KR101786338B1 - Power train for hybrid vehicle - Google Patents

Power train for hybrid vehicle Download PDF

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KR101786338B1
KR101786338B1 KR1020160053807A KR20160053807A KR101786338B1 KR 101786338 B1 KR101786338 B1 KR 101786338B1 KR 1020160053807 A KR1020160053807 A KR 1020160053807A KR 20160053807 A KR20160053807 A KR 20160053807A KR 101786338 B1 KR101786338 B1 KR 101786338B1
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South Korea
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dct
motor
power
engine
clutch
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KR1020160053807A
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Korean (ko)
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김용기
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/10—Dynamic electric regenerative braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
    • F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
    • F16H61/688—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

본 발명은 2개의 모터와 엔진을 듀얼 클러치 변속기(DCT)로 연결한 동력 전달 시스템을 구축하되, 각 주행 상황별 최적의 주행모드를 구현할 수 있도록 한 하이브리드 차량용 동력 전달 시스템에 관한 것이다.
이를 위해, 본 발명은 엔진; 상기 엔진의 출력축과 연결되는 DCT; 상기 DCT의 제1DCT 축 또는 제2DCT 축에 동력 전달 가능하게 연결되는 제1모터; 및 주행 휠과 연결되는 상기 DCT의 출력축에 동력 전달 가능하게 연결되는 제2모터; 를 포함하되, 상기 DCT는: 엔진의 출력축과 연결되는 제1클러치 및 제2클러치; 제1클러치와 연결되는 제1DCT 축 및 제2클러치와 연결되는 제2DCT 축; 제1DCT 축에 장착된 제1싱크로나이저와 결합되거나 제2DCT 축에 장착된 제2싱크로나이저와 결합되어, 주행 휠로 동력을 출력하는 DCT 출력축; 으로 구성된 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템을 제공한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission system for a hybrid vehicle in which a power transmission system in which two motors and an engine are connected by a dual clutch transmission (DCT) is constructed so as to realize an optimum traveling mode for each driving situation.
To this end, the present invention provides an engine comprising: an engine; A DCT connected to an output shaft of the engine; A first motor connected to the first DCT shaft or the second DCT shaft of the DCT so as to transmit power; And a second motor connected to the output shaft of the DCT connected to the traveling wheel so as to transmit power; The DCT comprising: a first clutch and a second clutch that are connected to an output shaft of the engine; A first DCT shaft connected to the first clutch and a second DCT shaft connected to the second clutch; A DCT output shaft coupled to a first synchronizer mounted on a first DCT shaft or coupled to a second synchronizer mounted on a second DCT shaft and outputting power to the driving wheel; And a power transmission system for a hybrid vehicle.

Description

하이브리드 차량용 동력 전달 시스템{Power train for hybrid vehicle}Technical Field [0001] The present invention relates to a power train for a hybrid vehicle,

본 발명은 하이브리드 차량용 동력 전달 시스템에 관한 것으로서, 더욱 상세하게는 2개의 모터와 엔진을 듀얼 클러치 변속기(DCT, Dual Clutch Transmission)로 연결한 동력 전달 시스템을 구축하되, 각 주행 상황별 최적의 주행모드를 구현할 수 있도록 한 하이브리드 차량용 동력 전달 시스템에 관한 것이다.
[0001] The present invention relates to a power transmission system for a hybrid vehicle, and more particularly, to a power transmission system in which two motors and an engine are connected by a dual clutch transmission (DCT) To a power transmission system for a hybrid vehicle.

종래의 일례에 따른 하이브리드 차량용 동력전달 시스템은 첨부한 도 1에 도시된 바와 같이, 서로 직렬로 배열되는 엔진(10) 및 모터(12), 엔진(10) 및 모터(12) 사이에 배열되어 엔진 동력을 전달 또는 단절시키는 엔진클러치(11)와, 모터 또는 모터 및 엔진 동력을 주행 휠(14)로 변속하여 출력하는 변속기(13)와, 모터 제어 및 발전 제어를 위한 인버터와, 모터 등에 전력을 제공하도록 인버터와 충방전 가능하게 연결되는 고전압 배터리 등을 포함하여 구성된다.1, a hybrid vehicle power transmission system according to a conventional example includes an engine 10 and a motor 12 arranged in series with each other, an engine 10 and a motor 12, A transmission 13 for shifting and outputting a motor or a motor power to the traveling wheel 14; an inverter for motor control and power generation control; And a high-voltage battery connected to the inverter so as to be chargeable and dischargeable.

따라서, 모터 동력만을 이용하는 순수 전기자동차 모드인 EV(electric vehicle)모드와, 엔진을 주동력으로 하면서 모터를 보조동력으로 이용하는 HEV(hybrid electric vehicle)모드와, 차량의 제동 혹은 관성에 의한 주행시 차량의 제동 및 관성 에너지를 모터에서 발전을 통하여 회수하여 배터리에 충전하는 회생제동(RB: Regenerative Braking)모드 등의 주행모드를 제공한다.Therefore, there is an EV (electric vehicle) mode which is a pure electric vehicle mode using only motor power, an HEV (hybrid electric vehicle) mode which uses the motor as an auxiliary power and an engine as a main power, And a regenerative braking (RB) mode in which braking and inertia energy is recovered through power generation from the motor and charged to the battery.

