The invention provides a high-voltage interlocking signal detection circuit and method and a motor controller. An active high-voltage interlocking safety detection circuit is additionally arranged inthe motor controller of a new energy automobile. When high-voltage interlocking failure occurs to the motor controller, on one hand, torque output can be cut off quickly to guarantee personnel safety,and on the other hand, fault information can be reported to a VCU, a BMS and the like to facilitate troubleshooting. Furthermore, in the technical scheme provided by the invention, the high-voltage interlocking safety problem is completely detected by the controller, and the acquisition and processing of all signals come from the inside of the controller and do not depend on other external controllers. Therefore, the scheme is better in application adaptability and stronger in expansibility. The scheme can also be popularized to other high-voltage devices and low-voltage devices of the new energy automobile, and is used for detecting the interlocking safety of the new energy automobile.

    本发明提供了一种高压互锁信号检测电路及方法和电机控制器,通过在新能源汽车的电机控制器中增加主动高压互锁安全检测电路。当电机控制器发生高压互锁失效时,一方面可以迅速切断扭矩输出,保证人员安全,另一方面可以将故障信息报给VCU、BMS等,方便排查故障。此外,在本发明提供的技术方案中,高压互锁安全问题完全由控制器自身检测,所有信号的采集和处理都来自控制器内部,而不依赖于外部其它控制器。因此,该方案的应用适应性更好,扩展性更强。这种方案还可以推广到新能源汽车的其它高压装置以及低压装置上,用于自身互锁安全的检测。


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    Title :

    High-voltage interlocking signal detection circuit and method and motor controller


    Additional title:

    一种高压互锁信号检测电路及方法和电机控制器


    Contributors:
    WANG XIAOLONG (author) / JI XIAOYONG (author) / SHEN JIAN (author)

    Publication date :

    2020-04-21


    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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