KR101755940B1 - Drive system of hybrid electric vehicle - Google Patents

Drive system of hybrid electric vehicle Download PDF

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KR101755940B1
KR101755940B1 KR1020150178271A KR20150178271A KR101755940B1 KR 101755940 B1 KR101755940 B1 KR 101755940B1 KR 1020150178271 A KR1020150178271 A KR 1020150178271A KR 20150178271 A KR20150178271 A KR 20150178271A KR 101755940 B1 KR101755940 B1 KR 101755940B1
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South Korea
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motor
clutch
engine
planetary gear
power
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KR1020150178271A
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Korean (ko)
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KR20170070581A (en
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최무룡
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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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • 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
    • B60K6/36—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 transmission gearings
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • 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
    • 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

Abstract

본 발명은 하이브리드 자동차의 구동 시스템에 관한 것으로서, 종래의 E-4WD 시스템에 비해 적은 수의 모터를 이용하여 2WD 뿐만 아니라 4WD 주행이 가능하도록 하는 E-4WD 하이브리드 시스템을 제공하는데 주된 목적이 있는 것이다. 상기한 목적을 달성하기 위해, 전륜을 구동하기 위한 동력을 발생시키는 엔진; 후륜을 구동할 수 있도록 후륜에 동력 전달 가능하게 연결된 제1모터; 상기 엔진과 동력 전달 가능하게 연결된 제2모터; 상기 엔진과 제2모터, 전륜 사이에 개재되어 동력을 전달하는 유성기어장치; 상기 유성기어장치와 전륜 사이에 개재되어 선택적으로 동력을 전달하거나 차단하는 제1클러치; 및 상기 유성기어장치의 회전요소 중 적어도 하나와 차량 내 고정구조물 사이에 개재되어 상기 회전요소를 선택적으로 고정요소로 전환해주는 단속수단을 포함하는 하이브리드 자동차의 구동 시스템이 개시된다.The present invention relates to a driving system of a hybrid vehicle, and its main object is to provide an E-4WD hybrid system that enables 4WD travel as well as 2WD using a smaller number of motors than a conventional E-4WD system. In order to achieve the above-mentioned object, an engine for generating power for driving a front wheel; A first motor connected to the rear wheel so as to transmit power so as to drive the rear wheel; A second motor connected to the engine so as to be able to transmit power; A planetary gear device interposed between the engine and the second motor and the front wheel to transmit power; A first clutch interposed between the planetary gear set and the front wheel for selectively transmitting or interrupting power; And intermittent means interposed between at least one of the rotary elements of the planetary gear set and the fixed structure in the vehicle for selectively switching the rotary element to a fixed element.

Description

하이브리드 자동차의 구동 시스템{Drive system of hybrid electric vehicle} [0001] The present invention relates to a drive system for a hybrid vehicle,

본 발명은 하이브리드 자동차의 구동 시스템에 관한 것으로, 더욱 상세하게는 차량을 주행시키기 위해 엔진과 전기모터를 사용하여 전륜과 후륜을 구동할 수 있는 하이브리드 자동차의 E-4WD 시스템에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a drive system of a hybrid vehicle, and more particularly, to an E-4WD system of a hybrid vehicle capable of driving front wheels and rear wheels using an engine and an electric motor to drive a vehicle.

일반적으로 하이브리드 자동차는 화석연료를 사용하는 내연기관 엔진(ICE:Internal Combustion Engine)과 전기에너지를 사용하는 전기모터를 구동원으로 사용하여 주행하는 차량으로, 주행시 화석연료의 에너지와 전기에너지를 함께 사용할 수 있으므로 배기가스 저감 및 연비 향상이 가능해지는 친환경 자동차이다.In general, a hybrid vehicle is a vehicle that uses an internal combustion engine (ICE) that uses fossil fuel and an electric motor that uses electric energy as a driving source. It can use both energy and electric energy of fossil fuel Therefore, it is an eco-friendly automobile that can reduce exhaust gas and improve fuel efficiency.

하이브리드 자동차의 파워트레인 형태로는 전기모터가 변속기 측에 배치된 TMED(Transmission Mounted Electric Device) 방식이 잘 알려져 있다.As a powertrain type of a hybrid vehicle, a TMED (Transmission Mounted Electric Device) system in which an electric motor is disposed on the transmission side is well known.

통상의 TMED 방식에서는 전기모터의 출력 측에 변속기가 배치되고 엔진과 전기모터 사이에 엔진 클러치가 배치되어, 엔진 클러치의 결합 상태에서 엔진과 전기모터의 동력이 변속기를 통해 구동륜인 전륜에 전달될 수 있도록 되어 있다.In a typical TMED system, a transmission is disposed on the output side of the electric motor, and an engine clutch is disposed between the engine and the electric motor. In the engaged state of the engine clutch, the power of the engine and the electric motor can be transmitted to the front wheels Respectively.

또한, TMED 방식의 2WD(2 Wheel Drive) 하이브리드 자동차에서는 차량의 두 구동원인 엔진과 전기모터를 구동륜인 전륜 측에 동력 전달 가능하게 함께 배치하고, 차량 주행시 엔진과 전기모터의 토크를 오버레이(Overlay)하여 변속기를 통해 전달하는 방식으로 전륜의 구동토크를 제어한다. In the 2WD (2-wheel drive) hybrid vehicle of the TMED type, the engine and the electric motor, which are two driving motors of the vehicle, are disposed so as to be able to transmit power to the front wheel side of the drive wheel, and the torque of the engine and the electric motor is overlapped, And controls the drive torque of the front wheels in such a manner as to transmit them through the transmission.

도 1은 하이브리드 자동차의 파워트레인 구성을 나타낸 도면으로서, 차량을 구동하는 전기모터(이하 '구동모터'라 칭함)가 변속기 측에 붙어 있는 TMED 방식의 파워트레인 구성을 예시하고 있다. 1 is a diagram showing a power train configuration of a hybrid vehicle, which illustrates a TMED powertrain configuration in which an electric motor (hereinafter referred to as a 'drive motor') for driving a vehicle is attached to the transmission side.

도 1에 나타낸 바와 같이, 하이브리드 자동차의 파워트레인 구성은, 차량 주행을 위한 구동원으로서 직렬로 배치되는 엔진(1)과 구동모터(3), 엔진(1)과 구동모터(3) 사이에 동력을 선택적으로 연결 또는 차단하도록 배치되는 엔진 클러치(2), 엔진(1) 및 구동모터(3)의 동력을 변속하여 구동축으로 전달하는 변속기(4), 엔진(1)과 동력 전달 가능하게 직결된 하이브리드 스타터-제너레이터(HSG:Hybrid Starter and Generator, 이하 'HSG'라 칭함)(5)를 포함한다.1, a power train configuration of a hybrid vehicle is composed of an engine 1 and a drive motor 3 arranged in series as a drive source for driving the vehicle, and a drive motor 3 for driving the engine 1 and the drive motor 3 A transmission 4 for shifting the power of the engine 1 and the drive motor 3 to transmit the power to the drive shaft, a hybrid 4 directly connected to the engine 1 for power transmission, And a hybrid starter and generator (HSG) 5.

