| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality determination device, an abnormality determination method, and a battery pack system with which it is possible to suppress an increase in the number of circuit components.SOLUTION: An abnormality determination device according to one embodiment of the present invention determines abnormality in a battery pack having a plurality of cell stacks in which a plurality of battery cells are connected in series and a plurality of connection members for electrically connecting the plurality of cell stacks, the abnormality determination device comprising a capacitor, a detection unit, a charge path selection unit, a discharge path selection unit, and a determination unit. The capacitor is connected in parallel to the cell stack. The detection unit detects a voltage across the capacitor. The charge path selection unit selects a charge path for the capacitor when charging the capacitor. The discharge path selection unit selects a discharge path including the connection member and the capacitor when discharging the capacitor. The determination unit determines abnormality in the battery pack on the basis of a capacitor voltage after the capacitor is discharged.SELECTED DRAWING: Figure 1 |
