CN104134544A - Electrolyte of high-frequency ripple-resistant aluminum electrolytic capacitor - Google Patents
Electrolyte of high-frequency ripple-resistant aluminum electrolytic capacitor Download PDFInfo
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- CN104134544A CN104134544A CN201410361501.2A CN201410361501A CN104134544A CN 104134544 A CN104134544 A CN 104134544A CN 201410361501 A CN201410361501 A CN 201410361501A CN 104134544 A CN104134544 A CN 104134544A
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Abstract
The invention relates to the technical field of capacitor electrolytes, and discloses an electrolyte of a high-frequency ripple-resistant aluminum electrolytic capacitor. The electrolyte comprises the following raw materials by weight percentage: 10-18% of main dielectric, 5-12% of auxiliary dielectric, 3-6% of multi-polar group high polymer, 23-36% of glycol, 23-40% of diglycol, 3-6% of hydrogen removal agent and 3-5% of additive, wherein the main dielectric is sebacic acid triethylamine or butyl octanedioic acid ammonium; and the auxiliary dielectric is tetrafluoroboric acid. The electrolyte takes sebacic acid triethylamine or butyl octanedioic acid ammonium as the main dielectric, and the multi-polar group high polymer is added, so that the capacitor can stably operate at 105 DEG C and 500V, is free from current leakage after operating for 1200h, meets a basic requirement of spark voltage, and is low in resistivity; and the operating electrolyte is high in oxidation forming capacity and long in service life.
Description
Technical field
The present invention relates to capacitor electrolyte technical field, refer more particularly to a kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple.
Background technology
Working electrolyte is the actual negative electrode of electrolytic capacitor, the important function of rise oxonium ion is provided, repairing anode oxide film.Therefore, developing high performance Working electrolyte is vital for the performance that ensures capacitor.
Traditional Working electrolyte boric acid+glycol system: this system is the electrolyte of aluminium electrolytic capacitor early application.Make its advantage of electrolyte of preparing in this way be technical maturation, process for preparation is simple to operate, preparation cost is low and market purchasing is easy, can meet the electric property of capacitor general work state.But, such electrolyte from boric acid produce between the crystallization water and ethylene glycol and boric acid because esterification generates a large amount of condensation water, causes the moisture of electrolyte system inside to raise, its result is while being used this electrolyte under the serviceability temperature condition that exceedes 100 DEG C, water in electrolyte will become steam and evaporate, in the assembly of electrochemical capacitor, voltage rise is high thereupon, the so-called destruction problem of unavoidable generation, this system cannot be applied in hot environment, useful life is short, is now substantially eliminated.
Chinese patent CN201410176176.2 discloses a kind of aluminum electrolytic capacitor electrolyte, raw material by following percentage by weight is formulated: main electrolyte 10%-15%, assisted electrolysis matter 7%-10%, ethylene glycol 62%-75%, flash over voltage elevator 5%-8%, waterproof mixture 0.5%-3%, hydrogen agent 0.5%-3% disappears.Described main electrolyte is trimethyladipic acid, and described assisted electrolysis matter is boric acid.This invention utilizes trimethyladipic acid for main electrolyte, and this electrolyte solubility in ethylene glycol is large, even volatilize under the ethylene glycol solvent high temperature in electrolyte, described electrolyte still can keep its conductivity, can obviously promote the serviceability of aluminium electrolytic capacitor.But this invention is short useful life, when the water high temperature of generation, the hydration of antianode oxide-film, causes the loss of condenser capacity and dielectric oxide film electrical property to degenerate, and causes this electrolyte to be unsuitable for manufacturing 105 DEG C of serial high-voltage electrolysis capacitors.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of long service life, at high temperature the high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple of working stability.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, it is characterized in that, comprise the raw material of following percentage by weight: main electrolyte 10-18%, assisted dielectric 5-12%, multipolarity based high-polymer 3-6%, ethylene glycol 23-36%, diethylene glycol (DEG) 30-40%, the hydrogen agent 3-6% that disappears, additive 3-5%; Described main electrolyte is decanedioic acid triethylamine or butyl ammonium octanedioic acid; Described assisted dielectric is tetrafluoro boric acid.
