CN102874093A - 混合动力驱动装置 - Google Patents

混合动力驱动装置 Download PDF

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CN102874093A
CN102874093A CN2012102422827A CN201210242282A CN102874093A CN 102874093 A CN102874093 A CN 102874093A CN 2012102422827 A CN2012102422827 A CN 2012102422827A CN 201210242282 A CN201210242282 A CN 201210242282A CN 102874093 A CN102874093 A CN 102874093A
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dynamotor
input shaft
oil pump
driving engine
rotation
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CN102874093B (zh
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宫田毅
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Suzuki Motor Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
    • 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
    • B60K6/365—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 with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B60K6/383—One-way clutches or freewheel devices
    • 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
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • 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
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • F16H61/0031—Supply of control fluid; Pumps therefore using auxiliary pumps, e.g. pump driven by a different power source than the engine
    • 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
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract

本发明提供一种混合动力驱动装置，其中第一单向离合器(23)被设置为防止输入轴(3)在与发动机(2)的转动方向相反的方向上转动，第一油泵(24)连接到输入轴(3)，第二油泵(25)连接到在两个电动发电机(4)和(5)的列线图上邻近输入轴(3)设置的电动发电机(4)，并且第二单向离合器(26)设置在第二油泵(25)和连接到第二油泵(25)的电动发电机(4)之间，使得只当电动发电机(4)在与输入轴(3)的转动方向相反的方向上转动时才将转动传送到第二油泵(25)。

