CN103781652B - 具有再生制动力分配控制功能的电驱动式多功能运载车辆及其再生制动力分配控制方法 - Google Patents
具有再生制动力分配控制功能的电驱动式多功能运载车辆及其再生制动力分配控制方法 Download PDFInfo
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Abstract
本发明中公开了一种具有再生制动力分配控制功能的电驱动式多功能运载车辆及其电驱动式多功能运载车辆的再生制动力分配控制方法。根据本发明一个方面的多功能运载车辆,其为一种以电能为动力源,从而驱动发动机移动的多功能运载车辆,其包括:控制器,其用于发动机的输出及再生的控制;再生感应装置,其对发动机在驱动过程中的再生制动的状态进行感应;电力测量仪,其用于测量再生制动状态下所发生的再生电力量;动力切换装置,其根据路面条件自动将行使模式从两轮切换为四轮、从四轮切换为两轮。本发明的构成的要点为:行使中,通过所述再生感应装置,感应到再生制动时,将通过所述控制器的控制,运行动力切换装置,从而可以切换为四轮行使模式。
Description
技术领域
本发明涉及一种电驱动式多功能运载车辆,具体地涉及具有再生制动力分配控制功能的电驱动式多功能运载车辆以及其再生制动力分配控制方法,其用于当行驶过程中发生再生制动时,将此再生制动力均匀地分散传递至所有车轮。
背景技术
近来,多功能运载车辆(Utility vehicle,UTV)在流通、建设、休闲(Leisure)、农用等多种领域被广泛利用。尤其,所述多功能运载车辆具有对于在险路上行驶有利的结构,因此,其主要作为运输工具用于在建筑工地或者农业施工现场,装载搬运泥土、作物或者装载搬运各种作业所需的工具。
近来,正在开发不同于现有的安装有机械引擎的多功能运载车辆、而是使用电驱动方式的多功能运载车辆,其不产生任何尾气且因噪音极少,从而可实现环保。电驱动式基本上由用于产生驱动力的发动机、作为能源的电池、用于控制发动机和电池的各种控制部件,以及此外的周边部件组成。
所述的电动车辆根据发动机的输出调节改变行驶速度,所述的发动机的输出调节则比照加速踏板的操作位移而变化,并且在行驶途中为进行制动而从加速踏板挪开脚的瞬间,发动机会因为行驶中的车辆的动能而被旋转。此时,发动机因为车辆的动能而发生旋转时,将产生的反电动势储存为可使用的能量的情况称之为再生,并且将此时产生的阻力利用为制动力称之为再生制动。
但是,将所述再生过程中产生的阻力利用为制动力时,在车辆制动过程中,驱动轮(前轮驱动车辆的前轮,后轮驱动车辆的后轮)和从动轮之间必然会发生制动力偏差。换句话说,车辆制动时,不同于与发动机直联的驱动轮上有机械制动力和再生制动力同时起作用,所述的从动轮上仅有机械制动力起作用。
当车轮发生制动力偏差,车辆在制动时会发生颠簸或者发生车辆不由自主地向一侧侧滑的偏制动等情况,从而降低了整体的制动稳定性及乘车感。为了克服所述的制动力偏差,通过在驱动轮和从动轮上分别设置不同的控制系统,从而弥补制动力差,但是, 当适用控制系统时,问题在于制动装置构成变得过于复杂并且单价上涨。
发明内容
本发明所要解决的课题在于提供一种具有再生制动力分配控制功能的电驱动式多功能运载车辆以及再其生制动力分配控制方法,其在不适用于复杂的控制系统的情况下,也能克服再生制动时驱动轮和从动轮之间的制动力差异,所述复杂的控制系统用于补偿制动力。
作为用于解决课题的技术解决方案,本发明提供具有再生制动力分配控制功能的电驱动式多功能运载车辆,本发明为一种以电能为动力源从而驱动发动机实现移动的多功能运载车辆,其包括:控制器(controller),其用于控制发动机的输出及再生;再生感应装置,其对发动机驱动过程中的再生制动状态进行感应;电力测量仪,其用于测量再生制动状态下所发生的再生电力量;动力切换装置,其根据路面条件自动将行使模式从两轮切换为四轮、从四轮切换为两轮。行使中,通过所述再生感应装置,感应到再生制动时,将通过所述控制器的控制,运行动力切换装置,从而切换为四轮行使模式。
