JP2621236B2 - Wound electrolytic capacitor with fuse - Google Patents
Wound electrolytic capacitor with fuseInfo
- Publication number
- JP2621236B2 JP2621236B2 JP62263454A JP26345487A JP2621236B2 JP 2621236 B2 JP2621236 B2 JP 2621236B2 JP 62263454 A JP62263454 A JP 62263454A JP 26345487 A JP26345487 A JP 26345487A JP 2621236 B2 JP2621236 B2 JP 2621236B2
- Authority
- JP
- Japan
- Prior art keywords
- fuse
- cathode
- foil
- anode
- lead wire
- 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 title claims description 29
- 239000011888 foil Substances 0.000 claims description 24
- 239000003792 electrolyte Substances 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 21
- 238000005476 soldering Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/14—Protection against electric or thermal overload
- H01G2/16—Protection against electric or thermal overload with fusing elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- 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 本発明はヒューズ機構を内蔵したヒューズ付捲回型電
解コンデンサに関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wound electrolytic capacitor with a fuse having a built-in fuse mechanism.
従来の技術 近年、電子機器の小型化・高密度化が図られており、
それと共に安全性に対する要求も高まっている。そし
て、電子部品個々についてもその安全性が要求されてお
り、特に固体電解コンデンサは、その故障の大部分が短
絡故障であることから、その対策が急がれている。例え
ば、回路の異常やコンデンサ自身の異常により短絡故障
が発生すると、内部素子に過電流が流れるため、発熱し
たり、発火してしまう危険性があり、周辺の電子部品や
回路基板に悪い影響を与えていた。2. Description of the Related Art In recent years, electronic devices have been reduced in size and density.
At the same time, the demand for safety is increasing. The safety of each electronic component is also required. Particularly, in the case of solid electrolytic capacitors, most of the failures are short-circuit failures. For example, if a short-circuit fault occurs due to an abnormality in the circuit or the capacitor itself, an overcurrent flows in the internal elements, which may cause heat or fire, which may adversely affect peripheral electronic components and circuit boards. Was giving.
そこで、従来はこの防止策としてコンデンサ内部にヒ
ューズ機構を備えたものが考え出されており、例えば第
５図に示すように、コンデンサ素子１の陽極リード線２
および陰極リード線３をコンデンサ素子１に隣接した端
子板４に接続し、そしてこの端子板４に設けられたヒュ
ーズ素子５を介して端子板陰極リード線６を引き出して
いた。To prevent this, conventionally, a device provided with a fuse mechanism inside the capacitor has been devised. For example, as shown in FIG.
In addition, the cathode lead wire 3 is connected to the terminal plate 4 adjacent to the capacitor element 1, and the terminal plate cathode lead wire 6 is drawn out through the fuse element 5 provided on the terminal plate 4.
発明が解決しようとする問題点 しかしながら、上記従来の技術では、ヒューズ５をコ
ンデンサ素子１に実装する場合、位置決めし穴あけ加工
を施したプリント配線板からなる端子板４に、ヒューズ
５および端子板陰極リード線６を接続してヒューズ付端
子板４を作製しなければならず、またこれをコンデンサ
素子１の陽極リード線２および陰極リード線３に接続す
る際に、余分なリード線を切断加工しなければならず、
そのため、製造工程が煩雑になるとと共に部品点数が多
くなっていた。Problems to be Solved by the Invention However, according to the above-described conventional technique, when the fuse 5 is mounted on the capacitor element 1, the fuse 5 and the terminal plate cathode are mounted on the terminal plate 4 made of a printed wiring board that is positioned and drilled. The lead wire 6 must be connected to form the terminal plate 4 with a fuse. When connecting the lead wire 6 to the anode lead wire 2 and the cathode lead wire 3 of the capacitor element 1, an extra lead wire is cut. Must be
Therefore, the manufacturing process becomes complicated and the number of parts increases.
さらに、ヒューズ５の実装時においては、ヒューズ５
を陰極リード線３に接続するために半田付け等の熱加工
が必要であり、そしてこの熱的なストレスにより、コン
デンサ素子１の特性を劣化させてしまう恐れがあった。Further, when mounting the fuse 5, the fuse 5
In this case, heat processing such as soldering is required to connect the lead wire to the cathode lead wire 3, and the thermal stress may deteriorate the characteristics of the capacitor element 1.
