JP5548343B2 - Metallized film capacitors - Google Patents

Metallized film capacitors Download PDF

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JP5548343B2
JP5548343B2 JP2008117011A JP2008117011A JP5548343B2 JP 5548343 B2 JP5548343 B2 JP 5548343B2 JP 2008117011 A JP2008117011 A JP 2008117011A JP 2008117011 A JP2008117011 A JP 2008117011A JP 5548343 B2 JP5548343 B2 JP 5548343B2
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electrode
film
insulating
margin
divided
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JP2009267217A (en
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千一 小笹
浩明 牧添
克之 平上
公明 菊池
隆平 小山
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Shizuki Electric Co Inc
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    • 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
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/14—Organic dielectrics
    • H01G4/145—Organic dielectrics vapour deposited
    • 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
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/14—Organic dielectrics
    • H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Description

この発明は、誘電体フィルムに蒸着電極を形成した金属化フィルムを巻回または積層してなる金属化フィルムコンデンサに関するものである。   The present invention relates to a metallized film capacitor formed by winding or laminating a metallized film in which a vapor deposition electrode is formed on a dielectric film.

保安機能を持たせた従来の金属化フィルムコンデンサの一例を、図４及び図５に示している（例えば、特許文献１参照）。このコンデンサは、一対となる第１及び第２金属化フィルム３１Ａ、３１Ｂを重ね合わせた構造のものである。両金属化フィルム３１Ａ、３１Ｂは、略同様なものであるため、ここでは便宜上、第１金属化フィルム３１Ａについて説明する。この第１金属化フィルム３１Ａには、その長手方向に沿う一側部に絶縁マージン３２が形成されており、絶縁マージン３２とは反対側の側部は、メタリコン電極３０（図５参照）の形成される接続部３３となされている。また、第１金属化フィルム３１Ａの接続部３３の近傍には、絶縁スリット３４が長手方向に断続的に設けられていて、絶縁スリット３４、３４間にヒューズ部３５が形成されている。そして、この断続的に設けられた絶縁スリット３４の中央部と絶縁マージン３２とを結ぶように幅方向に延びる分割スリット３６を、長手方向に所定の間隔で並設することによって、各金属化フィルム３１Ａに複数の分割電極３７が形成されている。そして、このような構造の第１金属化フィルム３１Ａと第２金属化フィルム３１Ｂとを、絶縁マージン３２が互いに逆の側部に位置するように重ね合わせて、巻回または積層することによって金属化フィルムコンデンサが形成されている。また、特に良好な保安性を要求されるコンデンサにおいては、その容量を形成する有効電極部の蒸着電極膜抵抗を高くし、接続部３３の蒸着電極膜抵抗を低くしたヘビーエッジ構造が採用されている。
特開２０００−１２３６８号公報 An example of a conventional metallized film capacitor having a security function is shown in FIGS. 4 and 5 (see, for example, Patent Document 1). This capacitor has a structure in which a pair of first and second metallized films 31A and 31B are overlapped. Since both metallized films 31A and 31B are substantially the same, here, for convenience, the first metallized film 31A will be described. In this first metallized film 31A, an insulating margin 32 is formed on one side along the longitudinal direction, and a metallicon electrode 30 (see FIG. 5) is formed on the side opposite to the insulating margin 32. The connection part 33 is made. Further, in the vicinity of the connection portion 33 of the first metallized film 31 </ b> A, an insulation slit 34 is intermittently provided in the longitudinal direction, and a fuse portion 35 is formed between the insulation slits 34 and 34. Then, by dividing the slits 36 extending in the width direction so as to connect the center portion of the insulating slits 34 provided intermittently and the insulating margin 32, the metallized films are arranged in parallel in the longitudinal direction at predetermined intervals. A plurality of divided electrodes 37 are formed on 31A. Then, the first metallized film 31A and the second metallized film 31B having such a structure are overlapped so that the insulating margins 32 are located on opposite sides, and are wound or stacked to be metallized. A film capacitor is formed. In addition, in a capacitor that requires particularly good security, a heavy edge structure is adopted in which the vapor deposition electrode film resistance of the effective electrode portion forming the capacitance is increased and the vapor deposition electrode film resistance of the connection portion 33 is decreased. Yes.
JP 2000-12368 A

