Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP5268591B2 - Electrolytic capacitor - Google Patents
[go: Go Back, main page]

JP5268591B2 - Electrolytic capacitor - Google Patents

Electrolytic capacitor Download PDF

Info

Publication number
JP5268591B2
JP5268591B2 JP2008302473A JP2008302473A JP5268591B2 JP 5268591 B2 JP5268591 B2 JP 5268591B2 JP 2008302473 A JP2008302473 A JP 2008302473A JP 2008302473 A JP2008302473 A JP 2008302473A JP 5268591 B2 JP5268591 B2 JP 5268591B2
Authority
JP
Japan
Prior art keywords
lead
foil
rivet
external terminal
lead foil
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.)
Active
Application number
JP2008302473A
Other languages
Japanese (ja)
Other versions
JP2010129756A (en
Inventor
利幸 高野
清治 山口
敦 平山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAFC Energy Technology Inc.
Lincstech Circuit Co Ltd
Original Assignee
AAFC Energy Technology Inc.
Hitachi AIC Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AAFC Energy Technology Inc., Hitachi AIC Inc filed Critical AAFC Energy Technology Inc.
Priority to JP2008302473A priority Critical patent/JP5268591B2/en
Publication of JP2010129756A publication Critical patent/JP2010129756A/en
Application granted granted Critical
Publication of JP5268591B2 publication Critical patent/JP5268591B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Connection Of Batteries Or Terminals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a capacitor element of an electrolytic capacitor tends to have a defect such that since a lead-out lead foil is arranged and connected to a rivet external terminal provided on a sealing plate after being impregnated with an electrolyte consisting of an organic solvent and an electrolyte, the electrolyte easily sticks on a lead-out lead foil surface and then even when the lead-out lead foil is brought into mechanical contact with the rivet external terminal in this state, it becomes difficult to remove an electrolyte between them to easily cause a defect in connection. <P>SOLUTION: The electrolytic capacitor has the strip lead foil led out of the capacitor element impregnated with the electrolyte, the sealing plate for sealing a case containing the capacitor element, and the rivet external terminal connected to the lead foil by caulking and penetrating the sealing plate, wherein a connection part of the lead foil used for at least the rivet external terminal is subjected to linear unevenness processing. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、各種電子機器や産業機器に使用される電解コンデンサのコンデンサ素子から引き出される短冊状のリード箔に関するものである。   The present invention relates to a strip-shaped lead foil drawn from a capacitor element of an electrolytic capacitor used in various electronic devices and industrial devices.

従来、アルミニウム電解コンデンサは、アルミニウムの箔を陽極と陰極とし、セパレータを介して積層または捲回してコンデンサ素子として、エチレングリコールなどの有機溶剤と電解質とからなる電解液を含浸し、封口板を取り付けたケースに収納していた。このコンデンサ素子から電極を引き出すために陽極と陰極に、アルミニウムの箔からなる引き出しリード箔の片端を接続し、また、この引き出しリード箔のもう一方の片端は、封口板に設けた外部端子と接続していた。
そして、市場で広く流通している紙フェノール絶縁板とゴム板を張り合わせたタイプの封口板の場合、その外部端子は、リベット外部端子を使用していて、このリベット外部端子は、リベットとそれに取り付けた外部接続用の金属板端子を有し、引き出しリード箔を接続固定するため、引き出しリード箔の端部に穴をあけて、リベットの円柱部分に差し込み、次に平ワッシャを差し込み、機械的にかしめるリベット止めが一般的となっている。
Conventionally, an aluminum electrolytic capacitor has an aluminum foil as an anode and a cathode, laminated or wound through a separator, impregnated with an electrolytic solution composed of an organic solvent such as ethylene glycol and an electrolyte, and attached with a sealing plate It was stored in a case. To pull out the electrode from this capacitor element, one end of a lead lead foil made of aluminum foil is connected to the anode and the cathode, and the other end of the lead lead foil is connected to an external terminal provided on the sealing plate. Was.
In the case of a sealing plate of paper phenolic insulating plate and rubber plate that are widely distributed in the market, the external terminal uses a rivet external terminal, and this rivet external terminal is attached to the rivet. In order to connect and fix the lead lead foil for external connection, make a hole in the end of the lead lead foil, insert it into the cylindrical part of the rivet, and then insert a flat washer mechanically Caulking riveting is common.

