CN104853969A - 动力传递装置 - Google Patents

动力传递装置 Download PDF

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Publication number
CN104853969A
CN104853969A CN201280077511.2A CN201280077511A CN104853969A CN 104853969 A CN104853969 A CN 104853969A CN 201280077511 A CN201280077511 A CN 201280077511A CN 104853969 A CN104853969 A CN 104853969A
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China
Prior art keywords
parking device
whirler
parking
torque
wheel
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Granted
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CN201280077511.2A
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CN104853969B (zh
Inventor
北畠弘达
铃木阳介
岩濑雄二
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Toyota Motor Corp
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Toyota Motor Corp
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    • 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
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • B60W10/182—Conjoint control of vehicle sub-units of different type or different function including control of braking systems including control of parking brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
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    • 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
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    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
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    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
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Abstract

本发明具备：行星齿轮机构；与行星齿轮机构的太阳轮连接的第一旋转机；与行星齿轮机构的行星轮架连接的发动机及单向离合器；与行星齿轮机构的齿圈连接的第二旋转机及驱动轮；及与齿圈连接的驻车装置，当发出释放驻车装置的指令时(步骤S10-是)，使第一旋转机正转(步骤S30)并释放驻车装置(步骤S40)。在上坡路(步骤S20-是)上发出释放驻车装置的指令的情况下，可以使第一旋转机正转并释放驻车装置。

Description

动力传递装置
技术领域
本发明涉及动力传递装置。
背景技术