이러한 구성에서 엔진 클러치(2)는 결합 및 분리의 선택적인 작동을 통해 차량을 구동하는 두 구동원, 즉 엔진(1)과 구동모터(3) 사이에 동력을 연결하거나 차단하게 된다.In this configuration, the engine clutch 2 is connected or disconnected between the two driving sources for driving the vehicle, that is, between the engine 1 and the driving motor 3 through the selective operation of engagement and disengagement.

상기 구동모터(3)는 차량 주행시 엔진(1)과 함께 또는 단독으로 차량을 구동하는 구동수단으로 사용되며, 차량 제동시나 관성에 의한 타행 주행시에는 구동모터(3)가 발전기로 작동하여 배터리(7)를 충전하는 에너지 회생 모드가 수행된다.The drive motor 3 is used as a drive means for driving the vehicle together with the engine 1 when the vehicle is running, and when the vehicle is braked or driven by inertia, the drive motor 3 operates as a generator, Is performed in the energy regeneration mode.

또한, 차량의 동력원(전력원)이 되는 배터리(7)가 인버터(6)를 통해 차량의 모터, 즉 구동모터(3)와 HSG(5)에 충, 방전 가능하게 연결되는데, 인버터(6)는 구동모터(3)와 HSG(5)의 구동을 위해 배터리(7)의 직류전류를 3상 교류전류로 변환하여 구동모터와 HSG에 인가한다. A battery 7 serving as a power source of the vehicle is charged and discharged to the motor of the vehicle, that is, the drive motor 3 and the HSG 5 through the inverter 6, Converts the direct current of the battery 7 into a three-phase alternating current for driving the drive motor 3 and the HSG 5, and applies the three-phase alternating current to the drive motor and the HSG.

상기 HSG(5)는 시동모터와 발전기가 별도로 장착되는 일반 내연기관 자동차와 달리 하이브리드 자동차에서 시동모터와 발전기의 통합된 기능을 수행하는 장치로서, 구동시 자체 동력을 벨트 및 풀리 등의 동력전달기구를 통해 엔진(1)에 전달하여 엔진을 시동하거나, 엔진(1)에서 전달되는 회전력으로 발전을 수행하며, 발전 작동시 생성되는 전기에너지로 배터리(7)를 충전한다.The HSG 5 is an apparatus that performs an integrated function of a starter motor and a generator in a hybrid vehicle unlike a conventional internal combustion engine vehicle in which a starter motor and a generator are separately mounted. To the engine (1) to start the engine, to generate electric power by the rotational force transmitted from the engine (1), and to charge the battery (7) with electric energy generated in the power generation operation.

한편, 도 1과 같은 하이브리드 자동차 구동 시스템은 전륜을 구동륜으로 하는 2WD(2 Wheel Drive) 시스템으로 구현될 수 있고, 도 2는 이러한 2WD 시스템을 개략적으로 도시한 것이다.Meanwhile, the hybrid vehicle driving system as shown in FIG. 1 can be implemented as a 2WD (2-wheel drive) system having front wheels as driving wheels, and FIG. 2 schematically shows such a 2WD system.

또한, 상기와 같은 2WD 전륜 구동 차량의 구동 시스템을 기반으로 하는 4륜 구동(4WD:4 Wheel Drive) 하이브리드 자동차의 구동 시스템이 제시된 바 있다.Further, a drive system of a 4WD (4WD) hybrid vehicle based on the drive system of the 2WD front wheel drive vehicle has been proposed.

도 3은 종래기술에 따른 E-4WD 시스템의 구성을 간략히 도시한 도면으로, 도시된 바와 같이 기계적 동력장치 부분인 프로펠러 샤프트를 제거하고, 전륜(F) 측 구동원인 엔진(1)과 구동모터(MG1:3)에 더하여 후륜(R)에 구동모터(MG2:9)를 추가로 장착하여 E-4WD(Electric-4WD) 기능을 구현한다.FIG. 3 is a view schematically showing a configuration of an E-4WD system according to the related art. As shown in FIG. 3, a propeller shaft, which is a mechanical power unit, is removed and an engine 1 and a drive motor 4WD (Electric-4WD) function by additionally mounting a drive motor MG2: 9 to the rear wheel R in addition to the MG1: MG1: 3.

상기와 같이 E-4WD 시스템이 적용된 하이브리드 자동차는 전륜(F)과 후륜(R)에 각각 독립적인 구동수단을 가지고 있으며, 각각의 구동수단이 주행 조건에 따라 독립적으로 구동되거나 함께 구동될 수 있다.As described above, the hybrid vehicle to which the E-4WD system is applied has independent driving means for the front wheel F and the rear wheel R, and each driving means can be independently driven or driven together according to driving conditions.

이와 같은 E-4WD 시스템은 기존의 2WD 시스템에서 큰 변경 없이 후륜 모터(9)를 추가하는 것으로 4WD 기능을 구현할 수 있으므로 개발이 용이하다는 장점이 있다.Such an E-4WD system is advantageous in that it can be easily developed since the 4WD function can be implemented by adding the rear wheel motor 9 without major modification in the existing 2WD system.

그러나, 2WD 시스템에 후륜 구동을 위한 모터, 즉 후륜 모터(9)를 추가로 장착하여 E-4WD 시스템을 구현하고 있으므로 전륜 모터(MG1:3)와 HSG(5)의 모터 2개와 후륜 모터(MG2:9) 1개를 포함하여 총 3개의 모터를 필요로 하므로 불필요한 원가 상승 및 중량 증가가 발생한다.However, since the E-4WD system is implemented by additionally mounting the rear wheel motor 9 for the rear wheel drive in the 2WD system, the two motors of the front wheel motor MG1: 3 and the HSG 5 and the rear wheel motor MG2 : 9), a total of three motors are required, thus unnecessary cost increase and weight increase occur.