ところで、このリベット止めの場合、引き出しリード箔とリベット外部端子を機械的に接触させて電気的な接続を得るため、往々にして接続不良を起こしやすい欠点がある。   By the way, in the case of this riveting, since the electrical connection is obtained by mechanically bringing the lead-out lead foil and the rivet external terminal into contact with each other, there is a drawback that connection failure is likely to occur.

そのための対策として従来、特許文献1のように、リベットまたは平ワッシャの少なくとも一方をサンドブラストなどして凹凸を設ける方法が提案されていた。
実開昭57−44537号公報
As a countermeasure for this, conventionally, a method of providing irregularities by sandblasting at least one of a rivet or a flat washer has been proposed as in Patent Document 1.
Japanese Utility Model Publication No. 57-44537

電解コンデンサのコンデンサ素子は、引き出しリード箔を設けながら積層または捲回し、その後エチレングリコールなどの有機溶剤と電解質からなる電解液に含浸してから、封口板に設けたリベット外部端子と引き出しリード箔とを接続するために、引き出しリード箔表面に電解液が付着しやすい。そのため、その状態でリベット外部端子と機械的に接触させてもその部分の引き出しリード箔表面に付着した電解液を取り除くことは難点になりやすい。リベットまたは平ワッシャの少なくとも一方をサンドブラストなどして凹凸を設けたとしても、引き出しリード箔表面に電解液がある場合、接続は、リベットまたは平ワッシャの凸部先端を電解液中に浸漬するような形となるため、また、接続中いつまでも電解液が引き出しリード箔表面に留まりやすく、そのため接続不良を起こしやすい欠点がある。本発明は、この接続不良の点を解決しようとするものである。
The capacitor element of the electrolytic capacitor is laminated or wound while providing a lead-out lead foil, and then impregnated with an electrolyte solution composed of an organic solvent such as ethylene glycol and an electrolyte, and then a rivet external terminal provided on the sealing plate and a lead-out lead foil Therefore, the electrolytic solution tends to adhere to the surface of the lead lead foil. For this reason, even if the rivet external terminal is brought into mechanical contact with the rivet in this state, it is difficult to remove the electrolyte attached to the surface of the lead-out lead foil. Even if at least one of the rivet or flat washer is provided with unevenness by sandblasting etc., if there is an electrolyte on the surface of the lead lead foil, the connection is made so that the tip of the convex part of the rivet or flat washer is immersed in the electrolyte. In addition, the electrolytic solution tends to stay on the surface of the lead foil for a long time during the connection, and therefore, there is a drawback that a connection failure is likely to occur. The present invention seeks to solve this connection failure.

上記課題を解決するために、本発明は、電解液を含浸したコンデンサ素子から引き出される短冊状の陽極用及び陰極用リード箔と、前記コンデンサ素子を収納するケースを封口する封口板と、前記リード箔とかしめにより接続する前記封口板を貫通するリベット外部端子とを有する電解コンデンサにおいて、前記リベット外部端子との接続部分に、縞状、交錯した縞状または放射状の凹凸の線状表面加工を設けた前記陽極用及び陰極用リード箔を使用することを特徴とする電解コンデンサを提供する。 In order to solve the above-mentioned problems, the present invention provides a strip-shaped anode and cathode lead foil drawn from a capacitor element impregnated with an electrolyte, a sealing plate for sealing a case housing the capacitor element, and the lead in the electrolytic capacitor and a rivet external terminals passing through the sealing plate connected by foil and crimping, to a connection portion between the front Symbol rivet external terminal, striped, linear surface processing of interlaced stripes or radial irregularities There is provided an electrolytic capacitor using the provided lead foil for anode and cathode .

コンデンサ素子に電解液を含浸したときに引き出しリード箔表面に付着した電解液は、引き出しリード箔に凹凸を設けると、凹部表面に偏在しやすい。そのためリベット外部端子と引き出しリード箔は、付着した電解液の少ない部分で接触しやすくなり、リベット外部端子と引き出しリード箔との間の電気的接続が容易になりやすい。
また、引き出しリード箔にメッシュ状またはストライプ状の凹凸を設けると、引き出しリード箔の凹部表面に偏在した電解液は、かしめ接続時に接続部分から容易に排出しやすく、接続部分に電解液が残りにくいため、リベット外部端子と引き出しリード箔との間の電気的接続が容易になりやすい。
The electrolytic solution adhering to the surface of the lead lead foil when the capacitor element is impregnated with the electrolytic solution tends to be unevenly distributed on the surface of the concave portion when the lead lead foil is provided with irregularities. For this reason, the rivet external terminal and the lead lead foil are likely to come into contact with each other at a portion where the attached electrolytic solution is small, and the electrical connection between the rivet external terminal and the lead lead foil tends to be easy.
Also, if the lead-out lead foil is provided with mesh-like or stripe-like concavities and convexities, the electrolyte that is unevenly distributed on the surface of the concave portion of the lead-out lead foil can be easily discharged from the connection part during caulking and the electrolyte does not easily remain in the connection part Therefore, the electrical connection between the rivet external terminal and the lead-out lead foil tends to be easy.

