125 DEG C high temperature long life aluminum electrolysis capacitor, production method thereof and special electrolysis liquid

An aluminum electrolytic capacitor and electrolyte technology, applied in electrolytic capacitors, liquid electrolytic capacitors, capacitors, etc., can solve problems such as anode corrosion and achieve the effect of high ripple current resistance

Inactive Publication Date: 2009-07-15
FOSHAN SANSHUI RIMING ELECTRONCS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are two major technical difficulties in the production of long-life 125°C aluminum electrolytic capacitors. The first is the working electrolyte, which must have good stability at a high temperature of 125°C; the other difficulty is that it is easy to induce sealing glue under long-term high temperature and high pressure The plug produces anodic corrosion on the aluminum stem and aluminum tongue of the lead-out wire

Method used

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  • 125 DEG C high temperature long life aluminum electrolysis capacitor, production method thereof and special electrolysis liquid
  • 125 DEG C high temperature long life aluminum electrolysis capacitor, production method thereof and special electrolysis liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Aluminum electrolytic capacitor 250V 68μF, 16 x 30.

[0028] The electrolyte solution of formula 1 is used in this embodiment.

[0029] The forming voltage of the aluminum tongue and the aluminum stalk of the positive lead wire used is 300V, and the aluminum purity is 99.97%.

[0030] The rubber stopper used is EPMD with a hardness of 72IRHD and an overall chlorine content of 60PPM.

[0031] Table 3 is the data of the durability test. The test condition is 125°C, the working voltage with ripple current is applied, the ripple current is 227mA / 100HZ, and the test time is 5000 hours.

[0032] Table 3. 250V68μF, 16x30 125℃ durability test data

[0033] time (h) 0 1000 2000 3000 4000 5000 Capacitance C

Embodiment 2

[0034] Example 2 Aluminum electrolytic capacitor 450V 33μF, 16x30.

[0035] The electrolyte solution of formula 2 is used in this embodiment.

[0036] The forming voltage of the aluminum tongue and the aluminum stalk of the positive lead wire used is 600V, and the aluminum purity is 99.97%.

[0037] The rubber stopper used is EPMD with a hardness of 83IRHD and an overall chlorine content of 60PPM.

[0038] Table 4 is the data of the durability test. The test conditions are 125°C, a working voltage with ripple current is applied, the ripple current is 158mA / 100HZ, and the test time is 5000 hours.

[0039] Table 4. 450V33μF, 16x30 125℃ durability test data

[0040] time (h) 0 1000 2000 3000 4000 5000 Capacitance C(μF) 30.85 30.47 29.54 28.75 28.01 26.32 Capacity change rate

[0041] After the example product passed the durability test at 125°C for 5000 hours, the electrical parameters were excellent and the appearance was good. No anode corrosio...

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Abstract

The present invention relates to the manufacture field of capacitor, specifically to a high temperature (125 DEG C) long life electrolytic capacitor, its manufacturing method and its special electrolyte. The capacitor is formed by manufacturing a capacitor core package by coiling together the cathode foil, cathode foil, electrolytic paper and leading-out wires; dipping the core packages in the electrolyte; and then putting in the aluminum shell; and sealing by the plug. The electrolyte has 85-88 parts of solvent composition, 5.5-11 parts of solute, 1-1.5 parts of additives and 3-5 parts of high temperature stabilizer. The capacitor has a low impedance, high-profile current resistance, long-life (5,000 hours in durability test at 125 DEG C).

Description

technical field [0001] The invention relates to the field of capacitor manufacturing, in particular to a high-temperature 125°C long-life aluminum electrolytic capacitor, its manufacturing method and its special electrolyte. Background technique [0002] With the rapid development of electronic technology, more and more aluminum electrolytic capacitors are used in high-temperature occasions, such as high-power energy-saving lamps and electrodeless lamps in green lighting; engine control circuits in automotive electronics, and electronic circuits in HID headlights. , Both require long-life aluminum electrolytic capacitors at 125°C. [0003] There are two major technical difficulties in the production of long-life 125°C aluminum electrolytic capacitors. The first is the working electrolyte, which must have good stability at a high temperature of 125°C; the other difficulty is that it is easy to induce sealing glue under long-term high temperature and high pressure The plug pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/035H01G9/145H01G9/008H01G9/08
Inventor 黄振彬周威耀胡用利苏波郝树福
Owner FOSHAN SANSHUI RIMING ELECTRONCS
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