The invention discloses a detection method, a detection circuit and a detection device of a high-voltage contactor and an electric vehicle. The method comprises the steps that in response to a detection instruction, a detection circuit is connected with the high-voltage contactor, the detection instruction is used for indicating detection of the state of the high-voltage contactor included in the electric automobile, and the detection circuit is a mirror image source circuit; determining a first voltage value at two ends of the high-voltage contactor and a first current value flowing through the high-voltage contactor based on the detection circuit; determining the impedance of the high-voltage contactor according to the first current value and the first voltage value; and determining that the state corresponding to the impedance of the high-voltage contactor is the state of the high-voltage contactor according to a predetermined corresponding relation between the impedance of the high-voltage contactor and the state of the high-voltage contactor. According to the invention, the technical problem of low efficiency of detecting the state of the high-voltage contactor caused by lack of a simple and practical detection method for the high-voltage contactor in the prior art is solved.

    本发明公开了一种高压接触器的检测方法、检测电路、检测装置和电动汽车。其中,该方法包括:响应于检测指令,将检测电路与高压接触器连接,其中,检测指令用于指示检测电动汽车包括的高压接触器的状态,检测电路为镜像源电路;基于检测电路,确定高压接触器两端的第一电压值和流过高压接触器的第一电流值;根据第一电流值和第一电压值,确定高压接触器的阻抗;根据预先确定的高压接触器的阻抗与高压接触器的状态的对应关系,确定高压接触器的阻抗对应的状态为高压接触器的状态。本发明解决了由于现有技术中缺乏简单实用的高压接触器的检测方法造成的检测高压接触器状态的效率低的技术问题。


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    Title :

    Detection method, detection circuit and detection device of high-voltage contactor and electric vehicle


    Additional title:

    高压接触器的检测方法、检测电路、检测装置和电动汽车


    Contributors:
    HU QINGSONG (author) / HU PANPAN (author) / JI XUEBIN (author) / CHENG HAO (author)

    Publication date :

    2023-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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