JP2007103705A - Electrolyte impregnator and its impregnation method - Google Patents

Electrolyte impregnator and its impregnation method Download PDF

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JP2007103705A
JP2007103705A JP2005292228A JP2005292228A JP2007103705A JP 2007103705 A JP2007103705 A JP 2007103705A JP 2005292228 A JP2005292228 A JP 2005292228A JP 2005292228 A JP2005292228 A JP 2005292228A JP 2007103705 A JP2007103705 A JP 2007103705A
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liquid level
electrolytic solution
storage tank
capacitor element
electrolyte
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JP4552826B2 (en
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Yoshiaki Kuwata
義昭 桑田
Sunao Yamane
直 山根
Toshiyuki Hatake
稔行 畠
Kazuya Kawahara
一也 川原
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to CN200610073791.6A priority patent/CN100583330C/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrolyte impregnator and its impregnating method which accurately controls the liquid surface position of an electrolyte for capacitor elements to improve the impregnation without being directly subjected to the variation of a driver. <P>SOLUTION: A driver reciprocates a liquid level adjuster 5 relatively to a storing tank 3 containing an electrolyte 2 with capacitor elements 1 disposed on a fixture 4 to raise the liquid surface of the electrolyte 2, in the tank 3 up to the topsides of the capacitor elements 1 when pushing the adjuster 5 into the tank 3, thus dipping the capacitor elements 1 in the electrolyte 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、各種電子機器や車両用回路に使用されるアルミ電解コンデンサにおけるコンデンサ素子への電解液の含浸装置とその含浸方法に関するものである。   The present invention relates to an apparatus for impregnating an electrolytic solution into a capacitor element in an aluminum electrolytic capacitor used in various electronic devices and vehicle circuits, and a method for impregnating the same.

図９は従来のアルミ電解コンデンサにおけるコンデンサ素子に電解液を真空含浸させる含浸装置の概略図であり、陽極箔と陰極箔との間にセパレータを介在させて巻回することにより構成され、陽極箔と陰極箔に夫々リード線を接続したコンデンサ素子１４を、真空槽２１に設けた固定部１５に配置し、真空槽２１内を真空ポンプ２０により真空にしたのち、コンデンサ素子１４に電解液１７を含浸させるものである。   FIG. 9 is a schematic view of an impregnation apparatus for vacuum impregnating a capacitor element in a conventional aluminum electrolytic capacitor with a separator interposed between an anode foil and a cathode foil. Capacitor elements 14 each having lead wires connected to the cathode foil are arranged in a fixing portion 15 provided in a vacuum chamber 21, and the vacuum chamber 21 is evacuated by a vacuum pump 20. It is impregnated.

このように構成された従来の含浸装置は、真空圧経路を開閉するバルブ１８を開き、真空槽２１内を真空ポンプ２０により減圧し、所定の真空圧に到達後、電解液１７を貯留した収容槽１６を駆動装置により直接上昇させコンデンサ素子１４を電解液１７に浸漬させ、所定時間その状態を保持する。続いて、大気圧経路の開閉バルブ１９を開放し大気圧へ戻し、収容槽１６を下降させて、コンデンサ素子１４を取り出すという含浸装置であった（特許文献１）。
特開２００３−２１７９９１号公報 The conventional impregnation apparatus thus configured opens the valve 18 that opens and closes the vacuum pressure path, depressurizes the inside of the vacuum chamber 21 by the vacuum pump 20, and stores the electrolytic solution 17 after reaching a predetermined vacuum pressure. The tank 16 is directly raised by the driving device, the capacitor element 14 is immersed in the electrolytic solution 17, and the state is maintained for a predetermined time. Subsequently, the impregnation apparatus was configured to open the opening / closing valve 19 in the atmospheric pressure path to return to the atmospheric pressure, lower the storage tank 16, and take out the capacitor element 14 (Patent Document 1).
JP 2003-217991 A

しかし、上記従来の含浸装置では、収容槽１６を上下させる駆動系のばらつきを直接受けるため、コンデンサ素子１４に対する浸漬時の液面位置がばらつき、液面位置が高いとコンデンサ素子１４に接続されたリード線のアルミ丸棒部に電解液１７が付着する、また、液面位置が低いと含浸性を損なうという課題があった。   However, since the conventional impregnation apparatus directly receives the variation of the drive system that moves the storage tank 16 up and down, the liquid level position during immersion in the capacitor element 14 varies, and if the liquid level position is high, the capacitor element 14 is connected. There is a problem that the electrolytic solution 17 adheres to the aluminum round bar portion of the lead wire, and that the impregnation property is impaired when the liquid surface position is low.

本発明はこのような従来の課題を解決し、駆動系のばらつきを受けにくくし、電解液の液面位置を精度よくコントロールし、含浸性を向上させることができる含浸装置および含浸方法を提供することを目的とするものである。   The present invention solves such conventional problems, and provides an impregnation apparatus and an impregnation method that are less susceptible to variations in the drive system, can accurately control the liquid surface position of the electrolytic solution, and can improve the impregnation property. It is for the purpose.

上記課題を解決するために本発明は、コンデンサ素子を配置する固定部と、電解液を貯留する収容槽と、制御手段を有する駆動装置と、駆動装置を介して収容槽に対して相対的に進退可動とする液面調整体とを具備し、収容槽に対する液面調整体の突入により、収容槽の電解液の液面を上昇させ、上記コンデンサ素子をこの電解液中に浸漬させるようにした電解液の含浸装置とするものである。   In order to solve the above-described problems, the present invention provides a fixing unit for disposing a capacitor element, a storage tank for storing an electrolytic solution, a driving device having a control unit, and a relative to the storage tank via the driving device. A liquid level adjuster that is movable back and forth, and by the entry of the liquid level adjuster into the containing tank, the liquid level of the electrolytic solution in the containing tank is raised, and the capacitor element is immersed in the electrolytic solution. An apparatus for impregnating an electrolytic solution is provided.

