The embodiment of the invention provides a cooling abnormity identification method for a vehicle power module, and relates to the field of electric vehicles. The method comprises the following steps: acquiring burying point data of a plurality of vehicles; according to the electric drive signal of each vehicle and the driving state signal of each vehicle, determining an actual temperature parameter of each vehicle and a data characteristic time sequence of each vehicle; obtaining an electric drive fitting curve characteristic table of each vehicle; according to the preset electric drive working condition parameters of each vehicle, the electric drive fitting curve characteristic table of each vehicle is adopted for temperature parameter fitting, and reference temperature parameters of each vehicle are obtained; and according to the reference temperature parameter, the actual temperature parameter and the data characteristic time sequence of each vehicle, performing cooling abnormity identification on the power module in each vehicle to obtain a cooling abnormity risk parameter. According to the method, the cooling abnormity identification speed of the vehicle power module can be improved under large-scale train number data, and the anti-interference capability, precision and stability are improved.

    本申请的实施例提供了一种车用功率模块的冷却异常识别方法,涉及电动汽车领域。该方法包括:获取多个车辆的埋点数据;根据每个车辆的电驱信号和每个车辆的驾驶状态信号,确定每个车辆的实际温度参数以及每个车辆的数据特征时间序列;获取每个车辆的电驱拟合曲线特性表;根据每个车辆的预设电驱工况参数,采用每个车辆的电驱拟合曲线特性表进行温度参数的拟合,得到每个车辆的参考温度参数;根据每个车辆的参考温度参数、实际温度参数以及数据特征时间序列,对每个车辆中的功率模块进行冷却异常识别,得到冷却异常风险参数。本申请可在大批量车次数据下,既提高车用功率模块的冷却异常识别速度,又提高了抗干扰能力、精度以及稳定性。


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    Title :

    Cooling abnormity identification method for vehicle power module


    Additional title:

    一种车用功率模块的冷却异常识别方法


    Contributors:
    PENG GAN (author) / WANG XIAOXU (author) / YANG LIANG (author) / FANG MEINA (author) / LI LINGZHOU (author) / CHEN XIAOJIAO (author)

    Publication date :

    2024-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G01K MEASURING TEMPERATURE , Messen der Temperatur / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze



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