JPH03270005A - Solid electrolytic capacitor - Google Patents
Solid electrolytic capacitorInfo
- Publication number
- JPH03270005A JPH03270005A JP6916390A JP6916390A JPH03270005A JP H03270005 A JPH03270005 A JP H03270005A JP 6916390 A JP6916390 A JP 6916390A JP 6916390 A JP6916390 A JP 6916390A JP H03270005 A JPH03270005 A JP H03270005A
- Authority
- JP
- Japan
- Prior art keywords
- fuse
- capacitor element
- point alloy
- cathode terminal
- melting point
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 51
- 239000007787 solid Substances 0.000 title claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 29
- 239000000956 alloy Substances 0.000 claims abstract description 29
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 229910000679 solder Inorganic materials 0.000 claims abstract description 8
- 238000002844 melting Methods 0.000 claims description 24
- 230000008018 melting Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract description 7
- 239000011888 foil Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001245 Sb alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
陰極端子とコンデンサ素子間に低融点合金を上下から二
枚の絶縁性フィルムで所定長さ対向させて重ねて張り合
わせたヒユーズを導電性接着剤。[Detailed Description of the Invention] [Summary] A fuse made of a low melting point alloy is laminated from above and below with two insulating films facing each other for a predetermined length and is laminated with a conductive adhesive between a cathode terminal and a capacitor element.
または半田で結合した固体電解コンデンサに関し、ヒユ
ーズ溶断性能が優れ、且つ小型化することができる固体
電解コンデンサを提供することを目的とし、
コンデンサ素子に陽極端子及びヒユーズを介して陰極端
子を接続し、絶縁性の樹脂材により外装された固体電解
コンデンサであって、ヒユーズを、板状または線状に形
成した低融点合金を上下から二枚の絶縁性フィルムで長
手方向に一部を所定長さだけ対向させて重ねた状態に構
成して、コンデンサ素子の陰極端子側の面に配置し、コ
ンデンサ素子及び陰極端子に対向する低融点合金の面を
コンデンサ素子及び陰極端子に導電性接着剤若しくは半
田で結合した構成とする。Or, regarding solid electrolytic capacitors bonded by solder, the purpose of the present invention is to provide a solid electrolytic capacitor that has excellent fuse blowing performance and can be miniaturized, by connecting a cathode terminal to a capacitor element via an anode terminal and a fuse, A solid electrolytic capacitor coated with an insulating resin material, in which the fuse is made of a low melting point alloy formed into a plate shape or a wire shape, and is covered with two insulating films from above and below for a predetermined length in the longitudinal direction. The low melting point alloy surface facing the capacitor element and the cathode terminal is applied with conductive adhesive or solder to the capacitor element and the cathode terminal. A combined configuration.
（産業上の利用分野）
本発明は、ヒユーズを内蔵した固体電解コンデンサに係
り、特に陰極端子とコンデンサ素子間に低融点合金を上
下から二枚の絶縁性フィルムに張り付けた所定長さ対向
させて重ねたヒユーズを導電性接着剤、または半田で結
合した固体電解コンデンサに関するものである。(Industrial Application Field) The present invention relates to a solid electrolytic capacitor with a built-in fuse, and in particular, a low melting point alloy is pasted on two insulating films from above and below, facing each other for a predetermined length between a cathode terminal and a capacitor element. This relates to a solid electrolytic capacitor in which stacked fuses are bonded using conductive adhesive or solder.
第５図にヒユーズ内蔵型の固体電解コンデンサを示す。 Figure 5 shows a solid electrolytic capacitor with a built-in fuse.
図において、１ａはコンデンサ素子で極性を有する金属
粉を成形、焼結して金属の表面に誘電体層、二酸化マン
ガン等の電解質層、カーボン層導電性銀塗料層等から成
る陰極導電体層を順次積層したものである。In the figure, 1a is a capacitor element, which is formed by molding and sintering polar metal powder to form a cathode conductor layer consisting of a dielectric layer, an electrolyte layer such as manganese dioxide, a carbon layer, a conductive silver paint layer, etc. on the metal surface. These are sequentially laminated.
２はコンデンサ素子１ａより導出された陽極線。2 is an anode wire led out from the capacitor element 1a.
