| 摘要 |
In a power supply system, two or more batteries (405, 406) are connected in series with switch groups (402-404, 407-409). A high voltage is taken out from a VOH terminal, and a battery voltage is taken out from a VOL terminal, and the voltages are converted by two pairs of step down DC-DC converters (105, 106), respectively. In discharge in series connection, the remaining capacity of each battery is measured during a period other than a period when electricity is discharged from the batteries (405, 406), and based on the remaining capacity, the connection method in series connection is controlled, and each battery is controlled to discharge electricity up to a service capacity. |
