WO2006086972A1 - Condensateur ayant une resistance serie equivalente faible, et systeme de condensateur - Google Patents

Condensateur ayant une resistance serie equivalente faible, et systeme de condensateur Download PDF

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Publication number
WO2006086972A1
WO2006086972A1 PCT/DE2006/000293 DE2006000293W WO2006086972A1 WO 2006086972 A1 WO2006086972 A1 WO 2006086972A1 DE 2006000293 W DE2006000293 W DE 2006000293W WO 2006086972 A1 WO2006086972 A1 WO 2006086972A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
anode
housing
terminal
cathode
Prior art date
Application number
PCT/DE2006/000293
Other languages
German (de)
English (en)
Inventor
Dieter Hahn
Willy Knabe
Melanie Stenzel
Holger Zillgen
Original Assignee
Kemet Electronics Corporation
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 Kemet Electronics Corporation filed Critical Kemet Electronics Corporation
Publication of WO2006086972A1 publication Critical patent/WO2006086972A1/fr

Links

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
    • H01G9/012—Terminals specially adapted for solid capacitors
    • 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
    • H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
    • 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
    • H01G9/08—Housing; Encapsulation
    • 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
    • H01G9/14—Structural combinations or circuits for modifying, or compensating for, electric characteristics of electrolytic capacitors
    • 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
    • H01G9/26—Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices with each other