３ａは陽極線２と溶接によって接続された陽極端子材、
４ａは陰極端子材で、半田または導電性接着剤（以下
導電性接着剤で説明する）５ａによって、低融点合金（
例えばＰｂ−５ａ合金等が使用される）から威るヒユー
ズ６ａの一端と接続される。ヒユーズ６ａの他端は導電
性接着剤５ａによりコンデンサ素子１ａに接続されてい
る。７は全体を外装する絶縁性の樹脂材で、一般にエポ
キシ樹脂等が使用される。3a is an anode terminal material connected to the anode wire 2 by welding;
4a is a cathode terminal material, and a low melting point alloy (
For example, a Pb-5a alloy or the like is used) and is connected to one end of a fuse 6a. The other end of the fuse 6a is connected to the capacitor element 1a by a conductive adhesive 5a. Reference numeral 7 denotes an insulating resin material for covering the entire body, and epoxy resin or the like is generally used.
このような構成を有するので、コンデンサ素子１部内で
短絡等の障害が発生した時は、発熱によって所定温度に
達するとヒユーズ６ａが溶断して発火を防止することが
できる。With such a configuration, when a fault such as a short circuit occurs within the capacitor element 1, the fuse 6a blows out when a predetermined temperature is reached due to heat generation, thereby preventing ignition.
〔発明が解決しようとする課題］
上記従来方法によれば、優れた溶断性能を得るためにヒ
ユーズの箔化や細線化を進めた場合に、ヒユーズは導電
性接着剤による固定以外に固定される部分を持たないた
めに、組み立て時のごく軽い機械的な力によって変形し
て組み立て精度を失い、時には断線やクラックが生じる
可能性があり、作業性が悪く、品質の確保が難しい。[Problems to be Solved by the Invention] According to the above conventional method, when the fuse is made into a foil or made into a thinner wire in order to obtain excellent fusing performance, the fuse is fixed by a method other than fixing with a conductive adhesive. Because they do not have any parts, they can be deformed by very light mechanical forces during assembly, resulting in loss of assembly precision, and sometimes breakage or cracks may occur, resulting in poor workability and difficulty in ensuring quality.
またヒユーズの有効長を確保しつつ、ヒユーズ溶断性能
のバラツキを抑えることが必要であるため、コンデンサ
素子と陰極端子材（場合によっては陽極線と陽極端子材
）の絶縁に対しては、ヒユーズに絶縁物を被覆したり、
他の絶縁物を設ける必要があり、コンデンサ素子や陰極
端子材を絶縁する場合に余分な工数が掛かったり、ヒユ
ーズによってコンデンサ素子の占有可能空間が減り、小
型化を阻害しているという問題点がある。In addition, it is necessary to suppress variations in fuse blowing performance while ensuring the effective length of the fuse. Cover with insulation,
Another problem is that it is necessary to provide another insulator, which requires extra man-hours when insulating the capacitor element and cathode terminal material, and the fuse reduces the space that can be occupied by the capacitor element, hindering miniaturization. be.
本発明は、ヒユーズ溶断性能が優れ、且つ小型化するこ
とができる固体電解コンデンサを提供することを目的と
している。An object of the present invention is to provide a solid electrolytic capacitor that has excellent fuse blowing performance and can be downsized.
第１図は本発明の原理図で、（ａ）は斜視図、（ｂ）は
ヒユーズの側面図である。FIG. 1 is a diagram showing the principle of the present invention, in which (a) is a perspective view and (b) is a side view of a fuse.
図において、１はコンデンサ素子、３は陽極端子、４は
陰極端子、５は導電性接着剤、８は絶縁性フィルム、９
は低融点合金、
６は板状または線状に形成した低融点合金９を上下から
二枚の絶縁性フィルム８で長手方向に一部を所定長さだ
け対向させて重ねた状態に構成したヒユーズである。In the figure, 1 is a capacitor element, 3 is an anode terminal, 4 is a cathode terminal, 5 is a conductive adhesive, 8 is an insulating film, 9
6 is a low melting point alloy, and 6 is a fuse constructed by stacking a low melting point alloy 9 formed into a plate shape or a linear shape with two insulating films 8 from above and below, with parts facing each other by a predetermined length in the longitudinal direction. It is.
