본 발명은 연료전지 스택을 구성하는 셀 성능 저하 등과 같은 문제 발생 가능성 여부를 미리 파악한 후, 연료전지 차량의 출력 저하가 발생하기 전에 스택의 전류 제한 로직을 피드 포워드(Feed Forward) 제어 방식으로 채택하여, 피드 포워드 제어 방식에 의한 전류 제한 로직에 의하여 스택의 전류가 일정 수준 낮아진 후, 부하의 전류 사용 시점부터 스택의 전류를 최대 사용 전류까지 회복되도록 함으로써, 스택의 전류가 급격하게 낮아지는 것을 방지하여 연료전지 차량의 주행 중 울컥거림이나 쇽(shock) 등과 같은 현상이 발생하는 것을 방지할 수 있는 연료전지 스택의 전류 제한 방법을 제공하고자 한 것이다.

    A current limiting method of a fuel cell stack is capable of preventing current of the fuel cell stack from rapidly dropping to prevent jerking or shock from occurring while a vehicle travels. The method includes: determining whether performance deterioration of a unit cell of the fuel cell stack has occurred, employing a feed forward control type current limiting logic of the fuel cell stack before an output of the fuel cell vehicle is lowered, decreasing the current of the fuel cell stack to a predetermined level by the feed forward control type current limiting logic, and gradually restoring the current of the fuel cell stack to a maximum current usage value from a point in time when the current of a load is used.


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    Title :

    CURRENT LIMITING METHOD FOR FUEL CELL VEHICLE


    Additional title:

    연료전지 스택의 전류 제한 방법


    Publication date :

    2024-06-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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