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Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor

An aluminum electrolytic capacitor and electrolyte technology, applied in electrolytic capacitors, capacitors, circuits, etc., can solve the problems of short service life and poor high temperature resistance.

Inactive Publication Date: 2014-07-23
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolyte of current aluminum electrolytic capacitors has poor high-temperature resistance, which makes the service life of aluminum electrolytic capacitors in high-temperature environments as high as 135°C shorter than 2000 hours, which is difficult to meet actual use needs.

Method used

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  • Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor
  • Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor
  • Electrolyte of aluminum electrolytic capacitor, preparation method thereof and aluminum electrolytic capacitor

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preparation example Construction

[0040] A method for preparing an electrolyte solution for an aluminum electrolytic capacitor according to an embodiment is used to prepare the electrolyte solution for the above-mentioned aluminum electrolytic capacitor, comprising the following steps:

[0041] Mix the main solvent and auxiliary solvent and heat it to 95°C-105°C, then add the solute to obtain a mixture, heat the mixture to 125°C-135°C, keep it at 125°C-135°C for 10 minutes, and cool it down to 100°C naturally Finally, add antiseptic, flash point raising agent, hydrogen extinguishing agent and water-repellent mixture, dissolve and mix evenly, cool naturally, and obtain the electrolytic solution of aluminum electrolytic capacitor.

[0042] Among them, in terms of mass percentage, the main solvent accounts for 33.5%-82.7%, the auxiliary solvent accounts for 4%-20%, the solute accounts for 5%-20%, the preservative accounts for 5%-15%, and the flash point enhancer accounts for 3%- 10%, hydrogen scavenger 0.2% to 1%...

Embodiment 1

[0062] Fabrication of Aluminum Electrolytic Capacitors

[0063] 1. Mix the main solvent and the auxiliary solvent and heat it to 95°C, then add the solute to obtain the mixture, heat the mixture to 125°C, keep it at 125°C for 10 minutes, cool it down to 100°C naturally, add preservatives, flash Point enhancer, hydrogen remover and waterproof mixture, dissolved and mixed evenly, cooled naturally to obtain the electrolyte of aluminum electrolytic capacitors;

[0064] Wherein, the mass percent of main solvent, auxiliary solvent, solute, preservative, flash point raising agent, hydrogen suppressant and waterproof mixture is shown in Table 1 below.

[0065] The main solvent is ethylene glycol, the auxiliary solvent is polyethylene glycol 400, the solute is ammonium isosebacate, the preservative is ethylenediaminetetraacetic acid, the flash point enhancer is polyethylene glycol succinate, and the hydrogen remover It is p-nitrobenzoic acid, and the waterproof mixture is monobutyl ph...

Embodiment 2

[0070] Fabrication of Aluminum Electrolytic Capacitors

[0071] 1. Mix the main solvent and auxiliary solvent and heat it to 105°C, then add the solute to obtain the mixture, heat the mixture to 135°C, keep it at 135°C for 10 minutes, cool it down to 100°C naturally, add preservatives, flash Point enhancer, hydrogen remover and waterproof mixture, dissolved and mixed evenly, cooled naturally to obtain the electrolyte of aluminum electrolytic capacitors;

[0072] Wherein, the mass percent of main solvent, auxiliary solvent, solute, preservative, flash point raising agent, hydrogen suppressant and waterproof mixture is shown in Table 1 below.

[0073] The main solvent is ethylene glycol, the auxiliary solvent is a mixture of polyethylene glycol 400 and mannitol in a mass ratio of 2:1, and the solute is ammonium isosebacate and 2-butylammonium suberate (mass ratio is 1:1 ), the preservative is ethylenediaminetetraacetic acid and 8-carboxyquinoline (mass ratio is 5:2), and the fl...

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Abstract

The invention relates to electrolyte of an aluminum electrolytic capacitor, a preparation method thereof and the aluminum electrolytic capacitor. The electrolyte of the aluminum electrolytic capacitor includes the following components by mass: 33.5-82.7% of a main solvent, 4%-20% of an auxiliary solvent, 5%-20% of a solute, 5%-15% of a corrosion remover, 3%-10% of flash point promotion agent, 0.2%-1% of hydrogen elimination agent and 0.1%-0.5% of water-mixture-proof agent, wherein the solute is at least one of isodecyl ammonium sebate, 2-butyl-cork-acid-ammonium, 2- ethyl ammonium oxalate, 5, 6-ammonium sebate, potassium sebate, sebacic acid, azelaic acid, ammonium azelate, ammonium pentaborate and potassium carboxylate with chains with the number of carbon chains as 24-35. Experiments show that the aluminum electrolytic capacitor using the electrolyte has good high temperature resistance, the service life can be 2000 hours under the environment with the temperature high as 135 DEG C, and the service life is longer.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolytic capacitors, in particular to an electrolytic solution of an aluminum electrolytic capacitor, a preparation method thereof, and an aluminum electrolytic capacitor. Background technique [0002] Aluminum electrolytic capacitors are energy storage components that are widely used in LED lamps. [0003] For LED lamps, due to the high temperature of the working environment and the structural characteristics of the circuit itself, the requirements for aluminum electrolytic capacitors are more stringent. Aluminum electrolytic capacitors used in LED lamps are required to have the characteristics of high temperature resistance and long service life. [0004] The performance of the electrolyte of aluminum electrolytic capacitors directly determines the high temperature resistance and service life of aluminum electrolytic capacitors. The high temperature resistance of the electrolyte of the cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
Inventor 张业华赵勇刚刘丽霞
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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