従ってヒユーズ６をコンデンサ素子１の陰極端子４側の
面に配置し、コンデンサ素子１及び陰極端子４に対向す
る低融点合金９の面をコンデンサ素子ｌ及び陰極端子４
に導電性接着剤５若しくは半田で結合するように構成さ
れている。Therefore, the fuse 6 is arranged on the surface of the capacitor element 1 on the cathode terminal 4 side, and the surface of the low melting point alloy 9 facing the capacitor element 1 and the cathode terminal 4 is placed on the surface of the capacitor element 1 and the cathode terminal 4.
It is configured to be bonded to the conductive adhesive 5 or solder.
［作用］
ヒユーズ６がコンデンサ素子１の面上に配置されて、絶
縁性フィルム８が低融点合金９の一部の両面及び他の部
分の片面に接着しているために、低融点合金９は絶縁フ
ィルム８により固定された状態になり、コンデンサ素子
１との接続の際に、機械的な力による変形、断線やクラ
ック等が回避でき、且つヒユーズ６の箔化や細線化が可
能となる。また絶縁性フィルム８がヒユーズ６の有効長
の確保と、コンデンサ素子１と陰極端子４の間の絶縁を
兼ねるため、物理的寸法を変えないで重ね合わせ寸法に
より有効長を決定することができる。[Function] Since the fuse 6 is arranged on the surface of the capacitor element 1 and the insulating film 8 is adhered to both sides of a part of the low melting point alloy 9 and to one side of the other part, the low melting point alloy 9 It is fixed by the insulating film 8, and deformation due to mechanical force, disconnection, cracking, etc. can be avoided when connecting with the capacitor element 1, and the fuse 6 can be made into a foil or a thin wire. Furthermore, since the insulating film 8 serves both to secure the effective length of the fuse 6 and to insulate between the capacitor element 1 and the cathode terminal 4, the effective length can be determined by the overlapping dimension without changing the physical dimensions.
従って小型化が図れると共に、溶断性能の優れた固体電
解コンデンサを得ることができる。Therefore, it is possible to obtain a solid electrolytic capacitor that is smaller in size and has excellent fusing performance.
第２図〜第４図により本発明の一実施例を説明する。全
図を通じて同一符号は同一対象物を示す。An embodiment of the present invention will be described with reference to FIGS. 2 to 4. The same reference numerals indicate the same objects throughout the figures.
第２図は従来例で説明した固体電解コンデンサに本発明
を適用した斜視図で、第２図で第１図と同一名称のもの
は夫々対応しており、第２図の陽極線２及び陽極端子材
３ａは、第１図の陽極端子３に対応し、また第２図の陰
極端子材４ｂは、第１図の陰極端子４に対応している。Fig. 2 is a perspective view in which the present invention is applied to the solid electrolytic capacitor explained in the conventional example. The terminal material 3a corresponds to the anode terminal 3 in FIG. 1, and the cathode terminal material 4b in FIG. 2 corresponds to the cathode terminal 4 in FIG.
第２図において、陰極端子材４ｂは、断面コ字形に形成
され、内側の面がコンデンサ素子１ａの面に対向してい
る。In FIG. 2, the cathode terminal material 4b has a U-shaped cross section, and its inner surface faces the surface of the capacitor element 1a.
ヒユーズ６ｂは、第３図（ａ）及び（ｂ）の平面図及び
側面図に示すように、所定幅の箔状の低融点合金板９ａ
を上下から二枚の絶縁性フィルム８ａ、８ｂで長手方向
に一部を所定長さｌだけ対向させて重ねて接着材１０で
接着して構成されている。低融点合金板９ａはＰｂ−５
ｎ合金、またはＰｂ−５ｎ−Ｓｂ合金で形成されている
。As shown in the plan and side views of FIGS. 3(a) and 3(b), the fuse 6b includes a foil-shaped low melting point alloy plate 9a of a predetermined width.
It is constructed by stacking two insulating films 8a and 8b from above and below, with parts of them facing each other by a predetermined length l in the longitudinal direction, and bonding them with an adhesive 10. The low melting point alloy plate 9a is Pb-5
It is made of n alloy or Pb-5n-Sb alloy.
