CN107791820A - 混合动力变速驱动桥 - Google Patents

混合动力变速驱动桥 Download PDF

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CN107791820A
CN107791820A CN201710767085.XA CN201710767085A CN107791820A CN 107791820 A CN107791820 A CN 107791820A CN 201710767085 A CN201710767085 A CN 201710767085A CN 107791820 A CN107791820 A CN 107791820A
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sprocket wheel
fixedly connected
planetary gearsets
motor
gear
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戴维·艾伦·贾森
格雷戈里·丹尼尔·格莱斯基
大卫·戈恩·吴
杰弗里·爱德华·毛雷尔
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Ford Global Technologies LLC
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Ford Global Technologies LLC
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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
    • B60K6/42—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
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • 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
    • 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • 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
    • B60K6/54—Transmission for changing ratio
    • 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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0833—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with arrangements for dividing torque between two or more intermediate shafts, i.e. with two or more internal power paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
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    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/70—Gearings
    • B60Y2400/73—Planetary gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
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    • 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
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    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/915—Specific drive or transmission adapted for hev

Abstract

本公开涉及混合动力变速驱动桥。功率分配式混合动力变速驱动桥包括轴线传动链条和主减速器行星齿轮组。这些部件被布置为使得动力分配行星齿轮组与主减速器行星齿轮组相对，二者均位于变速器的前部。这通过限制必须轴向交错的部件的数量来使变速驱动桥的轴向长度最小化。此外，这允许使用具有大的直径和短的轴向长度的电机，这也减小了变速驱动桥的总轴向长度。

