| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a highly-reliable power storage device capable of estimating at high speed a both terminal voltage of a power storage element having an abnormal value. <P>SOLUTION: This device has a constitution wherein a power storage element voltage detection circuit 33 is connected to a power storage element module 29 comprising a plurality of power storage elements 31. During a starting time, if each both terminal voltage value of the power storage elements 31 determined through the power storage element voltage detection circuit 33 has an initial abnormal value, a control part 41 uses a mean value (H) of initial normal values of each both terminal voltage value as the both terminal voltage value in place of the initial abnormal value. During an ordinary using time, if each both terminal voltage value determined through the power storage element voltage detection circuit 33 has an abnormal value, the control part 41 determines an average changing rate (D) between a both terminal voltage value measured in the preceding time and a both terminal voltage value measured in this time of the power storage element 31 having a normal value, and uses a value determined by multiplying the both terminal voltage value measured in the preceding time of the power storage element 31 having the abnormal value by the average changing rate (D), as the both terminal voltage value in place of the abnormal value. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
