JPH02202008A - Electrolytic capacitor - Google Patents
Electrolytic capacitorInfo
- Publication number
- JPH02202008A JPH02202008A JP2197289A JP2197289A JPH02202008A JP H02202008 A JPH02202008 A JP H02202008A JP 2197289 A JP2197289 A JP 2197289A JP 2197289 A JP2197289 A JP 2197289A JP H02202008 A JPH02202008 A JP H02202008A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic paper
- electrolytic
- hypophosphorous acid
- capacitor element
- solution
- 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 33
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 3
- 239000011888 foil Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract 2
- 230000002950 deficient Effects 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 description 8
- -1 hypophosphite ions Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 235000011007 phosphoric acid Nutrition 0.000 description 4
- 150000003016 phosphoric acids Chemical class 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- GQZXNSPRSGFJLY-UHFFFAOYSA-N hydroxyphosphanone Chemical compound OP=O GQZXNSPRSGFJLY-UHFFFAOYSA-N 0.000 description 3
- 229940005631 hypophosphite ion Drugs 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002500 ions Chemical class 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〕
この発明は電解コンデンサに関し、さらに詳しく言えば
、その電解紙に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an electrolytic capacitor, and more specifically, to an electrolytic paper thereof.
電解コンデンサの電解液にリン酸類を添加すると、化成
性もしくは耐圧性が向上することが知られている。第１
図は中圧用の電解液にリン酸類を添加した場合の電解液
の化成性を電圧−時間曲線（Ｖ−７１”カーブ）で示し
たもので、この図から見てる。It is known that adding phosphoric acids to the electrolytic solution of an electrolytic capacitor improves chemical conversion properties or pressure resistance. 1st
The figure shows the chemical formation properties of the electrolyte when phosphoric acids are added to the medium-pressure electrolyte using a voltage-time curve (V-71'' curve), as seen from this figure.
ところで、従来においては第２図に示されているように
、陰極箔１に対して順次筒１の電解紙２、陽極Ｍ３、第
２の電解紙４を積層し、これを巻回してコンデンサ素子
を形成したのち、電解液を含浸させるようにしている。By the way, conventionally, as shown in FIG. 2, the electrolytic paper 2 of the cylinder 1, the anode M3, and the second electrolytic paper 4 are laminated in order on the cathode foil 1, and this is wound to form a capacitor element. After forming, it is impregnated with an electrolyte.
しかしながら、これによるとリン酸類は電解紙の天然繊
維の作用を受け、電解紙中に均一に分布せず、特にコン
デンサ素子の中央部では必要なリン酸類が不足し、極端
な場合にはエージング中にショートバンクするなど耐圧
不足によるトラブルが発生することがあった。However, according to this, phosphoric acids are not uniformly distributed in the electrolytic paper due to the action of the natural fibers of the electrolytic paper, and the necessary phosphoric acids are insufficient especially in the center of the capacitor element, and in extreme cases, during aging. Problems such as short banking sometimes occurred due to insufficient withstand voltage.
上記課題を解決するため、この発明においては。 In order to solve the above problems, in this invention.
電解紙中に、コンデンサ素子の巻回前に予め次亜リン酸
を０．０３〜２．０ｗｔ％含有させるようにしている。The electrolytic paper is made to contain 0.03 to 2.0 wt% of hypophosphorous acid before winding the capacitor element.
含有させる方法は種々あるが、代表的な例を次に挙げる
。There are various ways to incorporate it, but typical examples are listed below.
（ａ）電解紙を抄紙するための液に所要量の次亜リン酸
を含有させ、その液にて抄紙する。(a) A required amount of hypophosphorous acid is added to a liquid for making electrolytic paper, and the liquid is used to make paper.
（ｂ）電解紙を抄紙した後に、所要量の次亜リン酸を含
有した液を用い、この液中に電解紙を浸漬するか、もし
くは同波を電解紙に吹き付ける。(b) After the electrolytic paper is made, a solution containing a required amount of hypophosphorous acid is used, and the electrolytic paper is immersed in this solution, or the same wave is sprayed onto the electrolytic paper.