Preferably, the described high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple comprises the raw material of following percentage by weight: main electrolyte 12-15%, assisted dielectric 7-10%, multipolarity based high-polymer 4-5%, ethylene glycol 28-32%, diethylene glycol (DEG) 30-37%, the hydrogen agent 4-5% that disappears, additive 4-5%.
Preferably, the described high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple comprises the raw material of following percentage by weight: main electrolyte 14%, assisted dielectric 8%, multipolarity based high-polymer 4%, ethylene glycol 30%, diethylene glycol (DEG) 35%, the hydrogen agent 5% that disappears, additive 4%.
Preferably, described multipolarity based high-polymer is the copolymer of PVP and expoxy propane, the wherein one of sex change silicone oil.
Preferably, described additive is XP-08 annex solution.
Beneficial effect of the present invention: the present invention uses decanedioic acid triethylamine or butyl ammonium octanedioic acid as main electrolyte, add multipolarity based high-polymer simultaneously, can be at 105 DEG C, steady operation under 500V, work 1200 hours, do not occur leakage phenomenon, meet the basic demand of flash over voltage, resistivity is little; It is strong that the oxidation of Working electrolyte of the present invention forms ability, long service life.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is further described in detail.
Embodiment mono-:
A kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, comprises the raw material of following percentage by weight: main electrolyte 10%, assisted dielectric 5%, the copolymer 3% of PVP and expoxy propane, ethylene glycol 36%, diethylene glycol (DEG) 40%, the hydrogen agent 3% that disappears, XP-08 annex solution 3%; Described main electrolyte is butyl ammonium octanedioic acid; Described assisted dielectric is tetrafluoro boric acid.The present invention can be at 105 DEG C, and steady operation under 500V is worked 1200 hours, does not occur leakage phenomenon, meets the basic demand of flash over voltage, and resistivity is little; It is strong that the oxidation of Working electrolyte of the present invention forms ability, long service life.
Embodiment bis-:
A kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, comprises the raw material of following percentage by weight: main electrolyte 18%, assisted dielectric 12%, sex change silicone oil 6%, ethylene glycol 23%, diethylene glycol (DEG) 30%, the hydrogen agent 6% that disappears, XP-08 annex solution 5%; Described main electrolyte is decanedioic acid triethylamine; Described assisted dielectric is tetrafluoro boric acid.The present invention can be at 105 DEG C, and steady operation under 500V is worked 1200 hours, does not occur leakage phenomenon, meets the basic demand of flash over voltage, and resistivity is little; It is strong that the oxidation of Working electrolyte of the present invention forms ability, long service life.
Embodiment tri-:
A kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, comprises the raw material of following percentage by weight: main electrolyte 12%, assisted dielectric 7%, the copolymer 4% of PVP and expoxy propane, ethylene glycol 32%, diethylene glycol (DEG) 37%, the hydrogen agent 4% that disappears, XP-08 annex solution 4%; Described main electrolyte is butyl ammonium octanedioic acid; Described assisted dielectric is tetrafluoro boric acid.The present invention can be at 105 DEG C, and steady operation under 500V is worked 1200 hours, does not occur leakage phenomenon, meets the basic demand of flash over voltage, and resistivity is little; It is strong that the oxidation of Working electrolyte of the present invention forms ability, long service life.
Embodiment tetra-:
A kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, comprises the raw material of following percentage by weight: main electrolyte 15%, assisted dielectric 10%, sex change silicone oil 5%, ethylene glycol 30%, diethylene glycol (DEG) 30%, the hydrogen agent 5% that disappears, XP-08 annex solution 5%; Described main electrolyte is butyl ammonium octanedioic acid; Described assisted dielectric is tetrafluoro boric acid.The present invention can be at 105 DEG C, and steady operation under 500V is worked 1200 hours, does not occur leakage phenomenon, meets the basic demand of flash over voltage, and resistivity is little; It is strong that the oxidation of Working electrolyte of the present invention forms ability, long service life.
