WO2007132708A1 - アルミ電解コンデンサ - Google Patents
アルミ電解コンデンサ Download PDFInfo
- Publication number
- WO2007132708A1 WO2007132708A1 PCT/JP2007/059584 JP2007059584W WO2007132708A1 WO 2007132708 A1 WO2007132708 A1 WO 2007132708A1 JP 2007059584 W JP2007059584 W JP 2007059584W WO 2007132708 A1 WO2007132708 A1 WO 2007132708A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- separator
- aluminum electrolytic
- electrolytic capacitor
- foil
- separators
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 67
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 51
- 239000011888 foil Substances 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000003566 sealing material Substances 0.000 claims abstract description 7
- 239000003792 electrolyte Substances 0.000 claims description 29
- 239000002253 acid Substances 0.000 claims description 24
- 239000002904 solvent Substances 0.000 claims description 20
- 238000010494 dissociation reaction Methods 0.000 claims description 14
- 230000005593 dissociations Effects 0.000 claims description 14
- 239000000010 aprotic solvent Substances 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 17
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 16
- 239000000835 fiber Substances 0.000 description 7
- 229910000679 solder Inorganic materials 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 238000005530 etching Methods 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- SPHHYBQCZVTZGS-UHFFFAOYSA-M 2-carboxybenzoate;1,2,3,4-tetramethylimidazol-1-ium Chemical compound CC1=C[N+](C)=C(C)N1C.OC(=O)C1=CC=CC=C1C([O-])=O SPHHYBQCZVTZGS-UHFFFAOYSA-M 0.000 description 2
- ALYNCZNDIQEVRV-UHFFFAOYSA-N 4-aminobenzoic acid Chemical compound NC1=CC=C(C(O)=O)C=C1 ALYNCZNDIQEVRV-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 229960004050 aminobenzoic acid Drugs 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WZFKXMGJSTWHEG-UHFFFAOYSA-L phthalate;1,2,3,4-tetramethylimidazol-1-ium Chemical compound CC1=C[N+](C)=C(C)N1C.CC1=C[N+](C)=C(C)N1C.[O-]C(=O)C1=CC=CC=C1C([O-])=O WZFKXMGJSTWHEG-UHFFFAOYSA-L 0.000 description 2
- 239000003586 protic polar solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- KYRYHBRYSSBWLU-UHFFFAOYSA-N 1,2,3,4-tetramethylimidazolidine Chemical compound CC1CN(C)C(C)N1C KYRYHBRYSSBWLU-UHFFFAOYSA-N 0.000 description 1
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
- CAQYAZNFWDDMIT-UHFFFAOYSA-N 1-ethoxy-2-methoxyethane Chemical compound CCOCCOC CAQYAZNFWDDMIT-UHFFFAOYSA-N 0.000 description 1
- GFISDBXSWQMOND-UHFFFAOYSA-N 2,5-dimethoxyoxolane Chemical compound COC1CCC(OC)O1 GFISDBXSWQMOND-UHFFFAOYSA-N 0.000 description 1
- VHQWJCUFWZLZLL-UHFFFAOYSA-N 2,5-dimethylthiolane 1-oxide Chemical compound CC1CCC(C)S1=O VHQWJCUFWZLZLL-UHFFFAOYSA-N 0.000 description 1
- PPDFQRAASCRJAH-UHFFFAOYSA-N 2-methylthiolane 1,1-dioxide Chemical compound CC1CCCS1(=O)=O PPDFQRAASCRJAH-UHFFFAOYSA-N 0.000 description 1
- ZKOGUIGAVNCCKH-UHFFFAOYSA-N 4-phenyl-1,3-dioxolan-2-one Chemical compound O1C(=O)OCC1C1=CC=CC=C1 ZKOGUIGAVNCCKH-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 description 1
- FBLCZKDDCRSQKV-UHFFFAOYSA-M NC1=C(C(=O)[O-])C=CC=C1.C[N+]1=C(N(C(=C1)C)C)C Chemical compound NC1=C(C(=O)[O-])C=CC=C1.C[N+]1=C(N(C(=C1)C)C)C FBLCZKDDCRSQKV-UHFFFAOYSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- CGBYBGVMDAPUIH-UHFFFAOYSA-N acide dimethylmaleique Natural products OC(=O)C(C)=C(C)C(O)=O CGBYBGVMDAPUIH-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- MYWGVEGHKGKUMM-UHFFFAOYSA-N carbonic acid;ethene Chemical compound C=C.C=C.OC(O)=O MYWGVEGHKGKUMM-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003811 curling process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 1
- CGBYBGVMDAPUIH-ARJAWSKDSA-N dimethylmaleic acid Chemical compound OC(=O)C(/C)=C(/C)C(O)=O CGBYBGVMDAPUIH-ARJAWSKDSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- H01G9/02—Diaphragms; Separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
Definitions
- the present invention relates to an aluminum electrolytic capacitor used in various electronic devices.