また、前記含浸装置を用いて真空含浸する方法は、コンデンサ素子を真空ボックス内に設けられた固定部に配置する工程と、真空ボックス内を真空にする工程と、駆動装置により収容槽に貯留された電解液に対し液面調整体を相対的に突入させる工程と、液面調整体の突入により液面上昇した電解液中にコンデンサ素子を浸漬させる工程と、真空ボックス内を大気圧にする工程と、前記液面調整体を収容槽から取り出す工程を順次行うものである。   In addition, the method of vacuum impregnation using the impregnation device includes a step of placing the capacitor element in a fixing portion provided in the vacuum box, a step of evacuating the vacuum box, and a storage device storing the capacitor element in a storage tank. The step of relatively rushing the liquid level adjuster into the electrolytic solution, the step of immersing the capacitor element in the electrolyte that has risen due to the plunging of the liquid level adjuster, and the step of bringing the inside of the vacuum box to atmospheric pressure And the process of taking out the said liquid level adjustment body from a storage tank is performed sequentially.

この含浸装置の各構成よると、電解液に対する液面調整体の電解液への突入により電解液の液面を上昇させるので、駆動装置による液面調整体の相対的な移動距離を小さくでき、これにより、駆動系による電解液の液面位置のばらつきを受けにくく、電解液の液面位置を精度よくコントロールできるので、コンデンサ素子に接続したリード線に電解液が余分に付着することなく、コンデンサ素子の内部まで電解液を充分に含浸できるという効果が得られるものである。   According to each configuration of the impregnation apparatus, the liquid level of the electrolytic solution is raised by entering the electrolytic solution of the liquid level adjusting body with respect to the electrolytic solution, so that the relative moving distance of the liquid level adjusting body by the driving device can be reduced, As a result, the liquid level position of the electrolytic solution due to the drive system is less likely to vary, and the liquid level position of the electrolytic solution can be controlled with high precision, so that the electrolytic solution does not adhere excessively to the lead wire connected to the capacitor element. The effect that the electrolytic solution can be sufficiently impregnated to the inside of the element is obtained.

本発明の電解液の含浸装置は、コンデンサ素子を配置する固定部と、電解液を貯留する収容槽と、制御手段を有する駆動装置と、駆動装置を介して収容槽に対して相対的に進退可動とする液面調整体とを具備した電解液の含浸装置とするものである。   The electrolytic solution impregnation device according to the present invention includes a fixing portion for disposing the capacitor element, a storage tank for storing the electrolytic solution, a drive device having a control means, and a forward and backward movement relative to the storage tank via the drive device. The electrolytic solution impregnation apparatus includes a movable liquid level adjuster.

この各構成によると、収容槽に対する液面調整体の電解液突入により、収容槽の電解液の液面を上昇させ、上記コンデンサ素子をこの電解液中に浸漬させるようにしたことにより、駆動系のばらつきを受けにくくし、電解液の液面位置を精度よくコントロールでき、含浸性を向上させることができる。   According to each of these configurations, the liquid level adjuster enters the storage tank to increase the liquid level of the electrolytic solution in the storage tank, and the capacitor element is immersed in the electrolytic solution. This makes it possible to control the liquid surface position of the electrolytic solution with high accuracy and improve the impregnation property.

具体的には、収容槽および液面調整体のどちらか一方の位置を固定し、もう一方を駆動装置により進退させる、または、液面調整体および収容槽の双方を駆動装置により進退させることで、前記液面調整体を収容槽に貯留された電解液に突入させるものである。   Specifically, by fixing the position of one of the storage tank and the liquid level adjustment body and moving the other side forward and backward by the drive device, or by moving both the liquid level adjustment body and the storage tank by the drive device, The liquid level adjuster is plunged into the electrolyte stored in the storage tank.

収容槽の底面部に電解液を貯留するようした凹部を構成し、液面調整体をこの凹部に対して相対的に進退させるようにすれば、上記凹部に貯留した電解液のみを液面上昇に用いることができ、余分な電解液を使うことなくコンデンサ素子への電解液の含浸ができる。   If a recess is formed in the bottom of the storage tank to store the electrolyte, and the liquid level adjuster is moved back and forth relative to the recess, only the electrolyte stored in the recess is raised. The capacitor element can be impregnated with the electrolytic solution without using an extra electrolytic solution.

さらに、液面調整体の進退方向での断面積を変化させれば、電解液の液面上昇速度を制御できる。   Furthermore, if the cross-sectional area in the advancing / retreating direction of the liquid level adjusting body is changed, the liquid level rising speed of the electrolytic solution can be controlled.

具体的に、液面調整体の先端と終端に傾斜状のテーパーを設ければ、浸漬初期での液面上昇速度を徐々に早くし、浸漬終期での液面上昇速度を徐々に遅くすることでき、コンデンサ素子への電解液の含浸ばらつきを抑え、より精度の高い液面位置コントロールができる。   Specifically, if inclined tips are provided at the tip and end of the liquid level adjuster, the liquid level rise rate at the beginning of immersion is gradually increased, and the liquid level increase rate at the end of immersion is gradually decreased. It is possible to suppress the dispersion of the electrolytic solution into the capacitor element and to control the liquid surface position with higher accuracy.

