JPH0368123A - Manufacture of solid electrolytic capacitor - Google Patents
Manufacture of solid electrolytic capacitorInfo
- Publication number
- JPH0368123A JPH0368123A JP20423489A JP20423489A JPH0368123A JP H0368123 A JPH0368123 A JP H0368123A JP 20423489 A JP20423489 A JP 20423489A JP 20423489 A JP20423489 A JP 20423489A JP H0368123 A JPH0368123 A JP H0368123A
- Authority
- JP
- Japan
- Prior art keywords
- washer
- lead
- anode lead
- capacitor element
- heated
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000007787 solid Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 8
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 8
- 229920006015 heat resistant resin Polymers 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 13
- 239000011347 resin Substances 0.000 abstract description 13
- 230000015572 biosynthetic process Effects 0.000 abstract description 10
- 238000002844 melting Methods 0.000 description 14
- 230000008018 melting Effects 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 229910052731 fluorine Inorganic materials 0.000 description 5
- 239000011737 fluorine Substances 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920006367 Neoflon Polymers 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 2
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 229920006259 thermoplastic polyimide Polymers 0.000 description 2
- 240000001980 Cucurbita pepo Species 0.000 description 1
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 1
- 229920013653 perfluoroalkoxyethylene Polymers 0.000 description 1
- 229920003208 poly(ethylene sulfide) Polymers 0.000 description 1
- -1 polychlorotrifluoroethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は固体電解コンデンサの製造方法に関し、さら
に詳しく言えば、その陽極リードの保護手段に関するも
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 specifically, to a means for protecting an anode lead thereof.
第２図（、）には固体電解コンデンサの中核をなす典型
的な従来例としてのコンデンサ素子１が示されている。FIG. 2(,) shows a capacitor element 1 as a typical conventional example which forms the core of a solid electrolytic capacitor.
すなわち、このコンデンサ素子１は、例えばＴａやＮｂ
などの弁作用を有する金属粉末の焼結体からなり、その
一端部には陽極リード２が植設されている。陽極リード
２は焼結前にその一端が埋設されるか、もしくは焼結後
に例えば溶接により取付けられる。コンデンサ素子１の
表面には電解酸化により酸化皮膜が形成され、次いでそ
の上に半導体電解質（固体電解質）が生成される０例え
ば硝酸マンガンの含浸・熱分解を複数回繰り返すことに
より、半導体電解質としてのＭｎＯ，層が形成されるが
、その際、ＭｎＯ，が陽極リード２に這い上がるという
現象が生ずる。That is, this capacitor element 1 is made of, for example, Ta or Nb.
It is made of a sintered body of metal powder having a valve action, and an anode lead 2 is implanted at one end thereof. One end of the anode lead 2 is buried before sintering, or it is attached after sintering, for example by welding. An oxide film is formed on the surface of the capacitor element 1 by electrolytic oxidation, and then a semiconductor electrolyte (solid electrolyte) is formed on the surface. Although a MnO layer is formed, a phenomenon occurs in which MnO creeps up onto the anode lead 2.
これを防止するため、従来では第２図（ｂ）に示されて
いるように陽極リード２の導出部に例えば弗素樹脂板３
を被せたり、同図（ｃ）に示されているように陽極リー
ド２の導出部に例えばシリコン系樹脂４を塗布するよう
にしている。In order to prevent this, conventionally, as shown in FIG.
For example, a silicon resin 4 is applied to the lead-out portion of the anode lead 2 as shown in FIG. 2(c).
しかしながら、第２図（ｂ）に示す方法では、陽極リー
ド２との嵌合が緩い場合には樹脂板３が浮き上がり、Ｍ
ｎＯ，の這い上がり防止効果がないばかりか、陽極リー
ド２に外部リード線を溶接する場合に不具合を生ずる。However, in the method shown in FIG. 2(b), if the fitting with the anode lead 2 is loose, the resin plate 3 will rise and the M
Not only is there no effect of preventing nO from creeping up, but it also causes problems when welding the external lead wire to the anode lead 2.
