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A kind of electrolytic solution for high-voltage high-conductivity aluminum electrolytic capacitor

An aluminum electrolytic capacitor, high conductance technology, applied in the direction of electrolytic capacitors, capacitors, circuits, etc., can solve the problems of flashover voltage and conductivity not high enough, and achieve the effects of not easy to produce gas drum bottom, small loss change, and long service life

Active Publication Date: 2021-05-14
SHENZHEN CAPCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an electrolytic solution for high-voltage high-conductivity aluminum electrolytic capacitors in view of the problem that the flashover voltage and conductivity in the prior art are not high enough

Method used

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  • A kind of electrolytic solution for high-voltage high-conductivity aluminum electrolytic capacitor
  • A kind of electrolytic solution for high-voltage high-conductivity aluminum electrolytic capacitor
  • A kind of electrolytic solution for high-voltage high-conductivity aluminum electrolytic capacitor

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Embodiment 1

[0026] This embodiment is used to illustrate the electrolytic solution for a high-voltage high-conductivity aluminum electrolytic capacitor disclosed in the present invention.

[0027] The electrolyte composition, conductivity and flashover voltage of the high-voltage high-conductivity aluminum electrolytic capacitor provided in this embodiment are shown in the following table.

[0028] Wherein, the preparation method of the electrolyte solution is as follows: heating ethylene glycol and diethylene glycol to 135° C. to 150° C., adding polyvinyl alcohol, stirring and dissolving until the solution is clear and transparent. Then lower the temperature to 125°C-130°C, add boric acid and mannitol, and keep it open for 30-45 minutes. After the heat preservation is completed, cool down to 110°C, add the main solute, ammonium sebacate, azelaic acid, p-nitrobenzyl alcohol and dispersion liquid containing nano-silicon, keep the temperature at 90°C-100°C, and keep warm for 30-45min . Af...

Embodiment 2

[0032] This embodiment is used to illustrate the electrolytic solution for a high-voltage high-conductivity aluminum electrolytic capacitor disclosed in the present invention.

[0033] The electrolyte composition, conductivity and flashover voltage of the high-voltage high-conductivity aluminum electrolytic capacitor provided in this embodiment are shown in the following table.

[0034] Wherein, the preparation method of the electrolyte solution is as follows: heating ethylene glycol and diethylene glycol to 135° C. to 150° C., adding polyvinyl alcohol, stirring and dissolving until the solution is clear and transparent. Then lower the temperature to 125°C-130°C, add boric acid and mannitol, and keep it open for 30-45 minutes. After the heat preservation is completed, cool down to 110°C, add the main solute, ammonium sebacate, azelaic acid, p-nitrobenzyl alcohol and dispersion liquid containing nano-silicon, keep the temperature at 90°C-100°C, and keep warm for 30-45min . Af...

Embodiment 3

[0038] This embodiment is used to illustrate the electrolytic solution for a high-voltage high-conductivity aluminum electrolytic capacitor disclosed in the present invention.

[0039] The electrolyte composition, conductivity and flashover voltage of the high-voltage high-conductivity aluminum electrolytic capacitor provided in this embodiment are shown in the following table.

[0040] Wherein, the preparation method of the electrolyte solution is as follows: heating ethylene glycol and diethylene glycol to 135° C. to 150° C., adding polyvinyl alcohol, stirring and dissolving until the solution is clear and transparent. Then lower the temperature to 125°C-130°C, add boric acid and mannitol, and keep it open for 30-45 minutes. After the heat preservation is completed, cool down to 110°C, add the main solute, ammonium sebacate, azelaic acid, p-nitrobenzyl alcohol and dispersion liquid containing nano-silicon, keep the temperature at 90°C-100°C, and keep warm for 30-45min . Afte...

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Abstract

In order to overcome the problem that the flashover voltage and conductivity in the prior art are not high enough, the invention provides an electrolyte solution for high-voltage high-conductivity aluminum electrolytic capacitors, which includes 40% to 60% of the main solvent, 15% to 30% of the main solvent Solute, 9%~15% auxiliary solvent, 4%~7% auxiliary solute, 5%~10% flash fire enhancer, 0.2%~0.5% hydrogen remover; the main solute is 22~ 24-carbon long-chain dicarboxylic acid or its ammonium salt; the side solute is selected from azelaic acid or its salt, sebacic acid or its salt, dodecanedioic acid or its salt, branched 16-18 carbon Dicarboxylic acid or its salt, inorganic acid or its salt; the flash fire enhancer is selected from the ethylene glycol dispersion containing nano-silicon, and also contains polyvinyl alcohol borate, polyvinyl alcohol with a polymerization degree of 300-3000, Polyglycerol with a polymerization degree of 300-3500, polypropylene alcohol with a polymerization degree of 500-2500, silane coupling agent, polypropylene oxide ether, polymerized fatty acid or its ammonium salt. The electrolytic solution used in the high-voltage high-conductivity aluminum electrolytic capacitor provided by the invention has a high flashover voltage of more than 580V, and the electrical conductivity is increased by 20% to 40% compared with the existing electrolytic solution.

Description

technical field [0001] The invention relates to an electrolytic solution for a high-voltage high-conductivity aluminum electrolytic capacitor, in particular to an electrolytic solution for a 500V high-voltage high-conductivity aluminum electrolytic capacitor. Background technique [0002] With the rapid development of the industrial field, the high efficiency and energy saving of industrial equipment has brought about the high voltage of the circuit system, so that the performance requirements of high voltage and long life of aluminum electrolytic capacitors for high voltage inverters and electronic vehicles are constantly increasing. At present, in order to meet the required high voltage, several capacitors with lower voltage are usually used in series in industrial circuits. However, when one of the capacitors in series fails, it often seriously affects the normal use of other capacitors. , shorten the overall service life. In order to save the space of the whole machine,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/035
Inventor 禤裕汉王明杰贾云
Owner SHENZHEN CAPCHEM TECH CO LTD