Electric Vehicle and Control Method of the Same

摘要

In response to a decrease in observed battery voltage Vb to or below a preset threshold value Vs 1 , the control procedure of the invention closes the gates of an inverter for an air conditioner to stop a supply of electric power to the air conditioner (at a time point t 1 ). In response to a further decrease in observed battery voltage Vb to or below a preset threshold value Vm 1 , the control procedure closes the gates of inverters for motors MG 1 and MG 2 to stop supplies of electric power to the motors MG 1 and MG 2 (at a time point t 2 ). The threshold values Vs 1 and Vm 1 are set to keep the battery voltage Vb at or above a minimum required voltage for proper operations of an electric power steering (EPS). This arrangement guarantees the minimum required voltage for proper operations of the EPS and accordingly ensures the stable steering performance even in the event of a voltage decrease of the battery.