JPH0513531B2 - - Google Patents
Info
- Publication number
- JPH0513531B2 JPH0513531B2 JP4335887A JP4335887A JPH0513531B2 JP H0513531 B2 JPH0513531 B2 JP H0513531B2 JP 4335887 A JP4335887 A JP 4335887A JP 4335887 A JP4335887 A JP 4335887A JP H0513531 B2 JPH0513531 B2 JP H0513531B2
- Authority
- JP
- Japan
- Prior art keywords
- external terminal
- cathode
- fuse
- anode
- heat
- 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 - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 30
- 239000007787 solid Substances 0.000 claims description 22
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Fuses (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ヒユーズ付き固体電解コンデンサお
よびその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a solid electrolytic capacitor with a fuse and a method for manufacturing the same.
一般に固体電解コンデンサは種々の電子回路に
使用されており、故障率は少ないが、万一回路中
で固体電解コンデンサが故障した場合には、短絡
となることが多く、大きな短絡電流が流れるとコ
ンデンサ素子が発熱し焼損することもある。この
コンデンサの短絡故障発生の際、他の回路構成素
子を保護するために短絡したら開放する機構、一
般的にはヒユーズを用いる手段が知られている。
従来技術としては、例えば、特公昭58−21816号
公報に示されている。すなわち、第２図に示すよ
うに、コンデンサ素子１外周の陰極層１ａと陰極
外部端子５との間に金属板８とヒユーズ６ならび
に断熱材９ならびに空洞部１０を有したヒユーズ
機構とを接続し、コンデンサ素子１より引き出さ
れた陽極体リード２へ陽極外部端子３が接続さ
れ、外装樹脂７に内蔵させた固体電解コンデンサ
や、特公昭58−19148号公報に示されている第３
図に示すようにコンデンサ素子１外周の陰極層１
ａと外部陰極端子５との間に充分距離をもたせ
た、すなわち長いヒユーズ６を介して導通接続
し、コンデンサ素子１より引き出された陽極体リ
ード２へ陽極外部端子３が接続され、外装樹脂７
に内蔵させた固体電解コンデンサ等がある。
Generally, solid electrolytic capacitors are used in various electronic circuits and have a low failure rate, but if a solid electrolytic capacitor fails in a circuit, it will often result in a short circuit, and if a large short circuit current flows, the capacitor will The element may generate heat and burn out. In order to protect other circuit components when a short-circuit failure occurs in this capacitor, a mechanism is known that opens the capacitor when the short circuit occurs, generally using a fuse.
A conventional technique is disclosed in, for example, Japanese Patent Publication No. 58-21816. That is, as shown in FIG. 2, a metal plate 8, a fuse 6, a heat insulating material 9, and a fuse mechanism having a cavity 10 are connected between the cathode layer 1a on the outer periphery of the capacitor element 1 and the cathode external terminal 5. , an anode external terminal 3 is connected to an anode body lead 2 drawn out from a capacitor element 1, and the anode external terminal 3 is connected to the anode body lead 2 drawn out from the capacitor element 1.
As shown in the figure, the cathode layer 1 on the outer periphery of the capacitor element 1
The anode external terminal 3 is connected to the anode body lead 2 drawn out from the capacitor element 1 by providing a sufficient distance between the external cathode terminal 5 and the external cathode terminal 5 through a long fuse 6.
There are solid electrolytic capacitors built into the
上述した従来のヒユーズ付き固体電解コンデン
サは、第１例の第２図の場合には、ヒユーズ機構
を組み込んでいるため外形寸法が大きくなり、か
つ多大な接続工数を要する。一方、第２例の第３
図の場合は、ヒユーズ６が溶断して回路を確実に
開放させるために、素子１と外部陰極端子５との
間に距離を長くしているため絶縁外装時に、ヒユ
ーズ６やヒユーズ６と素子１との接続部、あるい
はヒユーズ６と外部陰極端子５との接続部等に外
装樹脂の膨張、収縮の大きな圧力がかかり、損傷
を受ける危険がある。また、外形寸法も大きくな
る欠点を有する。
In the case of the first example shown in FIG. 2, the conventional solid electrolytic capacitor with a fuse described above has a built-in fuse mechanism, so the external dimensions are large and a large number of connection steps are required. On the other hand, the third example of the second example
In the case shown in the figure, the distance between element 1 and external cathode terminal 5 is increased in order to ensure that fuse 6 blows and opens the circuit. There is a risk of damage due to the large pressure of expansion and contraction of the exterior resin being applied to the connection between the fuse 6 and the external cathode terminal 5, or the connection between the fuse 6 and the external cathode terminal 5. Further, it has the disadvantage that the external dimensions are also large.