本発明はこのような従来の問題点を解決するものであ
り、ヒューズをコンデンサ素子へ実装する際の製造工数
を削減すると共に、部品点数を減らし、さらにヒューズ
実装時の熱的ストレスによるコンデンサ特性への影響を
なくすることを目的とするものである。The present invention solves such a conventional problem, and reduces the number of manufacturing steps when mounting a fuse on a capacitor element, reduces the number of parts, and further improves the capacitor characteristics due to thermal stress when mounting the fuse. It is intended to eliminate the influence of the above.
問題点を解決するための手段 上記目的を達成するために、本発明のヒューズ付捲回
型電解コンデンサは、ヒューズを陽極リード線もしくは
陰極リード線に直接接続し、かつこの陽極リード線およ
び陰極リード線はそれぞれ陽極箔および陰極箔に接続し
てこの陽極箔および陰極箔をその間にセパレータを介在
させて巻回し、これに電解液もしくは電解質を含浸させ
たものである。Means for Solving the Problems In order to achieve the above object, a wound electrolytic capacitor with a fuse according to the present invention comprises connecting a fuse directly to an anode lead or a cathode lead, and connecting the fuse to the anode lead and the cathode lead. The wires are connected to an anode foil and a cathode foil, respectively, and wound around the anode foil and the cathode foil with a separator interposed therebetween, and impregnated with an electrolyte or an electrolyte.
作用 上記構成によれば、ヒューズを陽極リード線もしくは
陰極リード線に直接接続しているため、ヒューズをコン
デンサ素子に実装する場合は、ヒューズが接続された陽
極リード線もしくは陰極リード線をそれぞれ陽極箔およ
び陰極箔に接続してこの陽極箔および陰極箔をその間に
セパレータを介在させて巻回することにより、コンデン
サ素子に実装することができ、これにより、従来のよう
な端子板を使用したり、ヒューズをコンデンサ素子のリ
ード線に半田付け等の熱加工により接続するという必要
もなくなるため、製造工数の大幅な削減が図れるととも
に、部品点数も大幅に削減することができ、しかもヒュ
ーズ実装時の熱的ストレスによるコンデンサ特性への影
響もなくすることができるものである。Operation According to the above configuration, since the fuse is directly connected to the anode lead or the cathode lead, when the fuse is mounted on the capacitor element, the anode lead or the cathode lead to which the fuse is connected is respectively connected to the anode foil. By connecting the anode foil and the cathode foil to the cathode foil and winding the anode foil and the cathode foil with a separator interposed therebetween, the anode foil and the cathode foil can be mounted on the capacitor element. There is no need to connect the fuse to the lead wire of the capacitor element by thermal processing such as soldering, so that the number of manufacturing steps can be significantly reduced and the number of parts can be significantly reduced. This can eliminate the influence on the capacitor characteristics due to the mechanical stress.
実施例 以下、本発明の一実施例について、図面を参照しなが
ら説明する。第３図（ａ），（ｂ）に示されるように、
ヒューズ７はヒューズ素子８を角型チップ状（2.0×1.2
5×0.5mm）に分割し、かつこのヒューズ素子８に鉄・銅
・アルミニウム等の金属からなる電極キャップ９を圧入
し、半田付けして形成される。Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 3 (a) and (b),
The fuse 7 has a fuse element 8 having a square chip shape (2.0 × 1.2
The fuse element 8 is formed by press-fitting an electrode cap 9 made of a metal such as iron, copper, or aluminum into the fuse element 8 and soldering.
また、第２図に示されるようにヒューズ７は、電極キ
ャップ９の片側に錫メッキした鉄線（0.6φ）のリード
線材10を溶接あるいは半田付けにより接続し、もう一方
に板厚が200〜300μｍ程度のアルミニウムまたは錫メッ
キした銅等の金属からなるリード線偏平部11を溶接ある
いは半田付けすることによりヒューズ付リード線12を形
成している。As shown in FIG. 2, the fuse 7 has a lead wire 10 of a tin-plated iron wire (0.6φ) connected to one side of an electrode cap 9 by welding or soldering, and a plate thickness of 200 to 300 μm on the other side. A lead wire 12 with a fuse is formed by welding or soldering a flat lead portion 11 made of a metal such as aluminum or tin-plated copper.
