Patent ID: 7872448
Filing Date: 2011-01-18
Classification: H01M,H02J,Y02E

Abstract:
1. A power supply system for supplying portable equipment with electric power, comprising: a notification portion; a power supply for supplying electric power to at least the notification portion, the power supply including a lithium-ion secondary battery; a temperature detection portion for detecting a temperature of the power supply; a voltage detection portion for detecting a voltage of the power supply; a memory portion for storing a first temperature, a first voltage and a second voltage that is smaller than the first voltage; and a forced discharge portion for recognizing an abnormality of the power supply when the temperature of the power supply detected by the temperature detection portion is not lower than the first temperature and the voltage of the power supply detected by the voltage detection portion is not lower than the first voltage when a power feed from the power supply to the portable equipment for operation of the portable equipment is off, for forcedly discharging the power supply until the voltage of the power supply detected by the voltage detection portion reaches the second voltage, and for electrifying the notification portion by the power supply, thereby making the notification portion continuously notify a message indicating that the abnormality is being avoided while the power supply is forcedly being discharged, wherein the forced discharge portion includes a control portion configured to make the memory portion store data indicating that forced discharge has completed when the forced discharge completed, and the control portion is further configured to make the notification portion notify a message indicating that the abnormality has been avoided based on the data indicating that the forced discharge is completed, when the power feed from the power supply to the portable equipment for operation of the portable equipment becomes turned on.