The relay diagnosis apparatus according to the present invention comprises: a first voltage detection circuit for generating a first diagnosis voltage at a voltage between a chassis and a positive terminal of a battery assembly; a second voltage detection circuit for generating a second diagnostic voltage at a voltage between the chassis and the negative terminal of the battery assembly; and a controller for determining a first insulation resistance between the positive terminal and the chassis and a second insulation resistance between the negative terminal and the chassis on the basis of a first diagnostic voltage at a first point in time and a second diagnostic voltage at a second point in time when the first relay and the second relay are controlled to be in an off state. The controller determines a third insulation resistance between the positive terminal and the chassis and a fourth insulation resistance between the negative terminal and the chassis on the basis of a first diagnostic voltage at a third point in time and a second diagnostic voltage at a fourth point in time when the first relay and the second relay are controlled to be in an on state. The controller detects a failure of at least one of the first relay and the second relay on the basis of the first to fourth insulation resistors.

    根据本发明的继电器诊断装置包括:第一电压检测电路,用于在底盘与电池组件的正极端子之间的电压下生成第一诊断电压;第二电压检测电路,用于在底盘与电池组件的负极端子之间的电压下生成第二诊断电压;以及控制器,用于在第一继电器和第二继电器被控制处于断开状态时,在第一时间点处的第一诊断电压和第二时间点处的第二诊断电压的基础上,确定正极端子与底盘之间的第一绝缘电阻以及负极端子与底盘之间的第二绝缘电阻。控制器在第一继电器和第二继电器被控制处于接通状态时,在第三时间点处的第一诊断电压和第四时间点处的第二诊断电压的基础上,确定正极端子与底盘之间的第三绝缘电阻以及负极端子与底盘之间的第四绝缘电阻。控制器在第一绝缘电阻至第四绝缘电阻的基础上检测第一继电器和第二继电器中的至少一个的故障。


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    Titel :

    Relay diagnosis device, relay diagnosis method, battery system, and electric vehicle


    Weitere Titelangaben:

    继电器诊断装置、继电器诊断方法、电池系统及电动车辆


    Beteiligte:
    PARK JONG-IL (Autor:in)

    Erscheinungsdatum :

    30.09.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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