상기와 같이 변속기를 채용한 플러그인 하이브리드 차량은 통상 변속기의 전단에 CD 모드(Charge Depleting Mode ; 방전운행모드) 운행에 대응하기 위하여 단일의 대용량 전기 구동 모터를 채택하고 있고, 이러한 전기 구동모터는 차량이 요구하는 EV 모드 성능을 만족시키기 위해 내연기관의 엔진 출력에 근접하는 대용량의 고출력 모터로 채택되고 있다.The plug-in hybrid vehicle employing the transmission as described above generally employs a single large-capacity electric drive motor in order to cope with the CD mode (charge-discharge driving mode) operation at the front end of the transmission, Capacity high-output motor close to the engine output of the internal combustion engine in order to satisfy the required EV mode performance.

그러나, 단일의 고출력 대용량 모터는 통상 도심에서의 EV 모드 주행을 기준으로 한 경우, 모터 출력 대비 저/중부하 주행시 주로 구동됨에 따라, 모터가 비효율적으로 운전되는 문제가 있다.However, when a single high-output large-capacity motor is driven based on the EV mode travel in the city center, the motor is mainly driven at low / heavy load driving with respect to the motor output, which causes the motor to operate inefficiently.

또한, EV 모드 주행시, 엔진 클러치의 드래그를 감수해야 하고, EV 모드 주행시 변속기를 통해 동력이 전달될 때 동력의 경로 손실이 발생하는 단점이 있다.
Further, there is a disadvantage in that the engine clutch must be dragged at the time of EV mode travel, and power loss occurs when power is transmitted through the transmission at the time of EV mode travel.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 2개의 소용량 모터와 엔진을 듀얼 클러치 변속기(이하, DCT 라 칭함)로 연결한 동력 전달 시스템을 구축하되, 소용량 모터 2개 중 하나는 DCT 축에 연결하고, 다른 하나는 DCT의 출력축에 연결하여, 플러그인 하이브리드 차량의 구동 모터에 대한 사양 요구를 충족시킬 수 있고, 차량의 주행 상황에 따라 2개의 모터를 선택적으로 사용하거나, 필요에 따라 조합하여 사용함으로써, 주행 및 충전 성능을 확보하는 동시에 차량의 성능을 개선할 수 있는 하이브리드 차량용 동력 전달 시스템을 제공하는데 그 목적이 있다.
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a power transmission system in which two small-capacity motors and an engine are connected by a dual clutch transmission (hereinafter referred to as DCT) And the other one is connected to the output shaft of the DCT to satisfy the specification requirement of the drive motor of the plug-in hybrid vehicle. The two motors can be selectively used depending on the running condition of the vehicle, And to provide a power transmission system for a hybrid vehicle that can improve the performance of a vehicle while ensuring traveling and charging performance.

상기한 목적을 달성하기 위하여 본 발명은: 엔진; 상기 엔진의 출력축과 연결되는 DCT; 상기 DCT의 제1DCT 축 또는 제2DCT 축에 동력 전달 가능하게 연결되는 제1모터; 및 주행 휠과 연결되는 상기 DCT의 출력축에 동력 전달 가능하게 연결되는 제2모터; 를 포함하되, 상기 DCT는: 엔진의 출력축과 연결되는 제1클러치 및 제2클러치; 제1클러치와 연결되는 제1DCT 축 및 제2클러치와 연결되는 제2DCT 축; 제1DCT 축에 장착된 제1싱크로나이저와 결합되거나 제2DCT 축에 장착된 제2싱크로나이저와 결합되어, 주행 휠로 동력을 출력하는 DCT 출력축; 으로 구성된 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템을 제공한다.According to an aspect of the present invention, there is provided an engine comprising: an engine; A DCT connected to an output shaft of the engine; A first motor connected to the first DCT shaft or the second DCT shaft of the DCT so as to transmit power; And a second motor connected to the output shaft of the DCT connected to the traveling wheel so as to transmit power; The DCT comprising: a first clutch and a second clutch that are connected to an output shaft of the engine; A first DCT shaft connected to the first clutch and a second DCT shaft connected to the second clutch; A DCT output shaft coupled to a first synchronizer mounted on a first DCT shaft or coupled to a second synchronizer mounted on a second DCT shaft and outputting power to the driving wheel; And a power transmission system for a hybrid vehicle.

본 발명의 동력 전달 시스템의 작동 모드 중 하나로서, 상기 DCT의 제1클러치가 결합되고, 제1싱크로나이저가 해제된 상태에서 제1모터가 단독 구동되면, 제1모터의 동력이 엔진으로 전달되어 엔진 시동이 이루어지고, 엔진 시동에 따른 제1모터의 발전 동력이 배터리로 충전되도록 한 정지 중 시동/발전 모드가 구현되는 것을 특징으로 한다.As one of the operation modes of the power transmission system of the present invention, when the first clutch of the DCT is engaged and the first motor is independently driven in a state where the first synchronizer is released, the power of the first motor is transmitted to the engine The engine is started, and a startup / power generation mode is implemented in which the generator is charged with the power generation power of the first motor in accordance with the engine start.

