A dual-motor drive system and its shift torque control method, and vehicle

Abstract

The invention relates to a dual-motor drive system and its shift torque control method, and a vehicle. The first motor and the second motor are respectively set as a main drive motor and an auxiliary drive motor, and a drive motor and a speed-regulating motor, and the main drive motor is judged Whether the maximum output torque MT provided can meet the required torque of the entire vehicle. If the maximum output torque of the driving motor meets the required torque of the entire vehicle, there is no need to clear the torque of the speed regulating motor, and at the same time, the output torque of the driving motor always meets the required torque of the entire vehicle. , no additional torque control is required; if the maximum output torque of the drive motor does not meet the required torque of the vehicle when shifting and clearing the torque, only the speed regulating motor needs to be cleared at this time, and the drive motor works at the maximum output torque at the same time; therefore, shift gears here stage, this method can effectively reduce the probability of simultaneous adjustment of two motors, reduce the motor adjustment time, thereby reducing the shift time, making the vehicle dynamics smoother, and further improving driving comfort.

Description

technical field [0001] The invention belongs to the technical field of driving control of new energy vehicles, and in particular relates to a dual-motor drive system, a shift torque control method thereof, and a vehicle. Background technique [0002] With the rapid development of the new energy vehicle industry, the pure electric control system has more and more extensive application prospects in the automotive industry. During the process, the torque of the dual motors is cleared and restored. This driving method will increase the shift time, thereby reducing the smoothness and comfort of the vehicle power; The torque clearing and recovery process, in this process, will cause the vehicle torque to be unsatisfactory, resulting in a significant reduction in vehicle power. At the same time, the longer the torque clearing and torque recovery process takes, the longer the torque adjustment time will be, resulting in uneven power output. , poor driving comfort. Contents of the...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the new energy vehicle industry, the pure electric control system has more and more extensive application prospects in the automotive industry. During the process, the torque of the dual motors is cleared and restored. This driving method will increase the shift time, thereby reducing the smoothness and comfort of the vehicle power; The torque clearing and recovery process, in this process, will cause the vehicle torque to be unsatisfactory, resulting in a significant reduction in vehicle power. At the same time, the longer the torque clearing and torque recovery process takes, the longer the torque adjustment time will be, resulting in uneven power output. , poor driving comfort

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