ABNORMALITY DETECTION APPARATUS, HYBRID VEHICLE, ABNORMALITY DETECTION METHOD, AND PROGRAM

摘要

Provided are an abnormality detection apparatus that can appropriately detect temperature sensor abnormality, a hybrid vehicle, an abnormality detection method, and a program. A hybrid ECU (18; abnormality detection apparatus) includes: a heat amount calculation means that calculates the amount of heat generated in a predetermined time by a main circuit element of an inverter (14) as an object of temperature detection by a temperature sensor (19); a temperature change calculation means that calculates the amount of change in temperature of the main circuit element of the inverter (14) in the predetermined time; a coordinate value calculation means that calculates coordinate values in a coordinate system in which information about the amount of heat calculated by the heat amount calculation means is expressed by one coordinate axis and in which information about the amount of change in temperature of the temperature sensor (19) that is calculated by the temperature change calculation means is expressed by another coordinate axis; and an abnormality detection means that detects abnormality in the temperature sensor (19) when the coordinate values calculated by the coordinate value calculation means are contained in a predetermined abnormality detection determination area in the coordinate system continuously for a certain time.