| 摘要 |
PROBLEM TO BE SOLVED: To suitably determine the abnormality of each current sensor in an abnormality determination device applied to a power source system including a plurality of current sensors.SOLUTION: By consecutively integrating currents detected by a first current sensor 51, a first changing amount is calculated as the changing amount of the residual capacity of a storage battery 30. Similarly, from the detection result of a second current sensor 52, a second changing amount is calculated as the changing amount of the residual capacity of the storage battery 30. During the period of calculating the first and second changing amounts, from the voltage of the storage battery 30 at the start of the period and the end of the period, the changing amount of the residual capacity of the storage battery 30 is calculated as a third changing amount. The first and third changing amounts are compared with each other, and the second and third changing amounts are compared with each other. When only one of the comparison results shows noncoincidence, the first current sensor 51 is determined to be abnormal if the first and third changing amounts do not coincide with each other, and the second current sensor 52 is determined to be abnormal if the second and third changing amounts do not coincide with each other. |
