Examination systems for electric vehicle and hybrid electric vehicle

The present invention is able to perform an examination of a motor mounted on EV or HEV (HV) as well as charge and discharge of a battery mounted on EV or HEV (HV), by a single system. The system for examination of an electric vehicle includes a dynamometer (2) coupled to an output shaft (201) of a motor (200), a power supply unit (3) for supplying power to the motor (200) or the dynamometer (2), a motor examination circuit (L1) for supplying the power of the power supply unit (3) to the dynamometer (2) and the motor (200), a battery charge and discharge circuit (L2) connected with a battery (300), for supplying the power of the power supply unit (3) to the battery (300) or discharging the power of the battery (300), and a circuit switching mechanism (4) for switching between the motor examination circuit (L1) and the battery charge and discharge circuit (L2).