CN108987109B - Internal series metallized safety film capacitor - Google Patents
Internal series metallized safety film capacitor Download PDFInfo
- Publication number
- CN108987109B CN108987109B CN201810782625.6A CN201810782625A CN108987109B CN 108987109 B CN108987109 B CN 108987109B CN 201810782625 A CN201810782625 A CN 201810782625A CN 108987109 B CN108987109 B CN 108987109B
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- CN
- China
- Prior art keywords
- safety film
- metallized safety
- metallized
- film
- isolation belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- 238000002955 isolation Methods 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 65
- 238000000034 method Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000011104 metalized film Substances 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
- H01G4/005—Electrodes
- H01G4/015—Special provisions for self-healing
-
- 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
- H01G2/14—Protection against electric or thermal overload
- H01G2/16—Protection against electric or thermal overload with fusing elements
-
- 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
- H01G4/30—Stacked capacitors
-
- 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
- H01G4/32—Wound capacitors
-
- 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 particularly relates to an internal serial type metallized safety film capacitor which comprises a shell, capacitor elements and an extraction end, wherein the capacitor elements are positioned in the shell, the extraction end is positioned at one end of the shell, and the capacitor elements are formed by winding two layers of metallized safety films. The first mesh-type metallized safety film and the T-type metallized safety film are connected with each other and overlapped to form an inner string structure, or the first mesh-type metallized safety film and the second mesh-type metallized safety film are connected with each other and overlapped to form an inner string structure. The invention has the beneficial effects that: when self-healing breakdown occurs in a local range, the safety bar can be quickly fused, so that the safety bar is disconnected with surrounding conductive grids, the self-healing range is prevented from being continuously enlarged, high-voltage arc discharge is prevented, and the S3 explosion-proof reliability of the capacitor is greatly improved.
Description
Technical Field
The invention particularly relates to an internal serial metallized safety film capacitor.
Background
The S3 explosion-proof grade capacitor currently sold in the market mainly has two defects: 1. the explosion-proof performance is unreliable; 2. the capacitor has unstable service life and poor consistency. The capacitor which is wound by overlapping a layer of metallized safety film and a layer of common zinc-aluminum film or two layers of T-shaped structure metallized safety films is adopted in the current market, so that the safety performance reliability is low; the service life of the capacitor adopting the two layers of reticular metallized safety films is greatly influenced by a plurality of factors such as a base film, film coating quality, a manufacturing process and the like, so that the service life of the capacitor is unstable and the consistency is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a metallized safety film capacitor with stable and reliable operation grade reaching A/B grade (30000 h/10000 h) and S3 explosion-proof performance.
The invention discloses an internal serial type metallized safety film capacitor, which comprises a shell, capacitor elements and an extraction end, wherein the capacitor elements are positioned in the shell, the extraction end is positioned at one end of the shell, and the capacitor elements are formed by winding two layers of metallized safety films.
The first metallized safety film is a first netlike metallized safety film, a first blank isolation belt is arranged in the middle of the first metallized safety film, and the first blank isolation belt separates a first conductive grid and a second conductive grid which are separated by the netlike metallized safety film.
The second metallized safety film is a second netlike metallized safety film or a T-shaped metallized safety film, a third blank isolation belt is arranged in the middle of the second metallized safety film, at least one second safety bar is arranged in the third blank isolation belt, the second safety bars are connected with a third conductive grid and a fourth conductive grid which are mutually separated, and the first netlike metallized safety film and the second metallized safety film are mutually connected and overlapped to form an inner string structure.
Specifically, further, the edges of the first conductive grid and the second conductive grid are respectively provided with a metal sideband, a second blank isolation belt is arranged between the metal sideband and the first conductive grid and between the metal sideband and the second conductive grid, the second blank isolation belt is provided with at least one first safety strip, and the metal sideband is connected with the grid areas of the first conductive grid and the second conductive grid respectively by the first safety strip.
Specifically, further, the edges of two sides of the second metallized safety film are provided with blank edges.
Specifically, the width of the third blank isolation belt in the middle of the second metallized safety film is smaller than that of the first blank isolation belt in the middle of the first metallized safety film.
In particular, the second metallized security film width is less than the first metallized security film width.
The invention has the beneficial effects that: the structure fully utilizes the superiority of the first reticular metallized safety film and the T-shaped metallized safety film in the explosion-proof performance that the first reticular metallized safety film and the T-shaped metallized safety film are connected with each other and overlapped to form an inner serial structure, or the first reticular metallized safety film and the second reticular metallized safety film are connected with each other and overlapped to form the inner serial structure, the self-healing breakdown occurs in a local area through designing the sizes of the first safety bar and the second safety bar of a proper grid, the first safety bar or the second safety bar of the part can be quickly fused, the first safety bar or the second safety bar of the part is disconnected with surrounding conductive grids, the continuous expansion of the self-healing area is prevented, and the high-voltage arc discharge is prevented through designing the width of the first blank isolation belt and the width of the third blank isolation belt, so that the S3 explosion-proof reliability of the capacitor is greatly improved; through setting up interior cluster formula structure, the effectual withstand voltage ability that improves the electric capacity prime, therefore this condenser can not fuse hardly at the normal operating in-process safety film first safety strip or second safety strip to guarantee that the life-span of this kind of condenser is longer more stable.