すなわち、焼結体と陽極リードとの接続部は何ら保護さ
れないため、陽極リード２に外部リード線を溶接する際
の機械的ストレスもしくは外装樹脂の熱収縮ストレスな
どの影響をうけやすく、特性劣化特に漏れ電流の増加に
つながる。In other words, since the connection between the sintered body and the anode lead is not protected in any way, it is easily affected by mechanical stress when welding the external lead wire to the anode lead 2 or thermal shrinkage stress of the exterior resin, resulting in characteristic deterioration, especially This leads to an increase in leakage current.
他方、同図（ｃ）に示されている樹脂４の塗布による場
合には、焼結体と陽極リードとの接続部はそれによって
保護されるが、樹脂の滴下位置あるいは滴下量などの作
業性に難がある。On the other hand, in the case of applying resin 4 as shown in FIG. There is a problem.
この発明は上記した従来の欠点を解決するためになされ
たもので、その目的は、生産性を損なうことなくコンデ
ンサ素子と陽極リードの接続部を効果的に保護し得るよ
うにした固体電解コンデンサの製造方法を提供すること
にある。This invention was made to solve the above-mentioned conventional drawbacks, and the purpose is to provide a solid electrolytic capacitor that can effectively protect the connection between the capacitor element and the anode lead without impairing productivity. The purpose is to provide a manufacturing method.
上記目的を達成するため、この発明においては、Ｔａ
、 Ｎｂなどの弁作用を有する金属粉末の焼結体からな
り、その−・端部に陽極リードが植設されたコンデンサ
素子の陽極リード導出部に、熱可塑性高耐熱樹脂からな
るワッシャーを挿通し、コンデンサ素子の表面に電解酸
化にて酸化皮膜を形成する化成工程の途中で同ワッシャ
ーを加熱溶融させて陽極リード導出部に密着させるよう
にしている。In order to achieve the above object, in this invention, Ta
A washer made of a thermoplastic highly heat-resistant resin is inserted into the anode lead lead-out part of a capacitor element, which is made of a sintered body of metal powder having a valve action such as Nb, and has an anode lead implanted at its end. During the chemical conversion process in which an oxide film is formed on the surface of the capacitor element by electrolytic oxidation, the washer is heated and melted to adhere to the anode lead lead-out portion.
すなわち、この発明は第１化或（予備化成）後、ワッシ
ャを加熱溶融し、引き続き第２化成（本化酸）を行って
酸化皮膜を形成することに特徴を有している。That is, the present invention is characterized in that after the first formation (preliminary chemical formation), the washer is heated and melted, and then the second formation (main acid formation) is performed to form an oxide film.
ワッシャーのうち、比較的に融点の高いワッシャーを加
熱溶融するにあたっては、コンデンサ素子が例えばＴａ
粉末で形成されている場合、常圧で高温に保持するとそ
の金属表面が酸化し、遂には燃焼する危険があるが、予
め金属表面に電解酸化によって酸化皮膜が形成されたコ
ンデンサ素子は高温に耐えることができる。When heating and melting a washer with a relatively high melting point among washers, the capacitor element is made of Ta, for example.
If the capacitor element is made of powder and is held at high temperatures under normal pressure, the metal surface will oxidize and there is a risk of combustion, but capacitor elements with an oxide film formed on the metal surface through electrolytic oxidation can withstand high temperatures. be able to.
使用する熱可塑性高耐熱樹脂としては弗素系樹脂、例え
ば
ＰＦＡ（４−弗化エチレンとパーフロロアルコキシエチ
レンとの共重合体；融点３１０℃）、ＦＥＰ（４−弗化
エチレンと６弗化プロピレンとの共重合体；融点２１１
１（１℃）、Ｅ Ｔ Ｆ Ｅ （４−弗化エチレンとエ
チレンとの共重合体；融点２６０℃）、
ＰＶＤＥ（ポリビニリデンフルオライド；融点１７０℃
）。The thermoplastic highly heat-resistant resins used include fluorine-based resins, such as PFA (a copolymer of 4-fluoroethylene and perfluoroalkoxyethylene; melting point 310°C), FEP (a copolymer of 4-fluoroethylene and hexafluoropropylene), copolymer; melting point 211
1 (1°C), ETFE (copolymer of 4-fluorinated ethylene and ethylene; melting point 260°C), PVDE (polyvinylidene fluoride; melting point 170°C)
).