Description

混合动力变速驱动桥
技术领域
本公开涉及车辆变速器领域。更具体地，本公开涉及混合动力变速驱动桥中部件的布置。
背景技术
混合动力动力传动系统包括诸如电池的能量存储装置，其被用于通过捕获制动能量并且通过允许更有效地使用内燃发动机来减少燃料消耗。当车辆静止时，发动机可能被关闭。另外，发动机可以在效率通常更好的更高功率设定下运转，然后在一部分车辆行驶时间内被关闭。
混合动力动力传动系统的一种类型是电功率分配式混合动力动力传动系统。在低速时，行星齿轮组将内燃发动机产生的机械功率分成两个功率流动路径。所述功率的一部分通过齿轮、链条或其它机械功率传递部件传输到驱动轮。剩余的功率被引导到电机并被转换成电功率。该电机通常称为发电机，但是它也能够将电功率转换成机械功率。另一电机驱动驱动轮。该另一电机通常称为牵引马达，但是它也能够将机械功率转换成电功率。在一些操作模式中，来自发电机的所有电功率都流向牵引马达。在其它操作模式中，一些电功率可被转移到电池。在其它操作模式中，电池可以补充电功率。
在前轮驱动式混合动力变速驱动桥中，发动机曲轴围绕与车桥轴线偏离并基本平行的轴线旋转。变速驱动桥包括车桥轴线上的差速器，该差速器在左半轴和右半轴之间分配功率，当车辆转弯时左半轴和右半轴可以以稍微不同的速度旋转。可用于变速驱动桥的空间被发动机舱的尺寸和发动机占据的空间限制。
发明内容
根据第一实施例，一种变速驱动桥包括沿着同一轴线定位的第一行星齿轮组和第二行星齿轮组以及第一电机和第二电机。第一行星齿轮组的环形齿轮固定地连接到第一链轮和第二行星齿轮组的行星架，并且还可以固定地连接到驻车齿轮。第二行星齿轮组的环形齿轮被固定地保持不旋转。第一电机固定地连接到第一行星齿轮组的中心齿轮。第二电机固定地连接到第二行星齿轮组的中心齿轮。第一行星齿轮组的行星架固定地连接到从第一行星齿轮组的前侧延伸的输入轴。第二行星齿轮组和第一电机以及第二电机位于第一行星齿轮组的后侧。第二行星齿轮组和所述电机也可以位于第一链轮的后侧。变速驱动桥还可以包括具有泵轴的泵。第一链条可以与第二链轮和第三链轮啮合。第二链轮可以固定地连接到输入轴，并且第三链轮可以固定地连接到泵轴。变速驱动桥还可以包括具有差速器输入的差速器。第二链条可以与第一链轮和可驱动地连接到差速器输入的第四链轮啮合。例如，第四链轮可以经由第三行星齿轮组可驱动地连接到差速器输入，第三行星齿轮组具有固定地连接到第四链轮的中心齿轮、固定地连接到差速器输入的行星架和固定地保持不旋转的环形齿轮。
根据第二实施例，一种变速驱动桥包括沿着同一轴线依次定位的第一行星齿轮组、第二电机、第二行星齿轮组和第一电机。第一电机和第二电机各自固定地连接到相应的行星齿轮组的中心齿轮。第一链轮固定地连接到第一行星齿轮组的环形齿轮。输入轴可以固定地连接到第一行星齿轮组的行星架。第一行星齿轮组的环形齿轮可以固定地连接到第二行星齿轮组的行星架，并且可以固定地连接到驻车齿轮。第二行星齿轮组的环形齿轮可以被固定地保持不旋转。变速驱动桥还可以包括具有泵轴的泵。第一链条可以与第二链轮和第三链轮啮合。第二链轮可以固定地连接到输入轴，并且第三链轮可以固定地连接到泵轴。第二链条可以与第一链轮和可驱动地连接到差速器输入的第四链轮啮合。例如，第四链轮可以经由第三行星齿轮组可驱动地连接到差速器输入，第三行星齿轮组具有固定地连接到第四链轮的中心齿轮、固定地连接到差速器输入的行星架和被固定地保持不旋转的环形齿轮。
在第三实施例中，一种混合动力变速驱动桥包括行星齿轮组、第一链轮、第二链轮、第三链轮、泵和第一链条。行星齿轮组的行星架固定地连接到输入轴和第二链轮。行星齿轮组的环形齿轮固定地连接到第一链轮并且可以固定地连接到驻车齿轮。第三链轮固定地连接到泵轴。第一链条与第二链轮和第三链轮啮合。混合动力变速驱动桥还可以包括固定地连接到中心齿轮的第一电机和可驱动地连接到环形齿轮的第二电机。输入轴可以从行星齿轮组的前侧延伸，同时第一电机和第二电机轴向地位于行星齿轮组的后侧。变速驱动桥还可以包括具有可驱动地连接到第四链轮的输入的差速器以及与第一链轮和第四链轮啮合的第二链条。
附图说明
图1是功率分配式混合动力变速驱动桥的第一实施例的示意图。
图2是图1的功率分配式混合动力变速驱动桥的前端的示图。
图3是功率分配式混合动力变速驱动桥的第二实施例的示意图。
具体实施方式