在本实施例中,所述的再生感应装置可以是反电动势继电器(counterelectromotive force relay),所述的反电动势继电器通过再生制动时发生的发动机的反电动势(induced electromotive force,感应电动势)运行。
并且,所述动力切换装置可以是如下构成,包括:输入轴,其可传动地连接于发动机输出轴;后轮驱动轴,其可传动地连接于所述输入轴;中间轴,其可传动地连接于所述后轮驱动轴并正常旋转;切换离合器(clutch),其位于所述中间轴上;前轮驱动轴,其以所述切换离合器为媒介,选择性地可动力连接地与所述中间轴连接;以及壳体,其提供可以保护所述各个部件的密闭空间。
在此,所述结构可以是同步齿合式变速器的结构,其通过利用操作杆的手动操作以及受控制器控制的切换发动机,自动进行动力连接和切断。
作为解决课题的另外一种方法,本发明提供电驱动式多功能运载车辆的再生制动力分配控制方法,其包括如下步骤:(a)行驶中对当前的行驶模式进行判断;(b)行驶中感应再生制动;(c)行驶中感应到再生制动,当当前的行驶模式为两轮行驶模式时,通过控制器对动力切换装置的控制,切换为四轮行驶模式。
此时,在所述的感应再生制动的步骤中,可利用再生制动时发生的发动机的反电动 势(induced electromotive force,感应电动势)进行感应。
根据本发明的实施例,行驶中发生再生制动时,随着将行驶模式切换为四轮行驶模式,所述再生制动力可以均匀地分散传递至前轮和后轮。由此,即使不应用现有的复杂的控制系统,再生制动时也可实现车辆克服驱动轮和从动轮之间的制动力差异,所述现有的复杂的控制系统用于补偿制动力,并且由于去除了复杂的控制系统,也使得制造单价下降,因此对于经济性方面具有有利的效果。
附图说明
图1是根据本发明实施例的具有再生制动力分配控制功能的电驱动式多功能运载车辆的立体图;
图2是概略地表示图1中出现的多功能运载车辆的整体构成的平面概略图;
图3是概略地表示根据本发明的电驱动式多功能运载车辆的主要构成的框架结构图;
图4是更为详细地表示图2所示的动力切换装置构成的放大截面图;
图5是用于体现再生制动力分配控制功能的控制逻辑图。
具体实施方式
以下,参照附图对本发明的优选实施例进行详细说明。在对本发明进行说明时,对于公知的构成的具体说明将予以省略,此外,对有可能造成混淆本发明主旨的构成,也将省略对其的详细说明。
图1是根据本发明实施例的具有再生制动力分配控制功能的电驱动式多功能运载车辆的立体图;图2是概略地表示图1中出现的多功能运载车辆整体构成的平面概略图。此外,图3是概略地表示根据本发明的电驱动式多功能运载车辆主要构成的框架结构图。
参照图1至图3,根据本发明实施例的电驱动式多功能运载车辆,其包括:发动机3,其以电能为动力源输出用于车辆行驶的动力,所述的电能由电池组(Battery Pack)提供;动力切换装置9,其可实现两轮行驶模式与四轮行驶模式的选择性切换,从而使所述发动机3中输出的动力,根据路面条件传递至前轮(FW)或者后轮(RW)中的某一侧,或者传递至所有的前轮(FW)和后轮(RW)中。
前轮驱动轴92b和后轮驱动轴92a从动力切换装置9分别延伸至车辆前方和后方。因此,从发动机3输出且通过各个驱动轴所传递的动力,经过车辆前方和后方的前方差动装置12和后方差动装置14,传递至左右成双的前轮(FW)和后轮(RW)中。
发动机3由控制器2的控制对其输出进行调节,所述的控制器2根据加速踏板1的操作位移进行控制,并且控制器2不仅调节发动机3的输出,还参与将动能重新再生为电能的再生控制。