本発明に述べるコンデンサ素子とは、エッチング等によりピット形状に粗面化され、化成工程により表面に酸化膜からなる誘電体を形成した陽極用のアルミニウムの電極箔と、表面は一般的に自然酸化皮膜を設けた陰極用のアルミニウムの電極箔とを適当な幅に裁断した後、引き出しリードを接続し、紙などのセパレータと共に捲回または積層されたものをさす。   The capacitor element described in the present invention is an aluminum electrode foil for an anode that is roughened into a pit shape by etching or the like, and a dielectric formed of an oxide film is formed on the surface by a chemical conversion process. A cathode aluminum foil provided with a coating is cut to an appropriate width, and then a lead is connected, and it is wound or laminated together with a separator such as paper.

本発明に述べるリード箔は、50μmから500μm程度の厚さのアルミニウム箔を、短冊状に切り出したもので、一般にはエッチングなどの粗面化加工の施されていないプレンの箔が用いられている。陽極側の引き出しリードについては、陽極酸化が施されたものも使用される。これらの端子の下端部は、陽極箔あるいは陰極箔と電気的に接続する。陽極箔あるいは陰極箔との電気的な接続は、陽極箔および陰極箔の表面に陽極引き出しリードおよび陰極引き出しリード箔を重ねた状態での加締め、圧接あるいは溶接などによってなされている。   The lead foil described in the present invention is obtained by cutting an aluminum foil having a thickness of about 50 μm to 500 μm into a strip shape. In general, a plain foil not subjected to roughening such as etching is used. . As the lead-out lead on the anode side, an anodized lead is also used. The lower ends of these terminals are electrically connected to the anode foil or the cathode foil. The electrical connection with the anode foil or the cathode foil is made by caulking, pressure welding or welding in a state where the anode lead lead and the cathode lead lead foil are superposed on the surfaces of the anode foil and the cathode foil.

本発明に述べるリード箔に対するメッシュ状、ストライプ状または放射状の凹凸加工は、縞状または縞状が交錯したまたは放射状の凹凸形状で、短冊状に加工されたリード箔の前記リベット外部端子との接続部分範囲で少なくとも袋小路にならない程度の長さの線状加工である。放射状の凹凸形状は、引き出しリード箔の端部に設けた接続穴を中心として放射状に設けたものである。凹凸の程度は、リベット外部端子の大きさ、リード箔の厚さや硬度にもよるが、凹凸の平均高低差が20μmから400μm、好ましくは40μmから200μm程度である。凸と凸とのピッチ間隔は、平均高低差の1倍から4倍、好ましくは1.5倍から3倍程度である。
凹凸加工範囲は、少なくとも外部端子とリード箔との接続部分で、外部端子の断面範囲または差し込まれる平ワッシャと同程度の範囲で、一割程度大きな加工面積となると引き出しリード箔の凹部表面に偏在した電解液は、かしめ接続時に接続部分から容易に排出しやすくなる。
凹凸加工方法は、凹凸を設けた平板により上下からプレスする等により行うことができ、外部端子のリベット差し込み用の穴開け加工と同時に行うこともできる。片面だけの加工でもよい。
The mesh-like, stripe-like or radial irregularity processing for the lead foil described in the present invention is the connection of the striped or striped lead foil processed into a strip shape with the striped or strip-like shape and the rivet external terminal. This is a linear process with a length that does not result in at least a narrow path in the partial range. The radial concavo-convex shape is provided radially around the connection hole provided at the end of the lead wire. The degree of the unevenness depends on the size of the rivet external terminal and the thickness and hardness of the lead foil, but the average height difference of the unevenness is 20 μm to 400 μm, preferably 40 μm to 200 μm. The pitch interval between the protrusions is 1 to 4 times, preferably 1.5 to 3 times the average height difference.
The uneven processing range is at least the connection area between the external terminal and the lead foil, and the same as the cross-sectional area of the external terminal or the flat washer to be inserted. The electrolytic solution thus easily discharged from the connection portion during caulking connection.
The concavo-convex processing method can be performed by pressing from above and below with a flat plate provided with concavo-convex, and can also be performed simultaneously with the drilling process for inserting the rivet into the external terminal. Only one side may be processed.

