| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage display method where display time after an operation is constant irrespective of the length of operation time for displaying the level of a voltage, a voltage display device, and a packed battery. <P>SOLUTION: A capacitor 52 is connected to one end of a resistor 51 having the other end connected to a secondary battery and one end of a switch 53 having the other end connected to a capacitor 55 via a resistor 54. While the switch 53 is OFF, the capacitor 55 is charged from the secondary battery toward a battery voltage via the resistor 51. When the switch 53 is turned ON, because of the parallel connection of the capacitor 55 and the capacitor 52, the terminal voltage of the capacitor 55 rises within a short time. Further, when the switch 53 is turned OFF, even while the terminal voltage of the capacitor 55 continuously drops according to the time constant between a parallel circuit and series circuits of the capacitor 55 and resistors 71 and 72, display according to the terminal voltage is executed on displays 82 and 85. <P>COPYRIGHT: (C)2012,JPO&INPIT |
