Method for optimizing assistant force of accelerating condition motor of hybrid vehicle

The invention relates to a method for optimizing the assistant force of an accelerating condition motor of a hybrid vehicle. The method comprises the following steps of judging whether a condition of entering or exiting from a motor assistant force mode is satisfied or not so as to trigger or stop the assistant force of the motor; determining an assistant force torque limit value according to an engine external characteristic torque value and a transmission system input end torque limit value; setting a timer and determining an assistant force torque time attenuation coefficient of the motor by utilizing a timing value between triggering and resetting and a characteristic time attenuation characteristic graph of an accelerator pedal aperture checking motor; determining the assistant force load rate of the motor according to a gear shifting mode and an assistance force load graph of the accelerator pedal aperture checking motor; setting a minimum value of a motor torque limit value fed back by a motor controller in real time and a motor driving torque limit value of a power battery as the assistance force torque limit value of an electric-driven system motor; and multiplying the minimum value of the assistance force torque limit value of a driving system motor and the assistance force torque limit value of the electric-driven system motor by the assistance force torque time attenuation coefficient of the motor and the assistance force load rate of the motor, so as to obtain the assistance force demand torque value of the motor.