ＰＣＴＦＥ（ポリクロロトリフルオロエチレン；融点２
１０℃）
などが好ましいが、その他の樹脂としては例えばｐｐｓ
（ポリフェニレンサルファイド；融点２８５℃）ＰＥＥ
Ｋ （ポリエーテルエーテルケトン；融点３４０℃）、
ＰＥ５（ポリエーテルスルホオン；非晶質融点なし）、
ＴＰＩ（熱可塑ポリイミド；融点３８２℃）、また、弗
素樹脂（ＰＴＦＥ）と弗素系共重合体とのラミネート、
弗素樹脂（ＰＴＦＥ）とＰＥＥＫとのラミネート、弗素
樹脂（ＰＴＦＥ）とＰＥＳ、ＰＰＳとのラミネートなど
が例示される。PCTFE (polychlorotrifluoroethylene; melting point 2
10℃) is preferred, but other resins include, for example, pps
(Polyphenylene sulfide; melting point 285°C) PEE
K (polyetheretherketone; melting point 340°C),
PE5 (polyether sulfone; amorphous without melting point),
TPI (thermoplastic polyimide; melting point 382°C), laminate of fluororesin (PTFE) and fluorine copolymer,
Examples include a laminate of fluororesin (PTFE) and PEEK, and a laminate of fluororesin (PTFE) and PES or PPS.
ここで、第工図を参照してこの発明による固体電解コン
デンサの製造方法をより具体的に説明する。まず、同図
（ａ）に示されているように、熱可塑性高耐熱樹脂のフ
ィルムもしくはシートからなるワッシャー５をコンデン
サ素子１に見合った大きさにカットし、これを陽極リー
ド２に挿通したのち、同陽極リード２を適当なフープ材
６に溶接する。このフープ材６に取付けられた状態で次
工程に搬送される際、ワッシＪ＠−５は図示しないガイ
ド部材にて同図（ｂ）に示されているように、陽極リー
ド２の導出部に当てがわれるように位置決めされる５次
に、第１化成を行ったのち、ワッシャー５を加熱溶融し
、さらに第２化成を行って酸化皮膜を形成する。これに
より、ワッシャー５は同図（ｃ）に示されているように
溶融して陽極り−ド２の導出部に密着する。参照符号５
ａはその密着したものを示している。Here, the method for manufacturing a solid electrolytic capacitor according to the present invention will be explained in more detail with reference to the drawings. First, as shown in Figure (a), a washer 5 made of a film or sheet of thermoplastic highly heat-resistant resin is cut into a size suitable for the capacitor element 1, and then inserted into the anode lead 2. , the anode lead 2 is welded to a suitable hoop material 6. When the washer J@-5 is transported to the next process while attached to the hoop material 6, the washer J@-5 is attached to the lead-out part of the anode lead 2 by a guide member (not shown) as shown in FIG. Next, after performing the first chemical conversion, the washer 5 is heated and melted, and then the second chemical conversion is performed to form an oxide film. As a result, the washer 5 melts and comes into close contact with the lead-out portion of the anode electrode 2, as shown in FIG. 2(c). Reference number 5
A indicates the one in close contact.
上記の加熱溶融は一連の流れ工程において行うことがで
きるため、生産能力を下げることなく、陽極リード接続
部を強固に保護することができる。Since the above heating and melting can be performed in a series of flow steps, the anode lead connection portion can be strongly protected without reducing production capacity.
また、比較的に融点の高いワッシャーを加熱溶融する場
合においても、コンデンサ素子の表面には電解酸化によ
って酸化皮膜が形成されているため、燃焼してしまうよ
うな危険性は殆どない。Further, even when a washer having a relatively high melting point is heated and melted, there is almost no risk of combustion because an oxide film is formed on the surface of the capacitor element by electrolytic oxidation.
