CN204441100U - A kind of membrane capacitance with safeguard construction - Google Patents
A kind of membrane capacitance with safeguard construction Download PDFInfo
- Publication number
- CN204441100U CN204441100U CN201520031014.XU CN201520031014U CN204441100U CN 204441100 U CN204441100 U CN 204441100U CN 201520031014 U CN201520031014 U CN 201520031014U CN 204441100 U CN204441100 U CN 204441100U
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- film
- sided
- capacitor
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- lead
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Abstract
The utility model discloses a kind of Novel thin film capacitor doing medium with organic plastics film, comprise flat-shaped capacitor body, this capacitor body leads to two lead-in wires, distance between two lead-in wires is 3.5-10 millimeter, the wire diameter of described lead-in wire is 0.5-0.8 millimeter, and the thickness of described capacitor body is 3-9 millimeter.The direct electric welding of radial lead of the present utility model is little in electrode, electrical loss, greatly reduces contact resistance.High density thermosetting epoxy resin protective layer improves mechanical strength and the moisture resistance of electric capacity body greatly, has high stability and reliability, and low cost of manufacture.Because film capacitor is nonpolarity, insulation impedance is very high, frequency characteristic excellence (frequency response is broad), and the feature such as dielectric loss is very little, be beneficial to be widely used in television set, radio-cassette player, electronic energy-saving lamp, starter and various electronic instrument bypass, coupling, in DC pulse circuit.
Description
Technical field
The utility model relates to a kind of membrane capacitance with safeguard construction, and specifically one have employed internal series-connection structure, employs the metallic film capacitor of safety anti-explosive film.
Background technology
The metallization film capacitor of the structure of conventional internal series-connection, use double-layer metallization film production, capacitor has high voltage bearing feature.But this capacitor can not be used for withstand large current applications, the loss of capacitor, self-induction and equivalent series resistance are also higher, and the security performance of capacitor is bad simultaneously, may occur explosion, the phenomenon such as on fire when capacitor failure.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of resistance to big current, low self-induction, low-loss, low ESR, and the capacitor that security performance is good.
For solving the problems of the technologies described above, the technical solution of the utility model is: capacitor is made up of three-layer thin-film, is reeled formed by light film, two-sided metallization film, one-sided metallic pellicular cascade.Wherein four metal layer districts of two-sided metallization film are positioned at the both sides of two-sided metallization film between two, and centre is without metal layer strip.Metal layer district on the metallized film of face is positioned at film center, and both sides are without metal layer strip.One-sided metallic film is safety anti-explosive film, and its metal layer district is made up of multiple square-shaped metal floor block, is separated therebetween by X-shaped without metal slice, and the microfuze by means of only four centers, limit is connected.
Further, the width of light film and one-sided metallic film is equal, but is less than the width of two-sided metallization film.
Further, the basement membrane of light film and one-sided metallic film is polypropylene film, and the basement membrane of two-sided metallization film is polyester film.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the utility model capacitor arrangement schematic diagram.
Fig. 2 is the structural representation of one-sided metallic thin layer in the utility model.
Embodiment
As shown in Figure 1, be the expanded view of capacitor body on the left of this figure, right side is the profile of capacitor body.Capacitor is formed by light film 1, two-sided metallization film 2, the stacked winding of one-sided metallic film 3.Two-sided metallization film 2 exists four metal layer districts 4,5,6,7, and be distributed in the both sides that 4 and 5 of homonymy, 6 and 7 are positioned at two-sided metallization thin layer 2, centre is without metal layer strip.Metal layer district 8 on one-sided metallic film 3 is positioned at film center, and both sides are without metal layer strip.
Such capacitor forms internal series-connection structure, and electrode is drawn by two-sided metallization film two ends.Play the basement membrane for light film and one-sided metallic film of condenser dielectric effect, the basement membrane of two-sided metallization film only plays a part to connect attachment four metal layer districts, itself is not the medium of capacitor.Such capacitor can obtain the characteristic of resistance to big current, low self-induction, low-loss, low ESR.
The width of light film 1 and one-sided metallic film 3 can be made equal, but be less than the width of two-sided metallization film 2.The interelectrode insulation distance of opposed polarity metal level can be increased like this, increase dieletric strength.Can form at fuse end face the annulus that caves in one heart simultaneously, when capacitor both ends of the surface spray metal, can adhesive force be increased.
For the material of the three-layer thin-film of composition capacitor, optimal selection is: the basement membrane of light film 1 and one-sided metallic film 3 is polypropylene film, and the basement membrane of two-sided metallization film 2 is polyester film.Basement membrane because of two-sided metallization film is not the medium of capacitor, and its material can be different with light film, one-sided metallic film.Because of the polypropylene film that capacitor is used in alternating current occasion light film, basement membrane that one-sided metallicization is thin can select non-polar material.But not the basement membrane of the two-sided metallization film of medium can select the polyester film of polar material, itself and metal layer adhesion better, more can bear heavy current impact.
As shown in Figure 2, the metal layer district on one-sided metallic film is made up of multiple square-shaped metal floor block 9, is separated therebetween by X-shaped without metal slice 10, and the microfuze 11 by means of only four centers, limit is connected.
After capacitor have employed above-mentioned netted safety anti-explosive film, when there is excessive self-healing in certain pocket, because microfuze region ampacity is less, and disconnect in advance, so cut off contacting of self-healing region and other parts of electric capacity, ensure that the safety of capacitor itself, serve explosion-proof effect, in using, there will not be explosion, the phenomenon such as on fire.
Claims (2)
1. there is a membrane capacitance for safeguard construction, it is characterized by: capacitor is formed by light film (1), two-sided metallization film (2), one-sided metallic film (3) stacked winding; Upper existence four the metal layer districts (4) of two-sided metallization film (2), (5), (6), (7), (4) and (5), (6) and (7) that are distributed in homonymy are positioned at the both sides of two-sided metallization film (2), and centre is without metal layer strip; Metal layer district (8) on one-sided metallic film (3) is positioned at film center, both sides are without metal layer strip, and metal level is made up of multiple square-shaped metal layer block (9), separated without metal slice (10) by X-shaped therebetween, microfuze (11) by means of only four centers, limit is connected, the width of described smooth film (1) and one-sided metallic film (3) is equal, but is less than the width of two-sided metallization film (2).
2. the membrane capacitance with safeguard construction according to claim 1, it is characterized in that: the basement membrane of light film (1) and one-sided metallic film (3) is polypropylene film, the basement membrane of two-sided metallization film (2) is polyester film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520031014.XU CN204441100U (en) | 2015-01-17 | 2015-01-17 | A kind of membrane capacitance with safeguard construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520031014.XU CN204441100U (en) | 2015-01-17 | 2015-01-17 | A kind of membrane capacitance with safeguard construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204441100U true CN204441100U (en) | 2015-07-01 |
Family
ID=53608935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520031014.XU Expired - Fee Related CN204441100U (en) | 2015-01-17 | 2015-01-17 | A kind of membrane capacitance with safeguard construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204441100U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197766A (en) * | 2019-05-06 | 2019-09-03 | 珠海格力新元电子有限公司 | Thin film capacitor |
-
2015
- 2015-01-17 CN CN201520031014.XU patent/CN204441100U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197766A (en) * | 2019-05-06 | 2019-09-03 | 珠海格力新元电子有限公司 | Thin film capacitor |
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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: 20150701 Termination date: 20160117 |
|
| EXPY | Termination of patent right or utility model |