CN112885604A - Multi-series metallized film foil type high-voltage capacitor - Google Patents
Multi-series metallized film foil type high-voltage capacitor Download PDFInfo
- Publication number
- CN112885604A CN112885604A CN202110009782.5A CN202110009782A CN112885604A CN 112885604 A CN112885604 A CN 112885604A CN 202110009782 A CN202110009782 A CN 202110009782A CN 112885604 A CN112885604 A CN 112885604A
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- China
- Prior art keywords
- film
- foil
- metallized film
- capacitor
- aluminum
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- 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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- 239000011888 foil Substances 0.000 title claims abstract description 66
- 239000003990 capacitor Substances 0.000 title claims abstract description 60
- 239000011104 metalized film Substances 0.000 title claims abstract description 46
- 239000010408 film Substances 0.000 claims abstract description 91
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- 239000012788 optical film Substances 0.000 claims abstract description 29
- 238000004804 winding Methods 0.000 claims abstract description 5
- 239000004743 Polypropylene Substances 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 3
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000002648 laminated material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material 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
- H01G4/33—Thin- or thick-film 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
- H01G4/002—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
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/236—Terminals leading through the housing, i.e. lead-through
-
- 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
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
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- 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 multi-series metallized film foil type high-voltage capacitor, which comprises an outgoing terminal, a shell and a capacitor core, wherein the capacitor core is formed by winding a core laminated material, the core laminated material comprises three aluminum foils, a light film and a metallized film, the metallized film comprises a base layer film and two metal films, the two metal films are arranged on the upper end surface of the base layer film, and the two metal films are sequentially arranged along the length direction of the base layer film and are not in contact with each other; the light film is arranged on the upper end face of the metallized film, and the length of the light film is the same as that of the metallized film; the three aluminum foils are arranged on the upper end face of the optical film, and are sequentially arranged along the length direction of the optical film and are not in contact with each other; of the two metal films, the left metal film covers the right end of the left aluminum foil and the left end of the middle aluminum foil, and the right metal film covers the right end of the middle aluminum foil and the left end of the right aluminum foil; the invention can be used in a high-voltage interval of 5KV-15KV, and has the capability of large current resistance.
Description
Technical Field
The invention relates to the field of capacitors, in particular to a multi-series metalized film foil type high-voltage capacitor.
Background
With the development of information industry, modern electronic equipment and instruments in the direction of miniaturization, light weight, low cost, high performance and the like, the metallized film capacitor has been widely valued and applied due to the remarkable characteristics of large voltage-resistant span, wide coverage, good self-healing performance, wide application field and the like. The metallized film capacitor is used as a basic electronic component, the market demand is increased year by year, the models, specifications and varieties of the metallized film capacitor are more and more, the use field is continuously widened, the technical grade of the product is continuously improved, and the technical contents of the process technology and production equipment in the manufacturing process are also continuously improved.
The existing metallized film capacitor comprises a leading-out terminal, a shell and a capacitor core, wherein the metallized film in the capacitor core is a continuous metal film evaporated on a polypropylene film, the withstand voltage value is generally low, the withstand voltage value is below 2KV, and the application range is limited. In order to increase the withstand voltage value, the reliability and the safety in use, the thickness of the capacitor dielectric film needs to be increased, so that the consumption of raw materials is large, the weight and the volume are large, and the miniaturization development of the metallized film capacitor is seriously hindered.
Disclosure of Invention
The invention aims to provide a multi-series metallized film foil type high-voltage capacitor, aiming at solving the problems that the conventional metallized film capacitor has low voltage withstanding value and is difficult to develop towards high voltage miniaturization.
