To provide a storage battery discharge termination controller which can prevent malfunction due to inrush current at the time of starting a device to be fed.
A refrigerating chamber 8 is cooled by converting the AC power 1 of a power system into direct current, charging it in a storage battery 3 with a charging circuit 2, increasing the voltage with a booster circuit 5, converting it into AC power with an inverter circuit 6, and feeding it in a compressor 7. A feeding control part 13 outputs an output cutoff control signal to the inverter circuit 6 by detecting the terminal voltage of the storage battery 3 at a voltage detection part 4, calculating discharge depth with a discharge depth calculation part 11, and discriminating whether or not it is lower than the discharge depth which indicates discharge termination with a discharge depth discrimination part 12. While operation start indication from an operation indication part 9 or a signal communication part 10 is detected with a operation indication and communication detection part 15 for starting. Current unstable time is counted by a timer 16, and during that time, a feeding termination preventive part 14 makes ineffective output cut-off control from the feeding control part 13 to the inverter circuit 6.
YAMADA KOJI
NARITA TAKAYASU