특히, 기존의 2WD 하이브리드 구동 시스템을 최적화하여 변경하지 아니하고 후륜 구동을 위한 모터(9)로 전륜 모터(3)와 마찬가지로 대용량 모터를 사용하으며, 따라서 전, 후륜 모터(3,9)의 기능 중복(Redundancy) 등으로 인해 원가 및 중량 상승의 문제점이 나타나고 있다.
In particular, the conventional 2WD hybrid drive system does not change and optimizes and uses a large-capacity motor as in the case of the front wheel motor 3 for the rear wheel drive 9, (Redundancy), etc., are showing problems of cost and weight increase.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 창출한 것으로서, 종래의 E-4WD 시스템에 비해 적은 수의 모터를 이용하여 2WD 뿐만 아니라 4WD 주행이 가능하도록 하는 하이브리드 자동차의 구동 시스템을 제공하는데 그 목적이 있다.
SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a drive system for a hybrid vehicle that enables 4WD travel as well as 2WD using a smaller number of motors than a conventional E-4WD system. There is a purpose.

상기한 목적을 달성하기 위하여, 본 발명에 따르면, 전륜을 구동하기 위한 동력을 발생시키는 엔진; 후륜을 구동할 수 있도록 후륜에 동력 전달 가능하게 연결된 제1모터; 상기 엔진과 동력 전달 가능하게 연결된 제2모터; 상기 엔진과 제2모터, 전륜 사이에 개재되어 동력을 전달하는 유성기어장치; 상기 유성기어장치와 전륜 사이에 개재되어 선택적으로 동력을 전달하거나 차단하는 제1클러치; 및 상기 유성기어장치의 회전요소 중 적어도 하나와 차량 내 고정구조물 사이에 개재되어 상기 회전요소를 선택적으로 고정요소로 전환해주는 단속수단을 포함하는 하이브리드 자동차의 구동 시스템을 제공한다.In order to achieve the above object, according to the present invention, there is provided an engine for generating power for driving a front wheel; A first motor connected to the rear wheel so as to transmit power so as to drive the rear wheel; A second motor connected to the engine so as to be able to transmit power; A planetary gear device interposed between the engine and the second motor and the front wheel to transmit power; A first clutch interposed between the planetary gear set and the front wheel for selectively transmitting or interrupting power; And intermittent means interposed between at least one of the rotary elements of the planetary gear set and the fixed structure in the vehicle for selectively switching the rotary elements to the fixed elements.

바람직한 실시예에서, 상기 엔진의 회전축이 유성기어장치의 캐리어에 동력 전달 가능하게 연결되고, 상기 제2모터의 회전축이 유성기어장치의 선기어에 동력 전달 가능하게 연결되며, 전륜의 구동축이 상기 제1클러치를 개재한 상태로 유성기어장치의 링기어에 동력 전달 가능하게 연결된 구성을 가질 수 있다.In a preferred embodiment, the rotary shaft of the engine is connected to the carrier of the planetary gear set so as to be able to transmit power, the rotary shaft of the second motor is connected to the sun gear of the planetary gear set so as to transmit power, And may be connected to the ring gear of the planetary gear set so as to be able to transmit power with the clutch interposed therebetween.

또한, 상기 단속수단은, 상기 유성기어장치의 링기어와 차량 내 고정구조물 사이에는 개재되는 제2클러치; 및 상기 유성기어장치의 캐리어와 차량 내 고정구조물 사이에 개재되는 제3클러치를 포함하는 것일 수 있다.Further, the intermittent means includes a second clutch interposed between the ring gear of the planetary gear set and the in-vehicle fixed structure; And a third clutch interposed between the carrier of the planetary gear set and the fixed structure in the vehicle.

또한, 상기한 본 발명의 구동 시스템은, 차량의 주행 모드 중 하나로서, 제1클러치를 결합하고, 제2클러치 및 제3클러치는 분리하며, 엔진과 제1모터를 구동하여, 유성기어장치를 통해 전륜 구동축과 제2모터에 전달되는 엔진 동력에 의해 제2모터가 발전기로 작동하는 동시에 전륜이 구동되고 제1모터에 의해 후륜이 구동되는 4륜 구동 파워 스플릿 모드를 가진다.The drive system of the present invention described above is one of the running modes of the vehicle. The first clutch is engaged, the second clutch and the third clutch are disengaged, the engine and the first motor are driven, And a four-wheel drive power split mode in which the second motor is operated as a generator and the front wheels are driven by the engine power transmitted to the front wheel drive shaft and the second motor, and the rear wheels are driven by the first motor.

또한, 상기한 본 발명의 구동 시스템은, 차량의 주행 모드 중 하나로서, 제2클러치를 결합하고, 제1클러치 및 제3클러치는 분리하며, 엔진과 제1모터를 구동하여, 상기 유성기어장치를 통해 전달되는 엔진 동력에 의해 제2모터가 발전기로 작동되고 상기 제1모터에 의해 후륜이 구동되는 직렬 모드를 가진다.The drive system of the present invention described above is one of the running modes of the vehicle. The drive system includes a second clutch, a first clutch and a third clutch, and drives the engine and the first motor, The second motor is operated as a generator by the engine power transmitted through the first motor, and the rear wheel is driven by the first motor.

또한, 상기한 본 발명의 구동 시스템은, 차량의 주행 모드 중 하나로서, 제1클러치 및 제3클러치를 결합하고, 제2클러치는 분리하여, 전륜으로부터 유성기어장치를 통해 제2모터에 회전력이 전달되면서 제2모터에 의한 회생 제동이 이루어지는 동시에 후륜으로부터 제1모터에 회전력이 전달되면서 제1모터에 의한 에너지 회생이 이루어지는 회생 모드를 가진다.The driving system of the present invention described above is one of the running modes of the vehicle in which the first clutch and the third clutch are engaged and the second clutch is disengaged so that the rotational force is transmitted from the front wheels to the second motor via the planetary gear set And a regenerative mode in which regenerative braking by the second motor is performed while the rotational force is transmitted from the rear wheel to the first motor and energy is regenerated by the first motor.

또한, 상기한 본 발명의 구동 시스템은, 차량의 주행 모드 중 하나로서, 제1클러치와 제3클러치를 결합하고, 제2클러치는 분리하며, 제1모터와 제2모터를 모두 구동하여, 제1모터에 의해 후륜이 구동하고 제2모터의 동력이 유성기어장치를 통해 전륜 구동축으로 전달되어 전륜이 구동하는 EV 모드를 가진다.The drive system of the present invention described above is one of the running modes of the vehicle in which the first clutch and the third clutch are engaged and the second clutch is disengaged to drive both the first motor and the second motor, 1 mode in which the rear wheels are driven by the motor and the power of the second motor is transmitted to the front wheel drive shaft through the planetary gear set so that the front wheels are driven.

또한, 상기한 본 발명의 구동 시스템에서는, 상기 제2클러치를 결합하여 유성기어장치의 링기어가 고정요소가 되도록 한 상태에서 상기 제2모터를 구동하여 유성기어장치를 통해 엔진으로 전달되는 제2모터의 동력에 의해 엔진 시동이 이루어질 수 있다.
In the drive system of the present invention, the second clutch is engaged to drive the second motor in a state where the ring gear of the planetary gear set becomes a fixed element, and the second The engine can be started by the power of the motor.

