CN203466079U

CN203466079U - Novel aluminum electrolytic capacitor shell and insulation rubber cover

Info

Publication number: CN203466079U
Application number: CN201320196455.6U
Authority: CN
Inventors: 林长春; 高亚军
Original assignee: SHENZHEN WANGXING ELECTRONIC Co Ltd
Current assignee: SHENZHEN WANGXING ELECTRONIC Co Ltd
Priority date: 2013-04-18
Filing date: 2013-04-18
Publication date: 2014-03-05
Anticipated expiration: 2023-04-18

Abstract

A novel aluminum electrolytic capacitor shell and an insulation rubber cover. The novel aluminum electrolytic capacitor shell and the insulation rubber cover include an aluminum shell body, an insulation liner, an insulation film, a capacitor core and an insulation rubber cover; the insulation liner abuts against the inner wall of the aluminum shell body; the inner wall of the insulation liner is provided with the insulation film; the insulation rubber cover is covered at an opening of the aluminum shell body in a sealed manner; and a gap is arranged between the insulation rubber cover and the capacitor core. The novel aluminum electrolytic capacitor shell and the insulation rubber cover of the utility model are advantageous in excellent insulation effect, little possibility of deformation of the aluminum shell, large-capacity capacitance, long service life and the like. According to the novel aluminum electrolytic capacitor shell and the insulation rubber cover of the utility model, the rigid insulation liner is arranged on the inner wall of the aluminum shell, and the rigid insulation liner abuts against the aluminum shell and makes the same become rigid, and therefore, the aluminum shell has little possibility of being deformed and is novel in structure, and can effectively protect the capacitor core from being damaged and prevent short-circuiting or electric leakage; and the periphery of the rigid insulation liner is higher than the capacitor core, and therefore, one gap can be formed between the capacitor core and the insulation rubber cover, and deformation and fracture of lead-out foils caused by the squeezing between the insulation rubber cover and the capacitor core can be avoided, and the possibility of corrosion of products can be decreased, and the reliability of the products can be improved.

Description

A kind of New Type Aluminum Electrolytic Capacitor housing and insulating cement lid

Technical field

The utility model relates to capacitor technology field, especially relates to a kind of New Type Aluminum Electrolytic Capacitor housing and insulating cement lid.

Background technology

Electrolytic capacitor is generally to consist of aluminum hull, capacitor core, Jiao Gai.Wherein capacitor core is to be reeled by four plies such as anode metal paper tinsel, electrolytic paper, cathodic metal paper tinsel, electrolytic papers, then processes and form through impregnation electrolyte.The cathodic metal paper tinsel of capacitor core generally adopts normal aluminium foil to make, and can not bear the impact of reverse leakage current, thereby shortened the useful life of electrolytic capacitor.At present, the development trend of aluminium electrolytic capacitor is to high pressure, large capacity and miniaturization development, improve the withstand voltage and specific volume of aluminium foil, strengthen in addition the volume of capacitor core, reduced capacitor internal space, the internal structure of now a lot of capacitors is tight, gap between capacitor core and glue lid is little, be product draw paper tinsel can be little of excessive compression because of gap between Jiao Gai and capacitor core, cause metal forming distortion or fracture, after extruding, easily cause the positive and negative short circuit between paper tinsel of drawing.

Summary of the invention

The utility model object is to provide a kind of New Type Aluminum Electrolytic Capacitor housing and insulating cement lid.The technical problems such as the existing insulation effect of prior art is poor, aluminum hull is yielding to solve, capacitance small volume, useful life are short.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of New Type Aluminum Electrolytic Capacitor housing and insulating cement lid, comprise aluminum hull body, insulation inner bag, dielectric film, capacitor core, insulating cement lid; Described insulation inner bag is close to aluminum hull inner body wall, and this insulation inner bag inwall is provided with one deck dielectric film; Described insulating cement lid is sealed on aluminum hull body openings place, between this insulating cement lid and capacitor core, is provided with a space.

As preferably, described insulation inner bag lower end closed, upper end open, the inner bag periphery height that wherein insulate is higher than the height of capacitor core, and this insulation inner bag upper end is covered and is contacted with insulating cement.

As preferably, described insulation inner bag thickness is 0.10～0.25mm, and selects the good hard material of insulation property to make.

As preferably, described dielectric film is a coating that is coated in insulation inner bag inwall, and coating layer thickness is 5～15 μ m.

The utlity model has the advantages of higher such as insulation effect is good, aluminum hull is not yielding, capacitance volume large, long service life.The utility model is by rigid insulation inner bag is contained in to aluminum hull inwall, and this rigid insulation inner bag is hard by aluminum hull support, and not yielding, novel structure, effectively protected capacitor core not to be destroyed, and prevents short circuit or electric leakage.Rigid insulation inner bag periphery is higher than capacitor core, thereby makes to form a space between capacitor core and insulating cement lid, effectively prevents that between insulating cement lid and capacitor core, extruding makes to draw paper tinsel distortion fracture, reduce product corrosion may, improved the reliability of product.

Accompanying drawing explanation

Fig. 1 is cross-sectional view of the present utility model.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.

Fig. 1 is cross-sectional view of the present utility model.As shown in Figure 1, a kind of New Type Aluminum Electrolytic Capacitor housing and insulating cement lid, comprise aluminum hull body 1, insulation inner bag 2, dielectric film 8, capacitor core 7, insulating cement lid 4; Described insulation inner bag 2 is close to aluminum hull body 1 inwall, and these insulation inner bag 2 inwalls are provided with one deck dielectric film 8, and this dielectric film 8 is coatings that are coated in insulation inner bag 2 inwalls, and coating layer thickness is 5～15 μ m.Described insulating cement lid 4 is sealed on aluminum hull body 1 opening part, between this insulating cement lid 4 and capacitor core 7, is provided with a space 5.

Insulation inner bag 2 thickness are 0.10～0.25mm, and select the good hard material of insulation property to make, these insulation inner bag 2 lower end closed, upper end open, the height of inner bag 2 periphery height higher than capacitor core 7 wherein insulate, these insulation inner bag 2 upper ends contact with insulating cement lid 4, and capacitor core 7 is also connected with two lead-out wires 3,6

The utility model is by rigid insulation inner bag 2 being contained in to aluminum hull body 1 inwall, and this rigid insulation inner bag 2 is hard by 1 support of aluminum hull body, and not yielding, novel structure, effectively protected capacitor core 7 not to be destroyed, and prevents short circuit or electric leakage.Rigid insulation inner bag 2 peripheries are higher than capacitor core 7, thereby make to form a space between capacitor core 7 and insulating cement lid 4, effectively prevent that between insulating cement lid 4 and capacitor core 7, extruding makes to draw paper tinsel distortion fracture, reduce the corrosion possibility of product, improved the reliability of product.

The foregoing is only preferred embodiment of the present utility model; be not sufficient to limit the technical solution of the utility model; to one skilled in the art; increased and decreased according to the above description, replacement, conversion or improved technical scheme, should all belong to the protection range of the utility model claims.

Claims

1. a New Type Aluminum Electrolytic Capacitor housing and insulating cement lid, comprise aluminum hull body, insulation inner bag, dielectric film, capacitor core, insulating cement lid; It is characterized in that, described insulation inner bag is close to aluminum hull inner body wall, and this insulation inner bag inwall is provided with one deck dielectric film; Described insulating cement lid is sealed on aluminum hull body openings place, between this insulating cement lid and capacitor core, is provided with a space.

2. a kind of New Type Aluminum Electrolytic Capacitor housing according to claim 1 and insulating cement cover, it is characterized in that, described insulation inner bag lower end closed, upper end open, the inner bag periphery height that wherein insulate is higher than the height of capacitor core, and this insulation inner bag upper end is covered and is contacted with insulating cement.

3. a kind of New Type Aluminum Electrolytic Capacitor housing according to claim 2 and insulating cement lid, is characterized in that, described insulation inner bag thickness is 0.10～0.25mm.

4. a kind of New Type Aluminum Electrolytic Capacitor housing according to claim 1 and insulating cement lid, is characterized in that, described dielectric film is a coating that is coated in insulation inner bag inwall, and this coating layer thickness is 5～15 μ m.