ところで、上記特許文献１に記載された金属化フィルムコンデンサにおいては、使用される条件に応じてヒューズ動作特性を調整する必要があるが、通常行われるヒューズ幅や蒸着金属膜抵抗の調整では、コンデンサの損失特性・信頼性に対する影響が大きいため、過剰なヒューズ動作による容量低下、自己発熱過多による熱破壊、ヒューズ動作不良による短絡などを招く危険性があり、その調整は容易ではなかった。また、ヘビーエッジ構造のものは、損失特性の影響が大きくなるためその調整が特に困難であった。   By the way, in the metallized film capacitor described in the above-mentioned Patent Document 1, it is necessary to adjust the fuse operating characteristics according to the conditions to be used. The loss characteristics and reliability of the battery are large, and there is a risk of capacity loss due to excessive fuse operation, thermal destruction due to excessive self-heating, short circuit due to defective fuse operation, etc., and adjustment is not easy. Further, the heavy edge structure is particularly difficult to adjust because the influence of the loss characteristic becomes large.

この発明は、上記従来の問題点を解決するためになされたものであって、その目的は、ヒューズ動作性を調整するために、従来のようにコンデンサの損失特性や信頼性に影響を及ぼすヒューズ幅や蒸着電極膜抵抗の調整を行わなくてもヒューズ動作性の改善が可能であり、そのため高い信頼性と良好な保安性を発揮することが可能な金属化フィルムコンデンサを提供することにある。   The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to adjust the fuse operability in order to adjust the fuse operability as in the prior art. An object of the present invention is to provide a metallized film capacitor capable of improving the fuse operability without adjusting the width and the deposited electrode film resistance, and thus exhibiting high reliability and good security.

そこで、この発明の金属化フィルムコンデンサは、誘電体フィルムの一方側に第１電極膜３Ａを、また誘電体フィルムの他方側に第２電極膜３Ｂをそれぞれ配置してなり、上記第１電極膜３Ａは、容量を形成する有効電極部となる蒸着電極を有し、その長手方向に沿う一側部に絶縁マージン４を、また絶縁マージン４の反対側の他側部にメタリコン電極１０が形成される接続部５を設けた構造であって、上記有効電極部のほぼ中央部に絶縁スリット７を長手方向に設けると共に、幅方向に延びる分割マージン６を設けることにより上記有効電極部を所定の間隔で長手方向に分割して絶縁スリット７よりも接続部５側に、上記絶縁スリット７から接続部５までヒューズ部を介することなく連続する第２分割電極１２を形成し、さらに上記絶縁スリット７よりも絶縁マージン４側において上記分割マージン６間に幅方向に延びる区画マージン８を設けてその領域を所定の間隔で長手方向に分割することにより、上記絶縁スリット７から絶縁マージン４までヒューズ部を介することなく連続する第１分割電極１１を形成し、上記第２分割電極１２の長手方向の全幅とメタリコン電極１０とを直接接続するとともに、上記第２分割電極１２と各第１分割電極１１とを絶縁スリット７に設けたヒューズ部９によって接続した構造であり、また、第２電極膜３Ｂは、第１電極膜３Ａと略同一構造のものであって、絶縁マージン４側と接続部５側とを互いに逆にして配置した構造であり、一方の第１分割電極１１と他方の第２分割電極１２とが誘電体フィルムを介して対向するように構成したことを特徴としている。 Therefore, the metallized film capacitor according to the present invention has the first electrode film 3A disposed on one side of the dielectric film and the second electrode film 3B disposed on the other side of the dielectric film. 3A has a vapor deposition electrode which becomes an effective electrode part for forming a capacitor, and an insulating margin 4 is formed on one side along the longitudinal direction, and a metallicon electrode 10 is formed on the other side opposite to the insulating margin 4. The connection portion 5 is provided, and an insulating slit 7 is provided in the longitudinal direction at a substantially central portion of the effective electrode portion, and a division margin 6 extending in the width direction is provided, thereby separating the effective electrode portion at a predetermined interval. Then, a second divided electrode 12 that is continuous from the insulating slit 7 to the connecting portion 5 without a fuse portion is formed on the side of the connecting portion 5 from the insulating slit 7, and further, the insulating slit is further formed. By providing a partition margin 8 extending in the width direction between the divided margins 6 on the insulating margin 4 side of the base 7 and dividing the region in the longitudinal direction at a predetermined interval, the insulating slit 7 to the insulating margin 4 are provided. The first divided electrode 11 that is continuous without using the fuse portion is formed, the full width in the longitudinal direction of the second divided electrode 12 is directly connected to the metallicon electrode 10, and the second divided electrode 12 and each first divided electrode are connected. The electrode 11 is connected by a fuse portion 9 provided in the insulating slit 7, and the second electrode film 3B has substantially the same structure as the first electrode film 3A and is connected to the insulating margin 4 side. This is a structure in which the portion 5 side is arranged opposite to each other, and is configured such that one first divided electrode 11 and the other second divided electrode 12 face each other with a dielectric film interposed therebetween. It is characterized.

