CN204884887U - Be applied to film capacitor of TV power PFC circuit in a poor light - Google Patents
Be applied to film capacitor of TV power PFC circuit in a poor light Download PDFInfo
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- CN204884887U CN204884887U CN201520619912.7U CN201520619912U CN204884887U CN 204884887 U CN204884887 U CN 204884887U CN 201520619912 U CN201520619912 U CN 201520619912U CN 204884887 U CN204884887 U CN 204884887U
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Abstract
It includes that the capacitor, two metal spraying layers, two electrode lead, epoxy inlayer and fire -retardant epoxy powder are outer be applied to film capacitor of TV power PFC circuit in a poor light, this the capacitor is including the inner core sublayer and outer core layer of double pile of coiling, and each core layer includes polypropylene membrane and zinc -aluminium cladding material, and zinc -aluminium cladding material plates that to locate polypropylene epimembranal, and the polypropylene membrane of inner core sublayer extends a right side from the right side of zinc -aluminium cladding material and stays limit portion, and the left end of the zinc -aluminium cladding material of inner core sublayer is equipped with right -angle trapezoid -shaped's left zinc -aluminium thickening portion, the polypropylene membrane on outer core layer extends a left side from the left side of zinc -aluminium cladding material and stays limit portion, and the right -hand member of the zinc -aluminium cladding material on outer core layer is equipped with right -angle trapezoid -shaped's right zinc -aluminium thickening portion. The utility model discloses a left zinc -aluminium thickening portion of the capacitor and right zinc -aluminium thickening portion can optimize the electrical contact with the metal spraying layer, reduce contact resistance simultaneously, guarantee thin - film media electric field strength, improve pressure resistance, and it is more stable to work.
Description
Technical field
The utility model relates to a kind of film capacitor being applied to TV backlight electric power pfc circuit.
Background technology
Film capacitor works as electrode with metal forming, is wound into the capacitor of cylinder-like structure after it is overlapping from two ends with plastic film.When the film capacitor of this kind of structure is applied to TV backlight electric power pfc circuit, withstand voltage properties is poor, works stable not.
Utility model content
For the deficiencies in the prior art, the utility model is intended to provide a kind of film capacitor being applied to TV backlight electric power pfc circuit solved the problems of the technologies described above.
For achieving the above object, the utility model adopts following technical scheme:
Be applied to a film capacitor for TV backlight electric power pfc circuit, it is characterized in that: it is outer that it comprises capacitor body, two gilding layers, two contact conductors, epoxy resin internal layer and flame retardant epoxy powder;
Two gilding layers are sprayed at the two ends of capacitor body respectively, and two contact conductors connect two gilding layers respectively; Epoxy resin internal layer is wrapped in outside capacitor body and gilding layer; Flame retardant epoxy powder outer layer covers is outside epoxy resin internal layer;
This capacitor body comprises the interior core layer of two overlapping windings and outer core layer, each core layer comprises polypropylene basement membrane and zinc-aluminium coating, the plating of zinc-aluminium coating is located on polypropylene basement membrane, the polypropylene basement membrane of interior core layer extends a right side from the right side of zinc-aluminium coating and stays edge, and the left end of the zinc-aluminium coating of interior core layer is provided with the left zinc-aluminium thickening part of right-angled trapezium shape; The polypropylene basement membrane of outer core layer extends a left side from the left side of zinc-aluminium coating and stays edge, and the right-hand member of the zinc-aluminium coating of outer core layer is provided with the right zinc-aluminium thickening part of right-angled trapezium shape; Interior core layer and outer core layer superimposed time, the left end of interior core layer extends outside outer core layer, and the right-hand member of outer core layer extends outside interior core layer, with the overlapping winding that staggers.
Preferably, polypropylene basement membrane adopts high temperature modification polypropylene film.
The beneficial effects of the utility model are at least as follows:
It is in electrical contact that the left zinc-aluminium thickening part of capacitor body of the present utility model and right zinc-aluminium thickening part can be optimized with gilding layer, reduces contact resistance simultaneously, ensure thin film dielectrics electric field strength, improve withstand voltage properties, work more stable.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model is applied to the better embodiment of the film capacitor of TV backlight electric power pfc circuit.
Fig. 2 is the tiling cross-sectional view of the capacitor body of the film capacitor of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
Refer to Fig. 1, the utility model relates to a kind of film capacitor being applied to TV backlight electric power pfc circuit, and its better embodiment comprises capacitor body 1, two gilding layer 2, two contact conductor 3, epoxy resin internal layer 4 and flame retardant epoxy powder skin 5.
Two gilding layers 2 are sprayed at the two ends of capacitor body 1 respectively, and two contact conductors 3 connect two gilding layers 2 respectively; Epoxy resin internal layer 4 is wrapped in outside capacitor body 1 and gilding layer 2; Flame retardant epoxy powder skin 5 is wrapped in outside epoxy resin internal layer 4.
