Hybrid vehicle and control method of the same

A control method of a hybrid vehicle, said hybrid vehicle comprising:

• an internal combustion engine;
• an electric power-mechanical power input output mechanism that is connected to an output shaft of the internal combustion engine and to a drive shaft linked with an axle of said hybrid vehicle and outputs at least part of output power of the internal combustion engine to the drive shaft through input and output of electric power and mechanical power;
• a motor that is capable of inputting and outputting power;
• an accumulator unit that transmits electric power to and from the electric power-mechanical power input output mechanism and the motor;
• and a change gear transmission mechanism having a rotational body that is rotated with rotation of the motor and is supported with a preset clearance, said change gear transmission mechanism positioning a rotation center of the rotational body, converting the output power of the motor by gear change, and transmitting the converted power to the drive shaft,
• said control method comprising the step of:
• in response to a positioning instruction of the rotation center of the rotational body during a stop of rotation of the rotational body of the change gear transmission mechanism without positioning the rotation center of the rotational body, controlling the motor and the change gear transmission mechanism to position the rotation center of the rotational body after rotating the rotational body.

A drive system of driving a drive shaft, comprising:

• a motor that is capable of inputting and outputting power;
• an accumulator unit that transmits electric power to and from the motor;
• a change gear transmission mechanism having a rotational body that is rotated with rotation of the motor and is supported with a preset clearance, said change gear transmission mechanism positioning a rotation center of the rotational body, converting the output power of the motor by gear change, and transmitting the converted power to the drive shaft;
• and
• a positioning control module that, in response to a positioning instruction of the rotation center of the rotational body during a stop of rotation of the rotational body of the change gear transmission mechanism without positioning the rotation center of the rotational body, controls the motor and the change gear transmission mechanism to position the rotation center of the rotational body after rotating the rotational body.