CN203456292U - High-frequency pulse thin-film capacitor - Google Patents
High-frequency pulse thin-film capacitor Download PDFInfo
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- CN203456292U CN203456292U CN201320615336.XU CN201320615336U CN203456292U CN 203456292 U CN203456292 U CN 203456292U CN 201320615336 U CN201320615336 U CN 201320615336U CN 203456292 U CN203456292 U CN 203456292U
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Abstract
The utility model discloses a high-frequency pulse thin-film capacitor. The high-frequency pulse thin-film capacitor comprises a capacitor core, metal spraying layers sprayed on the two tail ends of the capacitor core, electrode lead wires welded with the metal spraying layers, an internal wrapping epoxy resin layer wrapping the whole capacitor core, and an external wrapping flame-retardant epoxy powder layer wrapping the internal wrapping epoxy resin layer. The capacitor core comprises a first dielectric layer; a second dielectric layer; a first metal foil layer and a first double-face metalized thin film layer which are laminated on the first dielectric layer side by side; and a second metal foil layer and a second double-face metalized thin film layer which are laminated between the first dielectric layer and the second dielectric layer side by side. The first metal foil layer and the first double-face metalized thin film layer are arranged at an interval and are connected in series mutually. The second metal foil layer and the second double-face metalized thin film layer are arranged at an interval and are connected in series mutually. The high-frequency pulse thin-film capacitor is applicable to AC high-frequency large-pulse occasions and is good in stability and long in service life.
Description
Technical field
The utility model relates to a kind of capacitor, is specifically related to a kind of high-frequency impulse film capacitor.
Background technology
Along with scientific and technical development, also more and more higher to the structure of capacitor and performance requirement.Film capacitor is a kind of in capacitor, and that its key property is is nonpolarity, insulation impedance is very high, frequency characteristic is excellent, and dielectric loss is very little, so film capacitor is used on analog circuit in a large number.
The version that film capacitor is conventional is to adopt metallized film to make, common metal polarizing electrode film capacitor is mainly to adopt the coat of metal on dielectric film single or double as electrode, its withstanding current capability (dV/dt value) is all very low, be restricted useful life, easy ageing failure, this has limited it in the application of high frequency, high pressure, pulse high current workplace (as high frequency switch power etc.).
Utility model content
For the deficiencies in the prior art, the utility model proposes a kind of high-frequency impulse film capacitor, applicable to exchanging the large pulse occasion of high frequency, and have good stability, long service life.
In order to achieve the above object, the technical scheme that the utility model adopts is as follows:
High-frequency impulse film capacitor, comprise capacitor core, be sprayed on the gilding layer of two ends of this capacitor core, with the contact conductor of gilding layer welding, the outsourcing flame retardant epoxy powder bed of the interior bag epoxy resin layer of coated whole capacitor core and coated this interior bag epoxy resin layer, described capacitor core comprise first medium layer, second medium layer, be side by side layered in the first metal foil layer and the first double-sided metal thin layer on this first medium layer and be layered in side by side first medium layer and second medium layer between the second metal foil layer and the second double-sided metal thin layer; Described the first metal foil layer and the first double-sided metal thin layer are distributed in distance and are mutually connected in series, and described the second metal foil layer and the second double-sided metal thin layer are distributed in distance and are mutually connected in series.
Preferably, described the first metal foil layer and the first double-sided metal thin layer put in order contrary with putting in order of the second metal foil layer and the second double-sided metal thin layer.
Preferably, the two ends of first medium layer and second medium layer are corresponding concordant respectively; One end of corresponding the first double-sided metal thin layer of described first medium layer extends outward this first double-sided metal thin layer; One end of corresponding the second double-sided metal thin layer of described second medium layer extends outward this second double-sided metal thin layer.
Preferably, the thickness of described the first double-sided metal thin layer and the second double-sided metal thin layer is 5 μ m.
Preferably, the scope of the sheet resistance value of described the first double-sided metal thin layer and the second double-sided metal thin layer is 1.5 ~ 2 Ω.
Preferably, the two ends of first medium layer and second medium layer are corresponding concordant respectively; Described the first metal foil layer extends outward first medium layer away from one end of the first double-sided metal thin layer, and described the second metal foil layer extends outward second medium layer away from one end of the second double-sided metal thin layer.
Preferably, the thickness of described the first metal foil layer and the second metal foil layer is 5 μ m.
