The present invention provides a battery charging device mounted in a vehicle, which comprises: a current conversion unit converting alternating voltage inputted from external alternating power into direct voltage to be outputted to a high voltage battery; a charging relay connected between the power conversion unit and the high voltage battery; a resistance and a diode connected to the charging relay in parallel; a voltage sensor detecting sensing voltage which is voltage of an output end of the power conversion unit; and a control unit controlling the charging relay, computing a change amount of the sensing voltage by receiving the sensing voltage, and determining whether the charging relay is failed based on the sensing voltage or the change amount of the sensing voltage. The present invention can accurately determine whether the charging relay is failed even through there is a voltage change of the output end of the battery charging device mounted in a vehicle or the high voltage battery due to internal and external environments.

    본 발명은, 외부의 교류 전원으로부터 입력받은 교류 전압을 직류 전압으로 변환하여 고전압 배터리로 출력하는 전력 변환부와, 전력 변환부 및 고전압 배터리 사이에 연결되는 충전 릴레이와, 충전 릴레이와 병렬 연결되는 저항 및 다이오드와, 전력 변환부의 출력단 전압인 센싱 전압을 검출하는 전압 센서와, 충전 릴레이를 제어하며, 센싱 전압을 입력 받아 센싱 전압의 변화율을 산출하고, 센싱 전압 또는 센싱 전압의 변화율을 기초로 충전 릴레이의 고장 유무를 판단하는 제어부를 포함하는 차량 탑재 배터리 충전 장치를 제공한다.


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    Title :

    APPARATUS FOR CHARGING BATTERY IN VIHICLE


    Additional title:

    차량 탑재 배터리 충전 장치


    Contributors:

    Publication date :

    2021-10-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

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



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