CN113517139A - Method for reducing working internal pressure of aluminum electrolytic capacitor - Google Patents
Method for reducing working internal pressure of aluminum electrolytic capacitor Download PDFInfo
- Publication number
- CN113517139A CN113517139A CN202110732447.8A CN202110732447A CN113517139A CN 113517139 A CN113517139 A CN 113517139A CN 202110732447 A CN202110732447 A CN 202110732447A CN 113517139 A CN113517139 A CN 113517139A
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- China
- Prior art keywords
- electrolytic capacitor
- acid
- hydrogen
- aluminum electrolytic
- electrolyte
- Prior art date
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Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 99
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 75
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 19
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 107
- 239000001257 hydrogen Substances 0.000 claims abstract description 107
- 239000003792 electrolyte Substances 0.000 claims abstract description 78
- 239000000956 alloy Substances 0.000 claims abstract description 67
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 64
- 238000004804 winding Methods 0.000 claims abstract description 42
- 239000006096 absorbing agent Substances 0.000 claims abstract description 34
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 45
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 27
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 24
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 22
- 239000002904 solvent Substances 0.000 claims description 18
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 14
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 14
- TYFQFVWCELRYAO-UHFFFAOYSA-N suberic acid Chemical compound OC(=O)CCCCCCC(O)=O TYFQFVWCELRYAO-UHFFFAOYSA-N 0.000 claims description 14
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 13
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 13
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 13
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims description 10
- SVKRTZCBJZSUJT-UHFFFAOYSA-N diazanium;octanedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCC([O-])=O SVKRTZCBJZSUJT-UHFFFAOYSA-N 0.000 claims description 10
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 9
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims description 8
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 8
- 229930195725 Mannitol Natural products 0.000 claims description 8
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- -1 alkyl phosphoric acid Chemical compound 0.000 claims description 8
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 claims description 8
- NHJPVZLSLOHJDM-UHFFFAOYSA-N azane;butanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCC([O-])=O NHJPVZLSLOHJDM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000594 mannitol Substances 0.000 claims description 8
- 235000010355 mannitol Nutrition 0.000 claims description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 8
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 8
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 8
- ARKIFHPFTHVKDT-UHFFFAOYSA-N 1-(3-nitrophenyl)ethanone Chemical compound CC(=O)C1=CC=CC([N+]([O-])=O)=C1 ARKIFHPFTHVKDT-UHFFFAOYSA-N 0.000 claims description 7
- UFBJCMHMOXMLKC-UHFFFAOYSA-N 2,4-dinitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O UFBJCMHMOXMLKC-UHFFFAOYSA-N 0.000 claims description 7
- 239000005711 Benzoic acid Substances 0.000 claims description 7
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 7
- 235000010233 benzoic acid Nutrition 0.000 claims description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 7
- 239000004327 boric acid Substances 0.000 claims description 7
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 7
- CKKXWJDFFQPBQL-UAIGNFCESA-N diazanium;(z)-but-2-enedioate Chemical compound [NH4+].[NH4+].[O-]C(=O)\C=C/C([O-])=O CKKXWJDFFQPBQL-UAIGNFCESA-N 0.000 claims description 7
- 239000000600 sorbitol Substances 0.000 claims description 7
- JKTYGPATCNUWKN-UHFFFAOYSA-N 4-nitrobenzyl alcohol Chemical compound OCC1=CC=C([N+]([O-])=O)C=C1 JKTYGPATCNUWKN-UHFFFAOYSA-N 0.000 claims description 6
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 claims description 6
- 239000001741 Ammonium adipate Substances 0.000 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- CFAHHNGTTHBTNN-UHFFFAOYSA-N [N+](=O)([O-])C1=C(C=CC=C1)[N+](=O)[O-].C1(C=CC(C=C1)=O)=O Chemical compound [N+](=O)([O-])C1=C(C=CC=C1)[N+](=O)[O-].C1(C=CC(C=C1)=O)=O CFAHHNGTTHBTNN-UHFFFAOYSA-N 0.000 claims description 6
- 235000019293 ammonium adipate Nutrition 0.000 claims description 6
- CFBYEGUGFPZCNF-UHFFFAOYSA-N 2-nitroanisole Chemical compound COC1=CC=CC=C1[N+]([O-])=O CFBYEGUGFPZCNF-UHFFFAOYSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052810 boron oxide Inorganic materials 0.000 claims description 5
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims description 5
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 5
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 5
- 239000011975 tartaric acid Substances 0.000 claims description 5
- 235000002906 tartaric acid Nutrition 0.000 claims description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 4
- XTWYTFMLZFPYCI-KQYNXXCUSA-N 5'-adenylphosphoric acid Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O XTWYTFMLZFPYCI-KQYNXXCUSA-N 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 4
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- 229910009972 Ti2Ni Inorganic materials 0.000 claims description 4
- 229910008357 ZrMn2 Inorganic materials 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 claims description 4
- GPEVMRFAFMVKHK-UHFFFAOYSA-N azane;dodecanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCCCCCCCC([O-])=O GPEVMRFAFMVKHK-UHFFFAOYSA-N 0.000 claims description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000019253 formic acid Nutrition 0.000 claims description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 4