本発明の目的は、上述した従来の欠点を除去
し、ヒユーズ機構形成後も素子の外形、大きさを
殆んど変えないで済み、外装が簡易にでき、薄さ
の要求に対応でき、また端子間の幅が正確に維持
でき、かつヒユーズの有効長が一定に保持でき、
ヒユーズ特定を一定にすることができるヒユーズ
付き固体電解コンデンサおよびその製造方法を提
供することにある。 It is an object of the present invention to eliminate the above-mentioned conventional drawbacks, to make it possible to hardly change the external shape and size of the element even after forming the fuse mechanism, to simplify the exterior packaging, to meet the requirements for thinness, and to The width between the terminals can be maintained accurately, and the effective length of the fuse can be maintained constant.
An object of the present invention is to provide a solid electrolytic capacitor with a fuse and a method for manufacturing the same, which can keep the fuse specification constant.
本発明の第１の発明のヒユーズ付き固体電解コ
ンデンサは、陽極リード線が導出され最外層に陰
極層を有する固体電解コンデンサ素子と、前期陽
極リード線に接続された陽極外部端子と、該陽極
外部端子が接続された側と反対側の陰極層に装着
された熱収縮性絶縁スリーブと、該熱収縮性絶縁
スリーブ上に設置された陰極外部端子と、前記熱
収縮性絶縁スリーブを横断して前記陰極外部端子
と前記陰極層とを接続するフユーズと、絶縁外装
樹脂とを含んで構成される。
A solid electrolytic capacitor with a fuse according to the first aspect of the present invention includes a solid electrolytic capacitor element having a cathode layer on the outermost layer from which an anode lead wire is led out, an anode external terminal connected to the anode lead wire, and an anode external terminal connected to the anode lead wire. a heat-shrinkable insulation sleeve attached to the cathode layer on the side opposite to the side to which the terminal is connected; a cathode external terminal installed on the heat-shrinkable insulation sleeve; It is configured to include a fuse that connects the cathode external terminal and the cathode layer, and an insulating exterior resin.
また、本発明の第２の発明のヒユーズ付き固体
電解コンデンサの製造方法は、陽極リード線が導
出され、最外層に陰極層を有する固体電解コンデ
ンサ素子の陽極リード線に陽極外部端子を接続す
る工程と、該陽極外部端子が接続された側と反対
側の陰極層に熱収縮性絶縁スリーブを装着する工
程と、ヒユーズを接続した陰極外部端子を前記熱
収縮性絶縁スリーブ上に設置する工程と、前記陰
極外部端子に接続されたヒユーズを前記熱収縮性
絶縁スリーブを横断して前記陰極層に接続する工
程と、絶縁物にて外装する工程とを含んで構成さ
れる。 Further, the method for manufacturing a solid electrolytic capacitor with a fuse according to the second aspect of the present invention includes a step of connecting an anode external terminal to an anode lead wire of a solid electrolytic capacitor element having an anode lead wire led out and a cathode layer in the outermost layer. a step of attaching a heat-shrinkable insulating sleeve to the cathode layer on the opposite side to the side to which the anode external terminal is connected; a step of installing the cathode external terminal to which the fuse is connected on the heat-shrinkable insulating sleeve; The method includes the steps of: connecting a fuse connected to the cathode external terminal to the cathode layer across the heat-shrinkable insulating sleeve; and covering the fuse with an insulator.
次に、本発明の実施例について図面を参照して
説明する。第１図ａ〜ｄは本発明の一実施例の構
造及びその製造方法を説明するために工程順に示
した斜視図および正面図である。
Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1A to 1D are a perspective view and a front view shown in order of steps to explain the structure and manufacturing method of an embodiment of the present invention.
本発明の第１の発明のヒユーズ付き固体電解コ
ンデンサは、第一図ａ〜ｄに示すように、陽極リ
ード線２が導出され、最外層に陰極層１ａを有す
る固体電解コンデンサ素子（以後素子と略称）１
と、陽極リード２に接続された陽極外部端子３
と、陽極外部端子３が接続された側と反対側の陰
極層に装着された熱収縮性絶縁スリーブ４と、熱
収縮性絶縁スリーブ４上に設置された陰極外部端
子５と、熱収縮性絶縁スリーブ４を横断して陰極
外部端子５と陰極層１ａとを接続するフユーズ６
と、これらを外装する外装樹脂７により構成され
る。 The solid electrolytic capacitor with a fuse according to the first aspect of the present invention is a solid electrolytic capacitor element (hereinafter referred to as "element") having an anode lead wire 2 led out and a cathode layer 1a on the outermost layer, as shown in FIGS. Abbreviation) 1
and an anode external terminal 3 connected to the anode lead 2.