（実施例１）
外形寸法０．９４ Ｘ Ｌ、！Ｊ５ Ｘ Ｌ、０瓢のタ
ンタルコンデンサ素子の陽極リードに、弗素系フィルム
・ＰＦＡｒネオフロン」（商品名；ダイキン工業■製）
からなる厚さ０．２５ｍｍ１のワッシャーを挿通し、第
工化成後同ワッシャーを加熱溶融し、さらに第２化成を
行って電解酸化によりコンデンサ素子の表面に酸化皮膜
を施し、ＭｎＯ□層、カーボン層、銀層を順次形成し、
外部端子を接続したのち、外装樹脂（エポキシ）で被覆
し、定格電圧４Ｖ、静電容量１０μＦの固体電解コンデ
ンサを製作した。(Example 1) External dimensions: 0.94XL! For the anode lead of the tantalum capacitor element of J5 XL, 0 Gourd, use fluorine-based film PFAr Neoflon (product name: manufactured by Daikin Industries, Ltd.)
A washer with a thickness of 0.25 mm is inserted, and after the first chemical formation, the washer is heated and melted, and a second chemical formation is performed to apply an oxide film to the surface of the capacitor element by electrolytic oxidation, and to form an MnO□ layer and a carbon layer. , sequentially forming silver layers,
After connecting external terminals, it was covered with an exterior resin (epoxy) to produce a solid electrolytic capacitor with a rated voltage of 4 V and a capacitance of 10 μF.
（実施例２）
実施例１と同じコンデンサ素子の陽極リードに、ポリケ
トン系フィルム・ＰＥＥＫ ｒステイバーに２００Ｊ（
商品名：アイ・シー・アイジャパン■製）からなる厚さ
０．１ｍｍのワッシャーを挿通し、次いで電解酸化を行
ってコンデンサ素子の表面に酸化皮膜を施した（第１化
威）。しかるのち、同ワッシャーを加熱溶融し、さらに
電解酸化を行い酸化皮膜を形成した（第２化或）。そし
て、上記実施例１と同じく、ＭｎＯ□層、カーボン層、
銀層を順次形成し、外部端子を接続したのち、外装樹脂
（エポキシ）で被覆し、定格電圧４Ｖ、静電容量１０μ
Ｆの固体電解コンデンサを製作した。(Example 2) The anode lead of the same capacitor element as in Example 1 was coated with 200 J (
A washer with a thickness of 0.1 mm (trade name: IC Japan ■) was inserted, and then electrolytic oxidation was performed to form an oxide film on the surface of the capacitor element (Daiichi Kawei). Thereafter, the washer was heated and melted, and electrolytically oxidized to form an oxide film (second conversion). As in Example 1 above, the MnO□ layer, the carbon layer,
After sequentially forming a silver layer and connecting external terminals, it is covered with exterior resin (epoxy), and the rated voltage is 4V and the capacitance is 10μ.
A F solid electrolytic capacitor was manufactured.
（実施例３）
実施例上と同じコンデンサ素子の陽極リードに、厚み０
．１ｍの弗素樹脂（ＰＴＦＥ）シートと同じく厚み０．
１−の弗素系共重合体樹脂フィルムＰＦＡ ｒネオフロ
ン」（商品名；ダイキン工業■製）とをラミネートして
なる厚み０．２ｍのワッシャーを挿通し、実施例１と同
じく電解酸化による酸化皮膜形成途中で加熱して弗素系
共重合体樹脂フィルムを溶融させた。次いで、電解酸化
によりコンデンサ素子の表面に酸化皮膜を施しく第２化
成）、 ＭｎＯＪｍ、カーボン層、銀層を順次形威し、
外部端子を接続したのち、外装樹脂（エポキシ）で被覆
し、定格電圧４Ｖ。(Example 3) The anode lead of the same capacitor element as in the example above has a thickness of 0.
．． Same as the 1m fluororesin (PTFE) sheet, the thickness is 0.