- FIG. 2 shows the configuration of a conventional aluminum electrolytic capacitor.
- This figure is a partially cutaway perspective view showing an anode foil 11 in which a dielectric oxide film is formed by chemical conversion on the surface of an aluminum foil whose effective surface area is enlarged by etching, and a cathode in which the aluminum foil is etched.
- Capacitor element 19 is formed by winding foil 12 through separator 13.
- an anode lead wire 15 and a cathode lead wire 16 are connected to the anode foil 11 and the cathode foil 12, respectively, and impregnated with a driving electrolyte solution (not shown).
- the capacitor element 19 is inserted into a metal case 18 such as an aluminum case and sealed with a sealing material 17 such as rubber to obtain a conventional aluminum electrolytic capacitor.
- the separator 13 is made of cellulose fibers such as manila hemp, craft, hemp, and esbalt, and is properly used depending on the performance of the separator such as thickness and density.
- the performance required for aluminum electrolytic capacitors is high capacity, low ESR (equivalent series resistance), and high reliability.
- Patent Document 1 and Patent Document 2 are known.
- a low-density separator is used to improve ESR characteristics as in the case of a conventional aluminum electrolytic capacitor, the tensile strength of the separator is weakened, and the capacitor element is reduced.
- the separator may weaken due to the occurrence of breakage when it is turned and the stress of the anode lead wire and cathode lead wire connected to the cathode foil and the cathode lead wire part. is doing.
- Patent Document 1 Japanese Patent Laid-Open No. 08-273984
- Patent Document 2 Japanese Patent Laid-Open No. 2000-173862
- the present invention provides an aluminum electrolytic capacitor that is excellent in short-circuit resistance and excellent in high-temperature reliability and has a high capacity and low ESR by solving such a conventional problem.
- the present invention has a capacitor element in which an anode foil, a first separator, a cathode foil, and a second separator are sequentially stacked, and a driving electrolyte is applied to the capacitor element.
- An aluminum electrolytic capacitor that is impregnated and stored in a metal case, and then the open end of the metal case is sealed with a sealing material, and the total thickness A of the first and second separators before winding and the thickness after winding
- the ratio B / A of the total thickness B of the first and second separators is 0.5 to 0.8.
- the aluminum electrolytic capacitor of the present invention is a ratio of the total thickness A of the first and second separators before winding to the total thickness B of the first and second separators after winding B /
- A 0.5 to 0.8
- the rate of change in the total thickness of the separator before and after winding is small. Therefore, the stress due to the separator contact portion between the anode lead wire and cathode lead wire is suppressed, and short-circuit failure during capacitor element scraping and short-circuit failure during long-term voltage application at high temperatures can be reduced. It is an excellent one.
- an aprotic solvent is used as the main solvent of the driving electrolyte.
- FIG. 1 is a partially cutaway perspective view of an aluminum electrolytic capacitor of the present invention.
- FIG. 2 is a partially cutaway perspective view of a conventional aluminum electrolytic capacitor.
- FIG. 1 is a partially cutaway perspective view of an aluminum electrolytic capacitor according to an embodiment of the present invention.
- an anode foil 1 is formed by forming a dielectric oxide film with an anodic oxide film on the surface of an aluminum foil whose etching has increased the effective surface area. Further, a cathode lead wire 6 for drawing is connected to the cathode foil 2 obtained by etching the aluminum foil.
- Capacitor element 9 is configured by winding anode foil 1, first separator 3 a, cathode foil 2, and second separator 3 b in order. After impregnating the capacitor element 9 with a driving electrolyte (not shown), the capacitor element 9 is inserted into an aluminum metal case 8 and the opening of the metal case 8 is sealed with a sealing material 7. Yes.
- the capacitor element 9 has a ratio B between the total thickness A of the first and second separators 3a and 3b before winding and the total thickness B of the first and second separators 3a and 3b after winding. / A force is wound so as to be 0.5 to 0.8.