Definitions

  • An object to be solved is to provide a capacitor which has a low ESR value for a large capacitance voltage value.
  • a capacitor is provided with a plurality of capacitor elements arranged in a housing, preferably next to one another, each having a rod-shaped anode body. This makes it possible to provide a particularly flat capacitor with a large CV value and at the same time a low ESR value.
  • a rod is to be understood as meaning a body in which the ratio of its length to its cross-sectional size is at least a factor of 2.
  • the use of a plurality of rod-shaped anode body instead of only one anode body in a capacitor housing has the advantage that it increases the externally contactable surface of the anode body or the corresponding capacitance element.
  • the anode body can in the direction transverse to its main axis z. B. have a rectangular, in particular a square cross-section. However, the anode bodies can also be cycled designed to be less fussy or different.
  • an anode conductor which is preferably selected as a wire.
  • the anode conductor can also have the shape of a strip.
  • the capacitor element has a dielectric layer arranged on the anode body and a cathode layer arranged on this layer, which preferably serves as a cathode conductor of the capacitor element.
  • capacitor elements or anode body are preferably arranged in a row.
  • the anode bodies are arranged in several, superimposed rows.
  • Various capacitor elements arranged in the common housing are preferably electrically connected to one another in the interior of the housing, for example, in a preferred variant, connected in parallel to one another. This makes it possible to reduce the equivalent series resistance (ESR value) while achieving a high capacitance voltage value.
  • ESR value equivalent series resistance
  • the Anodenableiter, the different, z. B. are assigned in a row arranged capacitances are preferably contacted by a single, led out of the housing anode terminal. This contacting is preferably carried out in the housing, but can also be done outside.
  • the cathode layers are different, for. B. arranged in a row capacitors through a common, led out of the housing cathode terminal contacted. This contacting is preferably carried out in the housing.
  • Each terminal has an area extending in the housing and an outer area (outer tab). A part of the outer area forms a preferably external surface mounting of the device suitable for surface mounting.
  • the capacitor elements arranged in different rows are conductively connected to one another on the bottom side and on the cathode side with one another and to the corresponding connection by preferably strip-shaped connecting elements.
  • the anode terminal contacts the first, preferably lowest, row of anode bodies.
  • the second row of anode bodies is mechanically fixed and electrically connected to the anode terminal by a first connecting element.
  • the second and third series of anode bodies are mechanically fixed and electrically connected to one another by a second connection element.
  • the superposed capacitors are z. B. by means of an adhesive connected with each other.
  • Each capacitor has its own housing and its own connections led out of the housing (cathode connection, anode connection).
  • a plurality of capacitor elements are arranged side by side, each having a rod-shaped anode body.
  • Two capacitors of the capacitor arrangement are connected to each other by means of the corresponding terminals z.
  • Figure 1 is a front perspective view of a capacitor having a plurality of rod-shaped anode bodies whose anode conductors represent wires;
  • FIG. 2 shows the capacitor according to FIG. 1 or 3A in cross section
  • Figure 3A is a fragmentary front perspective view or the construction of a capacitor whose anode body have strip-shaped Anodenableiter, from above;
  • Figure 3B is a front perspective view of the capacitor of Figure 3A from below;
  • Figure 4A is a fragmentary front perspective view and the construction of a capacitor with a plurality of superposed rows of capacitor elements;
  • FIG. 4B shows the capacitor according to FIG. 4A in cross section (first variant for connecting rows of the capacitor elements to one another);
  • FIG. 4C shows the capacitor according to FIG. 4A in cross section (second variant for connecting rows of the capacitor elements to one another);
  • Figure 5A is a front perspective view and the construction of a capacitor arrangement with a plurality of capacitors, each formed in accordance with Figure 1;
  • FIG. 5B shows a further perspective front view of the capacitor arrangement according to FIG. 5A;
  • Figures 6, 7 each show a variant of the capacitor arrangement according to Figures 5A and 5B in schematic cross section.
  • FIG. 1 shows an exemplary capacitor.
  • the capacitor has a housing 10 and a plurality of rows of capacitor elements arranged side by side in this housing.
  • the housing 10 is preferably made of a plastic.
  • Each capacitor element corresponds to its own anode body 201, 202 and 203.
  • the anode body 201, 202, 203 is, for example, a porous sintered body of tantalum powder. From the interior of the anode body an anode conductor 21 is led out. The anode conductor 21 is firmly connected to an anode terminal 11 of the capacitor.
  • the capacitor elements arranged in a row are connected in preferred embodiments, on the one hand with a common 'first terminal, preferably anode terminal 11 and on the other hand with a common second terminal, preferably cathode terminal 12 of the capacitor electrically and mechanically fixed.
  • a common 'first terminal preferably anode terminal 11
  • a common second terminal preferably cathode terminal 12 of the capacitor electrically and mechanically fixed.
  • the capacitor elements of one row are fixedly connected to the anode or cathode connection led out of the housing via a connecting element (eg connecting pieces 41, 42 in FIG.
  • a dielectric layer 23 shown schematically in Figure 2 is arranged on the outer and inner surface of the anode body.
  • an electrically conductive cathode layer 22 is arranged, whose outer part is fixedly connected to a cathode terminal 12 of the capacitor.
