Unlock instant, AI-driven research and patent intelligence for your innovation.

Working electrolyte of aluminum electrolytic capacitor for LED and preparation method thereof

An aluminum electrolytic capacitor and electrolyte technology, applied in the field of capacitors, can solve the problems of low flash voltage, easy decomposition, product fire and burn, etc., and achieve the effects of increasing flash voltage, reducing production costs and facilitating mass production.

Inactive Publication Date: 2020-09-08
HUNAN CITY UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, due to the relatively single working electrolyte system used in the existing aluminum electrolytic capacitors for LEDs, the high-temperature physical and chemical properties of the working electrolyte are unstable, the flashover voltage is low, and reactions such as thermal decomposition, amidation, and esterification are prone to occur. With the conventional design, the stability of the capacitor is not high, the ability to withstand ripple current is poor, and it is easy to decompose under high temperature reaction, etc., resulting in high internal heating of the product, serious heating of the capacitor, and rapid failure temperature during the aging process of the product. The phenomenon of large rise and fall causes the electrolytic capacitors used in LED lights to fail to work normally
In addition, the miniaturization of the product, the reduction of the internal space, and the phenomenon of large temperature rise directly lead to repeated fires, burns, and micro-explosions inside the product. This phenomenon will occur repeatedly during repeated charging and aging. This adverse phenomenon will lead to short circuits during use. , there are serious quality risks

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Working electrolyte of aluminum electrolytic capacitor for LED and preparation method thereof
  • Working electrolyte of aluminum electrolytic capacitor for LED and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] A method for preparing a working electrolyte of an aluminum electrolytic capacitor for an LED, comprising the following steps:

[0033] S1. After mixing the main solvent and the auxiliary solvent, heat it to 100-125°C, add the solute, and keep it warm for 5-20 minutes to obtain a mixed solution;

[0034] S2. Under the condition that the temperature is 100-110°C, add a flash voltage booster to the mixed solution until dissolved, heat to 125-135°C, and keep warm for 10-40 minutes;

[0035] S3, after adding all the components of the electrolyte, stir evenly, lower the temperature to 85-100° C., keep the temperature for 10-30 min, and cool to obtain the electrolyte.

[0036] An aluminum electrolytic capacitor is formed by using the above-mentioned electrolytic solution or by using the above-mentioned preparation method of the electrolytic solution.

Embodiment 1

[0038] A working electrolyte for an aluminum electrolytic capacitor for LEDs, comprising the following components in parts by mass: 48 parts of a main solvent, 16 parts of an auxiliary solvent, 17 parts of a solute, and 5 parts of a flash voltage booster.

[0039] The main solvent is ethylene glycol. The auxiliary solvent is ethylene glycol methyl ether. The solute includes dimer salt, sebacic acid, and benzoic acid benzyl ester; the flash voltage booster is a nano-silica dispersant and boric acid ethylene glycol polyester.

[0040] The electrolyte also includes a corrosion inhibitor and a stabilizer in parts by mass, the corrosion inhibitor is monobutyl phosphate and nitroanisole, and the stabilizer is tartaric acid.

[0041] A method for preparing a working electrolyte of an aluminum electrolytic capacitor for an LED, comprising the following steps:

[0042] S1. After mixing the main solvent and the auxiliary solvent, heat it to 118°C, add the solute, and keep it warm for ...

Embodiment 2

[0047] A working electrolyte for an aluminum electrolytic capacitor for LEDs, comprising the following components in parts by mass: 40 parts of a main solvent, 10 parts of an auxiliary solvent, 15 parts of a solute, and 4 parts of a flash voltage booster.

[0048] The main solvent is ethylene glycol.

[0049] Described auxiliary solvent ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether.

[0050] Described solute comprises adipic acid, benzoic acid benzyl ester, boric acid, pentaboric acid, azelaic acid, dodecanedioic acid, ammonium formate, benzoic acid;

[0051] The flash voltage raising agent is boric acid propylene glycol polyester, boric acid glycerol polyester, boric acid polyethylene glycol polyester.

[0052] The electrolytic solution also includes a corrosion inhibitor and a stabilizer in parts by mass, the corrosion inhibitor is monobutyl phosphate and nitroanisole, and the stabilizer is tartaric acid and maleic acid.

[0053] A ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of capacitors, and particularly relates to a working electrolyte of an aluminum electrolytic capacitor for an LED and a preparation method thereof. The electrolyte comprises the following components, by mass: 40-56 parts of a main solvent, 10-20 parts of an auxiliary solvent, 15-30 parts of a solute and 4-6 parts of a sparking voltage improver. The electrolyte has the advantages that the electrolyte is good in high-temperature stability, high in sparking voltage, wide in working temperature range and high and stable in conductivity after being heated, and theelectrolyte and the preparation method have the broad application prospects and market prospects.

Description

technical field [0001] The invention belongs to the field of capacitors, and in particular relates to a working electrolyte of an aluminum electrolytic capacitor for LEDs and a preparation method thereof. Background technique [0002] In recent years, with the national demand for energy saving and consumption reduction, energy consumption has been reduced by 20%, and power consumption has been reduced by 7%. Domestic LED sales are showing an overall increasing trend, and aluminum electrolytic capacitors, as their main components, will also maintain a considerable growth rate and demand. [0003] The main development trend of LED electrolytic capacitors is miniaturization, large ripple resistance and high stability. The production process of aluminum electrolytic capacitors is: [0004] Dosing → cutting → riveting → winding, drying → impregnation → aging → assembly → casing → charging aging → testing → packaging → finished product inspection → storage. [0005] The traditi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035
CPCH01G9/035
Inventor 李加升邓杨保熊洁肖卫初谭跃李稳国
Owner HUNAN CITY UNIV