- the ratio BZA is desirably 0.5 to 0.8.
- cellulose fiber rayon fiber, polyethylene fiber, polypropylene fiber, nylon fiber, or the like
- rayon fiber rayon fiber
- polyethylene fiber polyethylene fiber
- polypropylene fiber nylon fiber
- non-hollow fibers that do not twist in the shape of the fibers are superior in short-circuit resistance and ESR characteristics, because the fibers are not easily crushed by compression during staking.
- the density range of the separator should be selected from 0 ⁇ 2 to! ⁇ Og / cm 3 so as not to obstruct the ion pathway of the driving electrolyte as much as possible. Is desirable.
- the density of the separator is less than 0.2 g / cm 3, the force S is more effective for the ESR characteristics S, and the insulation performance of the separator itself is lowered, so the short-circuit resistance cannot be further improved.
- the basis weight of the separator is expressed by the product of density and thickness, and the mechanical strength of the separator can be ensured by setting the basis weight in the range of 4 to 20 g / cm 2 . Breaking at the time of picking can be suppressed, and short circuit resistance can also be improved. In addition, since the volume of the scraping element per unit volume of the capacitor can be increased, it is possible to hold a large amount of driving electrolyte, which is great for stabilizing the characteristics at high temperatures as well as increasing the capacity. It has an effect.
- a jig having a curved shape is used as a staking start position so that excessive stress is not applied to the separator during staking. Furthermore, it is possible to adjust the stress at the time of cutting by controlling the cutting speed and tension by inverter control and load optimization.
- the shape of the lead terminal it is possible to further improve the short-circuit resistance by using a curved shape that does not have an acute protruding portion on the end surface of the lead terminal.
- the shape of a lead terminal with an acute end face of 90 degrees like a normal lead terminal, imposes excessive stress on the separator, resulting in poor short-circuit resistance.
- an acid component having an acid dissociation constant pKa of 5 to 9 is used as the electrolyte of the driving electrolyte.
- the acid component having a pKa of 5 to 9 include malonic acid, maleic acid, fumaric acid, phthalic acid, isophthalanolic acid, terephthalic acid, dimethylmaleic acid, and aminobenzoic acid. If an acid component with an acid dissociation constant pKa of less than 5 is used as the electrolyte for the driving electrolyte, the lead foil portion of the electrode foil undergoes a corrosion reaction due to acid during high-temperature solder reflow, and reliability decreases.
- an aprotic solvent for example, ratatones (y petit ratatones, a valerolatatanes, ⁇ valerolatatanes, etc.), carbonates (ethylene carbonate, propylene carbonate, diethylene carbonate, styrene carbonate, dimethylolate carbonate) Etc.), nitrile type (acetonitrile, 3-methoxypropionitryl etc.), furan type (2,5 dimethoxytetrahydrofuran etc.), sulfolane type (sulfolane, 3 methylsulfolan, 2,5_dimethylsulfolane etc.), ether type (Methylal, 1,2-Dimethoxyjetane, 1_Ethoxy_2-Methoxyethane, 1,2-Diethoxyethane, etc.), Amides ( ⁇ Methylphenolamide, ⁇ , ⁇ ⁇ ⁇ ⁇ -dimethylformamide, ⁇ ⁇
- a tertiary amine compound an imidazolium compound
- an imi Examples include dazolinium compounds and pyridinium compounds.
- anode foil 1 (thickness 100 xm) made of aluminum foil formed with a dielectric oxide film (formation voltage 22 V) by anodic oxidation treatment was prepared.
- Anode foil 1 to which this anode lead wire 5 is connected, a first separator 3a made of cellulose fibers (thickness 40 xm, density 0.4 g / cm 3 ), and an anodized aluminum foil are etched and used for withdrawal.
- the cathode foil 2 (thickness 40 ⁇ m) to which the cathode lead wire 6 is connected and the second separator 3b (thickness 40 ⁇ m) are sequentially stacked and wound, whereby the capacitor element 9 is Obtained.
- the ratio of the total thickness A of the first and second separators 3a and 3b before winding to the total thickness B of the first and second separators 3a and 3b after winding is BZA, 0.5. .
- the lead tension is adjusted so that the ratio B / A is 0.5, and the lead terminal shape is a lead terminal with a curved surface so that there are no sharp protrusions on the end face of the lead terminal. Was used.
- Table 1 shows a list of driving electrolytes used in the examples and comparative examples.
