Electrolyte for electrolytic capacitor

A technology of electrolytic capacitors and electrolytes, applied in the field of electrolytes, can solve problems such as insufficient withstand voltage, breakdown of aluminum electrolytic capacitors, insufficient withstand voltage of aluminum electrolytic capacitors, etc., and achieve the effect of increasing flash fire voltage and solving insufficient withstand voltage

Inactive Publication Date: 2009-04-08
DONGGUAN HEC CONDENSER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing electrolyte is applied to aluminum electrolytic capacitors above 500V, the withstand voltage will be insufficient
This is related to the solute of the existing electrolyte. The solute of the electrolyte has a decisive effect on the flashover voltage of the electrolyte. Diacid, adipic acid, etc. and their ammonium salts, boric acid or ammonium pentaborate, these solutes have short chains, and the application of these solutes to aluminum electrolytic capacitors above 500V will have insufficient withstand voltage, and aluminum electrolytic capacitors are likely to cause shocks during use. Wear, and cause aluminum electrolytic capacitors to fail

Method used

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  • Electrolyte for electrolytic capacitor
  • Electrolyte for electrolytic capacitor
  • Electrolyte for electrolytic capacitor

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Embodiment Construction

[0020] The present invention can be described in more detail by embodiment, and compare with prior art, following is the example of prior art and the formula composition of the embodiment of the present invention, as shown in table 1:

[0021] Table 1

[0022]

[0023]

[0024] Aluminum electrolytic capacitors were prepared using the electrolytes prepared using the raw material compositions in Table 1, 10 each, and each was used for a life test. The specification of aluminum electrolytic capacitor is: 500WV, 150μF, Φ30×40, and add 500V load at 105℃. The test results are shown in Table 2:

[0025] Table 2

[0026]

[0027] It can be seen from the data in Table 2 that the use of dimer acid as the main solute can greatly increase the flashover voltage of the electrolyte, thereby solving the problem of insufficient withstand voltage of aluminum electrolytic capacitors above 500V.

[0028] The above is only a preferred embodiment of the present invention, so all equival...

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Abstract

The invention relates to the field of electrolyte technique, in particular to an electrolyte used for an electrolytic capacitor. The invention adds dimer acid and salts of the dimmer acid in the original electrolyte as main solute; the dimmer acid is a compound which is formed by octadecadienoic acid in virtue of mutual polymerization of molecules and has extremely long molecule chain; as the dimer acid is used as the main solute and the long molecule chain of the dimer acid can greatly improve the flash voltage of the electrolyte used for the aluminium electrolyte capacitor, thus the electrolyte can solve the problems caused by the aluminium electrolytic container of more than 500V owning to lack of voltage withstanding.

Description

Technical field: [0001] The invention relates to the technical field of electrolytic solutions, in particular to an electrolytic solution for electrolytic capacitors. Background technique: [0002] In recent years, with the rapid development of large-screen flat-panel TVs, power supplies, consumer electronics, high-speed railways, etc., the miniaturization and high voltage of aluminum electrolytic capacitors have been promoted. The demand for aluminum electrolytic capacitors with a voltage of 500V to 600V or even higher will be further increased. [0003] The electrolyte is the actual cathode of the aluminum electrolytic capacitor, which plays an important role in providing oxygen ions and repairing the anodic oxide film. Therefore, a high-performance electrolyte plays a vital role in ensuring the aluminum electrolytic capacitor. However, when the existing electrolytic solutions are applied to aluminum electrolytic capacitors above 500V, the withstand voltage will be insuff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
Inventor 欧一兵邢少龙
Owner DONGGUAN HEC CONDENSER CO LTD
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