以往，存在具备单向离合器的动力传递装置。例如，专利文献1中公开了一种混合动力型车辆，具有：内燃发动机；电机装置，被输入来自该内燃发动机的旋转；电动马达，被供给电流而驱动；差动齿轮装置，由至少3个齿轮要素构成，第一齿轮要素与所述电机装置连结，第二齿轮要素与输出轴连结，第三齿轮要素与所述内燃发动机连结；及制动单元，使所述第三齿轮要素的旋转停止。
现有技术文献
专利文献
专利文献1：日本特开平8-295140号公报
发明内容
发明要解决的课题
在此，在坡路等上将驻车装置卡合等的情况下，在释放驻车装置时有时会向单向离合器输入转矩。希望能够抑制对于单向离合器的转矩的输入。
本发明的目的在于提供一种能够抑制释放驻车装置时的对于单向离合器的转矩的输入的动力传递装置。
用于解决课题的手段
本发明的动力传递装置的特征在于，具备：行星齿轮机构；与所述行星齿轮机构的太阳轮连接的第一旋转机；与所述行星齿轮机构的行星轮架连接的发动机及单向离合器；与所述行星齿轮机构的齿圈连接的第二旋转机及驱动轮；及与所述齿圈连接的驻车装置，当发出释放所述驻车装置的指令时，使所述第一旋转机正转并释放所述驻车装置。
在上述动力传递装置中，优选的是，在上坡路上发出释放所述驻车装置的指令的情况下，使所述第一旋转机正转并释放所述驻车装置。
在上述动力传递装置中，优选的是，所述动力传递装置还具备：释放所述驻车装置的促动器；及对所述促动器进行电气控制的控制装置，当发出释放所述驻车装置的指令时，所述控制装置使所述第一旋转机正转并通过所述促动器而释放所述驻车装置。
发明效果
当发出释放驻车装置的指令时，本发明的动力传递装置使第一旋转机正转并释放驻车装置。根据本发明的动力传递装置，起到能够抑制释放驻车装置时的对于单向离合器的转矩的输入的效果。
附图说明
图1是实施方式的车辆的梗概图。
图2是实施方式的驻车装置的概略结构图。
图3是表示实施方式的动力传递装置的动作卡合表的图。
图4是单驱动EV模式的共线图。
图5是双驱动EV模式的共线图。
图6是驻车卡合时作用的转矩的说明图。
图7是驻车释放时作用的转矩的说明图。
图8是表示实施方式的停车释放时的动作的共线图。
图9是实施方式的控制的流程图。
图10是实施方式的控制的时间图。
具体实施方式
以下，参照附图，详细说明本发明的实施方式的动力传递装置。需要说明的是，没有通过该实施方式来限定本发明。而且，下述的实施方式中的构成要素包括本领域技术人员能够容易想到或实质上相同的要素。
[实施方式]
参照图1至图10，说明实施方式。本实施方式涉及动力传递装置。图1是实施方式的车辆的梗概图，图2是实施方式的驻车装置的概略结构图，图3是表示实施方式的动力传递装置的动作卡合表的图，图4是单驱动EV模式的共线图，图5是双驱动EV模式的共线图，图6是驻车卡合时作用的转矩的说明图，图7是在驻车释放时作用的转矩的说明图，图8是实施方式的停车释放时的动作的共线图，图9是实施方式的控制的流程图，图10是实施方式的控制的时间图。
本实施方式的车辆100具有将行星齿轮机构10的发动机输入要素固定的单向离合器20。车辆100搭载HV系统，该HV系统具有使发动机1停止且将单向离合器20固定且通过第一旋转机MG1和第二旋转机MG2进行双驱动的EV行驶模式。
在坡路上从驻车装置3c卡合的状态开始释放驻车装置3时，经由行星齿轮机构10向输入轴2传递转矩，存在单向离合器20被输入大的转矩的可能性。相对于此，本实施方式的动力传递装置1-1如图8所示，在发出释放驻车装置3的指令的情况下，使第一旋转机MG1正转。由此，能抑制在驻车装置3的释放时向单向离合器20输入转矩的情况。
如图1所示，车辆100是具有发动机1、第一旋转机MG1及第二旋转机MG2作为动力源的混合动力(HV)车辆。车辆100可以是通过外部电源能够充电的插电式混合动力(PHV)车辆。车辆100除了包括上述动力源之外，还包括行星齿轮机构10、单向离合器20、驻车装置3、驱动轮32。
另外，本实施方式的动力传递装置1-1包括发动机1、行星齿轮机构10、第一旋转机MG1、第二旋转机MG2、单向离合器20、驻车装置3及驱动轮32。动力传递装置1-1还可以包括ECU50。动力传递装置1-1能够适用于FF(前置发动机前轮驱动)车辆或RR(后置发动机后轮驱动)车辆等。动力传递装置1-1例如以轴向成为车宽方向的方式搭载于车辆100。
