CN111863446A - Metallized film for slowing down capacitance capacity loss in humid environment - Google Patents
Metallized film for slowing down capacitance capacity loss in humid environment Download PDFInfo
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- CN111863446A CN111863446A CN202010822185.XA CN202010822185A CN111863446A CN 111863446 A CN111863446 A CN 111863446A CN 202010822185 A CN202010822185 A CN 202010822185A CN 111863446 A CN111863446 A CN 111863446A
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- layer
- gradual change
- film
- metallized film
- humid environment
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- 239000011104 metalized film Substances 0.000 title claims abstract description 37
- 239000010410 layer Substances 0.000 claims abstract description 97
- 239000010408 film Substances 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 28
- 239000011241 protective layer Substances 0.000 claims abstract description 28
- 230000008719 thickening Effects 0.000 claims abstract description 12
- 239000005662 Paraffin oil Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 230000000116 mitigating effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/33—Thin- or thick-film capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a metalized film for slowing down capacitance loss in a humid environment, which comprises a base film, wherein the upper end surface of the base film is provided with a metal layer, one end of the upper end surface of the metal layer is provided with a first gradual change layer and a thickening layer, the other end of the upper end surface of the metal layer is provided with a second gradual change layer, the side walls of the second gradual change layer and the metal layer are sprayed with a first protective layer, and a reserved edge is arranged on the base film close to the second gradual change layer. According to the invention, the first gradual change layer is positioned inside the metalized film, the thickening layer is abutted with the first gradual change layer, the two layers are consistent in height, the second gradual change layer is arranged at the other end of the upper end face of the metal layer, the height of the second gradual change layer is lower than that of the first gradual change layer, and the second gradual change layer is arranged, so that the size of gaps among films is changed, and moisture in the external environment is difficult to enter the gaps among the films.
Description
Technical Field
The invention relates to the technical field of electronic elements, in particular to a metalized film for slowing down capacitance loss in a humid environment.
Background
In order to achieve the purpose of insulating electrodes on two sides of a medium, a film capacitor is designed by blank margin on the surface of the medium. The blank margin is a non-coating area. Therefore, the plating layer at the edge of the capacitor is easy to corrode due to the moisture entering the capacitor in the use process of the capacitor in a humid environment, so that the capacity of the capacitor is quickly attenuated. When the film capacitor is used in a humid environment, the capacity fading speed is high.
Accordingly, the present invention provides a metallized film that mitigates capacitance loss in a humid environment.
Disclosure of Invention
The invention aims to: in order to solve the above problems, a metallized film is proposed to reduce the capacitance loss in a humid environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a slow down metallized film of capacitance capacity loss under humid environment, includes the base film, the up end of base film has the metal level, the one end of the up end of metal level has first gradual change layer and thickening layer, the other end of the up end of metal level has second gradual change layer, the spraying has first inoxidizing coating on second gradual change layer and the lateral wall of metal level, the position that is close to second gradual change layer on the base film has the limit of staying.
As a further description of the above technical solution:
the first gradual change layer is located the inside of metallized film, and its cross-section is right triangle, thickening layer and first gradual change layer butt, and both highly uniform, the cross-section of thickening layer is the rectangle, and the lateral wall of thickening layer and metal level keeps unanimous.
As a further description of the above technical solution:
the height of the second gradual change layer is lower than that of the first gradual change layer, the width of the second gradual change layer is larger than that of the first gradual change layer, and the section of the second gradual change layer is a right-angled triangle.
As a further description of the above technical solution:
an inter-film gap is formed between the base film and the metal layer of the other metallized film, and a gap opening is formed between the second gradient layer and the base film of the other metallized film.
As a further description of the above technical solution:
and a second protective layer is sprayed on the lower end surface of the base film on one side of the gap.
As a further description of the above technical solution:
the margin is a rectangular portion on the base film without the metal layer.
