Inverter device and electric vehicle incorporating same

An inverter device of the present invention includes: an inverter circuit portion that has a plurality of switching elements and that converts direct-current power into alternating-current power; and a temperature detection sensor that detects the temperature of the switching elements, in which, in the inverter circuit portion, a plurality of the switching elements on each of an upper side arm and a lower side arm corresponding to each phase are connected in parallel, and the temperature detection sensor is arranged in an intermediate position between the switching elements connected in parallel.