이로써, 본 발명에 따른 하이브리드 자동차의 구동 시스템에 의하면, 후륜을 구동하기 위한 제1모터를 탑재함과 더불어, 엔진과 제2모터, 전륜 구동축 사이에 유성기어장치를 개재하고, 유성기어장치의 구성요소 중 일부를 고정요소로 작동시키기 위한 클러치를 구비함으로써, 모터 2개만으로도 엔진 시동 모드, 파워 스플릿 모드, 엔진 단독 구동 모드, 직렬 모드, 회생 모드, EV 모드 등의 다양한 모드를 구현할 수 있는 것은 물론 4WD 주행까지 구현할 수 있게 된다.Thus, according to the drive system of the hybrid vehicle according to the present invention, the first motor for driving the rear wheels is mounted, and also the planetary gear device is interposed between the engine, the second motor and the front wheel drive shaft, It is possible to implement various modes such as an engine start mode, a power split mode, an engine independent drive mode, a serial mode, a regenerative mode, and an EV mode by using only two motors by providing a clutch for operating some of the elements as fixed elements 4WD driving can be realized.

특히, 정체 구간에서 우수한 연비 효과를 나타내는 직렬 모드가 구현될 수 있음은 물론, 전륜과 후륜이 함께 구동하는 4WD EV 모드가 추가됨으로써 기존의 2WD 하이브리드 시스템과 비교할 때 연비 향상의 효과를 기대할 수 있게 된다.Particularly, a serial mode showing excellent fuel economy effect can be implemented in the stagnation region, and a 4WD EV mode in which the front wheel and the rear wheel are driven together can be added, so that the fuel economy improvement effect can be expected as compared with the conventional 2WD hybrid system .

또한, 모터 3개를 필요로 하는 종래의 E-4WD 시스템에 비해 모터 수를 축소할 수 있으므로 원가 절감 및 중량 저감의 이점이 있게 된다. In addition, since the number of motors can be reduced as compared with a conventional E-4WD system requiring three motors, there is an advantage of cost reduction and weight reduction.

또한, 전륜과 후륜을 모두 이용하여 회생제동을 구현할 수 있게 됨에 따라 연비 향상의 효과가 더욱 증대될 수 있게 된다.
Further, since regenerative braking can be implemented using both the front wheel and the rear wheel, the effect of improving the fuel economy can be further increased.

도 1은 일반적인 하이브리드 자동차의 파워트레인 구성을 예시한 도면이다.
도 2는 종래기술에 따른 2WD 시스템의 구성을 간략히 도시한 도면이다.
도 3은 종래기술에 따른 4WD 시스템의 구성을 간략히 도시한 도면이다.
도 4는 본 발명의 실시예에 따른 하이브리드 자동차용 4WD 구동 시스템의 구성을 나타내는 도면이다.
도 5 내지 도 8은 본 발명의 실시예에 따른 구동 시스템이 적용된 4WD 하이브리드 자동차의 여러 주행 모드를 나타내는 도면이다. 1 is a diagram illustrating a power train configuration of a general hybrid vehicle.
2 is a view schematically showing a configuration of a conventional 2WD system.
3 is a view schematically showing a configuration of a conventional 4WD system.
4 is a diagram illustrating the configuration of a 4WD drive system for a hybrid vehicle according to an embodiment of the present invention.
5 to 8 are views showing various driving modes of a 4WD hybrid vehicle to which a driving system according to an embodiment of the present invention is applied.

이하, 첨부한 도면을 참조하여 본 발명의 실시예에 대해 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

도 4는 본 발명의 실시예에 따른 하이브리드 자동차용 4WD 구동 시스템의 구성을 나타내는 도면이다.4 is a diagram illustrating the configuration of a 4WD drive system for a hybrid vehicle according to an embodiment of the present invention.

도시된 바와 같이, 차량을 구동하는 구동원으로서 엔진(10)과 2개의 모터(9,11)가 탑재된다.As shown in the figure, an engine 10 and two motors 9 and 11 are mounted as a driving source for driving the vehicle.

이 중에서 차량이 전륜(F)을 구동하여 주행할 때 상기 엔진(10)은 전륜(F)을 구동하기 위한 동력을 제공하고, 이때 엔진(10)의 동력이 전륜(F)에 전달될 수 있도록 동력전달기구의 작동이 제어된다.The engine 10 is provided with power for driving the front wheel F so that the power of the engine 10 can be transmitted to the front wheel F. In this case, The operation of the power transmission mechanism is controlled.

또한, 후술하는 바와 같이 직렬 모드에서는 엔진(10)의 동력이 제2모터(11)를 발전기로 작동시키는데 필요한 발전 동력으로 제공되며, 제2모터(11)가 엔진(10)의 동력을 전달받아 발전기로 작동할 때 발생하는 전기에너지는 차량 내 에너지 저장수단인 배터리(도시하지 않음)에 저장된다.As will be described later, the power of the engine 10 is provided as a power generation power required to operate the second motor 11 as a generator in the series mode, and the second motor 11 receives the power of the engine 10 Electric energy generated when operating as a generator is stored in a battery (not shown) which is an energy storage means in the vehicle.

또한, 상기한 2개의 모터 중 하나는 엔진(10)과 동력 전달 가능하게 연결되어 엔진 시동 및 발전을 위해 사용되는 모터(11), 즉 기존의 하이브리드 스타터-제너레이터(HSG)로 사용됨과 더불어 전기차 모드인 EV(Electric Vehicle) 모드에서 전륜(F)에 동력을 제공하여 전륜을 구동하는 모터이고, 다른 하나는 후륜(R)을 구동하기 위한 동력을 제공하도록 사용되는 모터(9), 즉 후륜 모터이다.In addition, one of the two motors is connected to the engine 10 so as to be able to transmit power, and is used as a motor 11 used for engine starting and power generation, that is, as a conventional hybrid starter-generator (HSG) And the other is a motor 9 that is used to provide power for driving the rear wheel R, that is, a rear wheel motor .

이하, 본 명세서에서 후륜 모터(9)를 제1모터(MG1)라 칭하기로 하고, 엔진(10)에 동력 전달 가능하게 연결된 나머지 다른 하나의 모터(11)를 제2모터(MG2)라 칭하기로 한다.Hereinafter, the rear wheel motor 9 will be referred to as a first motor MG1, and the other motor 11 connected to the engine 10 so as to transmit power is referred to as a second motor MG2 do.