As a further description of the above technical solution:
the first protective layer and the second protective layer are one of silicone oil and paraffin oil, and the first protective layer and the second protective layer are sprayed on the gap opening in an intersecting mode.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the first gradual change layer is positioned inside the metalized film, the thickening layer is abutted with the first gradual change layer, the two layers are consistent in height, the second gradual change layer is arranged at the other end of the upper end face of the metal layer, the height of the second gradual change layer is lower than that of the first gradual change layer, and the second gradual change layer is arranged, so that the size of gaps among films is changed, and moisture in the external environment is difficult to enter the gaps among the films.
2. The invention replaces the traditional metal layer with a metallized film with a second gradual change layer, so that gas in a gap between films can only exchange through the gap opening, a silicon oil or paraffin oil coating sprayed on the gap opening can effectively absorb a part of heat, meanwhile, moisture of the external environment is prevented from directly entering the gap between films through the gap opening, when the capacitor generates heat and actively releases the gas in the gap between films, the gas can pass through the first protective layer and the second protective layer to be released, the metallized film is corrosion-resistant due to the arrangement of the second gradual change layer, the metallized film is effectively prevented from being corroded, and the service life of the capacitor is prolonged.
3. In the invention, the position of the base film close to the second gradient layer is provided with the reserved edge, and the whole surface of the metallized film roll with the side with the reserved edge is sprayed with the silicone oil or the paraffin oil, so that the spraying of the first protective layer and the second protective layer can be realized, the insulating capability of the capacitor is effectively enhanced, and the manufactured capacitor has stronger short-circuit resistance.
Drawings
FIG. 1 is a schematic front view of a metallized film for reducing capacitance loss in a humid environment according to the present invention;
FIG. 2 is a schematic diagram of a dual-layer stack structure of a metalized film for mitigating capacitance loss in a humid environment according to the present invention;
illustration of the drawings:
1. a base film; 2. a metal layer; 3. thickening the layer; 4. a first graded layer; 5. a second graded layer; 6. a first protective layer; 7. a second protective layer; 8. reserving edges; 9. an inter-membrane gap; 10. a clearance opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the upper surface of the base film 1 has a metal layer 2, one end of the upper surface of the metal layer 2 has a first graded layer 4 and a thickened layer 3, the first graded layer 4 is located inside the metallized film and has a right triangle cross section, the thickened layer 3 is abutted against the first graded layer 4 and has a same height, the thickened layer 3 has a rectangular cross section and the thickened layer 3 keeps a same height with the outer sidewall of the metal layer 2, the other end of the upper surface of the metal layer 2 has a second graded layer 5, the height of the second graded layer 5 is lower than the height of the first graded layer 4, the width of the second graded layer 5 is larger than the width of the first graded layer 4, the cross section of the second graded layer 5 is a right triangle, the size of the inter-film gap 9 is changed due to the second graded layer 5, so that moisture of the external environment is hard to enter between the inter-film gap 9, and a gap 10 is maintained, for heat dissipation between the metallized films.
Example 2
Referring to fig. 1-2, instead of the conventional metal layer 2, a metallized film with a second graded layer 5, so that the gas in the film gap 9 can only exchange through the gap opening 10, the heat is mainly transferred through the gap opening 10 and the first protective layer 6 and the second protective layer 7 on the metallized film, the silicone oil or paraffin oil coating sprayed on the gap opening 10 can effectively absorb a part of the heat, at the same time, moisture from the external environment is prevented from directly entering the interpilm gap 9 through the gap opening 10, and when the capacitor generates heat, when the gas in the inter-film gap 9 is actively released, the gas can pass through the first protective layer 6 and the second protective layer 7 to be released, the second gradient layer 5 is arranged, the metallized film is corrosion-resistant, and the first protective layer 6 and the second protective layer 7 are arranged, so that the metallized film can effectively resist corrosion, and the service life of the capacitor is prolonged.
