Patent ID: 9487092
Filing Date: 2016-11-08
CPC Classification: B60K,B60L,B60Y,H02K,H02M,H02P,Y02T

Claim Text:
1. A driving device for an in-wheel motor vehicle, which comprises: a plurality of in-wheel motor assemblies incorporated in at least two of a plurality of drive wheels of the vehicle; and a plurality of motor drivers for controlling the respective in-wheel motor assemblies, the motor drivers including a smoothing circuit, an inverter unit and an inverter control unit connected to the inverter unit for directly controlling a switching operation of the inverter unit and a single cooler for cooling the inverter unit and the smoothing circuit; wherein the smoothing circuit includes a capacitor in an input stage and smooths a direct current power supplied from a battery, the inverter unit includes a plurality of driving elements each configured to perform switching so as to convert a direct current power, inputted thereto via the smoothing circuit, into a three phase alternating current through an intermittent control of the driving elements, the inverter control unit includes the cooler is in the form of a water cooling type and has a plate shape or a thin box-like shape, the plurality of the motor drivers are disposed within a single common casing and, the plurality of the motor drivers all commonly share the first calculator of the inverter control unit and the capacitor of the smoothing circuit which are component parts of those motor drivers, and a main body, including the inverter control unit and the inverter unit, is disposed on one side of the single cooler with the inverter unit held at a position close to a cooling surface of the single cooler.