またさらに、電解液の液面上昇がコンデンサ素子の上面部を越える余剰の電解液をオーバーフローさせ、調整槽に溜めるように収容槽を構成すれば、コンデンサ素子に接続したリード線に電解液が余分に付着することなく、コンデンサ素子の上面部まで浸漬させることにより、含浸性を向上させることができる。   Furthermore, if the storage tank is configured so that the excess electrolyte solution exceeding the upper surface of the capacitor element overflows and accumulates in the adjustment tank, the electrolyte solution is excessive in the lead wire connected to the capacitor element. It is possible to improve the impregnation property by immersing up to the upper surface portion of the capacitor element without adhering to the capacitor.

前記含浸装置を用いて電解液を含浸する方法は、コンデンサ素子を真空ボックス内に設けられた固定部に配置する工程と、真空ボックス内を真空にする工程と、駆動装置により収容槽に貯留された電解液に液面調整体を相対的に突入させる工程と、液面調整体の突入により液面上昇した電解液中にコンデンサ素子を浸漬させる工程と、真空ボックス内を大気圧にする工程と、前記液面調整体を収容槽から取り出す工程を順次行うようにするものである。   The method of impregnating the electrolytic solution using the impregnation device includes a step of placing the capacitor element in a fixed portion provided in the vacuum box, a step of evacuating the vacuum box, and a storage device storing the capacitor element in the storage tank. A step of relatively rushing the liquid level adjuster into the electrolyte, a step of immersing the capacitor element in the electrolyte that has risen due to the liquid level adjuster, and a step of bringing the inside of the vacuum box to atmospheric pressure. The step of taking out the liquid level adjuster from the storage tank is sequentially performed.

次に具体的な実施の形態について説明をするが、本発明はこれらの実施の形態に限定されるものではない。   Next, specific embodiments will be described, but the present invention is not limited to these embodiments.

（実施例１）
図１（ａ）〜（ｃ）において電解液の含浸装置は、被含浸体となるコンデンサ素子１を固定部４に配置し、電解液２が貯留された収容槽３に対して液面調整体５を駆動措置により進退させ、収容槽３の電解液２の液面がコンデンサ素子１の上面部まで上昇するようにしてある。 Example 1
1 (a) to 1 (c), an electrolytic solution impregnation apparatus has a capacitor element 1 to be impregnated in a fixed portion 4, and a liquid level adjuster for a storage tank 3 in which the electrolytic solution 2 is stored. 5 is moved forward and backward by a drive measure so that the liquid level of the electrolyte 2 in the storage tank 3 rises to the upper surface of the capacitor element 1.

上記収容槽３と液面調整体５は真空ボックス８の内部に配置され、この真空ボックス８には、真空ボックス８内を真空圧にする真空ポンプ６に接続された真空バルブ７と、前記真空ボックス８内を大気圧に戻すリークバルブ９とが設けられている。   The storage tank 3 and the liquid level adjuster 5 are disposed inside a vacuum box 8, and the vacuum box 8 includes a vacuum valve 7 connected to a vacuum pump 6 that makes the inside of the vacuum box 8 a vacuum pressure, and the vacuum A leak valve 9 for returning the inside of the box 8 to atmospheric pressure is provided.

前記液面調整体５は収容槽３に対して駆動装置により進退するようなっており、前記駆動装置とこの駆動装置を制御する制御手段は上記真空ボックス８の外に設けられている。   The liquid level adjuster 5 is advanced and retracted with respect to the storage tank 3 by a driving device, and the driving device and control means for controlling the driving device are provided outside the vacuum box 8.

具体的には、図２に示すように、収容槽３の位置を固定し、液面調整体５を駆動装置により進退させる方法、または、図３に示すように、液面調整体５の位置を固定し、収容槽３を駆動装置により進退させる方法、あるいは、図４に示すように、収容槽３および液面調整体５の双方を駆動装置により進退させる方法のいずれかにより、収容槽３に対する液面調整体５の突入により、収容槽３の電解液２の液面を上昇させるものである。   Specifically, as shown in FIG. 2, the position of the storage tank 3 is fixed, and the liquid level adjuster 5 is advanced and retracted by the driving device, or the position of the liquid level adjuster 5 is shown in FIG. The storage tank 3 is fixed by either the method of moving the storage tank 3 forward or backward by the driving device or the method of moving both the storage tank 3 and the liquid level adjuster 5 back and forth by the drive device as shown in FIG. The liquid level of the electrolytic solution 2 in the storage tank 3 is raised by the entry of the liquid level adjuster 5 into the storage tank 3.

前記電解液２はエチレングリコールやγ−ブチロラクトン等の有機溶媒と、マレイン酸、安息香酸、フタル酸等の有機カルボン酸やホウ酸等の無機酸からなる電解質とから構成されており、粘度が４〜１００ｍＰａ・ｓと比較的高いものである。   The electrolytic solution 2 is composed of an organic solvent such as ethylene glycol or γ-butyrolactone, and an electrolyte composed of an organic carboxylic acid such as maleic acid, benzoic acid, or phthalic acid, or an inorganic acid such as boric acid. It is relatively high as ˜100 mPa · s.