The invention is realized by the following steps: a multi-series metallized film foil type high-voltage capacitor comprises leading-out terminals, a shell and a capacitor core, wherein one end face of the capacitor core is electrically connected with one leading-out terminal, the other end face of the capacitor core is electrically connected with the other leading-out terminal, the capacitor core is arranged in the shell and is formed by winding a core laminated material, the core laminated material comprises three aluminum foils, one optical film and one metallized film, the metallized film comprises a base film and two metal films, the two metal films are arranged on the upper end face of the base film, and the two metal films are sequentially arranged along the length direction of the base film and are not in contact with each other; the light film is arranged on the upper end face of the metallized film, and the length of the light film is the same as that of the metallized film; the three aluminum foils are arranged on the upper end face of the optical film, and are sequentially arranged along the length direction of the optical film and are not in contact with each other; in the two metal films, the left metal film covers the right end of the left aluminum foil and the left end of the middle aluminum foil, and the right metal film covers the right end of the middle aluminum foil and the left end of the right aluminum foil.
Further, the base layer film is a polypropylene film, and the metal film is an aluminum film.
Further, the base layer film is a polypropylene film, and the metal film is a zinc-aluminum film.
Further, the optical film is a polypropylene film.
Further, the left end of the aluminum foil on the left side is positioned on the left side of the optical film, and the right end of the aluminum foil on the right side is positioned on the right side of the optical film.
Furthermore, the leading-out terminal is a patch type terminal or a lead type terminal.
Further, the shell is a flame-retardant PBT shell.
Further, the shell is a cuboid or a cube which is cylindrical and has smooth transition edges.
Compared with the prior art, the invention has the beneficial effects that:
1. the structure of the capacitor core of the invention is equivalent to the structure that four capacitors are connected in series, and the voltage-resisting capability of the invention is enhanced by utilizing the principle of series voltage division, so that the invention can be used in a high-voltage interval of 5KV-15KV, and the invention has the capability of resisting large current.
2. The invention does not need to increase the thickness of the material for manufacturing the capacitor core and does not hinder the miniaturization development of the invention.
3. The shell is a flame-retardant PBT shell, so that the use safety of the flame-retardant PBT shell is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a capacitor core of a multiple series metallized film foil high voltage capacitor of the present invention;
FIG. 4 is a schematic diagram of the structure of the metallized film of the capacitor core of a multiple series metallized film foil high voltage capacitor of the present invention;
fig. 5 is a schematic diagram of the series principle of the capacitor core of a multiple series metallized film foil high voltage capacitor of the present invention.
In the figure: 1. a lead-out terminal; 2. a housing; 3. a capacitor core; 31. aluminum foil; 32. an optical film; 33. a metallized film; 331. a base layer film; 332. a metal film.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The first embodiment is as follows:
referring to fig. 1, fig. 3 and fig. 4, a multi-series metallized film foil type high voltage capacitor includes lead-out terminals 1, a housing 2 and a capacitor core 3, wherein one end surface of the capacitor core 3 is electrically connected to one lead-out terminal 1, the other end surface is electrically connected to the other lead-out terminal 1, and the capacitor core 3 is disposed in the housing 2. The shell 2 is a cuboid or a cube with smooth transition edges, and the leading-out terminal 1 can be of a lead terminal structure or a patch terminal structure. The capacitor core 3 is formed by winding a core laminate, the core laminate comprises three aluminum foils 31, an optical film 32 and a metallized film 33, and the optical film 32 is a polypropylene film. The metallized film 33 includes a base film 331 and two metal films 332, wherein the base film 331 is a polypropylene film, and the metal films 332 are aluminum films. Both the two metal films 332 are disposed on the upper end surface of the base film 331, and the two metal films 332 are sequentially disposed along the length direction of the base film 331 without contacting each other. The optical film 32 is provided on the upper end surface of the metallized film 33, and both have the same length. Three aluminum foils 31 are provided on the upper end surface of the optical film 32, and the three aluminum foils 31 are sequentially provided along the longitudinal direction of the optical film 32 without contacting each other. Of the two metal films 332, the left metal film 332 covers the right end of the left aluminum foil 31 and the left end of the middle aluminum foil 31, and the right metal film 332 covers the right end of the middle aluminum foil 31 and the left end of the right aluminum foil 31. The left end of the left aluminum foil 31 is positioned to the left of the optical film 32 and the right end of the right aluminum foil 31 is positioned to the right of the optical film 32.