そして第２図及び第４図に示すように、ヒユーズ６ｂは
コンデンサ素子１ａと陰極端子材４ｂの間に配置され、
低融点合金板９ａ及びコンデンサ素子１ａ＋低融点合金
板９ａ及び陰極端子材４ｂが夫々直接対向する面が導電
性接着剤５ａで接着されている。As shown in FIGS. 2 and 4, the fuse 6b is arranged between the capacitor element 1a and the cathode terminal material 4b,
Directly opposing surfaces of the low melting point alloy plate 9a, the capacitor element 1a+the low melting point alloy plate 9a, and the cathode terminal material 4b are bonded with a conductive adhesive 5a.
絶縁フィルム８ａ、８ｂが片側だけ接した低融点合金板
９ａの部分は、導電性接着材５ａにより片面は陰極端子
材４ｂに、他方の片面はコンデンサ素子１ａに接続され
るため、接続品質上接触面積を大きく設定されている。The part of the low melting point alloy plate 9a where the insulating films 8a and 8b are in contact with only one side is connected to the cathode terminal material 4b on one side and the capacitor element 1a on the other side by the conductive adhesive 5a, so there is no contact due to connection quality. The area is set to be large.
このような構成を有するので、ヒユーズ６ｂはヒユーズ
としての本来の働きをする部分は、絶縁フィルム８ａ、
８ｂで被覆された合金部分であり、この部分を箔化や細
線化することでヒユーズ溶断電流を設定して溶断精度を
高めることができる。Since the fuse 6b has such a structure, the parts that function as a fuse are the insulating film 8a,
8b, and by making this part into a foil or thin wire, the fuse blowing current can be set and the blowing accuracy can be increased.
また絶縁性フィルム８ａ、８ｂが低融点合金９８の一部
の両面及び他の部分の片面に接着しているために、低融
点合金９８は絶縁フィルム８ａ、８ｂにより固定された
状態になり、コンデンサ素子１ａと接続する時に機械的
な力による変形、断線やクラック等が生じることが防止
され、更にヒユーズ６ｂの箔化や細線化が可能となる。In addition, since the insulating films 8a and 8b are adhered to both sides of a part of the low melting point alloy 98 and to one side of the other part, the low melting point alloy 98 is fixed by the insulating films 8a and 8b, and the capacitor Deformation, disconnection, cracks, etc. due to mechanical force are prevented from occurring when connecting to the element 1a, and furthermore, the fuse 6b can be formed into a foil or a thin wire.
また絶縁性フィルム８ａ、８ｂがヒユーズ６ｂの有効長
の確保と、コンデンサ素子１ａと陰極端子材４ｂの間の
絶縁を兼ねるので、物理的寸法を変えないで重ね合わせ
寸法で有効長を決めることができる。またヒユーズ６ｂ
は占有スペースを取らないので、固体コンデンサの小型
化を図ることができる。Furthermore, since the insulating films 8a and 8b serve both to secure the effective length of the fuse 6b and to insulate between the capacitor element 1a and the cathode terminal material 4b, the effective length can be determined by the overlapping dimension without changing the physical dimensions. can. Also fuse 6b
Since it does not take up much space, the solid capacitor can be made smaller.
上記例の導電性接着剤５ａによる接着は半田による融着
としても良いことは勿論である。Of course, the adhesion using the conductive adhesive 5a in the above example may be replaced by fusion using solder.
以上説明したように本発明によれば、陰極端子とコンデ
ンサ素子間に低融点合金を上下から二枚の絶縁性フィル
ムで所定長さ対向させて重ねて張合わせたヒユーズを導
電性接着剤、または半田で結合したことにより、絶縁性
フィルムが低融点合金の一部の両面及び他の部分の片面
に接着しているために、
■低融点合金は絶縁フィルムによって固定されるので、
組立精度が高まり、組み立て時のヒユーズ接続の際に、
機械的な力による変形、断線やクランク等が回避でき、
且つヒユーズの箔化や細線化が可能となる。As explained above, according to the present invention, a fuse in which a low melting point alloy is laminated from above and below with two insulating films facing each other for a predetermined length is attached between the cathode terminal and the capacitor element using a conductive adhesive or By joining with solder, the insulating film is adhered to both sides of one part of the low melting point alloy and to one side of the other part. ■The low melting point alloy is fixed by the insulating film;
Assembling accuracy has been improved, and when connecting fuses during assembly,
Deformation, wire breakage, cranking, etc. caused by mechanical force can be avoided.
