WO2022138556A1 - 電解コンデンサ - Google Patents
電解コンデンサ Download PDFInfo
- Publication number
- WO2022138556A1 WO2022138556A1 PCT/JP2021/047002 JP2021047002W WO2022138556A1 WO 2022138556 A1 WO2022138556 A1 WO 2022138556A1 JP 2021047002 W JP2021047002 W JP 2021047002W WO 2022138556 A1 WO2022138556 A1 WO 2022138556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cathode
- anode
- extending
- terminal
- electrolytic capacitor
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 150
- 229920005989 resin Polymers 0.000 claims abstract description 59
- 239000011347 resin Substances 0.000 claims abstract description 59
- 239000012790 adhesive layer Substances 0.000 claims description 12
- 230000000630 rising effect Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 57
- 229910052751 metal Inorganic materials 0.000 description 37
- 239000002184 metal Substances 0.000 description 37
- 239000000463 material Substances 0.000 description 20
- 239000003792 electrolyte Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 12
- 229920001940 conductive polymer Polymers 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000002019 doping agent Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002923 metal particle Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 3
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 3
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229920000123 polythiophene Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 150000002697 manganese compounds Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Images
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
- H01G9/008—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
- H01G9/08—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
- H01G9/08—Housing; Encapsulation
- H01G9/10—Sealing, e.g. of lead-in wires
-
- 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
Definitions
- This disclosure relates to electrolytic capacitors.
- Electrolytic capacitors are installed in various electronic devices.
- the electrolytic capacitor usually includes an anode lead terminal and a cathode lead terminal that are electrically connected to the capacitor element, and an exterior resin that covers the capacitor element.
- Patent Documents 1 and 2 disclose a cathode lead terminal that facilitates positioning of a capacitor element. Specifically, Patent Document 1 discloses that both sides of a cathode lead terminal are bent upward to form a fitting portion, and a capacitor element is arranged in the fitting portion. Patent Document 2 discloses that a pair of side surface portions facing each other are provided on a cathode lead frame, and a capacitor element is placed between the pair of side surface portions.
- the lead terminal includes a terminal portion having an exposed surface exposed on the bottom surface of the electrolytic capacitor, and the exposed surface can be a joint surface with a printed circuit board or the like.
- the terminal portion may be separated from the bottom surface of the electrolytic capacitor (the exposed surface of the terminal portion is lifted from the bottom surface of the electrolytic capacitor) due to the expansion of the lead terminal during the reflow process, and improvement of the terminal strength is required.
- the electrolytic capacitor has a bottom surface and an upper surface opposite to the bottom surface.
- the electrolytic capacitor includes a capacitor element including an anode lead, an anode lead terminal and a cathode lead terminal electrically connected to the capacitor element, and an exterior resin arranged around the capacitor element, and the cathode.
- the lead terminal includes a cathode terminal portion having an exposed surface exposed on the bottom surface and two cathode anchor portions extending from the cathode terminal portion and embedded in the exterior resin, and the cathode terminal portion includes a cathode terminal portion.
- the two cathode anchor portions have two ends along the direction in which the anode lead extends, and the two cathode anchor portions are a cathode erecting portion that rises from the end side of the cathode terminal portion toward the upper surface, and the cathode erecting portion, respectively.
- the first extending portion of the two cathode anchor portions includes a first extending portion extending from the portion and a second extending portion extending from the first extending portion, and each of the first extending portions of the two cathode anchor portions is the upper end of the cathode standing portion.
- the second extending portion of the two cathode anchor portions rises toward the upper surface and is perpendicular to the direction in which the anode lead extends. It is provided so as to sandwich the capacitor element.
- FIG. 1 It is a perspective view which shows typically the structure of the example of the electrolytic capacitor of this disclosure. It is a perspective view schematically showing a part member of the electrolytic capacitor shown in FIG. 1. It is sectional drawing which shows typically the anode lead terminal of the electrolytic capacitor shown in FIG. 1. It is sectional drawing which shows typically the cathode lead terminal of the electrolytic capacitor shown in FIG. 1. It is a bottom view schematically showing the electrolytic capacitor shown in FIG. 1. It is sectional drawing which shows typically the electrolytic capacitor shown in FIG.
- the electrolytic capacitor of the present disclosure has a bottom surface and an upper surface opposite to the bottom surface.
- the bottom surface and the top surface may be referred to as “bottom surface (B)" and “top surface (T)” below.
- the electrolytic capacitor of the present disclosure includes a capacitor element including an anode lead, an anode lead terminal and a cathode lead terminal electrically connected to the capacitor element, and an exterior resin arranged around the capacitor element.
- the cathode lead terminal includes a cathode terminal portion having an exposed surface exposed on the bottom surface (B) and two cathode anchor portions extending from the cathode terminal portion and embedded in the exterior resin.
- the cathode lead terminal including the two cathode anchor portions may be referred to as a “lead terminal (L)”.
- the cathode terminal portion has two ends along the direction D1 in which the anode lead extends.
- Each of the two cathode anchor portions includes a cathode upright portion that rises from the end side of the cathode terminal portion toward the upper surface (T), and a first extending portion that bends and extends from the upper end of the cathode upright portion.
- the cathode anchor portion (cathode standing portion and cathode extending portion) is embedded in the exterior resin. Further, the metal sheet constituting the lead terminal (L) is bent at two points, the boundary between the cathode terminal portion and the cathode upright portion and the boundary between the cathode upright portion and the first extending portion. According to this configuration, the direction in which the cathode upright portion extends and the direction in which the first extending portion extends are different.
- the two cathode anchor portions are bent in different directions (reverse rotation directions) at the boundary between the cathode terminal portion and the cathode upright portion and the boundary between the cathode upright portion and the first extending portion, respectively.
