| CPC H05K 7/20936 (2013.01) [H02M 1/123 (2021.05); H02M 7/003 (2013.01); H02M 7/483 (2013.01); H02P 27/06 (2013.01); H05K 7/209 (2013.01)] | 18 Claims |
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1. An inverter comprising: an electric component portion housing an electronic component including a switching module, and a cooling portion integrated with the electric component portion, wherein
the switching module includes:
an insulating layer having, on the upper surface thereof, an electronic circuit including an inverter circuit; and
a heat sink having, at an upper portion thereof, a heat receiving portion joined to a lower surface of the insulating layer and having, at a lower portion thereof, a heat radiation portion,
the cooling portion including an electric conductive cooler forming a refrigerant flow path,
the switching module being attached to the cooler such that the heat radiation portion is exposed to an inside of the cooler through a fitting port, and
the inverter comprises a common mode current suppression structure including an insulating member and being interposed between the heat sink and the cooler to electrically insulate the heat sink and the cooler from each other, wherein
the switching module further includes an insulating case cover covering the insulating layer,
an end portion of the case cover is fitted in the fitting port to form the common mode current suppression structure,
the cooling portion further includes an insulating frame member forming the fitting port, and
the frame member is attached to the cooling portion to form the common mode current suppression structure.
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