본 발명의 동력 전달 시스템의 작동 모드 중 다른 하나로서, 상기 DCT의 제1클러치 및 제2클러치가 모두 해제된 상태에서 제2모터의 단독 구동에 의한 구동력이 주행 휠로 직접 출력되는 EV1 모드가 구현되는 것을 특징으로 한다.As another operation mode of the power transmission system of the present invention, the EV1 mode in which the driving force by the single drive of the second motor is directly output to the traveling wheels in the state where both the first clutch and the second clutch of the DCT are released .

본 발명의 동력 전달 시스템의 작동 모드 중 또 다른 하나로서, 상기 DCT의 제1싱크로나이저가 DCT의 출력축과 결합된 상태에서 제1모터 및 제2모터가 구동되면, 제1모터 및 제2모터의 동력이 동시에 주행 휠로 출력되는 EV2 모드가 구현되는 것을 특징으로 한다.As another mode of operation of the power transmission system of the present invention, when the first motor and the second motor are driven in a state where the first synchronizer of the DCT is coupled to the output shaft of the DCT, And an EV2 mode in which power is simultaneously output to the traveling wheels is realized.

바람직하게는, 상기 EV1 또는 EV2 모드 중, DCT의 제1클러치가 결합되고, 제1싱크로나이저가 해제된 상태에서 제1모터의 동력이 엔진으로 전달되어, 주행 중 엔진 시동이 이루어지는 것을 특징으로 한다.Preferably, the power of the first motor is transmitted to the engine while the first clutch of the DCT is engaged and the first synchronizer is released out of the EV1 or EV2 mode, so that the engine is started during running .

본 발명의 동력 전달 시스템의 작동 모드 중 또 다른 하나로서, 상기 제1모터 또는 제2모터가 선택적으로 구동되거나 모두 구동됨과 함께 DCT의 제1클러치 및 제2클러치가 결합된 상태에서 제1싱크로나이저가 DCT의 출력축과 결합되면 엔진 동력이 제1싱크로나이저 및 DCT의 출력축을 통해 주행 휠로 전달되고, 제2싱크로나이저가 DCT의 출력축과 결합되면 엔진 동력이 제2싱크로나이저 및 DCT의 출력축을 통해 주행 휠로 전달되는 HEV 모드가 구현되는 것을 특징으로 한다.As another mode of operation of the power transmission system of the present invention, when the first motor or the second motor is selectively driven or both are driven and the first clutch and the second clutch of the DCT are engaged, The engine power is transmitted to the traveling wheel through the output shaft of the first synchronizer and the DCT. When the second synchronizer is engaged with the output shaft of the DCT, the engine power is transmitted through the output shaft of the second synchronizer and the DCT And an HEV mode to be transmitted to the wheel is implemented.

바람직하게는, 상기 엔진 동력이 제2싱크로나이저 및 DCT의 출력축을 통해 주행 휠로 전달될 때, 제1클러치가 결합 해제되는 동시에 제1DCT 축에 장착된 제1싱크로나이저가 DCT 출력축과 결합 해제되면, 상기 제1모터의 발전 동력이 배터리로 충전되는 것을 특징으로 한다.Preferably, when the engine power is transmitted to the traveling wheel through the output shaft of the second synchronizer and the DCT, when the first clutch is disengaged and the first synchronizer mounted on the first DCT shaft is disengaged from the DCT output shaft, And the power generation power of the first motor is charged by the battery.

한편, 상기 주행 휠로 동력을 출력하는 주행 중, 제동시 제2모터 또는 제1 및 제2모터에 의한 회생 제동이 이루어지는 것을 특징으로 한다.
On the other hand, the regenerative braking is performed by the second motor or the first and second motors during braking during running that outputs power to the traveling wheel.

상기한 과제 해결 수단을 통하여, 본 발명은 다음과 같은 효과를 제공한다.Through the above-mentioned means for solving the problems, the present invention provides the following effects.

첫째, 기존에 단일의 대용량 모터를 2개의 소용량 모터로 대체하여, CD 모드(Charge Depleting Mode, 방전운행모드) 운행시의 대용량 모터와 같은 동력을 출력할 수 있을 뿐만 아니라, EV 주행모드에서의 고효율화 실현 즉, 저/중부하에서의 모터 구동 효율을 향상시킬 수 있다.First, it is possible to replace the single large capacity motor with two small capacity motors to output the same power as the large capacity motor in the CD mode (Charge Depleting Mode), and to achieve high efficiency in the EV driving mode That is, it is possible to improve the motor drive efficiency under low / heavy load.

둘째, CS 모드(Charge Sustaining Mode, 배터리 에너지 유지 운행 모드)의 경우에도 모터 효율의 상대적 개선 및 동력 전달계 경로 손실 저감을 실현할 수 있고, 시동성 확보에도 용이한 장점이 있다.Second, even in the case of the CS mode (Charge Sustaining Mode, battery energy maintenance operation mode), relative improvement of the motor efficiency and path loss reduction of the power transmission system can be realized, and the startability can be easily obtained.

