To provide a power supply system which responds to an instantaneous high energy requirement, and suppresses early deterioration of a lithium ion capacitor while achieving maximum use of power capacity.
The power supply system 10 includes a lithium ion secondary battery 3, a monitoring circuit 6 which monitors terminal voltage of the battery 3, a lithium ion capacitor 4 connected in parallel to the battery 3, an FET 9 which opens and closes to connect and disconnect the capacitor 4, and a protective circuit 5 which monitors the terminal voltage of the capacitor 4. The protective circuit 5 opens and closes the FET 9 to control the full charge voltage of the capacitor 4 to be equal to or lower than an upper-limit voltage determined to be lower than the maximum operating voltage of the lithium ion secondary battery 3.
| JP6760012 | Power storage device and intermediate connector |
| WO/2020/066260 | POWER SUPPLY SYSTEM AND MANAGEMENT DEVICE |
| JP6015626 | Accumulation-of-electricity system |
| JP2006101669A | 2006-04-13 | |||
| JP2007282347A | 2007-10-25 | |||
| JP2008306864A | 2008-12-18 | |||
| JPH07211356A | 1995-08-11 | |||
| JP2005019762A | 2005-01-20 |
Yoshiaki Naito
Hide Tanaka Tetsu