- 239000011976 maleic acid Substances 0.000 claims description 4
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 4
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 4
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 4
- 239000012498 ultrapure water Substances 0.000 claims description 4
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical compound CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 3
- 229910052693 Europium Inorganic materials 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 229910052689 Holmium Inorganic materials 0.000 claims description 3
- 229910002335 LaNi5 Inorganic materials 0.000 claims description 3
- 229910052765 Lutetium Inorganic materials 0.000 claims description 3
- 229910019758 Mg2Ni Inorganic materials 0.000 claims description 3
- 229910018561 MmNi5 Inorganic materials 0.000 claims description 3
- 229910052773 Promethium Inorganic materials 0.000 claims description 3
- 229910052772 Samarium Inorganic materials 0.000 claims description 3
- 229910052771 Terbium Inorganic materials 0.000 claims description 3
- 229910052775 Thulium Inorganic materials 0.000 claims description 3
- 229910010380 TiNi Inorganic materials 0.000 claims description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 3
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 claims description 3
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 claims description 3
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- VQMWBBYLQSCNPO-UHFFFAOYSA-N promethium atom Chemical compound [Pm] VQMWBBYLQSCNPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052706 scandium Inorganic materials 0.000 claims description 3
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 3
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 3
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 2
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 claims description 2
- 239000010407 anodic oxide Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000011888 foil Substances 0.000 description 28
- 239000000203 mixture Substances 0.000 description 25
- 238000004519 manufacturing process Methods 0.000 description 13
- 244000025254 Cannabis sativa Species 0.000 description 8
- 240000000907 Musa textilis Species 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920001131 Pulp (paper) Polymers 0.000 description 6
- 239000002356 single layer Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 229910018007 MmNi Inorganic materials 0.000 description 2
- AGVBUFRTWKTYON-UHFFFAOYSA-N azanium;12-hydroxy-12-oxododecanoate Chemical compound N.OC(=O)CCCCCCCCCCC(O)=O AGVBUFRTWKTYON-UHFFFAOYSA-N 0.000 description 2
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910020206 CeNi5 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- ILHIHKRJJMKBEE-UHFFFAOYSA-N hydroperoxyethane Chemical compound CCOO ILHIHKRJJMKBEE-UHFFFAOYSA-N 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000009466 transformation Effects 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
A method for reducing the working internal pressure of an aluminum electrolytic capacitor comprises the steps of sequentially superposing electrolytic paper, a cathode sheet, a hydrogen storage alloy sheet, the electrolytic paper and an anode sheet from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to form the aluminum electrolytic capacitor; wherein the electrolyte comprises a hydrogen absorbing agent, and the mass percent of the hydrogen absorbing agent in the electrolyte is 0.01-0.1%. The invention reduces the consumption of hydrogen absorbing agent in the traditional method, and adds hydrogen storage alloy between the electrolytic paper and the cathode, thereby effectively reducing the internal pressure of the capacitor, greatly prolonging the service life and the reliability, wherein the service life is more than 2 times of the original service life; the boosting capacity and the oxidation efficiency of the electrolyte can be improved, the repair of an anodic oxide film of the aluminum electrolytic capacitor is facilitated, and the self-healing characteristic of the aluminum electrolytic capacitor can be improved, so that the frequency characteristic is improved, and the loss and the leakage current are reduced.
Description
Technical Field
The invention belongs to the field of aluminum electrolytic capacitors, and particularly relates to a method for reducing the working internal pressure of an aluminum electrolytic capacitor.
Background
While the aluminum electrolytic capacitor is steadily increasing in the traditional consumer electronics field, the application field of the aluminum electrolytic capacitor is expanded in various emerging fields such as energy-saving lamps, frequency conversion, new energy sources and the like along with structure transformation and technical progress. The working electrolyte is used as the actual cathode of the aluminum electrolytic capacitor, and the requirement on the working electrolyte is higher and higher depending on the use temperature range of the aluminum electrolytic capacitor and whether the aluminum electrolytic capacitor can reach the indexes of long service life and high reliability.
In order to solve the problem, a hydrogen absorbing agent is usually added into an electrolyte to reduce internal pressure, such as: nitro compounds and phenolic substances such as resorcinol, p-nitrobenzoic acid, p-nitrobenzyl alcohol, m-nitroacetophenone, p-nitrophenol, o-nitroanisole, p-benzoquinone dinitrobenzene and dinitrophenol. After the hydrogen absorbing agent is added, the internal pressure can be reduced, and the pressure boosting capacity of the solution can be improved; however, the hydrogen absorbing agent has low hydrogen absorbing efficiency, small hydrogen absorbing amount, toxicity, environmental pollution, reduced sparking voltage and conductivity of electrolyte, open circuit caused by corrosion of electrode leading-out strips and the like, and has some negative effects on the capacitor.
