The invention discloses an insulation fault positioning system and method for a multi-axle new energy vehicle, and belongs to the technical field of vehicle insulation fault positioning. The high-voltage distribution box is connected with a power battery pack and is provided with a motor controller, a power unit, inter-box interconnection and a plurality of auxiliary interfaces; a main positive relay and a plurality of functional relays are arranged in the high-voltage distribution box; the functional relays are connected in parallel and then form a series loop with the power battery pack and the main positive relay; the motor controller, the power unit, the inter-box interconnection and each auxiliary interface are respectively connected with one function relay; the high-voltage distribution boxes are connected through inter-box interconnection interfaces; and an insulation detection device is arranged in the power battery pack and is used for detecting insulation faults of the power battery pack and the high-voltage distribution box. According to the invention, the time for simultaneous insulation diagnosis and positioning of a plurality of distribution boxes and electrical systems thereof is shortened, and further fault diagnosis and positioning of other electrical systems can be continuously completed when a certain group of battery packs fails.

    本发明一种多轴新能源车辆绝缘故障定位系统及方法,属于车辆绝缘故障定位技术领域,所述系统包括至少两个高压配电箱;高压配电箱连接有动力电池包,且设有电机控制器、动力单元、箱间互联及若干辅助接口;高压配电箱内有主正继电器和若干功能继电器;各功能继电器并联后与动力电池包及主正继电器形成串联回路;电机控制器、动力单元、箱间互联及各辅助接口分别与一个功能继电器连接;高压配电箱之间通过箱间互联接口连接;动力电池包内设有绝缘检测装置,对动力电池包及高压配电箱的绝缘故障进行检测。本发明缩短对多个配电箱及其电气系统同时绝缘诊断定位的时间,并当某组电池包故障时,可以继续完成对其他电气系统的进一步故障诊断定位。


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    Title :

    Multi-axle new energy vehicle insulation fault positioning system and method


    Additional title:

    一种多轴新能源车辆绝缘故障定位系统及方法


    Contributors:
    ZHU MINGHUI (author) / LIU XINGBO (author) / XUE YUNHONG (author) / LI RUICHEN (author) / CUI QI (author)

    Publication date :

    2024-02-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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