| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery power supply system that can secure safety of a worker at the battery change or maintenance of a battery power supply device mounted on a device containing a secondary battery or at the work of moving or removing a large device body, and that can secure a preservation state of not prompting battery deterioration at the time of device stop.SOLUTION: A battery power supply system comprises: means for detecting the SOC of a secondary battery; control means for controlling charging and discharging; and means for communicating with a device driven by the secondary battery. If the battery power supply system has received a signal, indicating that the device will stop for a long time, from the device driven by the secondary battery, it stops input from a charger, and controls discharging so that the SOC will be equal to or less than a prescribed SOC value, and after the SOC has reached the prescribed SOC value or less, it stops input and output. |
