Patent ID: 7617896
Filing Date: 2009-11-17
Classification: B60K,B60L,B60W,Y02T,Y10T

Abstract:
1. A control device for an electric vehicle arranged such that a driving force of an electric motor can be transmitted to driving wheels of the vehicle through a transmission capable of being shifted, by means of a shift mechanism, from a neutral state to a start-up speed stage selected state in which a speed stage for start-up of the vehicle has been selected, comprising: a speed stage detection means for detecting speed stage selected in the transmission; and a control means which, on a request for a shift from the neutral state to the start-up speed stage selected state, performs a shift from the neutral state to the start-up speed stage selected state by controlling the shift mechanism, and if it is judged based on a detection result fed by the speed stage detection means that the shift to the start-up speed stage selected state is not completed within a first specified time, the control means performs a rotating position control in which the electric motor is controlled to produce a predetermined minute torque in forward and backward rotation directions of the electric motor, alternately, and a speed change gear of the speed stage for start-up of the vehicle is caused to oscillate in a rotation direction by the minute torque being transmitted to an input shaft of the transmission.