Patent ID: 8552604
Filing Date: 2013-10-08
Classification: B62D,H01L,H02K,H02M

Abstract:
1. A drive unit of an electric motor, which has a rotor rotatable relative to a stator, for rotating and driving the rotor relative to the stator, the drive unit comprising: a power module formed by inserting a plurality of power transistors, which supply a drive current to a coil wound around the stator or the rotor, and wirings connecting the power transistors in a resin, which is formed in the shape of a plate, by resin molding; and an electronic component provided in a board thickness direction of the power module and electrically connected with the wirings of the power module, wherein: the power transistors and the wirings connecting the power transistors are arranged on a same plane; the electronic component has lead wires extending from a main body thereof; and the lead wires pass through the power module in the board thickness direction of the power module and are electrically connected with the wirings of the power module inside holes formed on a side of the power module opposite to the main body of the electronic component.