먼저, 제1모터(9)는 후륜(R)을 구동하기 위한 모터로서, 구동시 발생하는 동력을 후륜에 전달할 수 있도록 차량에 장착되고, 차량의 에너지 저장수단인 배터리로부터 전력을 공급받아 구동한다.First, the first motor 9 is a motor for driving the rear wheel R. The first motor 9 is mounted on the vehicle so as to transmit the power generated during driving to the rear wheels, and is driven by receiving power from a battery, .

또한, 제2모터(11)는 동력전달기구인 유성기어장치(12)를 통해 엔진(10)과 동력 전달 가능하게 연결되고, 이때 엔진(10)과 제2모터(11), 전륜(F)의 구동축(31) 사이에 유성기어장치(12)가 개재된다.The second motor 11 is connected to the engine 10 through a planetary gear device 12 that is a power transmitting mechanism so as to be capable of transmitting power. The engine 10, the second motor 11, the front wheel F, And the planetary gear device 12 is interposed between the drive shafts 31 of the planetary gear mechanism.

상기 유성기어장치(12)는 통상의 구성대로 선기어(13), 상기 선기어(13)와 외접으로 맞물리는 피니언(14), 상기 피니언(14)과 내접으로 맞물리는 링기어(15), 및 상기 피니언(14)들을 일체로 결합하여 지지하는 캐리어(16)를 포함한다.The planetary gear set 12 includes a sun gear 13, a pinion 14 that externally engages with the sun gear 13, a ring gear 15 meshing internally with the pinion 14, And a carrier 16 which integrally supports the pinions 14 and supports them.

이러한 유성기어기구에서 회전요소는 선기어(13)와 링기어(15), 캐리어(16)가 될 수 있는데, 본 발명의 실시예에서 상기 선기어(13)와 링기어(15)는 선택적으로 고정요소가 될 수 있도록 후술하는 바와 같이 차량 내 고정구조물과 클러치(22,23)를 개재한 상태로 연결된다.In this planetary gear mechanism, the rotary element may be a sun gear 13, a ring gear 15, and a carrier 16, in which the sun gear 13 and the ring gear 15 are alternatively, So as to be connected to the fixed structure in the vehicle with the clutches 22 and 23 interposed therebetween.

또한, 엔진(10)의 회전축이 유성기어장치(12)의 캐리어(16)에 동력 전달 가능하게 연결되고, 제2모터(11)의 회전축은 유성기어장치(12)의 선기어(13)에 동력 전달 가능하게 연결된다.The rotary shaft of the engine 10 is connected to the carrier 16 of the planetary gear set 12 so as to transmit power and the rotary shaft of the second motor 11 is connected to the sun gear 13 of the planetary gear set 12, Respectively.

또한, 전륜(F)의 구동축(31)이 제1클러치(21)를 개재한 상태로 유성기어장치(12)의 링기어(15)에 동력 전달 가능하게 연결된다.The drive shaft 31 of the front wheel F is connected to the ring gear 15 of the planetary gear set 12 via the first clutch 21 so as to transmit power.

이러한 구성에서 도면에는 나타내지 않았으나 제1클러치(21)와 전륜(F)의 구동축(31) 사이에 변속기가 배치될 수 있다. In this configuration, although not shown in the drawings, the transmission may be disposed between the first clutch 21 and the drive shaft 31 of the front wheel F. [

상기 제1클러치(21)는 차량의 구동원과 전륜(F) 사이에 동력을 선택적으로 전달하거나 차단하기 위한 것으로, 보다 상세하게는 유성기어장치(12)의 링기어(15)와 전륜(F)의 구동축(31) 사이에 배치되어 링기어(15)와 구동축(31) 사이의 동력 전달을 단속한다. The first clutch 21 selectively transmits or interrupts power between the driving source of the vehicle and the front wheel F. More specifically, the first clutch 21 is connected to the ring gear 15 and the front wheel F of the planetary gear set 12, And the power transmission between the ring gear 15 and the drive shaft 31 is interrupted.

그리고, 제1모터(9)와 제2모터(11)는 구동시 배터리 전력을 공급받아 구동하고, 회생 모드에서는 상기 두 모터(9,11)가 각각 발전기로 동작하여 배터리를 충전하게 된다.The first motor 9 and the second motor 11 are driven by receiving battery power while the two motors 9 and 11 operate as generators to charge the battery in the regenerative mode.

상기 배터리는 인버터 시스템(도시하지 않음)을 통해 제1모터(9)와 제2모터(11)에 충, 방전 가능하게 연결되고, 인버터 시스템은 제1모터(9)와 제2모터(11)의 구동을 위해 배터리의 직류 전류를 3상 교류 전류로 변환하여 각 모터(9,11)에 인가한다.The battery is charged and discharged to the first motor 9 and the second motor 11 through an inverter system (not shown), and the inverter system includes a first motor 9 and a second motor 11, Phase alternating current to apply to the respective motors 9 and 11 in order to drive the motor.

또한, 제2모터(11)가 엔진(10)의 동력을 유성기어장치(12)를 통해 전달받아 발전기로 작동할 경우 발전시 생성되는 전기에너지는 인버터 시스템을 통해 배터리로 전달되어 저장되거나(배터리 충전) 제1모터(9)를 구동하는데 사용될 수 있다.In addition, when the second motor 11 receives the power of the engine 10 via the planetary gear set 12 and operates as a generator, electric energy generated at the time of power generation is transmitted to the battery through the inverter system to be stored Charging) the first motor 9. [0050]

또한, 상기 유성기어장치(12)의 회전요소 중 적어도 하나와 차량 내 고정구조물 사이에 개재되어 상기 회전요소를 선택적으로 고정요소로 전환해주는 단속수단이 구비된다.In addition, intermittent means interposed between at least one of the rotary elements of the planetary gear set 12 and the fixed structure in the vehicle for selectively switching the rotary elements to the fixed elements is provided.

상기 단속수단으로서, 유성기어장치(12)의 링기어(15)와 차량 내 고정구조물 사이에는 제2클러치(22)가 개재되고, 유성기어장치(12)의 캐리어(16)와 차량 내 고정구조물 사이에는 제3클러치(23)가 개재된다.The second clutch 22 is interposed between the ring gear 15 of the planetary gear set 12 and the fixed structure in the vehicle and the carrier 16 of the planetary gear set 12 and the in- The third clutch 23 is interposed.

여기서, 차량 내 고정구조물은 유성기어장치(12)를 포함하는 동력전달기구의 하우징 등이 될 수 있다.Here, the fixed structure in the vehicle may be a housing of the power transmission mechanism including the planetary gear set 12, and the like.

상기한 구성에서 제2클러치(22)가 결합되어 닫히게 되면 유성기어장치(12)의 링기어(15)는 고정요소가 되고, 제3클러치(23)가 결합되어 닫히게 되면 유성기어장치(12)의 캐리어(16)가 고정요소가 된다.When the second clutch 22 is engaged and closed, the ring gear 15 of the planetary gear set 12 becomes a fixed element. When the third clutch 23 is engaged and closed, the planetary gear set 12 is closed, Of the carrier 16 becomes a stationary element.