, a heat-shrinkable insulating sleeve 4 attached to the cathode layer on the opposite side to the side to which the anode external terminal 3 is connected, a cathode external terminal 5 installed on the heat-shrinkable insulating sleeve 4, and a heat-shrinkable insulator. A fuse 6 crosses the sleeve 4 and connects the cathode external terminal 5 and the cathode layer 1a.
and an exterior resin 7 that exteriorizes these.
次に、本発明の第２の発明のヒユーズ付き固体
電解コンデンサの製造方法の一実施例について説
明する。 Next, an embodiment of the method for manufacturing a solid electrolytic capacitor with a fuse according to the second aspect of the present invention will be described.
まず、第１図ａに示すように、タンタル、アル
ミニウムなどの弁作用を有する金属の粉末の所望
形状に成形し、陽極酸化を行ない、次いで二酸化
マンガンなどの半導体層、およびグラフアイト、
銀ペースト層を順次被着し、最外層に陰極層１ａ
を有する素子１を形成する。この素子１から導出
した陽極リード線２と、Ｌ字形に形成した陽極外
部端子３を溶接により接続する。 First, as shown in FIG. 1a, powder of a metal having a valve action such as tantalum or aluminum is formed into a desired shape and anodized, and then a semiconductor layer such as manganese dioxide, graphite,
Silver paste layers are sequentially deposited, and the cathode layer 1a is the outermost layer.
An element 1 having the following structure is formed. An anode lead wire 2 led out from this element 1 and an anode external terminal 3 formed in an L shape are connected by welding.
次に、第１図ｂに示すように、陽極外部端子３
が接続されている側と反対側の陰極層１ａに熱絶
縁性絶縁スリーブ４を通し、120℃、20秒間加熱
して、熱収縮性絶縁スリーブ４を陰極層１ａに装
着する。 Next, as shown in FIG. 1b, the anode external terminal 3
A thermally insulating insulating sleeve 4 is passed through the cathode layer 1a on the side opposite to the side to which it is connected, and heated at 120° C. for 20 seconds to attach the heat-shrinkable insulating sleeve 4 to the cathode layer 1a.
次に第１図ｃに示すように、予め導電性接着剤
あるいは、はんだ付けなどにより、厚さ100ミク
ロンの箔状のヒユーズ６を接続した陰極外部端子
５を、熱収縮性絶縁スリーブ４上に乗せる。 Next, as shown in FIG. 1c, the cathode external terminal 5, to which a 100-micron-thick foil fuse 6 has been connected in advance with conductive adhesive or soldering, is placed on the heat-shrinkable insulating sleeve 4. I'll ride it.
次に、ヒユーズ６と素子１を導電性接着剤、あ
るいは、はんだ付けなどにより接続し、エポキシ
樹脂等の外装樹脂７により絶縁外装し、本発明の
一実施例のヒユーズ付き固体電解コンデンサを形
成する。 Next, the fuse 6 and the element 1 are connected using a conductive adhesive or soldering, and covered with an insulating resin 7 such as epoxy resin to form a solid electrolytic capacitor with a fuse according to an embodiment of the present invention. .
以上説明したように本発明は、陰極層に熱収縮
性絶縁スリーブを装着し、その熱収縮性絶縁スリ
ーブ上を横断して、陰極層と外部陰極端子との間
をヒユーズにて接続しているので
(1) ヒユーズ機構形成後も素子の外形をほとんど
損なわず、樹脂デイツプ等の簡易な外装のヒユ
ーズ付き固体電解コンデンサの製作が可能であ
る。
As explained above, in the present invention, a heat-shrinkable insulating sleeve is attached to the cathode layer, and the cathode layer and the external cathode terminal are connected by a fuse across the heat-shrinkable insulating sleeve. Therefore, (1) it is possible to manufacture a solid electrolytic capacitor with a fuse with a simple exterior such as a resin dip, with almost no damage to the external shape of the element even after the fuse mechanism is formed.
(2) 素子の外形をほとんど変えないため、薄さを
要求されるヒユーズ付き固体電解コンデンサが
製作できる。(2) Solid electrolytic capacitors with fuses that require thinness can be manufactured because the external shape of the element is hardly changed.
(3) 陰極外部端子が素子に固着されるので端子間
の幅が正確にできる。(3) Since the cathode external terminal is fixed to the element, the width between the terminals can be made accurately.
(4) 熱収縮性絶縁スリーブの長さによりヒユーズ
の有効長が決まりヒユーズ特性が一定になる。(4) The effective length of the fuse is determined by the length of the heat-shrinkable insulating sleeve, making the fuse characteristics constant.