Disclosure of Invention
To overcome the problems in the prior art, the present invention aims to provide a method for reducing the working internal pressure of an aluminum electrolytic capacitor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for reducing the working internal pressure of an aluminum electrolytic capacitor comprises the steps of sequentially superposing electrolytic paper, a cathode sheet, a hydrogen storage alloy sheet, the electrolytic paper and an anode sheet from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to form the aluminum electrolytic capacitor; wherein the electrolyte comprises a hydrogen absorbing agent, and the mass percent of the hydrogen absorbing agent in the electrolyte is 0.01-0.1%.
The further improvement of the invention is that the electrolyte comprises 5 to 20 percent of solute, 70 to 90 percent of solvent and 0.31 to 15 percent of additive containing hydrogen absorbing agent by mass percent.
In a further improvement of the invention, the solute is one or more of adipic acid, ammonium adipate, formic acid, ammonium formate, maleic acid, benzoic acid, boric acid, ammonium pentaborate, succinic acid, ammonium succinate, sebacic acid, suberic acid, ammonium suberate, azelaic acid, dodecanedioic acid, and ammonium dodecanedioate;
the solvent is one or more of ultrapure water, propanol, ethylene glycol, diethylene glycol, hexanediol, glycerol, mannitol, glycerol, N-dimethylformamide, N-diethylformamide, N-dimethylacetamide and gamma-butyrolactone;
the additive comprises 0.1-9% of waterproof agent, 0.1-9% of hydrogen absorbing agent, 0.1-9% of sparking voltage improver and 0.1-9% of performance improver.
The invention further improves that the waterproof agent is one or more of phosphoric acid, ammonium dihydrogen phosphate, hypophosphorous acid and ADP;
the flash voltage booster is one or more of ethylene oxide, citric acid, ammonium dichromate and tartaric acid;
the performance improver is one or more of boron oxide, ammonium maleate, sorbitol, ethylene glycol and alkyl phosphoric acid.
The invention is further improved in that the hydrogen absorbing agent is one or more of resorcinol, p-nitrobenzoic acid, p-nitrobenzyl alcohol, m-nitroacetophenone, p-nitrophenol, o-nitroanisole, p-benzoquinone dinitrobenzene and 2, 4-dinitrophenol.
A further improvement of the present invention is characterized in that the hydrogen absorbing alloy sheet is one or more hydrogen absorbing alloy materials containing no hydrogen.
A further improvement of the present invention resides in that the hydrogen absorbing alloy sheet has a thickness of not more than 0.03 mm.
The further improvement of the invention is that the width of the hydrogen storage alloy sheet is the same as that of the cathode sheet, and the length of the hydrogen storage alloy sheet is less than or equal to 1 percent of that of the cathode sheet.
The invention is further improved in that the material of the hydrogen storage alloy sheet is LaNi5、LaNi5-xAx，MmNi5、TiNi、Ti2Ni、Mg2Ni、Mg2Cu and ZrMn2One or more of (a); wherein, A is Al, Mn, Co or Cu, x is 1, 2, 3 or 4, Mm is rare earth element lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosiumOne or more of holmium, erbium, thulium, ytterbium, lutetium, scandium, and yttrium.
Compared with the prior art, the invention has the following technical beneficial effects: the invention reduces the consumption of hydrogen absorbing agent in the traditional method, adds the hydrogen storage alloy between the electrolytic paper and the cathode sheet, and reduces the internal pressure by absorbing hydrogen by utilizing the synergistic action of the hydrogen absorbing agent and the hydrogen storage alloy. Compared with the traditional method, the hydrogen absorbing agent is added into the electrolyte, and the hydrogen absorbing agent with smaller dosage can reduce certain internal pressure, reduce corrosion to the electrode leading-out strip and reduce pollution to the environment; the hydrogen absorption amount per gram of the hydrogen storage alloy is improved by 1000 times by using the hydrogen storage alloy, so that the internal pressure of the capacitor is effectively reduced, the service life and the reliability are greatly prolonged, and the service life is more than 2 times of the original service life; and the boosting capacity and the oxidation efficiency of the electrolyte are improved, the repair of an anodic oxide film of the aluminum electrolytic capacitor is facilitated, and the self-healing characteristic of the aluminum electrolytic capacitor can be improved, so that the frequency characteristic is improved, and the loss and the leakage current are reduced.
Drawings
FIG. 1 is a schematic view of an aluminum electrolytic capacitor using a hydrogen occluding alloy according to the present invention.
FIG. 2 is a schematic view of an aluminum electrolytic capacitor not using a hydrogen storage alloy.
In the figure, 1 is an anode sheet, 2 is a cathode sheet, 3 is electrolytic paper, 4 is a hydrogen storage alloy sheet, 5 is an anode pin, and 6 is a cathode pin.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The electrolytic capacitor containing the hydrogen storage alloy sheet manufactured by the invention is put into a life load test.
