Aluminium electrolytic capacitor used for LED lamp and working electrolyte employed by aluminium electrolytic capacitor

A technology of aluminum electrolytic capacitors and LED lights, which is applied in the field of aluminum electrolytic capacitors and electrolytic capacitors, can solve problems such as unstable physical and chemical properties of the working electrolyte at high temperature, failure to meet the requirements of aluminum electrolytic capacitors, and poor ripple current resistance, and achieve improved Service life and ripple current resistance, good economic and social benefits, and the effect of reducing volatility

Active Publication Date: 2011-11-23
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the products of CHEMI-CON from Japan are mainly used in the market, and the technical level of the products reaches 30,000 hours of service life at 75°C. The existing technology of aluminum electrolytic capacitors for LED lamps used by domestic manufacturers is relatively single in the working electrolyte system, and the working electrolyte is high temperature. The physical and chemical properties are unstable, thermal decomposition, amidation and esterification reactions are prone to occur, the production process is relatively simple, and the conventional design is used, resulting in large capacitors, low stability, short service life, and poor ripple current resistance.
Can barely meet the requirements of aluminum electrolytic capacitors for LED lamps

Method used

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  • Aluminium electrolytic capacitor used for LED lamp and working electrolyte employed by aluminium electrolytic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare the electrolyte according to the following mass percentages:

[0040] Main solvent: 85.7% glycerol.

[0041] Auxiliary solvent: 5% ethylene glycol.

[0042] Solute: 2% 30-branched carbon potassium salt, 1% potassium sebacate, 1% sebacic acid. The total content is 4%.

[0043] Preservatives: 0.5% ammonium metatungstate, 0.5% ammonium metasilicate. The total content is 1%.

[0044] Additives for improving flash voltage and high temperature stability: 3% polyvinyl formal, 1% ammonium dichromate.

[0045] The total content is 4%.

[0046] Hydrogen remover: 0.2% glucono delta lactone.

[0047] Waterproof mixture: 0.02% hypophosphite, 0.08% ammonium hypophosphite. The content is 0.1%.

[0048] Heat the main solvent and auxiliary solvent to 70-90°C, add the solute, heat to 110-135°C and turn off the heat, add additives, hydrogen scavenger and water-repellent mixture to dissolve them completely, and then cool naturally.

Embodiment 2

[0050] Prepare the electrolyte according to the following mass percentages:

[0051] Main solvent: 73.4% glycerol.

[0052] Auxiliary solvent: 5% ethylene glycol, 5% diethylene glycol. The total content is 10%.

[0053] Solute: 2% 30-branched carbon potassium salt, 3% potassium azelate, 1% azelaic acid, 2% sebacic acid. The total content is 8%.

[0054] Preservatives: 1% pentaerythritol, 1% silicotungstic acid. The total content is 2%.

[0055] Additives for improving flash voltage and high temperature stability: 4% p-aminobenzenesulfonic acid, 1% ammonium dichromate, 1% silicone oil. The total content is 6%.

[0056] Hydrogen remover: 0.4% 2,4,6-trinitrophenol.

[0057] Waterproofing agent: 0.1% strontium nitrate, 0.1% polyphosphoric acid. The content is 0.2%.

[0058] Heat the main solvent and auxiliary solvent to 70-90°C, add the solute, heat to 110-135°C and turn off the heat, add additives, hydrogen scavenger and water-repellent mixture to dissolve them completel...

Embodiment 3

[0060] Prepare the electrolyte according to the following mass percentages:

[0061] Main solvent: 62.1% glycerol

[0062] Auxiliary solvent: 5% trimethyl phosphate, 5% triethylene glycol, 5% diethylene glycol. The total content is 15%.

[0063] Solute: 2% 30-branched carbon potassium salt, 4% potassium benzoate, 3% potassium azelate, 1% azelaic acid, 2% sebacic acid. The total content is 12%.

[0064] Preservatives: 1% pentaerythritol, 2% ammonium tungstate. The total content is 3%.

[0065] Additives for improving flash voltage and high temperature stability: 4% polyvinyl formal, 2% p-aminobenzenesulfonic acid, 1% silicone oil. The total content is 7%.

[0066] Hydrogen remover: 0.5% glucono δ lactone, 0.1% 2,4,6-trinitrophenol. The content is 0.6%. Waterproof mixture: 0.15% polyphosphoric acid, 0.15% sodium tripolyphosphate. The content is 0.3%.

[0067] Heat the main solvent and auxiliary solvent to 70-90°C, add the solute, heat to 110-135°C and turn off the heat...

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Abstract

The invention discloses a working electrolyte employed by an aluminium electrolytic capacitor used by an LED lamp. The ingredients of the electrolyte comprise the following parts, by weight: 38.5% to 85.9% of a main solvent, 5% to 25% of an auxiliary solvent, 4% to 20% of a solute, 5% to 15% of a property-modifying additive, 0.2% to 1% of a hydrogen elimination agent and 0.1% to 0.5% of a water-proof mixture; and the main solvent is glycerol. According to the invention, a working electrolyte of an aluminium electrolytic capacitor is improved. At the same time, materials including an anode aluminum foil and a piece of electrolytic paper are optimized; product design is improved; and a volume of an external form of a product is diminished. Moreover, a sealing technology of the product is enhanced and a square waisted wheel is used for assembly, so that volatility of the electrolyte is reduced and product service life is improved. An aluminium electrolytic capacitor, which has high performance and long service life and is used for an LED lamp, is successfully developed.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolytic capacitors, in particular to a working electrolyte of an aluminum electrolytic capacitor for LED lamps and an electrolytic capacitor using the electrolyte. Background technique [0002] Global lighting electricity consumption accounts for about 20% of the total annual electricity consumption, and as much as 90% of the electricity is converted into heat energy consumption, which is not economically beneficial. As a new type of lighting, LED lights have begun to enter family indoor lighting abroad because of their advantages such as high energy saving, high power saving, good light attenuation performance, and long service life. In China, they have also begun to enter commercial lighting and home lighting. The cost is higher, and consumers still need to have an acceptance process. For LED lights, due to the high temperature of the working environment and the structural characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/022H01G9/035H01G9/04H01G9/145
Inventor 赵勇刚周庆波陈明杰
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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