また、上記接続部５の蒸着電極膜厚は、有効電極部の蒸着電極膜厚よりも厚くしていることを特徴とする。さらに、上記第１電極膜３Ａのヒューズ部９と第２電極膜３Ｂのヒューズ部９とは、絶縁スリット７の延設方向とは交差する方向に位置をずらせて配置してあることを特徴としている。   Further, the thickness of the vapor deposition electrode of the connecting portion 5 is larger than the thickness of the vapor deposition electrode of the effective electrode portion. Further, the fuse part 9 of the first electrode film 3A and the fuse part 9 of the second electrode film 3B are arranged with their positions shifted in a direction intersecting with the extending direction of the insulating slit 7. Yes.

上記金属化フィルムコンデンサは、第１誘電体フィルム２Ａに第１電極膜３Ａを、第２誘電体フィルム２Ｂに第２電極膜３Ｂをそれぞれ形成してこれらを重ね合わせたり、誘電体フィルムの両面に第１電極膜３Ａと第２電極膜３Ｂとを形成した両面金属化フィルムと、金属が蒸着されていない誘電体フィルムとを重ね合わせたりすることによって形成できる。   In the metallized film capacitor, the first electrode film 3A is formed on the first dielectric film 2A, and the second electrode film 3B is formed on the second dielectric film 2B. It can be formed by superimposing a double-sided metallized film on which the first electrode film 3A and the second electrode film 3B are formed and a dielectric film on which no metal is deposited.

この発明の金属化フィルムコンデンサにおいて、ヒューズ動作性を調節する場合には、ヒューズ部９の幅ｗ、及びヒューズ部９の蒸着電極膜抵抗を一定に保持した状態において、第２分割電極１２の長手方向の幅Ｗ（及びそれに伴って、第１分割電極１１の長手方向の幅）を変更すればよい。このような変更作業によって、ヒューズ部９での電流密度を調整できるので、ヒューズ動作性を調整できる。従来のように、コンデンサの損失特性や信頼性に影響を及ぼすヒューズ幅ｗや蒸着電極膜抵抗の調整を行わなくてもヒューズ動作性の改善が可能であるため、高い信頼性と良好な保安性を発揮することが可能な金属化フィルムコンデンサを提供できる。   In the metallized film capacitor of the present invention, when adjusting the fuse operability, the longitudinal length of the second divided electrode 12 is maintained while the width w of the fuse portion 9 and the vapor deposition electrode film resistance of the fuse portion 9 are kept constant. The width W in the direction (and the width in the longitudinal direction of the first divided electrode 11) may be changed. By such a changing operation, the current density in the fuse portion 9 can be adjusted, so that the fuse operability can be adjusted. As in the past, the fuse operability can be improved without adjusting the fuse width w and the deposition electrode film resistance, which affect the loss characteristics and reliability of the capacitor, so high reliability and good security A metallized film capacitor capable of exhibiting the above can be provided.