Example 3
Referring to fig. 1-2, in a conventional manufacturing process of a capacitor core package, two cakes of metallized film rolls are required to be rolled in different directions, a first protective layer 6 and a second protective layer are sprayed on the metallized film rolls before rolling, which is an optimal spraying stage, the first protective layer 6 is sprayed on the side walls of the second gradual change layer 5 and the metal layer 2, a reserved edge 8 is arranged at a position on the base film 1 close to the second gradual change layer 5, and silicone oil or paraffin oil is sprayed on the whole surface of the metallized film roll with the reserved edge 8, so that the first protective layer 6 and the second protective layer 7 can be sprayed, and the insulating capability of the capacitor is effectively enhanced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a slow down metallized film of capacitance capacity loss under humid environment, includes base film (1), its characterized in that, the up end of base film (1) has metal level (2), the one end of the up end of metal level (2) has first gradual change layer (4) and thickening layer (3), the other end of the up end of metal level (2) has second gradual change layer (5), the spraying has first inoxidizing coating (6) on the lateral wall of second gradual change layer (5) and metal level (2), the position that is close to second gradual change layer (5) on base film (1) has margin (8).
2. The metallized film for mitigating capacitance loss in a humid environment according to claim 1, wherein said first graded layer (4) is located inside the metallized film, and has a cross section of right triangle, said thickening layer (3) abuts against the first graded layer (4), and both are highly uniform, said thickening layer (3) has a cross section of rectangle, and the thickening layer (3) is uniform with the outer sidewall of the metal layer (2).
3. The metallized film for slowing down capacitance capacity loss in a humid environment according to claim 1, wherein the height of the second graded layer (5) is lower than that of the first graded layer (4), the width of the second graded layer (5) is greater than that of the first graded layer (4), and the cross section of the second graded layer (5) is a right triangle.
4. A metallized film for mitigating capacitance loss in a wet environment, according to claim 1, wherein said base film (1) has an inter-film gap (9) with the metal layer (2) of another metallized film, and said second graded layer (5) has a gap opening (10) with the base film (1) of another metallized film.
5. The metallized film for reducing capacitance loss in a humid environment according to claim 4, characterized in that one side of said gap opening (10) is coated with a second protective layer (7) on the lower end face of the base film (1).
6. The metallized film for mitigating capacitance loss in a humid environment according to claim 4, characterized in that said margin (8) is a rectangular portion on the base film (1) without the metal layer (2).
7. The metallized film for reducing the capacitance loss in a humid environment according to claim 4, wherein said first protective layer (6) and said second protective layer (7) are one of silicone oil and paraffin oil, and said first protective layer (6) and said second protective layer (7) are cross-sprayed on said gap opening (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822185.XA CN111863446B (en) | 2020-08-16 | 2020-08-16 | Metallized film for slowing down capacitance capacity loss in humid environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822185.XA CN111863446B (en) | 2020-08-16 | 2020-08-16 | Metallized film for slowing down capacitance capacity loss in humid environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111863446A true CN111863446A (en) | 2020-10-30 |
| CN111863446B CN111863446B (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010822185.XA Active CN111863446B (en) | 2020-08-16 | 2020-08-16 | Metallized film for slowing down capacitance capacity loss in humid environment |
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| Country | Link |
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| CN (1) | CN111863446B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472428A (en) * | 2022-08-12 | 2022-12-13 | 安徽省宁国市海伟电子有限公司 | Metallized film for film capacitor and film capacitor |
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| JPS52142257A (en) * | 1976-05-21 | 1977-11-28 | Hitachi Ltd | Thick film capacitor |
| JP2008258471A (en) * | 2007-04-06 | 2008-10-23 | Matsushita Electric Ind Co Ltd | Metallized film capacitor and case mold type capacitor using the same |
| CN101416259A (en) * | 2006-03-31 | 2009-04-22 | 英特尔公司 | Inkjet patterning for thin-film capacitor fabrication, thin-film capacitors fabricated thereby, and systems containing same |
| CN203456307U (en) * | 2013-09-30 | 2014-02-26 | 东莞市纬迪实业有限公司 | Large-power LED street lamp thin film capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472428A (en) * | 2022-08-12 | 2022-12-13 | 安徽省宁国市海伟电子有限公司 | Metallized film for film capacitor and film capacitor |
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| Publication number | Publication date |
|---|---|
| CN111863446B (en) | 2021-11-26 |
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