Patent ID: 7881086
Filing Date: 2011-02-01
Classification: H01L,H02M

Abstract:
1. A power conversion device comprising: a first semiconductor element connected between an AC terminal and a positive terminal of a DC power source and that constitutes a positive side arm, and a second semiconductor element connected between the AC terminal and a negative terminal of the DC power source and that constitutes a negative side arm, power conversion being performed between the DC power source and the AC terminal by turn-on/off operation of the semiconductor element; a first cooling plate on which the semiconductor element constituting the positive side arm is mounted; a second cooling plate disposed in parallel to the first cooling plate so that a mount surface thereof is set in the same direction as the first cooling plate and both cooling plates are laid overlapping each other; and a laminated bus bar that connects the semiconductor element constituting the positive side arm and the DC power source, connects the semiconductor element constituting the negative side arm and the DC power source, connects the semiconductor element constituting the positive side arm and the semiconductor element constituting the negative side arm, and includes laminated electrically conductive bus bars with an insulating material sandwiched therebetween.