Patent ID: 8547040
Filing Date: 2013-10-01
Classification: B60L,Y02T

Abstract:
1. A control apparatus of an electric vehicle, the electric vehicle operable to be driven by supplying electric power from a battery to an electric motor to drive the electric motor and operable to perform regeneration charge to charge the battery by electric power generated by the electric motor using deceleration energy, the control apparatus comprising: a request torque calculating unit calculating a request torque of the electric motor; a motor control unit controlling the electric motor based on the request torque calculated by the request torque calculating unit; and a torque suppression unit suppressing the request torque of the electric motor so that a battery voltage or a battery current does not exceed or fall below a limit level when the electric motor is driven or the regeneration charge is performed, the torque suppression unit storing a torque of the electric motor and a rotational angular speed of the electric motor at a point of time when the battery voltage or the battery current reaches the limit level, the torque suppression unit performing a feed forward control for setting the request torque based on the rotational angular speed of the electric motor so that an integrated value of the torque of the electric motor and the rotational angular speed of the electric motor at time when the electric motor is driven or the regeneration charge is performed is identical to an integrated value of the torque of the electric motor and the rotational angular speed of the electric motor which are stored at the point of time when the battery voltage or the battery current reaches the limit level.