作为燃机的发动机1将燃料的燃烧能量转换成输出轴的旋转运动而输出。发动机1的输出轴与输入轴2连接。输入轴2在与发动机1的输出轴同轴上且输出轴的延长线上配置。输入轴2与行星齿轮机构10的行星轮架14连接。
行星齿轮机构10是单小齿轮式，具有太阳轮11、小齿轮12、齿圈13及行星轮架14。齿圈13在与太阳轮11同轴上且太阳轮11的径向外侧配置。小齿轮12配置在太阳轮11与齿圈13之间，且与太阳轮11及齿圈13分别啮合。小齿轮12由行星轮架14支承为旋转自如。行星轮架14与输入轴2连结，且与输入轴2一体旋转。因此，小齿轮12能够与输入轴2一起绕输入轴2的中心轴线旋转(公转)，且由行星轮架14支承而能够绕着小齿轮12的中心轴线旋转(自转)。
在太阳轮11上连接有第一旋转机MG1的旋转轴33。第一旋转机MG1的转子经由旋转轴33而与太阳轮11连接，与太阳轮11一体旋转。在齿圈13上连接有副轴驱动齿轮25。副轴驱动齿轮25是与齿圈13一体旋转的输出齿轮。副轴驱动齿轮25设于圆筒形状的圆筒构件15的外周面，齿圈13设于内周面。
副轴驱动齿轮25与副轴从动齿轮26啮合。副轴从动齿轮26经由副轴27而与驱动小齿轮28连接。副轴从动齿轮26与驱动小齿轮28一体旋转。而且，在副轴从动齿轮26上啮合有减速齿轮35。减速齿轮35与第二旋转机MG2的旋转轴34连接。即，第二旋转机MG2的旋转经由减速齿轮35向副轴从动齿轮26传递。减速齿轮35比副轴从动齿轮26小径，使第二旋转机MG2的旋转减速并向副轴从动齿轮26传递。
驱动小齿轮28与差动装置30的差动环齿轮29啮合。差动装置30经由左右的驱动轴31而与驱动轮32连接。齿圈13经由副轴驱动齿轮25、副轴从动齿轮26、驱动小齿轮28、差动装置30及驱动轴31而与驱动轮32连接。而且，第二旋转机MG2连接于齿圈13与驱动轮32的动力传递路径，能够向齿圈13及驱动轮32分别传递动力。
第一旋转机MG1及第二旋转机MG2分别具备作为马达(电动机)的功能和作为发电机的功能。第一旋转机MG1及第二旋转机MG2经由逆变器而与蓄电池连接。第一旋转机MG1及第二旋转机MG2能够将从蓄电池供给的电力转换成机械的动力而输出，并且能够由输入的动力来驱动而将机械的动力转换成电力。由旋转机MG1、MG2发电的电力能够蓄积于蓄电池。作为第一旋转机MG1及第二旋转机MG2，可以使用例如交流同步型的电动发电机。
在本实施方式的车辆100中，在与发动机1同轴上，从接近发动机1的一侧依次配置单向离合器20、副轴驱动齿轮25、行星齿轮机构10及第一旋转机MG1。而且，本实施方式的动力传递装置1-1为输入轴2与第二旋转机MG2的旋转轴34配置在不同的轴上的多轴式。
单向离合器20设于输入轴2。单向离合器20是限制行星轮架14的旋转的限制机构。单向离合器20允许以发动机1的运转时的输入轴2的旋转方向为正方向的情况下的输入轴2的正方向的旋转，限制负方向的旋转。
驻车装置3是限制动力传递装置1-1的动力传递路径的旋转的限制装置。驻车装置3限制将齿圈13与驱动轮32连接的动力传递路径的旋转。本实施方式的驻车装置3与齿圈13连接，限制具有齿圈13的圆筒构件15的旋转。如图2所示，驻车装置3具有驻车齿轮4、驻车杆5、促动器6。
驻车齿轮4设置在圆筒构件15的外周面。驻车杆5设置成能够在锁定位置与解锁位置之间移动，该锁定位置是驻车杆5与驻车齿轮4啮合而驱动轮32不能旋转的位置，解锁位置是驻车杆5与驻车齿轮4未啮合而允许驱动轮32的旋转的位置。图2中示出了解锁位置的驻车杆5。驻车杆5通过弹簧等施力构件接受从锁定位置朝向解锁位置的方向的作用力。促动器6能够使驻车杆5从解锁位置向锁定位置移动而将驻车装置3卡合，并且能够使驻车杆5从锁定位置向解锁位置移动而释放驻车装置3。
促动器6在将驻车装置3卡合时使杆7向图2中箭头A所示的卡合方向移动。由此，杆7的前端的锥部进入驻车杆5与支撑构件8之间，将驻车杆5朝向驻车齿轮4按压。由杆7按压的驻车杆5如图2中箭头B所示的那样移动，与驻车齿轮4啮合而限制驻车齿轮4的旋转。
另一方面，促动器6在释放驻车装置3时使杆7向箭头A所示的卡合方向的相反方向移动。由此，驻车杆5借助施力构件的作用力向解锁位置移动，驻车装置3释放。
