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Electrolyte of electrolytic capacitor

A technology of electrolytic capacitors and electrolytes, which is applied in the field of electrolytes, can solve problems such as insufficient stability, and achieve the effects of high withstand voltage, good heat resistance, and high ripple current impact resistance

Inactive Publication Date: 2010-05-19
DONGGUAN HEC CONDENSER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also solutes such as 1,7-sebacic acid, 1,6-sebacic acid, 5,6-sebacic acid, 1,10 dodecanedioic acid and their salts, which are also due to the impact of large ripple currents. It is not stable enough to make it unsuitable for aluminum electrolytic capacitors in high frequency circuits

Method used

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  • Electrolyte of electrolytic capacitor
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  • Electrolyte of electrolytic capacitor

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Embodiment Construction

[0013] The solvents used in the present invention include alcohol solvents, ester solvents, ether solvents, pyrrolidone solvents and the like. Alcohols can be: ethylene glycol, n-butanol, benzyl alcohol, diethylene glycol, vinyl alcohol, n-octanol, etc.; esters can be: γ-valerolactone, δ-valerolactone, etc.; ethers Classes can be: ethylene glycol monobutyl ether, ethylene glycol monomethyl ether, diethylene glycol monobutyl ether, etc.; pyrrolidone solvents such as: N-methylpyrrolidone, α-pyrrolidone, etc. The selection of solvent directly affects the high temperature resistance of the prepared electrolyte and the solubility of the solute in the electrolyte; therefore, in order to make the electrolyte obtain good high temperature resistance and high solubility of the solute, the present invention uses one or both of the above Use the above combinations.

[0014] The present invention adopts organic acids and their salts with multi-branched multi-carbon atoms as solutes, and t...

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Abstract

Specifically, the invention relates to electrolyte in use for electrolytic capacitor. The electrolyte includes 62-95 wt% solvent, 5-27 wt% solute, and 1-13 wt% addition reagent for optimizing performance. The solute is organic acid or its salt with multiple branched chains and multiple carbon atoms. Moreover, in molecular formula of the solute, there is substituent group of macromolecule near to acid radical. The said addition reagent for optimizing performance includes water-soluble high molecular compound, macromolecule polymer, additive for eliminating hydrogen, and additive for anti hydration reaction. Advantages are: high frequency and low impedance, good heat endurance, high withstand voltage, impulsion resistance of high ripple current, and long service life etc.

Description

Technical field: [0001] The invention relates to the technical field of electrolytes, in particular to electrolytes for electrolytic capacitors. Background technique: [0002] In recent years, with the development of the modern communication industry, the power of the power supply used by modern communication equipment is increasing, and the operating frequency is also developing towards high frequency. Therefore, aluminum electrolytic capacitors are used in high-frequency circuits, such as switching power supplies, electronic towns The requirements for current transformers are getting higher and higher, and aluminum electrolytic capacitors are required to have the characteristics of high frequency and low impedance, high temperature resistance, large ripple current impact resistance, and long life. [0003] The electrolyte is the actual cathode of the aluminum electrolytic capacitor, which plays an important role in providing oxygen ions and repairing the anodic oxide film....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/035H01G9/022C07C57/36C07C57/00C08L29/14
Inventor 邢少龙欧一兵
Owner DONGGUAN HEC CONDENSER CO LTD