JPS6127164Y2 - - Google Patents
Info
- Publication number
- JPS6127164Y2 JPS6127164Y2 JP2631781U JP2631781U JPS6127164Y2 JP S6127164 Y2 JPS6127164 Y2 JP S6127164Y2 JP 2631781 U JP2631781 U JP 2631781U JP 2631781 U JP2631781 U JP 2631781U JP S6127164 Y2 JPS6127164 Y2 JP S6127164Y2
- Authority
- JP
- Japan
- Prior art keywords
- film
- electrode foil
- width
- capacitor
- polypropylene
- 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.)
- Expired
Links
- 239000011888 foil Substances 0.000 claims description 26
- -1 polypropylene Polymers 0.000 claims description 23
- 239000003990 capacitor Substances 0.000 claims description 20
- 239000004743 Polypropylene Substances 0.000 claims description 19
- 229920001155 polypropylene Polymers 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【考案の詳細な説明】
本考案は絶縁紙のかわりにプラスチツクフイル
ムを誘電体として、これに２枚の電極箔を重ねて
巻回する、いわゆる巻回型のオールフイルムコン
デンサの改良に係わるものである。[Detailed description of the invention] This invention relates to the improvement of a so-called wound-type all-film capacitor, in which a plastic film is used as a dielectric material instead of insulating paper, and two electrode foils are layered and wound around the plastic film. be.
このようなオールフイルムコンデンサの一例は
第１図にコンデンサの一部断面をもつて示され
る。 An example of such an all-film capacitor is shown in FIG. 1 with a partial cross-section of the capacitor.
１は例えばアルミニユム箔のような電極箔であ
り、２は例えば、ポリプロピレンフイルムを３枚
重ねたようなフイルム層である。通常このフイル
ム層の幅は電極箔巾よりも広くとられており、コ
ンデンサとしての巻回を終つたものでは、電極箔
１の端部３は電極箔１をはさむフイルム層２のつ
くる極めてわずかな間隙をもつてのみコンデンサ
外と通ずるのみである。 Reference numeral 1 is an electrode foil such as aluminum foil, and 2 is a film layer such as three layers of polypropylene film. Normally, the width of this film layer is wider than the width of the electrode foil, and in a capacitor that has been wound, the end 3 of the electrode foil 1 has a very small width formed by the film layer 2 sandwiching the electrode foil 1. It communicates with the outside of the capacitor only through a gap.
このように巻回されたコンデンサに電極端部３
に絶縁油を含浸させる場合、前述のような構成と
なつているため、絶縁油の充填が十分になされ
ず、電極端部３での絶縁耐力が絶縁油の絶縁耐力
で決定されることからするとその耐力は低いもの
とならざるを得ない。 Connect the electrode end 3 to the capacitor wound in this way.
When the electrode is impregnated with insulating oil, due to the structure described above, the insulating oil is not filled sufficiently, and the dielectric strength at the electrode end 3 is determined by the dielectric strength of the insulating oil. Its durability must be low.
これに対して本考案においては前述の複数枚の
ポリプロピレンフイルムよりなるフイルム層２の
うち金属の電極箔１に接するポリプロピレンフイ
ルムの巾を電極箔１の巾よりも狭巾とし、中間の
ポリプロピレンフイルムの巾は前記電極箔１の巾
よりも広巾としてこれらの電極箔１およびポリプ
ロピレンフイルムを重ねて巻回してコンデンサを
形成し、そのあと絶縁油よりも絶縁耐力が高く、
ポリプロピレンフイルムよりも融点の低い固体絶
縁体を含浸させたコンデンサを提供するものであ
る。 On the other hand, in the present invention, the width of the polypropylene film in contact with the metal electrode foil 1 is made narrower than the width of the electrode foil 1 among the film layer 2 made up of the plurality of polypropylene films described above, and the width of the polypropylene film in the middle The width is wider than the width of the electrode foil 1, and the electrode foil 1 and the polypropylene film are layered and wound to form a capacitor, and then the dielectric strength is higher than that of the insulating oil.
The present invention provides a capacitor impregnated with a solid insulator having a lower melting point than polypropylene film.
以下第２図に示す実施例について説明する。 The embodiment shown in FIG. 2 will be described below.
第２図は電極箔およびポリプロピレンフイルム
を重ねて巻回した本考案の一実施例の一部断面を
示している。図において、１はアルミニウム箔よ
りなる電極箔である。２ａはそれぞれ電極箔１に
接するポリプロピレンフイルムであり、その巾は
電極箔１の巾よりも狭巾とされる。また２ｂは前
記ポリプロピレンフイルム２ａの間に重ね合わさ
れたポリプロピレンフイルムであり、その巾は前
記電極箔１の巾よりも広巾とされる。 FIG. 2 shows a partial cross section of an embodiment of the present invention in which an electrode foil and a polypropylene film are wound in an overlapping manner. In the figure, 1 is an electrode foil made of aluminum foil. 2a is a polypropylene film in contact with the electrode foil 1, and its width is narrower than the width of the electrode foil 1. Further, 2b is a polypropylene film superimposed between the polypropylene films 2a, and its width is wider than the width of the electrode foil 1.