- bending in different directions means that the metal sheet constituting the lead terminal (L) has a valley on one surface (the surface on the upper surface (T) side) of the metal sheet at the boundary between the cathode terminal portion and the cathode upright portion. It means that the surface is bent so as to form a mountain at the boundary between the cathode upright portion and the first extending portion.
- the first extending portions of the two cathode anchor portions are each bent from the upper end of the cathode standing portion and extend in a direction away from each other. That is, the first extending portions of the two cathode anchor portions are each bent from the upper end of the cathode upright portion and extend in a direction away from each other with respect to the direction D2 perpendicular to the direction D1 in which the anode lead extends.
- a high anchor effect is obtained by the two cathode anchor portions (cathode standing portion and first extending portion), and the terminal strength is enhanced.
- the entire surface of the cathode upright portion is covered with the exterior resin, it is possible to prevent the cathode terminal portion from being separated from the exterior resin (bottom surface of the electrolytic capacitor).
- the area behind the exposed surface of the cathode terminal is in contact with the exterior resin.
- the exterior resin enters between the capacitor element and the cathode terminal portion, the capacitor element is more stably fixed by the exterior resin, and the cathode terminal portion is further suppressed from being separated from the exterior resin, so that the anchor effect is obtained. Increase.
- the two cathode anchors further include a second extending portion extending from the first extending portion.
- the first extending portion and the second extending portion may be collectively referred to as a cathode extending portion.
- the second extending portion of the two cathode anchor portions rises toward the upper surface (B), respectively.
- the second extending portion is bent from the outer end of the first extending portion (the end opposite to the cathode standing portion) and extends toward the upper surface (B), and the direction in which the first extending portion extends and the second. 2
- the direction in which the extending portion extends is different. Therefore, by further providing the second extending portion together with the first extending portion, the anchor effect by the cathode anchor portion is further enhanced.
- the second extending portion of the two cathode anchor portions rises toward the upper surface (B), respectively, and is provided so as to sandwich the capacitor element in the direction D1 perpendicular to the direction D1 in which the anode lead extends. ..
- the second extending portion suppresses the misalignment of the capacitor element. From the above, the two cathode anchor portions can have both a role of positioning the capacitor element and a role of suppressing the cathode terminal portion from separating from the exterior resin.
- the size of the cathode anchor portion is not particularly limited, and may be any size as long as the anchor effect can be obtained.
- the two cathode anchors included in one cathode lead terminal (L) are usually perpendicular to the bottom surface (B) and symmetrical with respect to the plane passing through the central axis of the anode lead, but not symmetrically. You may.
- the cathode lead terminal may include a cathode connection portion extending from the cathode terminal portion and embedded in the exterior resin.
- the cathode connection portion is electrically connected to the cathode portion of the capacitor element.
- the cathode connecting portion may be in contact with the bottom surface of the capacitor element via the conductive adhesive layer, and the second extending portion may be in contact with the side surface of the capacitor element via the conductive adhesive layer.
- ESR equivalent series resistance
- the second extending portion may be in direct contact with the side surface of the capacitor element without providing the conductive adhesive layer, and the second extending portion may be in direct contact with the side surface of the capacitor element. It may be in contact with the side surface of the capacitor element via the exterior resin.
- the entire surface of the cathode extending portion (excluding the region in contact with the conductive adhesive layer when the second extending portion is in contact with the side surface of the capacitor element via the conductive adhesive layer). Is in contact with the exterior resin. From another point of view, in the electrolytic capacitor of the present disclosure, it is preferable that the cathode anchor portion is not in contact with the capacitor element. In this case, a high anchor effect can be easily obtained for the cathode lead terminal.
- the anode lead terminal may include an anode terminal portion having an exposed surface exposed on the bottom surface (B). It is preferable that the anode lead terminal includes an anode connection portion extending from the anode terminal portion and embedded in the exterior resin, and the anode connection portion is electrically connected to the anode lead. It is preferable that the anode connection portion rises from the anode terminal portion toward the upper surface and has a groove at the upper end thereof for receiving the tip of the anode lead. In this case, the capacitor element can be positioned by using the groove of the anode connection portion together with the second extending portion of the two cathode anchor portions.
- Capacitor element can be positioned. Both sides of the capacitor element are sandwiched between two second extending portions in the region of the end on the cathode anchor portion side opposite to the tip of the anode lead (above the cathode terminal portion), whereby the above three points are obtained. Positioning is done effectively. As a result, the accuracy of positioning of the capacitor element is greatly improved, and the effect of suppressing the displacement of the capacitor element can be remarkably obtained.
- the anchor effect unlike the cathode anchor portion cannot be obtained. It is not possible to prevent the cathode terminal portion from separating from the exterior resin.
- the second extending portion is located on the side farther from the tip of the anode lead than the above-mentioned side wall, and the positioning of the capacitor element by the above-mentioned three points can be more effectively performed.
- the anode lead terminal may include two anode anchor portions. That is, the anode lead terminal may include an anode terminal portion having an exposed surface exposed on the bottom surface (B), or may include two anode anchor portions extending from the anode terminal portion and embedded in the exterior resin. good.
- the anode terminal portion has two ends along the direction in which the anode lead extends, and the two anode anchor portions have an anode upright portion that rises from the end edge of the anode terminal portion toward the upper surface (T), respectively. It may include an anode extending portion that bends and extends from the upper end of the anode standing portion. A high anchor effect is obtained by the anode anchor portion, and the anode terminal portion is prevented from being separated from the exterior resin.
- the two anode anchor portions may be bent in different directions (reverse rotation directions) at the boundary between the anode terminal portion and the anode upright portion and the boundary between the anode upright portion and the anode extension portion, respectively.
- bending in different directions means that the metal sheet constituting the anode lead terminal has a valley on one surface (the surface on the upper surface (T) side) of the metal sheet at the boundary between the anode terminal portion and the anode upright portion. It is bent, and means that the one surface is bent so as to form a mountain at the boundary between the anode standing portion and the anode extending portion.
- the anode extending portions of the two anode anchor portions may each bend from the upper end of the anode standing portion and extend in a direction away from each other. That is, the anode extending portions of the two anode anchor portions may each bend from the upper end of the anode upright portion and extend in a direction away from each other in a direction perpendicular to the direction in which the anode lead extends.
- the anchor portion of this configuration is easy to form. Further, when the anchor portion having this configuration is used, it is easy to fill the material of the exterior resin (mold resin or the like).
- the two anode anchor portions may be bent in the same direction (same rotation direction) at the boundary between the anode terminal portion and the anode standing portion and the boundary between the anode standing portion and the anode extending portion, respectively. ..
- the entire surface of the extending anode portion is in contact with the exterior resin.
- a high anchor effect can be easily obtained for the anode lead terminal.
- the size of the anode anchor portion is not particularly limited, and may be any size as long as the anchor effect can be obtained.
- the two anode anchors included in one anode lead terminal are usually perpendicular to the bottom surface (B) and symmetrical with respect to the plane passing through the central axis of the anode lead, but may not be symmetrical. ..
- the anode lead terminal may be formed by processing one metal sheet by a known metal processing method.
- the material of the anode lead terminal may be any material that can be used as the material of the anode lead terminal of the electrolytic capacitor.
- a known material for the anode lead terminal used in the electrolytic capacitor may be used.
- the anode lead terminal may be formed by processing a metal sheet (including a metal plate and a metal foil) made of a metal (copper, copper alloy, etc.).
- the surface of the metal sheet may be plated with nickel plating, gold plating, or the like.
- the thickness of the metal sheet constituting the anode lead terminal may be in the range of 25 ⁇ m to 200 ⁇ m (for example, in the range of 25 ⁇ m to 100 ⁇ m).
- the anode lead terminals include an anode terminal portion exposed on the bottom surface (B) and an anode connection portion (hereinafter, also referred to as a wire connection portion) rising from the anode terminal portion toward the top surface (T). May include.
- two anchor portions may extend from the anode terminal portion.
- the anode lead of the capacitor element is connected to the wire connection portion.
- the wire connecting portion may have a wire receiving portion bent so as to be substantially parallel to the bottom surface (B) at its tip.
- the wire receiving portion may be bent toward the front surface of the capacitor element, or may be bent in the opposite direction.
- the front surface of the capacitor element is a surface facing the end surface of the capacitor element from which the wire protrudes.
- the wire receiving portion enables reliable and easy connection between the wire connecting portion and the anode lead.
- the cathode lead terminal may be formed by processing one metal sheet by a known metal processing method.
- the material of the cathode lead terminal may be any material that can be used as the material of the cathode lead terminal of the electrolytic capacitor.
- a known cathode lead terminal material used for an electrolytic capacitor may be used.
- the cathode lead terminal may be formed of a metal sheet exemplified as the material of the anode lead terminal.
- the capacitor element is not particularly limited.
- As the capacitor element a capacitor element used in a known solid electrolytic capacitor or a capacitor element having a similar configuration may be used.
- the electrolytic capacitor of the present disclosure may include a plurality of capacitor elements. In that case, the anode portions of the plurality of capacitors are electrically connected to the anode lead terminals.
- An example capacitor element includes an anode part and a cathode part.
- the anode portion includes an anode body having a dielectric layer formed on the surface thereof and an anode lead
- the cathode portion includes an electrolyte layer and a cathode layer.
- the electrolyte layer is arranged between the dielectric layer formed on the surface of the anode and the cathode layer.
- anode body for example, a columnar (for example, rectangular parallelepiped) porous sintered body obtained by sintering particles as a material may be used.
- the above-mentioned particles include particles of a valve-acting metal, particles of an alloy containing a valve-acting metal, and particles of a compound containing a valve-acting metal. Only one kind of these particles may be used, or two or more kinds of these particles may be mixed and used.
- the valve acting metal titanium (Ti), tantalum (Ta), niobium (Nb) and the like are used.
- the anode may be formed by roughening the surface of a base material (such as a foil-shaped or plate-shaped base material) containing a valve acting metal by etching or the like.
- the anode part may be manufactured by the following method. First, a part of the anode reed is embedded in the metal powder which is the material of the anode body, and the metal powder is pressure-molded into a columnar shape (for example, a rectangular parallelepiped shape). Then, the anode body is formed by sintering the powder of the metal. In this way, an anode portion including an anode body and an anode lead partially embedded in the anode body can be manufactured.
- the dielectric layer formed on the surface of the anode is not particularly limited, and may be formed by a known method.
- the dielectric layer may be formed by immersing the anode body in the chemical conversion liquid and anodizing the surface of the anode body.
- the dielectric layer may be formed by heating the anode body in an atmosphere containing oxygen to oxidize the surface of the anode body.
- the anode lead may be a wire made of metal (anode wire). Examples of materials for the anode reed include the valve acting metals, copper, aluminum, aluminum alloys and the like described above. A part of the anode lead is embedded in the anode body, and the rest protrudes from the anode body.
- the anode lead is usually rod-shaped, but may be plate-shaped.
- the electrolyte layer is not particularly limited, and an electrolyte layer used in a known solid electrolytic capacitor may be applied.
- the electrolyte layer may be read as a solid electrolyte layer, and the electrolytic capacitor may be read as a solid electrolytic capacitor.
- the electrolyte layer may be a laminate of two or more different electrolyte layers.
- the electrolyte layer is arranged so as to cover at least a part of the dielectric layer.
- the electrolyte layer may be formed by using a manganese compound or a conductive polymer.
- conductive polymers include polypyrrole, polythiophene, polyaniline, and derivatives thereof. These may be used alone or in combination of a plurality of types. Further, the conductive polymer may be a copolymer of two or more kinds of monomers.
- the derivative of the conductive polymer means a polymer having a conductive polymer as a basic skeleton.
- examples of derivatives of polythiophene include poly (3,4-ethylenedioxythiophene) and the like.
- Dopants may be added to the conductive polymer.
- the dopant can be selected according to the conductive polymer, and a known dopant may be used.
- Examples of dopants include naphthalene sulfonic acid, p-toluenesulfonic acid, polystyrene sulfonic acid, and salts thereof.
- An example electrolyte layer is formed using polystyrene sulfonic acid (PSS) -doped poly (3,4-ethylenedioxythiophene) (PEDOT).
- the electrolyte layer containing the conductive polymer may be formed by polymerizing the raw material monomer on the dielectric layer. Alternatively, it may be formed by applying a liquid containing a conductive polymer (and a dopant if necessary) to the dielectric layer and then drying it.
- the cathode layer may be a conductive layer formed on the electrolyte layer, or may be, for example, a conductive layer formed so as to cover the electrolyte layer.
- the cathode layer may include a carbon layer formed on the electrolyte layer and a metal paste layer formed on the carbon layer.
- the carbon layer may be formed of a conductive carbon material such as graphite and a resin.
- the metal paste layer may be formed of metal particles (for example, silver particles) and a resin, or may be formed of, for example, silver paste.
- the cathode layer is electrically connected to the cathode lead terminal.
- the cathode layer may be electrically connected to the cathode lead terminal via a conductive member.
- the conductive member may be formed of metal particles (for example, silver particles) and a resin, or may be formed of, for example, silver paste.
- the exterior resin is arranged around the capacitor element so that the capacitor element is not exposed on the surface of the electrolytic capacitor. Further, the exterior resin insulates the anode lead terminal and the cathode lead terminal.
- a known exterior resin used for an electrolytic capacitor may be applied to the exterior resin.
- the exterior resin may be formed by using an insulating resin material used for sealing the capacitor element. Examples of exterior resin materials include epoxy resins, phenolic resins, silicone resins, melamine resins, urea resins, alkyd resins, polyurethanes, polyimides, unsaturated polyesters and the like.
- the exterior resin may contain a substance other than the resin (such as an inorganic filler).
- FIG. 3 shows a cross-sectional view of the anchor portion of the anode lead terminal 120.
- FIG. 4 shows a cross-sectional view of the anchor portion of the cathode lead terminal 130.
- FIGS. 3 and 4 for easy understanding, the position of the capacitor element 110 is shown by a dotted line, and the outline of the exterior resin 101 is shown by a solid line.
- the bottom view of the electrolytic capacitor 100 shown in FIG. 1 is schematically shown in FIG. In FIG. 5, the portion embedded in the exterior resin 101 is shown by a dotted line.
- FIG. 6 a cross-sectional view of the electrolytic capacitor 100 shown in FIG. 1 is schematically shown in FIG.
- the cross-sectional view of FIG. 6 is a cross-sectional view that passes through the central axis of the anode lead (anode wire) 112.
- the exterior resin 101 is shown only by the outline represented by the dotted line.
- the electrolytic capacitor 100 has a bottom surface 100b and a top surface 100t on the opposite side of the bottom surface 100b.
- the electrolytic capacitor 100 includes a capacitor element 110, an anode lead terminal 120, a cathode lead terminal 130, a conductive member 141, and an exterior resin 101.
- the anode lead terminal 120 and the cathode lead terminal 130 are each electrically connected to the capacitor element 110.
- the anode lead terminal 120 and the cathode lead terminal 130 are made of a metal sheet.
- the anode lead terminal 120 includes an anode terminal portion 121, a wire connection portion 122, and two anchor portions 123.
- a part of the anode terminal portion 121 in the thickness direction is exposed on the bottom surface 100b, and the anode terminal portion 121 has a first main surface SP1 (exposed surface) exposed on the bottom surface 100b.
- the second main surface SP2 on the opposite side of the first main surface PS1 of the anode terminal portion 121 is in contact with the exterior resin 101.
- the wire connection portion 122 rises from the anode terminal portion 121 toward the upper surface 100t.
- the groove portion of the wire connecting portion 122 for receiving the tip of the anode lead 112 is formed by resistance welding the anode lead 112 and the wire connecting portion 122.
- the anode lead 112 and the wire connecting portion 122 may be connected by welding, soldering, or the like.
- the two anode anchor portions 123 extend from the two end sides 121e, respectively.
- the two end sides 121e are the ends of the anode terminal portion 121, and are a pair of end sides along the direction (D1) in which the anode lead 112 extends.
- each of the two anode anchor portions 123 includes an upright portion 123a that rises from the end side 121e toward the upper surface 100t, and an extension portion 123b that bends and extends from the upper end of the upright portion 123a. ..
- the two anode anchor portions 123 are bent in different directions at the boundary between the anode terminal portion 121 and the upright portion 123a and at the boundary between the upright portion 123a and the extending portion 123b, respectively.
- one surface (the surface on the upper surface 100t side) of the metal sheet constituting the anode lead terminal 120 is valley-folded at the boundary between the anode terminal portion 121 and the upright portion 123a, and is formed with the upright portion 123a. It is a mountain fold at the boundary with the extending portion 123b.
- the extending portion 123b extends from the upper end of the standing portion 123a toward the outside of the electrolytic capacitor 100. That is, each of the extending portions 123b of the two anchor portions 123 bends from the upper end of the upright portion 123a and extends in a direction away from each other in a direction (D2) perpendicular to the direction (D1) in which the anode lead 112 extends.
- the direction in which the extending portion 123b extends is substantially parallel to the bottom surface 100b, and for example, the angle formed by the two may be in the range of ⁇ 20 ° to 20 °.
- the cathode lead terminal 130 includes a cathode terminal portion 131, a cathode connection portion 132, and two cathode anchor portions 133.
- a part of the cathode terminal portion 131 in the thickness direction is exposed on the bottom surface 100b, and the cathode terminal portion 131 has a first main surface SN1 (exposed surface) exposed on the bottom surface 100b.
- the second main surface SN2 on the side opposite to the first main surface SN1 of the cathode terminal portion 131 is in contact with the exterior resin 101.
- the cathode connection portion 132 is arranged so as to have a step with the cathode terminal portion 131, is located slightly closer to the upper surface 100t side from the cathode terminal portion 131, and has a bottom surface 100b. Is covered with the exterior resin 101.
- the cathode along the bottom surface 100b from one end of the cathode terminal portion 131 (the end connected to the two end sides 131e described later) along the direction (D2) perpendicular to the direction (D1) in which the anode lead 112 extends.
- the connection portion 132 is arranged.
- the cathode connecting portion 132 is electrically connected to the cathode portion 115 (cathode layer 117) described later via the conductive member 141 (conductive adhesive layer). That is, the cathode terminal portion 131 is electrically connected to the capacitor element 110 via the cathode connecting portion 132 and the conductive member 141.
- the conductive member 141 is not particularly limited, and a known conductive member may be used.
- the conductive member 141 may be formed of a metal paste or the like.
- the two cathode anchor portions 133 each extend from the two end sides 131e.
- the two end sides 131e are the ends of the cathode terminal portion 131, and are a pair of end sides along the direction (D1) in which the anode lead 112 extends.
- the two cathode anchor portions 133 have an upright portion 133a rising from the end side 131e toward the upper surface 100t, a first extending portion 133b extending from the upright portion 133a, and a first portion, respectively. It includes a second extending portion 133c extending from the extending portion 133b.
- the first extending portion 133b of the two cathode anchor portions 133 is bent from the upper end of the standing portion 133a and extends in a direction away from each other.
- the two cathode anchor portions 133 are bent in different directions at the boundary between the cathode terminal portion 131 and the upright portion 133a and at the boundary between the upright portion 133a and the first extending portion 133b, respectively. That is, the first extending portions 133b of the two cathode anchor portions 133 are bent from the upper end of the upright portion 133a, respectively, and are oriented toward each other in a direction (D2) perpendicular to the direction (D1) in which the anode lead 112 extends. Extends to.
- the direction in which the first extending portion 133b extends is substantially parallel to the bottom surface 100b, and for example, the angle formed by the two may be in the range of ⁇ 20 ° to 20 °.
- the second extending portion 133c of the two cathode anchor portions 133 rises toward the upper surface 100t, respectively, and the direction in which the anode lead 112 extends. It is provided so as to sandwich the capacitor element 110 in the direction (D2) perpendicular to (D1). Both side surfaces 110a of the capacitor element 110 are sandwiched above the cathode terminal portion 131 by the two second extending portions 133c.
- the direction in which the second extending portion 133c extends is substantially parallel to the direction perpendicular to the bottom surface 100b, and for example, the angle formed by the two may be in the range of ⁇ 20 ° to 20 °.
- the second extending portion 133c may be provided, for example, so that the upper end thereof reaches a height corresponding to 10% to 60% of the height dimension of the capacitor element 110.
- the width of the second extending portion 133c has, for example, a dimension corresponding to 5% to 20% of the height dimension of the capacitor element 110.
- the distance L1 from the surface of the anode terminal portion 121 to the lower surface of the extending portion 123b may be 50 ⁇ m or more (for example, 75 ⁇ m or more or 100 ⁇ m or more).
- the distance L1 By setting the distance L1 to 50 ⁇ m or more (for example, 75 ⁇ m or more or 100 ⁇ m or more), it becomes easy to fill the lower portion of the extending portion 123b with the exterior resin 101.
- the upper surface of the extending portion 123b is located below the lower surface of the capacitor element 110, but the extending portion 123b is located at a higher position unless the extending portion 123b interferes with the capacitor element 110. You may.
- the distance L3 from the surface of the cathode terminal portion 131 to the lower surface of the first extending portion 133b may be 50 ⁇ m or more (for example, 75 ⁇ m or more or 100 ⁇ m or more), and is in the range of 50 ⁇ m to 500 ⁇ m (for example, 75 ⁇ m or more or 100 ⁇ m or more). For example, it may be in the range of 75 ⁇ m to 200 ⁇ m).
- the distance L4 from the upper surface of the first extending portion 133b to the lower surface of the capacitor element 110 may be 50 ⁇ m or more (for example, 75 ⁇ m or more or 100 ⁇ m or more), and may be in the range of 50 ⁇ m to 500 ⁇ m (for example, the range of 75 ⁇ m to 200 ⁇ m). There may be.
- the distance L3 and the distance L4 to 50 ⁇ m or more (for example, 75 ⁇ m or more or 100 ⁇ m or more), it becomes easy to fill the lower portion and the upper portion of the first extending portion 133b with the exterior resin 101.
- the distance L2 between the second extending portion 133c and the side surface 110a of the capacitor element may be, for example, 80 ⁇ m or more, or may be in the range of 80 ⁇ m to 350 ⁇ m.
- the distance L2 is in the above range, it is easy to suppress the positional deviation of the capacitor element, and it is easy to arrange the capacitor element between the two second extending portions.
- the second extending portion and the capacitor element are electrically connected via the conductive adhesive layer, it is easy to provide the conductive adhesive layer.
- the horizontal distance W1 (distance along the direction D2) from the end side 121e to the tip of the extending portion 123b may be 50 ⁇ m or more (for example, 75 ⁇ m or more or 100 ⁇ m or more). By setting the horizontal distance W1 in this range, a high anchor effect can be obtained. Further, from the viewpoint of shape stability and workability, the horizontal distance W1 may be set to 200 ⁇ m or more. The horizontal distance from the end side 131e of the first extending portion 133b to the end on the second extending portion 133c side may be larger than the horizontal distance W1.
- the shapes of the anode lead terminal 120 and the cathode lead terminal 130 described above are examples, and are not limited to the above shapes.
- the anode lead terminal 120 may not include an anchor portion.
- the connecting portion of the cathode lead terminal 130 may not be at the position shown in the figure or may not have the shape shown in the figure as long as it is electrically connected to the cathode portion 115 (cathode layer 117).
- the second extending portion 133c may be electrically connected to the cathode portion 115 (cathode layer 117) described later.
- the second extending portion 133c may be in contact with the side surface 110a of the capacitor element 110 via the conductive adhesive layer.
- the capacitor element 110 includes an anode portion 111 and a cathode portion 115.
- the anode portion 111 includes an anode body 113 having a dielectric layer 114 formed on its surface, and an anode lead 112.
- the cathode portion 115 includes an electrolyte layer 116 arranged so as to cover the dielectric layer 114, and a cathode layer 117.
- the cathode layer 117 includes, for example, a carbon layer formed on the electrolyte layer 116 and a metal particle layer formed on the carbon layer.
- the metal particle layer is, for example, a layer formed by using a metal paste.
- the anode portion 111 of the capacitor element 110 is electrically connected to the anode lead terminal 120, and the cathode portion 115 of the capacitor element 110 is electrically connected to the cathode lead terminal 130.
- the electrolytic capacitor 100 When the electrolytic capacitor 100 is mounted on a substrate or the like of an electronic device, it may be mounted by soldering the anode terminal portion 121 and the cathode terminal portion 131, respectively.
- the capacitor element 110, the anode lead terminal 120, and the cathode lead terminal 130 are prepared.
- the method for manufacturing the capacitor element 110 is not particularly limited, and the capacitor element 110 can be manufactured by a known method.
- the anode lead terminal 120 and the cathode lead terminal 130 can be formed by a known metal processing method.
- the anode lead 112 and the anode lead terminal 120 are connected, and the cathode layer 117 and the cathode lead terminal 130 are connected.
- the anode lead 112 and the anode lead terminal 120 can be connected by welding (for example, laser welding) or the like.
- the cathode layer 117 and the cathode lead terminal 130 can be connected by, for example, the following method. First, a metal paste to be a conductive member 141 is applied to the surface of the cathode connection portion 132 of the cathode lead terminal 130 and / or the surface of the cathode layer 117.
- the cathode layer 117 and the cathode connecting portion 132 are adhered to each other via a metal paste, and the metal paste is cured to form a conductive member 141.
- the cathode layer 117 and the cathode lead terminal 130 can be connected.
- the second extending portion 133c and the side surface 110a of the capacitor element may be adhered to each other by using a metal paste.
- the capacitor element is sealed with the material of the exterior resin 101 (for example, mold resin).
- the sealing step can be carried out by a known method.
- the electrolytic capacitor 100 can be manufactured.
