The invention discloses a vehicle fault diagnosis circuit, a diagnosis method and a vehicle. The vehicle fault diagnosis circuit comprises an auxiliary diagnosis power supply circuit, a high-side sampling circuit, a low-side sampling circuit, a coil loop current detection circuit, a coil, a high-side switch and a low-side switch. The auxiliary diagnosis power supply circuit is connected with the coil loop current detection circuit, and the auxiliary diagnosis power supply circuit is used for controlling the on-off of an auxiliary diagnosis power supply; the coil loop current detection circuit is connected with the first end of the coil, the first end of the coil is connected with the high-side switch, and the coil loop current detection circuit is used for detecting the current of a coil loop; the high-side sampling circuit is connected with the first end of the coil, and the high-side sampling circuit is used for collecting the high-side voltage of the coil; the low-side sampling circuit is connected with the second end of the coil, the second end of the coil is connected with the low-side switch, and the low-side sampling circuit is used for collecting the low-side voltage of the coil.

    本发明公开了一种车用故障诊断电路、诊断方法及车辆。车用故障诊断电路包括辅助诊断电源电路、高边采样电路、低边采样电路、线圈回路电流检测电路、线圈、高边开关以及低边开关;所述辅助诊断电源电路与所述线圈回路电流检测电路连接,所述辅助诊断电源电路用于控制辅助诊断电源的通断;所述线圈回路电流检测电路与所述线圈的第一端连接,所述线圈的第一端与所述高边开关连接,所述线圈回路电流检测电路用于检测线圈回路的电流;所述高边采样电路与所述线圈的第一端连接,所述高边采样电路用于采集线圈高边电压;所述低边采样电路与所述线圈的第二端连接,所述线圈的第二端与所述低边开关连接,所述低边采样电路用于采集线圈低边电压。


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    Title :

    Vehicle fault diagnosis circuit, diagnosis method and vehicle


    Additional title:

    一种车用故障诊断电路、诊断方法及车辆


    Contributors:
    CHEN YING (author) / CHEN LIDA (author) / ZHU ZHENSHENG (author) / XU XINRU (author)

    Publication date :

    2025-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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