Patent ID: 8929097
Filing Date: 2015-01-06
Classification: H01L,H02M,H05K

Abstract:
1. A power conversion apparatus comprising: electronic components that form at least part of a power conversion circuit; a cooler for cooling at least part of the electronic components; a case that surrounds and encloses the electronic components and the cooler; and a frame that is attached to an interior of the case, wherein the at least part of the electronic components and the cooler are fixed to and integrated with the frame to form an internal unit, the frame has such a shape that the at least part of the electronic components and the cooler are surrounded by the frame from four sides, the internal unit includes semiconductor modules, which incorporate switching elements, as the electronic components, the cooler includes coolant passages, the internal unit incorporates a stacked body in which the coolant passages and the semiconductor modules are stacked alternately, the internal unit includes a pressure member for pressing the stacked body in a stacking direction, the frame includes a front wall section and a rear wall section located on both sides in the stacking direction of the stacked body, and a pair of side wall sections joining the front and rear wall sections at both ends thereof, the pressure member is interposed between the rear wall section and a rear end in the stacked direction of the stacked body whose front end in the stacked direction is supported by the front wall section, and the thickness of the rear wall section is larger than the thicknesses of the side wall sections.