KR101293294B1 - Power train for hybrid vehicle - Google Patents

Power train for hybrid vehicle Download PDF

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KR101293294B1
KR101293294B1 KR1020110080085A KR20110080085A KR101293294B1 KR 101293294 B1 KR101293294 B1 KR 101293294B1 KR 1020110080085 A KR1020110080085 A KR 1020110080085A KR 20110080085 A KR20110080085 A KR 20110080085A KR 101293294 B1 KR101293294 B1 KR 101293294B1
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South Korea
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motor
gear
transmission
power
planetary gear
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KR1020110080085A
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Korean (ko)
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KR20130017576A (en
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김태훈
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현대 파워텍 주식회사
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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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • 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
    • 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
    • B60K2006/266—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 with two coaxial motors or generators
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

본 발명은 하이브리드 차량용 파워트레인에 관한 것으로서, 특히, 저용량의 모터를 설치하여 큰 출력 토크를 구현할 수 있고, 무단변속이 가능한 하이브리드 차량용 파워트레인에 관한 것이다.
본 발명은, 제1모터와, 제1모터의 동력에 변속동력을 제공하는 제2모터와, 제1모터 또는 제2모터로부터 전달되는 동력을 가변시키는 유성기어세트와, 유성기어세트와 기어연결되고 제1모터 또는 제2모터의 동력을 전달하는 전달기어가 설치되는 전달축과, 전달기어와 기어연결되는 차동장치가 설치되는 출력축을 포함하는 하이브리드 차량용 파워트레인을 제공한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power train for a hybrid vehicle, and more particularly, to a power train for a hybrid vehicle capable of realizing a large output torque by installing a low capacity motor and allowing a stepless speed change.
The present invention relates to a first motor, a second motor providing shift power to the power of the first motor, a planetary gear set for varying the power transmitted from the first motor or the second motor, a planetary gear set and a gear connection. And a transmission shaft having a transmission gear for transmitting power of the first motor or the second motor, and an output shaft having a differential gear connected to the transmission gear.

Description

하이브리드 차량용 파워트레인 {POWER TRAIN FOR HYBRID VEHICLE}Hybrid vehicle powertrain {POWER TRAIN FOR HYBRID VEHICLE}

본 발명은 하이브리드 차량용 파워트레인에 관한 것으로서, 특히, 저용량의 모터를 설치하여 큰 출력 토크를 구현할 수 있고, 무단변속이 가능한 하이브리드 차량용 파워트레인에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power train for a hybrid vehicle, and more particularly, to a power train for a hybrid vehicle capable of realizing a large output torque by installing a low capacity motor and allowing a stepless speed change.

엔진, 모터 및 유성기어세트를 조합하여 구성된 하이브리드 변속기를 탑재한 하이브리드 차량은, 주로 출발 및 저속 구간에서 모터에 의해서만 구동하는 전기차 모드 주행을 행한다.A hybrid vehicle equipped with a hybrid transmission configured by combining an engine, a motor, and a planetary gear set mainly travels in an electric vehicle mode driven only by a motor in a starting and a low speed section.

이후 차량 속도가 증가하면 변속기의 모드가 EVT(Electrically Variable Transmission)로 변환되어 엔진의 동력과 모터의 동력을 보다 효율적으로 사용하는 동력분기모드로 주행된다.Then, when the vehicle speed increases, the transmission mode is converted to EVT (Electrically Variable Transmission) to drive in the power branch mode that uses the engine power and the motor power more efficiently.

전기 차량은 모터 및 유성기어세트를 조하여 구성된 변속기가 탑재되며, 모터의 동력이 변속기에 공급되고, 변속기에서 구현되는 다단의 변속단에 의해 차량의 속도 또는 차량의 진행 방향이 가변된다.
The electric vehicle is equipped with a transmission configured by combining a motor and a planetary gear set, the power of the motor is supplied to the transmission, and the speed of the vehicle or the traveling direction of the vehicle is changed by a multi-speed gear stage implemented in the transmission.