  • Each terminal 11, 12 of the capacitor is a corresponding to the course of the housing angled metal strip.
  • the terminal 11 or 12 extends z. B. outside along a side surface of the housing 10 and is to form a surface mountable external terminal IIa or 12a z. B. angled below the housing bottom in the direction of the body pointing direction.
  • the external connections IIa and 12a are located on the underside of the housing.
  • the anode bodies 201, 202 and 203 associated with the various capacitor elements are arranged in a row in this example so that the anode conductors 21 of the capacitor elements arranged in a row are brought to a plane. This makes it possible to use all anode arresters to contact a single anode contact 11, see Figure 3B.
  • the cathode layers 22 of different capacitor elements are also contacted by a single cathode contact 12.
  • the anode conductors shown in FIG. 1 represent wires.
  • the anode conductors may be strip-shaped in other variants presented in FIGS. 3A and 3B.
  • the rod-shaped anode body 201 to 203 have a rectangular or square cross section in Figures 1 and 3A. It is also possible to form the rod-shaped Anodenk ⁇ rper cylindrical or with any other cross-section.
  • FIG. 4A shows an advantageous variant of the capacitor in which a plurality of capacitor elements are arranged next to one another in a row, with several rows R1, R2, R3 of capacitor elements being stacked on top of one another.
  • Each capacitor element comprises an anode body 201-j to 203-j, a dielectric layer not shown here, and a cathode layer 22 -j disposed thereon.
  • FIG. 4B shows how several rows of the capacitor elements can be contacted by a single anode terminal 11.
  • the anode terminal 11 is folded inside the housing S-shaped.
  • the cathode terminal 12 is fixedly connected to the cathode layer 22-1 of the first row capacitors 201-1, 202-1, 203-1 (see also FIGS. 3B and 4A).
  • the first connector 41 is simply angled here.
  • the connecting piece 41 is electrically and mechanically fixed at its first end to the cathode terminal 12 and at its second end to the cathode layer 22-2 of the capacitor located in the second row R2.
  • the second connecting piece 42 partially overlapping with the first connecting piece 41 is electrically and mechanically fixed at its first end to the first connecting piece 41 and at its second end to the cathode layer 22-3 of the capacitance located in the third row R3.
  • the various superimposed rows of capacitor elements can also be connected to each other in some other way.
  • partially overlapping connecting elements which are preferably strip-shaped, also for the connection between the anode conductors arranged in different rows R1, R2, R3.
  • FIG. 4C shows a variant of the capacitor with a plurality of rows of capacitor elements R 1, R 2, R 3 in a housing, wherein the connection between the rows takes place by means of double or Z-shaped angled connecting elements 41 to 44.
  • the cathode terminal 12 is fixedly connected to cathode layers 22-1 of the first capacitance series Rl.
  • the first connecting element 41 is fixedly connected at its first end to cathode layers 22-2 of the second row R2 and at its second end fixed to the cathode terminal 12.
  • the second connecting element 42 is fixed at its first end to thode layers 22-3 of the third row R3 and at its second end fixedly connected to the first connecting element 41.
  • the anode terminal 11 is fixedly connected to anode conductors 21-1 of the first row R1.
  • the third connection element 43 is fixedly connected at its first end to anode conductors 21-2 of the second row R2 and at its second end fixed to the anode terminal 11.
  • the fourth connecting element 44 is fixedly connected at its first end to anode conductors 21-3 of the third row R3 and at its second end fixed to the third connecting element 43.
  • the connecting pieces 41 to 44 in FIGS. 4B, 4C are preferably sheet metal strips.
  • suitable recesses for receiving SMD contacts IIa, 12a are formed to reduce the height of the capacitor.
  • all the anode bodies are arranged in the same housing 10.
  • FIGS. 5A, 5B and 6 it is possible to have a plurality of respective individual connections-anode connections 11-1, 11-2, 11-3 and cathode connections 12-1, 12-2, 12-3 To arrange capacitors Cl, C2, C3 one above the other and to connect them firmly together.
  • the partially overlapping anode terminals are connected to each other e.g. B. firmly connected by means of a spot weld.
  • the anode terminal 11-1 of the lowermost capacitor C1 is folded on the underside (see FIGS. 6, 7) so that it blocks the bottom forms side surface mountable outer terminal of the overall arrangement.
  • each capacitor C1 to C3 is assigned its own housing 10-1, 10-2 and 10-3.
  • the arranged in a row anode body of the same capacitor share a common housing.
  • the anode terminals 11-1, 11-2 and 11-3 of various capacitors outside the capacitor housings 10-1, 10-2, 10-3 are electrically and mechanically fixed to one another.
  • the cathode terminals 12-1, 12-2 and 12-3 of different capacitors are fixedly connected to each other outside the capacitor housing.
  • the electrical connection of the capacitor elements arranged in different rows R 1, R 2, R 3 within the common housing 10 takes place in FIG. 4B.
  • the connection of the cathode layers of the capacitors arranged in different rows takes place in FIG. 4B within the common housing.
  • FIG. 7 shows a further possibility for connecting capacitors C 1, C 2 and C 3 stacked on top of each other.
  • the anode terminals 11-2, 11-3 of the upper capacitors are Z-shaped and the anode terminal 11-1 of the lowermost capacitor is angled in an XJ shape.
  • capacitors have been illustrated by means of only a few embodiments. However, they are not limited to these or specific applications.
  • any suitable alloys or valve metals can be used as the material for the anode body.
  • the capacitors may in particular chip capacitors, for. B. tantalum / niobium capacitors.
  • Capacitors, j 1, 2, 3 12 -j cathode terminals stacked one above the other
  • 201, 202, 203 anode body 201-j, 202-j, 203-j in j. Row arranged anode body

