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Method of purifying electrolyte of aluminum electrolytic capacitor

An aluminum electrolytic capacitor and purification method technology, applied in electrolytic capacitors, capacitors, circuits, etc., can solve the problems of large leakage current, low charging and discharging service life, etc., and achieve low leakage current, increased charging and discharging times, and strong practicability. Effect

Inactive Publication Date: 2015-09-30
NANTONG HUAYU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) The service life of charging and discharging at high frequency is low;
[0008] (4) Large leakage current

Method used

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  • Method of purifying electrolyte of aluminum electrolytic capacitor

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 Shown, a kind of aluminum electrolytic capacitor electrolyte purification method of the present invention comprises the following steps:

[0024] (1) Add electrolyte: manually put the electrolyte into the designated reaction container;

[0025] (2) Power on and pressurize: use capacitor electrode leftovers to cut into two electrode rods, put the electrode rods as positive and negative electrodes into the reaction vessel below the electrolyte liquid level, and carry out positive and negative reverse current respectively;

[0026] (3) Electrolytic adsorption reaction: keep the electrode rod energized at 40~60V, and the energized current is 0.5~2.5mA, and carry out electrolytic adsorption reaction;

[0027] (4) Put forward the positive and negative poles: after 25~35 minutes of power on, disconnect the power supply and take out the electrode rod;

[0028] (5) Filtration: The reacted electrolyte is filtered according to the conventional process before...

Embodiment 2

[0033] On the basis of embodiment 1, the aluminum electrolytic capacitor electrolyte purification method comprises the following steps:

[0034] (1) Add electrolyte: manually put the electrolyte into the designated reaction container;

[0035] (2) Power on and pressurize: use capacitor electrode leftovers to cut into two electrode rods, put the electrode rods as positive and negative electrodes into the reaction vessel below the electrolyte liquid level, and carry out positive and negative reverse current respectively;

[0036] (3) Electrolytic adsorption reaction: keep the electrode rod energized at a voltage of 45~55V, and the energized current at 1.0~2.0mA, and carry out electrolytic adsorption reaction;

[0037] (4) Put forward the positive and negative poles: after 30 minutes of electrification, disconnect the power supply and take out the electrode rod;

[0038] (5) Filtration: The reacted electrolyte is filtered according to the conventional process before use.

...

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Abstract

The invention discloses a method of purifying electrolyte of an aluminum electrolytic capacitor. The method is characterized mainly in that an anode and a cathode are added in the electrolyte which is good in electric conductivity and are electrified through a power supply, the presence of impurity and harmful ions in the electrolyte leads to the increase in resistance, the higher resistance leads to a potential difference between the anode and the cathode, the harmful ions and impurity in the electrolyte move in their opposite polar directions and attach to the anode and the cathode, the first process is finished by purifying the anode and the cathode, and the application requirement is met by repeating the process. Therefore, charge-discharge life is longer, the service life is longer than 8000 hours, and leak current is small. The method is used for high-definition camera equipment for road monitoring and safety camera equipment, has great social benefit, and is convenient to implement, low in cost and higher in practicality.

Description

technical field [0001] The invention belongs to the industry of electronic components, in particular to a method for purifying the electrolytic solution of an aluminum electrolytic capacitor. Background technique [0002] Electrolytic capacitors have electrolyte materials that store charges inside, which are divided into positive and negative polarities, similar to batteries, and cannot be reversed. The positive electrode is a metal substrate with an oxide film, and the negative electrode is connected to the electrolyte (solid and non-solid) through a metal plate. [0003] Nonpolar (bipolar) electrolytic capacitors adopt a double oxide film structure, which is similar to two polarized electrolytic capacitors formed by connecting two negative electrodes, and the two electrodes are two metal plates (both with oxide films) The two groups of oxide films are connected with electrolyte in the middle. Polar electrolytic capacitors are usually used in power circuits or intermediat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
Inventor 杨建华刘龙春何翠祁昊舒杨晨
Owner NANTONG HUAYU ELECTRONICS