본 발명의 배경기술은 대한민국 공개특허공보 10-2011-0052148호(2011년 5월 15일 공개, 발명의 명칭 : 하이브리드 차량의 변속기)에 개시되어 있다.
Background art of the present invention is disclosed in Republic of Korea Patent Publication No. 10-2011-0052148 (published May 15, 2011, the name of the invention: a transmission of a hybrid vehicle).

일반적인 하이브리드 차량 또는 전기 차량의 변속기는 큰 출력토크를 구현하기 위해 고용량의 모터가 설치되고, 다수 개의 마찰요소가 설치되기 때문에 변속기의 크기 및 무게를 줄이기 어렵고, 변속작동 중에 발생되는 변속충격을 줄이기 어려운 문제점이 있다.In a typical hybrid vehicle or electric vehicle transmission, it is difficult to reduce the size and weight of the transmission due to the installation of a high capacity motor and a large number of friction elements to realize a large output torque, and to reduce the transmission shock generated during the shift operation. There is a problem.

따라서 이를 개선할 필요성이 요청된다.Therefore, there is a need for improvement.

본 발명은 저용량의 모터를 설치하여 큰 출력 토크를 구현할 수 있고, 무단변속이 가능한 하이브리드 차량용 파워트레인을 제공하는데 그 목적이 있다.
An object of the present invention is to provide a hybrid vehicle powertrain that can implement a large output torque by installing a low-capacity motor, and is capable of continuously variable speed.

상기와 같은 목적을 달성하기 위하여 본 발명은, 제1모터; 상기 제1모터의 동력에 변속동력을 제공하는 제2모터; 상기 제1모터 또는 상기 제2모터로부터 전달되는 동력을 가변시키는 유성기어세트; 상기 유성기어세트와 기어연결되고 상기 제1모터 또는 상기 제2모터의 동력을 전달하는 전달기어가 설치되는 전달축; 및 상기 전달기어와 기어연결되는 차동장치가 설치되는 출력축을 포함하는 것을 특징으로 하는 하이브리드 차량용 파워트레인을 제공한다.The present invention to achieve the above object, the first motor; A second motor providing shift power to power of the first motor; A planetary gear set configured to vary power transmitted from the first motor or the second motor; A transmission shaft geared to the planetary gear set and provided with a transmission gear for transmitting power of the first motor or the second motor; And an output shaft on which a differential device connected to the transmission gear is connected to the transmission gear.

또한, 상기 유성기어세트는, 상기 제1모터에 연결되는 선기어; 상기 선기어와 기어연결되고 상기 제2모터와 캐리어에 의해 연결되는 제1유성기어; 상기 제1유성기어와 기어연결되는 제2유성기어; 및 상기 제2유성기어와 기어연결되고 출력기어와 연결되는 링기어를 포함하는 것을 특징으로 한다.The planetary gear set may further include a sun gear connected to the first motor; A first planetary gear geared to the sun gear and connected to the second motor by a carrier; A second planetary gear connected to the first planetary gear; And a ring gear connected to the second planetary gear and connected to the output gear.

또한, 상기 전달기어는, 상기 전달축에 설치되고 상기 출력기어와 기어연결되는 제1전달기어; 및 상기 전달축에 설치되고 상기 제1전달기어와 비교하여 작은 지름을 이루는 제2전달기어를 포함하는 것을 특징으로 한다.
The transmission gear may include a first transmission gear installed on the transmission shaft and gear-connected with the output gear; And a second transmission gear installed on the transmission shaft and having a smaller diameter compared to the first transmission gear.

본 발명에 따른 하이브리드 차량용 파워트레인은 저용량의 모터를 설치하여 큰 출력토크를 구현할 수 있으므로 변속기의 크기 및 무게를 줄일 수 있고, 변속기 제작에 소요되는 비용을 절감할 수 있는 이점이 있다.The powertrain for a hybrid vehicle according to the present invention can implement a large output torque by installing a low-capacity motor, thereby reducing the size and weight of the transmission, and reducing the cost of manufacturing the transmission.

또한, 본 발명에 따른 하이브리드 차량용 파워트레인은 별도의 마찰요소가 요구되지 않고 무단변속 작동이 이루어지기 때문에 변속작동 중에 발생되는 변속충격을 줄일 수 있어 승차감이 향상되는 이점이 있다.
In addition, the powertrain for a hybrid vehicle according to the present invention does not require a separate friction element, and because the stepless speed change operation is performed, it is possible to reduce the shift shock generated during the shifting operation, thereby improving the riding comfort.