本発明に述べる封口板は、紙フェノール絶縁板にゴムシートを貼り合わせたもので、コンデンサの開口部の形状に合わせて封口板用に加工されたものである。コンデンサ用としては一般的に流通しているものを使用する。紙フェノール絶縁板としては、紙基材に、架橋前のフェノール樹脂をアルコールなどに溶解したものを含浸させ、乾燥後、加熱架橋硬化させたものが使用されている。また、ゴムシートのゴム材としてはブチルゴム、エチレンプロピレンゴムなどが使用されている。
フェノール樹脂は、塩素イオン濃度が低い、好ましくは10ppm程度以下のフェノール樹脂と、塩素イオン濃度が低い、好ましくは10ppm程度以下の充填剤を有するもので、本発明に用いるフェノール樹脂は、ノボラックタイプでもレゾールタイプでもまたは変性物でもかまわないが、塩素イオン濃度が低いことが好ましい。
また、ゴム貼り紙フェノール絶縁板の裏面には、イオン物質遮断性の樹脂フィルム、たとえばポリエチレン、ポリプロピレン、エチレンとプロピレンの共重合体、またはポリフェニレンサルファイドフィルム、フッ素樹脂フィルムなどを重ね、接着一体化してもかまわない。
The sealing plate described in the present invention is obtained by bonding a rubber sheet to a paper phenol insulating plate and processed for a sealing plate in accordance with the shape of the opening of the capacitor. For capacitors, a generally available one is used. As a paper phenol insulating board, a paper base material is used which is impregnated with a phenolic resin before cross-linking dissolved in alcohol or the like, dried and then heat-cured and cured. Further, butyl rubber, ethylene propylene rubber, or the like is used as the rubber material of the rubber sheet.
The phenol resin has a low chlorine ion concentration, preferably about 10 ppm or less, and a filler having a low chlorine ion concentration, preferably about 10 ppm or less. The phenol resin used in the present invention is a novolac type. A resol type or a modified product may be used, but a low chloride ion concentration is preferred.
In addition, an ionic substance blocking resin film such as polyethylene, polypropylene, a copolymer of ethylene and propylene, a polyphenylene sulfide film, a fluororesin film, or the like may be laminated on the back surface of the rubber-coated paper phenol insulating plate, and bonded and integrated. It doesn't matter.

本発明に述べる外部端子は、絶縁板とゴム板を張り合わせたタイプの封口板を貫通する外部端子で、たとえば、ゴム板側からリベットとそれに取り付けた金属板端子を設け、リベットの先を封口板に設けた貫通穴に通し、絶縁板側から固定用のワッシャなどをリベットの先に差し込んで、封口板に外部端子を固定するものである。固定用のワッシャの代わりに、リベットを同様な形に変形させる場合もある。また、リベットが逆向きに封口板に挿入され、ゴム板側に金属板端子差し込んだ後で、リベットの先端をかしめる場合もある。この場合には、リベットの頭部分には柱状突起を設け、コンデンサ素子から引き出された引き出しリード箔を接続する。
なお、封口板を貫通する外部端子が、インサート成形により一体的成形されるネジ付き端子でも、リード箔を端子にかしめ等により接続する場合には同様に使用することができる。
The external terminal described in the present invention is an external terminal that penetrates a sealing plate of a type in which an insulating plate and a rubber plate are bonded together. For example, a rivet and a metal plate terminal attached thereto are provided from the rubber plate side, and the tip of the rivet is a sealing plate. A fixing washer or the like is inserted into the tip of the rivet from the insulating plate side to fix the external terminal to the sealing plate. Instead of a washer for fixing, the rivet may be transformed into a similar shape. In some cases, the rivet is inserted into the sealing plate in the opposite direction, and the tip of the rivet is crimped after the metal plate terminal is inserted into the rubber plate side. In this case, a columnar protrusion is provided on the head portion of the rivet, and a lead lead foil drawn from the capacitor element is connected.
In addition, even if the external terminal which penetrates a sealing board is a screw terminal integrally formed by insert molding, when connecting lead foil to a terminal by caulking etc., it can use similarly.

