Frequency conversion bore distribution method for low-voltage anodic foil for aluminum electrolytic capacitor

A technology for aluminum electrolytic capacitors and low-voltage anode foils, applied in electrolytic capacitors, capacitors, circuits, etc., can solve problems such as powder loss and thinning, difficulty in uniform corrosion, and intensified dissolution, so as to save production costs, shorten corrosion time, and reduce discrete rate effect
CN101235533AInactive Publication Date: 2008-08-06XIAMEN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2008-08-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for conversing frequency and distributing holes used in low voltage anode foil of aluminum electrolytic capacitors relates to aluminum electrolytic capacitors, in particular relates to a method which can realize conversing frequency and distributing holes used in low voltage anode foil of the aluminum electrolytic capacitors with high specific volume aluminum electrolytic capacitors and provides a method for conversing frequency and distributing holes used in low voltage anode foil of aluminum electrolytic capacitors, wherein the method comprises the following steps: carrying out conventional oil removal to the aluminum foil, cleaning, and then carrying out hole distribution electrolysis to the aluminum foil, wherein the electrolyte is provided with 0.8-3.8N hydrochloric acid, 0.01-0.5N vitriol oil and 0.1-1.2N alchlor, frequency of the simple-sinusoidal alternating current which is adopted by the electrolysis is 5-80Hz, current density is 0.20-0.37A / cm2, obtaining the etched foil after carrying out conventional hole enlarging, obtaining the aluminum electrolytic capacitors used in low voltage anode foil after carrying out the conventional forming to the etched foil.
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Description

technical field

[0001] The invention relates to an aluminum electrolytic capacitor, in particular to a frequency-conversion hole layout method for a low-voltage anode foil for an aluminum electrolytic capacitor that can realize high specific volume of the low-voltage aluminum foil for the aluminum electrolytic capacitor. Background technique

[0002] Since the Germans manufactured the world's first high-purity aluminum foil electrolytic capacitor in 1938, aluminum electrolytic capacitors have gradually become one of the most widely used electronic components due to their high specific volume, self-healing properties of the oxide film, and low price. one. At present, the common manufacturing process in the world is to use electrochemical corrosion to increase the effective surface area of ​​aluminum foil to increase the specific volume. However, with the development of electronic products in the direction of lightness, thinness, shortness and smallness, the requirements for ...

Claims

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