JPS6216507A - Manufacture of solid electrolytic capacitor - Google Patents
Manufacture of solid electrolytic capacitorInfo
- Publication number
- JPS6216507A JPS6216507A JP60155803A JP15580385A JPS6216507A JP S6216507 A JPS6216507 A JP S6216507A JP 60155803 A JP60155803 A JP 60155803A JP 15580385 A JP15580385 A JP 15580385A JP S6216507 A JPS6216507 A JP S6216507A
- Authority
- JP
- Japan
- Prior art keywords
- notch
- anode lead
- solid electrolytic
- capacitor element
- crushed
- 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 description 30
- 239000007787 solid Substances 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Thermistors And Varistors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は固体電解コンデンサの製造方法に関し、特にコ
ンデンサエレメントより導出された陽極リードへの切離
用のノツチ部の形成方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a solid electrolytic capacitor, and more particularly to a method for forming a notch for disconnecting an anode lead led out from a capacitor element.
一般にこの種固体電解コンデンサは例えば第５図に示す
ように、弁作用を有する金属粉末を円柱状に加圧成形し
焼結してなるコンデンサエレメントＡに予め弁作用を有
する金属線よりなる陽極リードＢを植立し、この陽極リ
ードＢの導出端の圧潰ｉ ＢａにＬ形の第１の外部リー
ド部材Ｃを溶接すると共に、ストレート状の第２の外部
リード部材りをコンデンサエレメントＡの電極引出し層
Ｅに半田付けし、かつコンデンサエレメントＡの全周面
を樹脂材Ｆにて被覆して構成されている。In general, this type of solid electrolytic capacitor has a capacitor element A made by press-molding metal powder having a valve action into a cylindrical shape and sintering it, and an anode lead made of a metal wire that has a valve action in advance, as shown in Fig. 5. B is planted, an L-shaped first external lead member C is welded to the crushed iBa of the output end of the anode lead B, and a straight second external lead member is connected to the electrode drawer of the capacitor element A. The capacitor element A is soldered to the layer E, and the entire circumferential surface of the capacitor element A is covered with a resin material F.
ところで、陽極リードＢへの第１の外部リード部材Ｃの
溶接に先立って、陽極リードＢには第６図に示すように
、下面に平坦部を有するつぶし刃Ｇとノツチ刃Ｈとを一
体化してなる成形体によって圧潰部Ｂａとノツチ部Ｂｂ
とが同時に形成されている。By the way, prior to welding the first external lead member C to the anode lead B, as shown in FIG. The crushed part Ba and the notch part Bb are formed by the molded body made of
are formed at the same time.
ソシて、コンデンサエレメントＡとノツチ部Ｂ ｂとの
間に位置する圧潰部Ｂａに第１の外部リード部材Ｃを溶
接した後、陽極リードＢの不要部分がノツチ部Ｂｂより
切１ｉ１１１されている。After welding the first external lead member C to the crushed portion Ba located between the capacitor element A and the notch portion Bb, an unnecessary portion of the anode lead B is cut off from the notch portion Bb.
しかし乍ら、陽極リードＢの表面にはコンデンサニレメ
ン）Ａへの化成処理時に、誘電体としての酸化層が形成
される。特に、陽極リードＢとしてタンクルを用いる場
合、五酸化タンタル（’ｌ”ａ。However, an oxide layer as a dielectric is formed on the surface of the anode lead B during the chemical conversion treatment into the capacitor A. In particular, when tankle is used as the anode lead B, tantalum pentoxide ('l"a.
０、）が形成される。この酸化層はタンタルの硬度が大
きいことにも関連してそれ以上に硬いものである。0, ) is formed. This oxide layer is even harder due to the greater hardness of tantalum.
従って、上述の成形体によって陽極リードＢに圧潰部１
〕７．つびノツチ部Ｂｂを同時に形成する際に、酸化層
の存在によってノツチ刃Ｈの摩耗が激しく、例えば４〜
５万回程度で所望のノツチ部Ｂｂが形成できなくなる。Therefore, the compressed portion 1 is formed on the anode lead B by the above molded body.