이하, 본 발명의 실시예에 따른 구동 시스템의 작동상태에 대해 설명하면 다음과 같다.Hereinafter, the operating state of the drive system according to the embodiment of the present invention will be described.

실시예에 따른 E-4WD 시스템을 탑재한 하이브리드 자동차에서 엔진(10), 제1모터(9), 제2모터(11), 제1클러치(21), 제2클러치(22), 제3클러치(23)의 작동은 미도시된 제어부에 의해 제어되고, 이때 제어부는 하나의 통합된 제어요소가 될 수도 있으나, 복수 개의 차량 내 제어기가 될 수 있다.In the hybrid vehicle equipped with the E-4WD system according to the embodiment, the engine 10, the first motor 9, the second motor 11, the first clutch 21, the second clutch 22, The operation of the control unit 23 is controlled by a control unit (not shown), and the control unit may be a single integrated control unit, but may be a plurality of in-vehicle controllers.

통상의 하이브리드 자동차에서는 엔진과 모터, 클러치 등의 구성요소들을 작동시킴에 있어서 복수 개의 제어기들이 차량으로부터 다양한 정보들을 수집하고 제어기 간에 각종 정보 내지 명령들을 주고받으면서 상기한 구성요소들을 제어하는 협조 제어가 수행되고 있다. In a conventional hybrid vehicle, a plurality of controllers collect various information from the vehicle in operating the components such as the engine, the motor, and the clutch, and perform cooperative control to control the components while exchanging various information and commands among the controllers .

이에 따라, 본 발명에서도 상기한 구성요소들이 차량 제어기(HCU:Hybrid Control Unit), 엔진 제어기(ECU:Engine Control Unit), 모터 제어기(MCU: Motor Control Unit), 배터리 제어기(BMS: Battery Control Unit), 변속 제어기(TCU: Transmission Control Unit) 등의 협조 제어하에 작동 및 제어되도록 할 수 있다.Accordingly, in the present invention, the above-described components may be implemented in a hybrid control unit (HCU), an engine control unit (ECU), a motor control unit (MCU), a battery control unit (BMS) , A transmission control unit (TCU), and the like.

예로서, 제1클러치(21) 및 제2클러치(22), 제3클러치(23)의 작동은 변속 제어기에 의해 제어되도록 구성될 수 있다.By way of example, the operation of the first clutch 21, the second clutch 22, and the third clutch 23 can be configured to be controlled by the shift controller.

작동상태에 대해 상세히 설명하면, 차량에서 엔진(10)과 제2모터(11)는 전술한 바와 같이 전륜(F)을 구동시키는 구동원이고, 제1모터(9)는 후륜(R)을 구동시키는 구동원이다. The engine 10 and the second motor 11 are drive sources for driving the front wheels F as described above and the first motor 9 drives the rear wheels R It is a driving source.

또한, 제2모터(11)는 엔진(10)을 시동하는 것과 더불어 엔진 동력으로 발전을 수행하여 발전시 생성되는 전기에너지로 배터리를 충전하거나 제1모터(9)를 구동시킨다. In addition, the second motor 11 starts the engine 10 and generates power by engine power to charge the battery with electric energy generated at the time of power generation or to drive the first motor 9. [

먼저, 차량 시동시에는 제2클러치(22)가 결합되어 링기어(15)가 고정요소가 되고, 선기어(13)는 입력요소, 그리고 캐리어(16)는 출력요소가 된다.First, at the start of the vehicle, the second clutch 22 is engaged so that the ring gear 15 becomes a stationary element, the sun gear 13 becomes an input element, and the carrier 16 becomes an output element.

이에 제2모터(11)가 구동할 경우 제2모터(11)의 동력이 선기어(13), 피니언(14), 캐리어(16)를 통해 엔진(10)으로 전달되어 엔진 시동이 이루어지게 된다. Accordingly, when the second motor 11 is driven, the power of the second motor 11 is transmitted to the engine 10 through the sun gear 13, the pinion 14, and the carrier 16 to start the engine.

다음으로, 도 5는 파워 스플릿(Power Split) 모드를 나타내는 도면으로, 파워 스플릿 모드에서는 제1클러치(21)를 결합하고, 제2클러치(22) 및 제3클러치(23)는 분리한다.Next, FIG. 5 shows a power split mode. In the power split mode, the first clutch 21 is engaged and the second clutch 22 and the third clutch 23 are disengaged.

또한, 엔진(10)을 구동하며, 이에 엔진(10)의 동력이 유성기어장치(12) 및 제1클러치(21)를 통해 전륜(F)의 구동축(31)으로 전달되면서 전륜(F)이 구동된다.The power of the engine 10 is transmitted to the drive shaft 31 of the front wheel F through the planetary gear set 12 and the first clutch 21 so that the front wheel F .

이와 더불어 엔진(10)의 동력에 의해 제2모터(11)가 발전기로 작동하고, 이때 발전기로 작동하는 제2모터(11)에서 생성되는 전기에너지는 제1모터(9)를 구동시키는데 사용된다.In addition, the second motor 11 operates as a generator by the power of the engine 10, and the electric energy generated by the second motor 11 acting as a generator at this time is used to drive the first motor 9 .

즉, 제2모터(11)에서 생성되는 전기에너지로 제1모터(9)를 구동시켜 후륜(R) 구동을 위한 동력을 발생시키는 것이며, 이로써 차량의 전륜(F)과 후륜(R)이 모두 구동하는 4WD 주행이 이루어질 수 있고, 엔진 동력과 모터 동력을 함께 이용하여 차량이 주행하는 하이브리드 주행이 이루어질 수 있게 된다.That is, the first motor 9 is driven by the electric energy generated by the second motor 11 to generate power for driving the rear wheel R. Thus, both of the front wheel F and the rear wheel R of the vehicle 4WD running can be performed, and the hybrid traveling in which the vehicle travels can be performed by using the engine power and the motor power together.

물론, 제2모터(11)에서 생성되는 전기에너지는 배터리에 저장되도록 하여 배터리의 충전이 이루어지도록 하면서 제1모터(9)의 구동은 중지시켜, 엔진(10)의 동력으로 전륜(F)만을 구동하는 2WD 주행이 이루어지도록 할 수 있다(엔진 단독 모드).Of course, the electric energy generated by the second motor 11 is stored in the battery so that the battery is charged and the first motor 9 is stopped, and only the front wheel F is driven by the engine 10 2WD running can be performed (engine alone mode).