셋째, 대용량 단일 모터 대비 소용량 2개 모터로 여러 주행모드 대응이 가능하고, 기존 엔진과 모터를 연결하는 엔진 클러치 삭제가 가능하여, 제조 비용 절감을 도모할 수 있다.
Third, it is possible to cope with various driving modes with two small-capacity motors compared with a large-capacity single motor, and it is possible to eliminate the engine clutch connecting the existing engine and the motor, thereby reducing manufacturing cost.

도 1은 종래의 일례에 따른 하이브리드 차량용 동력전달 시스템을 나타낸 동력전달 계통도,
도 2는 본 발명에 따른 하이브리드 차량용 동력 전달 시스템을 나타낸 동력 전달 계통도,
도 3 내지 도 8은 본 발명에 따른 하이브리드 차량용 동력 전달 시스템의 각 작동모드별 동력 흐름도.
도 9는 대용량 단일 모터와 2개의 소용량 모터를 사용한 경우, 모터 고효율 영역을 비교하여 도시한 그래프,1 is a power transmission system diagram showing a power transmission system for a hybrid vehicle according to a conventional example,
2 is a power transmission system diagram showing a power transmission system for a hybrid vehicle according to the present invention,
3 to 8 are power flow diagrams for respective operating modes of the power transmission system for a hybrid vehicle according to the present invention.
9 is a graph showing a comparison of motor high-efficiency regions when using a large-capacity single motor and two small-capacity motors,

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 2개의 소용량 모터와 엔진을 DCT로 연결하여, 다양한 주행 모드를 확보함과 더불어 저/중부하에서의 모터 구동 효율을 향상시킬 수 있도록 한 점에 주안점이 있다.The present invention is directed to connecting two small-capacity motors and an engine with a DCT to secure various driving modes and to improve motor driving efficiency under low / heavy loads.

첨부한 도 2는 본 발명에 따른 하이브리드 차량용 동력 전달 시스템을 나타낸 동력 전달 계통도를 나타낸다.2 is a power transmission system diagram showing a power transmission system for a hybrid vehicle according to the present invention.

도 2에서 보듯이, 본 발명의 하이브리드 차량용 동력 전달 시스템은 동력원으로서 엔진(100)과, 2개의 모터 즉, 배터리(미도시됨)와 충방전 가능하게 연결되는 제1모터(110) 및 제2모터(120), 그리고 엔진과 모터를 동력 전달 가능하게 연결하기 위한 DCT(130)를 포함하여 구성된다.2, the power transmission system for a hybrid vehicle according to the present invention includes an engine 100 as a power source, a first motor 110 connected to two motors, that is, a battery (not shown) so as to be chargeable and dischargeable, A motor 120, and a DCT 130 for power-transmitting the engine and the motor.

상기 DCT(130)는 엔진(100)의 출력축(102)과 결합 또는 해제되는 제1클러치(131) 및 제2클러치(132)를 갖는 듀얼 클러치 변속기로 구비된다.The DCT 130 is provided as a dual clutch transmission having a first clutch 131 and a second clutch 132 which are engaged or disengaged with the output shaft 102 of the engine 100.

상기 DCT(130)의 내부에서 제1클러치(131)는 제1DCT 축(133)과 연결되고, 제2클러치(132)는 제2DCT 축(134)과 연결되며, 또한 상기 제1DCT 축(133)에는 제1싱크로나이저(135)가 장착되고, 제2DCT 축(134)에는 제2싱크로나이저(136)가 장착된다.The first clutch 131 is connected to the first DCT shaft 133 in the DCT 130 and the second clutch 132 is connected to the second DCT shaft 134 and the first DCT shaft 133 is connected to the first clutch 131, And the second synchronizer 136 is mounted on the second DCT shaft 134. The first synchronizer 135 is mounted on the second synchronizer 134,

이때, 상기 DCT(130)는 제1DCT 축(133)에 장착된 제1싱크로나이저(135)와 결합되거나, 제2DCT 축(134)에 장착된 제2싱크로나이저(136)와 결합되어, 주행 휠(140)로 동력을 출력하는 DCT 출력축(137)을 포함한다.The DCT 130 is coupled to the first synchronizer 135 attached to the first DCT shaft 133 or to the second synchronizer 136 mounted to the second DCT shaft 134, And a DCT output shaft 137 for outputting power to the motor 140.

여기서, 상기 제1모터(110)는 제1DCT 축(133) 또는 제2DCT 축(134)에 동력 전달 가능하게 연결되고, 상기 제2모터(120)는 주행 휠(140)과 연결되는 상기 DCT 출력축(137)에 동력 전달 가능하게 연결된다.The first motor 110 is connected to the first DCT shaft 133 or the second DCT shaft 134 in a power transmitting manner and the second motor 120 is connected to the DCT output shaft (137).

