Abstract: A method for torque control of a drive motor during gear shifts is disclosed. The method includes sending a plurality of torque reduction commands to the motor control unit during the torque reduction phase of a gear shift. Each of the plurality of torque reduction commands has different step lengths. During the initial period of the torque reduction phase, the torque reduction slope gradually increases. And during the end period of the torque reduction phase, the torque reduction slope gradually decreases.

Abstract: A gear shifting method is for use in electric vehicles. The gear shifting method includes a speed adjustment process in which a speed adjustment request is issued to adjust the rotational speed of the drive motor of the electric vehicle, ensuring that the absolute rotational speed difference between the output-side engagement component and the input-side engagement component remains within the range of 10 rpm to 30 rpm when the input-side engagement component and the output-side engagement component of the transmission, driven by the drive motor, are disengaged. The method also includes an engagement process in which an engagement command is issued after the completion of the speed adjustment process, so as to engage the input-side engagement component with the output-side engagement component for gear engagement.

Abstract: A method for controlling a fuel cell system includes (i) performing a low-temperature start-up process of the fuel cell system, (ii) monitoring internal resistance of a fuel cell stack in the fuel cell system, and (iii) determining that the low-temperature start-up process of the fuel cell system is abnormal based on the appearance of an inflection point in the internal resistance of the monitored fuel cell stack.