Drawings
FIG. 1 is a schematic view of the structure of the middle-left edge safety film of the present invention.
FIG. 2 is a schematic illustration of the structure of the double-edge security film of the present invention.
Fig. 3 is a schematic diagram of another embodiment of fig. 2.
The following drawings illustrate: a first metallized security film 1; a second metallized security film 2; a first blank spacer 3; a first conductive mesh 4; a second conductive mesh 41; a metal sideband 5; a second blank spacer 6; a first bumper 7; a third blank spacer 8; a second safety bar 9; a third conductive mesh 10; a fourth conductive mesh 101; leaving a margin 11.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
An inner string type metallized safety film capacitor according to an embodiment of the present invention is described below with reference to fig. 1 to 3, and comprises a case, a capacitor element and a lead-out terminal, wherein the capacitor element is located in the case, the lead-out terminal is located at one end of the case, and the capacitor element is formed by winding two layers of metallized safety films, wherein: the first metallized safety film 1 is a first netlike metallized safety film, a first blank isolation belt 3 is arranged in the middle of the first metallized safety film 1, the first blank isolation belt 3 separates the netlike metallized safety film into a first conductive grid 4 and a second conductive grid 41, the second metallized safety film 2 is a second netlike metallized safety film (shown in fig. 1 or 2) or a T-shaped metallized safety film (shown in fig. 3), a third blank isolation belt 8 is arranged in the middle of the second metallized safety film 2, at least one second safety strip 9 is arranged in the third blank isolation belt 8, the second safety strip 9 is connected with a third conductive grid 10 and a fourth conductive grid 101 which are mutually separated, the first netlike metallized safety film and the T-shaped metallized safety film are mutually connected and overlapped to form an inner serial structure, as shown in fig. 3, or the first netlike metallized safety film and the second netlike metallized safety film are mutually connected and overlapped to form an inner serial structure, as shown in fig. 1 or 2, the inner serial structure is that the first netlike metallized safety film 1 and the second netlike metallized safety film 2 are mutually separated and are arranged in a serial structure.
The structure fully utilizes the superiority of the first reticular metallized safety film and the T-shaped metallized safety film in the explosion-proof performance that the first reticular metallized safety film and the T-shaped metallized safety film are connected with each other and overlapped to form an inner serial structure, or the first reticular metallized safety film and the second reticular metallized safety film are connected with each other and overlapped to form the inner serial structure, the self-healing breakdown occurs in a local area through designing the sizes of the first safety strip 7 and the second safety strip 9 of a proper grid, the first safety strip 7 or the second safety strip 9 of the part can be quickly fused, the first safety strip 7 or the second safety strip 9 of the part is disconnected with the surrounding conductive grid, the continuous expansion of the self-healing area is prevented, and the high-voltage arc discharge is prevented through designing the width of the proper first blank isolation belt 3 and the width of the third blank isolation belt 8, so that the reliability of the S3 explosion-proof of the capacitor is greatly improved; through setting up interior cluster structure, the effectual withstand voltage ability that improves the electric capacity prime, therefore this condenser is at rated voltage normal operating process in-process first safety strip 7 or second safety strip 9 in the security membrane can hardly fuse to guarantee that the life-span of this kind of condenser is longer more stable.
As shown in fig. 1, the edges of the first conductive mesh 4 and the second conductive mesh 41 are respectively provided with a metal sideband 5, a second blank isolation belt 6 is arranged between the mesh areas of the first conductive mesh 4 and the second conductive mesh 41, the second blank isolation belt 6 is provided with at least one first safety strip 7, and the metal sidebands 5 are respectively connected with the mesh areas of the first conductive mesh 4 and the second conductive mesh 41. When self-healing breakdown occurs in a local area, the first bumper 7 or the second bumper 9 at the local area can be quickly fused to disconnect the first bumper from surrounding conductive grids, so that the self-healing area is prevented from being enlarged continuously.
