CN207052454U - A kind of metallized film applied to DC Link - Google Patents
A kind of metallized film applied to DC Link Download PDFInfo
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- CN207052454U CN207052454U CN201720932854.2U CN201720932854U CN207052454U CN 207052454 U CN207052454 U CN 207052454U CN 201720932854 U CN201720932854 U CN 201720932854U CN 207052454 U CN207052454 U CN 207052454U
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Abstract
The utility model provides a kind of metallized film applied to DC Link, including the first two-sided metallization film, first medium film, the second two-sided metallization film and the second medium film being arranged in order；First medium film aligns with second medium film left and right ends；First two-sided metallization film and the second two-sided metallization film setting straggly；First two-sided metallization film and the second two-sided metallization film expose the left/right end or right/left end of first medium film and second medium film respectively；The upper and lower surface of first two-sided metallization film and the second two-sided metallization film is respectively equipped with dielectric separation band.The utility model uses two-sided metallization film, has the advantages that small volume, conductive area and capacity area are big, and dielectric separation band is set on metallized film, it may make up inner series structure, pressure-resistant performance is improved, therefore can be advantageously applied in DC Link, substitutes electrochemical capacitor.
Description
Technical field
The utility model belongs to capacitor production base material field, and in particular to a kind of metallization applied to DC-Link is thin
Film.
Background technology
DC-Link capacitors, i.e. direct current support capacitor, belong to a kind of passive device.DC-Link is primarily referred to as in inversion
Direct current is connected as input power by dc bus with inverter in device.Inverter is derived from virtual value and peak value very
High pulse current, but can also produce and make inverter be difficult to the very high pulse voltage born, it is therefore desirable to connect DC-Link electricity
Hold to absorb the high impulse currents that inverter is asked for DC-link, prevent to produce very high pulse voltage on DC-Link.
DC-Link capacitors need have high pressure resistant, resistance to high current, Low ESR, low inductance, capacity loss small, stability
Can be good, discharge and recharge is fast, safety and stability, long service life the characteristics of.By development for many years, thin film capacitor especially metallizes
Thin film capacitor turns into the main flow of DC-Link capacitors.Metallic film capacitor have small volume, capacity are big, have self-healing property,
The advantages that high pressure.But existing metallic film capacitor compared with type metal foil type electric capacity, also there is capacity stability not in it
The shortcomings that foot and tolerance high current ability.Wherein capacity stability deficiency when due to being normally resulted in after thin film capacitor self-healing
Capacity reduces, and it is because thin film capacitor is thinner than metal foil to be resistant to high current ability.
Patent saw-toothed polypropylene metallized film (day for announcing 2011.01.26, notification number CN201725682U) discloses
A kind of saw-toothed polypropylene metallized film, it includes metal level and polypropylene media layer, and metal level is vaporized on polypropylene Jie
On matter layer, and provided with side is stayed, toothing is cut in the metallization side of metallized film.The patent avoids capacitor body end
The raised phenomenon in face, contact area during capacitor body metal spraying can be increased, improve extraction electrode and capacitor body gilding layer
Adhesive force.But the patent, which fails capacity after solving the problems, such as self-healing, to be reduced, also fail to be obviously improved the ability of resistance to high current.
Therefore it is badly in need of a kind of small volume, high pressure resistant, resistance to high current is applied to DC-Link metallized film.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of metallized film applied to DC-Link, the gold
Categoryization film has the advantages of small volume, conductive area and capacity area are big, resistance to pressure is good, can meet DC-Link capacitors
Demand.
The utility model provides following technical scheme：
A kind of metallized film applied to DC-Link, including the first two-sided metallization film, the first medium being arranged in order
Film, the second two-sided metallization film and second medium film；First medium film aligns with second medium film left and right ends；First two-sided gold
Categoryization film and the second two-sided metallization film setting straggly；First two-sided metallization film and the second two-sided metallization film expose respectively
The left/right end or right/left end of one deielectric-coating and second medium film；First two-sided metallization film and the second two-sided metallization film it is upper
Lower surface is respectively equipped with dielectric separation band.
