CN204537854U - A kind of two-sided Half-breadth metallization safety film - Google Patents
A kind of two-sided Half-breadth metallization safety film Download PDFInfo
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- CN204537854U CN204537854U CN201520224843.XU CN201520224843U CN204537854U CN 204537854 U CN204537854 U CN 204537854U CN 201520224843 U CN201520224843 U CN 201520224843U CN 204537854 U CN204537854 U CN 204537854U
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- film
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- basement membrane
- metallized
- safety
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Abstract
The utility model discloses a kind of two-sided Half-breadth metallization safety film: have basement membrane and evaporation at the epilamellar coat of metal, the tow sides of basement membrane all have the coat of metal; Basement membrane front uses oily shield technology or band shield technology on half breadth, multiple disjunct fine pattern region is made not plate metal, thus form multiple microfuze, form metal metallized safety film, and second half breadth does not carry out shielding processing, form the metallized area of monoblock, form common metal film, between metal metallized safety film and common metal film, be provided with blank marker space; The structure of basement membrane reverse side evaporation is identical with front.Metal metallized safety film is BT safety diaphragm, and described common metal film is zinc-aluminum film.The utility model is by processing the metal metallized safety film of pairing and the structure of common metal film at basement membrane Double-side Synchronous, its production difficulty is lower, the film product matching performance produced is consistent, and capacity is also comparatively large, improves fail safe and the useful life of metallized safety film capacitor.
Description
technical field:
The utility model relates to capacitor production equipment field, particularly relates to a kind of two-sided Half-breadth metallization safety film.
background technology:
Its method for making of common film capacitor is made together with being wound on after plastic film overlap as electrode the metal formings such as aluminium.But in addition film capacitor has again a kind of autofrettage, is called metallized film (Metallized Film), its method for making be on a plastic film with the very thin metal of vacuum evaporation last layer with as electrode.So can save the thickness of electrode foil, reduce the volume of capacitor unit capacity, so film capacitor is easier to make small-sized, capacitor capacious.Such as common MKP electric capacity, be exactly the designate of metallized polypropylene film capacitor (Metailized Polypropylene Film Capacitor), MKT is then the designate of metallized polyimide ethyl ester electric capacity (Metailized Polyester).
The film that metallic film capacitor uses has poly-ethyl ester, polypropylene, Merlon etc., except convoluted, also has lamination-type.The capacitor of this kenel of metallized film has a kind of so-called ego resilience effect (Self Healing Action), when namely supposing the minute portions of electrode because electric boundary matter is fragile and cause short circuit, cause the electrode metal of short circuit peripheral portion, can because of capacitor at that time with electrostatic energy or short circuit current, and cause more large-area dissolve and evaporate and recover insulation, make capacitor recover the effect of capacitor once again.
The electric current distribution feature of capacitor is edge, thickened area to staying limit place current density to taper off trend, and namely thickened area edge current density is large, stays limit edge current density little.When there being fault near the thickened area of metalized film, because current density is large herein, soon can self-healing; And when near metalized film stay to have fault near limit time, because current density is little, cannot self-healing rapidly, the heat that electric arc produces can cause this adjacent layers dielectric heat, and dielectric strength declines, thus puncture, puncture and electric current can be made to increase, self-healing makes electric current reduce, and result electric current can not acutely increase within longer a period of time, and continuously self-healing and a large amount of bodies of puncturing generation will make capacitor case bulging, last rupture of case.Metal metallized safety film conventional is at present in the multiple disjunct fine pattern of the metal area of film design, metal level is divided into the region be connected by very narrow metal passage (microfuze) of many fritters.When excessive self-healing occurs film pocket, because microfuze region ampacity is less, and disconnect in advance, to ensure capacitor safe, play explosion-proof.But the domestic metallized safety film capacitor generally produced all adopts one deck safety diaphragm, one deck common metal film is made, and this two membranes is just matched when manufacturing capacitor temporarily, therefore often causes both characteristics not quite identical, make capacitor performance unstable, affect useful life.
utility model content:
The purpose of this utility model is just to provide a kind of two-sided Half-breadth metallization safety film, solve the domestic metallized safety film capacitor generally produced and all adopt one deck safety diaphragm, one deck common metal film is made, and this two membranes is just matched when manufacturing capacitor temporarily, therefore often cause both characteristics not quite identical, make capacitor performance unstable, affect the problem in useful life.
