The present invention relates to an OBC/LDC integrated circuit having multiple functions and turns ratio, which has high power density and enables bidirectional operation in a wide voltage range without additional control in an electric vehicle battery charging system. By selectively using the turns ratio, both bidirectional G2V and V2G functions are performed in a wide voltage range without additional control, and charging efficiency can be increased by operating using only a small number of switches in an LDC function. The OBC/LDC integrated circuit having the multiple functions and the turns ratio comprises: a first switching unit; a low voltage battery; a mode selection switch; first and second capacitors; a second switching unit; a third switching unit; a transformer circuit unit; and a high voltage battery.

    본 발명은 전기자동차 배터리 충전 시스템에서 높은 전력밀도를 갖고 추가적인 제어없이 넓은 전압범위의 양방향 동작이 가능하도록 한 멀티 기능과 권선비를 갖는 OBC/LDC 통합형 회로에 관한 것으로, 선택적으로 권선비를 사용하는 것에 의해 추가적인 제어 없이 넓은 전압범위에서 양방향 G2V 와 V2G 기능을 모두 수행하고, LDC 기능에서 적은 스위치만을 사용하여 동작하는 것에 의해 충전 효율을 높일 수 있도록 한 것이다.


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    Title :

    / Multi-Functional Multi-Ratio / Integrated circuit


    Additional title:

    멀티 기능과 권선비를 갖는 OBC/LDC 통합형 회로


    Contributors:
    PARK JUNGWOOK (author) / KIM ISSAC (author)

    Publication date :

    2021-06-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES , Systeme zum Regeln elektrischer oder magnetischer Veränderlicher / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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