In the use of the electrolytic capacitor, it is generally considered that when the internal pressure increases to 500% or more of the external air pressure, the capacitor fails, i.e., the time taken for the internal pressure of the capacitor to increase to 500% of the external air pressure is the life of the capacitor.
A method for reducing the working internal pressure of an aluminum electrolytic capacitor by adopting hydrogen storage alloy comprises the following steps: sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, and then winding to form a winding core, wherein the winding core is filled with electrolyte to form the aluminum electrolytic capacitor; wherein the electrolyte comprises a hydrogen getter.
The aluminum electrolytic capacitor manufactured by the invention comprises a roll core, wherein electrolyte is filled in the roll core; the winding core comprises an anode sheet 1, a cathode sheet 2, electrolytic paper 3 and a hydrogen storage alloy sheet 4.
The hydrogen storage alloy sheet 4 is a net-shaped or strip-shaped hydrogen storage alloy material containing no hydrogen;
the electrolyte comprises 6-20% of solute, 70-90% of solvent and 0.31-15% of additive by mass percent.
The solute is: one or more of adipic acid, ammonium adipate, formic acid, ammonium formate, maleic acid, benzoic acid, boric acid, ammonium pentaborate, succinic acid, ammonium succinate, sebacic acid, suberic acid, ammonium suberate, azelaic acid, dodecanedioic acid, and ammonium dodecanedioate.
The solvent is as follows: one or more of ultrapure water, propanol, ethylene glycol, diethylene glycol, hexanediol, glycerol, mannitol, glycerol, N-dimethylformamide, N-diethylformamide, N-dimethylacetamide and gamma-butyrolactone.
The additive comprises a waterproof agent, a hydrogen absorbing agent, a sparking voltage improver and a performance improver, wherein the mass percent of the waterproof agent in the electrolyte is 0.1-9%, the mass percent of the hydrogen absorbing agent in the electrolyte is 0.01-0.1%, the mass percent of the sparking voltage improver is 0.1-9%, and the mass percent of the performance improver in the electrolyte is 0.1-9%;
the waterproof mixture is; one or more of phosphoric acid, ammonium dihydrogen phosphate, hypophosphorous acid and ADP;
the sparking voltage improver comprises: one or more of ethylene oxide, citric acid, ammonium dichromate;
the performance improver comprises: one or more of boron oxide, ammonium maleate, sorbitol, ethylene glycol, alkyl phosphoric acid, and tartaric acid.
Among them, boron oxide can prevent electrode corrosion, ammonium maleate and sorbitol can improve formation characteristics, and ethoxy alcohol can improve low temperature characteristics.
The hydrogen absorbing agent is one or more of resorcinol, p-nitrobenzoic acid, p-nitrobenzyl alcohol, m-nitroacetophenone, p-nitrophenol, o-nitroanisole, p-benzoquinone dinitrobenzene and 2, 4-dinitrophenol.
The anode strip 1 is riveted on the anode pin 5. The hydrogen storage alloy sheet 4 and the cathode sheet 2 are riveted on the cathode pin 6 together.
The thickness of the hydrogen absorbing alloy sheet is not more than 0.03 mm.
The width of the hydrogen storage alloy sheet is the same as that of the cathode sheet, and the length of the hydrogen storage alloy sheet is less than or equal to 1 percent of that of the cathode sheet.
The hydrogen storage alloy sheet is LaNi5、LaNi5-xAx(A ═ Al, Mn, Co, Cu, etc., x ═ 1, 2, 3, 4), MmNi5(Mm is one or more of the rare earth elements lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), scandium (Sc) and yttrium (Y)), TiNi, Ti2Ni、Mg2Ni、Mg2Cu、ZrMn2One or more of (a).
The working voltage of the aluminum electrolytic capacitor is 10-1000V.
Example 1
The thickness of the hydrogen storage alloy sheet is 0.02mm, the length is 30mm, and the width is 15mm5. The anode adopts anode foil with withstand voltage value of 10V for low-voltage aluminum electrolytic capacitor, and the cathode adopts specific capacitance of 500 muF/cm2The cathode foil for aluminum electrolytic capacitor of (2), the electrolytic paper is made of: manila hemp (40% by mass) + spanish grass (60% by mass), with a thickness of 40 μm. The electrolyte uses the electrolyte for a low-voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: 10% of ammonium adipate, 5% of ammonium succinate, 65% of ethylene glycol, 10% of water, 2% of benzoic acid, 2% of ammonium dihydrogen phosphate, 0.05% of p-nitrobenzoic acid, 0.05% of p-nitrobenzyl alcohol, 3% of ammonium dichromate and 2.9% of diethylene glycol. Riveting the hydrogen storage alloy and the cathode sheet on the cathode lead-out wire together, and then from bottom to top, riveting the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anodeThe sheets 1 are sequentially stacked, and then wound to form a winding core, and the winding core is filled with an electrolyte to form an electrolytic capacitor having a specification of 10V-220 muf 13mm x 21mm as shown in fig. 1.
