CN100424794C - Dry small-sized high-voltage metallation organic film capacitor - Google Patents
Dry small-sized high-voltage metallation organic film capacitor Download PDFInfo
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- CN100424794C CN100424794C CNB031352200A CN03135220A CN100424794C CN 100424794 C CN100424794 C CN 100424794C CN B031352200 A CNB031352200 A CN B031352200A CN 03135220 A CN03135220 A CN 03135220A CN 100424794 C CN100424794 C CN 100424794C
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Abstract
The present invention discloses a small dry type high-voltage capacitor made of metallized organic films. A core encapsulated layer (3) is an epoxy resin layer (3), pressure-sensitive adhesive tapes (2) are wrapped at the peripheral surface of the epoxy resin encapsulated layer (3), an epoxy resin end perfusion layer (4) is perfused at the end head of the epoxy resin encapsulated layer (3), and a dielectric layer (8) of a core (1) comprises at least two layers of polypropylene films or polyester films. The present invention has the advantages of small size, light weight, high specific energy, small equivalent series inductance, reliable performance, high operating voltage, etc.
Description
Affiliated technical field
The present invention relates to a kind of high-voltage filtering capacitor device, relate in particular to a kind of dry-type high-voltage filtering capacitor.
Background technology
Existing high-voltage filtering capacitor device generally adopts the rectangular metal shell, and heaviness and volume are big; The medium of fuse all adopts kraft capacitor paper or paper film composite material, and its field intensity is low, for satisfying the requirement of high pressure, must increase thickness; For guaranteeing the insulation of fuse and metal shell, must serve as a contrast the thicker insulating cell material of one deck in the shell, the volume of capacitor is increased, weight increases; And for guaranteeing the insulation of exit and shell, exit palpus employing volume is big, the high pressure pottery insulator and the metal bolts structure of Heavy Weight; Space in the shell is full of liquid impregnant, and when avoiding work, liquid infiltration material seeping at high temperature is to the requirement height of sealing, seal structure complex; For avoiding capacitor when work, temperaturing lifting abnormality, the excessive expansion of liquid infiltration material causes casing deformation or blast, must reserve certain expansion space in the capacitor shell.These factors cause that the high-voltage filtering capacitor body is long-pending big, Heavy Weight, ratio energy be low, can't satisfy modern various electronic equipment, and dynamo-electric source like flying is to the requirement of small size high voltage source capacitor for filter.
Summary of the invention
Purpose of the present invention is exactly the deficiency that overcomes existing high-voltage filtering capacitor device, and a kind of dry type micro metal organic film condenser is provided, and this kind capacitor volume is little, in light weight, specific energy is high, equivalent series inductance is little, operating voltage is high, dependable performance.
The present invention solves its technical problem, and the technical scheme that is adopted is: a kind of dry type minitype high voltage metallized organic film capacitor, and by fuse, the fuse encapsulated layer, exit constitutes, and its design feature is:
A, described fuse encapsulated layer are epoxy resin layer, and the week of this epoxy resin layer is wrapped with pressure sensitive adhesive tape along bread, and the termination of epoxy resin layer is poured into epoxy resin termination perfusion layer again;
The dielectric layer of b, fuse is two layers of polypropylene film or polyester film at least, the distribute top electrode bar of a plurality of mutual interruptions of the one side of dielectric layer, and the another side of dielectric layer then is distributed with the lower electrode strip of a plurality of mutual interruptions; Top electrode bar and lower electrode strip are staggered; And the width in the interruption gap between the top electrode bar is less than the width of lower electrode strip; The gap width of lower electrode strip is less than the width of top electrode bar; The top electrode bar of dielectric layer two ends links to each other with two exits respectively; Top electrode bar, lower electrode strip are aluminium or zinc-aluminium metal layer; The thickness of top electrode strip metal layer is greater than the thickness of lower electrode strip metal layer, and wherein the square resistance of top electrode bar is 2～4 Ω/; The square resistance of lower electrode strip is 10～15 Ω/.
The invention has the beneficial effects as follows:
One, adopt epoxide resin vacuum to solidify the impregnation enveloping fuse, this encapsulated layer week is wrapped up in pressure sensitive adhesive tape along bread, and the termination of encapsulated layer is infusion epoxy resin again, saves the big and heavy metal shell of volume; The epoxide resin material that dipping solidifies permeates and be cured as integral body in fuse, saves complicated hermetically-sealed construction, also need not to add in addition insulating material and fills impregnant, and need not to reserve the thermal expansion space, does not have the danger of leakage of oil, dilatancy, blast; Exit is directly axially drawn, and also need not to adopt the higfh-tension ceramics insulator of Heavy Weight to solve Insulation Problems between exit and shell; These factors make the structure of capacitor greatly simplify, and under identical voltage, same capability situation, capacitor volume of the present invention dwindles 1～2 times, and weight saving is more than 4 times.The present invention simultaneously adopts polypropylene film or polyester film dielectric layer more than two layers thinner than the papery or the paper film medium layer of existing high-voltage capacitor, and the work field intensity is higher, under equal volume, can make the specific energy of capacitor increase three times.Through characterization test, capacitor of the present invention, operating temperature range is-55 ℃～+ 85 ℃, and range of capacity is 0.001uF～1uF, and voltage range is 1kv～40kv, work field intensity 130v/um～200v/um.Can satisfy the requirement of various electronic equipments and aircraft high voltage source fully with small size high-voltage filtering capacitor device.