Preferably, the dielectric separation band that the upper and lower surface of the first two-sided metallization film is set is respectively dielectric separation on first
Band and first time dielectric separation band；The dielectric separation band that the upper and lower surface of second two-sided metallization film is set is respectively exhausted on second
Edge dividing strip and second time dielectric separation band；The width of dielectric separation band is identical.
Preferably, the first two-sided metallization film and the second two-sided metallization film upper surface are provided with thickened area, and thickened area is zinc
Aluminium coat.
Preferably, thickened area includes the first thickened area for being built up on the first two-sided metallization film and to be built up in second two-sided
The second thickened area on metalized film；The thickness of first thickened area exposes the edge of one end to first by the first two-sided metallization film
Upper dielectric separation band edge is gradually decreased to zero by maximum；The thickness of second thickened area exposes one end by the second two-sided metallization film
Edge to dielectric separation band edge on second be gradually decreased to zero by maximum.
Preferably, the width of the first two-sided metallization film is equal with the width of the second two-sided metallization film.
Preferably, the width of dielectric separation band is less than three points of the width of the first two-sided metallization film and two-sided metallization film
One of.
Preferably, the first two-sided metallization film and the second two-sided metallization film are polypropylene metallized film.
Preferably, first medium film and second medium film are polypropylene film.
The beneficial effects of the utility model are：
1st, the utility model structure uses two two-sided metallization films, and two-sided metallization film has small volume, conductive area
It is big with capacity area, high current is resistant to, the advantages of service life is long, caloric value is small, cost is low.
2nd, dielectric separation band is set up in two-sided metallization film upper and lower surface center, may make up inner series structure, is improved resistance to
Press performance.
3rd, the first two-sided metallization film left end of misalignment sets the first thickened area, the second double-sided metal of misalignment to the right to the left
To change film right-hand member and the second thickened area is set, edge coating, which thickeies, enables metallized film preferably to be contacted with gilding layer, reduce etc.
Series capacitance is imitated, improves the adhesive force of extraction electrode and gilding layer.
4th, the first thickened area and the second thickened area use zinc-aluminium coating, can anti-oxidation, stability is good.
5th, the first thickened area and the second thickened area thickness gradually change trend and electric current distribution from thickened area most webbing
Edge to thickened area most thin edges decline trend is consistent, and self-healing property is good, improves self-healing ability.
6th, the first two-sided metallization film and the second two-sided metallization film are polypropylene metallized film, and first medium film
Polypropylene film is used with second medium film, because polypropylene film high-frequency loss is extremely low, capacitance stability is very high, negative temperature
The advantages of coefficient is smaller, insulaion resistance is high, dielectric strength is high, the needs of DC-Link capacitors can be met.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the utility model structure diagram.
In figure mark for：1st, the first two-sided metallization film；2nd, the second two-sided metallization film；3rd, first medium film；4th, second
Deielectric-coating；11st, dielectric separation band on first；12nd, first time dielectric separation band；13rd, the first thickened area；21st, insulation point on second
Every band；22nd, second time dielectric separation band；23rd, the second thickened area.
Embodiment
Preferred embodiment of the present utility model is described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of metallized film applied to DC-Link, including the first two-sided metallization being arranged in order
Film 1, first medium film 3, the second two-sided metallization film 2 and second medium film 4；First medium film 3 and second medium film 4 or so two
End alignment；The width of first two-sided metallization film 1 is equal with the width of the second two-sided metallization film 2；First two-sided metallization film 1
Left end stretch out outside the left end of first medium film 3；The right-hand member of second two-sided metallization film 2 stretches out the right-hand member of second medium film 4
Outside；The upper and lower surface of first two-sided metallization film 1 and the second two-sided metallization film 2 is respectively equipped with width identical dielectric separation
Band.The dielectric separation band that the upper and lower surface of first two-sided metallization film 1 is set is respectively dielectric separation band 11 and first on first
Lower dielectric separation band 12；The dielectric separation band that the upper and lower surface of second two-sided metallization film 2 is set is respectively insulation point on second
Every band 21 and second time dielectric separation band 22.