また、ヘビーエッジ構造のコンデンサにおいては、損失特性の影響を特に大きく受けるため、上記方法により、ヒューズ動作の調整を行えば、高い信頼性と保安性を確保するのに一段と効果的である。さらに、第１電極膜３Ａのヒューズ部９と第２電極膜３Ｂのヒューズ部９とを、絶縁スリット７の延設方向とは交差する方向に位置をずらせて配置しているので、発熱するヒューズ部９が分散配置されることになり、このため、コンデンサの温度上昇を抑制できる。   In addition, since the heavy edge capacitor is greatly affected by the loss characteristic, adjusting the fuse operation by the above method is more effective in securing high reliability and security. Further, since the fuse portion 9 of the first electrode film 3A and the fuse portion 9 of the second electrode film 3B are arranged so as to be shifted in the direction intersecting with the extending direction of the insulating slit 7, a fuse that generates heat. Since the portions 9 are arranged in a distributed manner, an increase in the temperature of the capacitor can be suppressed.

次に、この発明の金属化フィルムコンデンサの具体的な実施の形態について、図面を参照しつつ詳細に説明する。この発明の一実施形態に係る金属化フィルムコンデンサは、図１及び図２に示すように、一対となる第１及び第２金属化フィルム１Ａ、１Ｂを重ね合わせた構造のものである。両金属化フィルム１Ａ、１Ｂは、第１及び第２誘電体フィルム２Ａ、２Ｂに、第１及び第２電極膜３Ａ、３Ｂを蒸着したもので、両者は、略同様なものであるため、ここでは便宜上、第１金属化フィルム１Ａについて説明する。第１電極膜３Ａは、容量を形成する有効電極部となる蒸着電極を有し、その長手方向に沿う一側部に絶縁マージン（蒸着電極のない部分）４を、また絶縁マージン４の反対側の他側部にメタリコン電極１０（図２参照）が接続される接続部５がそれぞれ形成されている。また、第１電極膜３Ａには、幅方向に延びる分割マージン（蒸着金属のない部分）６が形成され、第１電極膜３Ａは、長手方向に所定間隔で分割されている。さらに、上記有効電極部のほぼ中央部に、絶縁スリット（蒸着金属のない部分）７が長手方向に所定の間隔をおいて断続的に設けられている。この絶縁スリット７は、３個毎に、その中央部が、分割マージン６と交差している。また、残り２個の絶縁スリット７の中央部と絶縁マージン４との間には、幅方向に延びる区画マージン（蒸着金属のない部分）８が形成されており、分割マージン６で分割された蒸着電極のうち、絶縁スリット７よりも絶縁マージン４側の部分が、さらに３個に区画されている。そして、絶縁スリット６、６間にヒューズ部９が形成されている。なお、このような状態は、絶縁スリット７が連続的に形成され、絶縁スリット７の適所に蒸着金属によってヒューズ部９が形成されているともいえる。   Next, specific embodiments of the metallized film capacitor of the present invention will be described in detail with reference to the drawings. The metallized film capacitor according to one embodiment of the present invention has a structure in which a pair of first and second metallized films 1A and 1B are overlapped as shown in FIGS. Both metallized films 1A and 1B are obtained by vapor-depositing the first and second electrode films 3A and 3B on the first and second dielectric films 2A and 2B, both of which are substantially the same. For convenience, the first metallized film 1A will be described. The first electrode film 3 </ b> A has a vapor deposition electrode serving as an effective electrode portion for forming a capacitance, and has an insulation margin (a portion without a vapor deposition electrode) 4 on one side along the longitudinal direction and the opposite side of the insulation margin 4. Connection portions 5 to which the metallicon electrodes 10 (see FIG. 2) are connected are formed on the other side portions, respectively. Further, the first electrode film 3A is formed with a division margin (a portion without vapor deposition metal) 6 extending in the width direction, and the first electrode film 3A is divided at a predetermined interval in the longitudinal direction. Furthermore, insulating slits (portions without vapor deposited metal) 7 are provided intermittently at predetermined intervals in the longitudinal direction at substantially the center of the effective electrode portion. The center portion of each of the insulating slits 7 intersects the division margin 6 every three. Further, a partition margin (a portion without vapor deposition metal) 8 extending in the width direction is formed between the central portion of the remaining two insulation slits 7 and the insulation margin 4, and the vapor deposition divided by the division margin 6. Of the electrodes, the portion closer to the insulation margin 4 than the insulation slit 7 is further divided into three. A fuse portion 9 is formed between the insulating slits 6 and 6. In this state, it can be said that the insulating slit 7 is continuously formed, and the fuse portion 9 is formed by vapor deposition metal at an appropriate position of the insulating slit 7.

上記構造を有する結果、絶縁スリット７から絶縁マージン４に向かう側には、所定面積の第１分割電極１１が長手方向に配置され、また、絶縁スリット７から接続部５に向かう側には上記第１分割電極１１よりも広い面積の第２分割電極１２が長手方向に配置された構造となる。また、第２電極膜３Ｂは、第１電極膜３Ａとは絶縁マージン４側と接続部５側とを互いに逆にして配置した構造であり、第１金属化フィルム１Ａと第２金属化フィルム１Ｂとを重ね合わせて巻回、あるいは積層することによって金属化フィルムコンデンサが形成される。   As a result of having the above structure, a first divided electrode 11 having a predetermined area is disposed in the longitudinal direction on the side from the insulating slit 7 toward the insulating margin 4, and on the side from the insulating slit 7 toward the connecting portion 5, The second divided electrode 12 having a larger area than the one divided electrode 11 is arranged in the longitudinal direction. The second electrode film 3B has a structure in which the insulating margin 4 side and the connection part 5 side are arranged opposite to each other with respect to the first electrode film 3A, and the first metallized film 1A and the second metallized film 1B. Are stacked and wound or laminated to form a metallized film capacitor.

上記実施形態の金属化フィルムコンデンサにおいては、自己保安機能を有しながら、ヒューズ部９の発熱を抑制できる。すなわち、メタリコン電極１０に近い部分には大きな電流が流れ、離れるほど電流は小さくなっていくものであるため、広い面積の第２分割電極１２をメタリコン電極１０側に配置することで、大きな電流に対処可能となり、それよりも絶縁マージン４側にヒューズ部９、第１分割電極１１を配置しているので、流れる電流によるヒューズ部９の発熱を少なくでき、温度上昇を抑制できる。また、この実施形態においては、図２に示しているように、第1電極膜３Ａと第２電極膜３Ｂとに設けられるヒューズ部９（及び絶縁スリット７）は、両電極３Ａ、３Ｂの対向方向（図において上下方向）には重ならず、金属化フィルム１Ａ、１Ｂの幅方向（絶縁スリット７の延設方向とは交差する方向）に位置をずらせて（離して）配置しているが、これは、ヒューズ部９での発熱を分散させて熱の集中を防止するためである。このような構成を採用することによってもコンデンサの温度上昇を抑制している。   In the metallized film capacitor of the above embodiment, heat generation of the fuse portion 9 can be suppressed while having a self-security function. That is, a large current flows in a portion close to the metallicon electrode 10, and the current decreases as the distance from the metallicon electrode 10 increases. Since the fuse portion 9 and the first divided electrode 11 are arranged on the insulation margin 4 side than that, the heat generation of the fuse portion 9 due to the flowing current can be reduced, and the temperature rise can be suppressed. Further, in this embodiment, as shown in FIG. 2, the fuse portion 9 (and the insulating slit 7) provided in the first electrode film 3A and the second electrode film 3B is opposed to both the electrodes 3A and 3B. Although it does not overlap in the direction (vertical direction in the figure), the metallized films 1A and 1B are arranged so as to be shifted (separated) in the width direction (direction intersecting with the extending direction of the insulating slit 7). This is to prevent heat concentration by dispersing heat generated in the fuse portion 9. By adopting such a configuration, the temperature rise of the capacitor is also suppressed.

上記実施形態の金属化フィルムコンデンサにおいて、その使用される条件に合わせてヒューズ動作性を調節する必要がある場合には、ヒューズ部９の幅ｗ、及びヒューズ部９の蒸着電極膜抵抗を一定に保持した状態において、第２分割電極１２の長手方向の幅Ｗ（及びそれに伴って、第１分割電極１１の長手方向の幅）を変更すればよい。また、ヒューズ部９の幅ｗ、及びヒューズ部９の蒸着電極膜抵抗を一定に保持した状態において、第２分割電極１２の長手方向の幅Ｗ、及びそれに伴って、第１分割電極１１の長手方向の幅と第１分割電極１１の個数を変更すればよい。このような変更作業によって、ヒューズ部９での電流密度を調整できるので、ヒューズ動作性を調整できる。また、このように、コンデンサの損失特性や信頼性に影響を及ぼすヒューズ幅ｗや蒸着電極膜抵抗の調整を行わなくてもヒューズ動作性の改善が可能であるため、高い信頼性と良好な保安性を発揮することが可能な金属化フィルムコンデンサを提供できる。   In the metallized film capacitor of the above embodiment, when it is necessary to adjust the fuse operability in accordance with the conditions to be used, the width w of the fuse part 9 and the vapor deposition electrode film resistance of the fuse part 9 are made constant. In the held state, the width W in the longitudinal direction of the second divided electrode 12 (and the width in the longitudinal direction of the first divided electrode 11) may be changed. Further, in the state in which the width w of the fuse portion 9 and the vapor deposition electrode film resistance of the fuse portion 9 are kept constant, the longitudinal width W of the second divided electrode 12 and the length of the first divided electrode 11 accordingly. The width in the direction and the number of first divided electrodes 11 may be changed. By such a changing operation, the current density in the fuse portion 9 can be adjusted, so that the fuse operability can be adjusted. In addition, since the fuse operability can be improved without adjusting the fuse width w and the deposited electrode film resistance, which affect the loss characteristics and reliability of the capacitor, high reliability and good security can be achieved. It is possible to provide a metallized film capacitor capable of exhibiting properties.

図３には、メタリコン電極１０に接続される接続部５の蒸着電極膜厚を、有効電極部の蒸着電極膜厚よりも厚くした構造、すなわち、いわゆるヘビーエッジ構造のコンデンサを示している。このコンデンサにおいては、損失特性の影響を特に大きく受けるため、上記方法により、ヒューズ動作の調整を行えば、高い信頼性と保安性を確保するのに一段と効果的である。また、このような構造を採用した場合には、図３にも示しているように、第１電極膜３Ａのヒューズ部９（及び絶縁スリット７）と第２電極膜３Ｂのヒューズ部９（及び絶縁スリット７）を幅方向にずらせて発熱位置を分散させることによる温度上昇の抑制効果は、一段と有効に発揮される。   FIG. 3 shows a capacitor having a so-called heavy edge structure in which the vapor deposition electrode film thickness of the connection part 5 connected to the metallicon electrode 10 is larger than the vapor deposition electrode film thickness of the effective electrode part. Since this capacitor is particularly affected by the loss characteristics, if the fuse operation is adjusted by the above method, it is more effective to ensure high reliability and security. When such a structure is adopted, as shown in FIG. 3, the fuse portion 9 (and the insulating slit 7) of the first electrode film 3A and the fuse portion 9 (and the second electrode film 3B) The effect of suppressing the temperature rise by dispersing the insulating slits 7) in the width direction and dispersing the heat generation positions is more effectively exhibited.

以上にこの発明の具体的な実施の形態について説明したが、この発明は上記形態に限定されるものではなく、この発明の範囲内で種々変更して実施することが可能である。例えば、実施形態のように、第１誘電体フィルム２Ａに第１電極３Ａを、第２誘電体フィルム２Ｂに第２電極３Ｂをそれぞれ形成してこれらを重ね合わせて巻回または積層してコンデンサを構成してもよいが、誘電体フィルムの両面に第１電極３Ａと第２電極３Ｂとを形成した両面金属化フィルムと、金属が蒸着されていない誘電体フィルムとを重ね合わせて巻回または積層することによってコンデンサを構成してもよい。また、ヒューズ部９は、分割マージン６や区画マージン８の適所に必要な個数だけ配置するようにしてもよい。なお、第1電極膜３Ａと第２電極膜３Ｂとに設けられるヒューズ部９（及び絶縁スリット７）を幅方向にずらせて配置する構造は、発熱の少ない場合には必ずしも必要なことではなく、場合によっては、互いに重ねて配置することもある。 Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, as in the embodiment, the first electrode 3A is formed on the first dielectric film 2A, and the second electrode 3B is formed on the second dielectric film 2B. Although it may be configured, a double-sided metallized film in which the first electrode 3A and the second electrode 3B are formed on both sides of the dielectric film and a dielectric film on which no metal is deposited are overlapped and wound or laminated. The capacitor may be configured by doing so. Also, it fuses portion 9 may be arranged a required number in place of the division margin 6 and compartment margin 8. Note that the structure in which the fuse portions 9 (and the insulating slits 7) provided in the first electrode film 3A and the second electrode film 3B are shifted in the width direction is not necessarily required when heat generation is small. In some cases, they may be placed on top of each other.

この発明の一実施形態に係る金属化フィルムコンデンサの金属化フィルムの平面図である。It is a top view of the metallized film of the metallized film capacitor concerning one embodiment of this invention. 上記実施形態に係る金属化フィルムコンデンサを示す縦断面図である。It is a longitudinal cross-sectional view which shows the metallized film capacitor which concerns on the said embodiment. 上記金属化フィルムコンデンサの変更例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the example of a change of the said metallized film capacitor. 従来の金属化フィルムコンデンサの金属化フィルムの平面図である。It is a top view of the metallized film of the conventional metallized film capacitor. 上記従来の金属化フィルムコンデンサの縦断面図である。It is a longitudinal cross-sectional view of the said conventional metallized film capacitor.

符号の説明Explanation of symbols

１Ａ、１Ｂ・・金属化フィルム、２Ａ、２Ｂ・・誘電体フィルム、３Ａ、３Ｂ・・電極膜、４・・絶縁マージン、５・・接続部、６・・分割マージン、７・・絶縁スリット、８・・区画マージン、９・・ヒューズ部、１０・・メタリコン電極、１１・・第１分割電極、１２・・第２分割電極   1A, 1B ... Metallized film, 2A, 2B ... Dielectric film, 3A, 3B ... Electrode film, 4 ... Insulation margin, 5 ... Connection, 6 ... Dividing margin, 7 ... Insulating slit, 8 .. Division margin, 9 .. Fuse part, 10 .. Metallicon electrode, 11 .. 1st divided electrode, 12 .. 2nd divided electrode

Claims (5)

誘電体フィルムの一方側に第１電極膜（３Ａ）を、また誘電体フィルムの他方側に第２電極膜（３Ｂ）をそれぞれ配置してなり、上記第１電極膜（３Ａ）は、容量を形成する有効電極部となる蒸着電極を有し、その長手方向に沿う一側部に絶縁マージン（４）を、また絶縁マージン（４）の反対側の他側部にメタリコン電極（１０）が形成される接続部（５）を設けた構造であって、上記有効電極部のほぼ中央部に絶縁スリット（７）を長手方向に設けると共に、幅方向に延びる分割マージン（６）を設けることにより上記有効電極部を所定の間隔で長手方向に分割して絶縁スリット（７）よりも接続部（５）側に、上記絶縁スリット（７）から接続部（５）までヒューズ部を介することなく連続する第２分割電極（１２）を形成し、さらに上記絶縁スリット（７）よりも絶縁マージン（４）側において上記分割マージン（６）間に幅方向に延びる区画マージン（８）を設けてその領域を所定の間隔で長手方向に分割することにより、上記絶縁スリット（７）から絶縁マージン（４）までヒューズ部を介することなく連続する第１分割電極（１１）を形成し、上記第２分割電極（１２）の長手方向の全幅とメタリコン電極（１０）とを直接接続するとともに、上記第２分割電極（１２）と各第１分割電極（１１）とを絶縁スリット（７）に設けたヒューズ部（９）によって接続した構造であり、また、第２電極膜（３Ｂ）は、第１電極膜（３Ａ）と略同一構造のものであって、絶縁マージン（４）側と接続部（５）側とを互いに逆にして配置した構造であり、一方の第１分割電極（１１）と他方の第２分割電極（１２）とが誘電体フィルムを介して対向するように構成したことを特徴とする金属化フィルムコンデンサ。   The first electrode film (3A) is arranged on one side of the dielectric film, and the second electrode film (3B) is arranged on the other side of the dielectric film. The first electrode film (3A) has a capacity. It has a vapor deposition electrode to be an effective electrode to be formed, and an insulating margin (4) is formed on one side along the longitudinal direction, and a metallicon electrode (10) is formed on the other side opposite to the insulating margin (4). The connection portion (5) is provided, and the insulating slit (7) is provided in the longitudinal direction at the substantially central portion of the effective electrode portion, and the division margin (6) extending in the width direction is provided. The effective electrode portion is divided in the longitudinal direction at a predetermined interval, and is continuous from the insulating slit (7) to the connecting portion (5) from the insulating slit (7) to the connecting portion (5) without passing through the fuse portion. Forming a second divided electrode (12); By providing a partition margin (8) extending in the width direction between the division margins (6) on the insulation margin (4) side of the insulation slit (7), and dividing the region in the longitudinal direction at a predetermined interval, A first divided electrode (11) continuous from the insulating slit (7) to the insulating margin (4) without a fuse portion is formed, and the full width in the longitudinal direction of the second divided electrode (12) and the metallicon electrode (10 ) And the second divided electrode (12) and the first divided electrode (11) are connected by a fuse portion (9) provided in the insulating slit (7). The two-electrode film (3B) has substantially the same structure as the first electrode film (3A), and has a structure in which the insulating margin (4) side and the connection portion (5) side are arranged opposite to each other. One of the first divided electrodes ( 1) a metallized film capacitor and the other second divided electrode (12) and is characterized by being configured so as to face each other with a dielectric film. 上記接続部（５）の蒸着電極膜厚は、有効電極部の蒸着電極膜厚よりも厚くしていることを特徴とする請求項１記載の金属化フィルムコンデンサ。 The metallized film capacitor according to claim 1 , wherein the thickness of the vapor deposition electrode of the connection portion (5) is larger than that of the effective electrode portion. 上記第１電極膜（３Ａ）のヒューズ部（９）と、第２電極膜（３Ｂ）のヒューズ部（９）とは、絶縁スリット（７）の延設方向とは交差する方向に位置をずらせて配置してあることを特徴とする請求項１又は請求項２に記載の金属化フィルムコンデンサ。 The fuse part (9) of the first electrode film (3A) and the fuse part (9) of the second electrode film (3B) are shifted in the direction intersecting the extending direction of the insulating slit (7). The metallized film capacitor according to claim 1 or 2, wherein the metallized film capacitor is arranged. 第１誘電体フィルム（２Ａ）に第１電極膜（３Ａ）を、第２誘電体フィルム（２Ｂ）に第２電極膜（３Ｂ）をそれぞれ形成してこれらを重ね合わせたことを特徴とする請求項１〜請求項３のいずれかに記載の金属化フィルムコンデンサ。 A first electrode layer (3A) on the first dielectric film (2A), wherein characterized in that overlapped those in the second electrode film (3B) are respectively formed on the second dielectric film (2B) The metallized film capacitor in any one of Claims 1-3 . 誘電体フィルムの両面に第１電極膜（３Ａ）と第２電極膜（３Ｂ）とを形成した両面金属化フィルムと、金属が蒸着されていない誘電体フィルムとを重ね合わせたことを特徴とする請求項１〜請求項３のいずれかに記載の金属化フィルムコンデンサ。 A double-sided metallized film in which a first electrode film (3A) and a second electrode film (3B) are formed on both surfaces of a dielectric film and a dielectric film on which no metal is deposited are superimposed. The metallized film capacitor in any one of Claims 1-3 .
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