도 1은 본 발명의 일 실시예에 따른 하이브리드 차량용 파워트레인이 도시된 구성도이다.
도 2는 본 발명의 일 실시예에 따른 하이브리드 차량용 파워트레인의 속도선도가 도시된 그래프이다.1 is a block diagram showing a power train for a hybrid vehicle according to an embodiment of the present invention.
2 is a graph illustrating a speed diagram of a power train for a hybrid vehicle according to an exemplary embodiment of the present invention.

이하, 첨부된 도면들을 참조하여 본 발명에 따른 하이브리드 차량용 파워트레인의 일 실시예를 설명한다.Hereinafter, an embodiment of a powertrain for a hybrid vehicle according to the present invention will be described with reference to the accompanying drawings.

이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써, 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다.In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.
Therefore, definitions of these terms should be made based on the contents throughout this specification.

도 1은 본 발명의 일 실시예에 따른 하이브리드 차량용 파워트레인이 도시된 구성도이고, 도 2는 본 발명의 일 실시예에 따른 하이브리드 차량용 파워트레인의 속도선도가 도시된 그래프이다.1 is a configuration diagram showing a power train for a hybrid vehicle according to an embodiment of the present invention, Figure 2 is a graph showing a speed diagram of the power train for a hybrid vehicle according to an embodiment of the present invention.

도 1 및 도 2를 참조하면, 본 발명의 일 실시예에 따른 하이브리드 차량용 파워트레인은, 제1모터(12)와, 제1모터(12)의 동력에 변속동력을 제공하는 제2모터(14)와, 제1모터(12) 또는 제2모터(14)로부터 전달되는 동력을 가변시키는 유성기어세트(30)와, 유성기어세트(30)와 기어연결되고 제1모터(12) 또는 제2모터(14)의 동력을 전달하는 전달기어(84)가 설치되는 전달축(50)과, 전달기어(84)와 기어연결되는 차동장치(72)가 설치되는 출력축(70)을 포함한다.1 and 2, a powertrain for a hybrid vehicle according to an embodiment of the present invention may include a first motor 12 and a second motor 14 that provides shifting power to power of the first motor 12. ), A planetary gear set 30 for varying the power transmitted from the first motor 12 or the second motor 14, and the first motor 12 or the second gear gear connected to the planetary gear set 30. And a transmission shaft 50 on which a transmission gear 84 for transmitting power of the motor 14 is installed, and an output shaft 70 on which a differential device 72 geared to the transmission gear 84 is installed.

제1모터(12) 또는 제2모터(14)에 전원이 인가되어 동력이 발생되면, 유성기어세트(30)에 전달되어 변속작동이 이루어지고, 변속된 제1모터(12) 또는 제2모터(14)의 동력은 전달기어(84) 및 전달축(50)을 지나 차동장치(72)에 전달되어 출력축(70) 및 구동휠에 전달된다.When power is applied to the first motor 12 or the second motor 14 to generate power, it is transmitted to the planetary gear set 30 to perform a shift operation, and the shifted first motor 12 or the second motor The power of 14 is transmitted to the differential device 72 via the transmission gear 84 and the transmission shaft 50 to the output shaft 70 and the drive wheel.

이때, 제1모터(12)에서 제공되는 토크와 제2모터(14)에서 제공되는 토크는 유성기어세트(30)에서 만나 배가되므로 유성기어세트(30)의 출력토크는 제1모터(12)의 토크와 제2모터(14)의 토크를 합과 같은 토크를 이루게 된다.At this time, since the torque provided from the first motor 12 and the torque provided from the second motor 14 meet and double in the planetary gear set 30, the output torque of the planetary gear set 30 is the first motor 12. Torque is equal to the sum of the torque of the second motor (14).

저용량의 제1모터(12) 및 제2모터(14)를 설치하여 큰 출력토크를 구현할 수 있게 되므로 고가의 대용량 모터가 요구되지 않게 된다.Since the first motor 12 and the second motor 14 having a low capacity can be installed to implement a large output torque, an expensive large capacity motor is not required.

