CN1550368A - 混合式驱动装置 - Google Patents
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Abstract
本发明提供一种混合式驱动装置。电动机(25)是作业机的行驶用驱动源。由起动机G和行驶用电动机(25)共用驱动电路(10)。在起动模式下通过开关(35、36)使驱动电路(10)与起动机G侧连接并起动发动机(E)。在发动机独立运转后,通过开关(35、36)使发电机(G)与调整器(31)连接,并使驱动电路(10)与行驶用电动机(25)连接。这样,可一面给电池(14)充电,一面由电池(14)来驱动行驶用电动机(25)。由此,通过使作业机行驶用电动机和起动机共用驱动电路,可简化电路结构。
Description
技术领域
本发明涉及作为作业机等的动力源而具有内燃机和电动机的混合式驱动装置,具体是涉及可使用作为作业机等的动力源的电动机和发动机的起动机来共用驱动电路的混合式驱动装置。
背景技术
在农业用的作业机中,公知有可利用发动机的动力和电动机的动力的所谓的混合式的发动机驱动式作业机。例如,在特开2001-161114号公报中,提出了在由发动机驱动的作业机的负荷小的时候,依靠发动机的剩余动力来驱动发电机并把剩余电力储存在电池内,且依靠这些由发电机发生的电力和来自电池的电力来驱动电动机的载人作业机的提案。根据该载人作业机,由于发动机负荷总是保持较大,因而可使发动机进行高效的运转。
在上述混合式驱动装置中,发动机的起动机和作为作业机的动力源的电动机各自分别需要驱动电路。为了简化这种混合式驱动装置,通过把发电机兼用电动机作为起动机使用,并且共用起动用逆变器电路和发电机输出的调整器,来实现电路的部分共享(参照特开2002-223594号公报)。然而,目前尚未对基于共用驱动电路的观点的改善进行开发。
发明内容
鉴于上述情况,本发明的目的是提供一种可通过简化驱动电路来简化电力控制电路结构的混合式驱动装置。
为了达到上述目的,本发明提供一种混合式驱动装置,该混合式驱动装置具有:由发动机驱动的发电机,由该发电机充电的电池,动力用电动机以及上述发动机的起动机,其第1特征是,具有:驱动电路,依靠从上述发电机和上述电池提供的电力来驱动上述动力用电动机;以及切换单元,在发动机起动时使上述驱动电路与上述起动机连接。根据第1特征,通过使从电力供给源到动力用电动机和起动机的电力供给路径相同,来实现动力用电动机和起动机的驱动电路共用化。因此,可简化电力控制电路系统,并且由于形成同一驱动电路系统,因而可提高系统的可靠性。
并且,本发明的第2特征是,上述动力用电动机和上述起动机是具有磁铁转子和三相定子绕组的无刷电动机;上述驱动电路至少具有逆变器电路。根据第2特征,由于对作为无刷电动机的动力用电动机和起动机,电力供给源和通电方向都是相同的,因而仅调节同一逆变器电路的动作控制量就能对两者进行适当的控制。
并且,本发明的第3特征是,上述发电机是具有作为上述起动机的功能的电动机兼用发电机。
并且,本发明的第4特征是,具有把上述发电机的输出电力调整成电池充电用的电力的调整器;上述切换单元构成为,在发动机独立运转后使上述发电机与上述驱动电路断开并与上述调整器连接。根据第4特征,在发动机独立运转后,由发动机驱动的发电机的输出电力由调整器调整并被提供给电池。因此,动力用电动机仅在发动机独立运转后才能驱动,从而可避免在电池容易放电的环境中仅依靠电池电力驱动。
并且,本发明的第5特征是,在第4特征的基础上,构成为使上述驱动电路与上述动力用电动机连接。根据第5特征,通过发动机的驱动来进行对电池的充电,而另一方面,在发动机独立运转后,通过使动力用电动机与驱动电路连接来进行驱动。
而且,本发明的第6特征是,使上述发动机进行维持等速的运转并驱动作业机;构成由上述动力用电动机驱动上述作业机行驶。根据第6特征,作业机由发动机等速驱动,可通过调整作业机的行驶速度来维持发动机的适量的负荷。
附图说明
图1是本发明一实施方式的驱动装置的主要部分的电路图。
图2是包括本发明一实施方式的驱动装置的除雪机的左侧视图。
图3是除雪机的主要部分的俯视图。