以上説明したポリプロピレン狭巾フイルム２ａ
に広巾フイルム２ｂ、狭巾２ａ、電極箔１を重
ね、更にこの上にポリプロピレン狭巾フイルム２
ａ広巾フイルム２ｂ、狭巾フイルム２ａ、電極箔
１を重ねて適当回数かたく巻回すれば、コンデン
サが形成される。なお図示していないが、巻回中
において巾方向に接続リード線が挿入される。 Polypropylene narrow width film 2a explained above
The wide film 2b, the narrow film 2a, and the electrode foil 1 are stacked on top of each other, and then the polypropylene narrow film 2 is placed on top of this.
A capacitor is formed by stacking the wide film 2b, the narrow film 2a, and the electrode foil 1 and tightly winding them an appropriate number of times. Although not shown, a connection lead wire is inserted in the width direction during winding.
このように形成されたコンデンサは図において
明らかなように第１図に説明したものと対比し
て、電極箔１の端部４よりその内側両面におい
て、広巾フイルム２ｂとの間に間隙を形成するこ
とになる。 As is clear from the figure, in contrast to the capacitor described in FIG. 1, the capacitor formed in this manner has a gap formed between the end 4 of the electrode foil 1 and the wide film 2b on both inner surfaces thereof. It turns out.
本考案においてはこのように巻回されたコンデ
ンサ全体またはすくなくとも両側端部を例えば、
溶融状態にしたポリエチレンの中に浸漬する。こ
の際ポリプロピレンの溶融温度はポリエチレンの
それよりも高く、従つて含浸させることによつて
ポリプロピレンフイルムが損われることはなく、
ポリエチレンはすでに説明した電極箔の端部４を
包んで十分含浸され、冷却とともにポリエチレン
による固体絶縁５を形成し、絶縁耐力を向上させ
ることができる。 In the present invention, the entire capacitor wound in this way or at least both end portions is, for example,
Immerse in molten polyethylene. At this time, the melting temperature of polypropylene is higher than that of polyethylene, so the impregnation does not damage the polypropylene film.
The polyethylene is sufficiently impregnated around the end portion 4 of the electrode foil described above, and upon cooling, a solid insulation 5 of polyethylene is formed, and the dielectric strength can be improved.
従つて本考案のコンデンサによれば、コンデン
サ素子内部に絶縁油充填状態でなくとも十分使用
に耐えるコンデンサが得られる。 Therefore, according to the capacitor of the present invention, it is possible to obtain a capacitor that can be used satisfactorily even if the inside of the capacitor element is not filled with insulating oil.
第１図は従来の巻回型フイルムコンデンサの一
例を一部断面をもつて示す。第２図は本考案の実
施例の巻回型フイルムコンデンサを一部断面をも
つて示す。
１……電極箔、２……ポリプロピレンフイルム
層、２ａ，２ｂ……ポリプロピレンフイルム、
３，４……電極箔の端部、５……固体絶縁。
FIG. 1 shows an example of a conventional wound film capacitor with a partial cross section. FIG. 2 shows a partially sectional view of a wound film capacitor according to an embodiment of the present invention. 1... Electrode foil, 2... Polypropylene film layer, 2a, 2b... Polypropylene film,
3, 4...End of electrode foil, 5...Solid insulation.
Claims (1)
プロピレンフイルムを有する巻回型フイルムコン
デンサにおいて、電極箔に接するポリプロピレン
フイルムの巾を電極箔の巾より狭巾としてフイル
ムコンデンサを形成し、前記フイルムコンデンサ
のすくなくとも両側部に、常温で固体であつて絶
縁油より絶縁耐力が高く、ポリプロピレンフイル
ムより融点が低い絶縁体を溶融して含浸させ、電
極箔端部に絶縁を形成してなるフイルムコンデン
サ。 In a wound type film capacitor having at least three or more polypropylene films between electrode foils, the film capacitor is formed by making the width of the polypropylene film in contact with the electrode foil narrower than the width of the electrode foil, and A film capacitor in which at least both sides are melted and impregnated with an insulator that is solid at room temperature, has a higher dielectric strength than insulating oil, and has a lower melting point than polypropylene film, and forms insulation at the ends of the electrode foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2631781U JPS6127164Y2 (en) | 1981-02-25 | 1981-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2631781U JPS6127164Y2 (en) | 1981-02-25 | 1981-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57140728U JPS57140728U (en) | 1982-09-03 |
| JPS6127164Y2 true JPS6127164Y2 (en) | 1986-08-13 |
Family
ID=29824030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2631781U Expired JPS6127164Y2 (en) | 1981-02-25 | 1981-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6127164Y2 (en) |
-
1981
- 1981-02-25 JP JP2631781U patent/JPS6127164Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57140728U (en) | 1982-09-03 |
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