WO2024157804A1 - 固体電解コンデンサおよび固体電解コンデンサの製造方法 - Google Patents

固体電解コンデンサおよび固体電解コンデンサの製造方法 Download PDF

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Publication number
WO2024157804A1
WO2024157804A1 PCT/JP2024/000628 JP2024000628W WO2024157804A1 WO 2024157804 A1 WO2024157804 A1 WO 2024157804A1 JP 2024000628 W JP2024000628 W JP 2024000628W WO 2024157804 A1 WO2024157804 A1 WO 2024157804A1
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Prior art keywords
cathode
solid electrolytic
anode
terminal
electrolytic capacitor
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Ceased
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PCT/JP2024/000628
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English (en)
French (fr)
Japanese (ja)
Inventor
幸二 高橋
浩之 半田
昇 根来
周作 鯉江
健司 倉貫
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2024572968A priority Critical patent/JPWO2024157804A1/ja
Priority to CN202480008448.XA priority patent/CN120569796A/zh
Publication of WO2024157804A1 publication Critical patent/WO2024157804A1/ja
Priority to US19/252,416 priority patent/US20250322994A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H01G9/15—Solid 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
    • 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
    • H01G9/022—Electrolytes; Absorbents
    • H01G9/025—Solid electrolytes
    • H01G9/028—Organic semiconducting electrolytes, e.g. TCNQ
    • 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
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • 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
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052—Sintered electrodes
    • 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

  • This disclosure relates to a solid electrolytic capacitor and a method for manufacturing a solid electrolytic capacitor.
  • Patent Document 1 Conventionally, surface-mounted capacitors known as transmission line type noise filters are known (for example, see Patent Document 1).
  • the surface-mounted capacitor in Patent Document 1 comprises a box-shaped resin molded case base, multiple capacitor elements stacked with anodes at both ends and cathodes in the center, and a box-shaped case lid, and, if necessary, further comprises a metal plate that is engaged with the inside of the case lid to compensate for the conductivity of the cathodes of the capacitor elements.
  • the surface mount capacitor of Patent Document 1 cannot be easily manufactured due to the large number of components. Furthermore, further improvement in the noise filtering characteristics of this type of surface mount capacitor is desired. In this situation, one of the objectives of this disclosure is to achieve both good noise filtering characteristics and ease of manufacturing.
  • the solid electrolytic capacitor includes a plurality of capacitor elements, each of which has an anode body and a cathode part formed on the surface of the anode body via a dielectric layer, with a portion of the anode body protruding from both ends of the cathode part and stacked on top of each other, two anode terminals electrically connected to the two protruding parts of the anode body, a cathode terminal electrically connected to the cathode part, and an exterior resin that covers the plurality of capacitor elements, the anode terminal, and the cathode terminal so that a portion of each of the anode terminal and the cathode terminal is exposed, and the two protruding parts of each of the capacitor elements are electrically conductive to each other, and the cathode terminal has a mounting surface part exposed from the exterior resin and a side wall part that rises continuously from the mounting surface part and is electrically connected to a side surface of
  • the manufacturing method includes a first processing step of cutting and bending a predetermined frame raw material to produce intermediate products for the anode terminal and the cathode terminal in an integrated state, a stacking step of stacking the plurality of capacitor elements on the intermediate product, a connection step of electrically connecting a portion of the intermediate product corresponding to the anode terminal to the anode body and electrically connecting a portion of the intermediate product corresponding to the cathode terminal to the cathode part, a molding step of molding the plurality of capacitor elements and the intermediate product to form the exterior resin, and a second processing step of cutting and bending the intermediate product to form the anode terminal and the cathode terminal.
  • This disclosure makes it possible to achieve both good noise filtering characteristics and ease of manufacturing.
  • FIG. 1 is a side perspective view illustrating a schematic diagram of an example of a solid electrolytic capacitor according to the present disclosure.
  • FIG. 2 is a side cross-sectional view that typically illustrates a capacitor element.
  • FIG. 2 is a perspective view illustrating a plurality of capacitor elements and a cathode terminal.
  • the solid electrolytic capacitor according to the present disclosure can be used as, for example, a three-terminal transmission line component having a noise filter function.
  • the solid electrolytic capacitor according to the present disclosure includes a plurality of capacitor elements, two anode terminals, a cathode terminal, and an exterior resin. Note that it is sufficient for there to be two or more anode terminals and one or more cathode terminals.
  • Each of the multiple capacitor elements has an anode body and a cathode portion formed on the surface of the anode body via a dielectric layer, and a part of the anode body protrudes from each of the opposing ends of the cathode portion.
  • the part of the anode body protruding from both ends of the cathode portion is also referred to as a protruding portion.
  • the multiple capacitor elements are stacked on top of each other.
  • the two protruding portions of the anode body are electrically conductive to each other.
  • Each capacitor element may further have an insulating portion provided between the anode body and the cathode portion to electrically insulate them from each other.
  • the insulating portion may be composed of, for example, insulating tape or insulating resin.
  • the anode body may be made of a valve metal.
  • the valve metal that constitutes the anode body include aluminum, tantalum, niobium, and titanium.
  • the anode body may be a valve metal foil or a sintered body of valve metal particles. Adjacent anode bodies in the stacking direction may be electrically connected to each other.
  • the dielectric layer may cover at least a portion of the surface of the anode body.
  • the dielectric layer may be composed of an oxide (e.g., aluminum oxide) formed on the surface of the anode body by a liquid phase method such as anodization, or a gas phase method such as vapor deposition or atomic layer deposition.
  • the dielectric layer is formed so as to be interposed at least between the anode body and the cathode portion.
  • the cathode part may have a solid electrolyte layer covering at least a portion of the surface of the dielectric layer, and a cathode layer covering at least a portion of the surface of the solid electrolyte layer.
  • the cathode parts adjacent to each other in the stacking direction may be electrically connected to each other.
  • the solid electrolyte layer may include a conductive polymer.
  • the solid electrolyte layer may further include a dopant, as necessary.
  • the conductive polymer may be a known one used in solid electrolytic capacitors, such as a ⁇ -conjugated conductive polymer.
  • conductive polymers include polymers having a basic skeleton of polypyrrole, polythiophene, polyaniline, polyfuran, polyacetylene, polyphenylene, polyphenylenevinylene, polyacene, and polythiophenevinylene. Of these, polymers having a basic skeleton of polypyrrole, polythiophene, or polyaniline are preferred.
  • the above polymers include homopolymers, copolymers of two or more monomers, and derivatives thereof (such as substituted products having a substituent).
  • polythiophenes include poly(3,4-ethylenedioxythiophene).
  • the conductive polymers may be used alone or in combination of two or more.
  • the dopant is, for example, at least one selected from the group consisting of low molecular weight anions and polyanions.
  • low molecular weight anions include, but are not limited to, sulfate ions, nitrate ions, phosphate ions, borate ions, organic sulfonate ions, and carboxylate ions.
  • dopants that generate organic sulfonate ions include, for example, benzenesulfonic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid.
  • polyanions include, for example, polymer-type polysulfonic acids and polymer-type polycarboxylic acids.
  • polymer-type polysulfonic acids examples include polyvinylsulfonic acid, polystyrenesulfonic acid, polyallylsulfonic acid, polyacrylicsulfonic acid, and polymethacrylicsulfonic acid.
  • polymer-type polycarboxylic acids examples include polyacrylic acid and polymethacrylic acid.
  • polyanions include polyestersulfonic acid and phenolsulfonic acid novolac resin. However, the polyanions are not limited to these.
  • the solid electrolyte layer may further contain known additives and known conductive materials other than conductive polymers, as necessary.
  • conductive materials include at least one selected from the group consisting of conductive inorganic materials such as manganese dioxide and TCNQ complex salts.
  • the cathode layer may be composed of a carbon layer formed on the surface of the solid electrolyte layer and a conductor layer formed on the surface of the carbon layer.
  • the conductor layer may be composed of silver paste.
  • the silver paste for example, a composition containing silver particles and a resin component (binder resin) may be used.
  • a resin component a thermoplastic resin may be used, but it is preferable to use a thermosetting resin such as an imide resin or an epoxy resin.
  • the two anode terminals are electrically connected to the two protruding portions of the anode body, respectively.
  • one anode terminal (first anode terminal) is electrically connected to a protruding portion protruding from one end of the cathode part
  • the other anode terminal (second anode terminal) is electrically connected to a protruding portion protruding from the other end of the cathode part.
  • the first anode terminal and the second anode terminal may each be divided into two or more parts.
  • the anode terminal may be made of copper, copper alloy, aluminum, or aluminum alloy, and may be plated.
  • the first and second anode terminals may be electrically connected to the two protruding portions of each anode body of the multiple capacitor elements.
  • the anode terminal may be electrically connected to the protruding portions by crimping or by welding (e.g., laser welding or resistance welding).
  • the cathode terminal is electrically connected to the cathode portion.
  • the cathode terminal may be electrically connected to each of the cathode portions of the multiple capacitor elements.
  • the cathode terminal may be electrically connected to the cathode portion via a conductive adhesive.
  • the cathode terminal may be made of copper, a copper alloy, aluminum, or an aluminum alloy, and may be plated.
  • the constituent material of the cathode terminal may be the same as or different from the constituent material of the anode terminal.
  • the cathode terminal may be divided into two or more parts.
  • the exterior resin covers the multiple capacitor elements, the anode terminals, and the cathode terminals so that a portion of each of the anode terminals and the cathode terminals is exposed.
  • the exposed portions of each of the anode terminals and the cathode terminals function as external terminals of the solid electrolytic capacitor.
  • the exterior resin may be made of an insulating resin material.
  • the exterior resin may be a cured product of a thermosetting resin that includes, for example, an epoxy resin, and may include a filler as necessary.
  • the cathode terminal has a mounting surface portion exposed from the exterior resin, and a side wall portion rising continuously from the mounting surface portion and electrically connected to the side surface of each cathode portion.
  • the mounting surface portion and the side wall portion are integrally formed with each other.
  • the mounting surface portion may be electrically connected to the cathode portion of the capacitor element closest to it.
  • the side wall portion may be electrically connected to the side surface of each cathode portion via a conductive adhesive.
  • the presence of such sidewalls reduces the impedance resulting from the resistance and inductance components of the cathode terminal, improving the noise filtering characteristics of the solid electrolytic capacitor.
  • the sidewalls are formed integrally with the mounting surface, a cathode terminal having a mounting surface and sidewalls can be easily produced, for example, by bending a specified original frame. Therefore, the solid electrolytic capacitor according to the present disclosure can achieve both good noise filtering characteristics and ease of manufacture.
  • the cathode terminal may have two or more sidewalls electrically connected to both side surfaces of each cathode portion. With this configuration, the noise filter characteristics of the solid electrolytic capacitor can be further improved compared to when the sidewalls are electrically connected to only one side surface of each cathode portion.
  • the number of sidewalls is not particularly limited.
  • the cathode terminal may further have an upper wall portion that is formed integrally with the side wall portion, covers at least a portion of the upper surface of the cathode portion of the capacitor element that is furthest from the mounting surface portion, and is electrically connected to the upper surface.
  • a method for manufacturing a solid electrolytic capacitor according to the present disclosure is a method for manufacturing the above-mentioned solid electrolytic capacitor, and includes a first processing step, a lamination step, a connection step, a molding step, and a second processing step.
  • a specified frame roll is cut and bent to produce intermediate anode and cathode terminals that are integrated together.
  • the multiple capacitor elements are stacked on top of the intermediate product.
  • the multiple capacitor elements may be stacked so that the protruding portion of the anode body of each capacitor element is positioned on top of the intermediate product of the anode terminal, and the cathode portion of each capacitor element is positioned on top of the intermediate product of the cathode terminal.
  • the portion of the intermediate product that corresponds to the anode terminal is electrically connected to the anode body, and the portion of the intermediate product that corresponds to the cathode terminal is electrically connected to the cathode part.
  • the former electrical connection may be achieved, for example, by bending the intermediate product.
  • the latter electrical connection may be achieved, for example, by using a conductive adhesive.
  • the multiple capacitor elements, anode terminals, and cathode terminals are molded to form an exterior resin.
  • the multiple capacitor elements, anode terminals, and cathode terminals are placed in a specified mold, and molten insulating resin (e.g., thermosetting resin) may be injected into the mold and solidified to form the exterior resin.
  • molten insulating resin e.g., thermosetting resin
  • the intermediate product is cut and bent to form an anode terminal and a cathode terminal.
  • the intermediate product which was previously one unit, is cut to form two or more anode terminals and one or more cathode terminals that are separate from each other.
  • a side wall portion may be provided on the intermediate product.
  • the side wall portion can be used as a guide in the lamination step, which can increase the ease of manufacturing the solid electrolytic capacitor.
  • an integrated cathode terminal with a side wall portion can achieve both good noise filtering characteristics and ease of manufacture.
  • the solid electrolytic capacitor 10 of this embodiment includes multiple (three in this example) capacitor elements 11, two anode terminals 17, a cathode terminal 18, and an exterior resin 19.
  • the side wall portion 18b which will be described later, is indicated by a two-dot chain line.
