Patent ID: 9007767
Filing Date: 2015-04-14
Classification: H01L,H02M,H05K

Abstract:
1. A power inverter comprising: a metallic chassis having a containing space at an inner portion thereof, having a lid on one side in a vertical direction, other side thereof being enclosed by a bottom; a cooling block forming a coolant path on a side of the bottom in the vertical direction of the chassis along a side portion of the inner portion of the chassis; a plurality of power semiconductor modules each incorporating a semiconductor chip for configuring an inverter circuit of converting a direct current (DC) power into an alternate current (AC) power, a direct current terminal for making a current flow to the semiconductor chip and a control terminal for controlling an operation of the semiconductor chip being provided to be protruded to an outer portion; a capacitor module arranged on a center side relative to a coolant path formed along the side portion of the chassis and including a direct current terminal; an alternate current busbar assembly arranged on a side of the lid in the vertical direction of the chassis relative to the capacitor module and the coolant path; and a driver circuit arranged on the lid side in the vertical direction relative to the alternate current busbar assembly; wherein the respective power semiconductor modules are fixed to the cooling block in a state of being inserted into the coolant path; and wherein the alternate current busbar assembly includes a plurality of alternate current bus bars for making alternate currents generated by the respective power semiconductor modules flow and a plurality of fixing portions for fixing the alternate current busbar assembly, the plurality of alternate current bus bars configure a shape of extending along the coolant path, and the alternate current busbar assembly is fixed by the plurality of fixing portions.