- the other electrolytic capacitors disclosed in the present disclosure can also be manufactured by the same manufacturing method.
- This disclosure can be used for electrolytic capacitors that require high reliability.
- Electrolytic capacitor 100b Bottom surface 100t: Top surface 101: Exterior resin 110: Capacitor element 110a: Side surface 112: Anode lead 120: Anode lead terminal 121: Anode terminal portion 121e: End side 122: Wire connection portion 123: Anchor portion 123a: Standing part 123b: Extension part 130: Cathode lead terminal 131: Cathode terminal part 131e: End side 132: Cathode connection part 133: Anchor part 133a: Standing part 133b: First extending part 133c: Second extending part D1, D2: Direction
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
本開示の電解コンデンサは、底面と、底面とは反対側の上面とを有する。当該底面および上面を、以下では、「底面(B)」および「上面(T)」と称する場合がある。本開示の電解コンデンサは、陽極リードを含むコンデンサ素子と、コンデンサ素子に電気的に接続された陽極リード端子および陰極リード端子と、コンデンサ素子の周囲に配置された外装樹脂と、を含む。
陽極リード端子は、1枚の金属シートを公知の金属加工法で加工することによって形成してもよい。陽極リード端子の材料は、電解コンデンサの陽極リード端子の材料として使用できるものであればよい。例えば、電解コンデンサに用いられている公知の陽極リード端子の材料を用いてもよい。陽極リード端子は、金属(銅、銅合金など)からなる金属シート(金属板および金属箔を含む)を加工することによって形成してもよい。当該金属シートの表面には、ニッケルメッキや金メッキなどのメッキが施されていてもよい。陽極リード端子を構成する金属シートの厚さは、25μm~200μmの範囲(例えば25μm~100μmの範囲)にあってもよい。
陰極リード端子は、1枚の金属シートを公知の金属加工法で加工することによって形成してもよい。陰極リード端子の材料は、電解コンデンサの陰極リード端子の材料として使用できるものであればよい。例えば、電解コンデンサに用いられている公知の陰極リード端子の材料を用いてもよい。陰極リード端子は、陽極リード端子の材料として例示した金属シートで形成してもよい。
コンデンサ素子に特に限定はない。コンデンサ素子には、公知の固体電解コンデンサに用いられているコンデンサ素子またはそれと同様の構成を有するコンデンサ素子を用いてもよい。なお、本開示の電解コンデンサは、複数のコンデンサ素子を含んでもよい。その場合、複数のコンデンサの陽極部が陽極リード端子に電気的に接続される。
陽極体には、例えば、材料となる粒子を焼結して得られる柱状(例えば直方体状)の多孔質焼結体を用いてもよい。上記粒子の例には、弁作用金属の粒子、弁作用金属を含有する合金の粒子、および弁作用金属を含有する化合物の粒子が含まれる。これらの粒子は、1種のみを用いてもよいし、2種以上を混合して用いてもよい。弁作用金属としては、チタン(Ti)、タンタル(Ta)、ニオブ(Nb)などが用いられる。あるいは、陽極体は、弁作用金属を含む基材(箔状または板状の基材など)の表面をエッチングなどによって粗面化することによって形成してもよい。
陽極リードは、金属からなるワイヤ(陽極ワイヤ)であってもよい。陽極リードの材料の例には、上記の弁作用金属、銅、アルミニウム、アルミニウム合金などが含まれる。陽極リードの一部は陽極体に埋設され、残りの部分は陽極体から突出している。なお、陽極リードは、通常は棒状であるが、板状であってもよい。
電解質層に特に限定はなく、公知の固体電解コンデンサに用いられている電解質層を適用してもよい。なお、この明細書において、電解質層を固体電解質層に読み替えてもよく、電解コンデンサを固体電解コンデンサに読み替えてもよい。電解質層は、2層以上の異なる電解質層の積層体であってもよい。
陰極層は、電解質層上に形成された導電層であってもよく、例えば、電解質層を覆うように形成された導電層であってもよい。陰極層は、電解質層上に形成されたカーボン層と、カーボン層上に形成された金属ペースト層とを含んでもよい。カーボン層は、黒鉛等の導電性炭素材料と樹脂とによって形成されてもよい。金属ペースト層は、金属粒子(例えば銀粒子)と樹脂とによって形成されてもよく、例えば銀ペーストによって形成されてもよい。
外装樹脂は、電解コンデンサの表面にコンデンサ素子が露出しないように、コンデンサ素子の周囲に配置される。さらに、外装樹脂は、陽極リード端子と陰極リード端子とを絶縁する。外装樹脂には、電解コンデンサに用いられる公知の外装樹脂を適用してもよい。例えば、外装樹脂は、コンデンサ素子の封止に用いられる絶縁性の樹脂材料を用いて形成してもよい。外装樹脂の材料の例には、エポキシ樹脂、フェノール樹脂、シリコーン樹脂、メラミン樹脂、尿素樹脂、アルキド樹脂、ポリウレタン、ポリイミド、および不飽和ポリエステルなどが含まれる。外装樹脂は、樹脂以外の物質(無機フィラーなど)を含んでもよい。
100b:底面
100t:上面
101:外装樹脂
110:コンデンサ素子
110a:側面
112:陽極リード
120:陽極リード端子
121:陽極端子部
121e:端辺
122:ワイヤ接続部
123:アンカー部
123a:起立部
123b:延在部
130:陰極リード端子
131:陰極端子部
131e:端辺
132:陰極接続部
133:アンカー部
133a:起立部
133b:第1延在部
133c:第2延在部
D1、D2:方向
Claims (9)
- 底面と前記底面とは反対側の上面とを有する電解コンデンサであって、
陽極リードを含むコンデンサ素子と、
前記コンデンサ素子に電気的に接続された陽極リード端子および陰極リード端子と、
前記コンデンサ素子の周囲に配置された外装樹脂と、を含み、
前記陰極リード端子は、前記底面において露出している露出面を有する陰極端子部と、前記陰極端子部から延びて前記外装樹脂に埋設されている2つの陰極アンカー部とを含み、
前記陰極端子部は、前記陽極リードが延びる方向に沿った2つの端辺を有し、
前記2つの陰極アンカー部は、それぞれ、前記陰極端子部の前記端辺から前記上面に向かって立ち上がる陰極起立部と、前記陰極起立部から延びる第1延在部と、前記第1延在部から延びる第2延在部とを含み、
前記2つの陰極アンカー部の前記第1延在部は、それぞれ、前記陰極起立部の上端から折れ曲がって、互いに遠ざかる向きに延びており、
前記2つの陰極アンカー部の前記第2延在部は、それぞれ、前記上面に向かって立ち上がっており、かつ、前記陽極リードが延びる方向と垂直な方向で前記コンデンサ素子を挟むように設けられている、電解コンデンサ。 - 前記第1延在部の表面のすべてが、前記外装樹脂に接している、請求項1に記載の電解コンデンサ。
- 前記陰極端子部の表面における前記露出面の裏側の領域が、前記外装樹脂に接している、請求項1または2に記載の電解コンデンサ。
- 前記陰極リード端子は、前記陰極端子部から延びて前記外装樹脂に埋設されている陰極接続部を含み、
前記陰極接続部は、導電性接着層を介して前記コンデンサ素子の底面と接しており、
前記第2延在部は、導電性接着層を介して前記コンデンサ素子の側面と接している、請求項1~3のいずれか1項に記載の電解コンデンサ。 - 前記第2延在部の表面は、前記導電性接着層と接する領域を除くすべての領域において、前記外装樹脂に接している、請求項4に記載の電解コンデンサ。
- 前記陽極リード端子は、前記底面において露出している露出面を有する陽極端子部と、前記陽極端子部から延びて前記外装樹脂に埋設されている陽極接続部とを含み、
前記陽極接続部は、前記陽極リードと電気的に接続されている、請求項1~5のいずれか1項に記載の電解コンデンサ。 - 前記陽極接続部は、前記陽極端子部から前記上面に向かって立ち上がっており、その上端に前記陽極リードの先端を受ける溝を有する、請求項6に記載の電解コンデンサ。
- 前記陽極端子部は、前記陽極端子部から延びて前記外装樹脂に埋設されている2つの陽極アンカー部とを含み、
前記陽極端子部は、前記陽極リードが延びる方向に沿った2つの端辺を有し、
