CN2689424Y

CN2689424Y - Medium and high frequency metallized organic thin-membrane capacitors

Info

Publication number: CN2689424Y
Application number: CN 200420044255
Authority: CN
Inventors: 孔星; 尤枝辉
Original assignee: Foshan Shunde Cg Electronic Industry Co ltd
Current assignee: Foshan Shunde Cg Electronic Industry Co ltd
Priority date: 2004-04-02
Filing date: 2004-04-02
Publication date: 2005-03-30
Anticipated expiration: 2014-04-02

Abstract

The utility model relates to a medium and high frequency metallic organic film capacitor which is characterized in that a capacitor core comprises a polar plate of the capacitor, and an organic film medium. A metal plating layer plated by vapor on the surface of the organic film medium is arranged into the polar plate of the capacitor. Two end faces of the capacitor core are provided with metal spraying layers; down=n-leads are connected with the metal spraying layers. The utility model has the advantages that the capacitor simplifies material processing and reduces manufacturing cost and is good for the generalization and application of the product; the metal plating layers are thin; the capacitor has excellent self-healing performance and favorable hot-shaping effect; the stabilization of the product is enhanced. The utility model only uses two metallic organic films, reduces the volume of the product, and satisfies the requirements of modern electronic devices.

Description

Middle and high frequency metallized organic film capacitor

Technical field

The utility model relates to middle and high frequency capacitor, especially relates to a kind of middle and high frequency metallized organic film capacitor.

Background technology

At present, existing middle and high frequency capacitor has two kinds of structures, referring to Fig. 1, Fig. 2, a kind of be to be electrode with aluminum metallic foil (6), the compound medium of doing of organic film (7) or paper and organic film forms, this constructed products does not have self-healing performance, when existing in the medium when sheltering, product is sheltered and a little is occurred puncture easily at work, when sheltering when puncturing, can't recover normal, thereby cause product failure, so this capacitor reliability is relatively poor; Another kind is to have the metallized organic film (8) of the coat of metal to make electrode with the two sides evaporation, and organic film (7) is made medium and formed, and this constructed products has self-healing property, and performance is relatively stable, but the materials processing cost is high and volume is also bigger.Though thereby these two kinds of constructed products can both bear higher pulse current, can use under higher frequency, but the volume of product are all bigger, the cost height is difficult to satisfy present electronic equipment small size, high-performance, requirement cheaply.

Chinese patent by retrieval, the patent application of relevant capacitor has 1259,891 of applications for a patent for invention, 330 of utility models, 38 of design patents.

Chinese patent 98225326.5 discloses a kind of capacitor constructions, refers in particular to a kind of capacitor that is used for microwave oven, and it comprises shell, cap, leading-out terminal, draws lead, fuse; Wherein, fuse is made medium with polypropylene film, has the metalized film of metal level to make electrode with the two sides evaporation, through volume Zhang Ercheng.Though the capacitor of this structure has self-healing property, but there is following shortcoming in it: (1) owing to the metalized film of electrode with employing two sides evaporation metal, its cost of manufacture is too high and have bulky shortcoming too, is unfavorable for applying of product.(2) generally all higher (1800～2100VAC), so high voltage is applied on two pole plates microwave oven, and ionization appears in fuse edge and inside easily, causes the properties of product instability, reduces product useful life with condenser voltage.

Result for retrieval shows: do not have to put down in writing the patent application of or close technical scheme identical with the utility model patent application in the Chinese patent.

Summary of the invention

For the volume of the product that overcomes existing middle and high frequency capacitor bigger, the shortcoming that cost is high, the utility model provide a kind of can wanting to use under the middle and high frequency occasion, and volume is again little, cost is low again, simple in structure, reliable middle and high frequency metallic film capacitor.

