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WO2010116668A1 - Condensateur électrolytique et procédé de fabrication - Google Patents

Condensateur électrolytique et procédé de fabrication Download PDF

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Publication number
WO2010116668A1
WO2010116668A1 PCT/JP2010/002262 JP2010002262W WO2010116668A1 WO 2010116668 A1 WO2010116668 A1 WO 2010116668A1 JP 2010002262 W JP2010002262 W JP 2010002262W WO 2010116668 A1 WO2010116668 A1 WO 2010116668A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode foil
lead terminal
burr
hole
electrolytic capacitor
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.)
Ceased
Application number
PCT/JP2010/002262
Other languages
English (en)
Japanese (ja)
Inventor
千葉陽一
山本修爾
田口純之介
石野徹
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.)
Nippon Chemi Con Corp
Original Assignee
Nippon Chemi Con Corp
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 Nippon Chemi Con Corp filed Critical Nippon Chemi Con Corp
Priority to KR1020117011392A priority Critical patent/KR101683249B1/ko
Priority to CN201080003282.0A priority patent/CN102217014B/zh
Publication of WO2010116668A1 publication Critical patent/WO2010116668A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/008—Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/145—Liquid electrolytic capacitors

Definitions

  • the present invention relates to an electrolytic capacitor and a manufacturing method thereof, and more particularly to a connection structure and a connection method of an electrode foil and a lead terminal of the electrolytic capacitor.
  • the electrode foil and the lead terminal of the electrolytic capacitor are overlapped, the stitch needle is penetrated from the lead terminal side, and the burr of the electrode foil and the lead terminal is formed on the back side of the electrode foil. Further, the burr was pressed to connect the electrode foil and the lead terminal.
  • the lead terminal is overlaid on the electrode foil in which holes are provided in advance, the stitch needle is penetrated from the lead terminal side, and a burr of the lead terminal is formed on the back side of the electrode foil.
  • Patent Document 1 for connecting a lead terminal to a lead terminal, and through holes in which four corners are respectively directed in the longitudinal direction and the width direction of the electrode foil are provided in the electrode foil, and the lead terminal is provided on each hole.
  • Patent Document 2 Japanese Patent Document 2
  • the electrolytic capacitor of the present invention has a lead terminal overlaid on an electrode foil in which a through hole is formed, penetrates a stitch needle from the lead terminal side, and burrs and lead terminals on the back side of the electrode foil.
  • the burr of the electrode foil is formed, and the burr is pressed to connect the electrode foil and the lead terminal, the burr of the electrode foil and the burr of the lead terminal are formed on the back side of the electrode foil and pressed.
  • a connecting portion formed by pressing the burr of the lead terminal formed on the back side of the electrode foil.
  • the electrode foil and the lead terminal are connected by the connecting portion where the burr of the lead terminal formed on the back side of the electrode foil bites into the electrode foil by pressing, but a part of the through hole of the electrode foil is further stitched by the needle.
  • a burr is formed together with the lead terminal, and the burr of the electrode foil and the burr of the lead terminal are integrally formed by pressing to form a connection portion, so that the connection strength between the electrode foil and the lead terminal can be further increased.
  • the stress on the electrode foil by the stitch needle is only a part of the through hole of the electrode foil, and the occurrence of cracks and the like in the electrode foil can be suppressed.
  • the electrolytic capacitor manufacturing method of the present invention is such that a lead terminal is stacked on an electrode foil having a through hole, a stitch needle is passed through from the lead terminal side, and a lead terminal burr and an electrode foil burr are formed on the back side of the electrode foil.
  • a stitch needle having a square cross section is penetrated from the lead terminal side to form a through hole in the electrode foil.
  • a portion is formed as a burr on the back side of the electrode foil together with the lead terminal by a corner portion of the stitch needle, and a lead terminal is formed as a burr on the back side of the electrode foil by a side portion of the stitch needle. It is characterized in that the burr formed on the back side is pressed to connect the electrode foil and the lead terminal.
  • the burr of the lead terminal formed on the back side of the electrode foil by the side of the stitch needle bites into the electrode foil by pressing, and the electrode foil and the lead terminal are connected.
  • Some burrs are formed together with the lead terminals by the corners of the stitch needles, and the burrs of the electrode foil and the burrs of the lead terminals are connected together by pressing, so the connection strength between the electrode foil and the lead terminals is increased. It can be further increased.