Preferably, described the first metal foil layer and the second metal foil layer are metal aluminum foil layer.
Preferably, described first medium layer and second medium layer are layer of polypropylene foil.
Compared with prior art, the beneficial effects of the utility model are as follows:
1, capacitor core utilization series connection voltage divider principle can make product be applicable to higher voltage and pulse occasion, effectively reduces the field intensity at pole plate edge, guarantees the stability of capacitor.
2, adopt metal aluminum foil to do extraction electrode, can guarantee that two ends of capacitor core and the contact resistance of gilding layer are enough little, reduce the DF value of product, and can pass through larger impulse current, to be applicable to the workplace of higher frequency.
3, the double-sided metal film that adopts double-sided metal plating process, utilizes shunting principle in parallel, while making large electric current through this double-sided metal coating, shunts, and simultaneously by the design of low square resistance, makes the current ratio one side coat of metal of flowing through improve 2 times.
4, adopt polypropylene film as dielectric material, can resist the too high puzzlement that causes dielectric material dielectric strength to decline of ambient temperature, further strengthen product stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment of the utility model high-frequency impulse film capacitor;
Fig. 2 is the generalized section of capacitor core in Fig. 1.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further, so that clearer, understand the utility model technological thought required for protection.
Refer to Fig. 1 and Fig. 2, the utility model relates to a kind of high-frequency impulse film capacitor, and its preferred embodiments comprises capacitor core 10, gilding layer 20, contact conductor 30, interior bag epoxy resin layer 40, outsourcing flame retardant epoxy powder bed 50.
Wherein, gilding layer 20 is sprayed on two ends of capacitor core 10, and contact conductor 30 weldings are on gilding layer 20.Interior bag epoxy resin layer 40 is for coated whole capacitor core 10, and outsourcing flame retardant epoxy powder bed 50 is coated on the outside of this interior bag epoxy resin layer 40.
Wherein, the two ends of first medium layer 200 and second medium layer 400 are corresponding concordant respectively.This first medium layer 200 and second medium layer 400 preferably adopt layer of polypropylene foil, adopt megathermal polypropylene film as dielectric material, can resist the too high puzzlement that causes dielectric material dielectric strength to decline of ambient temperature, strengthen product stability.In some other embodiment, also can adopt polyester-based rete etc.
The first metal foil layer 110 and the first double-sided metal thin layer 120 are layered on this first medium layer 200 side by side, and this first metal foil layer 110 and the first double-sided metal thin layer 120 is distributed in distance and mutually serial connection.
The second metal foil layer 320 and the second double-sided metal thin layer 310 are layered between first medium layer 200 and second medium layer 400 side by side, and this second metal foil layer 320 and the second double-sided metal thin layer 310 is distributed in distance and mutually serial connection.
In the present embodiment, the first metal foil layer 110 and the first double-sided metal thin layer 120 put in order contrary with putting in order of the second metal foil layer 320 and the second double-sided metal thin layer 310.As shown in Figure 2, the first metal foil layer 110 is positioned at the left side of first medium layer 200, and the second metal foil layer 320 is positioned at the right side of first medium layer 200.
Capacitor core utilization series connection voltage divider principle of the present utility model can make product be applicable to higher voltage and pulse occasion, effectively reduces the field intensity at pole plate edge, guarantees the stability of capacitor.
For the first double-sided metal thin layer 120 and the second double-sided metal thin layer 310, in the present embodiment, one end of corresponding the first double-sided metal thin layer 120 of first medium layer 200 extends outward this first double-sided metal thin layer 120; One end of corresponding the second double-sided metal thin layer 310 of second medium layer 400 extends outward this second double-sided metal thin layer 310.In addition, the thickness of the first double-sided metal thin layer 120 and the second double-sided metal thin layer 310 is 5 μ m, and the scope of sheet resistance value is 1.5 ~ 2 Ω.The utility model adopts the double-sided metal film of double-sided metal plating process, utilizes shunting principle in parallel, while making large electric current through this double-sided metal coating, shunts, and simultaneously by the design of low square resistance, makes the current ratio one side coat of metal of flowing through improve 2 times.