Example two:
referring to fig. 2, 3 and 4, a multi-series metallized film foil type high voltage capacitor includes lead-out terminals 1, a housing 2 and a capacitor core 3, one end surface of the capacitor core 3 is electrically connected to one lead-out terminal 1, the other end surface is electrically connected to the other lead-out terminal 1, and the capacitor core 3 is disposed in the housing 2. The shell 2 is cylindrical, and the leading-out terminal 1 can be of a lead type terminal structure or a patch type terminal structure. The capacitor core 3 is formed by winding a core laminate, the core laminate comprises three aluminum foils 31, an optical film 32 and a metallized film 33, and the optical film 32 is a polypropylene film. The metallized film 33 includes a base film 331 and two metal films 332, wherein the base film 331 is a polypropylene film, and the metal films 332 are zinc-aluminum films. Both the two metal films 332 are disposed on the upper end surface of the base film 331, and the two metal films 332 are sequentially disposed along the length direction of the base film 331 without contacting each other. The optical film 32 is provided on the upper end surface of the metallized film 33, and both have the same length. Three aluminum foils 31 are provided on the upper end surface of the optical film 32, and the three aluminum foils 31 are sequentially provided along the longitudinal direction of the optical film 32 without contacting each other. Of the two metal films 332, the left metal film 332 covers the right end of the left aluminum foil 31 and the left end of the middle aluminum foil 31, and the right metal film 332 covers the right end of the middle aluminum foil 31 and the left end of the right aluminum foil 31. The left end of the left aluminum foil 31 is positioned to the left of the optical film 32 and the right end of the right aluminum foil 31 is positioned to the right of the optical film 32.
The working principle of the invention is as follows: as shown in fig. 5, the two metal films 332 are sequentially disposed along the longitudinal direction of the base film 331 without contacting each other. The three aluminum foils 31 are sequentially disposed along the longitudinal direction of the optical film 32 without contacting each other. In addition, of the two metal films 332, the left metal film 332 covers the right end of the left aluminum foil 31 and the left end of the middle aluminum foil 31, and the right metal film 332 covers the right end of the middle aluminum foil 31 and the left end of the right aluminum foil 31. The structure of the capacitor core 3 is equivalent to a structure that four capacitors C1, C2, C3 and C4 are connected in series, the withstand voltage capability of the capacitor core is enhanced by using a series voltage division principle, the capacitor core can be used in a high-voltage interval of 5-15 KV, and the capacitor core has the capability of resisting large current.
The invention does not need to increase the thickness of the material for manufacturing the capacitor core 3, thereby not causing obstruction to the miniaturization development of the invention.
In the embodiment, the shell 2 is a flame-retardant PBT shell, so that the use safety of the flame-retardant PBT shell is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A multi-series metallized film foil type high-voltage capacitor comprises an outgoing terminal (1), a shell (2) and a capacitor core (3), one end face of the capacitor core (3) is electrically connected with one leading-out terminal (1), the other end face is electrically connected with the other leading-out terminal (1), the capacitor core (3) is arranged in the shell (2), it is characterized in that the capacitor core (3) is formed by winding a core laminate, the core laminate comprises three aluminum foils (31), a light film (32) and a metallized film (33), the metallized film (33) comprises a base layer film (331) and two metal films (332), wherein the two metal films (332) are arranged on the upper end face of the base layer film (331), and the two metal films (332) are sequentially arranged along the length direction of the base layer film (331) and are not in contact with each other; the light film (32) is arranged on the upper end face of the metallized film (33), and the lengths of the light film and the metallized film are the same; the three aluminum foils (31) are arranged on the upper end face of the optical film (32), and the three aluminum foils (31) are sequentially arranged along the length direction of the optical film (32) and are not in contact with each other; in the two metal films (332), the left metal film (332) covers the right end of the left aluminum foil (31) and the left end of the middle aluminum foil (31), and the right metal film (332) covers the right end of the middle aluminum foil (31) and the left end of the right aluminum foil (31).
