The invention relates to a vehicle (4) having a high-voltage on-board electrical system (3) with a traction battery (5), a charging interface (6) for coupling a DC charging station (2), a high-voltage potential line (HV + L, HV-L) and a reference potential line (ML). According to the invention, a direct current-direct current converter (7) is arranged in one of the high-voltage potential lines (HV + L, HV-L) and a series circuit comprising a varistor (8) and a current measuring device (9) is arranged between the other high-voltage potential line (HV + L, HV-L) and the reference potential line (ML), and when the current intensity measured by the current measuring device (9) exceeds at least one specified limit value, the varistor (8) and the current measuring device (9) are connected to the reference potential line (ML). A processing unit (10) coupled to the current measuring device (9) and the DC-DC converter (7) turns off the DC-DC converter (7); or a respective DC-DC converter (7) is arranged in the two high-voltage potential lines (HV + L, HV-L) and a respective series circuit comprising a varistor (8) and a current measuring device (9) is arranged between each high-voltage potential line (HV + L, HV-L) and the reference potential line (ML), wherein a processing unit (10) coupled to the respective current measuring device (9) and the DC-DC converter (7) switches off the DC-DC converter (7) when the current intensity measured by at least one of the current measuring devices (9) exceeds at least one specified limit value.

    本发明涉及一种具有高压车载电气系统(3)的车辆(4),该高压车载电气系统具有牵引用蓄电池(5)、直流充电站(2)耦合用充电接口(6)、高压电位线(HV+L,HV‑L)和基准电位线(ML)。根据本发明,在其中一条高压电位线(HV+L,HV‑L)中布置直流‑直流转换器(7),并在另一高压电位线(HV+L,HV‑L)和基准电位线(ML)之间布置包括变阻器(8)和电流测量装置(9)的串联电路,其中当由电流测量装置(9)测得的电流强度超过至少一个指定的极限值时,与电流测量装置(9)和直流‑直流转换器(7)耦合的处理单元(10)会关断直流‑直流转换器(7);或者在两条高压电位线(HV+L,HV‑L)中布置相应的直流‑直流转换器(7),并在每条高压电位线(HV+L,HV‑L)和基准电位线(ML)之间布置包括变阻器(8)和电流测量装置(9)的相应的串联电路,其中当由电流测量装置(9)中的至少一个电流测量装置测得的电流强度超过至少一个指定的极限值时,与相应的电流测量装置(9)和直流‑直流转换器(7)耦合的处理单元(10)会关断直流‑直流转换器(7)。


    Access

    Download


    Export, share and cite



    Title :

    Vehicle having high-voltage on-board electrical system and method for operating high-voltage on-board electrical system


    Additional title:

    具有高压车载电气系统的车辆和运行高压车载电气系统的方法


    Contributors:

    Publication date :

    2025-03-11


    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