| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for determining abnormality of a booster circuit or a relay connected to a battery, wherein abnormality occurs in monitoring, without having to provide a special sensor, when cutting off the battery wherein the abnormality occurs in the monitoring and performing standby traveling. <P>SOLUTION: When standby travel is conducted, by reaching a state of not monitoring a slave battery by the occurrence of abnormality in an electronic control unit for the slave battery, an intermediate voltage between a high-voltage-system target voltage VH* and a first low-voltage-system voltage VL* is set as a threshold voltage Vset (S110). When a second low-voltage-system voltage VL2 is larger than the threshold voltage Vset, over a prescribed period or when a high-voltage-system voltage VH is less than the threshold voltage Vset over a prescribed period, it is decided that there is an abnormality by on-fixing occurring, in the slave side booster circuit 65 or in system main relays 66, 67 (S140). <P>COPYRIGHT: (C)2011,JPO&INPIT |