Embodiment five:
A kind of high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, comprises the raw material of following percentage by weight: main electrolyte 14%, assisted dielectric 8%, the copolymer 4% of PVP and expoxy propane, ethylene glycol 30%, diethylene glycol (DEG) 35%, the hydrogen agent 5% that disappears, XP-08 annex solution 4%; Described main electrolyte is decanedioic acid triethylamine; Described assisted dielectric is tetrafluoro boric acid.The present invention can be at 105 DEG C, and steady operation under 500V is worked 1200 hours, does not occur leakage phenomenon, meets the basic demand of flash over voltage, and resistivity is little; It is strong that the oxidation of Working electrolyte of the present invention forms ability, long service life.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. the high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple, it is characterized in that, comprise the raw material of following percentage by weight: main electrolyte 10-18%, assisted dielectric 5-12%, multipolarity based high-polymer 3-6%, ethylene glycol 23-36%, diethylene glycol (DEG) 30-40%, the hydrogen agent 3-6% that disappears, additive 3-5%; Described main electrolyte is decanedioic acid triethylamine or butyl ammonium octanedioic acid; Described assisted dielectric is tetrafluoro boric acid.
2. the high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple according to claim 1, it is characterized in that, comprise the raw material of following percentage by weight: main electrolyte 12-15%, assisted dielectric 7-10%, multipolarity based high-polymer 4-5%, ethylene glycol 28-32%, diethylene glycol (DEG) 30-37%, the hydrogen agent 4-5% that disappears, additive 4-5%.
3. the high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple according to claim 1, is characterized in that, comprises the raw material of following percentage by weight: main electrolyte 14%, assisted dielectric 8%, multipolarity based high-polymer 4%, ethylene glycol 30%, diethylene glycol (DEG) 35%, the hydrogen agent 5% that disappears, additive 4%.
4. the high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple according to claim 1, is characterized in that, described multipolarity based high-polymer is the copolymer of PVP and expoxy propane, the wherein one of sex change silicone oil.
5. the high frequency aluminum electrolytic capacitor electrolyte of resistance to ripple according to claim 1, is characterized in that, described additive is XP-08 annex solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361501.2A CN104134544A (en) | 2014-07-25 | 2014-07-25 | Electrolyte of high-frequency ripple-resistant aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361501.2A CN104134544A (en) | 2014-07-25 | 2014-07-25 | Electrolyte of high-frequency ripple-resistant aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
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| CN104134544A true CN104134544A (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410361501.2A Withdrawn CN104134544A (en) | 2014-07-25 | 2014-07-25 | Electrolyte of high-frequency ripple-resistant aluminum electrolytic capacitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934225A (en) * | 2015-04-30 | 2015-09-23 | 南通理工学院 | Electrolyte and preparation method thereof |
| CN105646239A (en) * | 2016-01-12 | 2016-06-08 | 宝鸡文理学院 | Fluoride-free alkyl carboxylic acid ionic liquid and preparation method and application thereof |
| CN112582180A (en) * | 2020-11-10 | 2021-03-30 | 西安交通大学 | Electrolyte for high-hydration-resistance medium-high voltage aluminum electrolytic capacitor and preparation method |
| CN112582181A (en) * | 2020-11-10 | 2021-03-30 | 西安交通大学 | Electrolyte for low-voltage aluminum electrolytic capacitor with high hydration resistance and preparation method |
-
2014
- 2014-07-25 CN CN201410361501.2A patent/CN104134544A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934225A (en) * | 2015-04-30 | 2015-09-23 | 南通理工学院 | Electrolyte and preparation method thereof |
| CN104934225B (en) * | 2015-04-30 | 2017-12-22 | 南通理工学院 | A kind of electrolyte and preparation method thereof |
| CN105646239A (en) * | 2016-01-12 | 2016-06-08 | 宝鸡文理学院 | Fluoride-free alkyl carboxylic acid ionic liquid and preparation method and application thereof |
| CN112582180A (en) * | 2020-11-10 | 2021-03-30 | 西安交通大学 | Electrolyte for high-hydration-resistance medium-high voltage aluminum electrolytic capacitor and preparation method |
| CN112582181A (en) * | 2020-11-10 | 2021-03-30 | 西安交通大学 | Electrolyte for low-voltage aluminum electrolytic capacitor with high hydration resistance and preparation method |
| CN112582181B (en) * | 2020-11-10 | 2022-02-11 | 西安交通大学 | Electrolyte for low-voltage aluminum electrolytic capacitor with high hydration resistance and preparation method |
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Application publication date: 20141105 |