]7. When forming the notch portion Bb at the same time, the notch blade H is severely worn due to the presence of the oxidized layer.
After about 50,000 times, the desired notch Bb cannot be formed.
その上、所望のノツチ部Ｂ、ｊ＋が形成できにくいこと
に関連して圧潰部Ｂａのつぶし量にもバラツキが生じ、
第１の外部リード部材Ｃの溶接性の信頼性も損なわれる
という問題がある。Furthermore, in connection with the difficulty in forming the desired notches B and j+, variations occur in the amount of crushing of the crushing portions Ba.
There is a problem in that the reliability of weldability of the first external lead member C is also impaired.
それ故に、本発明の目的は簡単な構成によって長期間に
亘って所望のノツチ部を確実に形成できる上、外部リー
ド部材と陽ｉ １Ｊ−ドとの溶接の確実性をも高めうる
固体電解コンデンサの製造方法を提供することにある。Therefore, an object of the present invention is to provide a solid electrolytic capacitor that can reliably form a desired notch portion over a long period of time with a simple configuration, and can also improve the reliability of welding between the external lead member and the positive electrode. The purpose of this invention is to provide a method for manufacturing the same.
従って、本発明は上述の目的を達成するために、弁作用
を有する金属粉末にて構成してなるコンデンサエレメン
トより導出した陽極リードを部分的に圧潰する工程と、
圧潰部分の非コンデンサエレメント側にノツチ部を形成
する工程と、コンデンサエレメントと陽極リードのノツ
チ部との間の圧潰部分に外部リード部材を溶接する工程
と、陽極リードをノ、ソチ部より切離する工程とを経て
製造するものである。Therefore, in order to achieve the above-mentioned object, the present invention includes a step of partially crushing an anode lead led out from a capacitor element made of metal powder having a valve action;
A process of forming a notch part on the non-capacitor element side of the crushed part, a process of welding an external lead member to the crushed part between the capacitor element and the notch part of the anode lead, and separating the anode lead from the notch part. It is manufactured through the process of
〔作用］
この発明によれば、陽極リードに圧潰部を形成した後、
その圧潰部にノツチ部が形成される関係で、ノツチ部の
形成量が少ない上、ノツチ部の形°酸部分の酸化層もか
なり破壊されている。従って、ノツチ部を形成する際の
ノツチ刃に対する影響は軽減され、寿命を大巾に延長で
きるし、又、外部リード部材の陽極リードへの溶接も確
実に行うことができる。[Function] According to the present invention, after forming the crushed portion on the anode lead,
Since the notch part is formed in the crushed part, not only the amount of the notch part formed is small, but also the oxidized layer of the formed acid part of the notch part is considerably destroyed. Therefore, the influence on the notch blade when forming the notch portion is reduced, the service life can be greatly extended, and the external lead member can be reliably welded to the anode lead.
次に本発明に係る固体電解コンデンサについて第１図を
参照して説明する。Next, a solid electrolytic capacitor according to the present invention will be explained with reference to FIG.
図において、１は弁作用を有する金属粉末を円柱状に加
圧成形し焼結してなるコンデンサエレメントであって、
それの中心には金属粉末の加圧成形に先立って、弁作用
を有する金属線が陽極り−ド２として植立されている。In the figure, 1 is a capacitor element made by press-molding metal powder having a valve action into a cylindrical shape and sintering it,
A metal wire having a valve action is installed as an anode electrode 2 in the center thereof prior to pressure molding of the metal powder.
そして、この陽極リード２の導出端には圧潰部２ａが形
成されており、その圧潰部２ａには例えばＬ形の第１の
外部り−ド部材３が溶接されている。この第１の外部リ
ード部材３と同一方向に導出される第２の外部リード部
材４の一端はコンデンサエレメント１の電極引出し層５
に半田付けされている。そして、コンデンサエレメント
１の全周面は樹脂材６にて被覆されている。A crushed portion 2a is formed at the lead-out end of the anode lead 2, and a first external lead member 3, which is, for example, L-shaped, is welded to the crushed portion 2a. One end of the second external lead member 4 led out in the same direction as the first external lead member 3 is connected to the electrode lead layer 5 of the capacitor element 1.
is soldered to. The entire circumferential surface of the capacitor element 1 is covered with a resin material 6.