The technical solution adopted in the utility model is:
A kind of two-sided Half-breadth metallization safety film: have basement membrane and evaporation at the epilamellar coat of metal, the tow sides of basement membrane all have the coat of metal; Basement membrane front uses oily shield technology or band shield technology on half breadth, multiple disjunct fine pattern region is made not plate metal, thus form multiple microfuze, form metal metallized safety film, and second half breadth does not carry out shielding processing, form the metallized area of monoblock, form common metal film, between metal metallized safety film and common metal film, be provided with blank marker space; The structure of basement membrane reverse side evaporation is identical with front.
Basement membrane after processing and evaporation are obtained after epilamellar coat of metal entirety is cut two-sided metallization safety diaphragm and the common metal film of pairing, the metallized safety film capacitor capacity made with two-sided pairing film is large, and security performance is good.
Described metal metallized safety film is BT safety diaphragm, and described common metal film is zinc-aluminum film.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is by processing the metal metallized safety film of pairing and the structure of common metal film at basement membrane Double-side Synchronous, its production difficulty is lower, the film product matching performance produced is consistent, and capacity is also comparatively large, improves fail safe and the useful life of metallized safety film capacitor.
accompanying drawing illustrates:
Accompanying drawing 1 is the utility model structural representation.
embodiment:
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail:
A kind of two-sided Half-breadth metallization safety film: have basement membrane 1 and evaporation at the epilamellar coat of metal, the tow sides of basement membrane 1 all have the coat of metal; Basement membrane 1 front uses oily shield technology or band shield technology on half breadth, multiple disjunct fine pattern region is made not plate metal, thus form multiple microfuze, form metal metallized safety film 2, and second half breadth does not carry out shielding processing, form the metallized area of monoblock, form common metal film 3, between metal metallized safety film 2 and common metal film 3, be provided with blank marker space 4; The structure of basement membrane reverse side evaporation is identical with front; Basement membrane after processing and evaporation are obtained after epilamellar coat of metal entirety is cut two-sided metallization safety diaphragm and the common metal film of pairing, the metallized safety film capacitor capacity made with two-sided pairing film is large, and security performance is good; Metal metallized safety film is BT safety diaphragm, and common metal film is zinc-aluminum film.
Above-described embodiment is only preferably execution mode of the present utility model, and in addition, the utility model can also have other implementations.It should be noted that, under the prerequisite not departing from the utility model design, any apparent improvement and modification all should fall within protection range of the present utility model.
Claims (3)
1. a two-sided Half-breadth metallization safety film, is characterized in that: have basement membrane and evaporation at the epilamellar coat of metal, the tow sides of basement membrane all have the coat of metal; Basement membrane front uses oily shield technology or band shield technology on half breadth, multiple disjunct fine pattern region is made not plate metal, thus form multiple microfuze, form metal metallized safety film, and second half breadth does not carry out shielding processing, form the metallized area of monoblock, form common metal film, between metal metallized safety film and common metal film, be provided with blank marker space; The structure of basement membrane reverse side evaporation is identical with front.
2. two-sided Half-breadth metallization safety film according to claim 1, it is characterized in that: the two-sided metallization safety diaphragm and the common metal film that the basement membrane after processing and evaporation are obtained after epilamellar coat of metal entirety is cut pairing, the metallized safety film capacitor capacity made with two-sided pairing film is large, and security performance is good.
3. two-sided Half-breadth metallization safety film according to claim 1, is characterized in that: described metal metallized safety film is BT safety diaphragm, and described common metal film is zinc-aluminum film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224843.XU CN204537854U (en) | 2015-04-14 | 2015-04-14 | A kind of two-sided Half-breadth metallization safety film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224843.XU CN204537854U (en) | 2015-04-14 | 2015-04-14 | A kind of two-sided Half-breadth metallization safety film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204537854U true CN204537854U (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520224843.XU Expired - Fee Related CN204537854U (en) | 2015-04-14 | 2015-04-14 | A kind of two-sided Half-breadth metallization safety film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204537854U (en) |
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2015
- 2015-04-14 CN CN201520224843.XU patent/CN204537854U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20180414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |