JPH07142284A - Metallized film capacitor - Google Patents
Metallized film capacitorInfo
- Publication number
- JPH07142284A JPH07142284A JP28931493A JP28931493A JPH07142284A JP H07142284 A JPH07142284 A JP H07142284A JP 28931493 A JP28931493 A JP 28931493A JP 28931493 A JP28931493 A JP 28931493A JP H07142284 A JPH07142284 A JP H07142284A
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- Prior art keywords
- metallized film
- capacitor
- shaped
- film
- dimension
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属化フィルムコンデ
ンサの蒸着電極の長さ方向に複数個の絶縁溝を設けて区
分電極を形成して保安機能を具備した金属化フィルムコ
ンデンサ（以下本発明のＭＦコンデンサと云う）の改良
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metallized film capacitor having a safety function by forming a plurality of insulating grooves in the lengthwise direction of a vapor deposition electrode of the metallized film capacitor to form partition electrodes. MF capacitor) of the above).
【０００２】[0002]
【従来の技術】蒸着電極を絶縁溝で誘電体フィルムの長
手方向に複数個に区分し、図１に示すような牛首状狭さ
く部を設けて半島状蒸着電極を形成し、該半島状狭さく
部にヒューズ機能を付与した従来の金属化フィルムコン
デンサ（以下従来のＭＦコンデンサと言う）は、誘電体
フィルムの種類、蒸着膜金属の種類および蒸着膜抵抗の
値によって保安機能の性能に大きく差異を生じていた。2. Description of the Related Art A vapor deposition electrode is divided into a plurality of lengthwise directions of a dielectric film by an insulating groove, and a cow-neck-shaped narrowing portion as shown in FIG. 1 is provided to form a peninsula-shaped vapor deposition electrode. The conventional metallized film capacitor (hereinafter referred to as the conventional MF capacitor) with a fuse function added to the capacitor has a large difference in the performance of the security function depending on the type of the dielectric film, the metal of the deposited film and the value of the deposited film resistance. Was there.
【０００３】このため、上記区分電極構造の金属化フィ
ルムでは、Ｔ形または逆Ｌ形絶縁溝の誘電体フィルムの
長手方向の間隔を変えたり、上記半島状蒸着電極の牛首
状狭さく部を複数個に分割して設けるなどして保安機能
の性能改善が図られてきたが、何れの方法も期待する効
果が少なかった。For this reason, in the metallized film having the above-mentioned segmented electrode structure, the distance between the dielectric films of the T-shaped or inverted L-shaped insulating grooves in the longitudinal direction is changed, and a plurality of cow-neck-shaped constricted portions of the peninsular deposition electrode are formed. Although the security function performance has been improved by dividing it into two parts, none of the methods had the expected effect.
【０００４】[0004]
【発明が解決しようとする課題】発明が解決しようとす
る課題は、区分電極構造の上記従来のＭＦコンデンサの
保安機能の作動性を改良し、該コンデンサの信頼性を向
上させる点である。The problem to be solved by the present invention is to improve the operability of the safety function of the above-mentioned conventional MF capacitor having a sectional electrode structure and to improve the reliability of the capacitor.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記課題を解
決するために保安機能の作動性を改良した金属化フィル
ムコンデンサを提供するもので、図１に示す半島状金属
化フィルムの牛首状狭さく部の幅寸法ａおよび長さ寸法
ｂの寸法比をａ＜ｂの関係を満足する条件にして、牛首
状狭さく部の電気抵抗を増大させ、コンデンサを形成す
る一区分電極に故障過電流が流れたとき、牛首状狭さく
部で発生する熱量（ジュール熱）を増加させて、コンデ
ンサの故障電流を迅速かつ確実に遮断できるようにす
る。SUMMARY OF THE INVENTION The present invention provides a metallized film capacitor having improved safety function operability in order to solve the above-mentioned problems. It is a peninsular metallized film shown in FIG. Under the condition that the dimension ratio of the width dimension a and the length dimension b of the narrowed portion satisfies the relationship of a <b, the electrical resistance of the cow's neck-shaped narrowed portion is increased and a fault overcurrent is generated in the one-section electrode forming the capacitor. When flowing, the amount of heat (Joule heat) generated in the cow's neck-shaped constriction is increased, so that the failure current of the capacitor can be interrupted quickly and reliably.
【０００６】すなわち誘電体フィルムの幅方向の端部に
絶縁マージン部を設けて蒸着電極を形成し、かつ誘電体
フィルムの長手方向に複数個のＴ形あるいは逆Ｌ形の絶
縁溝を設けて牛首状狭さく部を形成した半島状金属化フ
ィルムと、上記絶縁溝を有しない他方の金属化フィルム
を絶縁マージン部が反対になるように重ね合せて巻回
し、その両端部にメタリコン金属を溶射して電極引出部
を形成したコンデンサ素子を外装した金属化フィルムコ
ンデンサにおいて、上記半島状金属化フィルムの牛首状
狭さく部の寸法ａとｂがａ＜ｂの関係を満足する条件を
具備したことを特徴とする金属化フィルムコンデンサで
ある。That is, a vapor deposition electrode is formed by providing an insulating margin portion at the end of the dielectric film in the width direction, and a plurality of T-shaped or inverted L-shaped insulating grooves are provided in the longitudinal direction of the dielectric film to provide a cow's neck. Peninsular metallized film with a narrowed portion and the other metallized film without the insulating groove are wound so that the insulation margins are opposite, and the metallikon metal is sprayed on both ends. A metallized film capacitor having a capacitor element formed with an electrode lead-out portion, which is provided with a condition that the dimensions a and b of the cow-neck-shaped narrowed portion of the peninsular metallized film satisfy the relationship of a <b. It is a metallized film capacitor.
【０００７】なお、該金属化フィルムコンデンサは、金
属化フィルムの蒸着金属が亜鉛（Ｚｎ）またはアルミニ
ウム（Ａｌ）あるいはその混合物からなることを特徴と
する。また、該金属化フィルムコンデンサは、誘電体フ
ィルムの材質がポリプロピレン（ＰＰ）またはポリエチ
レンテレフタレート（ＰＥＴ）からなることを特徴とす
る。The metallized film capacitor is characterized in that the metallized film vapor-deposited metal is zinc (Zn) or aluminum (Al) or a mixture thereof. The metallized film capacitor is characterized in that the material of the dielectric film is polypropylene (PP) or polyethylene terephthalate (PET).
【０００８】[0008]
【作用】図１に示すように半島状金属化フィルム１の牛
首状狭さく部５の寸法ａおよびｂをａ＜ｂの関係を満足
する条件とし、寸法ｂを寸法ａより長くすれば、牛首状
狭さく部５の電気抵抗が増大し、該部分で発生する発生
熱量（ジュール熱）が増加する。すなわち、As shown in FIG. 1, if the dimensions a and b of the cow neck-shaped narrowed portion 5 of the peninsular metallized film 1 satisfy the condition of a <b, and the dimension b is made longer than the dimension a, the cow neck shape is obtained. The electrical resistance of the narrow portion 5 increases, and the amount of heat generated (Joule heat) generated in this portion increases. That is,
【０００９】[0009]
【数１】 [Equation 1]
【００１０】であり、牛首状狭さく部５の電流Ｉ（Ａ）
または電気抵抗Ｒ（Ω）を増加させることによって、該
部分で生じる電力損失Ｐ（Ｗ）が増大してより多くのジ
ュール熱が発生して本発明のＭＦコンデンサの保安機能
の作動性能が向上する。And the current I (A) of the cow's neck-shaped constriction 5
Alternatively, by increasing the electric resistance R (Ω), the power loss P (W) generated in the portion is increased, more Joule heat is generated, and the operation performance of the safety function of the MF capacitor of the present invention is improved. .
【００１１】上記牛首状狭さく部５の形状は図１に示す
ほか、図２〜図７に示す実施例の形状などがあり、牛首
状狭さく部５の形状は特に制約されるものでなくその選
択は自由であって、またこれらの牛首状狭さく部５を適
当に組合せてもよく、その作用は何れも同等である。The shape of the cow neck-shaped constriction portion 5 is not limited to that shown in FIG. 1 but also the shapes of the embodiments shown in FIGS. 2 to 7. The shape of the cow neck-shaped constriction portion 5 is not particularly limited and can be selected. Are free, and these cow neck-shaped constrictions 5 may be appropriately combined, and the effects are the same.
【００１２】[0012]
【実施例】以下、本発明のＭＦコンデンサの実施例につ
いて説明する。図１に示す半島状金属化フィルム１と、
蒸着膜に絶縁溝４を有さないベース側金属化フィルム６
とを絶縁マージン部３が反対になるように重ね合せて巻
回し、その両端にメタリコン金属を溶射して電極引出部
７を形成したコンデンサ素子８を外装して本発明のＭＦ
コンデンサを製作した。EXAMPLES Examples of the MF capacitor of the present invention will be described below. A peninsular metallized film 1 shown in FIG.
Base side metallized film 6 having no insulating groove 4 in the vapor deposition film
And are wound so that the insulation margin portions 3 are opposite to each other and wound, and the capacitor element 8 having the electrode lead-out portions 7 formed by thermally spraying the metallikon metal on both ends thereof is externally packaged.
I made a capacitor.
【００１３】製作した上記コンデンサは下記の定格で、
試料数２５０個についてＪＩＳ Ｃ４９０８に規定され
た保安性試験によって各試料を比較評価した。コンデン
サの定格：定格電圧２５０ＶＡＣ、定格容量３０μＦThe capacitor thus manufactured has the following rating,
Each sample was compared and evaluated by a safety test defined in JIS C4908 for 250 samples. Rating of capacitor: Rated voltage 250VAC, rated capacity 30μF
【００１４】上記ＭＦコンデンサは、金属化フィルムの
試料区分を表１に示すように誘電体フィルムと蒸着金属
の組合せを試料記号Ａ〜Ｅの５試料に区分した。In the above MF capacitor, as shown in Table 1, the sample classification of the metallized film was classified into five samples of sample symbols A to E in which the combination of the dielectric film and the vapor-deposited metal was classified.
【００１５】[0015]
【表１】 [Table 1]
【００１６】また、蒸着金属の牛首状狭さく部５の寸法
ａおよびｂについては表２に示すように、寸法ａは試料
Ｎｏ．１〜５を１．０ｍｍ、試料Ｎｏ．６〜１０を０．
８ｍｍ、試料Ｎｏ．１１〜１５を０．６ｍｍの３水準と
し、寸法ｂは試料Ｎｏ．１〜５を１．３〜０．５ｍｍ
に、試料Ｎｏ．６〜１０を１．２〜０．４ｍｍに、試料
Ｎｏ．１１〜１５を１．１〜０．３ｍｍのそれぞれ５段
階に区分して各試料を比較評価した。Further, as to the dimensions a and b of the cow-neck-shaped narrowed portion 5 of the vapor-deposited metal, as shown in Table 2, the dimension a is the sample No. 1 to 5 for 1.0 mm, sample No. 6-10 to 0.
8 mm, sample No. 11 to 15 are set to 3 levels of 0.6 mm, and the dimension b is the sample No. 1 to 5 for 1.3 to 0.5 mm
Sample No. Sample No. 6 to 10 to 1.2 to 0.4 mm. 11 to 15 were divided into five stages of 1.1 to 0.3 mm, and each sample was compared and evaluated.
【００１７】[0017]
【表２】 [Table 2]
【００１８】実施例の評価試験と結果は表３に示す通り
であるが、先ずその評価試験の組合せについて、上記金
属化フィルムの試料区分Ａ、Ｃは牛首状狭さく部５の寸
法ａおよびｂを試料Ｎｏ．１〜１０とし、また試料区分
Ｂ、Ｄ、Ｅは試料Ｎｏ．６〜１５の各試験とした。The evaluation tests and the results of the examples are shown in Table 3. First, regarding the combination of the evaluation tests, the sample sections A and C of the metallized film described above have the dimensions a and b of the cow neck-shaped constriction 5. Sample No. 1 to 10, and sample sections B, D, and E are sample Nos. It was set as each test of 6-15.
【００１９】[0019]
【表３】 [Table 3]
【００２０】上記試験で全組合せの試験を実施しなかっ
た理由は、保安機能試験を行っても、金属化フィルムの
蒸着金属のもつ特性から当初から作動が困難な組合せ領
域と、作動性が容易であっても寿命特性と整合し難い領
域の組合せを除外したものである。The reason why all the combinations are not carried out in the above-mentioned test is that even if a security function test is carried out, it is difficult to operate from the beginning due to the characteristics of the vapor-deposited metal of the metallized film and the operability is easy. However, the combination of regions that are difficult to match the life characteristics is excluded.
【００２１】上記組合せによる試験を行った結果の評価
は表３の通りであり、この結果によると牛首状狭さく部
５の寸法ａおよびｂは、ａおよびｂの比がａ＜ｂの関係
を満足する条件において、保安機能は１００％の作動性
が得られることが確認できた。The evaluation of the results of the test by the above combination is shown in Table 3. According to this result, the dimensions a and b of the cow neck-shaped constriction 5 satisfy the relationship that the ratio of a and b is a <b. It was confirmed that 100% operability was obtained for the security function under the conditions.
【００２２】また、牛首状狭さく部５の寸法ａおよびｂ
の寸法比がａ＝ｂはもちろん、ａ＞ｂの条件になる程保
安機能の作動性が低下することも本試験の結果によって
明確となった。Further, the dimensions a and b of the cow neck-shaped narrowed portion 5
From the results of this test, it was also clarified that the operability of the safety function is reduced as the dimensional ratio of a becomes not less than a = b, but the condition of a> b.
【００２３】[0023]
【発明の効果】上記実施例の結果から明かなように、本
発明のＭＦコンデンサは図１〜図７に示すように半島状
金属化電極２が有する牛首状狭さく部５の寸法ａおよび
ｂがａ＜ｂの関係を満足する条件になれば、すなわち、
該牛首状狭さく部５の寸法ｂの長さを寸法ａの長さより
も長くし、電気抵抗を効果的に高めることにより、該部
分で発生する電力損失（ジュール熱の発生）を高めるこ
とができる。As is apparent from the results of the above-described embodiments, the MF capacitor of the present invention has the dimensions a and b of the cow neck-shaped constriction 5 of the peninsular metallized electrode 2 as shown in FIGS. If the condition that satisfies the relationship of a <b is satisfied, that is,
By making the dimension b of the cow neck-shaped narrowed portion 5 longer than the dimension a and effectively increasing the electric resistance, the power loss (generation of Joule heat) generated in the portion can be increased. .
【００２４】その結果、コンデンサの誘電体破壊時に発
生する故障電流を、誘電体の多層間破壊に至るまでに故
障電極のみを効果的に切りはなして遮断し、従来のＭＦ
コンデンサの技術課題であった高信頼性保安機能の要求
を本発明のＭＦコンデンサによって実現することがで
き、工業的ならびに実用的に価値大なるものである。As a result, the failure current generated when the dielectric of the capacitor is destroyed is effectively cut off by disconnecting only the defective electrode until the dielectric breakdown between layers occurs, and the conventional MF is used.
The requirement for high reliability and safety function, which has been a technical problem of capacitors, can be realized by the MF capacitor of the present invention, which is industrially and practically valuable.
【図１】本発明の金属化フィルムコンデンサに係るＴ形
絶縁溝を有する半島状金属化フィルムの実施例のパター
ン要部の説明図である。FIG. 1 is an explanatory view of a pattern main part of an embodiment of a peninsular metallized film having T-shaped insulating grooves according to the metallized film capacitor of the present invention.
【図２】本発明の金属化フィルムコンデンサに係る逆Ｌ
形絶縁溝を有する半島状金属化フィルムの実施例のパタ
ーン要部の説明図である。FIG. 2 is an inverted L according to the metallized film capacitor of the present invention.
It is explanatory drawing of the pattern principal part of the Example of the peninsular metallized film which has a shape insulation groove.
【図３】本発明の金属化フィルムコンデンサに係るＴ形
絶縁溝を有する半島状金属化フィルムの他の実施例のパ
ターン要部の説明図である。FIG. 3 is an explanatory diagram of a pattern main part of another embodiment of a peninsular metallized film having a T-shaped insulating groove according to the metallized film capacitor of the present invention.
【図４】本発明の金属化フィルムコンデンサに係るＴ形
絶縁溝を有する半島状金属化フィルムの他の実施例のパ
ターン要部の説明図である。FIG. 4 is an explanatory diagram of a pattern main part of another embodiment of a peninsular metallized film having a T-shaped insulating groove according to the metallized film capacitor of the present invention.
【図５】本発明の金属化フィルムコンデンサに係るＴ形
絶縁溝を有する半島状金属化フィルムの他の実施例のパ
ターン要部の説明図である。FIG. 5 is an explanatory diagram of a pattern main part of another embodiment of a peninsular metallized film having a T-shaped insulating groove according to the metallized film capacitor of the present invention.
【図６】本発明の金属化フィルムコンデンサに係るＴ形
絶縁溝を有する半島状金属化フィルムの他の実施例のパ
ターン要部の説明図である。FIG. 6 is an explanatory view of a pattern main part of another embodiment of a peninsular metallized film having a T-shaped insulating groove according to the metallized film capacitor of the present invention.
【図７】本発明の金属化フィルムコンデンサに係るＴ形
絶縁溝を有する半島状金属化フィルムの他の実施例のパ
ターン要部の説明図である。FIG. 7 is an explanatory diagram of a pattern main part of another embodiment of a peninsular metallized film having a T-shaped insulating groove according to the metallized film capacitor of the present invention.
【図８】本発明の金属化フィルムコンデンサのコンデン
サ素子の一部解体斜視図である。FIG. 8 is a partially disassembled perspective view of a capacitor element of the metallized film capacitor of the present invention.
１．半島状金属化フィルム ２．蒸着膜電極 ３．絶縁マージン部 ４．絶縁溝 ５．牛首状狭さく部 ６．ベース側金属化フィルム ７．電極引出部 ８．コンデンサ素子 1. Peninsular metallized film 2. Evaporated film electrode 3. Insulation margin section 4. Insulation groove 5. Cow neck narrow part 6. Base side metallized film 7. Electrode extraction part 8. Capacitor element
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【手続補正書】[Procedure amendment]
【提出日】平成５年１２月２７日[Submission date] December 27, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１５[Name of item to be corrected] 0015
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１５】[0015]
【表１】 [Table 1]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２１[Correction target item name] 0021
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２１】上記組合せによる試験を行った結果の評価
は表３の通りであり、この結果によると牛首状狭さく部
５の寸法ａおよびｂは、ａおよびｂの比がａ＜ｂの関係
を満足する条件において、保安機能は１００％の作動性
が得られることが確認できた。そして、牛首状狭さく部
ａおよびｂの寸法条件がａ：ｂ＝１：１．１以上の比率
である試料Ｎｏ．１，２，６，７，１１，１２，１３の
全てに１００％ の作動性を得た。The evaluation of the results of the test by the above combination is shown in Table 3. According to this result, the dimensions a and b of the cow neck-shaped constriction 5 satisfy the relationship that the ratio of a and b is a <b. It was confirmed that 100% operability was obtained for the security function under the conditions. Then, the sample No. in which the dimensional conditions of the cow neck-shaped narrowed portions a and b are a: b = 1: 1.1 or more. 100% operability was obtained for all of 1, 2, 6, 7, 11, 12, and 13.
Claims (1)
ージン部を設けて蒸着電極を形成し、かつ誘電体フィル
ムの長手方向に複数個のＴ形あるいは逆Ｌ形の絶縁溝を
設けて牛首状狭さく部を形成した半島状金属化フィルム
と、上記絶縁溝を有しない他方の金属化フィルムを絶縁
マージン部が反対になるように重ね合せて巻回し、その
両端部にメタリコン金属を溶射して電極引出部を形成し
たコンデンサ素子を外装した金属化フィルムコンデンサ
において、上記半島状金属化フィルムの牛首状狭さく部
の幅寸法ａと長さ寸法ｂが、ａ＜ｂの関係を満足する条
件を具備したことを特徴とする金属化フィルムコンデン
サ。1. A vapor deposition electrode is formed by providing an insulating margin portion at an end portion in the width direction of a dielectric film, and a plurality of T-shaped or inverted L-shaped insulating grooves are provided in the longitudinal direction of the dielectric film. A peninsula metallized film with a cow neck-shaped constriction and the other metallized film that does not have the above-mentioned insulation groove are overlapped and wound so that the insulation margins are opposite, and the metallikon metal is sprayed on both ends. In the metallized film capacitor with the capacitor element having the electrode lead-out portion formed thereon, the width dimension a and the length dimension b of the cow-neck-shaped narrowed portion of the peninsular metallized film satisfy the condition of a <b. A metallized film capacitor characterized by being provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28931493A JPH07142284A (en) | 1993-11-18 | 1993-11-18 | Metallized film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28931493A JPH07142284A (en) | 1993-11-18 | 1993-11-18 | Metallized film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07142284A true JPH07142284A (en) | 1995-06-02 |
Family
ID=17741586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28931493A Pending JPH07142284A (en) | 1993-11-18 | 1993-11-18 | Metallized film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07142284A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8310802B2 (en) * | 2006-08-28 | 2012-11-13 | Panasonic Corporation | Metallization film capacitor having divided electrode with fuse |
| CN113851328A (en) * | 2021-10-14 | 2021-12-28 | 浙江七星电子股份有限公司 | High-performance X2-class capacitor for suppressing power supply electromagnetic interference and processing method thereof |
-
1993
- 1993-11-18 JP JP28931493A patent/JPH07142284A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8310802B2 (en) * | 2006-08-28 | 2012-11-13 | Panasonic Corporation | Metallization film capacitor having divided electrode with fuse |
| CN113851328A (en) * | 2021-10-14 | 2021-12-28 | 浙江七星电子股份有限公司 | High-performance X2-class capacitor for suppressing power supply electromagnetic interference and processing method thereof |
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