Comparative example 1
The anode adopts anode foil with withstand voltage value of 10V for low-voltage aluminum electrolytic capacitor, and the cathode adopts specific capacitance of 500 muF/cm2The cathode foil for an aluminum electrolytic capacitor of (1) above, wherein the electrolytic paper is composed of manila hemp (40%) + Spanish grass (60%) and has a thickness of 40 μm. The electrolyte uses the electrolyte for a low-voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: 10% of ammonium adipate, 5% of ammonium succinate, 65% of ethylene glycol, 10% of water, 2% of benzoic acid, 2% of ammonium dihydrogen phosphate, 0.5% of p-nitrobenzoic acid, 0.5% of p-nitrobenzyl alcohol, 3% of ammonium dichromate and 2% of diethylene glycol. Then, the electrolytic paper 3, the cathode sheet 2, the electrolytic paper 3 and the anode sheet 1 are sequentially stacked from bottom to top, and then wound to form a roll core, and the roll is filled with the electrolyte to manufacture the electrolytic capacitor with the specification of 10V-220 muF 13mm x 21mm as shown in figure 2.
Example 2
The hydrogen storage alloy is characterized as follows: 0.03mm in thickness, 2mm in length and 10mm in width, and has a band-shaped structure of LaNiCu4. The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 20 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1) is made of a high-pressure-resistant single-layer wood pulp paper having a thickness of 30 μm. The electrolyte uses the electrolyte for the medium-high voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: ammonium suberate 4%, ammonium maleate 1%, ethylene glycol 85%, water 5.9%, phosphoric acid 1%, ammonium dihydrogen phosphate 1%, resorcinol 0.02%, m-nitroacetophenone 0.03%, p-nitrophenol 0.02%, citric acid 1%, and mannitol 1.03%. Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially overlapping the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a roll core, and filling electrolyte into the roll core to manufacture the electrolytic capacitor with the specification of 400V-10 muF 8mm x 12mm as shown in figure 1.
Comparative example 2
The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 20 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1) is made of a high-pressure-resistant single-layer wood pulp paper having a thickness of 30 μm. The electrolyte uses the electrolyte for the medium-high voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: ammonium octanedioate 4%, ammonium maleate 1%, ethylene glycol 85%, water 5%, phosphoric acid 1%, ammonium dihydrogen phosphate 1%, p-nitrophenol 1%, citric acid 1%, and mannitol 1%. And sequentially stacking the electrolytic paper 3, the cathode sheet 2, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor with the specification of 400V-10 muF 8mm x 12mm as shown in figure 2.
Example 3
The hydrogen storage alloy is characterized as follows: two strips of alloy with the thickness of 0.02mm, the length of 100mm and the width of 100mm and a strip-shaped structure are respectively made of Ti2Ni、Mg2And (3) Cu. The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 40 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1) is made of a high-pressure-resistant single-layer wood pulp paper having a thickness of 60 μm. The electrolyte uses the electrolyte for the medium-high voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: 5% of ammonium suberate, 10% of ammonium dodecanedioic acid, 1% of succinic acid, 71% of ethylene glycol, 5% of water, 3% of ammonium dihydrogen phosphate, 0.05% of 2, 4% of dinitrophenol, 1% of ethyl alcohol, 1.95% of citric acid and 1% of mannitol. Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially overlapping the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a roll core, and filling electrolyte into the roll core to manufacture the electrolytic capacitor with the specification of 400V-4700 muF 60mm x 120mm as shown in figure 1.
Comparative example 3
The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 40 mu F/cm2The cathode foil and electrolytic paper for aluminum electrolytic capacitorIs a high-pressure resistant single-layer wood pulp paper with the thickness of 60 mu m. The electrolyte uses the electrolyte for the medium-high voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: 5% of ammonium suberate, 10% of ammonium dodecanedioic acid, 1% of succinic acid, 70% of ethylene glycol, 5% of water, 3% of ammonium dihydrogen phosphate, 2% of 2, 4% of dinitrophenol, 1% of ethyl alcohol, 1% of citric acid and 1% of mannitol. The electrolytic paper 3, the cathode sheet 2, the electrolytic paper 3 and the anode sheet 1 are sequentially stacked from bottom to top, then wound to form a roll core, and the roll is filled with the electrolyte to manufacture the electrolytic capacitor with the specification of 400V-4700 muF 60mm x 120mm as shown in figure 2.
