The invention relates to a method for operating a high-voltage on-board electrical system (3) of a vehicle (2), comprising a protection device (8) for coping with human body contact with one of the high-voltage potentials (HV +, HV-) and a reference potential (M) during charging of a high-voltage battery (6) by means of a direct-current charging station (5), the protection device (8) having a voltage measuring device (SV1, SV2), sV2) and a protection circuit (9). According to the invention, at one of the high-voltage potentials (HV +, HV-), a galvanically coupled DC-DC converter (GW) is arranged between the protection device (8) and the DC charging connection, and the charging voltage provided by the DC charging station (5) is lower than the nominal voltage of the high-voltage battery (6). According to the invention, it is determined whether a human body contact with the high-voltage potential (HV +, HV-) in which the DC-DC converter (GW) is arranged occurs between the DC-DC converter (GW) and the DC charging station (5), and this is used as a trigger criterion for actuating a protection circuit (9) and/or a further protection circuit (9) in which the high-voltage potential (HV +, HV-) of the DC-DC converter (GW) is arranged, hV-) and the reference potential (M) are arranged at a position between the DC-DC converter (GW) and the DC charging interface.

    本发明涉及一种运行车辆(2)的高压车载电气系统(3)的方法,该高压车载电气系统具有在通过直流充电站(5)为高压蓄电池(6)充电期间用于应对与其中一个高压电位(HV+,HV‑)和基准电位(M)发生人体接触的保护装置(8),其中,保护装置(8)具有电压测量装置(SV1,SV2)和保护电路(9)。根据本发明,在高压电位(HV+,HV‑)中的一个高压电位中,在保护装置(8)与直流充电接口之间布置有电流耦合的直流‑直流转换器(GW),并且直流充电站(5)提供的充电电压低于高压蓄电池(6)的额定电压。确定与其中布置了直流‑直流转换器(GW)的高压电位(HV+,HV‑)的人体接触是否发生在直流‑直流转换器(GW)和直流充电站(5)之间,并将此用作促动保护电路(9)和/或另一保护电路(9)的触发标准,所述另一保护电路(9)在其中布置了直流‑直流转换器(GW)的高压电位(HV+,HV‑)与基准电位(M)之间布置在直流‑直流转换器(GW)与直流充电接口之间的位置上。


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    Title :

    Method for operating high-voltage on-board electrical system of vehicle


    Additional title:

    用于运行车辆高压车载电气系统的方法


    Contributors:
    BOEHME ULF (author)

    Publication date :

    2025-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen



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