CN105383291B - 用于电动车辆的滑行开关 - Google Patents
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- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
一种控制电动车辆的示例方法包括激活滑行开关以将电动车辆置于滑行模式中。
Description
技术领域
本发明涉及滑行电动车辆以尤其是增加燃料经济性。
背景技术
通常,电动车辆不同于常规机动车辆,因为电动车辆使用一个或多个电池提供动力的电机来选择性地驱动。相比之下,常规机动车辆仅依赖内燃发动机来驱动车辆。电动车辆可以使用电机代替内燃发动机或者除了内燃发动机之外可以使用电机。
示例电动车辆包括混合动力电动车辆(HEV),插电式混合动力电动车辆(PHEV),燃料电池车辆,以及电池电动车辆(BEV)。电动车辆的动力传动系统通常配备有电池组,电池组具有存储用于给电机提供动力的电能的电池单元。电池单元可以在使用之前进行充电。电池单元可以经由再生制动或内燃发动机在驱动期间进行再充电。
再生制动和摩擦制动可以降低电动车辆的燃料经济性。
发明内容
根据本发明的示例性方面,一种控制电动车辆的方法除了其他方面之外包括激活滑行开关以将电动车辆置于滑行模式中。
在前述方法的进一步非限制性实施例中,该方法包括在激活过程中保持挡位选择器处于驱动模式。
在前述方法的任一进一步非限制性实施例中,挡位选择器可以在至少驱动模式、空挡模式和倒车模式之间驱动。
在前述方法的任一进一步非限制性实施例中,滑行开关与电动车辆的挡位选择器是分开的。
在前述方法的任一进一步非限制性实施例中,激活滑行开关包含将滑行开关从第一位置移动到第二位置。
在前述方法的任一进一步非限制性实施例中,第二位置是下压位置且第一位置是释放位置。
在前述方法的任一进一步非限制性实施例中,滑行开关被偏置到第一位置,并且用户保持滑行开关处于第二位置以克服偏置并保持电动车辆处于滑行模式中。
在前述方法的任一进一步非限制性实施例中,停用滑行开关包含将滑行开关从第二位置移动到第一位置。
在前述方法的任一进一步非限制性实施例中,该方法包括在不施加制动的情况下激活与电动车辆的挡位选择器分开的滑行开关。
在前述方法的任一进一步非限制性实施例中,该方法包括响应于激活滑行模式而分离功率分流动力传动系统的齿轮。
根据本发明的示例性方面,一种电动车辆除了其他方面之外包括挡位选择器和与挡位选择器分开的滑行开关。滑行开关被激活以将电动车辆选择性地置于滑行模式中。
根据前述电动车辆的进一步非限制性实施例,挡位选择器可以在至少驱动模式、空挡模式和倒车模式之间驱动。
根据前述电动车辆的任一进一步非限制性实施例,滑行开关当挡位选择器处于驱动模式时激活以将电动车辆选择性地置于滑行模式中。
根据前述电动车辆的任一进一步非限制性实施例,滑行开关包含设置在换挡杆手柄上的按钮。
根据前述电动车辆的任一进一步非限制性实施例,滑行开关包含设置在电动车辆的方向盘上的按钮。
根据前述电动车辆的任一进一步非限制性实施例,滑行开关是通过将滑行开关从第一位置移动到第二位置来激活。
根据前述电动车辆的任一进一步非限制性实施例,第二位置是下压位置且第一位置是释放位置。
根据前述电动车辆的任一进一步非限制性实施例,滑行开关被偏置到第一位置,并且用户保持滑行开关处于第二位置以克服偏置并保持电动车辆处于滑行模式中。
根据前述电动车辆的任一进一步非限制性实施例,停用滑行开关包含将滑行开关从第二位置移动到第一位置。