（ｃ）上記（ａ） （ｂ）の組合せ。(c) A combination of (a) and (b) above.
上記のように、電解紙中に予め次亜リン酸を含有させた
ことにより、次亜リン酸の効果がコンデンサ素子の各部
にわたって十分発揮される。As described above, by pre-containing hypophosphorous acid in the electrolytic paper, the effect of hypophosphorous acid is fully exhibited throughout each part of the capacitor element.
（実施例１）電解紙に予め次亜リン酸イオンを２、Ｏｖ
ｔ％含有させ、この電解紙を第２図に示されているよう
に、アルミニウムの陰極箔と陽極箔の間および同陽極箔
の上に重ね、これを巻回してコンデンサ素子を形成した
のち、このコンデンサ素子に次亜リン酸イオンを含有し
ない電解液を含浸させた。(Example 1) 2 Ov of hypophosphite ions were added to electrolytic paper in advance.
t% of the electrolytic paper, and as shown in FIG. 2, the electrolytic paper was stacked between the aluminum cathode foil and the anode foil and on the anode foil, and then wound to form a capacitor element. This capacitor element was impregnated with an electrolytic solution containing no hypophosphite ions.
（実施例２）電解紙に予め次亜リン酸イオンを０．２ｖ
ｔ％含有させたのち、実施例１と同様にしてコンデンサ
素子を形成し、このコンデンサ素子に次亜リン酸イオン
を含有しない電解液を含浸させた。(Example 2) 0.2v of hypophosphite ion was added to electrolytic paper in advance.
After containing t%, a capacitor element was formed in the same manner as in Example 1, and this capacitor element was impregnated with an electrolytic solution containing no hypophosphite ions.
（実施例３）電解紙に予め次亜リン酸イオンを０．０３
ｗｔ％含有させたのち、実施例１と同様にしてコンデン
サ素子を形成し、このコンデンサ素子に次亜リン酸イオ
ンを含有しない電解液を含浸させた。(Example 3) Hypophosphite ion was added to electrolytic paper in advance by 0.03
After wt% content, a capacitor element was formed in the same manner as in Example 1, and this capacitor element was impregnated with an electrolytic solution containing no hypophosphite ions.
〈従来例１〉第２図に示されているように、アルミニウ
ムの陰極箔に対して順次第１の電解紙、アルミニウムの
陽極箔、第２の電解紙を積層し、これを巻回してコンデ
ンサ素子を形成したのち、次亜リン酸イオンを０．９７
ｗｔ％含む電解液に浸漬して、コンデンサ素子に電解液
を含浸させた。<Conventional Example 1> As shown in Fig. 2, a first electrolytic paper, an aluminum anode foil, and a second electrolytic paper are laminated in order on an aluminum cathode foil, and this is wound to form a capacitor. After forming the element, add 0.97% hypophosphite ion.
The capacitor element was impregnated with the electrolytic solution by immersing the capacitor element in an electrolytic solution containing wt%.
〈従来例２〉従来例１と同じくコンデンサ素子を形成し
たのち１次亜リン酸イオンを０．１０ｖｔ％含む電解液
に浸漬して、コンデンサ素子に電解液を含浸させた。<Conventional Example 2> A capacitor element was formed in the same manner as in Conventional Example 1, and then immersed in an electrolytic solution containing 0.10 vt% of primary hypophosphite ions to impregnate the capacitor element with the electrolytic solution.
上記実施例１〜３および従来例１，２ついて、エージン
グ中における耐圧不良発生率および初期特性の比較結果
を次表に示す、なお、コンデンサの定格は２５０Ｖ、
４７０μＦである。The comparison results of the breakdown voltage failure rate during aging and the initial characteristics of Examples 1 to 3 and Conventional Examples 1 and 2 are shown in the following table.The capacitor rating is 250V,
It is 470μF.
（表）
この表からこの発明によれば、従来例と比較して、耐圧
不良発生率を約１／１０に、また、漏れ電流を約１７２
に低下させることができ、次亜リン酸の効果が十分に確
認された。(Table) According to this table, compared to the conventional example, according to the present invention, the breakdown voltage failure rate is reduced to about 1/10, and the leakage current is reduced to about 172%.