以下、本発明を図面に示す実施の形態に基づいて説明する。
図1は、本発明に係るアルミニウム電解コンデンサの断面図を示している。
本発明に係るアルミニウム電解コンデンサは、通常のアルミニウム電解コンデンサと同様に、電極箔を適当な幅に裁断された後、電極箔に引き出しリード箔1を接続し、紙などのセパレータと共に捲回または積層されたコンデンサ素子2が、電解液と共に上面が開口したアルミニウム等の金属材からなり外観的に円筒状や楕円筒状に形成されているケース4内に収容し、封口板3により封口されていて、電極箔から引き出されたリード箔が、封口板3を貫通した外部端子8に接続されている構造になっている。ケース4には絶縁性チューブを被覆する場合もある。
封口板3は、紙フェノール絶縁板5の表面に、ゴム板6がその裏側にはイオン物質遮断性の樹脂フィルム7が貼り合わされている。
外部端子8は、外部端子貫通用の穴で封口板3を貫通する形で取り付けられる正負極用一対のリベット9と、リベット9に接続し別端部が外部と接続する板状端子10と、封口板3に固定するためのリベット9の先端から差し込まれた固定用平ワッシャ11を有し、コンデンサ素子2から引き出された引き出しリード箔1をその端部に穴を開け、またその周辺表面にメッシュ状またはストライプ状の凹凸部13を設けて、リベット9に差し込み、更にかしめ用平ワッシャ12をリベット9に差し込みかしめて接続している。
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
FIG. 1 shows a cross-sectional view of an aluminum electrolytic capacitor according to the present invention.
The aluminum electrolytic capacitor according to the present invention, like a normal aluminum electrolytic capacitor, is cut or laminated with a separator such as paper after the lead foil 1 is connected to the electrode foil after the electrode foil is cut to an appropriate width. The capacitor element 2 is housed in a case 4 made of a metal material such as aluminum having an upper surface opened together with the electrolyte and formed in a cylindrical shape or an elliptical cylindrical shape, and is sealed by a sealing plate 3. The lead foil drawn out from the electrode foil is connected to the external terminal 8 penetrating the sealing plate 3. The case 4 may be covered with an insulating tube.
In the sealing plate 3, a rubber plate 6 is bonded to the surface of the paper phenol insulating plate 5 and an ionic substance blocking resin film 7 is bonded to the back side thereof.
The external terminal 8 includes a pair of positive and negative rivets 9 that are attached so as to pass through the sealing plate 3 through holes for penetrating the external terminals, a plate-like terminal 10 that is connected to the rivet 9 and has another end connected to the outside, A flat washer 11 for fixing inserted from the tip of a rivet 9 for fixing to the sealing plate 3 is provided, a hole in the lead lead foil 1 drawn out from the capacitor element 2 is made at the end, and the peripheral surface thereof is formed. A mesh-shaped or striped uneven portion 13 is provided and inserted into the rivet 9, and further, a caulking flat washer 12 is inserted into the rivet 9 and connected.

図2は、かしめ用平ワッシャと引き出しリード箔のかしめ具合の模式断面図を示している。図2(a)は、かしめ前を、図2(b)は、かしめ前半を、(c)は、かしめ後半途中を示している。   FIG. 2 shows a schematic cross-sectional view of the caulking condition of the flat washer for caulking and the lead-out lead foil. 2A shows the state before caulking, FIG. 2B shows the first half of caulking, and FIG. 2C shows the latter half of the caulking.

図2(a)のかしめ前において、コンデンサ素子に電解液を含浸したとき等により引き出しリード箔1表面に付着した場合、電解液14は、引き出しリード箔1に設けた凹凸のと凹部15表面に偏在しやすい。
そのため、図2(b)のかしめ前半において、かしめ用平ワッシャ12と引き出しリード箔1は、付着した電解液14の少ない部分で接触しやすくなり、かしめ用平ワッシャ12と引き出しリード箔1との間の電気的接続が容易になりやすい。
また、図2(c)のかしめ後半途中において、引き出しリード箔1に設けた凹凸はメッシュ状またはストライプ状または放射状なので、電解液14は、かしめ間隔が狭まるに連れて接続部分から容易に排出しやすく、接続部分に電解液が残りにくいため、かしめ用平ワッシャ12と引き出しリード箔1との間の電気的接続が容易になりやすい。かしめ用平ワッシャ12とリベット外部端子とのかしめ部分には特に電解液の汚染はないので、以上のように、リベット外部端子と引き出しリード箔1との間の電気的接続が容易になりやすい。
If the capacitor element adheres to the surface of the lead lead foil 1 when the capacitor element is impregnated with an electrolytic solution before caulking in FIG. 2A, the electrolytic solution 14 is applied to the surface of the concave and convex portions 15 provided on the lead lead foil 1. It tends to be unevenly distributed.
Therefore, in the first half of caulking in FIG. 2 (b), the caulking flat washer 12 and the lead lead foil 1 are easily in contact with a portion where the attached electrolyte solution 14 is small, and the caulking flat washer 12 and the lead lead foil 1 are The electrical connection between them tends to be easy.
Further, in the middle of the latter half of the caulking in FIG. 2C, the unevenness provided on the lead-out lead foil 1 is a mesh, stripe, or radial, so that the electrolyte solution 14 is easily discharged from the connection portion as the caulking interval becomes narrower. It is easy and the electrolyte does not easily remain in the connection portion, so that the electrical connection between the caulking flat washer 12 and the lead lead foil 1 tends to be easy. Since the caulking portion between the caulking flat washer 12 and the rivet external terminal is not particularly contaminated with the electrolytic solution, as described above, the electrical connection between the rivet external terminal and the lead-out lead foil 1 tends to be easy.

