| 摘要 |
A cooling structure of a power semiconductor element is provided with a cooling water channel (26) and a plurality of fins (22). In the cooling water channel (26), cooling water for cooling the power semiconductor element flows. The fins (22) are arranged on the cooling water channel (26) at intervals in a direction orthogonally intersecting with the flow direction of the cooling water. The fins (22) promote heat exchange between the power semiconductor element and the cooling water. The fins (22) have ends (41) facing the upstream of the cooling water flow. The end (41) of at least one fin (22) among the fins (22) is arranged by being shifted to the upstream of the cooling water flow from the end (41) of the adjacent fins (22) on the both sides of the fin (22). Thus, the cooling structure of the power semiconductor element having excellent cooling efficiency and an inverter are provided. |
