The invention provides a vehicle-mounted power supply circuit, a vehicle-mounted terminal and a vehicle, and relates to the technical field of electronic circuits. The vehicle-mounted power supply circuit comprises a first voltage conversion circuit and an ignition switch circuit, the first voltage conversion circuit is used for converting voltage output by a power supply into target voltage, and the target voltage is used for supplying power to a load; the first input end of the ignition switch circuit is used for receiving an ignition switch signal output by an ignition switch, the output end of the ignition switch is connected with the enabling end of the first voltage conversion circuit, and the ignition switch circuit is used for controlling the conducting state of the first voltage conversion circuit according to the ignition switch signal; and when the ignition switch signal represents that the ignition switch is switched off, the ignition switch circuit controls the first voltage conversion circuit to be switched off. The problems that when an ignition switch of an existing vehicle is switched off, a power supply circuit still continues to work, electric energy stored in a vehicle-mounted battery is continuously consumed, and the vehicle-mounted battery is prone to being damaged are solved.

    本申请提供一种车载供电电路、车载终端及交通工具,涉及电子电路的技术领域。该车载供电电路,包括:第一电压转换电路、点火开关电路,第一电压转换电路用于将电源输出的电压转换为目标电压,目标电压用于为负载供电;点火开关电路的第一输入端用于接收点火开关输出的点火开关信号,点火开关的输出端与第一电压转换电路的使能端连接,点火开关电路用于根据点火开关信号,控制第一电压转换电路的导通状态,其中,在点火开关信号表征点火开关断开时,点火开关电路控制第一电压转换电路断开。以解决现有的车辆的点火开关断开时,供电电路仍会继续工作,导致车载电池存储的电能持续消耗,容易导致车载电池损坏的问题。


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    Title :

    Vehicle-mounted power supply circuit, vehicle-mounted terminal and vehicle


    Additional title:

    一种车载供电电路、车载终端及交通工具


    Contributors:
    WANG YANPING (author) / ZHOU ZHEYU (author) / QIU YONG (author)

    Publication date :

    2023-08-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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