| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply device that can be changed according to the installation site and environment thereof. <P>SOLUTION: The power supply device includes a first equalization circuit 14 for suppressing variations in the remaining battery capacities of a plurality of battery units 10, and a second equalization circuit 24 for suppressing variations in the remaining battery capacities of series-connected battery packs 20 which compose each of the battery units 10. The first equalization circuit 14 includes a first limiting resistor 15 which connects each of the battery units 10 to an output line OL, and a first series circuit configured by a first equalization switch 16. The variations in the remaining battery capacities of the battery units 10 are equalized by the first equalization circuit 14, and the variations in the remaining battery capacities of the battery packs 20 which compose each of the battery units 10 are suppressed by the second equalization circuit 24. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
