| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the certainty of overcharge detection by properly ensuring an opportunity of self-diagnosis for abnormality detection by an overcharge detection device provided on an on-vehicle secondary battery. <P>SOLUTION: When a self-diagnosis trigger is generated at the end of vehicle driving (S100), it is determined whether a cell voltage is in a self-diagnosable voltage range (S110). In the case that it is determined that the number of cases in which the cell voltage is lower than the self-diagnosable voltage range is more than a predetermined number Nth (S150), and that the opportunity for self-diagnosis is missed due to the cell voltage, a request for changing an SOC target value SOCr of the battery in the next vehicle driving is generated (S160). With this structure, it is possible to control the cell voltage in the next vehicle driving within the self-diagnosable voltage range. <P>COPYRIGHT: (C)2010,JPO&INPIT |