Two, top electrode bar of the present invention, lower electrode strip are aluminium or zinc-aluminium metal layer; The thickness of top electrode bar is greater than the thickness of lower electrode strip, and the square resistance of top electrode bar is 2～4 Ω/; The square resistance of lower electrode strip is 10～15 Ω/.Like this, the top electrode bar side resistance that links to each other with lead is low, can guarantee the reliable and withstanding current capability of the contact of drawing; And lower electrode strip is the suspension electrode that do not link to each other with the termination, adopts thin metal layer, and temperature is low when metallization, and is little to the dielectric film infringement, when electric capacity self-healing, recovers easily simultaneously.
The two ends spraying zinc of fuse of the present invention or Zinc-tin alloy are as the termination electrode, and the top electrode that is positioned at two ends on the fuse dielectric layer links to each other with the termination electrode of same end, and the termination electrode directly links to each other with exit.
Description of drawings
Below in conjunction with drawings and Examples the present invention is done explanation in further detail.
Fig. 1 is the broken section structural representation of embodiments of the invention.
Fig. 2 is the enlarged diagram of analysing and observe of adjacent two dielectric layers of embodiment of the invention capacitor body and upper and lower electrode strip thereof.
Fig. 3 is the capacitor body end face broken section structural representation of embodiment of the invention band exit.
Embodiment
A kind of embodiment of the present invention is:
Fig. 1, Fig. 2 illustrate, by fuse 1, fuse encapsulated layer 3, in a kind of dry type minitype high voltage metallized organic film capacitor that exit 5 constitutes, fuse encapsulated layer 3 is an epoxy resin layer 3, the week of this epoxy resin layer 3 is wrapped with pressure sensitive adhesive tape 2 along bread, and the termination of epoxy resin layer 3 is poured into epoxy resin termination perfusion layer 4 again; The dielectric layer 8 of fuse 1 is two layers of polypropylene film or polyester film at least.
Fig. 2 illustrates, the distribute top electrode bar 6 of a plurality of mutual interruptions of the one side of embodiment of the invention dielectric layer 8, and the another side of dielectric layer 8 then is distributed with the lower electrode strip 7 of a plurality of mutual interruptions; The arrangement that interlaces of top electrode bar 6 and lower electrode strip 7; And the interruption gap b between the top electrode bar 6
6Width less than the width of lower electrode strip 7; The gap b of lower electrode strip 7
7Width is less than the width of top electrode bar 6.The top electrode bar 6 of dielectric layer 8 two ends links to each other with two exits 5 respectively.
During actual fabrication, on two-layer or four strata propylene thin film dielectrics layers 8, generate the thick metal layer top electrode bar 6 of a plurality of mutual interruptions earlier; On the same two-layer or four strata propylene thin film dielectrics layer 8 of another layer, generate the thin metal layer lower electrode strip 7 of a plurality of mutual interruptions again, and then will be superimposed together with the dielectric layer 8 of top electrode bar 6 and the dielectric layer 8 of band lower electrode strip 7.When superimposed, make upper and lower electrode strip 6,7 all above dielectric layer 8 separately, superimposed after, then all there is electrode strip on the two sides of each dielectric layer 8, one side is a top electrode bar 6, another side then is a lower electrode strip 7.And when superimposed, upper and lower electrode strip 6,7 is staggered, that is: makes the gap b that is centered close to or is positioned at substantially lower electrode strip 7 of top electrode bar 6
7The center, and lower electrode strip 7 is positioned at or be positioned at the gap b of top electrode bar 6 substantially
6The center.Dielectric layer 8 after superimposed the getting well is wound into cylindric again, is capacitor body 1.Also fuse 1 can be pressed into as shown in Figure 3 flat-shaped as required.
Fig. 2 also illustrates, and the capacitor body 1 of present embodiment is essentially the series connection of a plurality of internal capacitance cartridge units and constitutes, and its principle is: capacitor cell of the relative formation in left-half position of electric bar 7 under the top electrode bar 6 of left end head and the left end head; Form second internal capacitance unit and these left end head lower electrode strip 7 right half parts are relative with the left-half of second top electrode bar 6 of left end, first, second electric capacity do not have being cascaded of lead-in wire by the two halves of left end head bottom electrode, herewith, it is lower electrode strip 7 twices that whole upper and lower electrode strips 6,7 form number successively, do not have a plurality of internal capacitance cascaded structures of lead-in wire coupled in series, the inside fuse electric capacity of these series connection is drawn by the top electrode bar 6 of two ends.