- Example 2 Phthalic acid 1,2,3,4-tramethylimita'zolinium (25) Solvent [0037]
- the driving electrolyte shown in Table 1 (75% by weight of ⁇ -petit-mouth rataton and 25% by weight of 1,2,3,4-tetramethylimidazolium phthalate) 0/0) was used to impregnate the capacitor element 9.
- the acid dissociation constant pKa of this driving electrolyte is 8.40.
- the capacitor element 9 is inserted into a bottomed cylindrical aluminum metal case 8, and the opening of the metal case is sealed by a curling process with a sealing material 7 made of resin vulcanized butyl rubber. An aluminum electrolytic capacitor was produced.
- Example 1 the ratio B / A between the total thickness A of the first and second separators 3a and 3b before winding and the total thickness B of the first and second separators 3a and 3b after winding is 0.
- An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the value was changed to 65.
- Example 1 the ratio B / A between the total thickness A of the first and second separators 3a and 3b before winding and the total thickness B of the first and second separators 3a and 3b after winding is 0.
- An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the value was changed to 80.
- Example 1 the electrolyte for driving shown in Table 1 (75% by weight of ⁇ -petit latatotone, 25% by weight of aminobenzoic acid 1, 2, 3, 4-tetramethylimidazolium, An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the dissociation constant pKa was 6.79).
- Example 1 the winding tension is relaxed, and the separator density is 1. Og / cm 3 , the total thickness A of the first and second separators 3a and 3b before winding, and after winding An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the ratio B / A of the total thickness B of the first and second separators 3a and 3b was 0.85.
- Example 1 a sharp terminal shape is used for the lead terminal, the total thickness A of the first and second separators 3a and 3b before winding, and the first and second separators 3a and 3b after winding.
- An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the ratio B of total B was set to 0.45. [0043] (Comparative Example 3)
- Example 1 the electrolyte solution for driving shown in Table 1 (75% by weight of y-petit-mouth rataton, 25% by weight of oxalic acid 1,2,3,4-tetramethylimidazolium, acid dissociation constant pKa Were used in the same manner as in Example 1 except that 4.86) was used.
- Example 1 driving electrolyte shown in Table 1 D (7 _ Petit port Rataton 75 wt%, co Haq acid 1, 2, 3, 4-tetramethyl imidazolinium two ⁇ beam 25 wt%, acid dissociation An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the constant pKa was 9.2 4).
- Example 1 the electrolyte solution for driving E shown in Table 1 (75% by weight of ethylene glycol monomethyl ether and 25% by weight of 1,2,3,4-tetramethylimidazolium phthalate) An aluminum electrolytic capacitor was produced in the same manner as in Example 1 except that the acid dissociation constant pKa was 8.40).
- Ethylene glycol monomethyl ether is a protic solvent
- the aluminum electrolytic capacitor of Comparative Example 2 since the ratio BZA of the total thickness of the separator was larger than 0.8, the initial characteristics and the life characteristics were greatly deteriorated. It can be seen that the aluminum electrolytic capacitor of Comparative Example 2 has a short terminal incidence because the ratio B / A of the total thickness of the separator is less than 0.5 and has an acute terminal shape.
- the driving electrolytic solution having an acid dissociation constant pKa of less than 5 as in the aluminum electrolytic capacitor of Comparative Example 3 the deterioration of the separator due to the acid is increased, so that the high temperature solder reflow and the short circuit resistance after the life test Becomes worse.
- the drive electrolyte with an acid dissociation constant pKa greater than 9 as in the aluminum electrolytic capacitor in Comparative Example 4 has a low ESR characteristic because the conductivity of the drive electrolyte is low. Power.
- the aluminum electrolytic capacitor of Comparative Example 5 includes the total thickness A of the first and second separators 3a and 3b before winding, and the first and second separators 3a and 3b after winding.
- the ratio B / A of the total thickness B is 0.5 to 0.8, the change rate of the separator thickness before and after winding is small. Therefore, stress due to the separator contact portion of the anode lead wire 5 and the cathode lead wire 6 is suppressed, and an aluminum electrolytic capacitor excellent in short-circuit resistance, ESR characteristics, and high-temperature reliability can be realized.
