POWER CONVERSION DEVICE AND COOLING STRUCTURE

To efficiently cool a plurality of electronic components whose heating values in a sealed container are different.SOLUTION: A power conversion device 1 according to the present invention has a sealed container 10, coolant 20 in a gas-liquid two-phase state filled in the sealed container 10, and electronic components 31 and 32 arranged within liquid phase coolant 21 in the sealed container 10. The sealed container 10 has a partitioning wall 14 dividing an inner space 11 of the sealed container 10 into housing parts 12 and 13 in a direction intersecting with respect to a liquid surface 21a of the liquid phase coolant 21. One electronic component 31 of the electronic components 31 and 32 is arranged in one housing part 12 of the housing parts 12 and 13, and the other electronic component 32 whose heating value is larger than that of the electronic component 31 of the electronic components 31 and 32 is arranged in the other housing part 13 of the housing parts 12 and 13. The sealed container 10 is configured so that the liquid phase coolant 21 may shift from a side of one housing part 12 to the side of the other housing part 13, and gas phase coolant 22 may shift from the other housing part 13 side to the one housing part 12 side.SELECTED DRAWING: Figure 3 【課題】密封容器内で発熱量の異なる複数の電子部品を効率よく冷却する。【解決手段】本発明に係る電力変換装置１は、密封容器１０と、密封容器１０に充填された気液二相状態の冷媒２０と、密封容器１０内において液相冷媒２１内に配置された電子部品３１，３２と、を備える。密封容器１０は、液相冷媒２１の液面２１ａに対して交差する方向に密封容器１０の内部空間１１を収容部１２，１３に分割する仕切壁１４を有する。電子部品３１，３２のうち一の電子部品３１は、収容部１２，１３のうち一の収容部１２に配置されており、電子部品３１，３２のうち一の電子部品３１よりも発熱量が大きい他の電子部品３２は、収容部１２，１３のうち他の収容部１３に配置されている。密封容器１０は、一の収容部１２の側から他の収容部１３の側へ液相冷媒２１が移動し、他の収容部１３の側から一の収容部１２の側へ気相冷媒２２が移動するように構成されている。【選択図】図３