图4是表示除雪机的整体系统的方框图。
图5是表示开关的切换状态的图。
图6是本发明一实施方式的驱动装置的主要部分的处理的流程图。
具体实施方式
以下参照附图对本发明一实施方式进行详细说明。图2是本发明一实施方式的作为发动机驱动式作业机的除雪机的侧视图。除雪机1,在具有左右履带2的行驶部框架3上,安装可上下摆动的具有除雪作业部4和驱动该除雪作业部4的发动机E的车体框架5。发动机E被控制成按照等转速运转并驱动作为作业机的除雪作业部4。框架升降机构6通过使车体框架5的前部升降来使车体框架5上下摆动。行驶部框架3结合有向后上方延伸的左右操作手柄7。
操作手柄7是操作者用于操作除雪机1的操作手柄,在前端具有把手8,在把手8的近旁具有除雪机1的转弯操作扳手9。在操作手柄7的左侧操作手柄上设置制动操作杆11,在右侧的操作手柄上设置离合操作按钮(未作图示)。在左右操作手柄间从上顺序排列设置操作盘12、控制部13和电池14。
在发动机E的输出轴15上设置有驱动皮带轮16和电磁离合器17。除雪作业部4由设置在车体框架3的前部的螺旋辊18、鼓风机19和喷射器20构成,并具有使螺旋辊18和鼓风机19旋转的旋转轴21。旋转轴21与从动皮带轮22结合。
发动机E的动力由电磁离合器17传递到驱动皮带轮16,通过皮带23被传递到从动皮带轮22。这样,通过旋转轴21使螺旋辊18和鼓风机19旋转,由螺旋辊18收集起来的雪由鼓风机19送入到喷射器20内并向远方吹散。
车体左右履带2具有由作业机行驶用电动机25驱动的驱动轮24。左右驱动轮24通过用于连接或切断来自行驶用电动机25的动力的未作图示的离合器,与行驶用电动机25连结。行驶用电动机25是把磁场用永磁铁设置在转子内,把三相电机子绕组设置在定子内,并由具有逆变器电路的下述驱动电路10驱动控制的永磁铁同步电动机,即无刷电动机。
图3是除雪机1的主要部分的俯视图,主要表示发动机和发电机。在图3中,发电机G与发动机E邻接配置。在发动机E的输出轴15上设置发电机用皮带轮26,在发电机G的输入轴27上设置从动皮带轮29。在皮带轮26和29间搭设皮带30,发动机E的动力被传递到发电机G的输入轴27。
图4是表示除雪机1的整体系统的方框图,与图2、图3相同的符号表示同一部分或同等部分。在该图中,与发动机E连结的发电机G是在转子内设置永磁铁,在定子内设置电机子绕组的与上述行驶用电动机25同样的永磁铁同步电机,兼用作发动机的起动机。驱动电路10是用于控制发电机G和行驶用电动机25的驱动电路,具有逆变器电路。电池14作为驱动发电机G和行驶用电动机25的动力源而使用。设置有在把由发电机G发生的电力储存于电池14内时使用的调整器31。驱动电路10与操作盘12连接。操作盘12通过操作员的操作,输出发动机E的起动和停止指令、以及除雪机1的行驶速度和除雪机1的行驶方向的指示。
在发动机E起动时,从电池14通过驱动电路10向发电机G提供电力,该发电机G作为起动机而起作用。另一方面,在发动机E起动后,由发动机驱动的发电机G的电力被储存在电池14内。而且,调整器31的输出或者储存在电池14内的电力通过驱动电路10被提供给行驶用电动机25。储存在电池14内的电力电压由调整器31调整。这样,驱动电路10在作为起动机的发电机G的驱动和行驶用电动机25的驱动方面被共用。
接下来,对驱动电路10和用于共用该驱动电路10的切换控制进行说明。图1是表示本实施方式的驱动装置的主要部分的电路图。在该图中,驱动电路10具有:构成逆变器的开关电路28,以及驱动该开关电路28的驱动器32、运算部33、和分流器34。
开关电路28包括六个MOSFET即金属氧化物半导体场效晶体管(以下仅称“FET”)281~286。在上侧配置有FET281~283,在下侧配置有FET284~286。FET281~286分别与回扫二极管D1、D2、D3、D4、D5、D6并联连接。驱动器32向FET281~286的栅极施加驱动电压。
驱动器32,在把发电机G作为起动机使用时,顺序向FET281~286的栅极施加驱动电压。可用数字信号处理器构成的运算部33决定发生驱动电压的周期,即FET281~286的切换周期,并将其输出到驱动器32。运算部33进一步根据通过分流器34检测的发电机G的各相的通电电流值来检测转子位置。
设置有用于使驱动电路10与发电机G和行驶用电动机25选择性连接的开关或继电器35、36。开关35、36分别设置在从发电机G和行驶用电动机25的三相定子绕组引出的线L1、L2、L3上,并根据来自操作盘12的指示来切换。
设置有对根据来自上述操作盘12的指示进行的开关35、36的切换、和驱动开关电路28的驱动器32和运算部33的动作进行整体控制的控制部(未作图示)。该控制部可由微计算机构成,关于处理主要部分,将在后面参照流程图进行说明。
图5A~图5E是表示开关35、36的切换例的图,使用设置在线L1上的开关35、36代表其他线L2、L3上的开关。
图5A表示发动机起动时的开关35、36的位置。开关35、36被切换成使驱动电路10与发电机G连接,发电机G由驱动电路10驱动。
图5B表示发动机起动后的开关35、36的位置。开关35、36被切换到中间位置(断开位置),发动机E独立运转。
图5C表示电池充电时的开关35、36的位置。开关35被切换到中间位置,开关36被切换到调整器31侧。因此,行驶用电动机25不被驱动,使用由发动机E驱动的发电机G的发电电力给电池14充电。
图5D表示在使除雪机1行驶时的开关35、36的位置。开关35被切换到行驶用电动机侧,开关36被切换到调整器31侧。因此,使用由发动机E驱动的发电机G的发电电力给电池14充电,同时行驶用电动机25依靠来自电池14的电流和来自调整器31的供给电力来驱动。
图5E表示在发动机停止中使除雪机1行驶时的开关35、36的位置。开关35被切换到行驶用电动机侧,开关36被切换到中间位置。因此,在发动机停止中,行驶用电动机25由电池14驱动。
图6是本实施方式的驱动装置的控制流程图。在步骤S1,判断主开关是否接通且起动开关是否接通。主开关和起动开关设置在操作盘12上。如果步骤S1是肯定的,则在起动模式下进行动作。首先在步骤S2,开关35、36被切换到发动机起动时的位置(图5A)。如果开关35、36被切换到发动机起动时的位置,则在步骤S3~S5使发电机G作为发动机E的起动机而被驱动。
首先,在步骤S3,进行无传感器的位置检测处理。发电机G在作为电动机进行动作时,通过不使用位置检测用传感器检测转子磁极位置的无传感器控制来驱动。即,在起动时,根据发电机G的各相的相对电流来推断转子磁极位置。例如,根据分别流入U相和W相的电流之比来推断磁极位置。转子旋转中也同样,继续转子的磁极位置检测。该起动方式作为“矢量控制”是公知的。通过设置检测转子磁极位置的磁传感器等,可以根据从起动时到运转中全部传感器检测信号进行控制。各相的电流通过分流器34来检测。
在步骤S4,把发动机的目标旋转速度ω设定成规定的转动曲轴速度。在步骤S5,按照根据上述发电机G的相位所判定的转子位置来控制开关电路28的FET,为了使发动机E按照转动曲轴速度旋转,向发电机G的U、V、W相的绕组提供电流。
在步骤S6,判断发动机E是否到达独立运转转速。发动机E的转速可根据发电机G的电流波形的周期来检测。如果发动机转速到达独立运转转速,则发动机E可独立运转,因而进入步骤S7,使开关电路28的FET281~286全部断开。在步骤S8,使开关35、36双方都处于断开位置(图5B)。
在发动机E开始独立运转后,转移到电池的充电模式,在步骤S9,开关35、36被切换到充电时的位置(图5C)。在步骤S10,判断有无除雪机1的行驶指示。如果在充电模式下,在运转中从操作部12输入行驶指示,则转移到行驶模式。在行驶模式下,在步骤S11,开关35、36被切换到图5D的位置,行驶用电动机25被驱动。行驶用电动机25的驱动顺序(步骤S12~S14)是使发电机G作为起动机来驱动时的驱动顺序,即与步骤S3~S5相同。但在步骤S13,发动机的目标旋转速度ω成为由除雪机1的行驶速度指示值所决定的转速。
在步骤S10是否定时,即在没有行驶指示时,进入步骤S15,使开关电路28的FET281~286全部断开,不进行向行驶用电动机25和发电机G的U、V、W各相绕组的通电。在步骤S16,使开关35、36双方都处于断开位置。
在步骤S17,判断主开关是否断开。在主开关断开之前,进入步骤S10,继续判断有无行驶指示。如果主开关断开,则结束处理。
当通过步骤S1的判断而判断为主开关未接通时,在步骤S18,使开关35、36双方都处于断开位置,并停止全部处理。
如上所述,在本实施方式中,使起动机兼用的发电机G和行驶用电动机25,可共用驱动电路10。由于起动机可发挥作为发电机G的功能,因而开关35、36也能切换到调整器31侧。然而,本发明不限于使兼用起动机的发电机和动力用电动机来共用驱动电路,在使独立于发电机而设置的起动机和另一电动机来兼用驱动电路的情况下也能适用。
另外,驱动电路10,作为还将调整器31和开关35、36也做成一体化的驱动电路单元,也能够实现小型化。
本发明不限于除雪机用,可作为割草机和耕耘机等的,具有发动机驱动发电机和依靠该发电机的电力来驱动的行驶用等的动力用电动机和发动机的起动机的作业机的混合式驱动装置而广泛应用。
从以上说明可知,根据本发明,由于可使起动机和动力用电动机来共用驱动电路,因而实现电路结构的简化。并且,通过做成单一驱动电路,使驱动装置整体的可靠性提高。
根据本发明,作为无刷电动机的动力用电动机和起动机全都仅通过调节逆变器电路的动作控制量来适当控制。根据本发明,通过使起动机和发电机兼用,实现结构的简化。
根据本发明,使用发电机的输出电力给电池充电。根据本发明,由于在发电机进行动作时驱动动力用电动机,因而可防止仅依靠电池电力来驱动动力用电动机。
根据本发明,作业机由发动机等速驱动,可通过调整作业机的行驶速度来维持发动机的适量的负荷。
Claims (9)
1.一种混合式驱动装置,该混合式驱动装置具有:由发动机驱动的发电机,由该发电机充电的电池,动力用电动机以及上述发动机的起动机,其特征在于,具有:
驱动电路,依靠从上述发电机和上述电池提供的电力来驱动上述动力用电动机;以及
切换单元,在发动机起动时使上述驱动电路与上述起动机连接。
2.根据权利要求1所述的混合式驱动装置,其特征在于,上述动力用电动机和上述起动机是具有磁铁转子和三相定子绕组的无刷电动机;
上述驱动电路至少具有逆变器电路。
3.根据权利要求1所述的混合式驱动装置,其特征在于,上述发电机是具有作为上述起动机的功能的电动机兼用发电机。
4.根据权利要求2所述的混合式驱动装置,其特征在于,上述发电机是具有作为上述起动机的功能的电动机兼用发电机。
5.根据权利要求3所述的混合式驱动装置,其特征在于,具有把上述发电机的输出电力调整成电池充电用的电力的调整器;
上述切换单元构成为,在发动机独立运转后使上述发电机与上述驱动电路切断并与上述调整器连接。
6.根据权利要求4所述的混合式驱动装置,其特征在于,具有把上述发电机的输出电力调整成电池充电用的电力的调整器;
上述切换单元构成为,在发动机独立运转后使上述发电机与上述驱动电路切断并与上述调整器连接。
7.根据权利要求5所述的混合式驱动装置,其特征在于,将与发电机断开的上述驱动电路与上述动力用电动机连接。
8.根据权利要求6所述的混合式驱动装置,其特征在于,将与发电机断开的上述驱动电路与上述动力用电动机连接。
9.根据权利要求1所述的混合式驱动装置,其特征在于,使上述发动机进行维持等速的运转并驱动作业机;
构成由上述动力用电动机驱动上述作业机行驶。
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JP3257480B2 (ja) * | 1997-10-09 | 2002-02-18 | トヨタ自動車株式会社 | 内燃機関の始動装置および始動方法 |
DE19745094A1 (de) * | 1997-10-11 | 1999-04-15 | Elektrische Automatisierungs U | Steuerung für Elektrohybridfahrzeug |
JP4081855B2 (ja) * | 1998-05-14 | 2008-04-30 | 日産自動車株式会社 | 電池の昇温装置 |