などの利点を有し、その工業的価値は大である。It has the following advantages and its industrial value is great.
第１図ａ〜ｄは本発明の一実施例の構造および
その製造方法を説明するために工程順に示した斜
視図および正面図、第２図、第３図はそれぞれ従
来のヒユーズ付き固体電解コンデンサの側断面図
および斜視図である。
１……（固体電解コンデンサ）素子、１ａ……
陰極層、２……陽極リード線、３……陽極外部端
子、４……熱収縮性絶縁スリーブ、５……陰極外
部端子、６……ヒユーズ、７……外装樹脂、８…
…金属板、９……断熱材、１０……空洞部。
1A to 1D are perspective views and front views shown in the order of steps to explain the structure and manufacturing method of an embodiment of the present invention, and FIGS. 2 and 3 are respectively conventional solid electrolytic capacitors with fuses. FIG. 2 is a side sectional view and a perspective view. 1... (solid electrolytic capacitor) element, 1a...
Cathode layer, 2... Anode lead wire, 3... Anode external terminal, 4... Heat-shrinkable insulating sleeve, 5... Cathode external terminal, 6... Fuse, 7... Exterior resin, 8...
...Metal plate, 9...Insulating material, 10...Cavity part.
Claims (1)
有する固体電解コンデンサ素子と、前記陽極リー
ド線に接続された陽極外部端子と、該陽極外部端
子が接続された側と反対側の陰極層に装着された
熱収縮性絶縁スリーブと、該熱収縮性絶縁スリー
ブ上に設置された陰極外部端子と、前記熱収縮性
絶縁スリーブを横断して前記陰極外部端子と前記
陰極層とを接続するフエーズと、絶縁外装樹脂と
を含むことを特徴とするヒユーズ付き固体電解コ
ンデンサ素子。 ２ 陽極リード線が導出され最外層に陰極層を有
する固体電解コンデンサ素子の陽極リード線に陽
極外部端子を接続する工程と、該陽極外部端子が
接続された側と反対側の陰極層に熱収縮性絶縁ス
リーブを装着する工程と、ヒユーズを接続した陰
極外部端子を前記熱収縮性絶縁スリーブ上に設置
する工程と、前記陰極外部端子に接続されたフエ
ーズを前記熱収縮性絶縁スリーブを横断して前記
陰極層を接続する工程と、絶縁物にて外装する工
程とを含むことを特徴とするヒユーズ付き固体電
解コンデンサの製造方法。[Scope of Claims] 1. A solid electrolytic capacitor element from which an anode lead wire is led out and having a cathode layer on the outermost layer, an anode external terminal connected to the anode lead wire, and a side to which the anode external terminal is connected. a heat-shrinkable insulating sleeve attached to the cathode layer on the opposite side; a cathode external terminal installed on the heat-shrinkable insulating sleeve; and a cathode external terminal and the cathode layer across the heat-shrinkable insulating sleeve. 1. A solid electrolytic capacitor element with a fuse, characterized by comprising a phase connecting the two, and an insulating exterior resin. 2. Connecting an anode external terminal to the anode lead wire of a solid electrolytic capacitor element having an anode lead wire led out and a cathode layer on the outermost layer, and heat shrinking the cathode layer on the side opposite to the side to which the anode external terminal is connected. a step of installing a negative external insulating sleeve, a step of installing a cathode external terminal to which a fuse is connected on the heat-shrinkable insulating sleeve, and a step of connecting a phase connected to the cathode external terminal across the heat-shrinkable insulating sleeve. A method for manufacturing a solid electrolytic capacitor with a fuse, comprising the steps of connecting the cathode layer and covering the cathode layer with an insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4335887A JPS63209117A (en) | 1987-02-25 | 1987-02-25 | Solid electrolytic capacitor with fuse and manufacture of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4335887A JPS63209117A (en) | 1987-02-25 | 1987-02-25 | Solid electrolytic capacitor with fuse and manufacture of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63209117A JPS63209117A (en) | 1988-08-30 |
| JPH0513531B2 true JPH0513531B2 (en) | 1993-02-22 |
Family
ID=12661629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4335887A Granted JPS63209117A (en) | 1987-02-25 | 1987-02-25 | Solid electrolytic capacitor with fuse and manufacture of the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63209117A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2621174B2 (en) * | 1987-04-27 | 1997-06-18 | 松下電器産業株式会社 | Manufacturing method of chip type capacitor with built-in fuse |
-
1987
- 1987-02-25 JP JP4335887A patent/JPS63209117A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63209117A (en) | 1988-08-30 |
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