도 6은 직렬(Series) 모드를 나태는 도면으로, 직렬 모드에서는 제2클러치(22)를 결합하고, 제1클러치(21) 및 제3클러치(23)는 분리한다.6 is a diagram showing a series mode. In the serial mode, the second clutch 22 is engaged and the first clutch 21 and the third clutch 23 are disengaged.

또한, 엔진(10)을 구동하여 엔진(10)의 동력이 유성기어장치(12)를 통해 제2모터(11)로 전달되도록 하고, 이에 제2모터(11)가 발전기로 작동한다.Further, the engine 10 is driven so that the power of the engine 10 is transmitted to the second motor 11 through the planetary gear set 12, and the second motor 11 thereby operates as a generator.

상기와 같이 발전기로 작동하는 제2모터(11)에서 생성된 전기에너지는 제1모터(9)를 구동시키는데 사용된다.The electric energy generated in the second motor 11, which operates as a generator as described above, is used to drive the first motor 9.

즉, 엔진(10)의 동력으로 제2모터(11)를 발전기로 작동시키고, 제2모터(11)에서 생성되는 전기에너지로 후륜 모터인 제1모터(9)를 구동하여 후륜(R)의 구동에 의한 2WD 주행이 이루어지도록 하는 것이다.That is, the second motor 11 is operated as a generator by the power of the engine 10 and the first motor 9, which is the rear wheel motor, is driven by the electric energy generated by the second motor 11, So that 2WD travel by driving is performed.

도 7은 회생 모드를 나타내는 도면으로, 회생 모드시에는 제1클러치(21) 및 제3클러치(23)를 결합하고, 제2클러치(22)는 분리한다.7 shows the regenerative mode. In the regenerative mode, the first clutch 21 and the third clutch 23 are engaged and the second clutch 22 is disengaged.

이에 후륜(R)에서 전달되는 동력은 모두 제1모터(9)의 발전 작동에 사용되고, 제1모터(9)에 의해 생성되는 전기에너지가 배터리에 저장되면서 배터리의 충전이 이루어진다.Therefore, all the power transmitted from the rear wheel R is used for the power generation operation of the first motor 9, and the electric energy generated by the first motor 9 is stored in the battery to charge the battery.

또한, 전륜(F)에서 전달되는 동력이 유성기어장치(12)를 통해 제2모터(11)로 전달되면서 제2모터(11)에 의한 회생제동이 이루어지고, 제2모터(11)에 의해 생성되는 전기에너지로 배터리가 충전될 수 있게 된다.The power transmitted from the front wheel F is transmitted to the second motor 11 through the planetary gear set 12 and regenerative braking by the second motor 11 is performed. The battery can be charged with the generated electric energy.

도 8은 EV 모드를 나타내는 도면으로, EV 모드에서는 제1클러치(21)와 제3클러치(23)를 결합하고, 제2클러치(22)는 분리한다.8 shows the EV mode. In the EV mode, the first clutch 21 and the third clutch 23 are engaged, and the second clutch 22 is disengaged.

또한, 제1모터(9)와 제2모터(11)를 모두 구동시키며, 이로써 제1모터(9)의 동력이 후륜(R)으로 전달되고, 제2모터(11)의 동력이 유성기어장치(12)를 통해 전륜(F)으로 전달된다.The power of the first motor 9 is transmitted to the rear wheel R and the power of the second motor 11 is transmitted to the rear wheel R. [ Is transmitted to the front wheel (F) through the front wheel (12).

이로써 차량의 전륜(F)과 후륜(R)이 모두 구동하는 4WD 주행이 이루어질 수 있고, 모터 동력만으로 차량이 주행하는 EV 모드 주행이 이루어질 수 있게 된다.As a result, 4WD travel in which both the front wheel F and the rear wheel R of the vehicle are driven can be performed, and the EV mode travel in which the vehicle travels can be performed only by the motor power.

이와 같이 하여, 본 발명에 따른 하이브리드 자동차의 구동 시스템에 따르면, 후륜(R)을 구동하기 위한 제1모터(9)를 탑재함과 더불어, 엔진(10)과 제2모터(11), 전륜 구동축(31) 사이에 유성기어장치(12)를 개재하고, 유성기어장치(12)의 구성요소 중 일부를 고정요소로 작동시키기 위한 클러치(22,23)를 구비함으로써, 상술한 바와 같이 모터 2개만으로도 엔진 시동 모드, 파워 스플릿 모드, 엔진 단독 구동 모드, 직렬 모드, 회생 모드, EV 모드 등의 다양한 모드를 구현할 수 있는 것은 물론 4WD 주행까지 구현할 수 있게 된다. In this way, according to the drive system of the hybrid vehicle according to the present invention, the first motor 9 for driving the rear wheel R is mounted, and the engine 10, the second motor 11, The planetary gear set 12 is provided with the clutches 22 and 23 for actuating some of the components of the planetary gear set 12 as fixed elements between the two planetary gear sets 12, It is possible to implement various modes such as an engine start mode, a power split mode, an engine independent drive mode, a serial mode, a regenerative mode, and an EV mode, as well as 4WD driving.

특히, 정체 구간에서 우수한 연비 효과를 나타내는 직렬 모드가 구현될 수 있음은 물론, 전륜과 후륜이 함께 구동하는 4WD EV 모드가 추가됨으로써 기존의 2WD 하이브리드 시스템과 비교할 때 연비 향상의 효과를 기대할 수 있게 된다.Particularly, a serial mode showing excellent fuel economy effect can be implemented in the stagnation region, and a 4WD EV mode in which the front wheel and the rear wheel are driven together can be added, so that the fuel economy improvement effect can be expected as compared with the conventional 2WD hybrid system .

또한, 전륜과 후륜을 모두 이용하여 회생제동을 구현할 수 있게 됨에 따라 연비 향상의 효과가 더욱 증대될 수 있게 된다. Further, since regenerative braking can be implemented using both the front wheel and the rear wheel, the effect of improving the fuel economy can be further increased.

이상으로 본 발명의 실시예에 대하여 상세하게 설명하였는바, 본 발명의 권리범위가 이에 한정되는 것이 아니며, 다음의 특허청구범위에서 정의하고 있는 본 발명의 기본 개념을 이용한 당 업자의 여러 변형 및 개량 형태 또한 본 발명의 권리범위에 포함된다.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Forms are also included within the scope of the present invention.