Fig. 2 illustrates, and the top electrode bar 6 of present embodiment, lower electrode strip 7 are aluminium or zinc-aluminium metal layer; The thickness of the metal layer of top electrode bar 6 is greater than the thickness of lower electrode strip 7 metal layers, and the square resistance of top electrode bar 6 is 2～4 Ω/; The square resistance of lower electrode strip 7 is 10～15 Ω/.
Fig. 1, Fig. 2, Fig. 3 illustrate, and the two ends spraying zinc of fuse 1 or Zinc-tin alloy are as termination electrode 9, and the top electrode bar 6 that is positioned at two ends on fuse 1 dielectric layer 8 links to each other with the termination electrode 9 of same end, and termination electrode 9 directly links to each other with exit 5.Be that top electrode bar 6 links to each other with exit 5 by termination electrode 9.
Claims (2)
1. dry type minitype high voltage metallized organic film capacitor, by fuse (1), fuse encapsulated layer (3), exit (5) constitutes, and it is characterized in that:
A, described fuse encapsulated layer (3) are epoxy resin layer (3), and the week of this epoxy resin layer (3) is wrapped with pressure sensitive adhesive tape (2) along bread, and the termination of epoxy resin layer (3) is poured into epoxy resin termination perfusion layer (4) again;
The dielectric layer (8) of b, fuse (1) is two layers of polypropylene film or polyester film at least, the distribute top electrode bar (6) of a plurality of mutual interruptions of the one side of dielectric layer (8), and the another side of dielectric layer (8) then is distributed with the lower electrode strip (7) of a plurality of mutual interruptions; Top electrode bar (6) is staggered with lower electrode strip (7); And the width (b6) in the interruption gap (b6) between the top electrode bar (6) is less than the width of lower electrode strip (7); Gap (b7) width of lower electrode strip (7) is less than the width of top electrode bar (6); The top electrode bar (6) of dielectric layer (8) two ends links to each other with two exits (5) respectively; Top electrode bar (6), lower electrode strip (7) are aluminium or zinc-aluminium metal layer; The thickness of top electrode bar (6) metal layer is greater than the thickness of lower electrode strip (7) metal layer, and wherein the square resistance of top electrode bar (6) is 2～4 Ω/; The square resistance of lower electrode strip (7) is 10～15 Ω/.
2. a kind of dry type minitype high voltage metallized organic film capacitor according to claim 1, it is characterized in that: the two ends spraying zinc of described fuse (1) or Zinc-tin alloy are as termination electrode (9), the top electrode (6) that is positioned at the last two ends of fuse (1) dielectric layer (8) links to each other with the termination electrode (9) of same end, and termination electrode (9) directly links to each other with exit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031352200A CN100424794C (en) | 2003-06-17 | 2003-06-17 | Dry small-sized high-voltage metallation organic film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031352200A CN100424794C (en) | 2003-06-17 | 2003-06-17 | Dry small-sized high-voltage metallation organic film capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1471115A CN1471115A (en) | 2004-01-28 |
| CN100424794C true CN100424794C (en) | 2008-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031352200A Expired - Lifetime CN100424794C (en) | 2003-06-17 | 2003-06-17 | Dry small-sized high-voltage metallation organic film capacitor |
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| CN (1) | CN100424794C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365783C (en) * | 2005-01-24 | 2008-01-30 | 西安交通大学 | Designing method for improving breakdown potential of electronic element with epoxy powder pack |
| CN102737835A (en) * | 2011-04-08 | 2012-10-17 | 深圳市铜峰电子有限公司 | CBB81H type polypropylene film capacitor with characteristics of low equivalent series resistance, high-temperature resistance, and long service life |
| CN203444983U (en) * | 2013-05-27 | 2014-02-19 | 上海皓月电气有限公司 | Highly reliable motor starting/intermittent operation capacitor |
| CN104078233B (en) * | 2014-06-27 | 2017-04-19 | 中国西电电气股份有限公司 | Four-layer stacking and winding type self-healing capacitor element |
| CN104134539A (en) * | 2014-08-11 | 2014-11-05 | 安徽源光电器有限公司 | Novel high-voltage anti-explosion polypropylene film capacitor |
| CN115938804A (en) * | 2023-03-15 | 2023-04-07 | 四川省科学城久信科技有限公司 | Preparation method of thin film capacitor metallized film |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160148Y (en) * | 1993-07-22 | 1994-03-30 | 胡素珍 | Metallized polypropylene high voltage capacitor |
| GB2276765A (en) * | 1993-03-30 | 1994-10-05 | Dilipkumar Varma | Metallised film capacitor |
-
2003
- 2003-06-17 CN CNB031352200A patent/CN100424794C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2276765A (en) * | 1993-03-30 | 1994-10-05 | Dilipkumar Varma | Metallised film capacitor |
| CN2160148Y (en) * | 1993-07-22 | 1994-03-30 | 胡素珍 | Metallized polypropylene high voltage capacitor |
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| CN1471115A (en) | 2004-01-28 |
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Granted publication date: 20081008 |