The effect of hypophosphorous acid was fully confirmed.
また、第３図にこの発明による電解コンデンサと従来の
電解コンデンサをそれぞれ解体し、次亜リン酸イオンの
分布状態を示すが、曲線■にて示すようにこの発明に係
る電解コンデンサの方が曲線Ｉに示す従来の電解コンデ
ンサに比べて次亜リン酸の分布がコンデンサ素子５の上
端から下端にわたって殆ど均一であり１次亜リン酸の効
果がコンデンサ素子５の各部で十分発揮されることを裏
付けている。In addition, Fig. 3 shows the distribution of hypophosphite ions when an electrolytic capacitor according to the present invention and a conventional electrolytic capacitor are disassembled, and as shown by the curve ■, the electrolytic capacitor according to the present invention has a lower curve. Compared to the conventional electrolytic capacitor shown in I, the distribution of hypophosphorous acid is almost uniform from the upper end to the lower end of the capacitor element 5, which proves that the effect of primary hypophosphorous acid is fully exerted in each part of the capacitor element 5. ing.
第１図は電解液の化成性を電圧−時間曲線で示したグラ
フ、第２図はコンデンサ素子の陽極箔、陰極箔および電
解紙の積層状態を示した図、第３図は次亜リン酸イオン
の分布状態を示す図である。
図中、１は陰極箔、２，４は電解紙、３は陽極箔である
。
特許出願人 エルナー株式会社
代理人 弁理士 大 原 拓 也第
図
時間（分）
第
図
第
図
上端
中央
下端Figure 1 is a graph showing the chemical formation properties of the electrolyte as a voltage-time curve, Figure 2 is a diagram showing the laminated state of the anode foil, cathode foil, and electrolytic paper of a capacitor element, and Figure 3 is a graph showing the laminated state of the anode foil, cathode foil, and electrolytic paper of a capacitor element. FIG. 3 is a diagram showing a distribution state of ions. In the figure, 1 is a cathode foil, 2 and 4 are electrolytic paper, and 3 is an anode foil. Patent applicant Elnor Co., Ltd. Agent Patent attorney Takuya Ohara Diagram time (minutes) Diagram top center bottom edge
Claims (1)
したコンデンサ素子を備えた電解コンデンサにおいて、 上記電解紙中に、上記コンデンサ素子の巻回前に予め次
亜リン酸を０．０３〜２．０ｗｔ％含有させたことを特
徴とする電解コンデンサ。(1) In an electrolytic capacitor equipped with a capacitor element wound with electrolytic paper interposed between an anode foil and a cathode foil, hypophosphorous acid is added to the electrolytic paper in advance before winding the capacitor element. An electrolytic capacitor characterized by containing 0.03 to 2.0 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2197289A JPH02202008A (en) | 1989-01-31 | 1989-01-31 | Electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2197289A JPH02202008A (en) | 1989-01-31 | 1989-01-31 | Electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02202008A true JPH02202008A (en) | 1990-08-10 |
Family
ID=12069952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2197289A Pending JPH02202008A (en) | 1989-01-31 | 1989-01-31 | Electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02202008A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575666A (en) * | 2016-03-15 | 2016-05-11 | 深圳市金联信科技有限公司 | Preparation method of aluminum electrolytic capacitor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5734326A (en) * | 1980-08-11 | 1982-02-24 | Hitachi Condenser | Electrolyte for electrolytic condenser |
| JPS5776825A (en) * | 1980-10-30 | 1982-05-14 | Elna Co Ltd | Electrolytic condenser |
-
1989
- 1989-01-31 JP JP2197289A patent/JPH02202008A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5734326A (en) * | 1980-08-11 | 1982-02-24 | Hitachi Condenser | Electrolyte for electrolytic condenser |
| JPS5776825A (en) * | 1980-10-30 | 1982-05-14 | Elna Co Ltd | Electrolytic condenser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575666A (en) * | 2016-03-15 | 2016-05-11 | 深圳市金联信科技有限公司 | Preparation method of aluminum electrolytic capacitor |
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