さらに、第１図に示すようにヒューズ付リード線12
は、陰極アルミニウムエッチド箔13に接続され、また通
常の陽極リード線14は陽極アルミニウムエッチド化成箔
15に接続され、これらをその間にセパレータ16を介在さ
せて巻回することにより、本実施例のヒューズ付捲回型
電解コンデンサが得られる。Further, as shown in FIG.
Is connected to the cathode aluminum etched foil 13, and the normal anode lead wire 14 is connected to the anode aluminum etched foil.
These are connected to and wound around them with a separator 16 interposed therebetween to obtain a wound electrolytic capacitor with a fuse of this embodiment.
なお、前記ヒューズ７として、第３図（ａ），（ｂ）
に示すように、厚さ0.5（mm）のアルミナセラミック基
板17上に、厚膜金ペーストを印刷塗布してAu膜18を形成
し、次にPb（37％）−Sn（63％）共晶ハンダ合金の微粉
末を熱可塑性樹脂、活性フラックスおよび溶剤等により
ペースト状にしたペースト部材19を、Au膜18上に印刷塗
布して乾燥固化させた合金密着型を用いている。FIGS. 3A and 3B show the fuse 7.
As shown in the figure, a thick gold paste is printed and applied on an alumina ceramic substrate 17 having a thickness of 0.5 (mm) to form an Au film 18, and then a Pb (37%)-Sn (63%) eutectic An alloy close contact type is used in which a paste member 19 in which a fine powder of a solder alloy is made into a paste with a thermoplastic resin, an active flux, a solvent, or the like is printed on an Au film 18 and dried and solidified.
そして前記ヒューズ７は、熱を感受して所定の温度
（約190℃）に達すると前記ペースト部材19が溶融してA
u膜18と低融点の合金を形成し、さらに活性フラックス
成分によって凝集・粒状化して電路を遮断する温度ヒュ
ーズとしての機能を果たすものである。When the fuse 7 senses heat and reaches a predetermined temperature (about 190 ° C.), the paste member 19 melts and
An alloy having a low melting point is formed with the u-film 18, and furthermore, it functions as a thermal fuse for interrupting an electric circuit by being aggregated and granulated by an active flux component.
次に、上述のような方法で構成したヒューズ付捲回型
電解コンデンサの漏れ電流特性について、定格16V47μ
Ｆの製品を例にして説明する。なお、第４図は本実施例
のコンデンサと従来例で述べたコンデンサとを同時に電
解液中に浸漬させ、定格電圧16Vを印加してその電流値
の経時変化を示したものである。Next, regarding the leakage current characteristics of the wound electrolytic capacitor with a fuse configured in the manner described above, a rating of 16V47μ
An example of the product F will be described. FIG. 4 shows the change with time of the current value when the capacitor of this embodiment and the capacitor described in the conventional example are simultaneously immersed in an electrolytic solution and a rated voltage of 16 V is applied.
第４図の結果から明らかなように、本実施例は従来例
よりも漏れ電流値を少なくすることができ、半田付けに
よるコンデンサへの熱的ストレスを解消していることが
わかる。As is clear from the results shown in FIG. 4, the present embodiment can reduce the leakage current value as compared with the conventional example, and eliminates thermal stress on the capacitor due to soldering.
