Vehicle and method and system for treating failure of motor driving system thereof

Abstract

The invention discloses a method for treating a failure of a motor driving system of a vehicle. The method includes the steps that when the failure occurs on the motor driving system, operation of thecorresponding motor driving system is temporarily stopped; detailed failure parameters of the motor driving system with the failure are detected; whether all the detailed failure parameters belong topreset key failure list items or not is judged, and if yes, corresponding preset failure-excluding operation is executed separately; if not, the corresponding motor driving system is made to recoveroperation again. In this way, with the method, the motor driving system with the failure can recover rapidly to be normal, and it is avoided that other motor driving systems are in a high-load workingstate for a long term; it is unnecessary to power on or off the complete vehicle, continuous operation of the motor driving system can be kept as far as possible, loads of all the motor driving systems are balanced, and complete-vehicle power output is kept balanced. The invention further discloses a system for treating the failure of the motor driving system of the vehicle and the vehicle, and the advantages are as mentioned above.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a fault handling method for a motor drive system of a vehicle. The present invention also relates to a fault processing system of a motor drive system of a vehicle and a vehicle including the above fault processing system of a motor drive system. Background technique [0002] With the development of China's machinery industry, more and more machinery and equipment have been widely used. [0003] In the vehicle industry, pure electric vehicles and hybrid vehicles (hereinafter referred to as "hybrid vehicles") have gradually appeared in the market in order to save energy and reduce emissions and improve energy utilization. A motor drive system is provided on a pure electric vehicle or a hybrid vehicle, which is used (together with the engine) to provide driving force for the driving wheels. [0004] After the motor drive system has been running for a long time, it is ...

AI Technical Summary

Problems solved by technology

[0005] On two-wheel-drive pure electric or hybrid vehicles, the power system is single, and the handling mechanism of secondary faults has little impact on the whole vehicle, but on four-wheel-drive hybrid or four-wheel pure electric vehicles and other types of new energy vehicles, many For a power system, if one of the motor drive systems immediately stops torque output due to a secondary failure and cannot recover, the load on the other motor drive systems will increase, and work for a long time will inevitably affect the power output of the vehicle and vehicle safety. The driver stops the vehicle and powers off the vehicle and then powers on again to restore the normal operation of each motor drive system. This will cause the motor drive system to fail to operate continuously, the load of some motor drive systems is high, and the power output of the vehicle is unbalanced. Negative Effects

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