前轮(FW)和后轮(RW)之间形成有驾驶座空间5,所述驾驶座空间5可使驾驶人员及同乘人员乘坐,并可实现用于驾驶的车辆操作,所述驾驶座空间5内配备有用于乘座的坐席6。并且,驾驶座空间5的前方,换句话说,在仪表盘面板上具有用于转向的转向装置(Steering)(标号省略),同时配置有各种操作装置,并且在所述座位6的下方形成可搭载电池组4的空间,所述电池组4蓄有电能。
动力切换装置9为了在行驶途中进行制动,在从加速踏板1上挪开脚并开始再生制动的瞬间起,便根据所述控制器2的控制进行用于切换至四轮行驶模式的操作,并且可通过再生感应装置7感应到行驶过程中的再生制动的状态。在再生制动过程中,发动机3里产生反电动势(induced electromotive force,感应电动势)。由此,作为所述再生感应装置7,可采用反电动势继电器,以便通过反电动势感应感应到处于再生制动的状态。
图1中未说明的标号10是用于装载货物的装载箱,并且图3中未说明的标号8是指电力测量仪,其具有如下构成:测量再生制动状态下所产生的再生电力量,并且将测得的数值以模拟或数字数值进行表示。
图4是更为详细地表示图2所示的动力切换装置构成的放大截面图。
参照图4,动力切换装置9包括:输入轴(input shaft)90,其可传动地连接至发动机3的输出轴上;以及后轮驱动轴92a,其可传动地连接至所述输入轴90上。在后轮驱动轴92a上,连接有中间轴94,其以皮带(belt)99等为媒介可传动地进行连接,从而正常旋转,并且中间轴94上包括有切换离合器96。
切换离合器96既可以通过操作杆实现手动操作,又当从所述再生感应装置7感应到再生状态时,成为一种同步齿合式变速器,其构成为:根据切换发动机(省略示图)的驱动,可自动实现动力连接或切断,所述的切换发动机驱动根据所述控制器2的命令受控制,并且以所述的切换离合器96为媒介,前轮驱动轴92b与所述中间轴94进行连接,从而可以实现选择性地连接动力。
附图标号98表示提供密闭空间的壳体,所述密闭空间保护各个部件。
对于通过所述的电驱动式多功能运载车辆进行的再生制动力分配过程,将结合根据本发明另一方面的再生制动力分配控制方法进行简单说明。
图5是用于表示再生制动力分配控制功能的控制逻辑图,同时参照前述附图进行说明。
脚踩加速踏板1时,发动机3的输出将比照所述操作位移得到调节,由此决定了行驶速度。以脚踩加速踏板1的状态行驶时,控制器2便会判断并辨识行驶中的车辆当前的行驶模式是两轮还是四轮模式。
在所述状态下,为了采取制动而从加速踏板1挪开脚的瞬间便发生再生制动,并且通过再生感应装置7感应到是处于再生状态。而且,所述信息将提供至所述控制器2。
接下来,当行驶过程中感应到再生制动,并且控制器2所识别的当前车辆行驶模式为两轮行驶模式时,所述控制器2将立刻输出用于动力切换装置9进行切换的命令。
根据由控制器输出的切换命令,动力切换装置9进行运转,从而处于两轮模式的行驶模式将切换为四轮行驶模式。如所述,伴随再生制动力发生的同时切换为四轮行驶模式的情况下,再生制动力将均匀地传递到所有车轮中,因此制动安全性可得到保证。
根据前述说明的本发明的实施例,行驶中发生再生制动时,可转换为四轮行驶模式,并且所述的再生制动力可均匀地分散传递至前轮和后轮。由此,即便不应用现有的复杂的控制系统,也能够实现车辆在发生再生制动时克服驱动轮和从动轮之间的制动力差,所述的现有的复杂的控制系统用于补偿制动力,并且由于去除了复杂的控制系统,也使得制造单价下降,从而在经济性方面也具有有利的效果。
在以上本发明的详细说明中,只针对根据本发明的特殊实施例作了阐述。但是,本发明并不只限定于详细说明中提及的特别的形式,并且应该理解根据所附权利要求范围所定义的属于本发明的精神和范围内的所有变形物、均等物及替代物均包含在本发明中。
标号说明
1:加速踏板 2:控制器
3:发动机 4:电池组
5:驾驶座空间 6:坐席
