KR102598417B1 - 하이브리드 차량의 난방 제어 방법 - Google Patents
하이브리드 차량의 난방 제어 방법 Download PDFInfo
- Publication number
- KR102598417B1 KR102598417B1 KR1020180119327A KR20180119327A KR102598417B1 KR 102598417 B1 KR102598417 B1 KR 102598417B1 KR 1020180119327 A KR1020180119327 A KR 1020180119327A KR 20180119327 A KR20180119327 A KR 20180119327A KR 102598417 B1 KR102598417 B1 KR 102598417B1
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- South Korea
- Prior art keywords
- voltage
- hybrid vehicle
- determination step
- ptc heater
- target
- Prior art date
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000007423 decrease Effects 0.000 abstract description 7
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
본 발명에 따른 하이브리드 차량의 난방 제어 방법은, 외부로부터 하이브리드 차량의 실내로 공기를 도입하는 덕트(31)와, 상기 덕트(31)의 내부에 엔진(11)으로부터 가열된 냉각수가 순환하는 히터코어(12)와, 상기 덕트(31)의 내부 상기 하이브리드 차량의 고전압 배터리로부터 공급된 전원에 의해 발열되는 PTC 히터(41)와, 상기 엔진(11)의 작동유무와 상기 PTC 히터(41)의 작동유무를 제어하는 제어부(50)를 구비하고, 상기 덕트(31)를 통하여 상기 하이브리드 차량의 실내로 도입되는 공기를 가열하는 하이브리드 차량의 난방 제어 방법에 있어서, 상기 엔진(11)과 상기 차량의 전장부분에 전원을 공급하는 보조배터리의 상태에 따라, LDC(low voltage DC-DC converter)로부터 상기 PTC 히터(41)로 공급되는 전압을 가변하여, 상기 PTC 히터(41)로 전원을 인가하는 것을 특징으로 한다.
Description
도 2는 종래기술에 따른 하이브리드 차량의 공조시스템을 도시한 개략도.
도 3은 종래기술에 따른 하이브리드 차량의 난방시 PTC 히터의 적용에 따른 냉각수온도와 실내온도 및 엔진 작동 사이의 관계를 도시한 그래프.
도 4는 종래기술에 따른 하이브리드 차량이 PTC 히터를 장착한 상태에서의 난방시 주행상황을 도시한 그래프.
도 5는 종래기술에 따른 하이브리드 차량에서 LDC의 출력전압을 결정하는 상태를 도시한 블록도.
도 6은 본 발명에 따른 하이브리드 차량의 난방 제어 방법을 도시한 순서도.
도 7은 본 발명에 따른 하이브리드 차량의 난방 제어 방법에서 고전장 부하 목표 전압 결정 단계를 상세히 도시한 순서도.
도 8은 PTC 히터의 작동 특성을 도시한 그래프.
도 9는 본 발명에 따른 하이브리드 차량의 난방 제어 방법에 따른 하이브리드 차량의 상태를 도시한 그래프.
12 : 히터코어
21 : 응축기
22 : 압축기
23 : 증발기
24 : 팽창밸브
31 : 덕트
32 : 템프도어
41 : PTC 히터
50 : 제어부
S110 : LDC 제어 가능 판단 단계
S120 : PTC 히터 작동 요구 판단 단계
S130 : 고전장 부하 모드 진입 판단 단계
S140 : 고전장 부하 목표 전압 결정 단계
S141 : 보정전압 산출 단계
S142 : 목표전압 산출단계
S143 : 전압범위 설정단계
S144 : 목표 출력 전압 결정 단계
S150 : PTC 히터 전원 인가 단계
S160 : 시동 오프 판단 단계
Claims (18)
- 외부로부터 하이브리드 차량의 실내로 공기를 도입하는 덕트와, 상기 덕트의 내부에 엔진으로부터 가열된 냉각수가 순환하는 히터코어와, 상기 덕트의 내부 상기 하이브리드 차량의 고전압 배터리로부터 공급된 전원에 의해 발열되는 PTC 히터와, 상기 엔진의 작동유무와 상기 PTC 히터의 작동유무를 제어하는 제어부를 구비하고, 상기 덕트를 통하여 상기 하이브리드 차량의 실내로 도입되는 공기를 가열하는 하이브리드 차량의 난방 제어 방법에 있어서,
상기 엔진과 상기 차량의 전장부분에 전원을 공급하는 보조배터리의 상태에 따라, LDC(low voltage DC-DC converter)로부터 상기 PTC 히터로 공급되는 전압을 가변하여, 상기 PTC 히터로 전원을 인가하고,
상기 엔진과 차량의 전장부품에 전원을 공급하는 보조배터리의 상태에 따라 상기 LDC로부터 상기 PTC 히터로 출력되어야 할 목표 출력 전압을 결정하는 고전장 부하 목표 전압 결정 단계를 포함하고,
고전장 부하 목표 전압 결정 단계는, 기준 전압에 상기 엔진과 상기 보조배터리의 상태에 따라 상기 PTC 히터에 초기조건으로 인가되는 것으로 설정된 기준 전압을 보정할 보정 전압으로 산출하는 보정전압 산출 단계와, 상기 보정 전압을 상기 기준 전압에 더하여, 목표전압을 산출하는 목표전압 산출 단계와, 상기 목표전압 산출 단계에서 산출된 목표전압을 상기 PTC 히터에 인가되는 목표 출력 전압으로 설정하는 목표 출력 전압 결정 단계를 포함하며,
상기 목표전압 산출 단계와 상기 목표 출력 전압 결정 단계 사이에는,
상기 목표전압 산출 단계에서 산출된 목표전압이 상기 LDC로부터 상기 PTC 히터로 출력가능한 최대전압과 최소전압 사이 인지를 확인하고, 상기 목표전압 산출 단계에서 산출된 목표전압이 상기 최대전압보다 높으면 상기 최대전압을 상기 목표 출력 전압으로 설정하고, 상기 목표전압 산출 단계에서 산출된 목표전압이 상기 최소전압보다 낮으면 상기 목표 출력 전압으로 설정하는 전압범위 설정단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제1항에 있어서,
상기 고전장 부하 목표 전압 결정 단계 이후,
상기 덕트를 통과하는 공기가 승온되도록 상기 LDC에서 상기 PTC 히터로 상기 목표 출력 전압을 인가하여 상기 PTC 히터를 가열시키는 PTC 히터 전원 인가 단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 삭제
- 제1항에 있어서,
상기 보정전압 산출 단계에서
상기 엔진의 출력과 상기 보정 전압은 정비례하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 삭제
- 제1항에 있어서,
상기 보정전압 산출 단계에서
상기 보조배터리의 온도와 상기 보정 전압은 정비례하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 삭제
- 제1항에 있어서,
상기 보정전압 산출 단계에서,
상기 보조배터리의 SOC(state of charge)와 상기 보정 전압은 정비례하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 삭제
- 제1항에 있어서,
상기 보정전압 산출 단계에서는,
상기 엔진의 출력에 의해 설정되는 보정전압과 상기 보조배터리의 온도에 의해 설정되는 보정전압과 상기 보조배터리의 SOC에 의해 설정되는 보정전압을 합하여, 상기 기준 전압에 더 해질 보정 전압으로 설정되는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 삭제
- 제1항에 있어서,
상기 고전장 부하 목표 전압 결정 단계 이전에,
상기 제어부가 고전압 배터리의 전원을 PTC 히터에 공급가능한 상태로 변환하는 LDC가 정상적으로 작동하는지를 판단하는 LDC 제어 가능 판단 단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제12항에 있어서,
LDC 제어 가능 판단 단계와 상기 고전장 부하 목표 전압 결정 단계 사이에,
상기 제어부가 상기 히터코어로 내부로 순환하는 냉각수만으로 탑승자로부터 설정된 온도에 맞게 상기 실내로 공급되는 공기를 가열하지 못하여 상기 PTC 히터를 상기 PTC 히터를 작동시켜야 하는지를 판단하는 PTC 히터 작동 요구 판단 단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제13항에 있어서,
LDC 제어 가능 판단 단계와 상기 고전장 부하 목표 전압 결정 단계 사이에,
상기 제어부가 상기 LDC를 고전장 부하 모드로 진입가능한지를 판단하는 고전장 부하 모드 진입 판단 단계를 더 포함하는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제14항에 있어서,
상기 PTC 히터 전원 인가 단계 이후에,
상기 하이브리드 차량의 시동이 오프되었는지를 판단하는 시동 오프 판단 단계를 더 포함하고,
상기 시동 오프 판단 단계에서 상기 하이브리드 차량의 시동이 오프되지 않은 것으로 판단되면, 상기 LDC 제어 가능 판단 단계로 리턴되는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제15항에 있어서,
상기 LDC 제어 가능 판단 단계에서 상기 제어부가 상기 LDC가 정상적으로 작동하지 않는 것으로 판단되면, 상기 시동 오프 판단 단계가 수행되는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제15항에 있어서,
상기 PTC 히터 작동 요구 판단 단계에서,
상기 제어부가 상기 히터코어의 열만으로 충분히 상기 탑승자가 설정된 온도에 도달하도록 상기 덕트를 유동하는 공기를 승온시킬 수 있는 것으로 판단하면, 상기 시동 오프 판단 단계가 수행되는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법. - 제15항에 있어서,
고전장 부하 모드 진입 판단 단계에서 상기 제어부가 상기 LDC를 고전장 부하 모드로 진입가능하지 못한 것으로 판단하면, 상기 시동 오프 판단 단계가 수행되는 것을 특징으로 하는 하이브리드 차량의 난방 제어 방법.
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