Waterproofing and low-voltage aluminum electrolytic capacitor working electrolyte

A technology of aluminum electrolytic capacitors and electrolytes, applied in electrolytic capacitors, capacitors, circuits, etc., can solve problems such as oxide film performance damage, achieve low production costs, simple formulas, and realize the effects of industrialized production

Active Publication Date: 2019-04-19
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the working electrolyte with more water has many advantages above, the following disadvantages cannot be ignored: the working electrolyte with more water is easy to hydrate with the oxide film on the surface of the anode aluminum foil, so that the

Method used

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  • Waterproofing and low-voltage aluminum electrolytic capacitor working electrolyte
  • Waterproofing and low-voltage aluminum electrolytic capacitor working electrolyte
  • Waterproofing and low-voltage aluminum electrolytic capacitor working electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1 Electrolyte formula and its preparation

[0034]

[0035] Preparation process: According to the components in the above table, first, heat the main solvent and auxiliary solvent to 60°C and mix, add the solute adipic acid and ammonium formate, then add the waterproof mixture and other additives, and stir for 15 minutes under the constant temperature of 110°C. , Cool to room temperature to obtain electrolyte.

Example Embodiment

[0036] Example 2 Electrolyte formula and its preparation

[0037]

[0038] Preparation process: According to the components in the above table, first, heat the main solvent and auxiliary solvent to 60°C and mix, add the solute adipic acid and ammonium formate, then add the waterproof mixture and other additives, and stir for 15 minutes under the constant temperature of 110°C. , Cool to room temperature to obtain electrolyte.

Example Embodiment

[0039] Example 3 Performance Test

[0040] Working electrolyte parameters are shown in Table 1.

[0041] Table 1 Test parameters of working electrolyte

[0042] Performance parameter

[0043] The electrical characteristics of the electrolytic capacitor obtained using the electrolyte of Example 1 of the present invention at a working voltage of 6.3V to 35V are shown in Table 2. The electrical characteristics of the electrolytic capacitor obtained using the electrolyte of Example 2 of the present invention at a working voltage of 50V to 100V are shown in Table 2. The characteristics are shown in Table 3.

[0044] Table 2 Electrical characteristics under 6.3V~35V working voltage (take 6.3V 1500μf specification as an example)

[0045]

[0046] Table 3: Electrical characteristics under 50V~100V working voltage (take 100V 330μf specification as an example)

[0047]

[0048] From the test results of the performance parameters of the electrolyte in Table 1, it can be seen that the electrolyt...

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Abstract

The invention provides a waterproofing and low-voltage aluminum electrolytic capacitor working electrolyte and a preparation method and application thereof. The electrolyte includes a solute, a main solvent, an auxiliary solvent, a water repellent and other additives, and the water repellent is a mixture of ethylene glycol, lauryl phosphate and hexadecyl phosphate and is obtained by mixing the ethylene glycol, the lauryl phosphate and the hexadecyl phosphate with the ratio of 8:1:1 by the mass percent at the temperature of 100-120 DEG C. The electrolyte provided has good high-temperature stability, and the capacitor assembled by the electrolyte has a long service life at a high temperature, and can achieve a life of more than 20000h at a working voltage U<=100V under the temperature of 105DEG C.

Description

technical field [0001] The invention relates to the technical field of working electrolyte for aluminum electrolytic capacitors, in particular to a working electrolyte for waterproof and low-voltage aluminum electrolytic capacitors, its preparation method and application. Background technique [0002] With the rapid development of electronic technology, aluminum electrolytic capacitors, as one of the basic components of electronic products, have been more and more widely used, and the accompanying aluminum foil corrosion technology for aluminum electrolytic capacitors is also constantly developing. The specific volume of the aluminum foil of the capacitor is getting higher and higher, the volume is getting smaller and smaller, and the loss value of the capacitor is relatively large, especially in the high-frequency field, the impedance value is large, which is very obvious in the water-containing low-voltage aluminum electrolytic capacitor. [0003] The quality and performan...

Claims

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Application Information

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IPC IPC(8): H01G9/035
CPCH01G9/035
Inventor 宋毅臻
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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