以下、本発明を実施例に基づいて説明する。なお、実施例は、定格400V、560μFの電解コンデンサを製造する場合について説明する。
先ず、封口板を準備しておく。厚さ2mmの紙フェノール絶縁板の表面に、厚さ1mmのブチルゴム板を、その裏側には厚さ100μmのイオン物質遮断性の樹脂フィルムとしてポリプロピレンを貼り合わせて、打ち抜き加工により封口板の外形加工と、封口板を貫通する外部端子用の貫通孔を設けた。次に、ゴム板側にリベットとそれに取り付けた金属板端子を設け、絶縁板側から固定用のワッシャをリベットの先から差し込んで、封口板に外部端子を固定した。
次に、陽極箔は厚さ約100μmのアルミニウム箔を処理して製造する。すなわち、このアルミニウム箔を直流および化学エッチング法によって粗面化する。粗面化後、純水中でボイルする。ボイル後、ホウ酸の化成液中において、600Vの直流電圧をかけて化成し、化成膜を形成する。化成処理後、安定化するために、リン酸処理をし、ついで温度550℃で焼成処理をする。焼成処理後、幅40mm、長さ3000mmの大きさに切断して、陽極箔とする。
また、陽極用リード箔には未エッチングで600Vの化成処理を施した厚さ150μm、幅5mm、長さ60mmのアルミニウム箔を用いる。そしてこの陽極用リード箔を陽極箔にコールドウェルドにより接続する。
陰極箔は、厚さ30μmのアルミニウム箔をエッチング、リン酸処理後、約200μF/cmとしたものを用い、幅40mm、長さ3050mmの大きさに切断する。
陰極用リード箔は、アルミニウム箔を長さ150μm、幅1000mmに圧延し、次いで焼なまし、500mmの幅に切断した後、さらに幅5mmの大きさに切断して製造する。そしてこの陰極用リード箔を陰極箔にコールドウェルドにより接続する。
電解紙としては、幅50mmのものを使用し、厚さ60μm、密度0.75g/cmのクラフト紙を用いた。
この電解紙を介して陽極箔と陰極箔とを積層して捲回し、コンデンサ素子を形成した。その後、エチレングリコールと2−ブチルオクタン二酸アンモニウムの有機酸系電解液を含浸した。
電解液を含浸後、コンデンサ素子から引き出した陽極用リード箔及び陰極用リード箔の端部に、リベット差し込み用の穴をあけ、その穴周辺に表1に示す条件の凹凸を設けた平板プレスすることにより凹凸加工した。そして、各々封口板に貫通して設けた陽極端子及び陰極端子に接続した。接続後、ケースにコンデンサ素子を収納した。収納後、封口板をケースの端に取り付けて、ケースを密閉した。ケースを密閉後、温度85℃の雰囲気中に放置して425Vの電圧を加えてエージング処理した。エージング処理後、ケースに絶縁性のチューブを被覆した。
Hereinafter, the present invention will be described based on examples. In addition, an Example demonstrates the case where an electrolytic capacitor of rated 400V and 560 micro F is manufactured.
First, a sealing plate is prepared. A 1 mm thick butyl rubber plate is bonded to the surface of a 2 mm thick paper phenolic insulating plate, and a polypropylene is bonded to the back side as a 100 μm thick ionic substance-blocking resin film. And a through hole for an external terminal penetrating the sealing plate. Next, a rivet and a metal plate terminal attached thereto were provided on the rubber plate side, and a fixing washer was inserted from the end of the rivet from the insulating plate side to fix the external terminal to the sealing plate.
Next, the anode foil is manufactured by processing an aluminum foil having a thickness of about 100 μm. That is, the aluminum foil is roughened by direct current and chemical etching. After roughening, boil in pure water. After boiling, a chemical film is formed by applying a direct current voltage of 600 V in a boric acid chemical liquid. After the chemical conversion treatment, phosphoric acid treatment is performed for stabilization, followed by baking at a temperature of 550 ° C. After the firing treatment, it is cut into a size of 40 mm in width and 3000 mm in length to obtain an anode foil.
The lead foil for the anode is an aluminum foil having a thickness of 150 μm, a width of 5 mm, and a length of 60 mm that has been subjected to a chemical conversion treatment of 600 V without etching. The anode lead foil is connected to the anode foil by cold welding.
As the cathode foil, an aluminum foil having a thickness of 30 μm is etched and phosphoric acid-treated, and about 200 μF / cm 2 is used. The cathode foil is cut into a size of 40 mm in width and 3050 mm in length.
The cathode lead foil is manufactured by rolling an aluminum foil to a length of 150 μm and a width of 1000 mm, then annealing, cutting to a width of 500 mm, and further cutting to a size of 5 mm. The cathode lead foil is connected to the cathode foil by cold welding.
As the electrolytic paper, paper having a width of 50 mm was used, and kraft paper having a thickness of 60 μm and a density of 0.75 g / cm 3 was used.
An anode foil and a cathode foil were laminated through this electrolytic paper and wound to form a capacitor element. Thereafter, an organic acid electrolyte solution of ethylene glycol and ammonium 2-butyloctanedioate was impregnated.
After impregnating the electrolytic solution, a hole for inserting a rivet is made in the end portion of the anode lead foil and the cathode lead foil drawn out from the capacitor element, and flat pressing is performed in the vicinity of the hole with the conditions shown in Table 1. The unevenness was processed. And it connected to the anode terminal and cathode terminal which were each penetrated and provided in the sealing board. After the connection, the capacitor element was stored in the case. After storage, a sealing plate was attached to the end of the case, and the case was sealed. After the case was sealed, it was left in an atmosphere at a temperature of 85 ° C. and a voltage of 425 V was applied for aging treatment. After the aging treatment, the case was covered with an insulating tube.

