CN2708467Y - A metallized safety film capacitor - Google Patents
A metallized safety film capacitor Download PDFInfo
- Publication number
- CN2708467Y CN2708467Y CN 200420046982 CN200420046982U CN2708467Y CN 2708467 Y CN2708467 Y CN 2708467Y CN 200420046982 CN200420046982 CN 200420046982 CN 200420046982 U CN200420046982 U CN 200420046982U CN 2708467 Y CN2708467 Y CN 2708467Y
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- capacitor
- film
- safety film
- layer
- metal
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Abstract
The utility model relates to a new metallized safety film capacitor. The utility model is characterized in that the metallized safety film capacitor is made by lap winding and using a layer of metallic safety film and a layer of metallic film membrane; the edge of the metallic safety film is provided with a blank remaining edge. The positive effects of the utility model are that a layer of metallic safety film is changed into a metallic film at present; so, the case of capacity falling off is largely improved when the capacitor occurs to self-cure; simultaneously, because the capacitor is made by the lap winding of two layers of metallic film, when one of the films is disabled, the entire capacitor is disabled; using one layer of metallic safety film similarly takes the action of explosion prevention.
Description
Technical field
The utility model relates to a kind of capacitor, especially relates to a kind of new type of metal safety film capacitor.
Background technology
The metal metallized safety film capacitor is the widely used a kind of discrete electronic components of industry such as electrical equipment, information electronics, microelectronics, its manufacture method is that metallized film coating is made the network structure that is divided into many small sizes unit by thin narrow space bar, link to each other by narrow shape plated film contact between the close small size unit, again double-layer metallization film stack coiled electric capacity.Above-mentioned metal metallized safety film capacitor, when continuing by overload current, narrow shape plated film contact between the small size unit that links to each other blows just as fuse is rapid, make capacitor become open failure at short notice and can short circuit do not blow on firely, this be a metal metallized safety film capacitor explosion-proof principle.Yet metallic film capacitor has the characteristic of self-healing during by transient overload current, capacitance can seriously not descended, but the metal metallized safety film capacitor plays the shortcoming that the characteristic of explosion-proof becomes self-healing property: when by momentary excess current, near self-healing point contact just is blown, the small size unit will break from capacitor, makes serious decline of capacity and has influenced the electric property of metal metallized safety film capacitor.
Summary of the invention
The utility model is in view of the defective of existing metal metallized safety film capacitor, and purpose provides a kind of new type of metal safety film capacitor, and this new type of metal safety film capacitor can not only be explosion-proof and be had a good self-healing property.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of new type of metal safety film capacitor, its design feature is: use layer of metal safety film and layer of metal film stack around forming, the edge of described metal metallized safety film is provided with the white edge of leaving a blank.
Good effect of the present utility model is: now change the layer of metal safety film into metallized film, the situation that capacitance descends during capacitor generation self-healing will be improved greatly.Simultaneously because of capacitor by layer of metal safety film and layer of metal film stack around forming, the whole capacitor device will lose efficacy when wherein a skim loses efficacy, and used the layer of metal safety film to play explosion-proof too.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model example structure schematic diagram.
Fig. 2 is the membrane structure schematic diagram of the utility model wound capacitor fuse.
Fig. 3 is the utility model capacitor body winding-structure schematic diagram.
Capacity decline schematic diagram when Fig. 4 is the utility model self-healing.
Fig. 5 is a capacity decline schematic diagram when having the self-healing of metal metallized safety film capacitor now.
Figure number and title contrast
1 lead-in wire
2 housings
3 capacitor bodies
31 metallized films
32 metal metallized safety films
34 gilding layers
4 fillers
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of new type of metal safety film capacitor.Comprise lead-in wire 1, capacitor body 3 and housing 2, inserts 4; Capacitor body 3 is reeled by layer of metal safety film 32 (hereinafter to be referred as film 32) and layer of metal film 31 (hereinafter to be referred as film 31) and is formed; The pole plate of capacitor is two lip-deep coats of metal of film 32 and film 31, is provided with gilding layer 34 in the two sides of capacitor body 3, and gilding layer 34 connects the pole plate and the lead-in wire 2 of capacitor; The outer surface of capacitor body 3 is provided with housing 2, and housing 2 adopts plastic production, inserts inserts 4 between capacitor body 3 and the housing 2, and inserts 4 is an epoxy resin.Its process that self-healing takes place is as follows: consult Fig. 4, when self-healing point, lost efficacy after the blowout of the small size unit ABCD of metal metallized safety film 32 when locating at " F ", metallized film 31 is located to lose efficacy among a small circle at self-healing point " F ", and obvious, total inefficacy area is S
ABCDConsult Fig. 5, Fig. 5 is a capacity decline schematic diagram when having the self-healing of metal metallized safety film capacitor now, when self-healing point at " F " when locating, lost efficacy after the blowout of the small size unit A of metal metallized safety film 32, B, C, D, and lost efficacy after the blowout of the small size unit a of another metal metallized safety film 32, b, c, d, obviously total inefficacy area is greater than S
ABCDThis shows, a kind of new type of metal safety film capacitor provided by the utility model, the situation that capacitance descends when capacitor generation self-healing will be improved greatly.Formed by layer of metal safety film and the very thin film lap wound of layer of metalization because of capacitor simultaneously, the whole capacitor device will lose efficacy when wherein a skim loses efficacy, and used the layer of metal safety film to play explosion-proof too.
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 (2)
1. a new type of metal safety film capacitor is characterized in that: use layer of metal safety film and layer of metal film stack around forming.
2. a kind of new type of metal safety film capacitor according to claim 1, it is characterized in that: the edge of described metal metallized safety film is provided with the white edge of leaving a blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420046982 CN2708467Y (en) | 2004-06-16 | 2004-06-16 | A metallized safety film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420046982 CN2708467Y (en) | 2004-06-16 | 2004-06-16 | A metallized safety film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708467Y true CN2708467Y (en) | 2005-07-06 |
Family
ID=34851257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420046982 Expired - Fee Related CN2708467Y (en) | 2004-06-16 | 2004-06-16 | A metallized safety film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708467Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578749A (en) * | 2013-10-15 | 2014-02-12 | 铜陵其利电子材料有限公司 | Half-breadth metallization safety film |
| CN106876139A (en) * | 2017-04-13 | 2017-06-20 | 哈尔滨理工大学 | A kind of novel metal membrane capacitance |
| CN111448631A (en) * | 2018-01-18 | 2020-07-24 | 松下知识产权经营株式会社 | Thin film capacitor |
-
2004
- 2004-06-16 CN CN 200420046982 patent/CN2708467Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578749A (en) * | 2013-10-15 | 2014-02-12 | 铜陵其利电子材料有限公司 | Half-breadth metallization safety film |
| CN106876139A (en) * | 2017-04-13 | 2017-06-20 | 哈尔滨理工大学 | A kind of novel metal membrane capacitance |
| CN111448631A (en) * | 2018-01-18 | 2020-07-24 | 松下知识产权经营株式会社 | Thin film capacitor |
| CN111448631B (en) * | 2018-01-18 | 2021-12-03 | 松下知识产权经营株式会社 | Thin film capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050706 |