The technical scheme that its technical problem that solves the utility model adopts realizes in the following way:

In a kind of; the electric metal organic film condenser; comprise exit; capacitor body; the outsourcing protective layer; or housing; inserts; its design feature is; the capacitance fuse comprises capacitor plate and organic film medium; capacitor plate is the coat of metal of evaporation on the organic film dielectric surface; the coat of metal of evaporation is set to capacitor plate on the organic film dielectric surface, the coat of metal of metallized organic film satisfy in; high-frequency electric field descends, and the impact of big electric current has been reality; because the organic film of relative aluminium foil of the coat of metal or double-sided metalization is thinner; thereby the volume of product is much smaller, and the capacitor body both ends of the surface are provided with gilding layer, and exit is connected with gilding layer; then fuse is packed into and pour into the inserts sealing in the housing again or directly fuse is wrapped up with insulating material, safer during use.

Described organic film includes but not limited to polypropylene film, and thickness is between 0.008mm to 0.03mm.

The described coat of metal includes but not limited to aluminium, silver, zinc or allumen, and thickness is between 0.05 μ m to 0.5 μ m.

Described housing is a plastic casing.

Described potting compound includes but not limited to epoxy resin.

Described outsourcing insulating material includes but not limited to epoxy resin.

Good effect of the present utility model is:

1), simplified materials processing, reduced cost of manufacture, help applying of product.

2), the coat of metal is thinner, the self-healing performance excellence of capacitor, thermal finalization is effective, has improved the stability of product.

3), only with two metallized organic films, dwindled small product size, can satisfy the demand of modern electronic equipment.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1, Fig. 2 are existing middle and high frequency capacitor arrangement schematic diagrames.

Fig. 3, Fig. 4 are the utility model capacitor overall structure figure.

Fig. 5 is the utility model capacitor body structural representation.

Fig. 6 is the utility model metallized film structural representation.

Among the figure: the 1st, capacitor body, the 11st, metallized film, the 111st, the coat of metal, the 112nd, organic film; the 12nd, gilding layer, the 2nd, exit, the 3rd, outsourcing protective layer, the 4th, shell; the 5th, inserts, the 6th, aluminium foil, the 7th, the organic film of prior art, the 8th, double-sided metal organic film.

Embodiment

Referring to Fig. 3; Fig. 4; Fig. 5; Fig. 6; in a kind of; the electric metal organic film condenser; comprise exit (2); capacitor body (1); a kind of mode is to be provided with outsourcing protective layer (3); another kind of mode is that housing (4) is set; between housing (4) and the fuse (1) inserts (5) is housed; capacitance fuse (1) comprises capacitor plate and organic film (112) medium; capacitor plate is the coat of metal (111) of evaporation on organic film (112) dielectric surface; to on organic film (112) dielectric surface, be set to capacitor plate by the coat of metal (111) of evaporation; organic film (112) adopts polypropylene film; thickness is 0.01mm; the coat of metal (111) of metallized organic film (11) satisfy in; high-frequency electric field descends; the impact of big electric current has been reality; the coat of metal (111) adopts zinc; aluminium alloy; thickness is 0.2 μ m; because the organic film (8) of relative aluminium foil (6) of the coat of metal (112) or double-sided metalization is thinner; thereby the volume of product is much smaller; capacitor body (1) both ends of the surface are provided with gilding layer (12); exit (2) is connected with gilding layer (12); then fuse (1) is packed into and pour into inserts (5) sealing in the housing (4) again or directly use insulating material that fuse (1) is wrapped up; inserts (5) adopts epoxy resin; housing (4) adopts plastic casing, and is safer during use.

The above specific embodiment only is preferred embodiment of the present utility model, and the impartial design variation of being done according to the utility model claim all should be technology of the present utility model and contains such as.

Claims

1, middle and high frequency metallized organic film capacitor; comprise exit; capacitor body; the peripheral hardware protective layer; or housing, inserts, it is characterized in that: the capacitance fuse comprises capacitor plate and organic film medium, and the coat of metal of evaporation is set to capacitor plate on the organic film dielectric surface; the capacitor body both ends of the surface are provided with gilding layer, and exit is connected with gilding layer.

2, a kind of middle and high frequency metallized organic film capacitor according to claim 1, it is characterized in that: described organic film includes but not limited to polypropylene film, and thickness is between 0.008mm to 0.03mm.

3, a kind of middle and high frequency metallized organic film capacitor according to claim 1 and 2, it is characterized in that: the described coat of metal includes but not limited to aluminium, silver, zinc or allumen, thickness is between 0.05 μ m to 0.5 μ m.