2. The multiple-series metallized film foil high-voltage capacitor as claimed in claim 1, wherein said base film (331) is a polypropylene film and said metal film (332) is an aluminum film.
3. The multiple-series metallized film foil high-voltage capacitor as claimed in claim 1, wherein said base film (331) is a polypropylene film and said metal film (332) is a zinc-aluminum film.
4. A multiple series metallized film foil high voltage capacitor as claimed in claim 1, characterized in that said optical film (32) is a polypropylene film.
5. A multiple series metallized film foil high voltage capacitor as claimed in claim 1, characterized in that the left end of the left aluminum foil (31) is located on the left side of the optical film (32) and the right end of the right aluminum foil (31) is located on the right side of the optical film (32).
6. A multiple series metallized film foil high-voltage capacitor as claimed in any one of claims 1 to 5, characterized in that said outgoing terminal (1) is a patch terminal or a lead terminal.
7. A multiple series metallized film foil high-voltage capacitor according to any one of claims 1 to 5, characterized in that the outer shell (2) is a flame retardant PBT outer shell.
8. A multiple series metallized film foil high-voltage capacitor as claimed in claim 7, characterized in that said outer shell (2) is cylindrical, cuboid or cube with smooth edge transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110009782.5A CN112885604A (en) | 2021-01-05 | 2021-01-05 | Multi-series metallized film foil type high-voltage capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110009782.5A CN112885604A (en) | 2021-01-05 | 2021-01-05 | Multi-series metallized film foil type high-voltage capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112885604A true CN112885604A (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110009782.5A Pending CN112885604A (en) | 2021-01-05 | 2021-01-05 | Multi-series metallized film foil type high-voltage capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112885604A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777839A (en) * | 1991-11-08 | 1998-07-07 | Rohm Co., Ltd. | Capacitor using dielectric film |
| CN201796732U (en) * | 2010-06-22 | 2011-04-13 | 四川中星电子有限责任公司 | Novel five-string high-frequency high-voltage heavy-current membrane foil type capacitor |
| CN208400718U (en) * | 2018-07-03 | 2019-01-18 | 铜陵华星天束科技有限公司 | The high-voltage metallized thin-film capacitor core of shelf depreciation is reduced by plural serial stage |
| CN109786110A (en) * | 2019-02-03 | 2019-05-21 | 佛山市欣源电子股份有限公司 | A kind of two-sided metallization string data high current thin film capacitor |
| CN211907255U (en) * | 2020-04-17 | 2020-11-10 | 深圳市纬迪实业发展有限公司 | High-voltage film capacitor |
-
2021
- 2021-01-05 CN CN202110009782.5A patent/CN112885604A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777839A (en) * | 1991-11-08 | 1998-07-07 | Rohm Co., Ltd. | Capacitor using dielectric film |
| CN201796732U (en) * | 2010-06-22 | 2011-04-13 | 四川中星电子有限责任公司 | Novel five-string high-frequency high-voltage heavy-current membrane foil type capacitor |
| CN208400718U (en) * | 2018-07-03 | 2019-01-18 | 铜陵华星天束科技有限公司 | The high-voltage metallized thin-film capacitor core of shelf depreciation is reduced by plural serial stage |
| CN109786110A (en) * | 2019-02-03 | 2019-05-21 | 佛山市欣源电子股份有限公司 | A kind of two-sided metallization string data high current thin film capacitor |
| CN211907255U (en) * | 2020-04-17 | 2020-11-10 | 深圳市纬迪实业发展有限公司 | High-voltage film capacitor |
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Application publication date: 20210601 |
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