CN104768820A - 集成液压供给泵 - Google Patents

集成液压供给泵 Download PDF

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CN104768820A
CN104768820A CN201380045381.9A CN201380045381A CN104768820A CN 104768820 A CN104768820 A CN 104768820A CN 201380045381 A CN201380045381 A CN 201380045381A CN 104768820 A CN104768820 A CN 104768820A
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hydraulic
pump
electric drive
hydraulic circuit
power supply
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CN104768820B (zh
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J·舒尔特
F·穆杰奥
D·马修斯
B·潘切里
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BAE Systems Controls Inc
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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
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • 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
    • B60K25/00—Auxiliary drives
    • 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
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
    • 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
    • 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
    • B60K25/00—Auxiliary drives
    • B60K2025/005—Auxiliary drives driven by electric motors forming part of the propulsion unit
    • 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
    • B60K25/00—Auxiliary drives
    • B60K25/02—Auxiliary drives directly from an engine shaft
    • B60K2025/026—Auxiliary drives directly from an engine shaft by a hydraulic transmission
    • 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
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B60W10/023—Fluid clutches
    • 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
    • B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
    • B60W10/024—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters
    • B60W10/026—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches including control of torque converters of lock-up clutches
    • 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
    • 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
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1077—Change speed gearings fluid pressure, e.g. oil pressure
    • B60W2710/1083—Change speed gearings fluid pressure, e.g. oil pressure pressure of control fluid
    • 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
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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  • Combustion & Propulsion (AREA)
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  • General Engineering & Computer Science (AREA)
  • Control Of Transmission Device (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

一种用于混合动力车辆的、包括液压动力系统的混合电驱动系统，包括：变速器，均与变速器机械连接的内燃机和电动机，用以提供车辆的发动机和/或电动机驱动动力。多个液压回路连接至电驱动液压泵。液压泵被构造为向多个液压回路提供流体循环。所述液压回路的每一个与变速器和其它相应的车辆组件连接。电力供应被构造为为电驱动液压泵提供动力，所述电力供应电连接至可充电高压(HV)电池系统。所述电驱动液压泵与多个液压回路连接，以向液压回路内提供液压。

Description

集成液压供给泵
技术领域
本发明一般地涉及一种用于混合动力车辆的液压系统，该系统包括与电驱动液压泵连接的多个液压回路。
背景技术
在包括混合动力车辆的车辆技术领域，车辆具有作为车辆组件的液压系统的车辆包括与发动机的机械连接。例如，具有自动变速器的车辆依靠发动机以最低的速度旋转，从而将电力提供给所述变速器的内部泵，以将液压压力传递至离合器，并且额外地冷却传动组件。在该系统中，发动机机械连接至变速器。
参考图1，用于混合动力车辆60的现有技术的动力系统10包括与变矩器14连接的发动机12，变矩器14又与自动变速器16连接。发动机12与变矩器14和变速器16连接，并且通过机械传动15与变速器泵18连接。电子控制模块(ECM)20与自动变速机16连接，用于电控制自动变速器16。ECM还可以独立或组合连接至车辆的其它系统，例如，发动机，自动制动系统(ABS)，动力输出(PTO)和车身控制器。ECM 20可以由混合动力车辆60的车辆低电压电气系统(电池和/或交流发电机)和/或电气系统50进行供电。变速器泵18位于变速器16内。内部变速器泵18向自动变速器16和变矩器14提供传动液流并保持流体压力。内部变速器泵18与动力转向泵22连接，从而传动15指定发动机可以驱动内部变速器泵18和动力转向泵22。动力转向泵22可以通过用于液压流体传输的液压软管24(或者可以使用高压软管)与转向流体储存器30连接。动力转向泵22也通过液压软管24与转向齿轮26连接。同样地，液压软管24将转向齿轮26连接至转向流体储存器30。转向齿轮26和泵22连接至并依赖于发动机以通过发动机旋转驱动泵22，例如，一条或多条皮带以驱动利用发动机旋转的泵。上述液压系统的一个缺点是，发动机12需要旋转以使液压泵运转。另外，发动机可能需要保持阈速度(每分钟转数(RPM))以维持液压回路中足够的流体压力，或者所述发动机可能需要在液压回路中，在最大载荷期间维持较高的RPM。因此，在该系统10中，自动变速器16依赖于发动机旋转，以将动力提供给内部变速器泵18，以向离合器提供液压，且额外地润滑和冷却传动组件。类似地，系统10利用发动机旋转，以向动力转向泵22提供动力。
其它的车辆液压系统可以使用电动液压泵供应传动液。在一种情况下，车辆的液压系统可以包括两个液压泵，一个液压泵机械连接至发动机，而第二个液压泵电连接至电源，其中这两个液压泵均向变速器提供液压。在另一实例中，车辆液压系统可包括通过电动机或者发动机进行驱动的泵，以仅向变速器提供液压。然而，上述系统的一个缺点是，它们包括与发动机的机械连接，因为它们依赖于发动机旋转以给泵提供动力。公知系统的另一缺点包括一个或多个泵用于每个车辆组件，例如，变速器，并且泵通常位于变速箱壳内，当维修泵时可能很难进入到其内部。
因此，需要有一种液压系统，当发动机以低RMP空转或关闭时，该系统可以向液压回路提供液压。还将有利的是，该液压系统提供上述的同时还增加了液压泵维护的易操作性。
发明内容
本发明包括一种集成液压供给系统,其可向自动离合器提供动力转向流体压力，传动润滑和冷却，液压压力。