JP3409701B2 (ja) * | 1998-07-03 | 2003-05-26 | 日産自動車株式会社 | ハイブリッド車両の制御装置 |
JP3449226B2 (ja) * | 1998-07-03 | 2003-09-22 | 日産自動車株式会社 | ハイブリッド車両のバッテリー制御装置 |
US6209672B1 (en) * | 1998-09-14 | 2001-04-03 | Paice Corporation | Hybrid vehicle |
US6554088B2 (en) * | 1998-09-14 | 2003-04-29 | Paice Corporation | Hybrid vehicles |
JP2001161114A (ja) | 1999-12-15 | 2001-06-19 | Yanmar Agricult Equip Co Ltd | 乗用農作業機 |
JP3615445B2 (ja) * | 2000-01-31 | 2005-02-02 | 三洋電機株式会社 | ハイブリッドカーの電源装置 |
JP2002223594A (ja) | 2001-01-26 | 2002-08-09 | Sawafuji Electric Co Ltd | 電動機兼発電機の制御装置 |
-
2003
- 2003-05-16 JP JP2003138592A patent/JP2004340055A/ja active Pending
-
2004
- 2004-04-26 US US10/831,181 patent/US6958549B2/en not_active Expired - Fee Related
- 2004-05-14 CN CNB2004100381870A patent/CN100355599C/zh not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102213174A (zh) * | 2010-04-12 | 2011-10-12 | 利勃海尔比伯拉赫有限公司 | 带有电驱动系统的自行式作业机及其驱动方法 |
CN102213174B (zh) * | 2010-04-12 | 2016-03-30 | 利勃海尔传动部件比伯拉赫有限公司 | 带有电驱动系统的自行式作业机及其驱动方法 |
CN103384747A (zh) * | 2011-03-01 | 2013-11-06 | 日立建机株式会社 | 混合动力式工程机械 |
CN103384747B (zh) * | 2011-03-01 | 2016-05-18 | 日立建机株式会社 | 混合动力式工程机械 |
CN104118331A (zh) * | 2013-04-28 | 2014-10-29 | 西门子公司 | 混合动力汽车电机驱动电路 |
CN104118331B (zh) * | 2013-04-28 | 2016-08-10 | 西门子公司 | 混合动力汽车电机驱动电路 |
CN106103850A (zh) * | 2014-07-28 | 2016-11-09 | 日立建机株式会社 | 混合动力式作业机 |
CN106103850B (zh) * | 2014-07-28 | 2018-01-16 | 日立建机株式会社 | 混合动力式作业机 |
CN104652338A (zh) * | 2015-02-03 | 2015-05-27 | 浙江亚特电器有限公司 | 混合动力驱动扫雪机 |
Also Published As
Publication number | Publication date |
---|---|
US20040227348A1 (en) | 2004-11-18 |
US6958549B2 (en) | 2005-10-25 |
JP2004340055A (ja) | 2004-12-02 |
CN100355599C (zh) | 2007-12-19 |
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