Power conversion device and manufacturing method of power conversion device

A manufacturing method of a power conversion device, the manufacturing method comprising:

• housing a capacitor in a capacitor housing portion of a case, and housing, on both sides of a partition portion of the case, a first power semiconductor module and a second power semiconductor module each having an input terminal or an output terminal protruding from one surface in a semiconductor module housing portion of the case provided with the partition portion;
• and
• disposing, on the one surface of the first power semiconductor module and the second power semiconductor module, a connection member in which a resin portion and a connection conductor are integrally provided, and the connection conductor has a capacitor connection portion connected to the capacitor and has a first terminal portion exposed from the resin portion and connected to the terminal of the first power semiconductor module and a second terminal portion connected to the terminal of the second power semiconductor module, wherein
• the partition portion is provided with a protruding portion that protrudes toward the connection member further than the one surface of the first power semiconductor module and the second power semiconductor module and is thermally coupled to the connection member, and
• the disposing the connection member on the one surface of the first power semiconductor module and the second power semiconductor module includes disposing the protruding portion between a first root portion of an exposed portion where the first terminal portion is exposed from the resin portion and a second root portion of an exposed portion where the second terminal portion is exposed from the resin portion, and thermally coupling the protruding portion to the connection member.