WORK MACHINE

摘要

Flow paths for a cooling medium are formed in a cooling plate. A power module is attached to the cooling plate and is thermally bonded to the cooling plate. The flow paths include: a first straight flow path that causes the cooling medium to flow in a first direction; a second straight flow path arranged to the side of the first straight flow path, and which causes the cooling medium to flow in a second direction opposite to the first direction; and a curved flow path connected to the first straight flow path and the second straight flow path, that changes the direction of progress for the cooling medium that has flowed along the first straight flow path, and causes same to flow along the second straight flow path. The area of the region where the second straight flow path and the power module overlap is larger than the area of the region where the first straight flow path and the power module overlap. A power conversion device including the cooling plate and the power module is mounted in a work machine.