在此描述本公开的实施例。然而，应该理解的是，公开的实施例仅仅是示例，并且其它的实施例可采用各种可替代的形式。附图无需按比例绘制；可夸大或最小化一些特征以示出特定部件的细节。因此，在此公开的具体结构和功能性细节不应解释为限制，而仅仅作为用于教导本领域的技术人员以多种形式利用本发明的代表性基础。如本领域的普通技术人员将理解的，参照任一附图所示出和描述的各种特征可与在一个或者更多个其他的附图中示出的特征组合，以产生未被明确地示出或描述的实施例。示出的特征的组合为典型应用提供代表性实施例。然而，与本公开的教导一致的特征的各种组合和变型可被期望用于特定的应用或实施方式。
如果一组可旋转元件被约束为在所有工况下具有绕相同轴线的相同转速，则它们彼此固定地连接。可以通过例如花键连接、焊接、压装或对同一固体机加工而使可旋转元件固定地连接。固定连接的元件之间可能发生转动角位移的轻微变化，比如由于齿隙或轴柔量(shaft compliance)导致的位移。相反，每当换挡元件完全接合时换挡元件将两个或更多个可旋转元件约束为具有围绕相同轴线的相同转速时，所述两个或更多个可旋转元件通过该换挡元件选择性地连接，并且在至少一些其它工况中它们自由地具有不同的转速。如果两个可旋转元件通过在预定的传动比下将它们的转速约束为成比例的功率流动路径而连接，则这两个可旋转元件被可驱动地连接。如果这个功率流动路径在所有工况下都能建立，则部件被固定地可驱动地连接。如果这个功率流动路径仅当一个或更多个换挡元件接合时才建立，则部件被选择性地可驱动地连接。
图1是混合动力变速驱动桥的示意图。经由输入轴10从内燃发动机机械地接收动力。动力经由半轴12和14被输送到左前车轮和右前车轮。输入轴10固定地连接到动力分配行星齿轮组的行星架16，行星架16在轴向上位于变速驱动桥的前部附近。动力分配行星齿轮组的中心齿轮18固定地连接到发电机20，发电机20位于变速驱动桥的后部。动力分配行星齿轮组的环形齿轮22固定地连接到第一链轮24。动力分配行星齿轮组的环形齿轮22固定地连接到驻车齿轮56。第二链轮26被支撑以围绕差速器轴线旋转，并且通过链条28固定地可驱动地连接到第一链轮24。第二链轮26通过主减速器行星齿轮组可驱动地连接到差速器30。主减速器行星齿轮组的中心齿轮32固定地连接到第二链轮26。主减速器行星齿轮组的行星架34固定地连接到差速器30的输入。主减速器行星齿轮组的环形齿轮36固定地连接到变速器壳体38。
牵引马达40经由扭矩倍增行星齿轮组固定地可驱动地连接到第一链轮24。扭矩倍增行星齿轮组的中心齿轮42固定地连接到牵引马达40。扭矩倍增行星齿轮组的行星架44固定地连接到第一链轮24。扭矩倍增行星齿轮组的环形齿轮46固定地连接到变速器壳体38。
将链轮24和动力分配行星齿轮组放置在变速器的前部附近(靠近发动机)提供了若干优点。首先，在差速器轴线上没有设置与发电机20和牵引马达40相对的部件。这允许使用大直径的电机。对于给定的扭矩和功率容量，更大直径的电机倾向于具有更短的轴向长度。将电机的轴向长度最小化使得变速驱动桥的总轴向长度最小化。其次，动力分配行星齿轮组和主减速器行星齿轮组可以彼此相对，使得仅这二者中较宽的一者影响变速驱动桥的总轴向长度。
泵48将润滑流体分配到齿轮和轴承。第三链轮50固定地连接到输入轴10，而第四链轮52固定地连接到泵48的轴。链条或带54固定地可驱动地连接第三链轮和第四链轮。每当发动机运行时，泵48便从油底壳中汲取流体并将其分配到齿轮和轴承。一些流体也可以被输送到较高的储存器中，使得当发动机不运行时，来自储存器的流体可以提供润滑。
图3是具有齿轮传动主减速器的替代实施例的示意图。齿轮60以与图1的链轮24类似的方式固定地连接到环形齿轮22。齿轮60与齿轮62啮合，齿轮62被支撑以围绕相对于曲轴轴线和差速器轴线二者偏离的中间轴线旋转。齿轮62固定地连接到齿轮64。齿轮64与固定地连接到差速器30的输入34的齿轮66啮合。
虽然上文描述了示例性实施例，但并非意味着这些实施例描述了权利要求包含的所有可能的形式。说明书中使用的词语为描述性词语而非限制性词语，并且应理解的是，在不脱离本公开的精神和范围的情况下可做出各种改变。如前所述，可将各个实施例的特征组合以形成本发明可能没有明确描述或示出的进一步的实施例。尽管各种实施例可能被描述为在一个或更多个期望特性方面提供优点或者优于其它实施例或现有技术实施方式，但是本领域普通技术人员应该认识到，根据具体应用和实施方式，一个或更多个特征或特性可被折衷以实现期望的总体系统属性。因此，被描述为在一个或更多个特性方面不如其它实施例或现有技术实施方式合意的实施例并不在本公开的范围之外，并可被期望用于特定应用。