7:再生感应装置 8:电力测量仪
9:动力切换装置 10:装载箱
11:前方差动装置 12:后方差动装置
90:输入轴 92a:后轮驱动轴
92b:前轮驱动轴 94:中间轴
96:切换离合器 98:壳体
FW:前轮 RW:后轮
Claims (5)
1.一种具有再生制动力分配控制功能的电驱动式多功能运载车辆,其特征在于,是一种以电能作为动力源驱动发动机移动的多功能运载车辆,其包括:
控制器,其用于控制发动机的输出及再生;
再生感应装置,其对发动机在驱动过程中的再生制动的状态进行感应;
电力测量仪,其用于测量再生制动状态下所发生的再生电力量;
动力切换装置,其根据路面条件自动将行使模式从两轮切换为四轮、从四轮切换为两轮,
行使中,通过所述再生感应装置感应到再生制动,并且当前行驶模式为两轮行驶模式时,通过所述控制器的控制,运行动力切换装置,从而切换为四轮行使模式;
所述的再生感应装置是反电动势继电器,所述的反电动势继电器通过再生制动时产生的发动机的反电动势运行。
2.根据权利要求1所述的具有再生制动力分配控制功能的电驱动式多功能运载车辆,其特征在于,所述动力切换装置包括:
输入轴,其可传动地连接于发动机输出轴;
后轮驱动轴,其可传动地连接于所述输入轴;
中间轴,其可传动地连接于所述后轮驱动轴并正常旋转;
切换离合器,其位于所述中间轴上;
前轮驱动轴,其以所述切换离合器为媒介,选择性地可连接动力地与所述中间轴连接;以及
壳体,其提供可以保护各个配件的密闭空间。
3.根据权利要求2所述的具有再生制动力分配控制功能的电驱动式多功能运载车辆,其特征在于:
所述切换离合器的结构是同步齿合式变速器的结构,其通过利用操作杆的手动操作以及受控制器控制的切换发动机,自动实行动力连接和切断。
4.一种电驱动式多功能运载车辆的再生制动力分配控制方法,其特征在于,包括如下步骤:
(a)行驶中对当前的行驶模式进行判断;
(b)行驶中感应再生制动;
(c)行驶中感应到再生制动,当当前的行驶模式为两轮行驶模式时,通过控制器对动力切换装置的控制,切换为四轮行驶模式。
5.根据权利要求4所述的电驱动式多功能运载车辆的再生制动力分配控制方法,其特征在于:
在所述的感应再生制动的步骤中,可利用再生制动时发生的发动机的反电动势进行感应。
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PCT/KR2012/011280 WO2013095050A1 (ko) | 2011-12-23 | 2012-12-21 | 회생제동력 배분 제어 기능을 갖는 전기구동식 다목적 운반차량 및 그 회생제동력 배분 제어방법 |
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US10850735B2 (en) | 2017-04-11 | 2020-12-01 | Dana Heavy Vehicle Systems Group, Llc | Axle range shift-assist for auxiliary braking |
CN107234984B (zh) * | 2017-06-14 | 2023-12-19 | 江苏林海动力机械集团有限公司 | 一种电动车四轮驱动自动切换系统 |
CN109515200A (zh) * | 2018-11-30 | 2019-03-26 | 北京新能源汽车股份有限公司 | 车辆及单踏板电动汽车的再生制动控制方法和装置 |
CN112009261B (zh) * | 2019-05-30 | 2022-06-03 | 上海汽车变速器有限公司 | 基于ev前后驱智能协调驱动系统的控制方法 |
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