따라서 하이브리드 차량 또는 전기차량에 설치되는 파워트레인의 크기 및 무게를 줄일 수 있고, 파워트레인 제작에 소요되는 비용을 절감할 수 있게 된다.Therefore, the size and weight of the power train installed in the hybrid vehicle or the electric vehicle can be reduced, and the cost for manufacturing the power train can be reduced.

또한, 제1모터(12) 또는 제2모터(14)의 출력을 제어하여 유성기어세트(30)로부터 출력되는 동력의 회전속도를 제어할 수 있으므로 별도의 변속작동 없이 변속단을 가변시킬 수 있게 된다.In addition, since the rotational speed of the power output from the planetary gear set 30 can be controlled by controlling the output of the first motor 12 or the second motor 14, the shift stage can be changed without a separate shift operation. do.

따라서 유성기어세트(30)의 회전운동을 제한하는 별도의 마찰요소가 요구되지 않으므로 파워트레인의 부품수가 감소되어 파워트레인의 크기 및 무게를 감소시킬 수 있는 효과가 나타나게 된다.Therefore, since a separate friction element is not required to limit the rotational movement of the planetary gear set 30, the number of parts of the power train is reduced, thereby reducing the size and weight of the power train.

유성기어세트(30)는, 제1모터(12)에 연결되는 선기어(32)와, 선기어(32)와 기어연결되고 제2모터(14)와 캐리어에 의해 연결되는 제1유성기어(34)와, 제1유성기어(34)와 기어연결되는 제2유성기어(36)와, 제2유성기어(36)와 기어연결되고 출력기어(82)와 연결되는 링기어(38)를 포함한다.The planetary gear set 30 includes a sun gear 32 connected to the first motor 12 and a first planetary gear 34 geared to the sun gear 32 and connected to the second motor 14 by a carrier. And a second planetary gear 36 geared to the first planetary gear 34 and a ring gear 38 geared to the second planetary gear 36 and connected to the output gear 82.

제1모터(12)로부터 제공되는 동력은 선기어(32)를 통해 유성기어세트(30)에 전달되고, 선기어(32)로부터 제1유성기어(34), 제2유성기어(36)를 지나 링기어(38) 및 출력기어(82)에 전달된다.Power provided from the first motor 12 is transmitted to the planetary gear set 30 through the sun gear 32, and passes through the first planetary gear 34 and the second planetary gear 36 from the sun gear 32. It is transmitted to the gear 38 and the output gear 82.

이때, 제1모터(12)로부터 제공되는 동력에 의해 복수 개의 제1유성기어(34)를 연결하는 캐리어가 회전되므로 제1유성기어(34)를 공전시키게 되므로 제1모터(12)에 의해 자전되는 제1유성기어(34)를 공전시키면서 제1모터(12)의 동력을 증속 또는 감속시키게 된다.At this time, since the carrier connecting the plurality of first planetary gears 34 is rotated by the power provided from the first motor 12, the first planetary gear 34 is revolved and thus rotates by the first motor 12. While the first planetary gear 34 is idle, the power of the first motor 12 is increased or decreased.

제1모터(12)와 제2모터(14)가 동일한 방향으로 회전되는 경우에는 제1유성기어(34)로부터 링기어(38)에 전달되는 동력이 증속되어 높은 변속단이 구현된다.When the first motor 12 and the second motor 14 are rotated in the same direction, the power transmitted from the first planetary gear 34 to the ring gear 38 is increased to realize a high speed change stage.

반대로, 제1모터(12)와 제2모터(14)가 다른 방향으로 회전되는 경우에는 제1유성기어(34)로부터 링기어(38)에 전달되는 동력이 감속된다.On the contrary, when the first motor 12 and the second motor 14 are rotated in different directions, the power transmitted from the first planetary gear 34 to the ring gear 38 is reduced.