このように構成されたコンデンサは例えば第２図〜第４
図に示すようにして製造される。まず、第２図に示すよ
うに、コンデンサエレメント１より導出された陽極リー
ド２を、対向面に平坦部を有する一対のつぶし刃７．７
にて圧潰し、上下面に圧潰部２ａを形成する。尚、この
圧潰部２ａの形成によって、圧潰部分の酸化層はかなり
破壊される。次に、第３図に示すように、陽極リード２
の圧潰部２ａにおける非コンデンサエレメント側に、６
０６程度の角度を有するノツチ刃８，８によってノツチ
部２ｂを形成する。次に、第４図に示すように、陽極リ
ード２の圧潰部２ａに第１の外部リード部材３を交叉さ
せて溶接する。次に、陽ｌｉリード２の不要部分をノツ
チ部２ｂより切離する。以下通常の方法によって第１図
に示す固体電解コンデンサが製造される。Capacitors configured in this way are shown in Figures 2 to 4, for example.
It is manufactured as shown in the figure. First, as shown in FIG.
to form crushed portions 2a on the upper and lower surfaces. By the way, the formation of the crushed portion 2a considerably destroys the oxidized layer in the crushed portion. Next, as shown in FIG.
6 on the non-capacitor element side in the crushed portion 2a of
The notch portion 2b is formed by the notch blades 8, 8 having an angle of approximately 0.06 mm. Next, as shown in FIG. 4, the first external lead member 3 is crossed and welded to the crushed portion 2a of the anode lead 2. Next, the unnecessary portion of the positive Li lead 2 is cut off from the notch portion 2b. The solid electrolytic capacitor shown in FIG. 1 is manufactured by a conventional method.
本発明者は陽極リード２として０３φ間のタンタル線を
用い、ノツチ刃８の耐久性を測定した処、１０万回ノソ
千部２ｂの形成動作をさせても、ノツチ部２ｂの形状、
深さに何ら異常は認められなかった。これは圧潰部２ａ
の表面の酸化層が充分に破壊されており、その上、ノツ
チ部２ｂの形成深さが浅いことによると考えられる。The inventor of the present invention measured the durability of the notch blade 8 using a tantalum wire with a diameter of 0.3 mm as the anode lead 2, and found that even if the notch part 2b was formed 100,000 times, the shape of the notch part 2b remained unchanged.
No abnormality was observed in the depth. This is the crushed part 2a
This is thought to be due to the fact that the oxide layer on the surface of the notch 2b has been sufficiently destroyed and, in addition, the notch 2b is formed to a shallow depth.
以上のように本発明によれば、陽極リードに圧潰部を形
成し、その圧潰部にノツチ部が形成される関係で、酸化
層が充分に破壊され、かつノツチ部の形成化も浅くでき
る。従って、ノツチ部の形成時におけるノツチ刃の摩耗
を軽減でき、長寿命化できる。As described above, according to the present invention, the crushed portion is formed in the anode lead and the notched portion is formed in the crushed portion, so that the oxidized layer is sufficiently destroyed and the notched portion can be formed shallowly. Therefore, the wear of the notch blade during formation of the notch portion can be reduced, and the life of the notch blade can be extended.
その上、圧潰部はノツチ部の形成状態に全く左右される
ことなく形成できるために、外部リード部材の圧潰部へ
の溶接を確実に行うことができる。Furthermore, since the collapsed portion can be formed completely independent of the state of formation of the notch portion, the external lead member can be reliably welded to the collapsed portion.
