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Aluminium electrolytic capacitor working electrolyte and capacitor obtained thereof

A technology of aluminum electrolytic capacitors and electrolytes, which is applied in the direction of electrolytic capacitors, capacitors, circuits, etc., can solve the problems of ineffective performance and other problems, and achieve the effects of improving high voltage resistance, good performance, and reducing production

Active Publication Date: 2011-03-02
GUANGDONG FENGHUA ADVANCED TECH HLDG
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AI Technical Summary

Problems solved by technology

The working electrolyte formula can reduce the amount of hydrogen, but it has no obvious effect on improving other aspects of performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The formula that the working electrolyte of embodiment 1-5 adopts is as shown in table 1, and component ratio is as shown in table 2:

[0029] Table 1

[0030]

[0031] main solvent

[0032] Table 2

[0033] components

[0034] The cooking process adopted for the working electrolyte of the above formula is as follows: first, heat the solvent to 80°C, add additive A and additive B, continue heating to 130°C, stir, and then add solute, hydrogen scavenger and water-repellent mixture to the solvent , and maintain this temperature, stir to make it completely dissolved, and then cool to obtain a working electrolyte.

[0035] Test the performance of the high-voltage aluminum electrolytic capacitor with the working electrolyte of the above formula: impregnate the working electrolyte of the above formula with lead-type cores 10μF / 315V, 10μF / 450V and cover-type cores 100μF / 450V and 1000μF / 500V, It is sealed with an aluminum shell, and after the pro...

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PUM

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Abstract

The electrolyte includes solvent, solute, additive for corrosion resistance and property modifying additive. The additive for corrosion resistance includes 8-hydroxy quinoline, mannitol, phosphate monoester and one or more matters selected from organic acids. Compositions of property modifying additive include polyvinyl alcohol and / or carbowax, boracic acid and / or ammonium pentaborate, and glycoletc. Moreover, the electrolyte also includes dehydrogenation agent and waterproof mixture. The electrolyte improves capabilities of high temperature and high pressure resistant, and corrosion proof for aluminum electrolytic capacitor, reduces generation of hydrogen so as to prevent capacitor from blowing up, and hydration causing invalidation of capacitor. The invention also discloses the aluminum electrolytic capacitor of using the electrolyte. The capacitor is operable under rated operational voltage 315V-500V, and temperature 125 deg.C as upper limit.

Description

technical field [0001] The invention relates to a working electrolyte of an aluminum electrolytic capacitor and an aluminum electrolytic capacitor using the working electrolyte. Background technique [0002] In recent years, with the continuous improvement of power supply and display manufacturers' performance requirements for aluminum electrolytic capacitors, especially in recent years, green lighting is being promoted globally, resulting in high-voltage lead-type aluminum electrolytic capacitors being used in electronic energy-saving lamps, electronic ballasts and other lighting fields. Demand continues to increase, and high-voltage aluminum electrolytic capacitors are developing in the direction of high temperature resistance, voltage resistance, and extended service life. [0003] However, the existing aluminum electrolytic capacitors have insufficient performance in terms of voltage resistance and high temperature resistance, and have a short service life. This is rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/035
Inventor 黄远彬赵石华杨利娟
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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