Claims (18)

1.一种变速驱动桥，包括：
第一行星齿轮组，具有第一中心齿轮、固定地连接到输入轴的第一行星架和固定地连接到第一链轮的第一环形齿轮；
第二行星齿轮组，具有第二中心齿轮、固定地连接到第一环形齿轮的第二行星架和被固定地保持相对于变速器壳体不旋转的第二环形齿轮；
第一电机，固定地连接到第一中心齿轮；和
第二电机，固定地连接到第二中心齿轮，
其中，第一行星齿轮组和第二行星齿轮组以及第一电机和第二电机都沿着同一轴线定位，输入轴从第一行星齿轮组的前侧延伸，并且第二行星齿轮组以及第一电机和第二电机均位于第一行星齿轮组的后侧。
2.根据权利要求1所述的变速驱动桥，还包括：
泵，具有泵轴；
第二链轮，固定地连接到输入轴；
第三链轮，固定地连接到泵轴；和
第一链条，与第二链轮和第三链轮啮合。
3.根据权利要求1所述的变速驱动桥，还包括：
差速器，具有差速器输入；
第四链轮，固定地可驱动地连接到差速器输入；和
第二链条，与第一链轮和第四链轮啮合。
4.根据权利要求3所述的变速驱动桥，其中，第四链轮通过第三行星齿轮组固定地可驱动地连接到差速器，第三行星齿轮组具有固定地连接到第四链轮的中心齿轮、固定地连接到差速器输入的行星架和被固定地保持相对于变速器壳体不旋转的环形齿轮。
5.根据权利要求1所述的变速驱动桥，其中，第二行星齿轮组以及第一电机和第二电机位于第一链轮的后侧。
6.根据权利要求1所述的变速驱动桥，还包括固定地连接到第一环形齿轮的驻车齿轮。
7.一种变速驱动桥，包括：
沿着同一轴线依次定位的第一行星齿轮组、第二电机、第二行星齿轮组和第一电机，其中，第一电机和第二电机均固定地连接到各自的行星齿轮组的中心齿轮；和
第一链轮，固定地连接到第一行星齿轮组的环形齿轮。
8.根据权利要求7所述的变速驱动桥，还包括固定地连接到第一行星齿轮组的行星架的输入轴。
9.根据权利要求8所述的变速驱动桥，还包括：
泵，具有泵轴；
第二链轮，固定地连接到输入轴；
第三链轮，固定地连接到泵轴；和
第一链条，与第二链轮和第三链轮啮合。
10.根据权利要求8所述的变速驱动桥，其中，第一行星齿轮组的环形齿轮固定地连接到第二行星齿轮组的行星架，并且第二行星齿轮组的环形齿轮被固定地保持相对于变速器壳体不旋转。
11.根据权利要求10所述的变速驱动桥，还包括：
差速器，具有差速器输入；
第四链轮，固定地可驱动地连接到差速器输入；和
第二链条，与第一链轮和第四链轮啮合。
12.根据权利要求11所述的变速驱动桥，其中，第四链轮通过第三行星齿轮组固定地可驱动地连接到差速器，第三行星齿轮组具有固定地连接到第四链轮的中心齿轮、固定地连接到差速器输入的行星架和被固定地保持相对于变速器壳体不旋转的环形齿轮。
13.根据权利要求7所述的变速驱动桥，还包括固定地连接到第一行星齿轮组的环形齿轮的驻车齿轮。
14.一种混合动力变速驱动桥，包括：
行星齿轮组，具有中心齿轮、固定地连接到输入轴的行星架以及环形齿轮；
第一链轮，固定地连接到环形齿轮；
泵，具有泵轴；
第二链轮，固定地连接到输入轴；
第三链轮，固定地连接到泵轴；和
第一链条，与第二链轮和第三链轮啮合。
15.根据权利要求14所述的混合动力变速驱动桥，还包括：
第一电机，固定地连接到中心齿轮；和
第二电机，固定地可驱动地连接到环形齿轮。
16.根据权利要求15所述的混合动力变速驱动桥，其中，输入轴从行星齿轮组的前侧延伸，并且第一电机和第二电机在轴向上位于行星齿轮组的后侧。
17.根据权利要求16所述的混合动力变速驱动桥，还包括：
差速器，具有差速器输入；
第四链轮，固定地可驱动地连接到差速器输入；和
第二链条，与第一链轮和第四链轮啮合。
18.根据权利要求14所述的混合动力变速驱动桥，还包括固定地连接到环形齿轮的驻车齿轮。
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