First two-sided metallization film 1 and the upper surface of the second two-sided metallization film 2 are provided with thickened area.Plated for zinc-aluminium thickened area
Layer.Thickened area includes the first thickened area 13 being built up on the first two-sided metallization film 1 and is built up in the second two-sided metallization film 2
On the second thickened area 23.The thickness of first thickened area 13 is insulated by the high order end edge of the first two-sided metallization film 1 to first
The edge of dividing strip 11 is gradually decreased to zero by maximum；The thickness of second thickened area 23 is by the low order end side of the second two-sided metallization film 2
Gradually it is decreased to zero by maximum along to the edge of dielectric separation band 21 on second.
Specifically, the width of dielectric separation band is less than the three of the width of the first two-sided metallization film 1 and two-sided metallization film 2
/ mono-.
Specifically, the first two-sided metallization film 1 and the second two-sided metallization film 2 are polypropylene metallized film.First is situated between
Plasma membrane 3 and second medium film 4 are polypropylene film.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, although ginseng
The utility model is described in detail according to previous embodiment, for those skilled in the art, it still can be with
Technical scheme described in foregoing embodiments is modified, or equivalent substitution is carried out to which part technical characteristic.It is all
Within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc., this practicality should be included in
Within new protection domain.
Claims (8)
- A kind of 1. metallized film applied to DC-Link, it is characterised in thatIncluding the first two-sided metallization film, first medium film, the second two-sided metallization film and the second medium film being arranged in order；The first medium film aligns with the second medium film left and right ends；The first two-sided metallization film and the second two-sided metallization film setting straggly；The first two-sided metallization film with The second two-sided metallization film exposes the left/right end or right/left end of the first medium film and the second medium film respectively；The upper and lower surface of the first two-sided metallization film and the second two-sided metallization film is respectively equipped with dielectric separation band.
- 2. the metallized film according to claim 1 applied to DC-Link, it is characterised in thatThe dielectric separation band that the upper and lower surface of the first two-sided metallization film is set is respectively dielectric separation band on first With first time dielectric separation band；The dielectric separation band that the upper and lower surface of the second two-sided metallization film is set is respectively dielectric separation band on second With second time dielectric separation band；The width of the dielectric separation band is identical.
- 3. the metallized film according to claim 2 applied to DC-Link, it is characterised in that the first two-sided gold Categoryization film and the second two-sided metallization film upper surface are provided with thickened area, and the thickened area is zinc-aluminium coating.
- 4. the metallized film according to claim 3 applied to DC-Link, it is characterised in that the thickened area includes The first thickened area being built up on the first two-sided metallization film and be built up on the second two-sided metallization film second Thickened area；The thickness of first thickened area exposes the edge of one end by the first two-sided metallization film and insulated to described first Separate band edge and be gradually decreased to zero by maximum；The thickness of second thickened area exposes the edge of one end by the second two-sided metallization film and insulated to described second Separate band edge and be gradually decreased to zero by maximum.
- 5. the metallized film according to claim 1 applied to DC-Link, it is characterised in that the first two-sided gold The width of categoryization film is equal with the width of the second two-sided metallization film.
- 6. the metallized film according to claim 5 applied to DC-Link, it is characterised in that the dielectric separation band Width be less than the first two-sided metallization film and the two-sided metallization film width 1/3rd.
- 7. the metallized film applied to DC-Link according to any one of claim 1 to 6, it is characterised in that described One two-sided metalized film and the second two-sided metallization film are polypropylene metallized film.
- 8. the metallized film according to claim 7 applied to DC-Link, it is characterised in that the first medium film It is polypropylene film with the second medium film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720932854.2U CN207052454U (en) | 2017-07-29 | 2017-07-29 | A kind of metallized film applied to DC Link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720932854.2U CN207052454U (en) | 2017-07-29 | 2017-07-29 | A kind of metallized film applied to DC Link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207052454U true CN207052454U (en) | 2018-02-27 |
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ID=61496853
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720932854.2U Active CN207052454U (en) | 2017-07-29 | 2017-07-29 | A kind of metallized film applied to DC Link |
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|---|---|
| CN (1) | CN207052454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799092A (en) * | 2020-06-18 | 2020-10-20 | 上海置信智能电气有限公司 | Thin film capacitor and manufacturing method thereof |
-
2017
- 2017-07-29 CN CN201720932854.2U patent/CN207052454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799092A (en) * | 2020-06-18 | 2020-10-20 | 上海置信智能电气有限公司 | Thin film capacitor and manufacturing method thereof |
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