첨부한 도 9의 그래프를 참조하면, 대용량 단일 모터를 사용하는 경우, 고효율 영역은 통상의 도심 및 고속도로(City + Hwy) 상황에서의 모터 운전점보다 높은 영역에 위치하게 된다.Referring to the accompanying graph of FIG. 9, when a large-capacity single motor is used, the high-efficiency region is located in a region higher than the motor operating point in the normal city and highway (City + Hwy) situations.

이에, 고출력 대용량의 단일 모터는 EV 주행 모드를 기준으로 하는 경우, 저/중부하 주행 영역에서 주로 구동되므로, 결국 저/중부하 주행시 모터가 고효율 영역에서 운전되지 않는 비효율적인 측면이 있다.Therefore, when a single motor with a large output and a large capacity is driven mainly in the low / heavy load driving region when the EV driving mode is used as a reference, there is an inefficiency in which the motor is not operated in a high efficiency region during low / heavy load driving.

반면, 본 발명에서 기존 고효율의 대용량 단일모터를 배제하고, 소용량의 제1모터와 제2모터 등 두 개의 모터를 적용하여, 제1모터 및 제2모터의 고효율 영역을 활용하여 EV 주행 모드가 구현될 수 있다.On the other hand, in the present invention, the EV driving mode is implemented by using the high efficiency region of the first motor and the second motor by applying two motors, such as the first and second motors of small capacity, .

또한, 상기 제2모터만을 이용한 EV 주행시 제2모터의 출력이 곧바로 주행 휠로 전달되므로, 동력의 경로 손실을 저감할 수 있다.Further, since the output of the second motor is directly transmitted to the traveling wheel during EV traveling using only the second motor, the power path loss can be reduced.

이와 같이, 본 발명에 따르면 기존에 단일의 대용량 모터를 상기한 제1 및 제2 모터를 포함하는 2개의 소용량 모터로 대체하여, CD 모드(Charge Depleting Mode, 방전운행모드) 운행시의 대용량 모터와 같은 동력을 출력할 수 있을 뿐만 아니라, EV 주행모드에서의 고효율화 실현 즉, 저/중부하에서의 모터 구동 효율을 향상시킬 수 있고, 동력 전달계 경로 손실 저감을 실현할 수 있다.As described above, according to the present invention, by replacing a single large-capacity motor with two small-capacity motors including the first and second motors, it is possible to provide a large-capacity motor in the CD mode (Charge Depleting Mode) It is possible not only to output the same power but also to realize the high efficiency in the EV traveling mode, that is, to improve the motor driving efficiency under low / heavy load, and to realize the reduction of the path loss of the power transmission system.

여기서, 본 발명에 따른 하이브리드 차량용 동력전달시스템에 대한 각 작동모드 및 주행모드를 살펴보면 다음과 같다.Hereinafter, each operation mode and driving mode of the power transmission system for a hybrid vehicle according to the present invention will be described.

먼저, 본 발명의 일 실시예로서 DCT(130)의 제1DCT 축(133)에 장착된 제1싱크로나이저(135)는 홀수 변속단을 위해 선정되고, 제2DCT 축(134)에 장착된 제2싱크로나이저(136)는 짝수 변속단을 위해 선정된 것으로 가정한다.The first synchronizer 135 mounted on the first DCT shaft 133 of the DCT 130 is selected for the odd speed change stage and the second synchronizer 135 mounted on the second DCT shaft 134, It is assumed that the synchronizer 136 is selected for the even gear.

차량 정지 상태에서의 엔진 시동Starting the engine when the vehicle is stationary

첨부한 도 3은 차량 정지 상태에서 엔진 시동이 이루어지는 동력 흐름도를 나타내며, 차량의 주행 중 정지 상태에서 엔진 시동 및 엔진 구동에 따른 발전이 이루어질 수 있다.FIG. 3 attached hereto shows a power flow chart in which the engine is started in the vehicle stop state, and the engine startup and engine drive can be performed in the stop state while the vehicle is running.

차량의 주행 중 정지 상태에서 DCT(130)의 제1클러치(131)가 결합되고, 제1싱크로나이저(135)가 DCT 출력축(137)과 결합 해제된 상태에서 제1DCT 축(133)과 연결된 제1모터(110)가 단독 구동되면, 제1모터(110)의 동력이 제1DCT 축(133)과 제1클러치(131)를 통해 엔진(100)으로 전달되어 엔진 시동이 이루어진다.The first clutch 131 of the DCT 130 is engaged while the first synchronizer 135 is disengaged from the DCT output shaft 137 while the first synchronizer 135 is disengaged from the DCT output shaft 137, The power of the first motor 110 is transmitted to the engine 100 through the first DCT shaft 133 and the first clutch 131 to start the engine.

엔진(100) 시동 후, 제1모터(110)를 정지시킴과 함께 엔진(100)의 동력이 제1클러치(131) 및 제1DCT 축(133)을 통하여 제1모터(110)로 입력됨으로써, 제1모터(110)가 엔진 동력에 의하여 발전기로서 작동을 하게 되고, 이에 제1모터(110)의 발전 작동에 따른 배터리 충전이 이루어질 수 있다.The power of the engine 100 is input to the first motor 110 through the first clutch 131 and the first DCT shaft 133 after the engine 100 is started and the first motor 110 is stopped, The first motor 110 is operated by the engine power as a generator so that the battery charging according to the power generation operation of the first motor 110 can be performed.

EV1EV1 모드mode

첨부한 도 4는 EV1 모드시 동력 흐름도를 나타낸다.Figure 4 attached is a power flow diagram in the EV1 mode.

도 4에서 보듯이, 본 발명에 따른 EV1 모드는 중/소부하 영역에서 제2모터(120)의 단독 구동력만으로 차량의 주행이 이루어지도록 한 것이다.As shown in FIG. 4, in the EV1 mode according to the present invention, the vehicle is driven only by the single driving force of the second motor 120 in the middle / small load region.

이를 위해, 상기 DCT(130)의 제1클러치(131) 및 제2클러치(132)가 모두 해제되고, 제1싱크로나이저(135) 및 제2싱크로나이저(135)가 각각 DCT 출력축(137)과 결합 해제된 상태에서 제2모터(120)가 단독 구동되면, 제2모터(120)의 동력이 DCT 출력축(137)을 통하여 주행 휠(140)로 직접 출력되는 EV1 모드가 구현된다.The first clutch 131 and the second clutch 132 of the DCT 130 are all released and the first synchronizer 135 and the second synchronizer 135 are connected to the DCT output shaft 137 When the second motor 120 is solely driven in the disengaged state, the EV1 mode in which the power of the second motor 120 is directly output to the traveling wheel 140 through the DCT output shaft 137 is realized.

EV2EV2 모드mode

첨부한 도 5는 EV2 모드시 동력 흐름도를 나타낸다.Figure 5 attached is a power flow diagram in the EV2 mode.

도 5에서 보듯이, 본 발명에 따른 EV2 모드는 고부하 영역에서 제2모터(120)의 동력 및 제1모터(110)의 동력으로 차량의 주행이 이루어지도록 한 것이다.As shown in FIG. 5, in the EV2 mode according to the present invention, the vehicle is driven by the power of the second motor 120 and the power of the first motor 110 in the high load region.

이를 위해, 상기 제2모터(120)의 동력이 DCT 출력축(137)을 통하여 주행 휠(140)로 출력됨과 함께 상기 DCT(130)의 제1클러치(131) 및 제2클러치(132)가 모두 해제되고 제1싱크로나이저(135)가 DCT 출력축(137)과 결합된 상태에서 제1모터(110)가 구동되면, 제2모터(120)의 동력 외에 제1모터(110)의 동력까지 차량의 주행 휠(140)로 출력되는 EV2 모드가 구현된다.The power of the second motor 120 is outputted to the traveling wheel 140 through the DCT output shaft 137 and the first and second clutches 131 and 132 of the DCT 130 are both When the first motor 110 is driven in a state where the first synchronizer 135 is disengaged and the first synchronizer 135 is coupled to the DCT output shaft 137, the power of the first motor 110, in addition to the power of the second motor 120, The EV2 mode output to the traveling wheel 140 is implemented.

주행 중 엔진 시동Starting engine while driving

첨부한 도 6은 주행 중 엔진 시동시 동력 흐름도를 나타낸다.FIG. 6 attached herewith shows a power flow chart when the engine is started during running.

상기한 EV1 또는 EV2 모드 중, DCT(130)의 제1클러치(131)가 결합되고, 제1싱크로나이저(135)가 DCT 출력축(137)과 결합 해제된 상태에서 제1모터(110)의 동력이 엔진(100)으로 전달되어, 주행 중 엔진 시동이 이루어질 수 있다.When the first clutch 131 of the DCT 130 is engaged and the first synchronizer 135 is disengaged from the DCT output shaft 137 out of the EV1 or EV2 modes described above, Is transmitted to the engine 100, and the engine can be started during driving.

HEVHEV 모드mode

첨부한 도 7은 HEV 주행 모드시 동력 흐름도를 나타낸다.FIG. 7 attached herewith shows a power flow chart in the HEV running mode.

상기 DCT(130)의 제1클러치(131) 및 제2클러치(132)가 결합된 상태에서 제1DCT 축(133)에 장착된 제1싱크로나이저(135)가 DCT 출력축(137)과 결합되면(홀수 변속단이 결합되면), 엔진 동력이 제1클러치(131)와 제1싱크로나이저(135)와 DCT 출력축(137)을 통해 주행 휠(140)로 출력된다.When the first synchronizer 135 mounted on the first DCT shaft 133 is engaged with the DCT output shaft 137 in a state where the first clutch 131 and the second clutch 132 of the DCT 130 are engaged The engine power is output to the traveling wheel 140 through the first clutch 131, the first synchronizer 135, and the DCT output shaft 137. In this case,

또는, 상기 DCT(130)의 제1클러치(131) 및 제2클러치(132)가 결합된 상태에서 제2DCT 축(134)에 장착된 제2싱크로나이저(136)가 DCT 출력축(137)과 결합되면(짝수 변속단이 결합되면), 엔진 동력이 제2클러치(132)와 제2싱크로나이저(136)와 DCT 출력축(137)을 통해 주행 휠(140)로 출력된다.The second synchronizer 136 mounted on the second DCT shaft 134 may be coupled to the DCT output shaft 137 in a state where the first clutch 131 and the second clutch 132 of the DCT 130 are engaged. The engine power is output to the traveling wheel 140 through the second clutch 132, the second synchronizer 136, and the DCT output shaft 137 (when the even gear positions are engaged).

이와 함께, 상기 제1모터(110)의 동력이 제1DCT 축(133)과, 제1싱크로나이저(135)와 DCT 출력축(137)을 통해 주행 휠(140)로 전달되고, 또한 제2모터(120)의 동력이 DCT 출력축(137)을 통해 주행 휠(140)로 전달되면, 엔진 동력 외에 제1모터 및 제2모터가 보조 동력으로서 복합 출력되는 HEV 모드가 구현된다.The power of the first motor 110 is transmitted to the traveling wheel 140 through the first DCT shaft 133 and the first synchronizer 135 and the DCT output shaft 137, 120 is transmitted to the traveling wheel 140 via the DCT output shaft 137, an HEV mode is realized in which the first motor and the second motor are combined and output as auxiliary power in addition to the engine power.

이때, 상기 DCT(130)의 제2클러치(132)가 결합 유지되고, 제2DCT 축(134)에 장착된 제2싱크로나이저(136)는 DCT 출력축(137)과 결합 유지된 상태에서 제1클러치(131)가 결합 해제되는 동시에 제1DCT 축(133)에 장착된 제1싱크로나이저(135)가 DCT 출력축(137)과 결합 해제되면, 상기 제1모터(110)는 발전기로서 구동하여 배터리 충전이 이루어질 수 있다.At this time, the second clutch 132 of the DCT 130 is coupled and held, and the second synchronizer 136 mounted on the second DCT shaft 134 is coupled and held with the DCT output shaft 137, The first motor 110 is disengaged and the first synchronizer 135 attached to the first DCT shaft 133 is disengaged from the DCT output shaft 137. The first motor 110 is driven as a generator, Lt; / RTI >

회생제동모드Regenerative braking mode

첨부한 도 8은 회생제동시 동력 흐름을 나타낸다.Figure 8 shows power flow during regenerative braking.

상기한 각 주행모드(EV1, EV2, HEV)에서 제동이 이루어지면, 상기 제2모터(120)를 이용한 회생제동이 이루어지고, 이에 제2모터(120)는 제동시 발전 기능을 수행하여 배터리에 대한 충전이 이루어질 수 있다.When braking is performed in each of the traveling modes EV1, EV2, and HEV, regenerative braking is performed using the second motor 120, and the second motor 120 performs a power generation function during braking, The charging can be performed.

이때, 제동량이 큰 경우에는 상기 제1모터(110)를 추가로 이용하여 회생제동이 이루어지도록 한다.
At this time, when the braking amount is large, regenerative braking is performed using the first motor 110 additionally.

100 : 엔진
102 : 출력축
110 : 제1모터
120 : 제2모터
130 : DCT
131 : 제1클러치
132 : 제2클러치
133 : 제1DCT 축
134 : 제2DCT 축
135 : 제1싱크로나이저
136 : 제2싱크로나이저
137 : DCT 출력축
140 : 주행 휠100: engine
102: Output shaft
110: first motor
120: second motor
130: DCT
131: first clutch
132: Second clutch
133: 1st DCT axis
134: second 2DCT axis
135: First synchronizer
136: Second synchronizer
137: DCT output shaft
140: traveling wheel

Claims (9)

엔진;
상기 엔진의 출력축과 연결되는 DCT;
상기 DCT의 제1DCT 축 또는 제2DCT 축에 동력 전달 가능하게 연결되는 제1모터; 및
주행 휠과 연결되는 상기 DCT의 출력축에 동력 전달 가능하게 연결되는 제2모터; 를 포함하되,
상기 DCT는:
엔진의 출력축과 연결되는 제1클러치 및 제2클러치;
제1클러치와 연결되는 제1DCT 축 및 제2클러치와 연결되는 제2DCT 축;
제1DCT 축에 장착된 제1싱크로나이저와 결합되거나 제2DCT 축에 장착된 제2싱크로나이저와 결합되어, 주행 휠로 동력을 출력하는 DCT 출력축;
으로 구성된 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
engine;
A DCT connected to an output shaft of the engine;
A first motor connected to the first DCT shaft or the second DCT shaft of the DCT so as to transmit power; And
A second motor connected to the output shaft of the DCT connected to the traveling wheel so as to transmit power; , ≪ / RTI &
The DCT includes:
A first clutch and a second clutch that are connected to an output shaft of the engine;
A first DCT shaft connected to the first clutch and a second DCT shaft connected to the second clutch;
A DCT output shaft coupled to a first synchronizer mounted on a first DCT shaft or coupled to a second synchronizer mounted on a second DCT shaft and outputting power to the driving wheel;
And a power transmission system for a hybrid vehicle.
청구항 1에 있어서,
상기 DCT의 제1클러치가 결합되고, 제1싱크로나이저가 해제된 상태에서 제1모터가 단독 구동되면, 제1모터의 동력이 엔진으로 전달되어 엔진 시동이 이루어지고, 엔진 시동에 따른 제1모터의 발전 동력이 배터리로 충전되도록 한 정지 중 시동/발전 모드가 구현되는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
The method according to claim 1,
When the first motor of the DCT is engaged and the first synchronizer is released and the first motor is driven alone, the power of the first motor is transmitted to the engine to start the engine, and the first motor And a starting / power generating mode for stopping the generator is implemented so that the generator power of the generator is charged by the battery.
청구항 1에 있어서,
상기 DCT의 제1클러치 및 제2클러치가 모두 해제된 상태에서 제2모터의 단독 구동에 의한 구동력이 주행 휠로 직접 출력되는 EV1 모드가 구현되는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
The method according to claim 1,
Wherein the EV1 mode is implemented in which the driving force by the single drive of the second motor is directly output to the traveling wheels in a state where both the first clutch and the second clutch of the DCT are released.
청구항 1에 있어서,
상기 DCT의 제1싱크로나이저가 DCT의 출력축과 결합된 상태에서 제1모터 및 제2모터가 구동되면, 제1모터 및 제2모터의 동력이 동시에 주행 휠로 출력되는 EV2 모드가 구현되는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
The method according to claim 1,
When the first motor and the second motor are driven in a state where the first synchronizer of the DCT is coupled to the output shaft of the DCT, the power of the first motor and the power of the second motor are simultaneously output to the traveling wheels. Power transmission system for a hybrid vehicle.
청구항 3에 있어서,
상기 EV1 모드 중, DCT의 제1클러치가 결합되고, 제1싱크로나이저가 해제된 상태에서 제1모터의 동력이 엔진으로 전달되어, 주행 중 엔진 시동이 이루어지는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
The method of claim 3,
Wherein the power of the first motor is transmitted to the engine in a state where the first clutch of the DCT is engaged and the first synchronizer is released, and the engine is started while the vehicle is running.
청구항 1에 있어서,
상기 제1모터 또는 제2모터가 선택적으로 구동되거나 모두 구동됨과 함께 DCT의 제1클러치 및 제2클러치가 결합된 상태에서 제1싱크로나이저가 DCT의 출력축과 결합되면 엔진 동력이 제1싱크로나이저 및 DCT의 출력축을 통해 주행 휠로 전달되고, 제2싱크로나이저가 DCT의 출력축과 결합되면 엔진 동력이 제2싱크로나이저 및 DCT의 출력축을 통해 주행 휠로 전달되는 HEV 모드가 구현되는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
The method according to claim 1,
When the first synchronizer and the second motor are selectively driven or all of them are driven together and the first synchronizer is engaged with the output shaft of the DCT in a state where the first clutch and the second clutch of the DCT are engaged, And the second synchronizer is coupled to the output shaft of the DCT, and when the second synchronizer is coupled to the output shaft of the DCT, the engine power is transmitted to the traveling wheel through the output shaft of the second synchronizer and the DCT. Delivery system.
청구항 6에 있어서,
상기 엔진 동력이 제2싱크로나이저 및 DCT의 출력축을 통해 주행 휠로 전달될 때, 제1클러치가 결합 해제되는 동시에 제1DCT 축에 장착된 제1싱크로나이저가 DCT 출력축과 결합 해제되면, 상기 제1모터의 발전 동력이 배터리로 충전되는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.
The method of claim 6,
When the engine power is transmitted to the traveling wheel through the output shaft of the second synchronizer and the DCT, when the first clutch is disengaged and the first synchronizer mounted on the first DCT shaft is disengaged from the DCT output shaft, Is charged with a battery. ≪ RTI ID = 0.0 > [10] < / RTI >
청구항 1에 있어서,
상기 주행 휠로 동력을 출력하는 주행 중, 제동시 제2모터 또는 제1 및 제2모터에 의한 회생 제동이 이루어지는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.The method according to claim 1,
And a regenerative braking by the second motor or the first and second motors is performed during braking while the vehicle is running to output power with the traveling wheel. 청구항 4에 있어서,
상기 EV2 모드 중, DCT의 제1클러치가 결합되고, 제1싱크로나이저가 해제된 상태에서 제1모터의 동력이 엔진으로 전달되어, 주행 중 엔진 시동이 이루어지는 것을 특징으로 하는 하이브리드 차량용 동력 전달 시스템.The method of claim 4,
Wherein the power of the first motor is transmitted to the engine in a state where the first clutch of the DCT is engaged and the first synchronizer is released from among the EV2 modes and the engine is started during the running.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN110385978A (en) * 2019-07-23 2019-10-29 无锡明恒混合动力技术有限公司 A kind of the extended-range hybrid dynamic system and the mixed electrical automobile of extended-range of integrated-type
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WO2023232062A1 (en) * 2022-05-31 2023-12-07 比亚迪股份有限公司 Hybrid power assembly and vehicle

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