返回图1，ECU50具有作为对车辆100进行控制的控制装置的功能。ECU50是具有计算机的电子控制单元，控制发动机1、第一旋转机MG1、第二旋转机MG2及驻车装置3。而且，向ECU50输入表示与发动机1相关的信息、与第一旋转机MG1相关的信息、与第二旋转机MG2相关的信息、与车速相关的信息、与蓄电池相关的信息、与油门开度等对操作设备的操作输入相关的信息等各种信息的信号。
ECU50与驻车传感器36电连接，能够取得对未图示的驻车按钮的操作输入。在对驻车按钮作出将驻车装置3卡合的操作输入时，驻车传感器36输出表示驻车按钮的状态为1的信号。当从驻车传感器36输出表示驻车按钮的状态为1的信号时，ECU50检测该信号作为将驻车装置3卡合的指令(以下，也称为“卡合指令”)。ECU50当检测到卡合指令时，对驻车装置3的促动器6输出使驻车杆5向锁定位置移动的指令。
另外，当对驻车按钮作出释放驻车装置3的操作输入时，驻车传感器36输出表示驻车按钮的状态为0的信号。当从驻车传感器36输出表示驻车按钮的状态为0的信号时，ECU50检测该信号作为释放驻车装置3的驾驶员的指令(以下，也称为“释放指令”)。ECU50当检测到释放指令时，对驻车装置3的促动器6输出使驻车杆5向解锁位置移动的指令。
ECU50与前后G传感器37电连接。前后G传感器37是检测车辆100的前后方向的加速度的传感器。ECU50基于与车辆100的前后G或输入转矩、车速、油门相关的信息、与制动器相关的信息等，能够判断停车于坡路的情况。例如，ECU50在车速0的停车时基于从前后G传感器37输出的信号，能够取得车辆100的前后方向的倾斜角度、换言之车辆100停车的路面的斜度。
在车辆100中，能够选择性地执行混合动力(HV)行驶或EV行驶。HV行驶是以发动机1为动力源而使车辆100行驶的行驶模式。在HV行驶中，除了发动机1之外，还可以将第二旋转机MG2作为动力源。
EV行驶是以第一旋转机MG1或第二旋转机MG2中的至少任一方为动力源而行驶的行驶模式。在EV行驶中，能够使发动机1停止而进行行驶。作为EV行驶模式，本实施方式的动力传递装置1-1具有以第二旋转机MG2为单独的动力源而使车辆100行驶的单驱动EV模式(单独马达EV模式)和以第一旋转机MG1及第二旋转机MG2为动力源而使车辆100行驶的双驱动EV模式(双马达EV模式)。需要说明的是，在本说明书中，将单驱动EV模式也记载为“EV1模式”，将双驱动EV模式也记载为“EV2模式”。
在图3的卡合表中，第一旋转机MG1及第二旋转机MG2这栏的○标记表示输出行驶用的转矩，×标记表示未输出行驶用的转矩，即未输出转矩或输出行驶用以外的转矩或进行再生等。另外，“B”栏表示单向离合器20的状态，○标记表示卡合，×标记表示释放。在此，单向离合器20的卡合或释放不是直接控制的，而是根据输入轴2的旋转状态产生的。
在HV模式中，发动机1旋转，输入轴2正转，由此单向离合器20成为释放状态。图4所示的单驱动EV模式(EV1模式)无论单向离合器20是释放和卡合中的哪一种状态都能够执行。在各共线图中，S1轴表示太阳轮11及第一旋转机MG1的转速。另外，C1轴表示行星轮架14及发动机1的转速，R1轴表示齿圈13的转速。齿圈13的转速与第二旋转机MG2的转速及驱动轴31的转速成比例。
在图5所示的双驱动EV模式(EV2模式)中，单向离合器20成为卡合状态。在双驱动EV模式中，在前进时第一旋转机MG1输出负转矩。单向离合器20卡合而限制行星轮架14的旋转，由此承受第一旋转机MG1的输出转矩(MG1转矩)的反力而发挥功能，从齿圈13输出与MG1转矩对应的正转矩。从齿圈13输出的正转矩向驱动轮32传递，产生驱动车辆100前进的驱动力。
在此，如以下参照图6及图7进行说明的那样，在坡路上释放驻车装置3时，有时会向单向离合器20输入转矩。在坡路上将驻车装置3卡合时，如图6所示，转矩Tw作用于驻车装置3。在上坡路，使车辆100后退的方向的转矩作用于驱动轮32。由此，在驱动轮32与驻车装置3之间的动力传递路径产生扭转，向驻车装置3输入转矩Tw。
从该状态起，当驻车装置3释放时，如图7所示，转矩Tw从齿圈13向行星轮架14传递，向单向离合器20输入。针对这样的转矩Tw的输入，考虑了提高单向离合器20的强度的对策，但是会导致装置的大型化和成本增加。
当发出释放驻车装置3的司令时，本实施方式的动力传递装置1-1使第一旋转机MG1正转并释放驻车装置3。由此，能抑制在驻车装置3的释放时转矩向单向离合器20输入的情况。