在本发明的一个方面，混合电驱动系统包括用于混合动力车辆的液压动力系统，该混合动力车辆包括变速器、以及均与变速器机械连接的内燃机和电动机，为车辆提供发动机和/或电动机驱动功率。多个液压回路与电驱动液压泵连接。液压泵被构造为向多个液压回路提供流体循环。所述液压回路均连接至变速器和其他相应的车辆组件。电力供应被构造为向电驱动液压泵提供动力，并且电力供应电连接至可再充电高电压(HV)电池系统。电驱动液压泵与多个液压回路连接，以在液压回路内提供流体压力。
附图说明
本发明的这些和其它的目的、特征和优点将通过阅读作为示意性实施例的以下详细说明并结合附图而变得清晰。附图的各种特征不是按比例的，仅为示意性，以便于本领域技术人员结合具体实施方式理解本发明。在附图中：
图1是用于混合动力车辆，包括连接至发动机的变速器和动力转向液压回路的现有技术的液压系统的概略框图；
图2是根据本发明的一个实施例，用于混合动力车辆，包括连接至电动机的变速器和动力转向液压回路的液压系统的概略框图；和
图3是本发明的另一个类似于图2中所示的实施方式的实施例的概略框图，但只有一个流体泵被用于液压系统中。
具体实施方式
参考图2，显示了根据本发明的一个实施例的用于混合动力车辆150的集成液压系统100。与图1所示系统10相似的组件具有相同的附图标号。与图1所示系统相比，集成的液压系统100包括电动机110，它可以独立或组合连接至一个或多个液压单元并驱动所述液压单元，例如，电驱动动力转向泵120和电驱动变速器流体泵115。动力转向泵120通过图2所示的液压软管24向包含表示为转向齿轮26的动力转向单元的车辆组件提供流体。或者，动力转向泵和组件之间的连接可以为硬管状。动力转向泵120使用液压软管24通过转向流体储存器30提供流体，该液压软管24构成用于动力转向的液压回路。变速器流体泵115通过液压软管或软管24提供流体至自动变速器16和变矩器14，用于变速致动、润滑和冷却，而低压变速器流体被提供至流体泵115，其形成了用于变速器的液压回路。变速器16可以包括低压储存器，它也可以是单独的组件。电动机110连接至混合动力车辆150的可充电高电压(HV)电池系统140。在混合动力车辆150中，发动当车辆刹车或减速，或当发动机12驱动次级发动装置46作为发电机时，高电压电池系统由在车辆恢复模式内被驱动作为发电机的次级发动装置46进行充电发动。在一个替代实施例中，可以使用低电压(例如，<42Vdc)电池系统。
替代实施例可以使用被认为是高或低的高压流体软管，或者不被认为适合于这些类别中的任一个的液压软管。本发明的实施例描述了这样的一个实施方式，但不限于高压或低压流体软管。
在图2中所示的集成液压系统100的本发明的实施例中，变速器泵115和动力转向泵120分别与变速器和发动机物理分开，但是，变速器泵115保持与变速器的流体接触。此外，变速器泵115和动力转向泵120可以如图2所示，与电动机110相邻或与电动机110物理接触。集成液压系统100的变速器泵115和动力转向泵120不是由发动机，即，如图1所示的系统的发动机旋转而驱动的。集成液压系统100的变速器泵115和的动力转向泵120是由电动机110驱动的。
在替代实施例中，除了动力转向泵120以外，还可以使用变速器的内部泵，其中该内部泵可具有缩小的尺寸。在这种情况下，外部泵可以是较便宜的，因为其尺寸仅用于在零速、低流量的条件下运转。
由此，集成液压系统100消除了图1所示的在系统10内用于在动力转向泵120和位于变速器16内的变速器泵18之间使用传动15进行的机械连接。图2所示的系统100的机械传动15连接至发动机12、可选的机械断开44、可选的次级发动装置46、扭矩转换器14以及变速器16。如图1中所示的系统10，电子控制模块(ECM)20与自动变速器16连接，用于电控制自动变速器16。
如图2所示，动力转向泵120和变速器泵115经由液压软管24连接，用于将液压流体传送到变速器，以及传送到转向流体储存器30。动力转向泵120也经由一系列液压软管24连接至转向齿轮26，并且压力传感器34位于转向齿轮26和动力转向泵120之间。在系统100中，测量装置，例如，压力传感器提供用于控制液压回路的反馈信号。流量传感器也可以用作测量装置。压力传感器34在系统100中是可选的。同样地，液压软管24将转向齿轮26与转向流体储存器30连接。由此，本发明的实施例将多个液压系统，即，动力转向泵和变速器泵结合形成集成液压系统100。该集成液压系统100通过使用单一的电力供应110提供液压供应中心，以向包含自动变速器16和动力转向齿轮26的各种组件，如图2所示，提供流体压力。
其它可选的设备包括能源36，它可以包括空气压缩机、液压蓄能器或电池。另一个可选的设备包括：通过机械传动37或通过电连接而连接至能源36的电动机控制器38。电动机控制器38也可以经由连接通路42连接至压力传感器34。可选的发动控制器40经由另一连接通路42连接至电动机控制器38。发动控制器40经由连接通路42与可选的次级发动装置46和可选的机械断开44连接。
在一个替代实施例中，具有发动机起动/停止技术的传统的车辆可以通过除去高压系统140和可选的组件，包括发动控制器40、机械断开44以及次级发动装置46来提供，其中，所述能源36和电动机控制器38能够用于为系统提供动力。
