CN204537847U - The two-sided metallized film of a kind of mining capacitor - Google Patents
The two-sided metallized film of a kind of mining capacitor Download PDFInfo
- Publication number
- CN204537847U CN204537847U CN201520224810.5U CN201520224810U CN204537847U CN 204537847 U CN204537847 U CN 204537847U CN 201520224810 U CN201520224810 U CN 201520224810U CN 204537847 U CN204537847 U CN 204537847U
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- evaporation
- coat
- basement membrane
- capacitor
- zinc
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Abstract
The utility model discloses the two-sided metallized film of a kind of mining capacitor: there is basement membrane and evaporation at the epilamellar coat of metal, the equal evaporation in upper and lower surface of basement membrane has zinc coating, described evaporation zinc coating progressive additive from left to right, the blank that thinner one end has one fixed width stays limit, above the zinc coat of basement membrane upper surface, evaporation has upper aluminium coat, and below the zinc coat of basement membrane lower surface, evaporation has lower aluminium coat; The thickness of lower aluminium coat successively decreases from right to left successively.The utility model passes through at the two-sided plating double-metal layer of basement membrane, and be provided with thickened area and the structure staying border area, effectively overcome the contradiction that common metal film ampacity and self-healing property cannot be taken into account simultaneously, its self-healing property is good, electric conductivity is good, capacity attenuation is little, the larger fail safe that improve capacitor and useful life.
Description
technical field:
The utility model relates to capacitor production equipment field, particularly relates to the two-sided metallized film of a kind of mining capacitor.
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.And the heavy current capacitor used on coal mine equipment, higher for the performance requirement used continuously, once break down probably cause stopping work safety inspection comprehensively, bring larger economic loss to enterprise.
utility model content:
The purpose of this utility model is just to provide the two-sided metallized film of a kind of mining capacitor, solve the heavy current capacitor used on coal mine equipment, its explosion-proof performance requires higher, once there is bursting accident probably cause safety inspection of stopping work comprehensively, bring the problem of larger economic loss to enterprise.
The technical solution adopted in the utility model is:
The two-sided metallized film of a kind of mining capacitor: there is basement membrane and evaporation at the epilamellar coat of metal, the equal evaporation in upper and lower surface of basement membrane has zinc coating, described evaporation zinc coating progressive additive from left to right, the blank that thinner one end has one fixed width stays limit, above the zinc coat of basement membrane upper surface, evaporation has upper aluminium coat, and below the zinc coat of basement membrane lower surface, evaporation has lower aluminium coat.
The thickness of described lower aluminium coat successively decreases from right to left successively.
Compared with prior art, the beneficial effects of the utility model are:
The utility model passes through at the two-sided plating double-metal layer of basement membrane, and be provided with thickened area and the structure staying border area, effectively overcome the contradiction that common metal film ampacity and self-healing property cannot be taken into account simultaneously, its self-healing property is good, electric conductivity is good, capacity attenuation is little, the larger fail safe that improve capacitor and useful life.
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:
The two-sided metallized film of a kind of mining capacitor: there is basement membrane 1 and the coat of metal of evaporation on basement membrane 1, the equal evaporation in upper and lower surface of basement membrane has zinc coating 2,3, described evaporation zinc coating 2,3 progressive additive from left to right, the blank that thinner one end has one fixed width stays limit 4, above the zinc coat 2 of basement membrane 1 upper surface, evaporation has upper aluminium coat 5, and below the zinc coat 3 of basement membrane 1 lower surface, evaporation has lower aluminium coat 6; The thickness of lower aluminium coat 6 successively decreases from right to left successively.
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 (2)
1. the two-sided metallized film of mining capacitor, it is characterized in that: there is basement membrane and evaporation at the epilamellar coat of metal, the equal evaporation in upper and lower surface of basement membrane has zinc coating, described evaporation zinc coating progressive additive from left to right, the blank that thinner one end has one fixed width stays limit, above the zinc coat of basement membrane upper surface, evaporation has upper aluminium coat, and below the zinc coat of basement membrane lower surface, evaporation has lower aluminium coat.
2. the two-sided metallized film of mining capacitor according to claim 1, is characterized in that: the thickness of described lower aluminium coat successively decreases from right to left successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224810.5U CN204537847U (en) | 2015-04-14 | 2015-04-14 | The two-sided metallized film of a kind of mining capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224810.5U CN204537847U (en) | 2015-04-14 | 2015-04-14 | The two-sided metallized film of a kind of mining capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204537847U true CN204537847U (en) | 2015-08-05 |
Family
ID=53751819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520224810.5U Expired - Fee Related CN204537847U (en) | 2015-04-14 | 2015-04-14 | The two-sided metallized film of a kind of mining capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204537847U (en) |
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2015
- 2015-04-14 CN CN201520224810.5U patent/CN204537847U/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 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |