CN1723516A - Solid electrolytic capacitor - Google Patents
Solid electrolytic capacitor Download PDFInfo
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- CN1723516A CN1723516A CN 200380105673 CN200380105673A CN1723516A CN 1723516 A CN1723516 A CN 1723516A CN 200380105673 CN200380105673 CN 200380105673 CN 200380105673 A CN200380105673 A CN 200380105673A CN 1723516 A CN1723516 A CN 1723516A
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- dividing plate
- electrolytic capacitor
- solid electrolytic
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- decomposition temperature
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Abstract
A solid electrolytic capacitor is formed by rolling an anode foil and a cathode foil together with a separator interposed therebetween into a rolled device and forming a solid electrolyte layer within the rolled device. The electrical characteristics of the solid electrolytic capacitor can be improved by reducing the amount of the separator.
Description
Technical field
The present invention relates to solid electrolytic capacitor, relate to especially by making dividing plate make winding element, thereby in this winding element, form the solid electrolytic capacitor that solid electrolyte layer constitutes between middle coiling anode electrode paper tinsel and cathode electrode foil.
Background technology
Electrolytic capacitor comprises following formation: this surface at the anode electrode of the valve metals that comprises tantalum that the surface has minute aperture or etch pit, aluminium etc. becomes dielectric oxide film thereon layer, from this oxide film thereon layer extraction electrode.Undertaken by dielectric substrate from oxide film thereon layer extraction electrode with conductivity.Therefore, the role that dielectric substrate is undertaken real negative electrode in electrolytic capacitor.For such dielectric substrate that plays real cathode function, the adhesiveness of requirement and oxide film thereon layer, compactness, uniformity etc.Particularly cause big influence to electrical characteristics, proposed multiple dielectric substrate all the time with electrolytical adhesiveness in the inside of the minute aperture of anode electrode or etch pit.
In recent years, follow digitlization, the high frequencyization of electronic equipment, require small-sized big capacity, the low capacitor of the impedance under high frequency band.At these requirements, developed dividing plate will be accommodated in the metal-back between the winding element that middle coiling Cathode Foil and anode foils form, adopt the roll type electrolytic capacitor that seals rubber seal, make the small-sized and high capacity of the electrolytic capacitor possibility that becomes in view of the above.For low-impedance requirement, can tackle by using solid electrolyte as electrolyte, as such solid electrolyte, know manganese dioxide and 7,7,8,8-four cyano quinone bismethane (TCNQ) complex., these solid electrolyte conductivity are low, and it is sufficient using its not talkative impedance operator of electrolytic capacitor.
So,, proposed to use polypyrrole, polythiophene etc. to have the electroconductive polymer of high conductivity as solid electrolyte for tackling this problem.Recently, polymerization rate slowly and with the poly-Ethylenedioxy Thiophene (PEDT) of the adhesiveness excellence of the oxide film thereon floor of anode electrode is gazed at (opening flat 2-15611 communique with reference to the spy) as solid electrolyte, proposed: make winding element impregnation Ethylenedioxy Thiophene (EDT) monomer and oxidant that dividing plate is formed between middle coiling anode electrode paper tinsel and cathode electrode foil, the chemical polymerization that utilizes slow monomer that takes place and oxidant then is in the inner poly-Ethylenedioxy Thiophene that generates as solid electrolyte of winding element, the method (opening flat 10-340829 communique with reference to the spy) of making solid electrolytic capacitor thus.
, in winding element, form in the solid electrolytic capacitor of solid electrolyte layer, sometimes the reduction effect of using the ESR (equivalent series resistance) that electroconductive polymer brings as cathode material obtaining like that not by expectation in method according to above-mentioned proposition.
Summary of the invention
The present invention seeks to solve the problem as described above in the solid electrolytic capacitor, described solid electrolytic capacitor is made winding element by making dividing plate between middle coiling anode electrode paper tinsel and cathode electrode foil, constitutes thereby form solid electrolyte layer in this winding element.
The inventor achieves the above object and the diligent repeatedly result who discusses, this discovery, when the winding element that dividing plate will be formed between middle coiling anode electrode paper tinsel and cathode electrode foil, before forming solid electrolyte layer, impregnation process in solvent, with this dividing plate decrement, perhaps use the dividing plate that comprises at least 2 kinds of different constituents of heat decomposition temperature as dividing plate, and before forming solid electrolyte layer, with winding element be committed to dividing plate thermal decomposition process and during with this dividing plate decrement, obtain having the solid electrolytic capacitor of solid electrolyte layer maintenance dose highly, to such an extent as to finish the present invention.
Like this, the invention provides a kind of solid electrolytic capacitor, it is characterized in that, be by making dividing plate make winding element between middle coiling anode electrode paper tinsel and cathode electrode foil, thereby in this winding element, form the solid electrolytic capacitor that solid electrolyte layer constitutes, wherein (a) was immersed in this winding element in the solvent of a kind of composition among the constituent of solubilized dividing plate (below be called the solution of the present invention (a)) at least before forming this solid electrolyte layer, perhaps, (b) use the dividing plate that comprises at least 2 kinds of different constituents of heat decomposition temperature as dividing plate, and the temperature more than the heat decomposition temperature of the low heat decomposition temperature composition among the constituent that before this solid electrolyte layer of formation this winding element is heated to dividing plate, decompose to remove at least a portion (below be called the solution of the present invention (b)) of low heat decomposition temperature composition, thereby the dividing plate decrement is constituted.
Description of drawings
Fig. 1 is the exploded perspective view of the used winding element of the present invention.
Embodiment
Below be described in more detail solid electrolytic capacitor of the present invention.
Solid electrolytic capacitor of the present invention basically as shown in Figure 1, be by making dividing plate (3) form winding element (6) between middle coiling anode electrode paper tinsel (1) and cathode electrode foil (2), and make the dividing plate (3) of this winding element (6) thus keep solid electrolyte to constitute.Anode electrode paper tinsel (1) comprises valve metals such as aluminium, tantalum, corrosion treatment is implemented on surface at anode electrode paper tinsel (1) usually in advance, and enlarged surface is long-pending, again by changing into processing, for example, form as dielectric oxide film thereon layer by applied voltage in the aqueous solution such as ammonium borate.On the other hand, cathode electrode foil (2) comprises metals such as aluminium equally with anode electrode paper tinsel (1), implements corrosion treatment usually on its surface.
Go up anode ejector (4) and the negative electrode ejector (5) that is used for each electrode is connected to the outside by the connection of known method such as stitch, ultrasonic bonding at anode electrode paper tinsel (1) and cathode electrode foil (2).Derive from the end face of winding element (6) these electrode ejectors (4), (5).
Winding element (6) is usually by forming be clipped in the middle coiling anode electrode paper tinsel (1) and cathode electrode foil (2) of dividing plate (3).Size to the two poles of the earth electrode foil (1), (2) is not particularly limited, according to the decisions such as pattern of target solids electrolytic capacitor, so the size of dividing plate (3) also according to the size of the two poles of the earth electrode foil (1), (2) set for than big slightly wide size.
As the dividing plate (3) that in the solution of the present invention (a), uses, can similarly use the dividing plate that in the making of roll type solid electrolytic capacitor, always uses, constitute raw material as it, for example enumerate aromatic polyamides, polyester, polyphenylene sulfide, fluorine resin, PB I (polybenzimidazoles), PBO (polyparaphenylene benzo-dioxazole), polyimides, glass, polyacrylonitrile, oxidized polyacrylonitrile, carbon or its precursor, aluminium oxide, cellulose, starch, polyethylene, polypropylene, epoxy resin, nylon, polyvinyl alcohol etc., these materials use separately respectively or make up more than 2 kinds or 2 kinds and use.
The constituent material of these dividing plates all can become composition or the insoluble in fact on the contrary composition that is dissolved in this solvent according to the solvent types of using in solvent impregnated processing described later.
In the present invention, usually preferably use following dividing plate: this dividing plate comprise to the solvent soluble that in solvent impregnated processing described later, uses at least a kind constitute raw material and to this solvent in fact at least a kind of insolubility constitute raw-material combination.
Like this, as comprising the raw-material dividing plate of above-mentioned formation, specifically for example enumerate: the porous sheet (spy opens clear 63-273651 communique) that comprises the polyolefin polymer of polyethylene or polypropylene and so on, the nonwoven fabrics (spy opens the 2001-11761 communique) of fiber that comprises the polyolefin polymer of polyethylene or polypropylene and so on, the nonwoven fabrics (spy opens clear 58-147956 communique) that comprises nylon fiber, comprise the sheet material (the special 2001-325540 of hope specification) of the either party of aramid fibre and aromatic polyamides fine strip body or two sides' mixture etc., wherein, the sheet material that preferably adopts the wet type method of manufacturing paper with pulp to form by aramid fibre and aromatic polyamides fine strip body.
In addition, as the dividing plate (3) that in the solution of the present invention (b), uses, use the dividing plate that comprises at least 2 kinds of different relatively constituents of heat decomposition temperature.As low heat decomposition temperature composition, usually preferably at 200-500 ℃, the composition that decomposes of the temperature in 250-350 ℃ the scope particularly, in addition, as high heat decomposition temperature composition, usually preferably have, the particularly composition of high heat decomposition temperature 50 ℃ or more higher at least 10 ℃ than above-mentioned low heat decomposition temperature composition.
Here, so-called " heat decomposition temperature " is certain material to be applied the minimum temperature that this substance decomposition when hot is varied to the little material of quality, the temperature that begins to reduce as the quality of material when using TGA (thermogravimetry device) with certain programming rate heatable substance usually and measuring.
Like this, among the constituent of the dividing plate among the present invention, as high heat decomposition temperature composition, for example enumerate aromatic polyamides, polyester, polyphenylene sulfide, fluorine resin, PBI (polybenzimidazoles), PBO (polyparaphenylene benzo-dioxazole), polyimides, glass, polyacrylonitrile, oxidized polyacrylonitrile, carbon or its precursor, aluminium oxide etc., on the other hand, as low heat decomposition temperature composition, for example enumerate cellulose, starch, polyethylene, polypropylene, epoxy resin, nylon, polyvinyl alcohol, aromatic polyamides, polyester, polyphenylene sulfide, fluorine resin, PBI (polybenzimidazoles), PBO (polyparaphenylene benzo-dioxazole), polyimides etc., among these each group, the combinations of substances that can select to satisfy above-mentioned heat decomposition temperature difference condition is used.Wherein, the sheet material that especially preferably adopts the wet type method of manufacturing paper with pulp to form by aramid fibre and wood pulp (cellulose).
The not strict restriction of the composition of high heat decomposition temperature composition and low heat decomposition temperature composition, can be according to the kind of each composition and the variations such as porosity of the desirable dividing plate of winding element, but the weight ratio of usually high heat decomposition temperature composition/low heat decomposition temperature composition can be decided to be 1/99～99/1, be decided to be especially in 10/90～90/10 the scope.
Obtain solid electrolytic capacitor by in winding element (6), forming solid electrolyte layer.As solid electrolyte, for example enumerate polythiophene, polypyrrole, polyaniline, 7,7,8,8-four cyano quinone bismethane complex and their derivative etc., but it is particularly when use gathers Ethylenedioxy Thiophene (PEDT), can access the solid electrolytic capacitor that has big capacity, hangs down the ESR characteristic, so preferred.This PEDT is by making as 3 of monomer, 4-Ethylenedioxy Thiophene (EDT) with can obtain as the p-methyl benzenesulfonic acid iron reaction of oxidant, polymerization.The formation of solid electrolyte layer, by being injected into EDT or EDT solution and oxidizing agent solution (for example butanol solution) in the winding element respectively, made the EDT polymerization in about 1 hour and can carry out in for example about 150 ℃ of heating, perhaps, by the mixed liquor with previously prepared EDT and oxidant be injected in the winding element or in this mixed liquor the dipping winding element make it impregnation, about 150 ℃ of heating for example about 1 hour and can carry out.
Form the winding element of solid electrolyte layer, then be accommodated in the metal-back of bottom tube-like, by forming solid electrolytic capacitor with sealing rubber (for example in the butyl rubber polymer that the copolymer by isobutene and isoprene constitutes, adding rubber) fit sealing as the alkyl phenol resin of vulcanizing agent.Can for example be rated for the solid electrolytic capacitor of 4WV-330 μ F in view of the above.
In the solution of the present invention (a), in winding element, form before the above-mentioned solid electrolyte layer, flood winding element in the solvent of at least a kind of composition among the constituent of solubilized dividing plate, with the dividing plate decrement.This solvent impregnated processing preferably makes the porosity of the partition part after the decrement reach more than 85%, particularly carry out in the scope of 85-95%.The porosity of the partition part after the decrement is the value of being calculated by the arbitrary formula of following formula (1) or formula (2), and in the present invention, the porosity of calculating with the either party at least of formula (1) or formula (2) is to get final product more than 85%.
[porosity] (%)=(A-B)/A * 100 ... formula (1)
Wherein, A=[constitutes the raw-material density of dividing plate] (g/cm
3)
The bulk density of the dividing plate after the B=[decrement] (g/cm
3)
[porosity] (%)=C/ (C+D) * 100 ... formula (2)
Wherein, the quality of the solid electrolyte in the C=[winding element] (g)/[density of solid electrolyte] (g/cm
3)
The quality of the dividing plate after the D=[decrement] (g)/the raw-material density of dividing plate [constitute] (g/cm
3)
Solvent as at least a kind of composition among the constituent of the solubilized dividing plate that in the solvent impregnated processing of winding element, uses, for example enumerate aqueous acid, aqueous alkali, organic solvent, saliferous organic solvent and their mixture more than 2 kinds or 2 kinds, can be among these solvents according to suitable selection of kind of the constituent of the employed dividing plate of winding element.For example, be the occasion of aromatic polyamides at one of constituent of dividing plate, N, N-dimethylacetylamide and/or N-N-methyl-2-2-pyrrolidone N-are preferably used as solvent.
The condition of the solvent impregnated processing of winding element, for example can determine through trial-and-error method, can determine the porosity of this test film to reach necessary temperature and time condition more than 85% in view of the above by having used with the test film of the used identical dividing plate of winding element and the small scale experiments of selected solvent.The solvent impregnated temperature of winding element can be a normal temperature according to the material of dividing plate, but the common proper temperature below the boiling point of the solvent by being heated to use can promote the minimizing of dividing plate.In addition, dip time exists with ... treatment temperature greatly, but can be decided to be 1 fen usually～and about 3 hours.
In addition, in the solution of the present invention (b), in winding element, form before the above-mentioned solid electrolyte layer, winding element is heated to the temperature more than the heat decomposition temperature of the low heat decomposition temperature composition among the constituent of dividing plate, decompose at least a portion of removing low heat decomposition temperature composition, with the dividing plate decrement.This heating and decomposition treatment preferably makes the porosity of the partition part after the decrement reach more than 85%, particularly carry out in the scope of 85-95%.The porosity of the partition part after the decrement is the value of being calculated by the arbitrary formula of following formula (3) or formula (4), and in the present invention, the porosity of calculating with the either party at least of formula (3) or formula (4) is to get final product more than 85%.
[porosity] (%)=(A-B)/A * 100 ... formula (3)
Wherein, A=[constitutes the raw-material density of dividing plate] (g/cm
3)
=[the raw material density of high heat decomposition temperature composition] (g/cm
3The volume fraction of high heat decomposition temperature composition) * [in dividing plate]+[the raw material density of low heat decomposition temperature composition] (g/cm
3Hang down the volume fraction of heat decomposition temperature composition in dividing plate) * []
The bulk density of the dividing plate after the B=[decrement] (g/cm
3)
[porosity] (%)=C/ (C+D) * 100 ... formula (4)
Wherein, the quality of the solid electrolyte in the C=[winding element] (g)/[density of solid electrolyte] (g/cm
3)
The quality of the dividing plate after the D=[decrement] (g)/A
Heating and decomposition treatment can be undertaken by following: with the temperature more than the heat decomposition temperature of low heat decomposition temperature composition among the constituent of the dividing plate of winding element in this winding element, be generally than the high at least 10 ℃ temperature of this heat decomposition temperature and than the heat decomposition temperature of high heat decomposition temperature composition temperature heating a few minutes of low 20 ℃～several hours at least, partly or in fact fully decompose the low heat decomposition temperature composition among the constituent of removing dividing plate thus.Atmosphere around during heat treated just is not particularly limited as long as the thermal decomposition of low heat decomposition temperature composition is carried out rapidly, can be in the gas, in the vacuum, in the liquid any one, but usually heating and decomposition treatment is preferably carried out in air.
The optimum condition of the heating and decomposition treatment of winding element, for example can determine through trial-and-error method, can easily determine the porosity of this test film to reach necessary temperature and time condition more than 85% in view of the above by having used with the small scale experiments of the test film of the used identical dividing plate of winding element.
Like this, according to the present invention, can provide and stably contain the solid electrolytic capacitor that has kept a large amount of solid electrolytes, ESR to reduce electrical characteristics excellences such as effect.
Embodiment
Below, by embodiment the present invention is described more specifically.
Embodiment 1
M-aramid fibre (cut into 6mm with " ノ-メ ッ Network ス " (registered trade mark) of デ ュ Port Application corporate system and) and aromatic polyamides fine strip body (are handled to put down in writing to adopt by the public clear 52-151624 communique of spy with beater and used the material that is precipitated the method manufacturing of machine by the wet type that constitutes of stator and rotor, the Canadian Standard Freeness analyzer is adjusted to 100ml) adopt the wet type method of manufacturing paper with pulp to be shaped to sheet, make aramid paper, as dividing plate.
The aromatic polyamides that makes above-mentioned making is between the centre, coiling changes into and handles and formed anode electrode paper tinsel that the aluminium foil of the oxide film thereon layer that is made of aluminium oxide constitutes and the cathode electrode foil that is made of aluminium foil on the surface by the surface being implemented in advance corrosion treatment and enforcement, has made 2 winding elements.With wherein 1 in the N-N-methyl-2-2-pyrrolidone N-85 ℃ of dippings 2 hours.
Reduce density, the porosity of fractional computation dividing plate by the quality of this winding element.Following table 1 is expressed its result.The raw material density of aromatic polyamides is decided to be 1.35g/cm
3Calculate.
Table 1
| Form | Weight ratio | Weight (the g/m of paper 2) | Thickness (μ m) | Density (g/cm 3) | Porosity (%) | |
| Before the decrement | Aramid fibre/aromatic polyamides fine strip body | 85/15 | 10 | 35 | 0.29 | 79 |
| After the decrement | Aramid fibre/aromatic polyamides fine strip body | - | 6.6 | 35 | 0.19 | 86 |
Then, each winding element (the present invention's product) of having implemented solvent impregnated processing is reached the winding element (relatively product) of not implementing solvent impregnated processing to be immersed in the butanol solution of Ethylenedioxy Thiophene and p-methyl benzenesulfonic acid iron, after making interior fully this solution of impregnation of winding element, take out winding element from this solution, 150 ℃ of heating 1 hour, make the Ethylenedioxy Thiophene polymerization, make the solid electrolyte that forms poly-Ethylenedioxy Thiophene in the winding element.Its result, the present invention's product and product ratio have relatively been confirmed the increase corresponding to porosity, the conservation rate of solid electrolyte increases.
Embodiment 2
M-aramid fibre (" ノ-メ ッ Network ス " (registered trade mark) of デ ュ Port Application corporate system cut into 6mm's) and cellulose (are handled wood pulp with beater, the Canadian Standard Freeness analyzer is adjusted to 300ml's) the employing wet type method of manufacturing paper with pulp is shaped to sheet, make paper, the dividing plate of using as embodiment.In addition, m-aramid fibre (" ノ-メ ッ Network ス " (registered trade mark) of デ ュ Port Application corporate system cut into 6mm's) and aromatic polyamides fine strip body (are put down in writing the material that adopts use to be made by the method for the wet type that the constitutes precipitation machine of stator and rotor with the beater processing by the public clear 52-151624 communique of spy, the Canadian Standard Freeness analyzer is adjusted to 105ml) adopt the wet type method of manufacturing paper with pulp to be shaped to sheet, make aramid paper, the dividing plate of usefulness as a comparative example.
The dividing plate that makes above-mentioned making is between the centre, coiling changes into and handles and formed anode electrode paper tinsel that the aluminium foil of the oxide film thereon layer that is made of aluminium oxide constitutes and the cathode electrode foil that is made of aluminium foil on the surface by the surface being implemented in advance corrosion treatment and enforcement, has made 2 kinds of winding elements.
These 2 kinds of winding elements are put in the thermostatic oven, 350 ℃ of heating 2 hours.
Reduce density, the porosity of fractional computation dividing plate by the quality of these winding elements.Following table 2 is expressed its result.The raw material density of aromatic polyamides is decided to be 1.35g/cm
3, cellulosic raw material density is decided to be 1.55g/cm
3Calculate.
Table 2
| State | Form | Weight ratio | Weight (the g/m of paper 2) | Thickness (μ m) | Density (g/cm 3) | Porosity (%) | |
| Embodiment 2 | Before the heat treated | Aramid fibre/cellulose | 50/50 | 10 | 40 | 0.25 | 83 |
| After the heat treated | Aramid fibre/cellulose | 100/0 | 5 | 37 | 0.14 | 90 | |
| Comparative example 1 | Before the heat treated | Aramid fibre/aromatic polyamides fine strip body | 80/20 | 10 | 40 | 0.25 | 81 |
| After the heat treated | Aramid fibre/aromatic polyamides fine strip body | 80/20 | 10 | 40 | 0.25 | 81 |
Then, each winding element of embodiment 2 and comparative example 1 is immersed in the butanol solution of Ethylenedioxy Thiophene and p-methyl benzenesulfonic acid iron, after making interior fully this solution of impregnation of winding element, take out winding element from this solution, 150 ℃ of heating 1 hour, make the Ethylenedioxy Thiophene polymerization, make the solid electrolyte that forms poly-Ethylenedioxy Thiophene in the winding element.Its result, the winding element ratio of the winding element of embodiment 2 and comparative example 1 has been confirmed the increase corresponding to porosity, the conservation rate of solid electrolyte increases.
Claims (7)
1. solid electrolytic capacitor, it is characterized in that, be by making dividing plate make winding element between reel anode electrode paper tinsel and cathode electrode foil of centre, thereby in this winding element, form the solid electrolytic capacitor that solid electrolyte layer constitutes, wherein (a) was immersed in this winding element before forming this solid electrolyte layer in the solvent of a kind of composition among the constituent of solubilized dividing plate at least, perhaps, (b) use the dividing plate that comprises at least 2 kinds of different constituents of heat decomposition temperature as dividing plate, and before forming this solid electrolyte layer, this winding element is heated to the temperature more than the heat decomposition temperature of the low heat decomposition temperature composition among the dividing plate constituent, decompose at least a portion of removing low heat decomposition temperature composition, thereby the dividing plate decrement is constituted.
2. solid electrolytic capacitor according to claim 1, the porosity of the dividing plate after the decrement is more than 85%.
3. solid electrolytic capacitor according to claim 1, solid electrolyte are poly-Ethylenedioxy Thiophenes.