参照图8至图10，说明本实施方式的动力传递装置1-1的动作。在图10的时间图中，(a)是从驻车传感器36输出的信号，表示驻车按钮的状态。而且，(b)是从ECU50对驻车装置3的促动器6的驻车指令，指令信号1表示将驻车装置3卡合的指令，指令信号0表示将驻车装置3释放的指令。(c)表示坡路判定结果，例如，在基于由前后G传感器37检测到的前后G而算出的路面斜度是表示规定的角度以上的上坡路的值的情况下，(c)为“是”。(d)是MG1转速，表示第一旋转机MG1的转速。在MG1转速中，正转表示与由发动机1驱动而旋转的行星轮架14的旋转方向同方向的旋转。(e)表示发动机转速。
图10示出了在上坡路上从驻车装置3被卡合的状态起检测到对驻车装置3的释放指令的情况下的动作。图9所示的流程图例如在驻车装置3卡合时以规定的间隔反复执行。
在步骤S10中，通过ECU50，判定是否检测到驻车装置3的释放意图。ECU50基于从驻车传感器36输出的信号进行步骤S10的判定。从驻车传感器36输出的信号从驾驶员发出的将驻车装置3卡合的指令(1：卡合)切换成驾驶员发出的将驻车装置3释放的指令(0：释放)的情况下，在步骤S10中作出肯定判定。在图10中，在t1时刻，驻车传感器36的信号从1(卡合指令)变化为0(释放指令)。因此，在t1时刻以后在步骤S10中作出肯定判定。步骤S10的判定的结果是，判定为检测到驻车装置3的释放意图的情况下(步骤S10-是)进入步骤S20，在不是那样的情况下(步骤S10-否)结束本控制流程。
在步骤S20中，通过ECU50，判定是否检测到坡路。ECU50例如在坡路判定结果为“是”的情况下，在步骤S20中进行肯定判定。在图10中，坡路判定为“是”，在步骤S20中作出肯定判定。步骤S20的判定的结果是，判定为检测到坡路的情况下(步骤S20-是)进入步骤S30，在不是那样的情况下(步骤S20-否)进入步骤S40。
在步骤S30中，通过ECU50使MG1转速上升。ECU50使第一旋转机MG1产生正转矩，使第一旋转机MG1正转。由此，如图8所示，行星轮架14正转。在图10中，在t2时刻，MG1转速开始上升。当MG1转速上升至作为目标的转速N1时，MG1转速维持为N1。步骤S30被执行后进入步骤S40。
在步骤S40中，通过ECU50，解除(释放)驻车装置3。ECU50对驻车装置3的促动器6输出释放驻车装置3的司令。在图10中，在t3时刻，对促动器6的驻车指令从1(卡合)切换为0(释放)。促动器6根据来自ECU50的释放指令，使驻车杆5从锁定位置向解锁位置移动，将驻车装置3释放。此时，行星轮架14正转，因此即使驻车装置3释放而转矩Tw向行星轮架14传递，也能抑制单向离合器20卡合。因此，能够抑制在驻车装置3的释放时向单向离合器20输入转矩而负荷作用于单向离合器20的情况。步骤S40被执行后本控制流程结束。
ECU50在驻车装置3释放时，使MG1转速为0。在图10中，ECU50在检测到驻车杆5处于解锁位置之后的t4时刻，输出使MG1转速为0的指令。
如以上说明的那样，当发出释放驻车装置3的指令时，本实施方式的动力传递装置1-1使第一旋转机MG1正转而释放驻车装置3。由此，能够抑制释放驻车装置3时的对单向离合器20的转矩输入。例如，能够期待抑制在释放驻车装置3时过大的转矩作用于单向离合器20而单向离合器20的负荷变得过大的情况的效果。本实施方式的动力传递装置1-1能够提高单向离合器20的耐久性。
另外，在上坡路上发出释放驻车装置3的指令的情况下，本实施方式的动力传递装置1-1使第一旋转机MG1正转并释放驻车装置3。在平坦路或下坡路上省略使第一旋转机MG1正转的控制，由此能够使驻车装置3的释放时间提前。而且，在未作出上坡路判定的情况下省略使第一旋转机MG1正转的控制，由此能够抑制电力消耗。
另外，本实施方式的动力传递装置1-1具备释放驻车装置3的促动器6和对促动器6进行电气控制的ECU50(控制装置)，当发出释放驻车装置3的指令时，ECU50使第一旋转机MG1正转并通过促动器6释放驻车装置3。在具有通过所谓线控换档来控制驻车装置3的结构的动力传递装置1-1中，在ECU50从检测驾驶员的释放指令到对促动器6输出释放驻车装置3的指令期间，容易进行使第一旋转机MG1正转的控制，能够更可靠地抑制释放驻车装置3时的对单向离合器20的转矩输入。
[实施方式的第一变形例]