凹凸加工を表1に示すように変える以外実施例1と同様に実施例2−8まで製造した。隣り合う放射状の凹凸加工の加工角度は10度で行った。また、凹凸加工しない従来例1併せて、130℃の高温下にて2000時間定格電圧印加後の端子部抵抗変化を示す。
その結果より、凹凸加工を施した実施例1〜8は従来例より初期端子部抵抗値および電圧印加後の抵抗値が低く高信頼性であることがわかる。
Example 2-8 was manufactured in the same manner as in Example 1 except that the uneven processing was changed as shown in Table 1. The processing angle of the adjacent radial unevenness was 10 degrees. Further, together with the conventional example 1 that does not process the unevenness, the change in resistance of the terminal portion after applying the rated voltage for 2000 hours at a high temperature of 130 ° C. is shown.
From the results, it can be seen that Examples 1 to 8 subjected to uneven processing have a lower initial terminal resistance value and a resistance value after voltage application and higher reliability than the conventional example.

Figure 0005268591
Figure 0005268591

本発明に係るアルミニウム電解コンデンサの断面図を示している。1 shows a cross-sectional view of an aluminum electrolytic capacitor according to the present invention. 本発明に係るかしめ用平ワッシャと引き出しリード箔のかしめ具合の模式断面図を示している。The schematic cross section of the caulking condition of the flat washer for caulking and the drawer lead foil according to the present invention is shown.

符号の説明Explanation of symbols

1…引き出しリード箔、2…コンデンサ素子、3…封口板、4…ケース、5…紙フェノール絶縁板、6…ゴム板、7…イオン物質遮断性の樹脂フィルム、8…外部端子、9…リベット、10…板状端子、11…固定用平ワッシャ、12…かしめ用平ワッシャ、13…メッシュ状またはストライプ状の凹凸部、14…電解液、15…凹部。   DESCRIPTION OF SYMBOLS 1 ... Lead-out foil, 2 ... Capacitor element, 3 ... Sealing board, 4 ... Case, 5 ... Paper phenol insulation board, 6 ... Rubber plate, 7 ... Resin film of an ionic substance blocking property, 8 ... External terminal, 9 ... Rivet DESCRIPTION OF SYMBOLS 10 ... Plate-shaped terminal, 11 ... Flat washer for fixation, 12 ... Flat washer for caulking, 13 ... Uneven part of mesh shape or stripe form, 14 ... Electrolyte, 15 ... Recessed part.