  • the stress on the electrode foil by the stitch needle is only a part of the through hole of the electrode foil, and the occurrence of cracks and the like in the electrode foil can be suppressed.
  • the electrode foil burrs are formed at a plurality of locations of the through holes of the electrode foil. According to this, the burr of the electrode foil and the burr of the lead terminal are pressed to increase the integral part, and the mechanical strength between the electrode foil and the lead terminal is increased.
  • the through hole of the electrode foil is a square hole
  • the stitch needle is lead at a position rotated by 30 to 60 degrees with respect to the corner of the stitch needle having a square cross section and the corner of the through hole of the electrode foil. It is characterized by penetrating the terminal. According to this, the corner
  • the burr of the electrode foil formed in the square hole of the electrode foil is formed on all sides of the square hole. According to this, the burr of the electrode foil and the burr of the lead terminal are pressed to increase the integral part, and the mechanical strength between the electrode foil and the lead terminal is increased.
  • corner portion of the stitch needle having a square cross section when the stitch needle penetrates into the through hole of the electrode foil is in pressure contact with a part of the inner periphery of the through hole of the electrode foil.
  • the corner of the stitch needle is in pressure contact with a part of the inner periphery of the through hole of the electrode foil, and the electrode foil burr and the lead terminal burr can be easily formed by biting into the electrode foil.
  • the electrolytic capacitor and the manufacturing method thereof of the present invention improve the electrical and mechanical connection in the stitch connection between the electrode foil and the lead terminal, and the stitch connection is possible even with the electrode foil having a high etching magnification. .
  • the electrolytic capacitor according to the present invention includes an anode foil made of aluminum whose surface has been subjected to etching treatment and chemical conversion treatment, and a cathode foil made of aluminum whose surface has been subjected to etching treatment and chemical conversion treatment as necessary, respectively.
  • anode foil made of aluminum whose surface has been subjected to etching treatment and chemical conversion treatment
  • a cathode foil made of aluminum whose surface has been subjected to etching treatment and chemical conversion treatment as necessary, respectively.
  • the outer case made of aluminum is housed together with the driving electrolyte, and the opening of the outer case is sealed with a sealing rubber.
  • a square hole 3 is formed in advance as a through hole at a portion of the electrode foil 1 to be stitched with the lead terminal 2.
  • Fig.1 (a) it mounts on the die
  • a square hole 3 as shown in FIG. 2 is formed.
  • the punching means 6 penetrates the electrode foil 1 and then passes through the punched hole 5 of the die 4, and the removed piece 7 of the electrode foil 1 is discharged through the punched hole 5. .
  • the punching means 6 moves to the original position even when pulled upward, and waits until the next planned stitch portion of the electrode foil 1 arrives.
  • the punching means 6 has a square cross section, and in the embodiment, has a substantially square cross sectional shape, whereby a substantially square square hole 3 is formed in the electrode foil 1.
  • Two punching means 6 are provided and two square holes 3 are simultaneously formed in the width direction of the electrode foil 1.
  • the present invention is not limited to this, and stitches between the electrode foil 1 and the lead terminal 2 that are arbitrarily provided.
  • the number of punching means 6 can be set as appropriate according to the number of planned sites.
  • the periphery of the square hole 3 is subjected to surface treatment by polishing or the like as necessary, and as shown in FIG. 1 is placed on another die 4 '.
  • the lead terminal 2 is placed on the square hole 3 of the electrode foil 1 and the periphery of the planned stitching portion is pressed by the fixing means 8.
  • the fixing means 8 is formed with a guide hole 14 that can move the stitch needle 9 up and down and guide it accurately onto the square hole 3.
  • the stitch needle 9 has a substantially square cross-sectional angle, and forms a pyramid shape toward the tip. As shown in FIG.
  • the stitch needle 9 is passed through the guide hole 14 of the fixing means 8 from the lead terminal 2 side, and the burr 10 of the lead terminal 2 and the burr 10 of the electrode foil 1 are formed on the back side of the electrode foil 1.
  • the die 4 ′ is formed not only with the electrode foil 1 mounted and fixed, but also with a hole 5 ′ through which the stitch needle 9 is inserted.
  • the hole 5 ′ is formed by the burr 10 of the lead terminal 2 and the electrode.
  • the burr 10 ′ of the foil 1 has dimensions for stably forming a predetermined shape below the electrode foil 1. Note that there are two stitch needles 9 as in the number of the square holes 3, and the lead terminals 2 are penetrated simultaneously.
  • the positional relationship between the cross-sectional shape of the stitch needle 9 and the square hole 3 formed in the electrode foil 1 will be described.