  • Each of the multiple capacitor elements 11 has an anode body 12 and a cathode portion 13 formed on the surface of the anode body 12 via a dielectric layer 14, and a part of the anode body 12 protrudes from both opposing ends of the cathode portion 13 (the left and right ends in FIG. 1).
  • the part of the anode body 12 protruding from both ends of the cathode portion 13 is also referred to as a protruding portion 12a.
  • the multiple capacitor elements 11 are stacked on top of each other.
  • the two protruding portions 12a of the anode body 12 are electrically conductive to each other.
  • Each capacitor element 11 further has an insulating portion 15 provided between the anode body 12 and the cathode portion 13 to electrically insulate them from each other.
  • the anode bodies 12 are made of a foil of a valve metal (aluminum in this example), but are not limited to this. Adjacent anode bodies 12 in the stacking direction are electrically connected to each other. Thus, all the anode bodies 12 are electrically connected to each other.
  • the dielectric layer 14 covers at least a portion of the surface of the anode body 12.
  • the dielectric layer 14 is made of an oxide (aluminum oxide in this example) formed on the surface of the anode body 12 that has been roughened, but is not limited to this.
  • the cathode portion 13 has a solid electrolyte layer that covers at least a portion of the dielectric layer 14, and a cathode layer that covers at least a portion of the surface of the solid electrolyte layer.
  • the cathode portions 13 adjacent to each other in the stacking direction are electrically connected to each other via the conductive paste 16. Thus, all of the cathode portions 13 are electrically connected to each other.
  • the solid electrolyte layer contains a conductive polymer and a dopant.
  • the cathode layer is composed of a carbon layer formed on the surface of the solid electrolyte layer and a conductor layer formed on the surface of the carbon layer.
  • the conductor layer may be composed of silver paste.
  • the two anode terminals 17 are electrically connected to the two protruding portions 12a of the anode body 12, respectively.
  • the anode terminals 17 are made of a copper alloy, but are not limited to this.
  • the anode terminals 17 are electrically connected to the protruding portions 12a by crimping. Note that instead of or in addition to crimping, the anode terminals 17 may be welded to the protruding portions 12a.
  • the cathode terminal 18 is electrically connected to the cathode portion 13, for example, via a conductive adhesive.
  • the cathode terminal 18 is made of a copper alloy, but is not limited to this.
  • the material of the cathode terminal 18 is the same as the material of the anode terminal 17.
  • the exterior resin 19 covers the multiple capacitor elements 11, the anode terminals 17, and the cathode terminals 18 so that a portion of each of the anode terminals 17 and the cathode terminals 18 is exposed.
  • the exposed portions of each of the anode terminals 17 and the cathode terminals 18 function as external terminals of the solid electrolytic capacitor 10.
  • the exterior resin 19 is made of an insulating resin material that contains a filler.
  • the cathode terminal 18 has a mounting surface portion 18a exposed from the exterior resin 19, and a side wall portion 18b that rises continuously from the mounting surface portion 18a and is electrically connected to the side of each cathode portion 13.
  • the mounting surface portion 18a is electrically connected to the cathode portion 13 of the capacitor element 11 that is closest to it (the lowest in FIG. 1).
  • the side wall portion 18b is electrically connected to the side of each cathode portion 13 via a conductive adhesive (not shown).
  • the cathode terminal 18 has two or more side wall portions 18b that are electrically connected to both sides of each cathode portion 13 (the sides in front of and behind the paper in FIG. 1).
  • the manufacturing method includes a first processing step, a lamination step, a connection step, a molding step, and a second processing step.
  • a specified frame roll (not shown) is cut and bent to produce intermediate products (not shown) of the anode terminal 17 and the cathode terminal 18, each of which is integrated with the other.
  • multiple capacitor elements 11 are stacked on the intermediate product.
  • the multiple capacitor elements 11 are stacked so that the protrusion 12a of the anode body 12 of each capacitor element 11 is positioned on the intermediate product of the anode terminal 17, and the cathode portion 13 of each capacitor element 11 is positioned on the intermediate product of the cathode terminal 18.
  • the portion of the intermediate product corresponding to the anode terminal 17 is electrically connected to the protruding portion 12a of the anode body 12 of each capacitor element 11, and the portion of the intermediate product corresponding to the cathode terminal 18 is electrically connected to the cathode portion 13 of each capacitor element 11.
  • the former electrical connection may be achieved by bending the intermediate product.
  • the latter electrical connection may be achieved using a conductive adhesive.
  • the multiple capacitor elements 11, anode terminals 17, and cathode terminals 18 are molded to form exterior resin 19.