See Fig. 2, this capacitor body 1 comprises the interior core layer of two overlapping windings and outer core layer, each core layer comprises polypropylene basement membrane 8 and zinc-aluminium coating 7, zinc-aluminium coating 7 plating is located on polypropylene basement membrane 8, the polypropylene basement membrane 8 of interior core layer extends a right side from the right side of zinc-aluminium coating 7 and stays edge 81, and the left end of the zinc-aluminium coating 7 of interior core layer is provided with the left zinc-aluminium thickening part 71 of right-angled trapezium shape; The polypropylene basement membrane 8 of outer core layer extends a left side from the left side of zinc-aluminium coating 7 and stays edge 82, and the right-hand member of the zinc-aluminium coating 7 of outer core layer is provided with the right zinc-aluminium thickening part 72 of right-angled trapezium shape; Interior core layer and outer core layer superimposed time, the left end of interior core layer extends outside outer core layer, and the right-hand member of outer core layer extends outside interior core layer, forms the core structures of the overlapping winding that staggers, so, add webbing safety diaphragm by two and half T-shaped polypropylene zinc-aluminiums and form the core structures reeled.
So, it is in electrical contact that the left zinc-aluminium thickening part 71 of capacitor body 1 of the present utility model and right zinc-aluminium thickening part 72 can be optimized with gilding layer 2, reduces contact resistance simultaneously, ensure thin film dielectrics electric field strength, improve withstand voltage properties, work more stable.
In addition, the stagger core structures of overlapping winding of this novel practical has complementary function, when certain region because of electric current excessive time, fuse can disconnect, small region can be isolated, and can not continue make other region self-healing or puncture, thus reaches and can realize super-small, capacitance loss is little, can ensure again the object of electrical property.
Preferably, polypropylene basement membrane 8 adopts high temperature modification polypropylene film.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection range of the utility model claim.
Claims (2)
1. be applied to a film capacitor for TV backlight electric power pfc circuit, it is characterized in that:
It is outer that it comprises capacitor body, two gilding layers, two contact conductors, epoxy resin internal layer and flame retardant epoxy powder;
Two gilding layers are sprayed at the two ends of capacitor body respectively, and two contact conductors connect two gilding layers respectively; Epoxy resin internal layer is wrapped in outside capacitor body and gilding layer; Flame retardant epoxy powder outer layer covers is outside epoxy resin internal layer;
This capacitor body comprises the interior core layer of two overlapping windings and outer core layer, each core layer comprises polypropylene basement membrane and zinc-aluminium coating, the plating of zinc-aluminium coating is located on polypropylene basement membrane, the polypropylene basement membrane of interior core layer extends a right side from the right side of zinc-aluminium coating and stays edge, and the left end of the zinc-aluminium coating of interior core layer is provided with the left zinc-aluminium thickening part of right-angled trapezium shape; The polypropylene basement membrane of outer core layer extends a left side from the left side of zinc-aluminium coating and stays edge, and the right-hand member of the zinc-aluminium coating of outer core layer is provided with the right zinc-aluminium thickening part of right-angled trapezium shape; Interior core layer and outer core layer superimposed time, the left end of interior core layer extends outside outer core layer, and the right-hand member of outer core layer extends outside interior core layer, with the overlapping winding that staggers.
2. be applied to the film capacitor of TV backlight electric power pfc circuit as claimed in claim 1, it is characterized in that: polypropylene basement membrane adopts high temperature modification polypropylene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619912.7U CN204884887U (en) | 2015-08-17 | 2015-08-17 | Be applied to film capacitor of TV power PFC circuit in a poor light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619912.7U CN204884887U (en) | 2015-08-17 | 2015-08-17 | Be applied to film capacitor of TV power PFC circuit in a poor light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204884887U true CN204884887U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520619912.7U Active CN204884887U (en) | 2015-08-17 | 2015-08-17 | Be applied to film capacitor of TV power PFC circuit in a poor light |
Country Status (1)
| Country | Link |
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| CN (1) | CN204884887U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742062A (en) * | 2016-04-08 | 2016-07-06 | 郑州航空工业管理学院 | Pulse metallic polypropylene film capacitor |
| CN106128760A (en) * | 2016-08-11 | 2016-11-16 | 苏州柯创电子材料有限公司 | Metallized film capacitor based on PET |
| CN109891534A (en) * | 2016-10-28 | 2019-06-14 | 松下知识产权经营株式会社 | Thin film capacitor |
-
2015
- 2015-08-17 CN CN201520619912.7U patent/CN204884887U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742062A (en) * | 2016-04-08 | 2016-07-06 | 郑州航空工业管理学院 | Pulse metallic polypropylene film capacitor |
| CN105742062B (en) * | 2016-04-08 | 2018-05-11 | 郑州航空工业管理学院 | A kind of pulse metal polypropylene screen capacitor |
| CN106128760A (en) * | 2016-08-11 | 2016-11-16 | 苏州柯创电子材料有限公司 | Metallized film capacitor based on PET |
| CN109891534A (en) * | 2016-10-28 | 2019-06-14 | 松下知识产权经营株式会社 | Thin film capacitor |
| CN109891534B (en) * | 2016-10-28 | 2021-02-19 | 松下知识产权经营株式会社 | Thin film capacitor |
| US10991508B2 (en) | 2016-10-28 | 2021-04-27 | Panasonic Intellectual Property Management Co., Ltd. | Film capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |