HYBRID VEHICLE AND METHOD OF CONTROLLING THE SAME

• Main Authors: PARK JI HYUN, CHO JIN KUK
• Format: Patent
• Language: English; Korean
• Published: 21.02.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL OR REGULATION THEREOF; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

The present invention relates to a hybrid vehicle of which an engine can be started when a direct current conversion device malfunctions, and a controlling method thereof. The hybrid vehicle including a driving motor and an engine according to an embodiment of the present invention comprises: a first relay for controlling the maneuver of a starter; a second relay arranged between a first power line for connecting the starter and a first battery and a second power line for connecting a direct current converter (LDC) converting the power of a second battery and an electric load; and a controller for selectively controlling the state of the first relay and the second relay. If the maneuver of the engine is determined and the malfunction of the direct current converter is detected, the controller can control the cranking of the engine to be performed by controlling the first relay into an on-state while maintaining the second relay in an on-state. 본 발명은 직류 변환 장치가 고장인 상황에서 엔진 시동이 가능한 하이브리드 자동차 및 그 제어 방법에 관한 것이다. 본 발명의 일 실시예에 따른 구동 모터와 엔진을 구비하는 하이브리드 자동차는, 스타터의 기동을 제어하는 제1 릴레이; 상기 스타터와 제1 배터리를 연결하는 제1 전력 라인과, 제2 배터리의 전력을 변환하는 직류 변환기(LDC)와 전장 부하를 연결하는 제2 전력 라인 사이에 배치되는 제2 릴레이; 및 상기 제1 릴레이 및 상기 제2 릴레이의 상태를 선택적으로 제어하는 제어기를 포함하되, 상기 제어기는 상기 엔진의 기동을 결정하고 상기 직류 변환기의 고장을 감지하면, 상기 제2 릴레이는 온 상태로 유지하면서 상기 제1 릴레이를 온 상태로 제어하여 상기 엔진의 크랭킹이 수행되도록 제어할 수 있다.