発明の効果 以上の実施例の説明より明らかなように、本発明のヒ
ューズ付捲回型電解コンデンサは、ヒューズを陽極リー
ド線もしくは陰極リード線に直接接続しているため、ヒ
ューズをコンデンサ素子に実装する場合は、ヒューズが
接続された陽極リード線もしくは陰極リード線をそれぞ
れ陽極箔および陰極箔に接続してこの陽極箔および陰極
箔をその間にセパレータを介在させて巻回することによ
り、コンデンサ素子に実装することができ、これによ
り、従来のような端子板を使用したり、ヒューズをコン
デンサ素子のリード線に半田付け等の熱加工により接続
するという必要もなくなるため、製造工数の大幅な削減
が図れるとともに、部品点数も大幅に削減することがで
き、しかもヒューズ実装時の熱的ストレスによるコンデ
ンサ特性への影響もなくすることができるものである。Advantages of the Invention As is clear from the description of the above embodiments, the wound electrolytic capacitor with a fuse of the present invention has the fuse directly connected to the anode lead wire or the cathode lead wire, so that the fuse is mounted on the capacitor element. In this case, the anode lead wire or the cathode lead wire to which the fuse is connected is connected to the anode foil and the cathode foil, respectively, and the anode foil and the cathode foil are wound with a separator interposed therebetween, thereby forming a capacitor element. This eliminates the need to use a conventional terminal board or connect the fuse to the lead wire of the capacitor element by thermal processing such as soldering, which greatly reduces the number of manufacturing steps. The number of components can be greatly reduced, and the capacitor characteristics due to thermal stress during fuse mounting can be improved. Can be eliminated.
第１図は本発明の一実施例におけるヒューズ付捲回型コ
ンデンサの斜視図、第２図は同ヒューズ付リード線の斜
視図、第３図（ａ）および（ｂ）は同ヒューズ部材の斜
視図および断面図、第４図は他の実施例における定格電
圧印加時の漏れ電流の経時変化を示した特性図、第５図
は従来のヒューズ付捲回型コンデンサの斜視図である。 12……ヒューズ付リード線、13……陰極アルミニウムエ
ッチド箔、14……陽極リード線、15……陽極アルミニウ
ムエッチド化成箔、16……セパレータ。FIG. 1 is a perspective view of a wound type capacitor with a fuse in one embodiment of the present invention, FIG. 2 is a perspective view of the lead wire with the fuse, and FIGS. 3 (a) and (b) are perspective views of the fuse member. FIG. 4 is a characteristic diagram showing the change over time of leakage current when a rated voltage is applied in another embodiment, and FIG. 5 is a perspective view of a conventional wound-type capacitor with a fuse. 12: Lead wire with fuse, 13: Cathode aluminum etched foil, 14: Anode lead wire, 15: Anode aluminum etched chemical conversion foil, 16: Separator.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 関谷 和生 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 実開 昭54−90654（ＪＰ，Ｕ) 実開 昭55−156434（ＪＰ，Ｕ) 実開 昭54−65346（ＪＰ，Ｕ) 実開 昭57−166301（ＪＰ，Ｕ) ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuo Sekiya 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. −156434 (JP, U) Actually open 1979-65346 (JP, U) Actually open 157-166301 (JP, U)
Claims (1)
ド線に直接接続し、かつこの陽極リード線および陰極リ
ード線はそれぞれ陽極箔および陰極箔に接続してこの陽
極箔および陰極箔をその間にセパレータを介在させて巻
回し、これに電解液もしくは電解質を含浸させたヒュー
ズ付捲回型電解コンデンサ。A fuse is directly connected to an anode lead or a cathode lead, and the anode lead and the cathode lead are connected to an anode foil and a cathode foil, respectively, with the anode foil and the cathode foil having a separator therebetween. A wound electrolytic capacitor with a fuse that is wound with interposition and impregnated with electrolyte or electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62263454A JP2621236B2 (en) | 1987-10-19 | 1987-10-19 | Wound electrolytic capacitor with fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62263454A JP2621236B2 (en) | 1987-10-19 | 1987-10-19 | Wound electrolytic capacitor with fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01106417A JPH01106417A (en) | 1989-04-24 |
| JP2621236B2 true JP2621236B2 (en) | 1997-06-18 |
Family
ID=17389737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62263454A Expired - Lifetime JP2621236B2 (en) | 1987-10-19 | 1987-10-19 | Wound electrolytic capacitor with fuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2621236B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0321840U (en) * | 1989-07-12 | 1991-03-05 | ||
| JP4811246B2 (en) | 2006-09-07 | 2011-11-09 | パナソニック株式会社 | Capacitor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5490654U (en) * | 1977-12-09 | 1979-06-27 | ||
| JPS55156434U (en) * | 1979-04-27 | 1980-11-11 |
-
1987
- 1987-10-19 JP JP62263454A patent/JP2621236B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01106417A (en) | 1989-04-24 |
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