- the present invention is an aluminum electrolytic capacitor having excellent short-circuit resistance, high capacity, long life, and low ESR characteristics, and demands for miniaturization and high performance of digital circuits such as AV equipment and personal computers. It can correspond to.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800177014A CN101443865B (zh) | 2006-05-15 | 2007-05-09 | 铝电解电容器 |
US12/300,058 US7990681B2 (en) | 2006-05-15 | 2007-05-09 | Aluminum electrolytic capacitor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006134889A JP2007305899A (ja) | 2006-05-15 | 2006-05-15 | アルミ電解コンデンサ |
JP2006-134889 | 2006-05-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007132708A1 true WO2007132708A1 (ja) | 2007-11-22 |
Family
ID=38693804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/059584 WO2007132708A1 (ja) | 2006-05-15 | 2007-05-09 | アルミ電解コンデンサ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7990681B2 (ja) |
JP (1) | JP2007305899A (ja) |
CN (1) | CN101443865B (ja) |
TW (1) | TWI402875B (ja) |
WO (1) | WO2007132708A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100279566A1 (en) * | 2009-05-01 | 2010-11-04 | 3M Innovative Properties Company | Passive electrical article |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101714467B (zh) * | 2009-11-18 | 2011-12-28 | 凯迈嘉华(洛阳)新能源有限公司 | 一种电化学超级电容器及其制造方法 |
US9001497B2 (en) * | 2010-03-16 | 2015-04-07 | Panasonic Intellectual Property Management Co., Ltd. | Electrode foil and capacitor using same |
WO2013069146A1 (ja) * | 2011-11-11 | 2013-05-16 | ニッポン高度紙工業株式会社 | 電解コンデンサ用セパレータ及び電解コンデンサ |
JP2018117093A (ja) * | 2017-01-20 | 2018-07-26 | ニッポン高度紙工業株式会社 | アルミニウム電解コンデンサ用セパレータ及びアルミニウム電解コンデンサ |
TWI661599B (zh) * | 2017-12-04 | 2019-06-01 | 鈺邦科技股份有限公司 | 鋰電池結構及其鋰電池負電極箔 |
CN109916972A (zh) * | 2017-12-12 | 2019-06-21 | 东莞东阳光科研发有限公司 | 一种反应釜及采用其评价阳极箔与工作电解液匹配性的测试方法 |
EP4216247A1 (en) | 2022-01-24 | 2023-07-26 | TDK Electronics AG | Metallized substrate electrode and electrolytic capacitor comprising the electrode |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1186877A (ja) * | 1997-09-10 | 1999-03-30 | Fuji Elelctrochem Co Ltd | 渦巻状電極体の巻回方法 |
JP2950575B2 (ja) * | 1990-04-17 | 1999-09-20 | 日本ケミコン株式会社 | 電解コンデンサ |
JP2002231587A (ja) * | 2001-02-06 | 2002-08-16 | Nec Tokin Ceramics Corp | 電気二重層キャパシタ |
JP2003249421A (ja) * | 2001-06-01 | 2003-09-05 | Matsushita Electric Ind Co Ltd | 電解コンデンサ駆動用高分子電解質複合体、それを用いた電解コンデンサ及びその製造方法 |
JP2003264126A (ja) * | 2002-03-11 | 2003-09-19 | Sanyo Electric Co Ltd | 巻回型固体電解コンデンサ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08273984A (ja) | 1995-03-30 | 1996-10-18 | Nippon Koudoshi Kogyo Kk | 電解コンデンサ |
JP4554012B2 (ja) * | 1998-10-13 | 2010-09-29 | パナソニック株式会社 | アルミニウム電解コンデンサ |
JP3418560B2 (ja) | 1998-12-01 | 2003-06-23 | ルビコン株式会社 | 電解コンデンサ用セパレータ及びこれを用いた電解コンデンサ |
US6504705B2 (en) * | 2000-10-12 | 2003-01-07 | Matsushita Electric Industrial Co., Ltd. | Electrolytic capacitor, circuit board containing electrolytic capacitor, and method for producing the same |
MY133582A (en) * | 2001-12-18 | 2007-11-30 | Matsushita Electric Ind Co Ltd | Aluminum electrolytic capacitor and method for producing the same |