前記含浸装置においてコンデンサ素子１に電解液２を含浸させるには、まず、図１（ａ）に示すように、コンデンサ素子１の上面部の位置を揃え収容槽３に貯留された電解液２の液面と平行になるように、コンデンサ素子１を真空ボックス８内に設けられた固定部４に配置する。   To impregnate the capacitor element 1 with the electrolytic solution 2 in the impregnation apparatus, first, as shown in FIG. 1A, the position of the upper surface portion of the capacitor element 1 is aligned and the electrolytic solution 2 stored in the storage tank 3 is stored. Capacitor element 1 is arranged in fixing part 4 provided in vacuum box 8 so as to be parallel to the liquid surface.

次に、真空バルブ７を開放し、真空ボックス８内が真空ポンプ６により所定の真空圧に達したのちに、図１（ｂ）に示すように駆動装置による収容槽３に対する液面調整体５の突入により、収容槽３の電解液２の液面を固定部４に配置したコンデンサ素子１の上面部まで上昇させる、これにより、電解液２の中にコンデンサ素子１を浸漬させる。   Next, after the vacuum valve 7 is opened and the inside of the vacuum box 8 reaches a predetermined vacuum pressure by the vacuum pump 6, as shown in FIG. , The liquid level of the electrolytic solution 2 in the storage tank 3 is raised to the upper surface of the capacitor element 1 disposed in the fixed portion 4, whereby the capacitor element 1 is immersed in the electrolytic solution 2.

前記コンデンサ素子１の電解液２中での所定の時間浸漬により、コンデンサ素子１に電解液２を含浸させた後、真空ボックス８内をリークバルブ９により大気圧に戻す。このとき、コンデンサ素子１の内圧力と真空ボックス８内の圧力との差によりコンデンサ素子１への電解液２の含浸が促進される。   After the capacitor element 1 is impregnated with the electrolyte solution 2 by immersing the capacitor element 1 in the electrolyte solution 2 for a predetermined time, the inside of the vacuum box 8 is returned to atmospheric pressure by the leak valve 9. At this time, the impregnation of the electrolytic solution 2 into the capacitor element 1 is promoted by the difference between the internal pressure of the capacitor element 1 and the pressure in the vacuum box 8.

そして、図１（ｃ）に示すように収容槽３に対する液面調整体５の取出しにより、収容槽３の電解液２の液面を下降させ、電解液２を含浸させたコンデンサ素子１を得ることができる。   Then, as shown in FIG. 1C, by removing the liquid level adjuster 5 from the storage tank 3, the liquid level of the electrolytic solution 2 in the storage tank 3 is lowered to obtain the capacitor element 1 impregnated with the electrolytic solution 2. be able to.

前記電解液２に対する液面調整体５の電解液２への突入により、電解液２の液面を上昇させるので、電解液２の液面位置は駆動装置の振動や移動ばらつきの影響を受けにくく、また、電解液２の粘度が比較的高いことから、容易に液面位置のコントロールをすることができる。   The liquid level of the electrolytic solution 2 is raised by the entry of the liquid level adjuster 5 into the electrolytic solution 2 with respect to the electrolytic solution 2, so that the liquid level position of the electrolytic solution 2 is not easily affected by vibrations or movement variations of the driving device. Further, since the viscosity of the electrolytic solution 2 is relatively high, the liquid surface position can be easily controlled.

したがって、図５に示すように、コンデンサ素子１に接続されたリード線のアルミ丸棒部の下部で電解液２の液面を停止することができ、このコンデンサ素子１の上面部からも電解液２が含浸されるので、より均一な含浸を行うことができる。   Therefore, as shown in FIG. 5, the liquid surface of the electrolytic solution 2 can be stopped at the lower part of the aluminum round bar portion of the lead wire connected to the capacitor element 1, and the electrolytic solution can be also discharged from the upper surface portion of the capacitor element 1. Since 2 is impregnated, more uniform impregnation can be performed.

なお、前記コンデンサ素子１に電解液２を含浸させる工程を２〜３回繰り返すことにより、特にコンデンサ素子１の高さが１０ｍｍ以上のものについては、より均一な含浸を行うことができる。   In addition, by repeating the step of impregnating the capacitor element 1 with the electrolytic solution 2 to 3 times, particularly when the capacitor element 1 has a height of 10 mm or more, more uniform impregnation can be performed.

収容槽３の電解液２の液面がコンデンサ素子１の底面部に達する浸漬初期において、液面調整体５の突入速度を調整し、液面上昇をコントロールすることで、固定部４に配置した複数のコンデンサ素子１が同時に底面部から浸漬され、含浸開始時期のばらつきが抑えられる。   In the initial stage of immersion in which the liquid level of the electrolytic solution 2 in the storage tank 3 reaches the bottom surface of the capacitor element 1, the rush speed of the liquid level adjuster 5 is adjusted, and the rise in the liquid level is controlled, so that the liquid level adjuster 5 is arranged on the fixed part 4 A plurality of capacitor elements 1 are immersed from the bottom surface at the same time, and variations in impregnation start timing are suppressed.

同様に、浸漬時および含浸時において、コンデンサ素子１の上面部に位置する電解液２がコンデンサ素子１の内部に侵入することで、電解液２の液面下がるため、液面調整体５の突入を調整し、液面位置を保持することが含浸を促進するために好ましい。   Similarly, at the time of immersion and impregnation, the electrolyte 2 located on the upper surface portion of the capacitor element 1 enters the inside of the capacitor element 1, so that the level of the electrolyte 2 is lowered. In order to promote the impregnation, it is preferable to adjust the liquid level and maintain the liquid level position.

さらに、収容槽３の内壁に凹凸を設け、コンデンサ素子１と電解液２の接触により液面に発生する波を収容槽３の内壁に達することで打ち消すようにすることが好ましい。   Furthermore, it is preferable to provide unevenness on the inner wall of the storage tank 3 so that waves generated on the liquid surface due to the contact between the capacitor element 1 and the electrolyte 2 reach the inner wall of the storage tank 3 to cancel out.