For the first metal foil layer 110 and the second metal foil layer 320, in the present embodiment, they all adopt metal aluminum foil layer, and thickness is 5 μ m; And the first metal foil layer 110 extends outward first medium layer 200, the second metal foil layer 320 away from one end of the first double-sided metal thin layer 120 and extends outward second medium layer 400 away from one end of the second double-sided metal thin layer 310.The utility model adopts metal aluminum foil to do extraction electrode, can guarantee that two ends of capacitor core and the contact resistance of gilding layer are enough little, reduces the DF value of product, and can pass through larger impulse current, to be applicable to the workplace of higher frequency.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection range of the utility model claim within.
Claims (9)
1. high-frequency impulse film capacitor, comprise capacitor core, be sprayed on the gilding layer of two ends of this capacitor core, contact conductor with gilding layer welding, the outsourcing flame retardant epoxy powder bed of the interior bag epoxy resin layer of coated whole capacitor core and coated this interior bag epoxy resin layer, it is characterized in that: described capacitor core comprises first medium layer, second medium layer, be layered in side by side the first metal foil layer and the first double-sided metal thin layer on this first medium layer and be layered in side by side first medium layer and second medium layer between the second metal foil layer and the second double-sided metal thin layer, described the first metal foil layer and the first double-sided metal thin layer are distributed in distance and are mutually connected in series, and described the second metal foil layer and the second double-sided metal thin layer are distributed in distance and are mutually connected in series.
2. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: putting in order of described the first metal foil layer and the first double-sided metal thin layer is contrary with putting in order of the second metal foil layer and the second double-sided metal thin layer.
3. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: the two ends of first medium layer and second medium layer are corresponding concordant respectively; One end of corresponding the first double-sided metal thin layer of described first medium layer extends outward this first double-sided metal thin layer; One end of corresponding the second double-sided metal thin layer of described second medium layer extends outward this second double-sided metal thin layer.
4. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: the thickness of described the first double-sided metal thin layer and the second double-sided metal thin layer is 5 μ m.
5. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: the scope of the sheet resistance value of described the first double-sided metal thin layer and the second double-sided metal thin layer is 1.5 ~ 2 Ω.
6. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: the two ends of first medium layer and second medium layer are corresponding concordant respectively; Described the first metal foil layer extends outward first medium layer away from one end of the first double-sided metal thin layer, and described the second metal foil layer extends outward second medium layer away from one end of the second double-sided metal thin layer.
7. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: the thickness of described the first metal foil layer and the second metal foil layer is 5 μ m.
8. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: described the first metal foil layer and the second metal foil layer are metal aluminum foil layer.
9. high-frequency impulse film capacitor as claimed in claim 1, is characterized in that: described first medium layer and second medium layer are layer of polypropylene foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320615336.XU CN203456292U (en) | 2013-09-30 | 2013-09-30 | High-frequency pulse thin-film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320615336.XU CN203456292U (en) | 2013-09-30 | 2013-09-30 | High-frequency pulse thin-film capacitor |
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| Publication Number | Publication Date |
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| CN203456292U true CN203456292U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320615336.XU Expired - Fee Related CN203456292U (en) | 2013-09-30 | 2013-09-30 | High-frequency pulse thin-film capacitor |
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| CN (1) | CN203456292U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655128A (en) * | 2016-04-11 | 2016-06-08 | 郑州航空工业管理学院 | Ultrathin and high-temperature-resistant metallized polypropylene film capacitor |
| CN106504896A (en) * | 2016-11-16 | 2017-03-15 | 安徽飞达电气科技有限公司 | A kind of anti-interference capacitance-resistance module of metallized polypropylene film |
-
2013
- 2013-09-30 CN CN201320615336.XU patent/CN203456292U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655128A (en) * | 2016-04-11 | 2016-06-08 | 郑州航空工业管理学院 | Ultrathin and high-temperature-resistant metallized polypropylene film capacitor |
| CN105655128B (en) * | 2016-04-11 | 2018-08-21 | 郑州航空工业管理学院 | Ultra-thin high-temperature resistant metal polypropylene screen capacitor |
| CN106504896A (en) * | 2016-11-16 | 2017-03-15 | 安徽飞达电气科技有限公司 | A kind of anti-interference capacitance-resistance module of metallized polypropylene film |
| CN106504896B (en) * | 2016-11-16 | 2018-06-01 | 安徽飞达电气科技有限公司 | A kind of anti-interference capacitance-resistance module of metallized polypropylene film |
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| Date | Code | Title | Description |
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| 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: 20140226 Termination date: 20200930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |