KR102213601B1 - Obc용 배터리 충전 방법 및 이를 실행하는 시스템 - Google Patents
Obc용 배터리 충전 방법 및 이를 실행하는 시스템 Download PDFInfo
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- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
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- H02M3/33569—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
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- B60L2240/00—Control parameters of input or output; Target parameters
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Abstract
Description
도 2는 본 발명에 따른 OBC용 배터리 충전 방법의 일 실시예를 설명하기 위한 흐름도이다.
도 3은 본 발명의 일 실시예에 따른 스위칭 손실을 설명하기 위한 도면이다.
도 4는 본 발명의 일 실시예에 따른 배터리 전류 리플 보상 전 및 배터리 전류 리플 보상 후의 배터리 전류를 비교 설명하기 위한 그래프이다.
도 5는 본 발명의 일 실시예에 따른 OBC용 배터리 충전 시스템 및 다른 시스템의 실행 결과를 비교 설명하기 위한 그래프이다.
110: 제1 컨버터
120: 제2 컨버터
130: 배터리 제어 장치
200: 배터리
Claims (12)
- 배터리 부하 전압 및 배터리 정격 전압의 비교 결과에 따라 제1 컨버터의 출력 전압을 제어하여 제2 컨버터에 인가시키는 단계;
상기 출력 전압의 제어 결과에 따라 저속 주파수 변조 방법 또는 고속 주파수 변조 방법을 이용하여 상기 출력 전압에 대한 주파수 변조를 실행하도록 제2 컨버터를 제어하는 단계; 및
상기 주파수 변조를 실행하는데 사용된 변조 방법의 종류에 따라 배터리 전류에 계통 주파수의 고조파를 발생시키는 단계를 포함하고,
상기 배터리 부하 전압 및 배터리 정격 전압의 비교 결과에 따라 제1 컨버터의 출력 전압을 제어하여 제2 컨버터에 인가시키는 단계는,
상기 배터리 부하 전압이 배터리 정격 전압 이하이면, 배터리 정격 전압 및 상기 제2 컨버터의 정격 효율의 특정 비율에 따라 제1 전압을 결정하고, 상기 출력 전압을 상기 제1 전압으로 변경하여 상기 제2 컨버터에 인가시키는 단계; 및
상기 배터리 부하 전압이 배터리 정격 전압 이상이면 상기 제1 컨버터의 출력 전압을 센싱한 센싱 값, 입출력 전압, 전류 및 배터리 충전 시스템에 따라 결정된 보정 값을 이용하여 제2 전압을 결정하고, 상기 출력 전압을 상기 제2 전압으로 변경하여 상기 제2 컨버터에 인가시키는 단계를 포함하며,
상기 출력 전압을 상기 제2 전압으로 변경하여 상기 제2 컨버터에 인가시키는 단계에서, 상기 센싱 값을, 입출력 전압 및 전류에 따른 효율로 나눈 값에, 상기 보정 값을 곱하여 상기 제2 전압을 계산하는 것을 특징으로 하는
OBC용 배터리 충전 방법.
- 삭제
- 삭제
- 삭제
- 제1항에 있어서,
상기 출력 전압의 제어 결과에 따라 저속 주파수 변조 방법 또는 고속 주파수 변조 방법을 이용하여 상기 출력 전압에 대한 주파수 변조를 실행하도록 제2 컨버터를 제어하는 단계는
상기 출력 전압이 상기 제1 전압으로 변경된 경우, 상기 저속 주파수 변조 방법을 이용하여 주파수 변조를 실행하여 제2 컨버터의 출력 전압이 제어되도록 상기 제2 컨버터를 제어하는 단계; 및
상기 출력 전압이 상기 제2 전압으로 변경된 경우, 상기 고속 주파수 변조 방법을 이용하여 주파수 변조를 실행하여 제2 컨버터의 출력 전압이 제어되도록 상기 제2 컨버터를 제어하는 단계를 포함하는 것을 특징으로 하는
OBC용 배터리 충전 방법.
