrolytic capacitors in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vibration-proof solid aluminum electrolytic capacitor, comprising a laminated aluminum foil core plate, an electrolytic component for improving the solid aluminum electrolysis effect is arranged on the outer side of the laminated aluminum foil core plate, and an anti-vibration component for increasing the anti-vibration protection performance is arranged on the outer side of the electrolytic component;

[0007] The electrolytic assembly includes a dielectric layer, a solid electrolyte layer, an anode pin and a cathode pin. The dielectric layer covers the outside of the laminated aluminum foil core plate, the solid electrolyte layer covers the outside of the dielectric layer, and the anode pin and the cathode pin are both fixed to the inside of the laminated aluminum foil core plate.

[0008] Furthermore, the dielectric layer is a solid dielectric material layer.

[0009] Furthermore, the solid electrolyte layer is an aluminum oxide layer.

[0010] Furthermore, the anti-vibration component includes a packaging layer, a shock absorbing layer, a micro damper, a protective shell and a support spring, the packaging layer is fixed to the outer side of the solid electrolyte layer, the shock absorbing layer is fixed to the outer side of the packaging layer, the micro damper is fixed to the outer side of the shock absorbing layer, the protective shell is fixed to the outer side of the micro damper, the support spring is movably mounted on the outer side of the micro damper, and both ends of the support spring are respectively fixed to the side opposite to the shock absorbing layer and the protective shell.

[0011] Furthermore, the encapsulation layer is a resin layer, and the shock absorbing layer is a rubber layer.

[0012] Furthermore, the number of the micro dampers and support springs is no less than two, and they are distributed in a ring shape outside the shock absorbing layer.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The vibration-proof solid aluminum electrolytic capacitor is provided with an electrolytic assembly, wherein the dielectric layer covers the outside of the laminated aluminum foil core plate, and the solid electrolyte layer covers the outside of the dielectric layer, which together constitute the solid electrolyte layer material and achieve the electrolysis effect. The solid electrolyte layer plays the role of an electrolyte. During the operation of the capacitor, it allows ion conduction and forms a stable oxide layer to isolate the anode and the cathode.

[0015] 2. The vibration-proof solid aluminum electrolytic capacitor increases the vibration-proof protection performance of the capacitor and reduces the influence of external vibration on the electrolytic capacitor by setting up an anti-vibration component. It adopts a multi-layer structure design to reduce the interference of mechanical shock and vibration on the capacitor element by absorbing and dispersing vibration energy. A buffer structure is formed between the packaging layer, the shock-absorbing layer and the micro damper, which can absorb the impact energy and reduce the vibration transmission to the inside of the electrolytic capacitor. The support spring plays a supporting and stabilizing role to protect the integrity of the electrolytic component. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the electrolytic component of the utility model;

[0019] Figure 4 It is a schematic diagram of the anti-vibration component of the utility model.

[0020] In the figure: 1 laminated aluminum foil core board, 2 electrolytic assembly, 21 dielectric layer, 22 solid electrolyte layer, 23 anode pin, 24 cathode pin, 3 anti-vibration assembly, 31 packaging layer, 32 shock absorbing layer, 33 micro damper, 34 protective housing, 35 support spring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-2 A vibration-proof solid aluminum electrolytic capacitor in this embodiment includes a laminated aluminum foil core plate 1, an electrolytic component 2 for improving the solid aluminum electrolysis effect is provided on the outside of the laminated aluminum foil core plate 1, and an anti-vibration component 3 for increasing the anti-vibration protection performance is provided on the outside of the electrolytic component 2.

[0023] See also Figure 3 In order to improve the electrolytic performance of the capacitor, the electrolytic component 2 in this embodiment includes a dielectric layer 21, a solid electrolyte layer 22, an anode pin 23 and a cathode pin 24. The dielectric layer 21 covers the outside of the laminated aluminum foil core board 1. The dielectric layer 21 covers the outside of the laminated aluminum foil core board 1, and the solid electrolyte layer 22 covers the outside of the dielectric layer 21. They together constitute the solid electrolyte layer 22 material to achieve the electrolysis effect. The solid electrolyte layer 22 covers the outside of the dielectric layer 21. The anode pin 23 and the cathode pin 24 are both fixed to the inside of the laminated aluminum foil core board 1. The anode pin 23 and the cathode pin 24 are used to connect the leads of the capacitor, which are usually metal wires or copper foils.

[0024] In this embodiment, the dielectric layer 21 is a solid dielectric material layer, and the solid electrolyte layer 22 is an aluminum oxide layer. The solid electrolyte layer 22 acts as an electrolyte. During the operation of the capacitor, it allows ion conduction and forms a stable oxide layer to isolate the anode and the cathode.

[0025] Aluminum oxide is a solid electrolyte layer 22 material. It has excellent electrical insulation properties and a high dielectric constant. It can form a stable oxide layer to isolate the positive and negative plates while allowing ion conduction. Aluminum oxide also has excellent heat resistance and is suitable for applications in high temperature environments.

