New energy automobile motor starting abnormity fault detection method and system

The invention belongs to the technical field of new energy automobile fault detection, and particularly relates to a new energy automobile motor starting abnormal fault detection method and system. Vehicle starting operation data are collected by constructing a time window, and then safety factor indexes in the collected data are extracted; confirmation of the safety factor indexes can serve as parameters for judging abnormal starting of the vehicle, then variance processing, integral processing, speed filtering processing and mean filtering processing are carried out on the extracted safety factor indexes, and a risk accumulation value and a risk accumulation speed value when the vehicle is started are obtained. And finally, judging whether the risk accumulation value, the risk accumulation speed value, the speed filtering processing result and the mean filtering processing result are within a preset risk threshold range or not to obtain risk judgment of the vehicle. According to the invention, rapid fault d