ABNORMALITY DETECTION SYSTEM OF ELECTRIC POWER SUPPLY, ABNORMALITY DETECTION DEVICE AND ABNORMALITY DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an abnormality detection system of an electric power supply, in which the increase of the number of components is suppressed.

SOLUTION: The abnormality detection system of the electric power supply is mounted on a vehicle, and a plurality of power storage elements are connected in series therein. The abnormality detection system includes a voltage sensor for detecting a voltage of the power storage element and a controller for calculating respective voltage fluctuation amounts of at least two power storage elements during a prescribed period to detect the abnormality of the power storage elements by comparing the voltage fluctuation amounts between the power storage elements. The abnormality of the electric power supply can be detected by only the detection values by the voltage sensor, and a reduction of the number of components can be facilitated and also the erroneous detection is reducible.

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