Description

混合动力驱动装置
技术领域
本发明涉及混合动力驱动装置，尤其涉及向必要部位供给润滑油的驱动装置。
背景技术
近年来，针对混合动力车辆和具备怠速停止发动机的车辆，已经开发出发动机被临时停止以改善燃料消耗率并抑制二氧化碳排放的车辆。
对于这种车辆，在用于向传动系统的必要部位供给润滑油的压力供给装置利用发动机动力运转的情况下，润滑油的供给率有时候根据发动机运转状况而下降。
例如，在安装有传动系统的车辆能够在发动机转动停止期间通过不同于该发动机的驱动源的动力行驶的情况下，如果该发动机在行驶期间停止，则压力供给装置也停止，从而向必要部位的润滑油供给停止。
JP 10-169485A中描述的混合动力车辆具备从发动机的转动得到动力的油泵，传动轴经由单向离合器连接到该油泵的输入轴，并且即使当发动机停止时，在向后行驶时，使发电机作为电动机驱动，以驱动油泵，由此供给润滑油。
JP2001-37329A中描述的车辆的动力传动系具备第一电动发电机和第二电动发电机作为两个电动发电机，第一电动发电机经由单向离合器连接到第一油泵，第二电动发电机和环形齿轮连接到第一油泵，从而即使当发动机停止时也供给润滑油。
发明内容
在包括混合动力车辆的传统车辆上，传动系统中的齿轮部件等的耐用性由于润滑不足而下降。可以想到安装能够通过使用不同于发动机的输入轴的驱动源供给润滑油的电动机驱动的泵；然而，这种配置由于传动系统的尺寸更大而具有重量增加，由于部件数目增加而成本增加等问题。
此外，可以想到将机械式油泵安装在车辆行驶期间始终转动的车轴上。然而，在此情况下，如果发动机的输入轴上的油泵运转，那么这两个油泵处于同时运转的状态。因此，引起摩擦的增加导致燃料消耗率恶化的问题。
因此，本发明的目的是提供一种混合动力驱动装置，其中防止由发动机驱动的第一油泵和由电动发电机驱动的第二油泵被同时驱动，并且可以由此降低油泵的驱动消耗。
本发明提供一种混合动力驱动装置，其包括：发动机；连接到所述发动机的输入轴；第一电动发电机和第二电动发电机；动力分配装置；以及用于将动力传送到驱动轮的输出轴，其中所述动力分配装置包括具有四个转动元件的行星齿轮机构，所述四个转动元件差动转动并且在列线图中沿着直线排列；设置在所述列线图中部的两个转动元件中的一个连接到所述输入轴，所述两个转动元件中的另一个连接到所述输出轴；设置在所述列线图两端的两个转动元件分别连接到所述第一电动发电机和第二电动发电机；第一单向离合器设置在所述输入轴和用于支撑所述输入轴的壳体之间，以防止所述输入轴在与所述发动机的转动方向相反的方向上转动；并且第一油泵连接到所述输入轴，其特征在于，所述第一电动发电机在所述列线图上邻近所述输入轴设置，并且经由第二单向离合器连接到第二油泵；并且所述第二单向离合器被配置为仅当所述第一电动发电机在与所述输入轴的转动方向相反的方向上转动时才将转动传送到所述第二油泵。
根据本发明的混合动力驱动装置，防止了由发动机驱动的第一油泵和由电动发电机驱动的第二油泵被同时驱动，从而可以减小油泵的驱动消耗。
在本发明的优选方式中，进行配置，使得当车辆通过从所述发动机和所述第二电动发电机提供的驱动力向前移动时，所述第一电动发电机的转动保持与所述发动机的转动方向相同，或者停止。
附图说明
图1是混合动力驱动装置的系统配置图。
图2是混合动力驱动装置的截面图。
图3是当发动机停止并且通过第二电动发电机的驱动力使车辆行驶的EV行驶时的混合动力驱动装置的配置图。
图4是图3中所示的EV行驶时的列线图。
图5是当通过发动机和第二电动发电机的驱动力使车辆低速行驶时的混合动力驱动装置的配置图。
图6是图5中所示的低速行驶时的列线图。
图7是当通过发动机和第一电动发电机的驱动力使车辆高速行驶时的混合动力驱动装置的配置图。
图8是图7中所示的高速行驶时的列线图。
具体实施方式
本发明通过将第二油泵连接到在两个电动发电机的列线图上邻近输入轴设置的电动发电机，并且通过在第二油泵和连接到第二油泵的电动发电机之间设置只有当电动发电机在与输入轴的转动方向相反的方向上转动时才将转动传送到第二油泵的第二单向离合器，来防止由发动机驱动的第一油泵和由电动发电机驱动的第二油泵被同时驱动，并且实现减少油泵驱动消耗的目的。
图1至图8示出本发明的实施方式。
在图1和图2中，附图标记1表示安装在诸如混合动力车辆等电动车辆上的混合动力驱动装置。
混合动力驱动装置1包括作为输出扭矩的驱动源的发动机2、连接到发动机2的输入轴3、作为两个电动发电机的第一电动发电机(发电用电动机)(在附图中表示为“MG1”)4和第二电动发电机(驱动用电动机)(在附图中表示为“MG2”)5、动力分配装置6以及用于经由驱动车轴8将动力传送到左右驱动轮7的输出轴9。
动力分配装置6具有差动转动的四个转动元件，并且由作为行星齿轮机构的第一行星齿轮机构10和第二行星齿轮机构11配置而成，其中这四个转动元件在列线图中沿着直线排列。
第一行星齿轮机构10包括第一太阳齿轮12、与第一太阳齿轮12啮合的第一小齿轮13、连接到第一小齿轮13的第一承载器14以及与第一小齿轮13啮合的第一环形齿轮15。
第二行星齿轮机构11包括第二太阳齿轮16、与第二太阳齿轮16啮合的第二小齿轮17、连接到第二小齿轮17的第二承载器18以及与第二小齿轮17啮合的第二环形齿轮19。
第一太阳齿轮12构成第一转动元件，第一承载器14和第二太阳齿轮16通过一体连接而构成第二转动元件，第一环形齿轮15和第二承载器18通过一体连接而构成第三转动元件，第二环形齿轮19构成第四转动元件。
在动力分配装置6中，当第一转动元件、第二转动元件、第三转动元件和第四转动元件在列线图中沿着直线排列时，列线图形成直线，并且所述转动元件以上述顺序位于列线图上。设置在列线图的中部的两个转动元件之一连接到输入轴3，并且这两个转动元件中的另一个连接到输出轴9。
具体来说，作为第二转动元件的第一承载器14和第二太阳齿轮16连接到输入轴3，并且作为第三转动元件的第一环形齿轮15和第二承载器18经由输出齿轮20连接到输出轴9。
此外，在动力分配装置6中，所述电动发电机分别连接到设置在列线图两端的两个转动元件。
具体来说，第一电动发电机4经由传动轴21连接到作为第一转动元件的第一太阳齿轮12。第二电动发电机5连接到作为第四转动元件的第二环形齿轮19。
在混合动力驱动装置1中，第一单向离合器23设置在输入轴3和作为用于支撑输入轴3的壳体的变速器壳体22之间，以防止输入轴3在与发动机2的转动方向相反的方向上转动。
在第一单向离合器23的发动机2侧，第一油泵24连接到输入轴3。
第一电动发电机4和第二电动发电机5当中，在列线图上邻近输入轴3设置的第一电动发电机4在传动轴21上连接到第二油泵25。
在此情况下，在第二油泵25和连接到第二油泵25的第一电动发电机4之间的传动轴25上设置有仅当第一电动发电机4在与输入轴3的转动方向相反的方向上转动时才将转动传送到第二油泵25的第二单向离合器26。
也就是说，在本实施方式中，混合动力驱动装置1包括能够通过与发动机2的输入轴3不同的驱动源(第一电动发电机4)运转的机械式第二油泵25，第二油泵25具备第二单向离合器26，第二单向离合器26具有允许在一个方向上转动并且禁止在相反方向上转动的功能，并且润滑油的供给与停止可以根据与发动机2的输入轴3不同的驱动源的转动方向改变，从而仅当发动机2停止时，第二油泵25才能够由与发动机2的输入轴3不同的驱动源来驱动。
根据上述配置，如图3和图4中所示，当发动机2停止，并且在列线图上邻近输出轴9设置的第二电动发电机5在使车辆向前行驶的正方向上转动时(EV行驶)，通过第一单向离合器23防止输入轴3在与发动机2的转动方向相反的方向上转动，从而可以防止第一油泵24在相反方向上转动。
也就是说，在EV行驶时(当发动机2停止时)，当使用第二电动发电机5的驱动力作为驱动力，并且该驱动力经由第二行星齿轮机构11传送到输出轴9时，第二行星齿轮机构11的第二太阳齿轮16在与第二承载器18的转动方向相反的方向上转动，从而在与发动机2的转动方向相反的方向上转动输入轴3。然而，由于第一单向离合器23的转动方向是负的，所以第一单向离合器23被机械地锁定，从而防止输入轴3的反向转动。
此时，连接到第二油泵25的第一电动发电机4在与发动机2的转动方向相反的方向上(负方向)转动，从而第二单向离合器26被锁定，并且第二油泵25被驱动。
因此，在第一油泵24停止期间，第二油泵25被驱动，并且润滑油可被供给到需要润滑的部位，从而可以减小由两个油泵24和25的同时驱动引起的驱动消耗。
如图5和图6中所示，当通过从发动机2和在列线图上邻近输出轴9设置的第二电动发电机5提供的驱动力使车辆低速向前行驶时，连接到第二油泵25的第一电动发电机4以比发动机2的转动速度高的转动速度在与发动机2的转动方向相同的方向上转动。
此时，连接到输入轴3的第一油泵24被驱动，另一方面，通过第二单向离合器26的空转，第二油泵25被停止，从而可以减小由两个油泵24和25的同时驱动引起的驱动消耗。
也就是说，在HEV(发动机2运行)的低速行驶时，发动机2的驱动力和第二电动发电机5的驱动力经由第二行星齿轮机构11传送到输出轴9。此时，由于第一电动发电机4在正转动方向上转动，所以第二单向离合器26处于空转状态，从而防止驱动第二油泵25。
在混合动力驱动装置1中，当通过从发动机和连接到第二油泵25的第一电动发电机4提供的驱动力使车辆向前行驶时，连接到第二油泵25的第一电动发电机4进入其转动方向保持与发动机2的转动方向相同或者其转动停止的状态。
因此，如图7和图8中所示，当通过从发动机和连接到第二油泵25的第一电动发电机4提供的驱动力使车辆高速向前行驶时，第一电动发电机4可以在与发动机2的转动方向相反的方向上转动。然而，通过使第一电动发电机4处于其转动方向保持与发动机2的转动方向相同或者其转动停止的状态，第二油泵25可以在第一油泵24被驱动期间停止，从而可以减小由两个油泵24和25同时驱动引起的驱动消耗。
也就是说，在HEV(发动机2运行)的高速行驶时，发动机2的驱动力和第一电动发电机4的驱动力经由第一行星齿轮机构10传送到输出轴9。此时，由于第一电动发电机4停止转动或者在正转动方向上转动，与处于低速行驶时一样，第二油泵25的驱动被防止。
根据本发明的混合动力驱动装置可被应用于当发动机停止时需要润滑机构的混合动力用变速器、电动车辆用减速器等。