第１図は本発明に係る固体電解コンデンサの正断面図、
第２図は陽極リードへの圧潰部の形成状態を示す側面図
、第３図はノツチ部の形成状態を示す側面図、第４図は
圧潰部への第１の外部リード部材の溶接状態を示す側面
図、第５図は従来例の正断面図、第６図は陽極リードへ
の圧潰部、ノツチ部の形成状態を示す側面図である。
図中、１はコンデンサエレメント、２は陽極リード、２
ａは圧潰部、２ｂはノツチ部、３は外部リード部材、７
はつぶし刃、８はノツチ刃である。
第 １ｖ！Ｊ
（正断面図）
第２図
第３図
２ａ２ｂ’１FIG. 1 is a front sectional view of a solid electrolytic capacitor according to the present invention,
Fig. 2 is a side view showing how the crushed portion is formed on the anode lead, Fig. 3 is a side view showing how the notch is formed, and Fig. 4 shows how the first external lead member is welded to the crushed portion. FIG. 5 is a front sectional view of the conventional example, and FIG. 6 is a side view showing how the crushed portion and notch portion are formed on the anode lead. In the figure, 1 is a capacitor element, 2 is an anode lead, 2
a is a crushed portion, 2b is a notch portion, 3 is an external lead member, 7
8 is a crushing blade, and 8 is a notch blade. 1st v! J (Front sectional view) Fig. 2 Fig. 3 2a2b'1
Claims (3)
ンサエレメントより導出した陽極リードを部分的に圧潰
する工程と、圧潰部分の非コンデンサエレメント側にノ
ッチ部を形成する工程と、コンデンサエレメントと陽極
リードのノッチ部との間の圧潰部分に外部リード部材を
溶接する工程と、陽極リードをノッチ部より切離する工
程とを含むことを特徴とする固体電解コンデンサの製造
方法。(1) A process of partially crushing the anode lead led out from a capacitor element made of metal powder having a valve action, a process of forming a notch part on the non-capacitor element side of the crushed part, and a process of forming the anode lead from the capacitor element. A method for manufacturing a solid electrolytic capacitor, comprising the steps of welding an external lead member to the crushed portion between the anode lead and the notch, and separating the anode lead from the notch.
ていることを特徴とする特許請求の範囲第１項に記載の
固体電解コンデンサの製造方法。(2) The method for manufacturing a solid electrolytic capacitor according to claim 1, wherein the anode lead is made of a metal wire having a valve action.
にて構成されていることを特徴とする特許請求の範囲第
１項に記載の固体電解コンデンサの製造方法。(3) The method for manufacturing a solid electrolytic capacitor according to claim 1, wherein the capacitor element and the anode lead are made of tantalum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60155803A JPS6216507A (en) | 1985-07-15 | 1985-07-15 | Manufacture of solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60155803A JPS6216507A (en) | 1985-07-15 | 1985-07-15 | Manufacture of solid electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6216507A true JPS6216507A (en) | 1987-01-24 |
| JPH0523047B2 JPH0523047B2 (en) | 1993-03-31 |
Family
ID=15613787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60155803A Granted JPS6216507A (en) | 1985-07-15 | 1985-07-15 | Manufacture of solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6216507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003168626A (en) * | 2001-11-28 | 2003-06-13 | Samsung Electro Mech Co Ltd | Improved tantalum capacitor with lead frame |
| JP2013251543A (en) * | 2012-05-30 | 2013-12-12 | Avx Corp | Notched leads for solid electrolytic capacitors |
| JP2017073540A (en) * | 2015-08-04 | 2017-04-13 | エイブイエックス コーポレイション | Low ESR anode lead tape for solid electrolytic capacitor |
-
1985
- 1985-07-15 JP JP60155803A patent/JPS6216507A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003168626A (en) * | 2001-11-28 | 2003-06-13 | Samsung Electro Mech Co Ltd | Improved tantalum capacitor with lead frame |
| JP2013251543A (en) * | 2012-05-30 | 2013-12-12 | Avx Corp | Notched leads for solid electrolytic capacitors |
| JP2017073540A (en) * | 2015-08-04 | 2017-04-13 | エイブイエックス コーポレイション | Low ESR anode lead tape for solid electrolytic capacitor |
| JP2021093545A (en) * | 2015-08-04 | 2021-06-17 | エイブイエックス コーポレイション | Low esr anode lead tape for solid electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0523047B2 (en) | 1993-03-31 |
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