Example 4
The hydrogen storage alloy is characterized as follows: two strips of alloy with the thickness of 0.03mm, the length of 250mm and the width of 200mm and a strip structure are respectively made of CeNi5、CeGdNi5. The anode adopts anode foil for high-voltage aluminum electrolytic capacitor with 700V withstand voltage value, and the cathode adopts specific capacitance of 10 muF/cm2The cathode foil for an aluminum electrolytic capacitor of (1) is a single-layer wood pulp paper having a thickness of 40 μm and high pressure resistance. The electrolyte uses the electrolyte for the medium-high voltage aluminum electrolytic capacitor, and comprises the following components in percentage by mass: 10% of suberic acid, 7% of ammonium suberate, 5% of ammonium succinate, 2% of succinic acid, 70% of ethylene glycol, 1% of boric acid, 1% of ammonium dihydrogen phosphate, 0.02% of p-nitrobenzoic acid, 0.03% of p-nitrobenzol, 0.04% of m-nitroacetophenone, 0.01% of p-nitrophenol, 1.9% of sorbitol, 1% of ethyl sugar alcohol and 1% of diethylene glycol. Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially overlapping the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a roll core, and filling electrolyte into the roll core to manufacture the electrolytic capacitor with the specification of 700V-4700 mu F90 mm x 220mm as shown in figure 1.
Comparative example 4
The anode adopts anode foil for high-voltage aluminum electrolytic capacitor with 700V withstand voltage value, and the cathode adopts specific capacitance of 10 muF/cm2The cathode foil for an aluminum electrolytic capacitor of (1) is a single-layer wood pulp paper having a thickness of 40 μm and high pressure resistance. Medium-high voltage aluminum electrolytic capacitor using electrolyteThe electrolyte for the device comprises the following components in percentage by mass: 10% of suberic acid, 7% of ammonium suberate, 5% of ammonium succinate, 2% of succinic acid, 70% of ethylene glycol, 1% of boric acid, 1% of ammonium dihydrogen phosphate, 1% of p-nitrophenol, 1% of sorbitol, 1% of ethyl sugar alcohol and 1% of diethylene glycol. And sequentially stacking the electrolytic paper 3, the cathode sheet 2, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling the winding core with electrolyte to manufacture the electrolytic capacitor with the specification of 700V-4700 mu F90 mm x 220mm as shown in figure 2.
Each of the examples and comparative examples produced electrolytic capacitors having specifications of 10V-220 μ F13mm x 21mm, 400V-10 μ F8mm mm x 12mm, 400V-4700 μ F60 mm x 120mm, 700V-4700 μ F90 mm x 220mm, and 5 samples were produced for each specification.
Putting the electrolytic capacitor into a service life load experiment at 105 ℃ to obtain the service life experiment result of the aluminum electrolytic capacitor, and recording the ratio P/P of the internal pressure of the capacitor to the external air pressure of the capacitor at 1000h, 2000h, 3000h and 4000h respectively0After removing the abnormal values, the mean value was obtained, and the results are shown in tables 1 to 4:
TABLE 1 Performance of aluminum electrolytic capacitor with specification of 10V-220 μ F13mm x 21mm
TABLE 2 Performance of 400V-10 μ F8mm 12mm aluminum electrolytic capacitor
TABLE 3 Performance of 400V-4700 μ F60 mm 120mm aluminum electrolytic capacitor
TABLE 4 Performance of aluminum electrolytic capacitor with 700V-4700 μ F90 mm x 220mm specification
As can be seen from tables 1 to 4, the electrolytic capacitor prepared by reducing the amount of the hydrogen absorbing agent and using the hydrogen absorbing alloy sheet has a significantly reduced working internal pressure, so that the service life of the electrolytic capacitor is greatly prolonged to 3 to 4 times of the original service life.
Example 5
Preparing an electrolyte: according to the mass percentage, 5 percent of solute, 90 percent of solvent and 5 percent of additive are mixed evenly.
Wherein the solute is adipic acid;
the solvent is gamma-butyrolactone;
the mass percent of the waterproof agent in the electrolyte is 1 percent, the mass percent of the sparking voltage improver is 1 percent, and the mass percent of the performance improver in the electrolyte is 2.9 percent; the mass percentage of the hydrogen absorbing agent in the electrolyte is 0.1 percent.
The waterproof agent is phosphoric acid;
the flash voltage booster is ethylene oxide;
the performance improver is boron oxide.
The hydrogen absorbing agent is resorcinol.
The hydrogen storage alloy sheet is 0.02mm thick, 20mm long and 15mm wide5-xAxA is Al, x is 1, the anode is made of 400V medium-high voltage aluminum electrolytic capacitor anode foil, and the cathode is made of 20 μ F/cm specific capacitance2The cathode foil for an aluminum electrolytic capacitor of (1). The electrolytic paper is made of the following materials: manila hemp (40 mass%) + spanish grass (60 mass%), with a thickness of 40 μm.
Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor.
Example 6
Preparing an electrolyte: according to the mass percentage, 20 percent of solute, 70 percent of solvent and 10 percent of additive are mixed evenly.
Wherein the solute is ammonium adipate;
the solvent is a mixture of diethylene glycol and gamma-butyrolactone;
the mass percent of the waterproof mixture in the electrolyte is 0.1 percent, the mass percent of the sparking voltage improver is 9 percent, and the mass percent of the performance improver in the electrolyte is 0.85 percent; the mass percentage of the hydrogen absorbing agent in the electrolyte is 0.05 percent.
