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Electrolyte for ultralow-temperature aluminum electrolytic capacitor and preparation method of electrolyte

An aluminum electrolytic capacitor, ultra-low temperature technology, applied in the direction of electrolytic capacitors, capacitor manufacturing, capacitors, etc., can solve the problems of small capacity of aluminum electrolytic capacitors, failure to start electrical appliances, easy to corrode sealing rubber, etc., to achieve low cost, less heat generation, The effect of reducing self-consumption energy

Active Publication Date: 2020-04-17
ZHUHAI GREE XINYUAN ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the electrolytic solution used in the above-mentioned aluminum electrolytic capacitor has a large resistivity under ultra-low temperature conditions, the capacity of the aluminum electrolytic capacitor is small, the electrical appliances cannot be started, the performance is poor at room temperature and ultra-low temperature, the sealing rubber is easy to corrode, the service life is seriously shortened, and the cost is high. Due to the extremely difficult process and other problems, the present invention provides an electrolyte solution for ultra-low temperature aluminum electrolytic capacitors and a preparation method thereof

Method used

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  • Electrolyte for ultralow-temperature aluminum electrolytic capacitor and preparation method of electrolyte
  • Electrolyte for ultralow-temperature aluminum electrolytic capacitor and preparation method of electrolyte
  • Electrolyte for ultralow-temperature aluminum electrolytic capacitor and preparation method of electrolyte

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Effect test

Embodiment 1

[0032] like figure 1 Shown, in order to prepare the electrolytic solution that above-mentioned ultra-low temperature aluminum electrolytic capacitor is used, its preparation method is as follows:

[0033] S1: Mix the first solvent and the second solvent evenly, and heat to 40-65°C, and keep the temperature for 5-15min;

[0034] S2: Add a third solvent to the mixed solution in S1, heat to 75-90°C, and keep the temperature constant for 20-40min;

[0035] S3: Then add the solute and high-temperature stabilizer, and heat to 100-110°C, and keep the temperature constant for 50-70min;

[0036] S4: Cool down to 80-90°C, add hydrogen remover, and keep the temperature constant for 25-35min;

[0037] S5: Lower the temperature to below 60°C to obtain an ultra-low temperature electrolyte.

[0038] That is, mix 40-50% ethylene glycol and 20-30% water, heat to 50°C and keep it for 10 minutes; then add 5-10% sulfolane, continue to heat to 85°C, keep it for 30 minutes; then add 8-15% ammoni...

Embodiment 2

[0041] Mix 43% ethylene glycol and 22% water, heat to 50°C and keep it warm for 10 minutes; then add 8% 1,2-propanediol, continue heating to 85°C, keep warm for 30 minutes; then add 13% ammonium adipate, 2% hexadiene Acid, 4% mannitol, 1% citric acid, 1.5% diammonium hydrogen phosphate, 2% ammonium succinate, 2% ammonium formate, continue heating to 105°C, keep warm for 60min; then cool down to 85°C, add 1.5% Ammonium nitrobenzoate, keep warm for 30 minutes; finally, continue to cool down to below 60°C to obtain ultra-low temperature electrolyte B.

Embodiment 3

[0043] Mix 45% ethylene glycol and 25% water, heat to 50°C and keep it for 10 minutes; then add 9% ethylene glycol monomethyl ether, continue to heat to 85°C, keep it for 30 minutes; then add 8% ammonium adipate, 1.5% adipate Diacid, 3% mannitol, 1.5% citric acid, 2% diammonium hydrogen phosphate, 3% ammonium succinate, 2% ammonium formate, continue heating to 105°C, keep warm for 60min; then cool down to 85°C, keep warm for 30min; Finally, continue to lower the temperature to below 60°C to obtain ultra-low temperature electrolyte C.

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Abstract

The invention belongs to the technical field of aluminum electrolytic capacitors, and particularly relates to an electrolyte for an ultralow-temperature aluminum electrolytic capacitor and a preparation method of the electrolyte. The electrolyte for the ultralow-temperature aluminum electrolytic capacitor comprises the following raw materials in percentage by mass: 40-50% of a first solvent, 20-30% of a second solvent, 5-10% of a third solvent, 1-15% of a solute and 0.5-5% of an additive. The additive comprises one or more of a hydrogen elimination agent and a high-temperature stabilizer, theelectrolyte is not frozen at the ultralow temperature and is small in resistivity change, the produced aluminum electrolytic capacitor can be normally used at the temperature ranging from-55 DEG C to105 DEG C, sealing rubber of the aluminum electrolytic capacitor is not corroded, the sealing performance is good, the service life is more stable, extra materials and process cost do not need to be increased, and the electrolyte is suitable for large-batch production and use.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolytic capacitors, and in particular relates to an electrolyte solution for ultra-low temperature aluminum electrolytic capacitors and a preparation method thereof. Background technique [0002] As a commonly used device on electronic circuits, capacitors play the electrical role of filtering, bypassing, coupling, decoupling, and switching. Aluminum electrolytic capacitors are the most special and critical components of capacitors, and they are widely used in electrical appliances. , It can be said that without aluminum electrolytic capacitors, there will be no diversification and powerful functions of electrical appliances. [0003] Due to the wide range of applications of electrical appliances, especially the extremely low temperature in winter in the north, strict requirements are placed on the use of aluminum electrolytic capacitors, and the decisive role is the liquid electrolyte (comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035H01G9/08H01G13/00
CPCH01G9/035H01G9/08H01G13/00
Inventor 黄定胜
Owner ZHUHAI GREE XINYUAN ELECTRONICS
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