Patent ID: 8085051

Claim:
An abnormality detecting device for a storage element, characterized by comprising: an equalization process portion that eliminates a variance of states of charge of a plurality of storage portions including at least one storage element so as to make the states of charge of the plurality of storage portions equal; an abnormality determination portion that determines an abnormality in the respective storage portions; a voltage measurement portion that measures voltages across terminals of the respective storage portions; and a control portion that obtains the voltages across the terminals of the respective storage portions from the voltage measurement portion and controls an equalization process by the equalization process portion and an abnormality determination process by the abnormality determination process portion on the basis of the voltages across the terminals of the respective storage portions, wherein: the control portion has a calculation portion that calculates an abnormality determination value used in the abnormality determination process on the basis of an amount of change of the voltages across the terminals of the respective storage portions that have been allowed to stand since an end of the equalization process on the respective storage portions; and the abnormality determination process portion has a determination portion that performs an abnormality determination from the abnormality determination value.