9 : 제1모터 10 : 엔진
11 : 제2모터 12 : 유성기어장치
13 : 선기어 14 : 피니언
15 : 링기어 16 : 캐리어
21 : 제1클러치 22 : 제2클러치
23 : 제3클러치 31: 전륜 구동축
F : 전륜 R : 후륜9: first motor 10: engine
11: second motor 12: planetary gear device
13: sun gear 14: pinion
15: ring gear 16: carrier
21: first clutch 22: second clutch
23: third clutch 31: front wheel drive shaft
F: front wheel R: rear wheel

Claims (8)

전륜을 구동하기 위한 동력을 발생시키는 엔진; 후륜을 구동할 수 있도록 후륜에 동력 전달 가능하게 연결된 제1모터; 상기 엔진과 동력 전달 가능하게 연결된 제2모터; 상기 엔진과 제2모터, 전륜 사이에 개재되어 동력을 전달하는 유성기어장치; 상기 유성기어장치와 전륜 사이에 개재되어 선택적으로 동력을 전달하거나 차단하는 제1클러치; 및 상기 유성기어장치의 회전요소 중 적어도 하나와 차량 내 고정구조물 사이에 개재되어 상기 회전요소를 선택적으로 고정요소로 전환해주는 단속수단을 포함하고,
상기 엔진의 회전축이 유성기어장치의 캐리어에 동력 전달 가능하게 연결되고, 상기 제2모터의 회전축이 유성기어장치의 선기어에 동력 전달 가능하게 연결되며, 전륜의 구동축이 상기 제1클러치를 개재한 상태로 유성기어장치의 링기어에 동력 전달 가능하게 연결되며,
상기 단속수단은, 상기 유성기어장치의 링기어와 차량 내 고정구조물 사이에는 개재되는 제2클러치; 및 상기 유성기어장치의 캐리어와 차량 내 고정구조물 사이에 개재되는 제3클러치를 포함하고,
차량의 주행 모드 중 하나로서,
제1클러치를 결합하고,
제2클러치 및 제3클러치는 분리하며,
엔진과 제1모터를 구동하여,
유성기어장치를 통해 전륜 구동축과 제2모터에 전달되는 엔진 동력에 의해 제2모터가 발전기로 작동하는 동시에 전륜이 구동되고 제1모터에 의해 후륜이 구동되는 4륜 구동 파워 스플릿 모드를 가지는 것을 특징으로 하는 하이브리드 자동차의 구동 시스템.
An engine for generating power for driving front wheels; A first motor connected to the rear wheel so as to transmit power so as to drive the rear wheel; A second motor connected to the engine so as to be able to transmit power; A planetary gear device interposed between the engine and the second motor and the front wheel to transmit power; A first clutch interposed between the planetary gear set and the front wheel for selectively transmitting or interrupting power; And intermittent means interposed between at least one of the rotary elements of the planetary gear set and the fixed structure in the vehicle for selectively switching the rotary element to a fixed element,
Wherein the rotary shaft of the engine is connected to the carrier of the planetary gear set so as to be able to transmit power, the rotary shaft of the second motor is connected to the sun gear of the planetary gear set so as to transmit power, To the ring gear of the planetary gear unit,
The intermittent means includes a second clutch interposed between the ring gear of the planetary gear set and the in-vehicle fixed structure; And a third clutch interposed between the carrier of the planetary gear set and the in-vehicle fixed structure,
As one of the driving modes of the vehicle,
The first clutch is engaged,
The second clutch and the third clutch are disengaged,
The engine and the first motor are driven,
And a four-wheel drive power split mode in which the second motor is operated as a generator and the front wheels are driven and the rear wheels are driven by the first motor by the engine power transmitted to the front wheel drive shaft and the second motor through the planetary gear set The drive system of the hybrid vehicle.
삭제delete 삭제delete 삭제delete 청구항 1에 있어서,
차량의 주행 모드 중 하나로서,
제2클러치를 결합하고,
제1클러치 및 제3클러치는 분리하며,
엔진과 제1모터를 구동하여,
상기 유성기어장치를 통해 전달되는 엔진 동력에 의해 제2모터가 발전기로 작동되고 상기 제1모터에 의해 후륜이 구동되는 직렬 모드를 더 가지는 것을 특징으로 하는 하이브리드 자동차의 구동 시스템.
The method according to claim 1,
As one of the driving modes of the vehicle,
The second clutch is engaged,
The first clutch and the third clutch are disengaged,
The engine and the first motor are driven,
Further comprising a series mode in which the second motor is operated as a generator by the engine power transmitted through the planetary gear unit and the rear wheels are driven by the first motor.
청구항 1에 있어서,
차량의 주행 모드 중 하나로서,
제3클러치를 결합하고,
제1클러치 및 제2클러치는 분리하여,
전륜으로부터 유성기어장치를 통해 제2모터에 회전력이 전달되면서 제2모터에 의한 회생 제동이 이루어지는 동시에 후륜으로부터 제1모터에 회전력이 전달되면서 제1모터에 의한 에너지 회생이 이루어지는 회생 모드를 더 가지는 것을 특징으로 하는 하이브리드 자동차의 구동 시스템.
The method according to claim 1,
As one of the driving modes of the vehicle,
The third clutch is engaged,
The first clutch and the second clutch are separated,
There is a regenerative mode in which regenerative braking is performed by the second motor while rotational force is transmitted from the front wheel to the second motor through the planetary gear device and rotational power is transmitted from the rear wheel to the first motor to thereby regenerate energy by the first motor A driving system of a hybrid car characterized by.
청구항 1에 있어서,
차량의 주행 모드 중 하나로서,
제1클러치와 제3클러치를 결합하고,
제2클러치는 분리하며,
제1모터와 제2모터를 모두 구동하여,
제1모터에 의해 후륜이 구동하고 제2모터의 동력이 유성기어장치를 통해 전륜 구동축으로 전달되어 전륜이 구동하는 EV 모드를 더 가지는 것을 특징으로 하는 하이브리드 자동차의 구동 시스템.
The method according to claim 1,
As one of the driving modes of the vehicle,
The first clutch and the third clutch are engaged,
The second clutch is disengaged,
By driving both the first motor and the second motor,
Further comprising an EV mode in which the rear wheels are driven by the first motor and the power of the second motor is transmitted to the front wheel drive shaft through the planetary gear device to drive the front wheels.
청구항 1에 있어서,
상기 제2클러치를 결합하여 유성기어장치의 링기어가 고정요소가 되도록 한 상태에서 상기 제2모터를 구동하여 유성기어장치를 통해 엔진으로 전달되는 제2모터의 동력에 의해 엔진 시동이 이루어지는 것을 특징으로 하는 하이브리드 자동차의 구동 시스템.




The method according to claim 1,
Characterized in that the engine is started by the power of the second motor which is transmitted to the engine through the planetary gear device by driving the second motor in a state in which the second clutch is engaged and the ring gear of the planetary gear device becomes a fixed element The drive system of the hybrid vehicle.




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Publication number Priority date Publication date Assignee Title
JP2007055473A (en) * 2005-08-25 2007-03-08 Toyota Motor Corp Hybrid vehicle and control method therefor
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