| 摘要 |
A power supply device (100) is connected to an external power supply (10) and supplies electric power to a load (30). The power supply device includes a battery terminal (120) that is used to connect a secondary battery (103), a superposition unit (105) that superposes second electric power output from the secondary battery on first electric power supplied from the external power supply, and that outputs resultant electric power to the load; a power consumption amount retrieve unit (106) that retrieves a power consumption amount of the load; and a controller (101) that controls an amount of the second electric power to be output from the secondary battery, based on the power consumption amount. |