- 제5항에 있어서,
상기 주파수 변조를 실행하는데 사용된 변조 방법의 종류에 따라 배터리 전류에 계통 주파수의 고조파를 시키는 단계는
상기 저속 주파수 변조 방법을 이용하여 상기 출력 전압에 대한 주파수 변조를 실행한 경우, 상기 배터리 전류에 계통 주파수의 고조파를 발생시키는 단계를 포함하는 것을 특징으로 하는
OBC용 배터리 충전 방법.
- 입력 전원의 전압을 변환하는 제1 컨버터;
상기 제1 컨버터의 출력 전압을 입력 전압으로 인가받고, 저속 주파수 변조 방법 또는 고속 주파수 변조 방법에 따라 스위칭 온오프 동작을 수행하여 상기 입력 전압을 배터리 충전을 위한 전압으로 변환하는 제2 컨버터; 및
배터리 부하 전압 및 배터리 정격 전압의 비교 결과에 따라 상기 제1 컨버터의 출력 전압을 제어하여 상기 제2 컨버터에 인가시키고, 상기 출력 전압의 제어 결과에 따라 저속 주파수 변조 방법 또는 고속 주파수 변조 방법을 이용하여 상기 출력 전압에 대한 주파수 변조를 실행하도록 제2 컨버터를 제어하고, 상기 주파수 변조를 실행하는데 사용된 변조 방법의 종류에 따라 배터리 전류에 계통 주파수의 고조파를 발생시키는 배터리 제어 장치를 포함하고,
상기 배터리 제어 장치는,
상기 배터리 부하 전압이 배터리 정격 전압 이하이면, 배터리 정격 전압 및 상기 제2 컨버터의 정격 효율의 특정 비율에 따라 제1 전압을 결정하고, 상기 출력 전압을 제1 전압으로 변경하며,
상기 배터리 부하 전압이 배터리 정격 전압 이상이면, 상기 제1 컨버터의 출력 전압을 센싱한 센싱 값, 입출력 전압, 전류 및 배터리 충전 시스템에 따라 결정된 보정 값을 이용하여 제2 전압을 결정하고, 상기 출력 전압을 제2 전압으로 변경하며,
변경된 출력 전압이 상기 제2 컨버터에 인가되도록 제어하고,
상기 센싱 값을, 입출력 전압 및 전류에 따른 효율로 나눈 값에, 상기 보정 값을 곱하여 상기 제2 전압을 계산하는 것을 특징으로 하는
OBC용 배터리 충전 시스템.
- 삭제
- 삭제
- 삭제
- 제7항에 있어서,
상기 배터리 제어 장치는
상기 출력 전압이 상기 제1 전압으로 변경된 경우, 상기 저속 주파수 변조 방법을 이용하여 주파수 변조를 실행하여 제2 컨버터의 출력 전압이 제어되도록 상기 제2 컨버터를 제어하고, 상기 출력 전압이 상기 제2 전압으로 변경된 경우, 상기 고속 주파수 변조 방법을 이용하여 주파수 변조를 실행하여 제2 컨버터의 출력 전압이 제어되도록 상기 제2 컨버터를 제어하는 것을 특징으로 하는
OBC용 배터리 충전 시스템.
- 제11항에 있어서,
상기 배터리 제어 장치는
상기 저속 주파수 변조 방법을 이용하여 상기 출력 전압에 대한 주파수 변조를 실행한 경우, 상기 배터리 전류에 계통 주파수의 고조파를 발생시키는 것을 특징으로 하는
OBC용 배터리 충전 시스템.
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US16/701,274 US11292355B2 (en) | 2018-12-06 | 2019-12-03 | Battery charging method and system for on-board charger |
CN201911232475.2A CN111293762B (zh) | 2018-12-06 | 2019-12-04 | 用于车载充电器的电池充电方法和系统 |
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