当泵由图1的系统10内的变速器驱动时，系统100可以使用电动机110在连续速度下运转，没有必要控制。此外，与图1中所示的系统10的机械传动15的额外的机械连接相反，本发明的系统100可以在仅变速器与ECM 20连接时运转。在集成系统100内，电动机110可以在最小速度运转以向转向齿轮提供液体流，或者可选地，当传感器检测到有转向柱的运动时进行运转。此外，电动机110的速度可以基于变速器流体的要求、车辆速率、当前的齿轮变速比等而优化。电动机110的速度还可以被进一步优化，通过在转向回路(包括转向泵120，转向流体储存器30，转向齿轮26)的附加传感器34，按传感器34指示的要求释放功率。
液压动力系统100可以包括被关闭的内燃机12，而电力供应36和/或140提供输出电压，以驱动液压泵120、115。或者，内燃机12可以保持在一个规定的速度，如怠速、或其它发动机转速或RPM以使燃料效率最大化，并为电池系统充电。发动机在高电压系统和低电压系统(例如，<42V)下均可以进行充电，并且任何一种情况均可用于驱动电动机110。或者，在图2所示的系统100中，内燃机12除了为一个或多个电池系统140充电以外，还可以适于额加地向混合动力车辆150的驱动系统(未示出)提供动力。
电动机110可被设计为在发动机的两侧上接受泵，例如图2所示的动力转向泵120和变速器泵115，或者例如，一个输出与两个泵的串联。此外，电动机110也可为其它车辆系统的其它车辆单元提供动力，例如，空气压缩机、交流发电机、A/C(空调)压缩机或水泵。或者，泵可为一排，例如，动力转向泵安装在空气制动压缩机的后部。
可替代地，如图2所示，系统100可以包括具有第一液压压力和第二液压压力的变速器液压回路，其中所述第一液压压力大于所述第二液压压力。当变速器转换时，可以保持第一液压压力，而当变速器不转换时，可以保持第二液压压力。例如，该发动机和变速器可以都具有尺寸缩小的泵，并且附加的电动系统泵可以将尺寸制成用于辅助主机械泵以应对短瞬态负载，或当发动机处于关闭状态时运行以维持系统的功能。减小尺寸的机械泵节省燃料，当需要比机械泵可以供应的更多的流量或压力时，小型电操作泵可以操作。
此外，如图3所示，系统200包括电力供应，例如，HV电池系统140提供与发动机转速无关的电力供应的输出电压。
参考图3，在本发明的替代的实施例中示出了与图2所示的相同的元件具有相同的附图标记，混合动力车辆的液压动力系统200可以包括使用电动机110的单一的电驱动液压泵210，用于为多个液压回路提供动力。类似于图2中所示的系统100的实施例，单个电驱动液压泵210由电力供应提供动力，例如，电动机110与HV电池系统140电连接。可替代地，电动机110可以不由HV电池驱动，而由低电压连接组件，例如，<42Vdc进行驱动。单个电驱动液压泵210与多个液压回路连接，以在连接变速器16和动力转向齿轮26的液压回路内提供液压。本发明的集成系统的一个优点是，将几个车辆流体或液压回路组合成一个流体或液压回路。
如上所述本发明的集成液压系统100、200使用液压软管24将变速器泵115和冷却功能结合为一个回路，利用一个电驱动泵110。因为变速器泵115以连续的流速提供液体流，不依靠发动机的速度，所以将变速器泵115外用于变速器16具有包括高效率的益处。另外，由于外置的变速器泵115由电动机110驱动，从而发动机12在怠速时可以关闭。发动机怠速关闭的状态改善了车辆的燃料消耗，同时也避免了在车辆停止时转矩器不必要的损失。另外，由于必要的组件从变速器内部移除，系统100、200更容易进行维修，从而易于接触到变速器泵115和动力转向泵120。此外，系统100、200的电动机110、动力转向泵120以及变速器泵115的结合也可以包括，通过液压软管为具有可选的锁定装置或离合器14的转矩器提供液压。
本发明的系统100、200的其他优点是，在发动机不运转时变速器的运转和转向是可能的。另外，由于使用电动机110优化流体控制，从而使较低能耗成为可能。此外，当使用次级发动装置46和机械断开44时，通过锁定的转矩器14进行发动是可能的，从而提高发动效率。
虽然本发明通过其优选实施例已经进行具体示出和描述，但是，本领域技术人员可以理解的是，在形式和细节所作的变化均未脱离本申请的精神和保护范围。因此，本发明并不限于精确的形式和本文所述和所示的细节，而均落在所附权利要求的范围之内。

Claims (20)

1.一种混合动力车辆的混合电驱动系统，包括：
变速器；
均与所述变速器机械连接的内燃机和电动机，从而为车辆提供发动机和/或电动机驱动力；
与电驱动液压泵连接的多个液压回路，所述液压泵被构造为向所述多个液压回路提供流体循环，所述液压回路的每一个均连接至所述变速器和其他相应的车辆组件；
电力供应，其用于为所述电驱动液压泵提供动力，所述电力供应电连接至可充电高压电池系统，而所述电驱动液压泵与多个液压回路连接，以在液压回路内提供液压。
2.如权利要求1所述的混合电驱动系统，其中所述电驱动液压泵由内燃机独立驱动。