前述段落、权利要求或以下说明书和附图中的实施例、示例和可选方案,包括它们的各个方面或各自的个体特征,可以独立地或以任意组合的形式获得。关于一个实施例所描述的特征适用于所有的实施例,除非这些特征互不相容。
附图说明
从具体实施方式中,所公开的示例的各种特征和优点对本领域技术人员来说将是显而易见的。伴随着具体实施方式的附图简要描述如下:
图1示意性地示出了示例电动车辆的动力传动系统;
图2示出了具有图1的动力传动系统的示例电动车辆的高度示意图;
图3示出了在图2的电动车辆中使用的示例挡位选择器的透视图。
具体实施方式
本发明涉及最大化电动车辆中的燃料经济性。一些电动车辆使用积极的再生制动。再生制动以比允许电动车辆滑行到停止更快的速度减慢电动车辆。然而,滑行,而不是施加再生制动,可以避免与移动能量至电动车辆的电池以及从电动车辆的电池移动能量相关的损失。本发明提供一种用于将电动车辆移动到滑行模式的系统。
图1示意性地示出了用于电动车辆的动力传动系统10。虽然被描述为混合动力电动车辆(HEV),但是应当理解的是,在此所描述的概念不限于HEV并且可以延伸至其它电动车辆,包括但不限于插电式混合动力电动车辆(PHEV)、燃料电池车辆以及电池电动车辆(BEV)。
在一个实施例中,动力传动系统10是使用第一驱动系统和第二驱动系统的功率分流动力传动系统。第一驱动系统包括发动机14和发电机18(即第一电机)的组合。第二驱动系统至少包括马达22(即第二电机)、发电机18和电池组24。在这个示例中,第二驱动系统被认为是动力传动系统10的电驱动系统。第一和第二驱动系统产生扭矩以驱动电动车辆的一组或多组车辆驱动轮28。
发动机14——在本示例中是内燃发动机——和发电机18可以通过动力传输单元30——例如行星齿轮组——连接。当然,其它类型的动力传输单元,包括其它齿轮组和变速器,可以用于连接发动机14至发电机18。在一个非限制性实施例中,动力传输单元30是包括环形齿轮32、中心齿轮34和行星齿轮架总成36的行星齿轮组。
发电机18可以由发动机14通过动力传输单元30来驱动以转变动能为电能。作为选择,发电机18可以用作马达以转变电能为动能,从而输出扭矩至连接到动力传输单元30的轴38。因为发电机18可操作地连接到发动机14,所以发动机14的速度可以由发电机18来控制。
动力传输单元30的环形齿轮32可以连接至轴40,轴40通过第二动力传输单元44连接至车辆驱动轮28。第二动力传输单元44可以包括具有多个齿轮46的齿轮组。其它动力传输单元也可以是适合的。齿轮46从发动机14传递扭矩至差速器48以最终提供牵引力至车辆驱动轮28。差速器48可以包括能够传递扭矩至车辆驱动轮28的多个齿轮。在本实施例中,第二动力传输单元44通过差速器48机械地连接至车桥50以分配扭矩至车辆驱动轮28。
马达22(即,第二电机)也可以用于通过输出扭矩至也连接至第二动力传输单元44的轴52来驱动车辆驱动轮28。在一个实施例中,马达22和发电机18配合作为再生制动系统的一部分,在再生制动系统中,马达22和发电机18二者都可以用作马达以输出扭矩。例如,马达22和发电机18可以各自输出电力至电池组24。
电池组24是电动车辆电池总成的示例类型。电池组24可以具有能够输出电力以操作马达22和发电机18的高压电池的形式。其它类型的储能设备和/或输出设备也可以用于具有动力传动系统10的电动车辆。
示例动力传动系统10包括离合器54,可以驱动离合器54以在接合位置和分离位置之间移动动力传输单元44的齿轮46或其它部分。在接合位置,第一驱动系统、第二驱动系统或者两者可以传递扭矩到差速器48。在分离位置(用虚线示出),第一和第二驱动系统不能传递扭矩至差速器48。当离合器54将动力传输单元44置于分离位置时,动力传动系统10处于滑行模式。