[0026] See also Figure 4 In order to improve the anti-vibration protection effect of the capacitor, the anti-vibration component 3 in this embodiment includes a packaging layer 31, a shock absorbing layer 32, a micro damper 33, a protective shell 34 and a support spring 35. The packaging layer 31 is fixed to the outer side of the solid electrolyte layer 22, the shock absorbing layer 32 is fixed to the outer side of the packaging layer 31, the micro damper 33 is fixed to the outer side of the shock absorbing layer 32, and the protective shell 34 is fixed to the outer side of the micro damper 33. A buffer structure is formed between the packaging layer 31, the shock absorbing layer 32 and the micro damper 33, which can absorb impact energy and reduce vibration transmission to the inside of the electrolytic capacitor. The support spring 35 is movably mounted on the outer side of the micro damper 33, and the two ends of the support spring 35 are respectively fixed to the side opposite to the shock absorbing layer 32 and the protective shell 34. The support spring 35 plays a supporting and stabilizing role to protect the integrity of the electrolytic component 2.

[0027] In this embodiment, the encapsulation layer 31 is a resin layer, the shock absorbing layer 32 is a rubber layer, the number of the micro damper 33 and the support spring 35 is no less than two, and they are distributed in a ring shape on the outside of the shock absorbing layer 32. The anti-vibration component 3 increases the anti-vibration protection performance of the capacitor and reduces the impact of external vibration on the electrolytic capacitor. It adopts a multi-layer structure design to reduce the interference of mechanical shock and vibration on the capacitor elements by absorbing and dispersing vibration energy.

[0028] The working principle of the above embodiment is:

[0029] (1) When the capacitor is used to improve its electrolytic performance, the dielectric layer 21 covers the outer side of the laminated aluminum foil core plate 1, and the solid electrolyte layer 22 covers the outer side of the dielectric layer 21. Together, they constitute the solid electrolyte layer 22 material and achieve the electrolytic effect. The solid electrolyte layer 22 acts as an electrolyte. During the operation of the capacitor, it allows ion conduction and forms a stable oxide layer to isolate the anode and the cathode. Aluminum oxide is the solid electrolyte layer 22 material. It has excellent electrical insulation properties and a high dielectric constant. It can form a stable oxide layer to isolate the positive and negative plates while allowing ion conduction.

[0030] (2) When the capacitor is used to improve the anti-vibration protection effect, the anti-vibration component 3 increases the anti-vibration protection performance of the capacitor and reduces the impact of external vibration on the electrolytic capacitor. It adopts a multi-layer structure design to reduce the interference of mechanical shock and vibration on the capacitor element by absorbing and dispersing vibration energy. A buffer structure is formed between the packaging layer 31, the shock absorbing layer 32 and the micro damper 33, which can absorb the impact energy and reduce the vibration transmitted to the inside of the electrolytic capacitor. The support spring 35 plays a supporting and stabilizing role to protect the integrity of the electrolytic component 2.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A vibration-proof solid aluminum electrolytic capacitor, comprising a laminated aluminum foil core plate (1), characterized in that: An electrolytic component (2) for improving the solid aluminum electrolysis effect is provided on the outer side of the laminated aluminum foil core plate (1), and an anti-vibration component (3) for improving the anti-vibration protection performance is provided on the outer side of the electrolytic component (2); The electrolytic assembly (2) comprises a dielectric layer (21), a solid electrolyte layer (22), an anode pin (23) and a cathode pin (24); the dielectric layer (21) covers the outside of the laminated aluminum foil core plate (1); the solid electrolyte layer (22) covers the outside of the dielectric layer (21); and the anode pin (23) and the cathode pin (24) are both fixed to the inside of the laminated aluminum foil core plate (1).

2. The vibration-proof solid aluminum electrolytic capacitor according to claim 1, characterized in that: The dielectric layer (21) is a solid dielectric material layer.

3. The vibration-proof solid aluminum electrolytic capacitor according to claim 1, characterized in that: The solid electrolyte layer (22) is an aluminum oxide layer.

4. The vibration-proof solid aluminum electrolytic capacitor according to claim 1, characterized in that: The anti-vibration component (3) comprises a packaging layer (31), a shock absorbing layer (32), a micro damper (33), a protective shell (34) and a support spring (35); the packaging layer (31) is fixed to the outer side of the solid electrolyte layer (22); the shock absorbing layer (32) is fixed to the outer side of the packaging layer (31); the micro damper (33) is fixed to the outer side of the shock absorbing layer (32); the protective shell (34) is fixed to the outer side of the micro damper (33); the support spring (35) is movably mounted on the outer side of the micro damper (33); and two ends of the support spring (35) are respectively fixed to the side opposite to the shock absorbing layer (32) and the protective shell (34).

5. The vibration-proof solid aluminum electrolytic capacitor according to claim 4, characterized in that: The packaging layer (31) is a resin layer, and the shock absorbing layer (32) is a rubber layer.

6. The vibration-proof solid aluminum electrolytic capacitor according to claim 4, characterized in that: The number of the micro dampers (33) and the supporting springs (35) is no less than two, and they are distributed in an annular shape on the outside of the shock absorbing layer (32).

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