公开(公告)号：US06620306B2

公开(公告)日：2003-09-16

申请号：US09993628

申请日：2001-11-27

申请人： Mitsuhisa Yoshimura ,  Takehiko Nakahara ,  Kazunari Hayashi ,  Hiromi Nakanishi ,  Naomi Kurihara

发明人： Mitsuhisa Yoshimura ,  Takehiko Nakahara ,  Kazunari Hayashi ,  Hiromi Nakanishi ,  Naomi Kurihara

IPC分类号： B23H300

CPC分类号： H01G9/055 ,  C25D11/04 ,  C25F3/04

摘要： A method of manufacturing electrode foil for aluminum electrolytic capacitors and an AC power supply unit used therewith are disclosed. An etching is performed on an aluminum foil immersed in an electrolytic solution by applying an AC current to a pair of electrodes in the electrolytic solution. A waveform of the AC current is a deformed sine wave including a period of time (a) when an electric current rises from zero to a peak value, and another period of time (b) when the electric current falls from the peak value to zero. With the periods of time (a) and (b) made different from each other, the surface area of the aluminum foil is efficiently expanded by the etching and an enhancement of electric capacity of the electrode foil is obtained.

摘要翻译： 公开了一种制造用于铝电解电容器的电极箔的方法和与其一起使用的AC电源单元。 通过向电解液中的一对电极施加AC电流，对浸在电解液中的铝箔进行蚀刻。 AC电流的波形是包括当电流从零上升到峰值的时间（a）的时间的变形的正弦波，以及当电流从峰值下降到零时的另一个时间段（b） 。 在时间（a）和（b）彼此不同的情况下，通过蚀刻有效地扩展铝箔的表面积，并且获得电极箔的电容的增强。