전달기어(84)는, 전달축(50)에 설치되고 출력기어(82)와 기어연결되는 제1전달기어(84a)와, 전달축(50)에 설치되고 제1전달기어(84a)와 비교하여 작은 지름을 이루는 제2전달기어(84b)를 포함한다.The transmission gear 84 is compared with the first transmission gear 84a installed on the transmission shaft 50 and gear-connected with the output gear 82 and the first transmission gear 84a installed on the transmission shaft 50. To include a second transmission gear 84b having a small diameter.

유성기어세트(30)로부터 출력기어(82)에 의해 출력되는 동력은 제1전달기어(84a), 출력축(70) 및 제2전달기어(84b)를 통해 차동장치(72)에 전달되고, 차동장치(72)를 지나 출력축(70)을 통해 구동휠에 전달된다.Power output from the planetary gear set 30 by the output gear 82 is transmitted to the differential device 72 through the first transmission gear 84a, the output shaft 70, and the second transmission gear 84b, and differentially. It passes through the device 72 and is transmitted to the drive wheel via the output shaft 70.

제1전달기어(84a)는 제2전달기어(84b)와 비교하여 지름이 크게 형성되기 때문에 제1전달기어(84a), 전달축(50) 및 제2전달기어(84b)를 통해 차동장치(72)에 전달되는 동력의 회전속도가 감소되는 효과가 나타나게 된다.Since the first transmission gear 84a has a larger diameter than the second transmission gear 84b, the first transmission gear 84a is provided with a differential device through the first transmission gear 84a, the transmission shaft 50, and the second transmission gear 84b. The rotation speed of the power transmitted to 72 is reduced.

차동장치(72)에는 제2전달기어(84b)와 기어연결되는 연결기어(86)가 설치된다.The differential device 72 is provided with a connecting gear 86 geared to the second transfer gear 84b.

따라서 제1모터(12), 제2모터(14) 및 유성기어세트(30)가 설치되는 하나의 축과, 전달축(50) 및 출력축(70)으로 이루어지는 세 개의 축이 출력기어(82), 전달기어(84) 및 연결기어(86)로 이루어지는 외접기어에 의해 연결되는 구조를 이루게 된다.
Therefore, one shaft on which the first motor 12, the second motor 14, and the planetary gear set 30 are installed, and three shafts including the transmission shaft 50 and the output shaft 70 are output gears 82. , The transmission gear 84 and the connecting gear 86 is formed by the external gear connected.

상기와 같이 구성된 본 발명의 일 실시예에 따른 하이브리드 차량용 파워트레인의 작동을 살펴보면 다음과 같다.Looking at the operation of the hybrid vehicle powertrain according to an embodiment of the present invention configured as described above are as follows.

차량 주행이 개시되어 제1모터(12) 및 제2모터(14)에 전원이 인가되면, 제1모터(12)의 동력은 선기어(32), 제1유성기어(34), 제2유성기어(36) 및 링기어(38)를 따라 출력기어(82)를 통해 전달된다.When driving of the vehicle is started and power is applied to the first motor 12 and the second motor 14, the power of the first motor 12 is the sun gear 32, the first planetary gear 34, and the second planetary gear. It passes through the output gear 82 along the 36 and the ring gear 38.

이때, 제2모터(14)에 의해 전달되는 동력에 의해 캐리어가 회전되므로 제1유성기어(34)가 공전되면서 제1모터(12)의 동력이 가속 또는 감속되어 출력기어(82)를 통해 전달된다.At this time, since the carrier is rotated by the power transmitted by the second motor 14, the first planetary gear 34 revolves, and the power of the first motor 12 is accelerated or decelerated and transmitted through the output gear 82. do.

차량의 주행 속도 또는 주행 방향의 변화에 따라 제1모터(12) 및 제2모터(14)의 출력이 가변되면서 무단변속기의 역할을 행하게 되며, 제1모터(12) 및 제2모터(14)의 출력 변화에 따른 출력의 회전속도는 도 2네 도시된 속도선도와 같다.The output of the first motor 12 and the second motor 14 is variable according to the change in the traveling speed or the driving direction of the vehicle, and thus serves as a continuously variable transmission, and the first motor 12 and the second motor 14. The rotational speed of the output according to the output change of the same as the speed diagram shown in FIG.