3.如权利要求1所述的混合电驱动系统，还包括：
具有第一电驱动泵的第一液压回路；和
具有第二电驱动泵的第二液压回路，其中，所述第一和第二电驱动泵均由电力供应驱动，所述第一和第二电驱动泵的每一个与相应的液压回路连接，且均分别远离第一和第二车辆组件。
4.如权利要求3所述的混合电驱动系统，其中，所述第一液压回路包括与所述变速器连接的变速器泵，而所述第二液压回路包括与动力转向单元连接的动力转向泵。
5.如权利要求4所述的混合电驱动系统，其中，所述第一液压回路被配置为第一液压压力，而所述第二液压回路被配置为第二液压压力。
6.如权利要求4所述的混合电驱动系统，其中，所述第一回路被配置为保持所述第一液压压力和所述第二液压压力，其中，所述第一液压压力大于所述第二液压压力；且当所述变速器转换时，所述第一液压压力形成并保持，而当所述变速器不转换时，所述第二液压压力形成并保持。
7.如权利要求1所述的混合电驱动系统，其中，所述液压动力系统被构造为，内燃机包括多个速度，所述多个速度包括包含每分钟规定转数(RPM)的阈怠速，且所述电力供应提供与发动机速度无关的输出电压。
8.如权利要求1所述的混合电驱动系统，其中，所述液压动力系统被构造为，当所述电力供应提供输出电压以驱动所述液压泵时，所述内燃机被关闭。
9.如权利要求8所述的混合电驱动系统，其中，所述电力供应包括低电压电池单元。
10.如权利要求1所述的混合电驱动系统，还包括：
与所述液压回路之一连接的压力传感器。
11.如权利要求1所述的混合电驱动系统，还包括：
用于控制所述电力供应的发动机控制器。
12.如权利要求1所述的混合电驱动系统，还包括一个或多个下述组件：
次级发动装置；
与所述次级发动装置连接的发动控制器；以及
机械断开。
13.如权利要求1所述的混合电驱动系统，其中，所述液压泵远离车辆组件。
14.一种为混合动力车辆提供液压动力的方法，包含：
将多个液压回路与电驱动液压泵连接，所述液压泵被构造为向所述多个液压回路提供流体循环；
将所述液压回路连接至相应的车辆组件；
将所述液压泵定位于远离所述车辆组件；
配置电力供应以为所述电驱动液压泵提供动力；以及
将所述电力供应电连接至可充电高压电池系统，且将所述电驱动液压泵与所述多个液压回路连接，以向包括车辆液压泵的所述液压回路内提供液压。
15.如权利要求14所述的方法，还包含：
提供具有第一电驱动泵的第一液压回路；以及
提供具有第二电驱动泵的第二液压回路，其中，所述第一和第二电驱动泵均由所述电力供应驱动；
将所述第一和第二电驱动泵的每一个与相应的所述液压回路之一连接；以及
将所述第一和第二电驱动泵定位于分别远离第一和第二车辆组件。
16.如权利要求15所述的方法，还包含：
将与变速器连接的变速器泵连接至所述第一液压回路，而将与动力转向单元连接的动力转向泵连接至所述第二液压回路。
17.如权利要求16所述的方法，还包含：
在所述变速器内具体设定第一液压压力和第二液压压力，其中，所述第一液压大于所述第二液压；以及
当所述变速器转换时，保持所述第一液压压力，而当所述变速器不转换时，保持所述第二液压压力。
18.如权利要求14所述的方法，还包含：
改变包括保持包含每分钟第一规定转数(RPM)的阈怠速的内燃机的速度，从而提供与发动机转速无关的电力供应的输出电压。
19.如权利要求18所述的方法，其中，所述内燃机连接至混合动力车辆的驱动系统，以提供额外的动力，且当电力供应提供输出电压以驱动液压泵时，所述内燃机被关闭。
20.一种用于混合动力车辆的混合动力系统，包括：
与电驱动液压泵连接的多个液压回路，所述液压泵被构造为向所述多个液压回路提供流体循环，所述液压回路的每一个连接至相应的车辆组件；
所述多个液压回路包括：
具有第一电驱动泵的第一液压回路，其中，所述第一液压回路包括与变速器连接的变速器泵；和
具有第二电驱动泵的第二液压回路，其中，所述第二液压系统包括与动力转向单元连接的动力转向泵，所述第一和第二电驱动泵均由电力供应驱动，且所述第一和第二电驱动泵分别远离它们各自的车辆组件；以及
电力供应，用于为所述电驱动液压泵提供动力，所述电力供应连接至可充电高压(HV)电池系统，而所述电驱动液压泵与所述多个液压回路连接，从而向液压回路内提供液压。
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US9139078B2 (en) 2015-09-22
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EP2890597A1 (en) 2015-07-08
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US20140060019A1 (en) 2014-03-06
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CA2883099C (en) 2019-12-17

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