  • the multiple capacitor elements 11, anode terminals 17, and cathode terminals 18 are placed in a specified mold (not shown), and molten insulating resin is injected into the mold and allowed to solidify to form the exterior resin.
  • the intermediate product is cut and bent to form the anode terminal 17 and the cathode terminal 18.
  • the intermediate product which was previously one piece, is cut to form two separate anode terminals 17 and cathode terminals 18.
  • the first processing step it is preferable to provide two or more side walls 18b on the intermediate product.
  • the side walls 18b can be used as guides in the stacking step.
  • FIG. 3 The solid electrolytic capacitor according to claim 1, wherein the cathode section has a solid electrolyte layer including a conductive polymer that covers at least a portion of the dielectric layer.
  • FIG. 4 A method for producing a solid electrolytic capacitor according to any one of techniques 1 to 3, comprising the steps of: a first processing step of cutting and bending a predetermined frame raw material to produce intermediate products of the anode terminal and the cathode terminal in an integrated state; a lamination step of laminating the plurality of capacitor elements on the intermediate product; a connecting step of electrically connecting a portion of the intermediate product corresponding to the anode terminal and the anode body, and electrically connecting a portion of the intermediate product corresponding to the cathode terminal and the cathode portion; a molding step of molding the plurality of capacitor elements and the intermediate product to form the exterior resin; a second processing step of cutting and bending the intermediate product to form the anode terminal and the cathode terminal; A method for manufacturing a
  • the characteristics of the solid electrolytic capacitors 10 of the examples and comparative examples shown below were evaluated. Specifically, the amount of noise suppression when a 100 MHz noise signal was input from one anode terminal 17 to the other anode terminal 17 was evaluated for the solid electrolytic capacitors 10 of the examples and comparative examples.
  • Example The solid electrolytic capacitor 10 of the type shown in the above embodiment was evaluated.
  • the noise suppression amount was ⁇ 79.2 dB.
  • the noise level was 62% of the noise level of the comparative solid electrolytic capacitor, which was set at 100%.
  • Comparative Example A solid electrolytic capacitor having the same configuration as solid electrolytic capacitor 10 of the example was evaluated, except that cathode terminal 18 did not have side wall portion 18b.
  • the noise suppression amount was ⁇ 75.0 dB.
  • the solid electrolytic capacitor 10 of the embodiment had a significantly higher noise suppression amount than the solid electrolytic capacitor of the comparative example. Therefore, it can be said that the superiority of the embodiment is demonstrated.
  • This disclosure can be used in solid electrolytic capacitors and methods for manufacturing solid electrolytic capacitors.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
PCT/JP2024/000628 2023-01-24 2024-01-12 固体電解コンデンサおよび固体電解コンデンサの製造方法 Ceased WO2024157804A1 (ja)

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JP2024572968A JPWO2024157804A1 (https=) 2023-01-24 2024-01-12
CN202480008448.XA CN120569796A (zh) 2023-01-24 2024-01-12 固体电解电容器及固体电解电容器的制造方法
US19/252,416 US20250322994A1 (en) 2023-01-24 2025-06-27 Solid electrolytic capacitor and method for manufacturing solid electrolytic capacitor

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JP2023-008712 2023-01-24
JP2023008712 2023-01-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009010067A (ja) * 2007-06-27 2009-01-15 Panasonic Corp チップ形固体電解コンデンサ
JP2009253020A (ja) * 2008-04-07 2009-10-29 Nec Tokin Corp 固体電解コンデンサ
JP2011035057A (ja) * 2009-07-30 2011-02-17 Nichicon Corp 積層型固体電解コンデンサ
WO2012140836A1 (ja) * 2011-04-14 2012-10-18 パナソニック株式会社 電解コンデンサ
WO2021172236A1 (ja) * 2020-02-28 2021-09-02 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009010067A (ja) * 2007-06-27 2009-01-15 Panasonic Corp チップ形固体電解コンデンサ
JP2009253020A (ja) * 2008-04-07 2009-10-29 Nec Tokin Corp 固体電解コンデンサ
JP2011035057A (ja) * 2009-07-30 2011-02-17 Nichicon Corp 積層型固体電解コンデンサ
WO2012140836A1 (ja) * 2011-04-14 2012-10-18 パナソニック株式会社 電解コンデンサ
WO2021172236A1 (ja) * 2020-02-28 2021-09-02 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

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US20250322994A1 (en) 2025-10-16
JPWO2024157804A1 (https=) 2024-08-02

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