電解液２の液温による流動性が変化し、コンデンサ素子１に対する含浸性が変化する場合は、収容槽３に温度調節装置を設け、電解液２の液温を調節し、含浸性をコントロールすることが好ましい。   When the fluidity of the electrolytic solution 2 changes depending on the liquid temperature and the impregnation property of the capacitor element 1 changes, a temperature adjusting device is provided in the storage tank 3, and the liquid temperature of the electrolytic solution 2 is adjusted to control the impregnation property. It is preferable.

さらにまた、収容槽３に貯留した電解液２を予備タンク（図示せず）からの補充により所定の液量に保つようにすれば、所定形状のコンデンサ素子１の含浸を駆動装置の所定設定で行えるため、連続的な含浸作業が可能になる。   Furthermore, if the electrolytic solution 2 stored in the storage tank 3 is maintained at a predetermined amount by replenishment from a reserve tank (not shown), the impregnation of the capacitor element 1 having a predetermined shape can be performed at a predetermined setting of the driving device. Since it can be performed, continuous impregnation work is possible.

固定部４に配置したコンデンサ素子１の上面部に到達した電解液２を検知する液面センサーを設け、検知信号を制御手段にフィードバックさせることで、電解液２の液面がコンデンサ素子１の上面部を超えないように駆動装置を制御することも可能である。   A liquid level sensor that detects the electrolytic solution 2 that has reached the upper surface portion of the capacitor element 1 disposed in the fixed portion 4 is provided, and the liquid level of the electrolytic solution 2 is changed to the upper surface of the capacitor element 1 by feeding back the detection signal to the control means. It is also possible to control the driving device so as not to exceed the section.

電解液２に浸漬したコンデンサ素子１の含浸を促進するために真空ボックス９内を大気圧に戻したが、加圧ポンプを用いて大気圧以上にすることでさらに含浸を促進することも可能である。   In order to promote the impregnation of the capacitor element 1 immersed in the electrolytic solution 2, the inside of the vacuum box 9 is returned to the atmospheric pressure, but it is also possible to further promote the impregnation by making the pressure higher than the atmospheric pressure using a pressure pump. is there.

（実施例２）
図６に示すように、収容槽１０の底面部に電解液を貯留するにした凹部を構成し、この収容槽１０の凹部に対して液面調整体５を相対的に進退させるようにしたものである。 (Example 2)
As shown in FIG. 6, a recess is formed in the bottom portion of the storage tank 10 to store the electrolyte, and the liquid level adjuster 5 is moved forward and backward relative to the recess of the storage tank 10. It is.

なお、実施例２は収容槽１０の構成が実施例１と異なるのみで、同作用を発揮する他の構成については実施例１の説明を援用する。   In addition, Example 2 only differs in the structure of the storage tank 10 from Example 1, and uses description of Example 1 for the other structure which exhibits the same effect | action.

上記構成において、収容槽１０の凹部形状を液面調整体５の外形に合わせ、固定部４の位置を調整することで、収容槽１０に貯留する電解液２が少なくても十分な含浸が可能になる。   In the above configuration, the concave shape of the storage tank 10 is matched to the outer shape of the liquid level adjuster 5 and the position of the fixing portion 4 is adjusted, so that sufficient impregnation is possible even with a small amount of electrolyte 2 stored in the storage tank 10. become.

特に上記収容槽１０の底面部をこの収容槽１０の凹部に貯留した電解液２の液面と平行にすることで、電解液２の使用を最小限に抑えることが可能となる。   In particular, the use of the electrolytic solution 2 can be minimized by making the bottom surface of the storage tank 10 parallel to the liquid surface of the electrolytic solution 2 stored in the recess of the storage tank 10.

この場合、上昇させる電解液２の液面が乱れないように、液面調整体５の突入および、速度収容槽１０の凹部と液面調整体５の間に十分な隙間を開けるなど収容槽１０の凹部および液面調整体５の形状については適宜調整するものとする。   In this case, the storage tank 10 is provided with a sufficient clearance between the entry of the liquid level adjuster 5 and the recess of the speed storage tank 10 and the liquid level adjuster 5 so that the liquid level of the electrolyte 2 to be raised is not disturbed. The recesses and the shape of the liquid level adjuster 5 are appropriately adjusted.

（実施例３）
先端と終端に傾斜状のテーパーを設けた液面調整体１１を用い、図７に示す構成にしたものである。なお、実施例３は液面調整体１１の構成が実施例１と異なるのみで、同作用を発揮する他の構成については実施例１の説明を援用する。 (Example 3)
A liquid level adjuster 11 having an inclined taper at the front end and the end is used, and the configuration shown in FIG. 7 is adopted. In addition, Example 3 differs only in the structure of the liquid level adjustment body 11 from Example 1, and uses description of Example 1 for the other structure which exhibits the same effect | action.

液面調整体１１の進退方向の断面積を変化させることにより、電解液の液面上昇速度を制御させるものである。   By changing the cross-sectional area of the liquid level adjuster 11 in the advancing / retreating direction, the liquid level rising speed of the electrolytic solution is controlled.

