Patent ID: 7888811

Claim:
A power supply system capable of supplying an electric power to a load device, comprising: a chargeable and dischargeable power storage device; a power line configured to be capable of supplying and receiving the electric power between the power supply system and said load device; a converter arranged between said power storage device and said power line for performing voltage conversion between said power storage device and said power line; a chargeable and dischargeable power storage unit connected to said power line; a control device controlling said converter by setting a predetermined target value; and a voltage sensor sensing a voltage on said power line, wherein during temperature rise control for raising a temperature of at least one of said power storage device and said power storage unit, said control device sets said target value such that said converter passes the electric power from said power storage device through said power line to said power storage unit when the voltage sensed by said voltage sensor reaches a lower limit value, and sets said target value such that said converter passes the electric power from said power storage unit through said power line to said power storage device when said sensed voltage reaches an upper limit value.