The invention provides a vehicle-mounted high-voltage PTC control circuit. The vehicle-mounted high-voltage PTC control circuit comprises a switching tube Q, an inductor L, a diode D and a capacitor C, the first end of the switching tube Q is connected with an input power supply; one end of the inductor L is connected with the second end of the switching tube Q, and the other end of the inductor L is used for connecting one end of the vehicle-mounted high-voltage PTC and one end of the capacitor C; the negative electrode of the diode D is connected with the second end of the switching tube Q and one end of the inductor L. The positive electrode of the diode D is connected with the grounding end, the other end of the capacitor C and the other end of the vehicle-mounted high-voltage PTC. The PTC is controlled by the control circuit, stable voltage can be effectively output, the change rate of voltage and current is more controllable, after the voltage is stabilized by the control circuit, the change of the voltage and the current becomes smooth, and generation of electromagnetic radiation is effectively reduced. After the voltage is stabilized, the current in the grounding loop is more stable, and the stable grounding current can reduce the generation of noise voltage, thereby reducing the influence of electromagnetic radiation on the system.

    本发明提供一种车载高压PTC控制电路,包括开关管Q、电感L、二极管D、电容C。开关管Q的第一端用于连接输入电源;电感L的一端连接开关管Q的第二端,电感L的另一端用于连接车载高压PTC的一端和电容C的一端;二极管D的负极连接开关管Q的第二端及电感L的一端,二极管D的正极连接接地端、电容C的另一端以及车载高压PTC的另一端。通过本发明的控制电路来控制PTC可以有效地输出稳定的电压,电压和电流的变化率更加可控,控制电路将电压稳定化后,电压和电流的变化变得平滑,有效地减少了电磁辐射的产生。电压稳定后,接地回路中的电流也会更加稳定,稳定的接地电流可以减少噪声电压的产生,从而降低了电磁辐射对系统的影响。


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    Title :

    Vehicle-mounted high-voltage PTC control circuit


    Additional title:

    一种车载高压PTC控制电路


    Contributors:
    WANG HUI (author) / SHI JIALI (author) / FU SHENGGAO (author) / CHEN LEI (author) / NIU JINGBIN (author) / ZHANG ZHEN (author)

    Publication date :

    2025-03-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR




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