SWITCH FAILURE DETERMINATION DEVICE, POWER STORAGE DEVICE, AND SWITCH FAILURE DETERMINATION METHOD

摘要

PROBLEM TO BE SOLVED: To prevent deterioration in accuracy of determining the presence or absence of a failure of a switch such as a relay.SOLUTION: The presence or absence of a short-mode failure in an N-th relay 31 is determined on the basis of whether or not an absolute value of a difference between a partial pressure value VKN when an open command signal is applied to the N-th relay 31 with all the relays 31 closed and a partial pressure value VN before the open command signal is applied to the N-th relay 31 is equal to or less than a short-mode failure determination threshold.