Claims (2)

1.一种混合动力驱动装置，包括：发动机；连接到所述发动机的输入轴；第一电动发电机和第二电动发电机；动力分配装置；以及用于将动力传送到驱动轮的输出轴，其中所述动力分配装置包括具有四个转动元件的行星齿轮机构，所述四个转动元件差动转动并且在列线图中沿着直线排列；设置在所述列线图中部的两个转动元件中的一个连接到所述输入轴，所述两个转动元件中的另一个连接到所述输出轴；设置在所述列线图两端的两个转动元件分别连接到所述第一电动发电机和第二电动发电机；第一单向离合器设置在所述输入轴和用于支撑所述输入轴的壳体之间，以防止所述输入轴在与所述发动机的转动方向相反的方向上转动；并且第一油泵连接到所述输入轴，
其中，所述第一电动发电机在所述列线图上邻近所述输入轴设置，并且经由第二单向离合器连接到第二油泵；并且所述第二单向离合器被配置为仅当所述第一电动发电机在与所述输入轴的转动方向相反的方向上转动时才将转动传送到所述第二油泵。
2.根据权利要求1所述的混合动力驱动装置，其中进行配置，使得当车辆通过从所述发动机和所述第二电动发电机提供的驱动力向前移动时，所述第一电动发电机的转动保持与所述发动机的转动方向相同，或者停止。
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