上記構成において、液面調整体１１の先端および終端が細いことにより、含浸の初期および終期において、収容槽３の電解液２の液面上昇が遅くなることで、含浸開始時期のばらつきを低減し、かつ含浸終期での液面コントロールの精度が向上することで含浸性を向上することができる。   In the above configuration, since the tip and end of the liquid level adjuster 11 are narrow, the rise in the liquid level of the electrolytic solution 2 in the storage tank 3 is delayed in the initial and final stages of impregnation, thereby reducing variations in impregnation start timing. And the impregnation property can be improved by improving the accuracy of liquid level control at the end of impregnation.

（実施例４）
図８に示すように、収容槽１２にコンデンサ素子１の上面部を越えないように上昇した余剰の電解液２を調整槽１３にオーバーフローさせる構成にしたものである。なお、実施例４は収容槽１２に調整槽１３を設けたことが実施例１と異なるのみで、同作用を発揮する他の構成については実施例１の説明を援用する。 Example 4
As shown in FIG. 8, the excess electrolytic solution 2 that has risen so as not to exceed the upper surface portion of the capacitor element 1 is allowed to overflow into the adjustment tank 13. The fourth embodiment is different from the first embodiment in that the accommodation tank 12 is provided with the adjusting tank 13, and the description of the first embodiment is used for other configurations that exhibit the same action.

また、この調整槽１３は予備タンク（図示しない）に繋がっており、調整槽１３に溜められる電解液２は液面調整体５が収容槽１２から取り出された後に、予備タンクより収容槽１２に補充されるものとする。   The adjustment tank 13 is connected to a reserve tank (not shown), and the electrolytic solution 2 stored in the adjustment tank 13 is transferred from the reserve tank to the storage tank 12 after the liquid level adjuster 5 is taken out of the storage tank 12. Shall be replenished.

上記構成において、液面調整体５の収容槽１２への突入による上昇する電解液２の液面は、コンデンサ素子１の上面部までしか上昇しないため液面コントロールの精度が向上する。   In the above configuration, the liquid level of the electrolyte 2 that rises due to the entry of the liquid level adjuster 5 into the storage tank 12 rises only to the upper surface of the capacitor element 1, so that the accuracy of liquid level control is improved.

（実施例５）
エッチング処理により粗面化した後に陽極酸化処理により誘電体酸化皮膜を形成したアルミニウム箔からなる陽極箔と、アルミニウム箔をエッチング処理した陰極箔を用い、夫々の陽陰極箔にリード線を接続し、前記陽極箔と陰極箔とをその間にセパレータ紙を介在させて巻回することにより巻き径１０ｍｍ×高さ２０ｍｍのコンデンサ素子を得た。 (Example 5)
Using an anode foil made of an aluminum foil having a dielectric oxide film formed by anodizing after roughening by etching, and a cathode foil obtained by etching the aluminum foil, the lead wires are connected to the respective positive cathode foils, By winding the anode foil and the cathode foil with separator paper interposed therebetween, a capacitor element having a winding diameter of 10 mm × height of 20 mm was obtained.

次に、前記実施例１の図１（ａ）〜（ｃ）に示した含浸装置を用いて、その固定部４に前記コンデンサ素子１を２０個配置し、また、収容槽３にエチレングリコール８０部、アジピン酸アンモニウム１０部、安息香酸６部、リン酸アンモニウム１部、水３部からなる粘度２８ｍＰａ・ｓの電解液２を所定量貯留した。   Next, using the impregnation apparatus shown in FIGS. 1 (a) to 1 (c) of Example 1, 20 capacitor elements 1 are arranged in the fixing part 4, and ethylene glycol 80 is placed in the storage tank 3. A predetermined amount of electrolyte solution 2 having a viscosity of 28 mPa · s, consisting of 10 parts of ammonium adipate, 6 parts of benzoic acid, 1 part of ammonium phosphate, and 3 parts of water was stored.

次に、真空バルブ７を開放して、真空ボックス８内を真空ポンプ６より所定の真空圧にした。続いて、液面調整体５を収容槽３に対する突入により、収容槽３の電解液２の液面をコンデンサ素子１の上面部まで上昇させて、電解液２の中にコンデンサ素子１を浸漬させた状態で所定時間保持した。   Next, the vacuum valve 7 was opened, and the inside of the vacuum box 8 was brought to a predetermined vacuum pressure from the vacuum pump 6. Subsequently, when the liquid level adjuster 5 enters the storage tank 3, the liquid level of the electrolytic solution 2 in the storage tank 3 is raised to the upper surface of the capacitor element 1, and the capacitor element 1 is immersed in the electrolytic solution 2. Held for a predetermined time.

次に、真空ボックス８内をリークバルブ９により大気圧に戻した後に、液面調整体５を収容槽３から取り出し、電解液２が含浸されたコンデンサ素子１を得た。   Next, after the inside of the vacuum box 8 was returned to atmospheric pressure by the leak valve 9, the liquid level adjuster 5 was taken out of the storage tank 3 to obtain the capacitor element 1 impregnated with the electrolytic solution 2.

このコンデンサ素子１を通常の方法で金属ケース内に挿入し、その開放端を封口ゴムで密封してアルミ電解コンデンサを得た。   The capacitor element 1 was inserted into a metal case by a normal method, and the open end was sealed with a sealing rubber to obtain an aluminum electrolytic capacitor.

（実施例６）
電解液の含浸する工程を２回繰り返し行ったものである。なお、実施例６は電解液の含浸する工程を２回繰り返し行ったことが実施例５と異なるのみで、同作用を発揮する他の構成については実施例５の説明を援用する。 (Example 6)
The step of impregnating with the electrolytic solution was repeated twice. In addition, Example 6 is different from Example 5 in that the step of impregnating the electrolytic solution was repeated twice, and the description of Example 5 is incorporated for other configurations that exhibit the same effect.