In addition, it is possible to make the fuse into a foil or thin wire.
■また絶縁性フィルムがヒユーズの有効長の確保と、コ
ンデンサ素子と陰極端子の間の絶縁を兼ねるので、物理
的寸法を変えずに重ね合わせ寸法により有効長を決定す
ることができる。従って溶断電流の設定が容易になり、
また溶断性能を高めることができる。(2) Furthermore, since the insulating film serves both to secure the effective length of the fuse and to insulate between the capacitor element and the cathode terminal, the effective length can be determined by the overlapping dimension without changing the physical dimensions. Therefore, it is easy to set the fusing current,
Furthermore, the fusing performance can be improved.
■ヒユーズの占有スペースを要しないので小型化に寄与
することができる。■As the space occupied by the fuse is not required, it can contribute to miniaturization.
という効果がある。There is an effect.
第１図は本発明の原理図、
第２図は本発明の実施例を示す斜視図、第３図は実施例
のヒユーズを示す構成国、第４図は実施例の説明図、
第５図は従来例の固体電解コンデンサを示す斜視図であ
る。
図において、
１，１ａはコンデンサ素子、２は陽極線、３は陽極端子
、 ３ａは陽極端子材、４は陰極端子、
４ａ、４ｂは陰極端子材、５．５ａは導電性接着剤、
６，６ａ、６ｂはヒユーズ、８．８ａ、８ｂは絶縁性フ
ィルム、
９は低融点合金、
９ａは低融点合金板を示す。Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is a perspective view showing an embodiment of the invention, Fig. 3 is a constituent country showing the fuse of the embodiment, Fig. 4 is an explanatory diagram of the embodiment, Fig. 5 1 is a perspective view showing a conventional solid electrolytic capacitor. In the figure, 1 and 1a are capacitor elements, 2 is an anode wire, 3 is an anode terminal, 3a is an anode terminal material, 4 is a cathode terminal,
4a and 4b are cathode terminal materials, 5.5a is a conductive adhesive,
6, 6a and 6b are fuses, 8.8a and 8b are insulating films, 9 is a low melting point alloy, and 9a is a low melting point alloy plate.
Claims (1)
（６）を介して陰極端子（４）を接続し、絶縁性樹脂材
により外装された固体電解コンデンサであって、 前記ヒューズ（６）を、板状または線状に形成した低融
点合金（９）を上下から二枚の絶縁性フィルム（８）で
長手方向に一部を所定長さだけ対向させて重ねた状態に
構成して、前記コンデンサ素子（１）の前記陰極端子（
４）側の面に配置し、該コンデンサ素子（１）及び該陰
極端子（４）に対向する該低融点合金（９）の面を該コ
ンデンサ素子（１）及び該陰極端子（４）に導電性接着
剤（５）若しくは半田で結合したことを特徴とする固体
電解コンデンサ。[Scope of Claims] A solid electrolytic capacitor in which a cathode terminal (4) is connected to a capacitor element (1) via an anode terminal (3) and a fuse (6) and is sheathed with an insulating resin material, comprising: The fuse (6) is made by stacking a low melting point alloy (9) formed into a plate or a line with two insulating films (8) from above and below, with some parts facing each other by a predetermined length in the longitudinal direction. configuring, the cathode terminal (
4), and the surface of the low melting point alloy (9) facing the capacitor element (1) and the cathode terminal (4) is conductive to the capacitor element (1) and the cathode terminal (4). A solid electrolytic capacitor characterized in that it is bonded with a magnetic adhesive (5) or solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6916390A JP2954262B2 (en) | 1990-03-19 | 1990-03-19 | Solid electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6916390A JP2954262B2 (en) | 1990-03-19 | 1990-03-19 | Solid electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03270005A true JPH03270005A (en) | 1991-12-02 |
| JP2954262B2 JP2954262B2 (en) | 1999-09-27 |
Family
ID=13394766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6916390A Expired - Lifetime JP2954262B2 (en) | 1990-03-19 | 1990-03-19 | Solid electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2954262B2 (en) |
-
1990
- 1990-03-19 JP JP6916390A patent/JP2954262B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2954262B2 (en) | 1999-09-27 |
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