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Low-voltage formation aluminum foil manufacturing method suitable for high-frequency low-impedance electrolytic condenser aqueous electrolyte

An electrolytic capacitor and water-based electrolyte technology, applied in electrolytic capacitors, capacitors, circuits, etc., can solve the problems of poor ripple current resistance, short service life, low stability, etc. Optimizing the effect of high temperature characteristics

Active Publication Date: 2013-10-23
广西梧州华锋电子铝箔有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a long service life, good high-frequency characteristics, small impedance value suitable for high-frequency low-impedance electrolytic capacitor water system electrolyte low-pressure forming aluminum foil manufacturing method, the aluminum electrolytic Capacitors have strong high temperature resistance, and the high temperature load life can reach 6000 hours or more at 105°C, which effectively solves the problems of short service life, low stability and poor ripple current resistance in existing aluminum electrolytic capacitors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Chemical conversion treatment

[0031] A. Place the aluminum foil in an ammonium adipate solution with a current density of 50mA / cm2, a voltage of 10V, a temperature of 70°C, and a mass ratio of 10% for 5 minutes before taking it;

[0032] B. Place the aluminum foil in an ammonium adipate solution with a current density of 50mA / cm2, a voltage of 29V, a temperature of 85°C, and a mass ratio of 10% for 5 minutes before taking it out;

[0033] C. Place the aluminum foil in an ammonium adipate solution with a current density of 50mA / cm2, a voltage of 47V, a temperature of 85°C, and a mass ratio of 10% for 5 minutes before taking it out;

[0034] D. Place the aluminum foil in an ammonium adipate solution with a current density of 50mA / cm2, a voltage of 72V, a temperature of 85°C, and a mass ratio of 10% for 5 minutes before taking it out;

[0035] E. Place the aluminum foil in an ammonium adipate solution with a current density of 50mA / cm2, a voltage of 103V, a temperatu...

Embodiment 2

[0049] 1) Chemical conversion treatment

[0050] A. Place the aluminum foil in an ammonium adipate solution with a current density of 75mA / cm2, a voltage of 10V, a temperature of 50°C, and a mass ratio of 6% for 4 minutes before taking it;

[0051] B. Place the aluminum foil in an ammonium adipate solution with a current density of 75mA / cm2, a voltage of 29V, a temperature of 85°C, and a mass ratio of 7% for 4 minutes before taking it out;

[0052] C. Place the aluminum foil in an ammonium adipate solution with a current density of 75mA / cm2, a voltage of 47V, a temperature of 85°C, and a mass ratio of 8% for 4 minutes before taking it out;

[0053] D. Place the aluminum foil in an ammonium adipate solution with a current density of 75mA / cm2, a voltage of 72V, a temperature of 85°C, and a mass ratio of 9% for 4 minutes before taking it out;

[0054] E. Place the aluminum foil in an ammonium adipate solution with a current density of 75mA / cm2, a voltage of 103V, a temperature o...

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Abstract

The invention aims to provide a low-voltage formation aluminum foil manufacturing method suitable for high-frequency low-impedance electrolytic condenser aqueous electrolyte. The low-pressure formation aluminum foil is long in service life, good in high-frequency property and small in impedance value. The aluminum electrolytic condenser is strong in high-temperature resistance, and has a high-temperature (105 DEG C) load service life of 6000 hours or more, thus effectively solving the difficult problems of short service life, low stability and poor ripple current resisting capacity of the aluminum electrolytic condenser in the prior art.

Description

technical field [0001] The invention belongs to a manufacturing method of low-pressure forming aluminum foil, in particular to a manufacturing method of low-pressure forming aluminum foil suitable for high-frequency low-impedance electrolytic capacitor water system electrolyte. Background technique [0002] High-frequency low-impedance aluminum electrolytic capacitors are developed on the basis of ordinary aluminum electrolytic capacitors. Ordinary lead-type aluminum electrolytic capacitors generally use hexylene glycol + water system electrolyte. The main purpose of making high frequency and low impedance is to increase the water content of the electrolyte and then increase the conductivity of the electrolyte to reduce the product impedance. For chip products, since the product body needs to go through reflow soldering at 230-250°C during mounting, the hexanediol + water system electrolyte is no longer used, and the γ-butyrolactone system electrolyte is used instead. The m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/055
Inventor 王文宝陈宇峰谭惠忠欧永聪
Owner 广西梧州华锋电子铝箔有限公司
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