前記2つの陽極アンカー部は、それぞれ、前記陽極端子部の前記端辺から前記上面に向かって立ち上がる陽極起立部と、前記起立部の上端から折れ曲がって延びる陽極延在部とを含む、請求項6または7に記載の電解コンデンサ。 - 前記陽極延在部の表面のすべてが、前記外装樹脂に接している、請求項8に記載の電解コンデンサ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022571444A JPWO2022138556A1 (ja) | 2020-12-25 | 2021-12-20 | |
US18/254,152 US20240006128A1 (en) | 2020-12-25 | 2021-12-20 | Electrolytic capacitor |
CN202180085893.2A CN116635964A (zh) | 2020-12-25 | 2021-12-20 | 电解电容器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020-217858 | 2020-12-25 | ||
JP2020217858 | 2020-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022138556A1 true WO2022138556A1 (ja) | 2022-06-30 |
Family
ID=82157936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/047002 WO2022138556A1 (ja) | 2020-12-25 | 2021-12-20 | 電解コンデンサ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240006128A1 (ja) |
JP (1) | JPWO2022138556A1 (ja) |
CN (1) | CN116635964A (ja) |
WO (1) | WO2022138556A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001110676A (ja) * | 1999-10-05 | 2001-04-20 | Matsuo Electric Co Ltd | チップコンデンサ |
JP2002261225A (ja) * | 2001-03-06 | 2002-09-13 | Sanyo Electric Co Ltd | 樹脂封止型半導体装置 |
JP2006270014A (ja) * | 2004-10-15 | 2006-10-05 | Matsushita Electric Ind Co Ltd | 固体電解コンデンサ及びその製造方法とこれを用いたデジタル信号処理基板 |
JP2008198718A (ja) * | 2007-02-09 | 2008-08-28 | Asmo Co Ltd | 樹脂封止型半導体装置 |
JP2009141208A (ja) * | 2007-12-07 | 2009-06-25 | Sanyo Electric Co Ltd | 固体電解コンデンサ |
JP2019067923A (ja) * | 2017-09-29 | 2019-04-25 | パナソニックIpマネジメント株式会社 | 固体電解コンデンサおよびその製造方法 |
-
2021
- 2021-12-20 JP JP2022571444A patent/JPWO2022138556A1/ja active Pending
- 2021-12-20 CN CN202180085893.2A patent/CN116635964A/zh active Pending
- 2021-12-20 WO PCT/JP2021/047002 patent/WO2022138556A1/ja active Application Filing
- 2021-12-20 US US18/254,152 patent/US20240006128A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001110676A (ja) * | 1999-10-05 | 2001-04-20 | Matsuo Electric Co Ltd | チップコンデンサ |
JP2002261225A (ja) * | 2001-03-06 | 2002-09-13 | Sanyo Electric Co Ltd | 樹脂封止型半導体装置 |
JP2006270014A (ja) * | 2004-10-15 | 2006-10-05 | Matsushita Electric Ind Co Ltd | 固体電解コンデンサ及びその製造方法とこれを用いたデジタル信号処理基板 |
JP2008198718A (ja) * | 2007-02-09 | 2008-08-28 | Asmo Co Ltd | 樹脂封止型半導体装置 |
JP2009141208A (ja) * | 2007-12-07 | 2009-06-25 | Sanyo Electric Co Ltd | 固体電解コンデンサ |
JP2019067923A (ja) * | 2017-09-29 | 2019-04-25 | パナソニックIpマネジメント株式会社 | 固体電解コンデンサおよびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN116635964A (zh) | 2023-08-22 |
JPWO2022138556A1 (ja) | 2022-06-30 |
US20240006128A1 (en) | 2024-01-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101176172B (zh) | 层叠型固体电解电容器及其制造方法 | |
JP5466722B2 (ja) | 固体電解コンデンサ | |
KR100623804B1 (ko) | 고체 전해질 캐패시터 및 그 제조방법 | |
JP2007081069A (ja) | チップ型固体電解コンデンサおよび端子ならびに端子の製造方法 | |
US20220399169A1 (en) | Electrolytic capacitor | |
TWI400733B (zh) | 固態電解電容器 | |
WO2022138556A1 (ja) | 電解コンデンサ | |
JPWO2021193328A5 (ja) | ||
WO2022138223A1 (ja) | 電解コンデンサ | |
JP2019153631A (ja) | 電解コンデンサ | |
JP2006190925A (ja) | 固体電解コンデンサ及びその製造方法 | |
WO2021193327A1 (ja) | 電解コンデンサ | |
JP2007013043A (ja) | 電子素子搭載用電極アセンブリ及びこれを用いた電子部品、並びに固体電解コンデンサ | |
JP2006032880A (ja) | 固体電解コンデンサ及びその製造方法 | |
JP5095107B2 (ja) | 固体電解コンデンサ | |
WO2021193866A1 (ja) | 電解コンデンサ | |
WO2024043279A1 (ja) | 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 | |
US20220319778A1 (en) | Electrolytic capacitor | |
JP5164213B2 (ja) | 固体電解コンデンサ | |
JP7496517B2 (ja) | 電解コンデンサおよびその製造方法 | |
JP2867514B2 (ja) | チップ型固体電解コンデンサ | |
JP7213430B2 (ja) | 固体電解コンデンサおよびその製造方法 | |
CN116724370A (zh) | 电解电容器 | |
JP2022085762A (ja) | 電解コンデンサ | |
WO2023074376A1 (ja) | 固体電解コンデンサ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21910700 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18254152 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2022571444 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180085893.2 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21910700 Country of ref document: EP Kind code of ref document: A1 |