| 摘要 |
<p>An electric power management system is provided which executes charge and discharge control by detecting a state of charge of a storage battery pack with a high precision and controls charging and discharging of a storage battery system (22) comprising a plurality of storage battery units. A total storage battery unit manager (16) calculates an SOC of all storage battery packs in the storage battery system (22), and controls charging and discharging based on the calculated SOC. When a wait state, where the storage battery system (22) is not charging or discharging, continues for a predetermined period, the SOC is calculated using a correlation relationship between an electromotive force and the SOC, to remove the influence of hysteresis.</p> |
