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Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof

A technology for electrolytic capacitors and aluminum electrolytic capacitors, applied in the field of high-voltage electrolyte and its preparation, can solve the problems of high temperature resistance and short life, and achieve the effects of excellent high temperature resistance, high flash voltage, and improved oxidation efficiency.

Inactive Publication Date: 2016-09-14
GUANGDONG HUANGBAOSHI ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a high-voltage electrolyte solution for electrolytic capacitors in view of the deficiencies of the prior art. The high-voltage electrolyte solution for electrolytic capacitors solves the defects of the existing electrolyte solutions: high temperature resistance, short life, etc.

Method used

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  • Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof
  • Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof
  • Electrolytic capacitor middle-high voltage electrolyte and preparation method thereof

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Embodiment

[0020] Embodiment 1, percent by weight is: ethylene glycol 62%, pure water 3%, nanometer SiO 2 Ethylene glycol solution 13%, alkyl ammonium sebacate and ammonium salt mixture 20.5%, monobutyl phosphate 1%, hydrogen suppressant 0.5%.

[0021] Embodiment 2, percent by weight is: ethylene glycol 68%, pure water 3%, nanometer SiO2 Ethylene glycol solution 5%, half-esterified carboxylate ammonium salt and ammonium salt mixture 22%, monobutyl phosphate 1%, disinfectant Hydrogen agent 1%.

[0022] The characteristics of the electrolyte solution configured in the present invention are shown in the following table (Table 3).

[0023] Characteristic parameters

160-250V (for medium voltage) and 400V (for high frequency and low resistance)

Conductivity (30°C)

2.8 soil 0.5ms / cm

PH value (30°C)

6.5 soil 1.0

Flash voltage

≥460V

Moisture

≤3%

[0024] The invention provides a kind of preparation method of electrolytic solution, it ...

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Abstract

The invention relates to the technical field of electrolytic capacitors, in particular to an electrolytic capacitor middle-high voltage electrolyte and a preparation method thereof. A solvent is formed by mixing one or more of ethylene glycol, diglycol and gamma-butyrolactone, and the weight percentage of the solvent is 60-70%; a solute is formed by mixing two or more of semi-esterified carboxylic ammonium salt, alkyl ammonium sebacate, butyl octanedioic acid ammonium, highly branched multi-carbon carboxylic ammonium salt and quaternary ammonium salt and amine, and the weight percentage of the solute is 10-25%; a compound is formed by mixing one or more of phosphoric acid, monobutyl phosphate, ammonium hypophosphite and ammonium dihydrogen phosphate, and the weight percentage of the compound is 0.3-2%; a hydrogen eliminating agent is a nitrocompound, and the weight percentage of the hydrogen eliminating agent is 0.3-1%; the weight percentage of a nano SiO2 glycol solution is 5-10%; and the weight percentage of pure water is 2-3%. The electrolytic capacitor middle-high voltage electrolyte is added with the nano SiO2 glycol solution and the semi-esterified carboxylic ammonium salt or the highly branched multi-carbon carboxylic ammonium salt, and the electrolytic capacitor middle-high voltage electrolyte has the performances of high electric conductance, high flash fire voltage, high ripple wave resistance and long service life at a high temperature.

Description

technical field [0001] The invention relates to the technical field of electrolytic capacitors, in particular to a high-voltage electrolyte in an electrolytic capacitor and a preparation method thereof. Background technique [0002] Electrolytic capacitors are one of the basic components of electronic products and are widely used. In recent years, with the continuous improvement of the quality of electronic products, the requirements for aluminum electrolytic capacitors are getting higher and higher. For example, capacitors used in electric welding equipment, power supplies and other electronic products, due to the large ripple current passed by the capacitor, self-heating and continuous work, the capacitor is in a high-temperature working environment for a long time, which causes the electrolytic capacitor to be relatively weak in use. prone to failure. [0003] The electrolyte is the cathode of the aluminum electrolytic capacitor, and its performance has a great influence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
CPCH01G9/035
Inventor 刘建华
Owner GUANGDONG HUANGBAOSHI ELECTRONICS TECH CO LTD
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