（比較例）
前記実施例５のコンデンサ素子及び電解液を用いて、前記従来の含浸装置でコンデンサ素子に電解液を含浸した以外は、前記実施例５と同様にしてアルミ電解コンデンサを得た。 (Comparative example)
An aluminum electrolytic capacitor was obtained in the same manner as in Example 5 except that the capacitor element and electrolyte of Example 5 were used to impregnate the capacitor element with the electrolyte using the conventional impregnation apparatus.

前記実施例５及び６と比較例のアルミ電解コンデンサについて、１０５℃で寿命試験を行った。その結果を（表１）に示す。   About the aluminum electrolytic capacitor of the said Examples 5 and 6 and a comparative example, the lifetime test was done at 105 degreeC. The results are shown in (Table 1).

Figure 2007103705
Figure 2007103705

（表１）から明らかなように、実施例５及び６のアルミ電解コンデンサは１０５℃の寿命試験を行っても、液漏れやパンクするといった不具合を発生することはなかった。   As is clear from Table 1, the aluminum electrolytic capacitors of Examples 5 and 6 did not cause a problem such as liquid leakage or puncture even when a life test at 105 ° C. was performed.

このように、本発明の電解液の含浸装置及びその含浸方法により、コンデンサ素子に接続したリード線に電解液が余分に付着することがなく、コンデンサ素子の内部まで電解液を充分に含浸することができるので、アルミ電解コンデンサの製品寿命を向上させることができる。   As described above, the electrolytic solution impregnation apparatus and the impregnation method of the present invention can sufficiently impregnate the electrolytic solution to the inside of the capacitor element without excessively adhering the electrolytic solution to the lead wire connected to the capacitor element. Therefore, the product life of the aluminum electrolytic capacitor can be improved.

なお、コンデンサ素子の高さが２０ｍｍ以上のもの、また、高粘性の電解液や高密度セパレータを用いたものについては、前記含浸工程を２回〜４回繰り返し行うことにより、コンデンサ素子に電解液を充分に含浸させることができる。   In the case of a capacitor element having a height of 20 mm or more, or a high-viscosity electrolyte solution or a high-density separator, the impregnation step is repeated 2 to 4 times so that the electrolyte solution is added to the capacitor element. Can be sufficiently impregnated.

本発明による電解液の含浸装置および含浸方法は、電解液に対する液面調整体の電解液への突入により電解液の液面を上昇させるので、駆動装置による液面調整体の相対的な移動距離を小さくでき、これにより、駆動系による電解液の液面位置のばらつきを受けにくく、電解液の液面位置を精度よくコントロールできるので、コンデンサ素子に接続したリード線に電解液が余分に付着することなく、コンデンサ素子の内部まで電解液を充分に含浸できるという効果を有し、各種電子部品回路や車両用回路に用いることができるアルミ電解コンデンサの電解液の含浸装置および含浸方法として提供することができる。   In the electrolytic solution impregnation apparatus and impregnation method according to the present invention, since the liquid level of the electrolytic solution is raised by the penetration of the liquid level adjustment body into the electrolytic solution with respect to the electrolytic solution, the relative moving distance of the liquid level adjustment body by the drive As a result, the liquid level position of the electrolytic solution due to the drive system is less likely to be affected, and the liquid level position of the electrolytic solution can be controlled with high accuracy, so that extra electrolyte is attached to the lead wire connected to the capacitor element. Without impregnating the inside of the capacitor element, the electrolytic solution can be sufficiently impregnated and provided as an electrolytic solution impregnation device and impregnation method for aluminum electrolytic capacitors that can be used in various electronic component circuits and vehicle circuits. Can do.

（ａ）は本発明の実施例１による含浸装置及びその工程概略図、（ｂ）は同含浸工程概略図、（ｃ）は同含浸工程概略図(A) is the impregnation apparatus by Example 1 of this invention, and its process schematic, (b) is the impregnation process schematic, (c) is the impregnation process schematic 同実施例１による液面調整体を駆動装置により進退させる含浸装置概略図Schematic diagram of impregnation device for advancing and retracting the liquid level adjuster according to the first embodiment by a driving device 同実施例１による収容槽を駆動装置により進退させる含浸装置概略図Schematic diagram of impregnation device for advancing and retracting the storage tank according to the first embodiment by a driving device 同実施例１による液面調整体および収容槽の双方を駆動装置により進退させる含浸装置概略図Schematic diagram of an impregnation apparatus for advancing and retracting both the liquid level adjuster and the storage tank according to the first embodiment by a driving device 同実施例１によるコンデンサ素子と電解液の液面を表す概略図Schematic showing the capacitor element according to Example 1 and the liquid level of the electrolytic solution 本発明の実施例２による含浸装置概略図Schematic diagram of impregnation apparatus according to embodiment 2 of the present invention 本発明の実施例３による含浸装置概略図Schematic diagram of impregnation apparatus according to Example 3 of the present invention 本発明の実施例４による含浸装置概略図Schematic diagram of impregnation apparatus according to Example 4 of the present invention 従来の含浸装置概略図Schematic diagram of conventional impregnation equipment

符号の説明Explanation of symbols

１ コンデンサ素子
２ 電解液
３，１０，１２ 収容槽
４ 固定部
５，１１ 液面調整体
６ 真空ポンプ
８ 真空ボックス
１３ 調整槽 DESCRIPTION OF SYMBOLS 1 Capacitor element 2 Electrolyte solution 3,10,12 Storage tank 4 Fixing part 5,11 Liquid level adjustment body 6 Vacuum pump 8 Vacuum box 13 Adjustment tank