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

La présente invention concerne un condensateur par ex. un condensateur au tantale, qui se caractérise par une résistance série équivalente faible (valeur ESR), pour un produit de tension de capacité élevé. Le condensateur présente plusieurs capacités disposées dans un boîtier (10), qui présentent respectivement un corps anodique (201, 202) en forme de barre. Grâce à l'invention, il est possible de mettre à disposition un condensateur particulièrement plat ayant une valeur CV élevée pour une valeur ESR faible.
PCT/DE2006/000293 2005-02-18 2006-02-17 Condensateur ayant une resistance serie equivalente faible, et systeme de condensateur WO2006086972A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510007582 DE102005007582A1 (de) 2005-02-18 2005-02-18 Kondensator mit einem niedrigen Ersatzserienwiderstand und Kondensatoranordung
DE102005007582.7 2005-02-18

Publications (1)

Publication Number Publication Date
WO2006086972A1 true WO2006086972A1 (fr) 2006-08-24

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Application Number Title Priority Date Filing Date
PCT/DE2006/000293 WO2006086972A1 (fr) 2005-02-18 2006-02-17 Condensateur ayant une resistance serie equivalente faible, et systeme de condensateur

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DE (1) DE102005007582A1 (fr)
WO (1) WO2006086972A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100073848A1 (en) * 2008-09-25 2010-03-25 Tdk Corporation Solid electrolytic capacitor and production method thereof
EP2728595A1 (fr) * 2011-06-29 2014-05-07 Soshin Electric Co. Ltd. Condensateur
KR20190012198A (ko) * 2016-05-25 2019-02-08 비쉐이 스프라그, 인코포레이티드 고성능 및 고신뢰도의 고체 전해 탄탈륨 커패시터 및 스크리닝 방법
WO2023037913A1 (fr) * 2021-09-13 2023-03-16 ルビコン株式会社 Dispositif condensateur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5573396B2 (ja) * 2010-06-15 2014-08-20 富士通株式会社 固体電解コンデンサおよび電源回路

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Publication number Priority date Publication date Assignee Title
DE2432163A1 (de) * 1973-07-05 1975-01-23 Sprague Electric Co Kondensator und verfahren zu seiner herstellung
US6515842B1 (en) * 2000-03-30 2003-02-04 Avx Corporation Multiple array and method of making a multiple array
DE19941094A1 (de) * 1999-08-30 2003-07-10 Epcos Ag Kondensator und Verfahren zum Herstellen eines Anodenkörpers und eines Anodenableiters hierfür
US20030133256A1 (en) * 2001-11-30 2003-07-17 Matsushita Electric Industrial Co. Solid electrolytic capacitor and method for manufacturing the same
DE10222405A1 (de) * 2002-05-21 2003-12-18 Epcos Ag Chipkondensator und Verfahren zu dessen Herstellung

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DE2020330A1 (de) * 1970-04-25 1971-11-11 Glanzstoff Ag Verfahren zur Verbesserung der Stabilitaet von Polyestern
JPS605217B2 (ja) * 1978-09-28 1985-02-08 日本通信工業株式会社 低インピ−ダンスアルミニウム角形電解コンデンサ
JP3441088B2 (ja) * 1992-02-20 2003-08-25 昭和電工株式会社 固体電解コンデンサの製造方法
DE10057488B4 (de) * 2000-11-20 2006-05-24 Epcos Ag Kondensator
JP2003217989A (ja) * 2002-01-25 2003-07-31 Sanyo Electric Co Ltd 固体電解コンデンサ
DE10244713A1 (de) * 2002-07-18 2004-02-05 Epcos Ag Oberflächenmontierbares Bauelement und Verfahren zu dessen Herstellung
JP2004327887A (ja) * 2003-04-28 2004-11-18 Sanyo Electric Co Ltd コンデンサアレイ又は電池アレイ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432163A1 (de) * 1973-07-05 1975-01-23 Sprague Electric Co Kondensator und verfahren zu seiner herstellung
DE19941094A1 (de) * 1999-08-30 2003-07-10 Epcos Ag Kondensator und Verfahren zum Herstellen eines Anodenkörpers und eines Anodenableiters hierfür
US6515842B1 (en) * 2000-03-30 2003-02-04 Avx Corporation Multiple array and method of making a multiple array
US20030133256A1 (en) * 2001-11-30 2003-07-17 Matsushita Electric Industrial Co. Solid electrolytic capacitor and method for manufacturing the same
DE10222405A1 (de) * 2002-05-21 2003-12-18 Epcos Ag Chipkondensator und Verfahren zu dessen Herstellung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100073848A1 (en) * 2008-09-25 2010-03-25 Tdk Corporation Solid electrolytic capacitor and production method thereof
US8310817B2 (en) * 2008-09-25 2012-11-13 Tdk Corporation Solid electrolytic capacitor having plural terminals connected to canopy and production method thereof
EP2728595A1 (fr) * 2011-06-29 2014-05-07 Soshin Electric Co. Ltd. Condensateur
EP2728595A4 (fr) * 2011-06-29 2015-01-07 Soshin Electric Condensateur
KR20190012198A (ko) * 2016-05-25 2019-02-08 비쉐이 스프라그, 인코포레이티드 고성능 및 고신뢰도의 고체 전해 탄탈륨 커패시터 및 스크리닝 방법
KR102407072B1 (ko) * 2016-05-25 2022-06-08 비쉐이 스프라그, 인코포레이티드 고성능 및 고신뢰도의 고체 전해 탄탈륨 커패시터 및 스크리닝 방법
IL263164B (en) * 2016-05-25 2022-12-01 Vishay Sprague Inc Solid electrolyte tantalum capacitors with high reliability and performance and masking method
IL263164B2 (en) * 2016-05-25 2023-04-01 Vishay Sprague Inc Solid electrolyte tantalum capacitors with high reliability and performance and masking method
WO2023037913A1 (fr) * 2021-09-13 2023-03-16 ルビコン株式会社 Dispositif condensateur

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