| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a secondary battery system capable of detecting accurately the status of the secondary battery system (state of a secondary battery, abnormality of the secondary battery system or the like). <P>SOLUTION: The secondary battery system 6 is equipped with a dV/dQ calculation means to calculate the value of dV/dQ which is a ratio of a variation amount dV of a battery voltage V of the secondary battery 100 to a variation amount dQ of a power storage amount Q when the power storage amount Q of the secondary battery 100 changes. The secondary battery system 6 detects a state of the secondary battery system 6 utilizing characteristic points which appear on a Q-dV/dQ curve showing the relations of the value of the power storage amount Q and the value of the dV/dQ, or the characteristic points which appear on a V-dV/dQ curve showing the relations of the value of the battery voltage V and the value of the dV/dQ. <P>COPYRIGHT: (C)2011,JPO&INPIT |
