Power conversion device with flow conduits for coolant

摘要

A power conversion device includes a power semiconductor module that converts DC current into AC current, a capacitor for smoothing DC power, a first flow conduit defining member for defining a first flow conduit and for defining a first storage space in which the power semiconductor module is housed, and a second flow conduit defining member for defining a second flow conduit and for defining a second storage space in which the capacitor is housed. A first space, in which a vehicle component that is different from the power conversion device is disposed, is defined in a space to the side of the first flow conduit defining member and below the second flow conduit defining member.

主权项

1. A power conversion device, comprising:
a power semiconductor module that converts DC current to AC current; a capacitor that smooths DC power; a first flow conduit defining member that defines a first flow conduit in which coolant flows, and that also defines a first storage space in which the power semiconductor module is housed; a second flow conduit defining member that defines a second flow conduit in which coolant flows, and that also defines a second storage space in which the capacitor is housed; a flow conduit connection portion that connects the first flow conduit and the second flow conduit; and a circuit board comprising a drive circuit portion that drives the power semiconductor module, wherein: a first space, in which a vehicle component that is different from the power conversion device is disposed, is defined in a space to a side of the first flow conduit defining member and below the second flow conduit defining member, the circuit board is defined up to a second space, that is a space above the first flow conduit defining member, and the flow conduit connection portion connects from the lower surface of the second flow conduit defining member to the first flow conduit defining member via the first space.