KR20190121103A - 차량용 전력 변환 시스템 및 그 제어방법 - Google Patents
차량용 전력 변환 시스템 및 그 제어방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일실시예에 따른 차량용 전력 변환 시스템을 상세히 도시한 도면이다.
도 3은 본 발명의 일실시예에 따른 차량용 전력 변환 시스템에서, 제1 에너지 저장장치가 충전될 시 외부로부터 제공되는 전력의 흐름을 도시한 도면이다.
도 4는 본 발명의 일실시예에 따른 차량용 전력 변환 시스템에서, 차량이 주행 중일 시 제1 에너지 저장장치로부터 제공되는 전력의 흐름을 도시한 도면이다.
도 5는 본 발명의 일실시예에 따른 차량용 전력 변환 시스템 제어방법의 흐름도이다.
120: 제2 입출력단 130: 스위칭 소자
200: 제1 에너지 저장장치 300: 제1 전압 변환 회로부
310: 트랜스포머 320: 정류부
400: 제2 에너지 저장장치 500: 스위칭부
600: 제어부 700: 전력 공급부
800: 제2 전압 변환 회로부 900: 전장부하
Claims (11)
- 차량에 포함된 차량용 전력 변환 시스템으로서,
제1 입출력단, 제2 입출력단 및 상기 제1 입출력단과 상기 제2 입출력단 사이에 연결된 복수의 스위칭 소자를 포함하는 스위칭 회로부;
상기 제2 입출력단에 연결되며 사전 설정된 충방전 전압을 갖는 제1 에너지 저장장치;
상기 제1 입출력단에서 출력되는 전력을 변환하여 상기 제1 에너지 저장장치의 전압 보다 낮은 전압을 출력하는 제1 전압 변환 회로부;
상기 제1 전압 변환 회로부의 출력 전압으로 충방전되는 제2 에너지 저장장치; 및
상기 제1 에너지 저장장치의 충전 여부 및 상기 차량의 주행 여부에 기반하여 상기 복수의 스위칭 소자의 개방/단락 상태를 제어하는 제어부;를 포함하며,
상기 제1 에너지 저장장치의 충전 시, 상기 제1 입출력단에는 차량의 외부로부터 상기 제1 에너지 저장장치를 충전하기 위한 교류 충전 전력이 제공되는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 1에 있어서,
상기 제1 입출력단과 상기 제1 전압 변환 회로부 사이의 전기적 연결 상태를 결정하는 스위칭부; 를 더 포함하는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 2에 있어서, 상기 제어부는,
상기 제1 에너지 저장장치의 충전 시, 상기 스위칭부를 개방시키고, 상기 제1 입출력단으로 제공된 교류 충전 전력을 변환하여 상기 제2 입출력단에서 상기 제1 에너지 저장장치의 충방전 전압이 출력되도록 상기 복수의 스위칭 소자를 제어하는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 2에 있어서, 상기 제어부는,
상기 차량이 주행 중인 경우, 상기 스위칭부를 단락시키고, 제2 입출력단으로 제공되는 상기 제1 에너지 저장장치의 전력을 변환하여 상기 제1 입출력단에서 교류 전력으로 출력되도록 상기 복수의 스위칭 소자를 제어하는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 4에 있어서, 상기 제1 전압 변환 회로부는,
상기 제1 입출력단에서 제공되는 상기 제1 에너지 저장장치의 교류 전력을 변환하여 상기 제1 에너지 저장장치의 전압보다 낮은 직류 전압으로 출력하는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 1에 있어서, 상기 스위칭 회로부는,
상기 복수의 스위칭 소자를 포함하는 풀-브릿지 회로인 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 1에 있어서, 상기 제1 전압 변환 회로부는,
제1 입출력단으로부터 제공되는 교류 전압의 크기를 변환하는 트랜스포머; 및
상기 트랜스포머에서 출력되는 교류 전압을 정류하여 직류 전압으로 출력하는 정류부;를 포함하는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 1에 있어서,
상기 제1 에너지 저장장치의 직류 전압을 제공받아 상기 차량의 전장부하의 전원 전압의 크기로 변환하는 제2 전압 변환 회로부를 더 포함하는 것을 특징으로 하는 차량용 전력 변환 시스템. - 청구항 8에 있어서, 상기 제어부는,
상기 제1 에너지 저장장치의 충전 시 제2 전압 변환 회로부를 구동시키는 것을 특징으로 하는 차량용 전력 변환 시스템. - 차량 내의 제1 에너지 저장장치의 충전 여부 및 상기 차량의 주행 중인지를 판단하는 단계;
상기 제1 에너지 저장장치가 충전 중으로 판단된 경우, 스위칭부를 개방시키고, 제1 입출력단으로 제공된 교류 충전 전력을 변환하여 제2 입출력단에서 상기 제1 에너지 저장장치의 충방전 전압이 출력되도록 복수의 스위칭 소자를 제어하는 단계; 및
상기 차량이 주행 중으로 판단된 경우, 상기 스위칭부를 단락시키고, 제2 입출력단으로 제공되는 상기 제1 에너지 저장장치의 전력을 변환하여 상기 제1 입출력단에서 교류 전력으로 출력되도록 상기 복수의 스위칭 소자를 제어하는 단계;를 포함하는 차량용 전력 변환 시스템 제어방법. - 청구항 10에 있어서,
상기 제1 에너지 저장장치가 충전 중으로 판단된 경우, 제2 전압 변환 회로부를 구동시키는 단계;를 더 포함하는 것을 특징으로 하는 차량용 전력 변환 시스템 제어방법.
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