在上述实施方式中，在坡路上发出释放驻车装置3的指令的情况下，动力传递装置1-1使第一旋转机MG1正转并释放驻车装置3，但并不局限于停车于坡路上的情况，若发出释放驻车装置3的指令，则可以使第一旋转机MG1正转并释放驻车装置3。
另外，不局限于上坡路，在下坡路上发出释放驻车装置3的指令的情况下，也可以使第一旋转机MG1正转并释放驻车装置3。例如，可考虑动力传递装置1-1具有在下坡路上将驻车装置3卡合时在动力传递路径产生的转矩成为使单向离合器20卡合的方向的转矩的结构。在这样的动力传递装置1-1中，在下坡路上发出释放驻车装置3的指令的情况下，只要使第一旋转机MG1正转并释放驻车装置3，就能够抑制释放驻车装置3时的对单向离合器20的转矩输入。
[实施方式的第二变形例]
在上述实施方式(参照图9)中，当发出释放驻车装置3的指令时(步骤S10-是)，动力传递装置1-1使第一旋转机MG1正转(步骤S30)，然后释放驻车装置3，但也可以取而代之，同时执行使第一旋转机MG1正转和释放驻车装置3。例如，ECU50可以同时输出使第一旋转机MG1正转的指令和释放驻车装置3的指令。
[实施方式的第三变形例]
在上述实施方式中，电气控制驻车装置3的卡合及释放，但也可以取而代之，将与换档操作联动地通过金属丝等进行机械卡合及释放的驻车装置3搭载于车辆100。这种情况下，例如，可以基于检测换档操作的传感器的检测结果来检测或预测释放驻车装置3的指令。例如，可以在检测到换档杆从驻车(P)移动的操作的情况下，检测或预测对驻车装置3的驾驶员的释放指令，使第一旋转机MG1正转。
[实施方式的第四变形例]
在上述实施方式中，燃机为发动机1，但也可以取代发动机1而将其他的燃机搭载于车辆100。而且，在上述实施方式中，驻车装置3设于圆筒构件15，但驻车装置3也可以配置在其他的部位。驻车装置3例如可以限制第二旋转机MG2的旋转轴34的旋转。即，驻车装置3与齿圈13可以直接连接，也可以经由齿轮机构等连接。而且，在上述实施方式中，通过驻车按钮进行驻车装置3的卡合指令或释放指令的操作指令，但操作指令没有限定为在驻车按钮进行，例如，也可以是对换档杆等的操作输入，也可以是基于触摸面板的操作指令，还可以是基于声音的操作指令。
上述的实施方式及变形例中公开的内容可以适当组合而执行。
标号说明
1-1  动力传递装置
1  发动机
3  驻车装置
10  行星齿轮机构
11  太阳轮
12  小齿轮
13  齿圈
14  行星轮架
20  单向离合器
32  驱动轮
36  驻车传感器
37  前后G传感器
50  ECU
100  车辆

Claims (3)

1.一种动力传递装置，其特征在于，具备：
行星齿轮机构；
与所述行星齿轮机构的太阳轮连接的第一旋转机；
与所述行星齿轮机构的行星轮架连接的发动机及单向离合器；
与所述行星齿轮机构的齿圈连接的第二旋转机及驱动轮；及
与所述齿圈连接的驻车装置，
当发出释放所述驻车装置的指令时，使所述第一旋转机正转并释放所述驻车装置。
2.根据权利要求1所述的动力传递装置，其中，
在上坡路上发出释放所述驻车装置的指令的情况下，使所述第一旋转机正转并释放所述驻车装置。
3.根据权利要求1所述的动力传递装置，其中，
所述动力传递装置还具备：
释放所述驻车装置的促动器；及
对所述促动器进行电气控制的控制装置，
当发出释放所述驻车装置的指令时，所述控制装置使所述第一旋转机正转并通过所述促动器而释放所述驻车装置。
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CN110770479A (zh) * 2017-06-14 2020-02-07 德纳汽车系统集团有限责任公司 可缩放的致动机构及其操作方法
CN107725768A (zh) * 2017-10-31 2018-02-23 宁波上中下自动变速器有限公司 一种用于车辆的档位识别装置及车辆
CN107725768B (zh) * 2017-10-31 2019-08-30 宁波上中下自动变速器有限公司 一种用于车辆的档位识别装置及车辆
CN113614417A (zh) * 2019-03-25 2021-11-05 舍弗勒技术股份两合公司 电车桥、动力总成单元和用于操作驻车锁止设备的方法

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