4. solid electrolytic capacitor according to claim 1, in above-mentioned (a), the composition that is dissolved in solvent among the constituent of dividing plate is selected from aromatic polyamides, polyester, polyphenylene sulfide, fluorine resin, PBI (polybenzimidazoles), PBO (polyparaphenylene benzo-dioxazole), polyimides, glass, polyacrylonitrile, oxidized polyacrylonitrile, carbon or its precursor, aluminium oxide, cellulose, starch, polyethylene, polypropylene, epoxy resin, nylon and polyvinyl alcohol.
5. solid electrolytic capacitor according to claim 1, in above-mentioned (a), solvent is selected from aqueous acid, aqueous alkali, organic solvent, saliferous organic solvent and their mixture more than 2 kinds or 2 kinds.
6. solid electrolytic capacitor according to claim 1, in above-mentioned (b), the high heat decomposition temperature composition among the constituent of dividing plate is selected from aromatic polyamides, polyester, polyphenylene sulfide, fluorine resin, PBI (polybenzimidazoles), PBO (polyparaphenylene benzo-dioxazole), polyimides, glass, polyacrylonitrile, oxidized polyacrylonitrile, carbon or its precursor and aluminium oxide.
7. solid electrolytic capacitor according to claim 1, in above-mentioned (b), the low heat decomposition temperature composition among the constituent of dividing plate is selected from cellulose, starch, polyethylene, polypropylene, epoxy resin, nylon, polyvinyl alcohol, aromatic polyamides, polyester, polyphenylene sulfide, fluorine resin, PBI (polybenzimidazoles), PBO (polyparaphenylene benzo-dioxazole) and polyimides.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002360695A JP3975161B2 (en) | 2002-12-12 | 2002-12-12 | Solid electrolytic capacitor |
| JP360697/2002 | 2002-12-12 | ||
| JP360695/2002 | 2002-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1723516A true CN1723516A (en) | 2006-01-18 |
| CN100538942C CN100538942C (en) | 2009-09-09 |
Family
ID=32759704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801056733A Expired - Fee Related CN100538942C (en) | 2002-12-12 | 2003-12-05 | Solid electrolytic capacitor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3975161B2 (en) |
| CN (1) | CN100538942C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900404A (en) * | 2015-03-22 | 2015-09-09 | 深圳江浩电子有限公司 | Low-impedance electrolytic capacitor core cladding and manufacturing method thereof |
| CN110993353A (en) * | 2020-01-06 | 2020-04-10 | 深圳市兴创嘉技术有限公司 | Winding method of electrolytic capacitor core cladding |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7855870B2 (en) * | 2004-08-25 | 2010-12-21 | Sanyo Electric Co., Ltd. | Solid electrolytic capacitor |
| JP4486636B2 (en) * | 2006-12-25 | 2010-06-23 | ニチコン株式会社 | Manufacturing method of solid electrolytic capacitor |
| JP4448865B2 (en) | 2007-03-19 | 2010-04-14 | ニチコン株式会社 | Manufacturing method of solid electrolytic capacitor |
| WO2008139619A1 (en) * | 2007-05-14 | 2008-11-20 | Asahi Kasei Fibers Corporation | Separator for charge device and charge device |
| JP2024046426A (en) * | 2022-09-22 | 2024-04-03 | エルナー株式会社 | Electrolytic capacitor and manufacturing method for the same |
-
2002
- 2002-12-12 JP JP2002360695A patent/JP3975161B2/en not_active Expired - Fee Related
-
2003
- 2003-12-05 CN CNB2003801056733A patent/CN100538942C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900404A (en) * | 2015-03-22 | 2015-09-09 | 深圳江浩电子有限公司 | Low-impedance electrolytic capacitor core cladding and manufacturing method thereof |
| CN110993353A (en) * | 2020-01-06 | 2020-04-10 | 深圳市兴创嘉技术有限公司 | Winding method of electrolytic capacitor core cladding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100538942C (en) | 2009-09-09 |
| JP3975161B2 (en) | 2007-09-12 |
| JP2004193402A (en) | 2004-07-08 |
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