  • two square holes 3 are formed in the electrode foil 1 in the width direction so that one side thereof coincides with the longitudinal direction and the width direction of the electrode foil 1.
  • One side of the square hole 3 is 0.4 mm in the embodiment, but 0.3 to 1.5 mm is preferable.
  • the stitch needle 9 has a square cross section and a pyramid shape toward the tip. The diagonal line penetrates the square hole 3 of the electrode foil 1 and the dimension of one side of the square hole 3 of the electrode foil 1 is larger. Larger is preferred. Thereby, the stitch needle 9 can be bited into each side of the square hole 3 of the electrode foil 1 together with the lead terminal 2.
  • the stitch needle 9 pierces the lead terminal 2 placed on the square hole 3 of the electrode foil 1, penetrates the square hole 3 and protrudes to the back side of the electrode foil 1.
  • the needle 9 is 45 degrees with respect to the corner hole 3 with respect to the corner portion of the stitch needle 9 having a square cross section and the corner hole 3 of the electrode foil 1, and a preferable range is 30 to 60 degrees.
  • the square hole 3 is penetrated at the rotated position. Therefore, in the vicinity of the center of each side of the square hole 3 of the electrode foil 1, the corner of the stitch needle 9 partially bites together with the lead terminal 2.
  • FIG. 3B is a cross-sectional view taken along the line AA in FIG. 4.
  • the burr 10 ′ of the electrode foil 1 and the burr 10 of the lead terminal 2 are shown.
  • the stitch needle 9 penetrating the electrode foil 1 moves to the original position even when pulled up and waits until the next electrode foil 1 arrives.
  • the electrode foil 1 is pressed with the burrs 10 of the lead terminals 2 and the burrs 10 'of the electrode foil 1 formed on the back side.
  • a flat plate-shaped press die 11 is lowered to the lead terminal side of the electrode foil 1 to hold the electrode foil 1.
  • the flat plate-like lower mold 12 installed on the back side of the electrode foil 1 moves toward the electrode foil 1 and the burrs 10 of the lead terminals 2 and the burrs 10 ′ of the electrode foil 1 projecting to the back side of the electrode foil 1.
  • the burrs 10 of the lead terminals 2 are folded back in four directions from the respective sides of the stitch needle 9 that are square in cross section, thereby forming the leaf portion 13.
  • the electrode foil 1 is sandwiched and pressed between the lead terminal 2 and the leaf portion 13 to obtain electrical connection. Also, the burr 10 'of the electrode foil 1 and the burr 10 of the lead terminal 2 formed near the center of each side of the square hole 3 of the electrode foil 1 are pressed together to obtain mechanical strength. About the part (leaf part 13) which protruded only the burr
  • the press thickness of the burr 10 etc. of the lead terminal 2 by the lower press mold 12 is preferably in the range of 0.9 to 1.2 times the thickness dimension of the electrode foil 1 and the lead terminal 2 before pressing. is there.
  • the thickness of the electrode foil 1 and the lead terminal 2 before being crushed exceeds 0.9 times, the electrode foil 1 is liable to be cracked, and the thickness of the electrode foil 1 and the lead terminal 2 before being crushed. If the press thickness does not reach up to 1.2 times, the electrical and mechanical connectivity between the electrode foil 1 and the lead terminal 2 is difficult to obtain.
  • the burr 10 ′ of the electrode foil 1 is formed by the stitch needle 9 on all sides of the square hole 3 of the electrode foil 1. It can also be formed on at least one side.
  • the through hole 3 ′ provided in the electrode foil 1 is a square square hole, but may be another polygonal shape, or may be a circular through hole 3 ′ as shown in FIG. 7.
  • the stitch needle 9 has a square cross section, but may be another polygonal shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne le raccordement fiable d'une feuille d'électrode à une borne de connexion, sans déchirer la feuille, ou autre, même lorsque le rapport de gravure de la feuille d'électrode est élevé, et l'amélioration de la connexion électrique et mécanique de ce raccordement. On décrit un condensateur électrolytique dans lequel une borne de connexion est déposée sur une feuille d'électrode, que traverse un trou; une aiguille de raccordement est poussée à travers la feuille depuis le côté avec la borne, ce qui forme une crête relative à la borne de connexion et une crête relative à la feuille d'électrode sur l'envers de la feuille d'électrode; ensuite, ces crêtes sont comprimées, ce qui a pour effet de raccorder la feuille d'électrode et la borne de connexion. Sur au moins un côté du trou susmentionné de la feuille d'électrode, une crête relative à la feuille d'électrode et une crête relative à la borne de connexion sont formées au niveau de l'envers de la feuille d'électrode; ensuite, ces crêtes sont comprimées, ce qui a pour effet de raccorder la feuille d'électrode et la borne de connexion.
PCT/JP2010/002262 2009-03-31 2010-03-29 Condensateur électrolytique et procédé de fabrication Ceased WO2010116668A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020117011392A KR101683249B1 (ko) 2009-03-31 2010-03-29 전해컨덴서의 제조방법
CN201080003282.0A CN102217014B (zh) 2009-03-31 2010-03-29 电解电容及其制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-087682 2009-03-31
JP2009087682A JP5321817B2 (ja) 2009-03-31 2009-03-31 電解コンデンサ及びその製造方法

