| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device or a power converter for power storage device, which uses a secondary battery as a power storing means and stores power with an alternating-current input, wherein an inexpensive battery switching means is used. SOLUTION: After the initial charging of a smoothing capacitor, when the power storage device or the power converter for power storage device is started, closing control of the battery switching means, connected between the smoothing capacitor and the power storing means, is carried out. For this purpose, a means for comparing the voltage of the smoothing capacitor with the voltage of the power-storing means is provided. When the difference in voltage between the smoothing capacitor and the power storing means is reduced to a predetermined value or lower, closing control of the battery switching means is carried out. COPYRIGHT: (C)2004,JPO
|