The waterproof mixture is ammonium dihydrogen phosphate;
the sparking voltage improver is citric acid;
the performance improver is ammonium maleate.
The hydrogen absorbing agent is p-nitrobenzoic acid.
The thickness of the hydrogen storage alloy sheet is 0.02mm, the length is 30mm, and the width is 15mm5-xAxWhere A is Mn and x is 4. The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 20 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1). The electrolytic paper is made of the following materials: manila hemp (40 mass%) + spanish grass (60 mass%), with a thickness of 40 μm.
Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor.
Example 7
Preparing an electrolyte: according to the mass percentage, 10 percent of solute, 80 percent of solvent and 10 percent of additive are evenly mixed.
Wherein the solute is a mixture of formic acid, ammonium formate, maleic acid, benzoic acid and boric acid;
the solvent is a mixture of N, N-dimethylacetamide and gamma-butyrolactone;
the mass percent of the waterproof mixture in the electrolyte is 9 percent, the mass percent of the sparking voltage improver is 0.1 percent, and the mass percent of the performance improver in the electrolyte is 0.87 percent; the mass percentage of the hydrogen absorbing agent in the electrolyte is 0.03 percent.
The waterproof mixture is hypophosphorous acid;
the flash voltage booster is ammonium dichromate;
the performance improver is sorbitol.
The hydrogen absorbing agent is p-nitrobenzol.
The hydrogen storage alloy sheet has a net structure MmNi with a thickness of 0.02mm, a length of 30mm and a width of 15mm5And Mm is lanthanum. The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 20 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1). The electrolytic paper is made of the following materials: manila hemp (40 mass%) + spanish grass (60 mass%), with a thickness of 40 μm.
Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor.
Example 8
Preparing an electrolyte: according to the mass percentage, 15 percent of solute, 84.69 percent of solvent and 0.31 percent of additive are mixed evenly.
Wherein the solute is a mixture of benzoic acid, boric acid, ammonium pentaborate, succinic acid and ammonium succinate;
the solvent is a mixture of glycerol, mannitol, glycerol and N, N-dimethylformamide;
the mass percent of the waterproof mixture in the electrolyte is 0.1 percent, the mass percent of the sparking voltage improver is 0.1 percent, and the mass percent of the performance improver in the electrolyte is 0.1 percent; the mass percentage of the hydrogen absorbing agent in the electrolyte is 0.01 percent.
The waterproof agent is a mixture of hypophosphorous acid and ADP;
the flash voltage booster is a mixture of ammonium dichromate and tartaric acid;
the performance improver is a mixture of the ethanol and the alkyl phosphoric acid.
The hydrogen absorbing agent is a mixture of m-nitroacetophenone and p-nitrophenol.
The thickness of the hydrogen storage alloy sheet is 0.02mm, the length is 30mm, and the width is 15mm2A mixture of Ni. The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 20 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1). The electrolytic paper is made of the following materials: manila hemp (40 mass%) + spanish grass (60 mass%), with a thickness of 40 μm.
Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor.
Example 9
Preparing an electrolyte: according to the mass percentage, 10 percent of solute, 75 percent of solvent and 15 percent of additive are evenly mixed.
Wherein the solute is a mixture of sebacic acid and suberic acid;
the solvent is a mixture of propanol, ethylene glycol and diethylene glycol;
the mass percent of the waterproof mixture in the electrolyte is 2%, the mass percent of the sparking voltage improver is 3.9%, and the mass percent of the performance improver in the electrolyte is 9%; the mass percentage of the hydrogen absorbing agent in the electrolyte is 0.1 percent.
The waterproof agent is phosphoric acid;
the sparking voltage improver is tartaric acid;
the performance improver is alkyl phosphoric acid.
The hydrogen absorbing agent is a mixture of p-nitrophenol, o-nitroanisole, p-benzoquinone dinitrobenzene and 2, 4-dinitrophenol.
The hydrogen storage alloy sheet has a net structure MmNi with a thickness of 0.02mm, a length of 30mm and a width of 15mm5And Mm is a mixture of lanthanum, cerium, praseodymium and neodymium. The anode adopts an anode foil for a medium-high voltage aluminum electrolytic capacitor with the withstand voltage value of 400V, and the cathode adopts a specific capacitance of 20 mu F/cm2The cathode foil for an aluminum electrolytic capacitor of (1). The electrolytic paper is made of the following materials: manila hemp (40 mass%) + spanish grass (60 mass%), with a thickness of 40 μm.
Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor.
Example 10
Preparing an electrolyte: according to the mass percentage, 10 percent of solute, 87 percent of solvent and 3 percent of additive are mixed evenly.