Publications (1)

Publication Number Publication Date
WO2010116668A1 true WO2010116668A1 (fr) 2010-10-14

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ID=42935967

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/002262 Ceased WO2010116668A1 (fr) 2009-03-31 2010-03-29 Condensateur électrolytique et procédé de fabrication

Country Status (4)

Country Link
JP (1) JP5321817B2 (fr)
KR (1) KR101683249B1 (fr)
CN (1) CN102217014B (fr)
WO (1) WO2010116668A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102479616A (zh) * 2010-11-23 2012-05-30 尼吉康株式会社 引脚框及其制造装置、固体电解电容器及其制造方法
KR20190108113A (ko) * 2017-01-25 2019-09-23 닛뽄 케미콘 가부시끼가이샤 콘덴서 및 그 제조 방법
WO2024202916A1 (fr) * 2023-03-28 2024-10-03 日本ケミコン株式会社 Condensateur et son procédé de fabrication

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112640018B (zh) * 2018-09-06 2022-10-04 湖北工业株式会社 引线端子以及其制造方法
JP7731072B2 (ja) * 2021-10-29 2025-08-29 パナソニックＩｐマネジメント株式会社 電解コンデンサおよびその製造方法
JPWO2024034640A1 (fr) * 2022-08-10 2024-02-15

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003282364A (ja) * 2002-03-25 2003-10-03 Jcc Engineering Co Ltd 端子付き電極箔並びにその製造方法及び装置
JP2008091562A (ja) * 2006-09-29 2008-04-17 Nippon Chemicon Corp 電解コンデンサ

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JPS54152953A (en) 1978-05-24 1979-12-01 Toshiba Corp Digital-to-analog converter circuit
JPS56108230A (en) * 1980-01-31 1981-08-27 Nichicon Capacitor Ltd Device for connecting lead terminal for condenser
JPS56129318A (en) * 1980-03-14 1981-10-09 Nichicon Capacitor Ltd Lead terminal connecting device
JP4878967B2 (ja) * 2006-09-07 2012-02-15 三洋電機株式会社 電解コンデンサ
CN101329944A (zh) * 2007-06-21 2008-12-24 湖南艾华科技集团有限公司 一种铝电解电容器老化前的预处理方法与装置
JP2009130338A (ja) * 2007-11-28 2009-06-11 Elna Co Ltd アルミニウム電極箔に対するタブ端子の接続方法およびアルミニウム電解コンデンサ並びに固体電解コンデンサ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003282364A (ja) * 2002-03-25 2003-10-03 Jcc Engineering Co Ltd 端子付き電極箔並びにその製造方法及び装置
JP2008091562A (ja) * 2006-09-29 2008-04-17 Nippon Chemicon Corp 電解コンデンサ

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102479616A (zh) * 2010-11-23 2012-05-30 尼吉康株式会社 引脚框及其制造装置、固体电解电容器及其制造方法
JP2012114438A (ja) * 2010-11-23 2012-06-14 Nichicon Corp リードフレーム及びその製造装置、並びに固体電解コンデンサ及びその製造方法
KR20190108113A (ko) * 2017-01-25 2019-09-23 닛뽄 케미콘 가부시끼가이샤 콘덴서 및 그 제조 방법
EP3576118A4 (fr) * 2017-01-25 2020-11-04 Nippon Chemi-Con Corporation Condensateur et son procédé de fabrication
US11017956B2 (en) * 2017-01-25 2021-05-25 Nippon Chemi-Con Corporation Capacitor and method for manufacturing same
KR102436450B1 (ko) * 2017-01-25 2022-08-24 닛뽄 케미콘 가부시끼가이샤 콘덴서 및 그 제조 방법
WO2024202916A1 (fr) * 2023-03-28 2024-10-03 日本ケミコン株式会社 Condensateur et son procédé de fabrication
JP7586215B2 (ja) 2023-03-28 2024-11-19 日本ケミコン株式会社 コンデンサおよびその製造方法

Also Published As

Publication number Publication date
KR101683249B1 (ko) 2016-12-06
CN102217014A (zh) 2011-10-12
CN102217014B (zh) 2014-03-26
JP2010239059A (ja) 2010-10-21
JP5321817B2 (ja) 2013-10-23
KR20120004959A (ko) 2012-01-13

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