POWER CONVERSION DEVICE

To acquire a power conversion device in which arrangement of a power module and a cooler and arrangement of cooler flow passage have high versatility, and which is therefore compact, and has low cost.SOLUTION: A power conversion device comprises a rectangular parallelepiped power module, a cooling plate and a cooler. The cooler has: a cooling flow passage where a coolant flows along one surface of the cooling plate; a first flow passage hole which is away from the cooling flow passage opposite a power module side from a portion on a first side surface of the cooling flow passage and extends from a third side surface side to a fourth side surface side; a second flow passage hole which is away from the cooling flow passage on the opposite side of the power module side more than a portion on a second side surface side of the cooling flow passage and extends from the third side surface side to the fourth side surface side; a first connection portion connecting the cooling flow passage and the first flow passage hole; and a second connection portion connecting the cooling flow passage and the second flow passage hole. The power module, and at least a part of the first flow passage hole and at least a part of the second flow passage hole are arranged overlapped in the direction vertical to one surface of the cooling plate.SELECTED DRAWING: Figure 2 【課題】パワーモジュールと冷却器の配置及び冷却器の流路の配置の自由度が高く、小型で低コストの電力変換装置を得ること。【解決手段】直方体状のパワーモジュール、冷却板、及び冷却器を備え、冷却器は冷却板の他方の面に沿って冷媒が流れる冷却流路と、冷却流路の第１の側面の側の部分よりもパワーモジュール側とは反対側に冷却流路とは離間し、第３の側面の側から第４の側面の側に延出した第一の流路穴と、冷却流路の第２の側面の側の部分よりもパワーモジュール側とは反対側に冷却流路とは離間し、第３の側面の側から第４の側面の側に延出した第二の流路穴と、冷却流路と第一の流路穴を連結する第一の連結部と、冷却流路と第二の流路穴を連結する第二の連結部とを有し、冷却板の一方の面に垂直な方向に見て、パワーモジュールと、第一の流路穴の少なくとも一部及び第二の流路穴の少なくとも一部とが重なって配置されている。【選択図】図２