Wherein the solute is a mixture of suberic acid, ammonium suberate, azelaic acid, dodecanedioic acid and ammonium dodecanedioate;
the solvent is ultrapure water;
the mass percent of the waterproof mixture in the electrolyte is 1 percent, the mass percent of the sparking voltage improver is 1 percent, and the mass percent of the performance improver in the electrolyte is 0.93 percent; the mass percentage of the hydrogen absorbing agent in the electrolyte is 0.07 percent.
The waterproof agent is a mixture of phosphoric acid and ammonium dihydrogen phosphate;
the flash voltage booster is ammonium dichromate;
the performance improver is alkyl phosphoric acid.
The hydrogen absorbing agent is p-benzoquinone dinitrobenzene.
The hydrogen storage alloy sheet has a mesh structure of Mg with a thickness of 0.02mm, a length of 30mm and a width of 15mm2Ni、Mg2Cu and ZrMn2A mixture of (a). The anode adopts anode foil with withstand voltage value of 10V for low-voltage aluminum electrolytic capacitor, and the cathode adopts specific capacitance of 500 muF/cm2The cathode foil for an aluminum electrolytic capacitor of (1).The electrolytic paper is made of the following materials: manila hemp (40 mass%) + spanish grass (60 mass%), with a thickness of 40 μm.
Riveting the hydrogen storage alloy and the cathode sheet on a cathode lead-out wire together, then sequentially superposing the electrolytic paper 3, the cathode sheet 2, the hydrogen storage alloy sheet 4, the electrolytic paper 3 and the anode sheet 1 from bottom to top, then winding to form a winding core, and filling electrolyte into the winding core to manufacture the electrolytic capacitor.
Claims (9)
1. A method for reducing the working internal pressure of an aluminum electrolytic capacitor is characterized in that electrolytic paper (3), a cathode sheet (2), a hydrogen storage alloy sheet (4), the electrolytic paper (3) and an anode sheet (1) are sequentially overlapped from bottom to top, then winding is carried out to form a winding core, and electrolyte is filled in the winding core to form the aluminum electrolytic capacitor; wherein the electrolyte comprises a hydrogen absorbing agent, and the mass percent of the hydrogen absorbing agent in the electrolyte is 0.01-0.1%.
2. The method of claim 1, wherein the electrolyte comprises 5-20% by mass of solute, 70-90% by mass of solvent, and 0.31-15% by mass of additive containing hydrogen getter.
3. The method of claim 2, wherein the solute is one or more of adipic acid, ammonium adipate, formic acid, ammonium formate, maleic acid, benzoic acid, boric acid, ammonium pentaborate, succinic acid, ammonium succinate, sebacic acid, suberic acid, ammonium suberate, azelaic acid, dodecanedioic acid, and ammonium dodecanedioate;
the solvent is one or more of ultrapure water, propanol, ethylene glycol, diethylene glycol, hexanediol, glycerol, mannitol, glycerol, N-dimethylformamide, N-diethylformamide, N-dimethylacetamide and gamma-butyrolactone;
the additive comprises 0.1-9% of waterproof agent, 0.1-9% of hydrogen absorbing agent, 0.1-9% of sparking voltage improver and 0.1-9% of performance improver.
4. The method for reducing the working internal pressure of the aluminum electrolytic capacitor as claimed in claim 3, wherein the waterproof agent is one or more of phosphoric acid, ammonium dihydrogen phosphate, hypophosphorous acid and ADP;
the flash voltage booster is one or more of ethylene oxide, citric acid, ammonium dichromate and tartaric acid;
the performance improver is one or more of boron oxide, ammonium maleate, sorbitol, ethylene glycol and alkyl phosphoric acid.
5. The method for reducing the internal pressure of an aluminum electrolytic capacitor in operation as claimed in claim 1, wherein the hydrogen getter is one or more of resorcinol, p-nitrobenzoic acid, p-nitrobenzyl alcohol, m-nitroacetophenone, p-nitrophenol, o-nitroanisole, p-benzoquinone dinitrobenzene, and 2, 4-dinitrophenol.
6. The method for reducing the internal pressure of aluminum electrolytic capacitor using hydrogen occluding alloy as recited in claim 1, wherein the hydrogen occluding alloy sheet is one or more hydrogen occluding alloy material containing no hydrogen.
7. The method for reducing the internal pressure of aluminum electrolytic capacitor in operation as claimed in claim 1, wherein the hydrogen absorbing alloy sheet has a thickness of not more than 0.03 mm.
8. The method of claim 1, wherein the hydrogen-absorbing alloy sheet has a width equal to that of the cathode sheet and a length of 1% or less.
9. The method for reducing the internal pressure of aluminum electrolytic capacitor as claimed in claim 1, wherein the hydrogen-storing alloy sheet is LaNi5、LaNi5-xAx，MmNi5、TiNi、Ti2Ni、Mg2Ni、Mg2Cu and ZrMn2One or more of (a); wherein, A ═ Al, Mn, Co or Cu, x ═ 1, 2, 3 or 4, and Mm is one or more of rare earth elements lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium and yttrium.
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