Claims (9)

陽極箔と陰極箔との間にセパレータを介在させて巻回することにより構成され、陽極箔と陰極箔に夫々リード線を接続したコンデンサ素子に電解液を真空含浸する含浸装置であって、コンデンサ素子を配置する固定部と、電解液を貯留する収容槽と、制御手段を有する駆動装置を介して収容槽に対して相対的に進退可動とする液面調整体とを具備し、収容槽に対する液面調整体の突入により、収容槽の電解液の液面を上昇させ、上記コンデンサ素子をこの電解液中に浸漬させるようにした電解液の含浸装置。 An impregnation apparatus for vacuum impregnating an electrolytic solution into a capacitor element, which is constituted by winding a separator between an anode foil and a cathode foil and having lead wires connected to the anode foil and the cathode foil, respectively, A fixing portion for disposing the element; a storage tank for storing the electrolyte; and a liquid level adjuster that is movable forward and backward relative to the storage tank via a driving device having a control unit. An electrolytic solution impregnation apparatus in which the liquid level of the electrolytic solution in the storage tank is raised by the entry of the liquid level adjuster, and the capacitor element is immersed in the electrolytic solution. 液面調整体を進退させるようにした請求項１に記載の電解液の含浸装置。 2. The electrolytic solution impregnation apparatus according to claim 1, wherein the liquid level adjuster is advanced and retracted. 収容槽を進退させるようにした請求項１に記載の電解液の含浸装置。 2. The electrolytic solution impregnation apparatus according to claim 1, wherein the storage tank is advanced and retracted. 収容槽および液面調整体の双方を進退させるようにした請求項１に記載の電解液の含浸装置。 2. The electrolytic solution impregnation apparatus according to claim 1, wherein both the storage tank and the liquid level adjuster are advanced and retracted. 収容槽の底面部に電解液を貯留する凹部を設け、この凹部に対して液面調整体を相対的に進退させるようにした請求項１から４のいずれか１項記載の電解液の含浸装置。 5. The electrolytic solution impregnation apparatus according to claim 1, wherein a concave portion for storing an electrolytic solution is provided in a bottom portion of the storage tank, and the liquid level adjuster is relatively advanced and retracted relative to the concave portion. . 液面調整体の進退方向での断面積を変化させ、電解液の液面上昇速度を制御させるようにした請求項１から５のいずれか１項記載の電解液の含浸装置。 6. The electrolytic solution impregnation apparatus according to any one of claims 1 to 5, wherein a cross-sectional area of the liquid level adjuster in the advancing and retreating direction is changed to control a liquid surface rising speed of the electrolytic solution. 前記液面調整体の先端と終端に傾斜状のテーパーを設け、浸漬初期での液面上昇速度を徐々に早くし、浸漬終期での液面上昇速度を徐々に遅くするようにした請求項６に記載の電解液の含浸装置。 7. An inclined taper is provided at the tip and end of the liquid level adjuster so that the liquid level rise rate at the initial stage of immersion is gradually increased and the liquid level rise rate at the end of immersion is gradually decreased. The electrolytic solution impregnation apparatus according to 1. 収容槽に調整槽を設け、電解液の液面上昇がコンデンサ素子の上面部を越えないように余剰の電解液を調整槽にオーバーフローさせるようにした請求項１から７のいずれか１項記載の電解液の含浸装置。 The adjustment tank is provided in the storage tank, and excess electrolyte solution is allowed to overflow into the adjustment tank so that the rise of the electrolyte level does not exceed the upper surface of the capacitor element. Electrolyte impregnation equipment. 前記含浸装置を用いて、前記コンデンサ素子を真空ボックス内に設けられた固定部に配置する工程と、真空ボックス内を真空にする工程と、駆動装置により収容槽に貯留された電解液に対し液面調整体を相対的に突入させる工程と、液面調整体の突入により液面上昇した電解液中にコンデンサ素子を浸漬させる工程と、真空ボックス内を大気圧にする工程と、前記液面調整体を収容槽から取り出す工程を順次行う電解液の含浸方法。 Using the impregnation device, the step of disposing the capacitor element in a fixed portion provided in the vacuum box, the step of evacuating the vacuum box, and the electrolyte stored in the storage tank by the driving device A step of relatively rushing the surface adjustment body, a step of immersing the capacitor element in the electrolyte whose liquid level has risen due to the entry of the liquid level adjustment body, a step of bringing the inside of the vacuum box to atmospheric pressure, and the liquid level adjustment An electrolytic solution impregnation method for sequentially performing a step of removing a body from a storage tank.
JP2005292228A 2005-10-05 2005-10-05 Electrolyte impregnation apparatus and impregnation method Expired - Fee Related JP4552826B2 (en)

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CN115692042A (en) * 2022-11-15 2023-02-03 湖南锦络电子股份有限公司 A contain dipping machine for tantalum capacitor processing
CN115938823A (en) * 2023-02-14 2023-04-07 四川中星电子有限责任公司 Capacitor enabling equipment

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CN115692042A (en) * 2022-11-15 2023-02-03 湖南锦络电子股份有限公司 A contain dipping machine for tantalum capacitor processing
CN115938823A (en) * 2023-02-14 2023-04-07 四川中星电子有限责任公司 Capacitor enabling equipment
CN115938823B (en) * 2023-02-14 2023-05-09 四川中星电子有限责任公司 Capacitor energizing equipment

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JP4552826B2 (en) 2010-09-29

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