KR101765643B1 - 하이브리드 차량의 정속 주행을 위한 배터리의 soc 제어 방법 및 그 제어 장치 - Google Patents
하이브리드 차량의 정속 주행을 위한 배터리의 soc 제어 방법 및 그 제어 장치 Download PDFInfo
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Abstract
Description
도 1은 본 발명의 실시예에 따른 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법을 설명하는 흐름도(flowchart)이다.
도 2는 본 발명의 실시예에 따른 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법을 설명하는 그래프(graph)이다.
도 3 은 본 발명의 실시예에 따른 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법이 적용되는 하이브리드 차량을 설명하는 블락 다이어그램(block diagram)이다.
310: 엔진
330: 모터
340: 배터리
Claims (10)
- 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법에 있어서,
제어기가 상기 배터리의 SOC(state of charge)의 측정값에 근거하여 상기 정속 주행을 위한 배터리의 SOC의 변화 기울기를 포함하는 배터리의 SOC를 예측하는 단계;
상기 SOC의 변화 기울기가 0보다 클 때, 상기 제어기가 상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 상한값 이상인 지 여부를 판단하는 단계; 및
상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 상한값에 도달될 때, 상기 제어기가 상기 배터리의 전력을 사용하는 하이브리드 차량의 구동 모터만을 구동시키는 단계
를 포함하며,
상기 배터리의 노멀(normal) 영역은, 상기 하이브리드 차량이 정속 주행을 하기 위해 필요한 영역인 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법.
- 제1항에 있어서,
상기 제어기는 회귀분석 방법을 이용하여 상기 SOC의 변화 기울기를 예측하는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법.
- 제2항에 있어서,
상기 제어기는 상기 정속 주행에 따른 상기 배터리의 SOC의 측정값 및 상기 정속 주행에 따른 상기 배터리의 SOC의 예측값에 근거하여 상기 SOC의 변화 기울기를 계산하는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법.
- 제1항에 있어서, 상기 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법은,
상기 SOC의 변화 기울기가 0보다 크지 않을 때, 상기 제어기가 상기 SOC의 변화 기울기가 0보다 작은 지 여부를 판단하는 단계;
상기 SOC의 변화 기울기가 0보다 작을 때, 상기 제어기가 상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 하한값 이하인 지 여부를 판단하는 단계; 및
상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 하한값에 도달될 때, 상기 제어기가 상기 배터리를 충전시키는 하이브리드 차량의 엔진만을 구동시키는 단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법.
- 제4항에 있어서, 상기 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법은,
상기 SOC의 변화 기울기가 0일 때, 상기 제어기가 상기 하이브리드 차량의 주행 상태를 상기 구동 모터와 상기 엔진이 구동되는 이전 정속 주행 상태로 유지하는 단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 방법.
- 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 장치에 있어서,
고전압이 저장되는 배터리; 및
상기 배터리의 SOC(state of charge)의 측정값에 근거하여 상기 정속 주행을 위한 배터리의 SOC의 변화 기울기를 포함하는 배터리의 SOC를 예측하는 제어기;
를 포함하며,
상기 제어기는, 상기 SOC의 변화 기울기가 0보다 클 때, 상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 상한값 이상인 지 여부를 판단하고, 상기 제어기는, 상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 상한값에 도달될 때, 상기 배터리의 전력을 사용하는 하이브리드 차량의 구동 모터만을 구동시키고,
상기 배터리의 노멀(normal) 영역은, 상기 하이브리드 차량이 정속 주행을 하기 위해 필요한 영역인 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 장치.
- 제6항에 있어서,
상기 제어기는 회귀분석 방법을 이용하여 상기 SOC의 변화 기울기를 예측하는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 장치.
- 제7항에 있어서,
상기 제어기는 상기 정속 주행에 따른 상기 배터리의 SOC의 측정값 및 상기 정속 주행에 따른 상기 배터리의 SOC의 예측값에 근거하여 상기 SOC의 변화 기울기를 계산하는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 장치.
- 제6항에 있어서,
상기 제어기는, 상기 SOC의 변화 기울기가 0보다 크지 않을 때, 상기 SOC의 변화 기울기가 0보다 작은 지 여부를 판단하고,
상기 제어기는, 상기 SOC의 변화 기울기가 0보다 작을 때, 상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 하한값 이하인 지 여부를 판단하고,
상기 제어기는, 상기 예측된 배터리의 SOC가 상기 배터리의 노멀(normal) 영역의 하한값에 도달될 때, 상기 배터리를 충전시키는 하이브리드 차량의 엔진만을 구동시키는 것을 특징으로 하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 장치.
- 제9항에 있어서,
상기 제어기는, 상기 SOC의 변화 기울기가 0일 때, 상기 하이브리드 차량의 주행 상태를 상기 구동 모터와 상기 엔진이 구동되는 이전 정속 주행 상태로 유지하는 하이브리드 차량의 정속 주행을 위한 배터리의 SOC 제어 장치.
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