JP2003257793A (ja) * | 2002-03-06 | 2003-09-12 | Honda Motor Co Ltd | 電気二重層コンデンサにおける電解液の調製方法、電解液および電気二重層コンデンサ |
JP2005223122A (ja) * | 2004-02-05 | 2005-08-18 | Matsushita Electric Ind Co Ltd | チップ型アルミ電解コンデンサ及びその製造方法 |
JP4379156B2 (ja) * | 2004-03-03 | 2009-12-09 | パナソニック株式会社 | アルミ電解コンデンサ |
JP4832053B2 (ja) * | 2005-11-01 | 2011-12-07 | 三洋電機株式会社 | 固体電解コンデンサの製造方法 |
US7729103B2 (en) * | 2007-03-20 | 2010-06-01 | Sanyo Electric Co., Ltd. | Solid electrolytic capacitor and method of producing the same |
-
2006
- 2006-05-15 JP JP2006134889A patent/JP2007305899A/ja active Pending
-
2007
- 2007-05-09 US US12/300,058 patent/US7990681B2/en active Active
- 2007-05-09 WO PCT/JP2007/059584 patent/WO2007132708A1/ja active Application Filing
- 2007-05-09 CN CN2007800177014A patent/CN101443865B/zh active Active
- 2007-05-14 TW TW096117034A patent/TWI402875B/zh not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2950575B2 (ja) * | 1990-04-17 | 1999-09-20 | 日本ケミコン株式会社 | 電解コンデンサ |
JPH1186877A (ja) * | 1997-09-10 | 1999-03-30 | Fuji Elelctrochem Co Ltd | 渦巻状電極体の巻回方法 |
JP2002231587A (ja) * | 2001-02-06 | 2002-08-16 | Nec Tokin Ceramics Corp | 電気二重層キャパシタ |
JP2003249421A (ja) * | 2001-06-01 | 2003-09-05 | Matsushita Electric Ind Co Ltd | 電解コンデンサ駆動用高分子電解質複合体、それを用いた電解コンデンサ及びその製造方法 |
JP2003264126A (ja) * | 2002-03-11 | 2003-09-19 | Sanyo Electric Co Ltd | 巻回型固体電解コンデンサ |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100279566A1 (en) * | 2009-05-01 | 2010-11-04 | 3M Innovative Properties Company | Passive electrical article |
US10399295B2 (en) | 2009-05-01 | 2019-09-03 | 3M Innovative Properties Company | Passive electrical article |
Also Published As
Publication number | Publication date |
---|---|
TWI402875B (zh) | 2013-07-21 |
CN101443865B (zh) | 2011-11-30 |
JP2007305899A (ja) | 2007-11-22 |
CN101443865A (zh) | 2009-05-27 |
US20090207557A1 (en) | 2009-08-20 |
TW200809886A (en) | 2008-02-16 |
US7990681B2 (en) | 2011-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007132708A1 (ja) | アルミ電解コンデンサ | |
JP4592792B2 (ja) | 電解コンデンサ | |
JP4894282B2 (ja) | 電気二重層キャパシタ | |
JP2008288296A (ja) | 固体電解コンデンサ | |
JP4654637B2 (ja) | アルミ電解コンデンサの製造方法 | |
JP2005223197A (ja) | 電解コンデンサ | |
WO2013125613A1 (ja) | 電解コンデンサ | |
JP2007235105A (ja) | 電解コンデンサ | |
JP2950575B2 (ja) | 電解コンデンサ | |
JP2009026853A (ja) | 電気二重層キャパシタ | |
JP2006165001A (ja) | アルミニウム電解コンデンサ | |
JP2010098131A (ja) | 電解コンデンサおよび電解コンデンサの製造方法 | |
JP5289016B2 (ja) | 固体電解コンデンサの製造方法 | |
JP4780893B2 (ja) | 固体電解コンデンサ | |
JP2009064958A (ja) | アルミニウム電解コンデンサ | |
CN116721874B (zh) | 一种无胶固定的铝电解电容及其制造方法 | |
CN115136269A (zh) | 电解电容器及其制造方法 | |
JP2001284181A (ja) | 固体電解コンデンサ | |
JP4307820B2 (ja) | アルミニウム電解コンデンサ | |
JP2008117950A (ja) | アルミ電解コンデンサ | |
JP2003309041A (ja) | 固体電解コンデンサ | |
JP7495848B2 (ja) | 電解コンデンサ | |
JP2012009525A (ja) | 固体電解コンデンサおよびその製造方法 | |
JP2001284190A (ja) | 固体電解コンデンサ | |
JP4560875B2 (ja) | 固体電解コンデンサの製造方法 |
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: 07743019 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12300058 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200780017701.4 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: 07743019 Country of ref document: EP Kind code of ref document: A1 |