Dual-motor driving system, gear shift torque control method thereof and vehicle

Abstract

The invention relates to a dual-motor driving system, a gear shift torque control method thereof and a vehicle. A first motor and a second motor are respectively set as a main driving motor and an auxiliary driving motor, and a driving motor and a speed regulating motor; whether a maximum output torque MT provided by the main driving motor can meet a whole vehicle required torque is judged, if themaximum output torque of the driving motor meets the whole vehicle required torque, the torque of the speed regulating motor does not need to be cleared, and meanwhile, the output torque of the driving motor meets the whole vehicle required torque all the time without additional torque control; and if the maximum output torque of the driving motor does not meet the whole vehicle required torque during gear shifting and torque clearing, only the torque of the speed regulating motor needs to be cleared, and meanwhile the driving motor works with the maximum output torque; therefore, in a gear shifting stage, the method can effectively reduce the probability that the two motors are adjusted at the same time and shorten the motor adjusting time, so that the gear shifting time is shortened, the vehicle power is smoother, and the driving comfort is further improved.

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...

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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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