示例动力传动系统10响应来自加速器踏板56和制动踏板58的输入。当动力传动系统10不处于滑行模式时,压下加速器踏板56使动力传动系统10加速车辆驱动轮28。抬高加速器踏板56减速车辆驱动轮28。在一些电动车辆中,抬起加速器踏板56可以发起再生制动。再生制动产生用于电池组24的电力。然而,可以导致与移动电力至电池组24和从电池组24移动电力相关的损失。
压下制动踏板58减速车辆驱动轮28。相对轻压制动踏板58可以发起再生制动以减速车辆驱动轮28。牢牢地压下制动踏板58可以用摩擦制动减速车辆驱动轮28。摩擦制动除其他方面之外由于相关的摩擦造成损失。
当加速器踏板56和制动踏板58都没有压下时,一些电动车辆可以自由滑行而没有再生制动。
其他电动车辆,例如具有动力传动系统10的电动车辆,当加速器踏板56和制动踏板58都没有压下时可以发起再生制动。再生制动和与此相关的损失将继续,除非动力传动系统10进入离合器54分离动力传输单元44的滑行模式。
现在参照图2和图3,并继续参照图1,示例电动车辆60包括动力传动系统10。电动车辆60包括挡位选择器64和滑行开关68。挡位选择器64可以在驻车模式(P)、倒车模式(R)、空挡模式(N)、驱动模式(D)和低速驱动模式(L)之间驱动。
当挡位选择器64处于驱动模式时,如图所示,如果动力传输单元44处于接合位置,车辆驱动轮28可以通过动力传动系统10来驱动。
当挡位选择器64位于空挡模式时,车辆驱动轮28如已知的那样自由移动。当电动车辆60正在移动时,不论动力传输单元44是接合或分离,挡位选择器64位于空挡模式允许电动车辆60滑行。
在过去,当电动车辆60正在移动时,电动车辆60的操作者可以已将挡位选择器64从驱动模式移动到空挡模式。该运动导致电动车辆60滑行以及从而避免与再生制动或摩擦制动相关的损失。如可以领会的是,驱动挡位选择器64从驱动模式到空挡模式,然后返回到驱动模式以退出滑行,会很累赘。
滑行开关68与挡位选择器64是分开的。激活滑行开关68通过引起离合器54移动动力传输单元44到分离位置来将电动车辆60置于滑行模式。当处于滑行模式时,电动车辆60可以滑行。值得注意的是,当滑行开关68被激活时,挡位选择器64可以停留在驱动模式。因此,滑行开关68独立于挡位选择器64进行操作,并因此被认为是与挡位选择器64分开。
在本示例中,滑行开关68是挡位选择器手柄72上的按钮68b。按钮68b从第一位置到第二位置可移动。
在第一位置,按钮68b被释放并且没有被激活。按钮68b可以朝向第一位置偏置。
在第二位置,按钮68b被压下。在第二位置,按钮68b使离合器54移动动力传输单元44至分离位置,从而使动力传动系统10在滑行模式中操作。
保持按钮68b在第二位置维持了电动车辆60在滑行模式中的操作。压下按钮68b克服了朝向第一位置推动按钮68b的偏置力。
当电动车辆60被驱动时,当通过压下按钮68b来驱动时,电动车辆60的驾驶员可以使动力传动系统10进入滑行模式。压下按钮68b来滑行电动车辆60确保动力传动系统10将不会经历与再生制动相关的损失。
除了激活离合器54之外,压下按钮68b可以使动力传动系统10的电机关闭以在滑行模式中进一步节省电力。
在其它示例中,离合器54可以从动力传动系统10中移除。在这样的示例中,压下按钮68b来激活滑行模式导致动力传动系统10的电机(发电机18和马达22a)电关闭。在这样的示例中,压下按钮68b来激活滑行模式不会导致离合器的移动。
因此,进入滑行模式可以包含移动离合器54,停用一些或全部电机,或这些的某种组合。