Claims (1)

電解液を含浸したコンデンサ素子から引き出される短冊状の陽極用及び陰極用リード箔と、前記コンデンサ素子を収納するケースを封口する封口板と、前記リード箔とかしめにより接続する前記封口板を貫通するリベット外部端子とを有する電解コンデンサにおいて、前記リベット外部端子との接続部分に、縞状、交錯した縞状または放射状の凹凸の線状表面加工を設けた前記陽極用及び陰極用リード箔を使用することを特徴とする電解コンデンサ。 The strip-shaped anode and cathode lead foils drawn from the capacitor element impregnated with the electrolytic solution, the sealing plate for sealing the case for storing the capacitor element, and the sealing plate connected to the lead foil by caulking are penetrated. in the electrolytic capacitor and a rivet external terminal, the connecting portion between the front Symbol rivet external terminals, using the striped, interlaced stripes or radial of said anode and cathode lead foil provided with a linear surface treatment of irregularities An electrolytic capacitor characterized by that.
JP2008302473A 2008-11-27 2008-11-27 Electrolytic capacitor Active JP5268591B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008302473A JP5268591B2 (en) 2008-11-27 2008-11-27 Electrolytic capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008302473A JP5268591B2 (en) 2008-11-27 2008-11-27 Electrolytic capacitor

Publications (2)

Publication Number Publication Date
JP2010129756A JP2010129756A (en) 2010-06-10
JP5268591B2 true JP5268591B2 (en) 2013-08-21

Family

ID=42329952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008302473A Active JP5268591B2 (en) 2008-11-27 2008-11-27 Electrolytic capacitor

Country Status (1)

Country Link
JP (1) JP5268591B2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6012283Y2 (en) * 1980-08-25 1985-04-20 ニチコン株式会社 Electrolytic capacitor
JPH06232013A (en) * 1993-01-29 1994-08-19 Nec Kansai Ltd Solid electrolytic capacitor
JP3096637B2 (en) * 1996-07-17 2000-10-10 本田技研工業株式会社 Capacitor
JP3514685B2 (en) * 2000-01-21 2004-03-31 ニチコン株式会社 Aluminum electrolytic capacitors
JP2005286247A (en) * 2004-03-30 2005-10-13 Nippon Chemicon Corp Manufacturing method of laminated capacitor

Also Published As

Publication number Publication date
JP2010129756A (en) 2010-06-10

Similar Documents

Publication Publication Date Title
US8154854B2 (en) Solid electrolytic capacitor and method of manufacturing the same
CN101504884A (en) Electrolytic capacitor and method of manufacturing the same
JP5072857B2 (en) Electrolytic capacitor manufacturing method
US11373812B2 (en) Electrolytic capacitor module
TWI396214B (en) Electrolysis capacitor
JP5073947B2 (en) Winding capacitor and method of manufacturing the same
JP2008277348A (en) Electrolytic capacitor and electrolytic capacitor manufacturing method
JP5268591B2 (en) Electrolytic capacitor
JP7292003B2 (en) Electrolytic capacitor and its manufacturing method
JP2008141079A (en) Electrolytic capacitor
JP4999610B2 (en) Electrolytic capacitor and manufacturing method thereof
JP7495848B2 (en) Electrolytic capacitor
KR20240018410A (en) Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor
JP2011204725A (en) Aluminum electrolytic capacitor
JP2010074089A (en) Electrolytic capacitor, and method of manufacturing the same
JPWO2009013943A1 (en) Electrolytic capacitor
JP2009231551A (en) Electrolytic capacitor and method of manufacturing the same
JPH07272979A (en) Electrolytic capacitor
JP4697402B2 (en) Electrolytic capacitor
JP2011003699A (en) Solid electrolytic capacitor and method of manufacturing the same
CN118435302A (en) Electrolytic capacitor and method for manufacturing the same
JP2009141102A (en) Capacitor
JP2019140261A (en) Electric double layer capacitor
JP2008192716A (en) Laminated solid electrolytic capacitor
WO2023163134A1 (en) Capacitor and method for producing same

Legal Events

Date Code Title Description
RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20100618

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20111118

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20121105

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20121113

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130111

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130212

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130412

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130507

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20130507

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 5268591

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250