A washer with a thickness of 0.2 m made by laminating the fluorine-based copolymer resin film "PFAr Neoflon" (trade name; manufactured by Daikin Industries, Ltd.) of 1-1 was inserted, and an oxide film was formed by electrolytic oxidation as in Example 1. The fluorine-based copolymer resin film was melted by heating in the middle. Next, an oxide film is applied to the surface of the capacitor element by electrolytic oxidation (second chemical formation), then a MnOJm layer, a carbon layer, and a silver layer are sequentially formed.
After connecting the external terminals, cover with exterior resin (epoxy) and have a rated voltage of 4V.
静電容量ｌＯμＦの固体電解コンデンサを製作した。A solid electrolytic capacitor with a capacitance of 10 μF was manufactured.
〔比較例１〕 実施例１と同じコンデンサ素子の陽極リードに。[Comparative example 1] For the anode lead of the same capacitor element as in Example 1.
ＴＦＥ （テトラフロロエチレン）からなる厚さ０．２
ｍｍのワッシャーを挿通し、電解酸化を行ってその表面
に酸化皮膜を施し、次いでＭｎＯ，層、カーボン層、銀
層を順次形成し、外部端子を接続したのち、外装樹脂（
エポキシ）で被覆し、定格電圧４Ｖ、静電容量１０μＦ
の固体電解コンデンサを製作した。Made of TFE (tetrafluoroethylene), thickness 0.2
A washer of mm was inserted, electrolytic oxidation was performed to form an oxide film on the surface, then an MnO layer, a carbon layer, and a silver layer were sequentially formed. After connecting external terminals, the exterior resin (
coated with epoxy), rated voltage 4V, capacitance 10μF
A solid electrolytic capacitor was manufactured.
（実施例４）
実施例１と同じコンデンサ素子の陽極リードに、ポリイ
ミド系フィルムｒＮｔＪ・ＴＰＩＪ （商品名；三井東
圧■製）からなる厚さ０．１＋ｍ■のワッシャーを挿通
し、実施例１と同じく電解酸化によりコンデンサ素子の
表面に酸化皮膜を形成した（第１化或）。次いで、ワッ
シャーを加熱溶融し、さらに電解酸化を行った（第２化
或）、シかるのち、 ＭｎＯ２層、カーボン層、銀層を
順次形威し、外部端子を接続したのち、外装樹脂（エポ
キシ）で被覆し、定格電圧１６Ｖ、静電容量３．３μＦ
の固体電解コンデンサを製作した。(Example 4) A washer with a thickness of 0.1+m made of polyimide film rNtJ/TPIJ (trade name; manufactured by Mitsui Toatsu) was inserted into the anode lead of the same capacitor element as in Example 1. Similarly, an oxide film was formed on the surface of the capacitor element by electrolytic oxidation (first formation). Next, the washer was heated and melted, and electrolytically oxidized (secondary oxidation). After that, two MnO layers, a carbon layer, and a silver layer were sequentially formed, external terminals were connected, and an exterior resin (epoxy) was applied. ), rated voltage 16V, capacitance 3.3μF
A solid electrolytic capacitor was manufactured.
〔比較例２〕
従来例１と同様にして定格電圧１６■、静電容量３．３
μＦの固体電解コンデンサを製作した。[Comparative example 2] Same as conventional example 1, rated voltage 16■, capacitance 3.3
A μF solid electrolytic capacitor was manufactured.
上記各実施例と比較例をそれぞれ１０，０００個用意し
、その静電容量Ｃａｐ （μＦ）、損失角の正接ｔａｎ
δ、漏れ電流ＬＣ（μＡ）、製品としての特性不良率（
％）、ＭｎＯ２這い上がり率（））を測定した結果（平
均値）を法衣に示す。10,000 pieces of each of the above examples and comparative examples were prepared, and their capacitance Cap (μF) and tangent of loss angle tan
δ, leakage current LC (μA), product characteristic defect rate (
%) and MnO2 creep-up rate ()), the results (average values) are shown on the vestibule.