当接近停车标志时,驾驶员可以压下按钮68b以使电动车辆60进入滑行模式并滑行而不是允许再生制动。在滑行模式期间,电动车辆60除其他方面以外由于与道路相关的摩擦损失减速。在滑行一会儿之后,驾驶者可以压下制动踏板58以使电动车辆60用摩擦制动来完全停止。值得注意的是,不论动力传输单元44是接合或分离,摩擦制动都操作。
然后,驾驶员释放按钮68b,且按钮68b返回到第一位置。离合器54移动动力传输单元44至接合位置。
虽然滑行开关68设置为位于挡位选择器手柄72上的按钮68b,但是,按钮68b与挡位选择器64可以是分开的,因为按钮68b可以独立于挡位选择器64移动。
示例挡位选择器64包括具有挡位选择器手柄72的变速杆。在另一个示例中,挡位选择器64是旋转以在驻车模式、倒车模式、空挡模式、驱动模式等之间移动的旋转换挡手柄。在这样的示例中,滑行开关68可以是位于旋转换挡手柄的顶部或面向外的表面上的按钮。
滑行开关68可以位于电动车辆60的其他区域上,包括,但不限于,仪表板或方向盘。如果滑行开关68位于方向盘上,滑行开关68可以具有拨片开关的形式。
在行驶期间,滑行开关68也可以是电动车辆60的操作者无法实际接触的。在这样的例子中,滑行开关68可以通过来自电动车辆60的操作者的听觉命令来激活。
电动车辆60可以包括通知操作者滑行模式接合的指示器78,例如组合仪表板内的灯。指示器可操作地连接到滑行开关68并且当滑行开关68处于第一位置时可以照亮。指示器78也可以是听觉警告,或听觉和视觉指示器的某种组合。
所公开的示例的特征包括电动车辆通过最大化再生制动或通过滑行为操作者提供提高燃料经济性的选择。这种双重方法允许操作者在交通拥挤时提高再生捕获,而无需制动踏板的驱动。相同的操作者能够利用滑行模式的优势,而无需挡位选择器的不合适的驱动。
前述说明本质上是示例性的,而不是限制性的。对于本领域技术人员来说,在不必脱离本发明的实质的情况下,所公开的示例的变化和修改可以变得显而易见。因此,给予本发明的法律保护范围仅能通过研究以下权利要求来确定。
Claims (10)
1.一种控制电动车辆的方法,包含:
激活滑行开关以将电动车辆置于阻止所述电动车辆的任何再生制动的滑行模式中,所述激活所述滑行开关包含将所述滑行开关从第一位置移动到第二位置,
其中所述滑行开关被偏置到所述第一位置,并且用户保持所述滑行开关处于所述第二位置以克服所述偏置并保持所述电动车辆处于所述滑行模式中。
2.根据权利要求1所述的方法,进一步包含:在所述激活过程中保持挡位选择器处于驱动模式。
3.根据权利要求2所述的方法,其中所述挡位选择器可以在至少驱动模式、空挡模式和倒车模式之间驱动。
4.根据权利要求1所述的方法,其中所述滑行开关与所述电动车辆的挡位选择器是分开的。
5.根据权利要求1所述的方法,进一步包含响应于激活所述滑行模式而将功率分流动力传动系统移动到分离位置来将所述电动车辆置于滑行模式。
6.根据权利要求1所述的方法,其中所述第二位置是下压位置且所述第一位置是释放位置。
7.根据权利要求5所述的方法,其中所述滑行开关独立于所述电动车辆的挡位选择器进行操作。
8.根据权利要求1所述的方法,其中停用所述滑行开关包含将所述滑行开关从所述第二位置移动到所述第一位置。
9.根据权利要求1所述的方法,进一步包含在不施加制动的情况下激活与所述电动车辆的挡位选择器分开的所述滑行开关。
10.根据权利要求5所述的方法,进一步包含响应于激活所述滑行模式而分离功率分流动力传动系统的齿轮。
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