출력기어(82)를 통해 공급되는 동력은 제1전달기어(84a), 전달축(50), 제2전달기어(84b), 연결기어(86) 및 차동장치(72)를 지나 출력축(70)을 통해 구동휠에 전달된다.The power supplied through the output gear 82 passes through the first transmission gear 84a, the transmission shaft 50, the second transmission gear 84b, the connecting gear 86 and the differential device 72, and the output shaft 70. It is transmitted to the drive wheel through.

이로써, 저용량의 모터를 설치하여 큰 출력 토크를 구현할 수 있고, 무단변속이 가능한 하이브리드 차량용 파워트레인을 제공할 수 있게 된다.
Thus, it is possible to implement a large output torque by installing a low-capacity motor, it is possible to provide a hybrid vehicle powertrain capable of continuously variable speed.

본 발명은 도면에 도시되는 일 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

또한, 하이브리드 차량용 파워트레인을 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 하이브리드 차량이 아닌 다른 제품에도 본 발명의 파워트레인이 사용될 수 있다.In addition, the powertrain for a hybrid vehicle has been described as an example, but this is merely exemplary, and the powertrain of the present invention may be used in other products than the hybrid vehicle.

따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.
Accordingly, the true scope of the present invention should be determined by the following claims.

12 : 제1모터 14 : 제2모터
30 : 유성기어세트 32 : 선기어
34 : 제1유성기어 36 : 제2유성기어
38 : 링기어 50 : 전달축
70 : 출력축 72 : 차동장치
82 : 출력기어 84 : 전달기어
84a : 제1전달기어 84b : 제2전달기어
86 : 연결기어12: first motor 14: second motor
30: planetary gear set 32: sun gear
34: first planetary gear 36: second planetary gear
38: ring gear 50: transmission shaft
70: output shaft 72: differential device
82: output gear 84: transmission gear
84a: First Transmission Gear 84b: Second Transmission Gear
86: connecting gear

Claims (3)

제1모터;
상기 제1모터의 동력에 변속동력을 제공하는 제2모터;
상기 제1모터 또는 상기 제2모터로부터 전달되는 동력을 가변시키는 유성기어세트;
상기 유성기어세트와 기어연결되고 상기 제1모터 또는 상기 제2모터의 동력을 전달하는 전달기어가 설치되는 전달축; 및
상기 전달기어와 기어연결되는 차동장치가 설치되는 출력축을 포함하고;
상기 유성기어세트는,
상기 제1모터에 연결되는 선기어;
상기 선기어와 기어연결되고 상기 제2모터와 캐리어에 의해 연결되는 제1유성기어;
상기 제1유성기어와 기어연결되는 제2유성기어; 및
상기 제2유성기어와 기어연결되고 출력기어와 연결되는 링기어를 포함하는 것을 특징으로 하는 하이브리드 차량용 파워트레인.
A first motor;
A second motor providing shift power to power of the first motor;
A planetary gear set configured to vary power transmitted from the first motor or the second motor;
A transmission shaft geared to the planetary gear set and provided with a transmission gear for transmitting power of the first motor or the second motor; And
An output shaft on which a differential device in gear connection with the transmission gear is installed;
The planetary gear set includes:
A sun gear connected to the first motor;
A first planetary gear geared to the sun gear and connected to the second motor by a carrier;
A second planetary gear connected to the first planetary gear; And
And a ring gear connected to the second planetary gear and connected to the output gear.
삭제delete 제1항에 있어서, 상기 전달기어는,
상기 전달축에 설치되고 상기 출력기어와 기어연결되는 제1전달기어; 및
상기 전달축에 설치되고 상기 제1전달기어와 비교하여 작은 지름을 이루는 제2전달기어를 포함하는 것을 특징으로 하는 하이브리드 차량용 파워트레인.
The method of claim 1, wherein the transmission gear,
A first transmission gear installed on the transmission shaft and gear-connected with the output gear; And
And a second transmission gear installed on the transmission shaft, the second transmission gear having a smaller diameter compared to the first transmission gear.
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JP2009143348A (en) * 2007-12-13 2009-07-02 Toyota Motor Corp Drive device for hybrid vehicle
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JP2005344917A (en) * 2004-06-07 2005-12-15 Toyota Motor Corp Controller of power train for vehicle
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