（表）
この表から明らかなように、各実施例は特性不良率が従
来例の１／２〜１／３と改善されている。また、ＭｎＯ
□這い上がり率は各実施例ともに０％を記録している。(Table) As is clear from this table, the characteristic defect rate of each example is improved to 1/2 to 1/3 of that of the conventional example. Also, MnO
□The climbing rate was recorded as 0% in each example.
さらに、漏れ電流の値からして陽極外部端子溶接時のス
トレス、外装樹脂のストレスに対して顕著な緩和作用が
認められる。Furthermore, judging from the value of leakage current, a remarkable effect of alleviating the stress during welding of the anode external terminal and the stress of the exterior resin is recognized.
以上説明したように、この発明によれば、コンデンサ素
子の陽極リード導出部に熱可塑性高耐熱樹脂からなるワ
ッシャーを挿通して、同ワッシャーを加熱溶融させて陽
極リード導出部に密着させるようにしたことにより、一
連の流れ工程において、生産能力を下げることなく陽極
リード接続部を強固に保護することができる。また、比
較的に融点の高いワッシャーを加熱溶融する場合におい
ても、コンデンサ素子の表面には電解酸化によって酸化
皮膜が形成されているため、燃焼してしまうような危険
性は殆どない。As explained above, according to the present invention, a washer made of a thermoplastic highly heat-resistant resin is inserted into the anode lead lead-out part of a capacitor element, and the washer is heated and melted so as to be brought into close contact with the anode lead lead-out part. As a result, the anode lead connection portion can be strongly protected during a series of flow steps without reducing production capacity. Further, even when a washer having a relatively high melting point is heated and melted, there is almost no risk of combustion because an oxide film is formed on the surface of the capacitor element by electrolytic oxidation.
第１図（ａ）〜（Ｑ）はこの発明による固体電解コンデ
ンサの製造過程を示した説明図、第２図（ａ）〜（ｃ）
はそれぞれ従来例を示した説明図である。
図中、１はコンデンサ素子、２は陽極リード、５は熱可
塑性高耐熱樹脂からなるワッシャー、６はフープ材であ
る。FIGS. 1(a) to (Q) are explanatory diagrams showing the manufacturing process of a solid electrolytic capacitor according to the present invention, and FIGS. 2(a) to (c)
are explanatory diagrams showing conventional examples, respectively. In the figure, 1 is a capacitor element, 2 is an anode lead, 5 is a washer made of a thermoplastic highly heat-resistant resin, and 6 is a hoop material.
Claims (1)
結体からなり、その一端部に陽極リードが植設されたコ
ンデンサ素子の上記陽極リード導出部に、熱可塑性高耐
熱樹脂からなるワッシヤーを挿通し、上記コンデンサ素
子の表面に電解酸化にて酸化皮膜を形成する化成工程の
途中で同ワッシヤーを加熱溶融させて上記陽極リード導
出部に密着させることを特徴とする固体電解コンデンサ
の製造方法。(1) A washer made of a thermoplastic highly heat-resistant resin is attached to the anode lead lead-out part of the capacitor element, which is made of a sintered body of metal powder having a valve action such as Ta or Nb, and has an anode lead implanted at one end. A method for manufacturing a solid electrolytic capacitor, characterized in that the washer is heated and melted during a chemical conversion process in which an oxide film is formed on the surface of the capacitor element by electrolytic oxidation, and the washer is brought into close contact with the anode lead lead-out portion. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20423489A JPH0368123A (en) | 1989-08-07 | 1989-08-07 | Manufacture of solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20423489A JPH0368123A (en) | 1989-08-07 | 1989-08-07 | Manufacture of solid electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0368123A true JPH0368123A (en) | 1991-03-25 |
Family
ID=16487069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20423489A Pending JPH0368123A (en) | 1989-08-07 | 1989-08-07 | Manufacture of solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0368123A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4981862A (en) * | 1972-11-17 | 1974-08-07 |
-
1989
- 1989-08-07 JP JP20423489A patent/JPH0368123A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4981862A (en) * | 1972-11-17 | 1974-08-07 |
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