As shown in fig. 2 and 3, the edges on both sides of the second metallized security film 2 are provided with blank edges 11. The width of the third blank isolation belt 8 in the middle of the second metallized safety film 2 is smaller than that of the first blank isolation belt 3 in the middle of the first metallized safety film 1, so that the first metallized film and the second metallized safety film which are overlapped with each other are prevented from generating high-voltage arc discharge. The width of the second metallized safety film 2 is smaller than that of the first metallized safety film 1, so that the staggered edges are reserved on the two side edges of the first metallized film and the second metallized safety film which are overlapped with each other, the connection between metal spraying particles and a thin film metal coating is improved, and therefore end surface breakdown during an S3 explosion-proof test is prevented.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (3)
1. The utility model provides an interior cluster formula metallized safety film condenser, includes shell, capacitor element and draws forth the end and constitutes, and capacitor element is located the shell, draws forth the end and is located shell one end, capacitor element is that two-layer metallized safety film winds to form its characterized in that: the first metallized safety film (1) is a first netlike metallized safety film, a first blank isolation belt (3) is arranged at the middle position of the first metallized safety film (1), the first blank isolation belt (3) is used for mutually connecting a first conductive grid (4) and a second conductive grid (41) which are separated by the netlike metallized safety film, the second metallized safety film (2) is a second netlike metallized safety film or a T-shaped metallized safety film, a third blank isolation belt (8) is arranged at the middle position of the second metallized safety film (2), at least one second safety strip (9) is arranged at the third blank isolation belt (8), the second safety strips (9) are connected with a third conductive grid (10) and a fourth conductive grid (101) which are mutually separated, the first netlike metallized safety film and the second metallized safety film (2) are mutually connected and overlapped to form an inner serial structure, the width of the third blank isolation belt (8) in the middle of the second metallized safety film (2) is smaller than the first blank isolation belt (3) of the first metallized safety film (1), and the width of the second metallized safety film (2) is smaller than the width of the first metallized safety film (1).
2. The internal string metalized rupture disk capacitor as set forth in claim 1, wherein: the edges of the first conductive grids (4) and the second conductive grids (41) are respectively provided with a metal sideband (5), a second blank isolation belt (6) is arranged between grid areas of the first conductive grids (4) and the second conductive grids (41), at least one first safety strip (7) is arranged on the second blank isolation belt (6), and the metal sideband (5) is respectively connected with the grid areas of the first conductive grids (4) and the second conductive grids (41) through the first safety strip (7).
3. The internal string metalized rupture disk capacitor as set forth in claim 1, wherein: and blank edges (11) are arranged at the edges of the two sides of the second metallized safety film (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782625.6A CN108987109B (en) | 2018-07-17 | 2018-07-17 | Internal series metallized safety film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782625.6A CN108987109B (en) | 2018-07-17 | 2018-07-17 | Internal series metallized safety film capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108987109A CN108987109A (en) | 2018-12-11 |
| CN108987109B true CN108987109B (en) | 2023-11-24 |
Family
ID=64549294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810782625.6A Active CN108987109B (en) | 2018-07-17 | 2018-07-17 | Internal series metallized safety film capacitor |
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| Country | Link |
|---|---|
| CN (1) | CN108987109B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110197766A (en) * | 2019-05-06 | 2019-09-03 | 珠海格力新元电子有限公司 | Thin film capacitor |
| JP7472004B2 (en) * | 2020-11-30 | 2024-04-22 | Tdk株式会社 | Thin Film Capacitor |
| CN113496819A (en) * | 2021-08-02 | 2021-10-12 | 无锡市电力滤波有限公司 | Electrode structure of direct-current supporting capacitor |
| CN113643896B (en) * | 2021-09-10 | 2023-04-18 | 宁波海融电器有限公司 | Safety film of internal series capacitor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002231555A (en) * | 2001-01-31 | 2002-08-16 | Matsushita Electric Ind Co Ltd | Rolled film capacitor |
| CN2705871Y (en) * | 2004-05-27 | 2005-06-22 | 厦门法拉电子股份有限公司 | Metallized safety film capacitor |
| CN2916877Y (en) * | 2006-02-21 | 2007-06-27 | 高鹏 | Metallized safety film explosion-proof capacitor |
| CN102290233A (en) * | 2011-06-16 | 2011-12-21 | 铜陵其利电子材料有限公司 | BT composite safe explosion-proof metallized film |
| CN103077829A (en) * | 2013-01-30 | 2013-05-01 | 慈溪市日益电容器厂 | Inner-series type self-healing capacitor serially connected with inductor and preparing method thereof |
| CN208335993U (en) * | 2018-07-17 | 2019-01-04 | 广东丰明电子科技有限公司 | A kind of inner series metallized safety film capacitor |
-
2018
- 2018-07-17 CN CN201810782625.6A patent/CN108987109B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002231555A (en) * | 2001-01-31 | 2002-08-16 | Matsushita Electric Ind Co Ltd | Rolled film capacitor |
| CN2705871Y (en) * | 2004-05-27 | 2005-06-22 | 厦门法拉电子股份有限公司 | Metallized safety film capacitor |
| CN2916877Y (en) * | 2006-02-21 | 2007-06-27 | 高鹏 | Metallized safety film explosion-proof capacitor |
| CN102290233A (en) * | 2011-06-16 | 2011-12-21 | 铜陵其利电子材料有限公司 | BT composite safe explosion-proof metallized film |
| CN103077829A (en) * | 2013-01-30 | 2013-05-01 | 慈溪市日益电容器厂 | Inner-series type self-healing capacitor serially connected with inductor and preparing method thereof |
| CN208335993U (en) * | 2018-07-17 | 2019-01-04 | 广东丰明电子科技有限公司 | A kind of inner series metallized safety film capacitor |
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| Publication number | Publication date |
|---|---|
| CN108987109A (en) | 2018-12-11 |
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