POWER CONVERSION DEVICE

To provide a thin power conversion device in which both cooling performance and sealing are attained.SOLUTION: The power conversion device includes: a capacitor which smooths DC power; a plurality of power modules 4 which converts DC power into AC power; a first circuit board 1 on which the plurality of power modules 4 are mounted; a second circuit board arranged to face the first circuit board; a first flow channel forming body 3 which forms a flow channel, through which a coolant is made to flow, together with the surfaces of the first and the second circuit boards; and a second flow channel forming body 27 which forms the flow channel together with the surface of the first circuit board. Thus, both surfaces of each power module 4 are cooled by the coolant.SELECTED DRAWING: Figure 2 【課題】冷却性能とシール性を両立させた電力変換装置の薄型化を提供する。【解決手段】電力変換装置は、直流電力を平滑化するためのキャパシタと、直流電力を交流電力に変換するための複数のパワーモジュール４と、複数のパワーモジュール４が設置される第１回路基板１と、第１回路基板と対向して配置される第２回路基板と、第１回路基板の面と第２回路基板の面と合わせて冷媒を流すための流路を形成する第１流路形成体３と、第１回路基板の面と合わせて流路を形成する第２流路形成体２７と、を備える。パワーモジュール４の両面は、前記冷媒によって冷却される。【選択図】図２