CN114228472A - 一种混合动力车辆的驱动装置 - Google Patents
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- 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
- B60K6/22—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
- B60K6/38—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 driveline clutches
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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
- B60K6/24—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 combustion engines
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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
- B60K6/26—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 motors or the generators
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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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Abstract
本发明涉及混合动力车辆技术领域,尤其涉及一种混合动力车辆的驱动装置,驱动装置将来自发动机的动力传输至驱动轮的半轴,驱动装置还将来自电动机的动力传输至半轴,自电动机至半轴的动力传输路径中平行布置有电动机轴和电动机中间轴,电动机轴连接电动机的转子轴,电动机轴上设有电动机轴齿轮,电动机中间轴上设有电动机中间轴小齿轮、电动机中间轴大齿轮和断开组件,电动机中间轴小齿轮与差速器的差速器齿轮相啮合,差速器连接半轴,电动机中间轴大齿轮与电动机轴齿轮相啮合,断开组件连接或断开电动机中间轴大齿轮与电动机中间轴小齿轮间的动力传输。能够降低整车高速行驶时的电动机损耗,进一步降低了整车的油耗及电耗。
Description
技术领域
本发明涉及混合动力车辆技术领域,尤其涉及一种混合动力车辆的驱动装置。
背景技术
混合动力车辆配备有发动机和电动机作为驱动源,同时还配备有发电机。通常,混合动力车辆在整车高速行驶时由发动机驱动行驶,纯电动侧(电动机驱动侧)动力无法完全解耦,此时电动机由于本身外特性限制动力方面又无法发挥主导作用,电动机的高电耗会限制整车油耗或者电耗,而不让电动机工作的话又会因为电动机本身的反电动势造成逆变器系统设计成本过高。因此,降低整车高速行驶时的电动机损耗成为亟需解决的问题。
发明内容
本发明要解决的技术问题是提供一种混合动力车辆的驱动装置,能够降低整车高速行驶时的电动机损耗,以克服现有技术的上述缺陷。
为了解决上述技术问题,本发明采用如下技术方案:一种混合动力车辆的驱动装置,驱动装置将来自发动机的动力传输至驱动轮的半轴,驱动装置还将来自电动机的动力传输至半轴,自电动机至半轴的动力传输路径中平行布置有电动机轴和电动机中间轴,电动机轴连接电动机的转子轴,电动机轴上设有电动机轴齿轮,电动机中间轴上设有电动机中间轴小齿轮、电动机中间轴大齿轮和断开组件,电动机中间轴小齿轮与差速器的差速器齿轮相啮合,差速器连接半轴,电动机中间轴大齿轮与电动机轴齿轮相啮合,断开组件连接或断开电动机中间轴大齿轮与电动机中间轴小齿轮间的动力传输。
优选地,断开组件为液压驱动组件,自发动机至半轴的动力传输路径中布置有泵和离合器,离合器连接或断开来自发动机的动力,泵通过来自发动机的动力产生驱动压力并将驱动压力传输至离合器和断开组件。
优选地,电动机中间轴小齿轮固设于电动机中间轴上,电动机中间轴大齿轮可沿周向转动地设于电动机中间轴上,断开组件包括可沿轴向移动地设于电动机中间轴小齿轮与电动机中间轴大齿轮之间的主动压盘和沿轴向弹性顶压于电动机中间轴小齿轮与主动压盘之间的保持弹簧,主动压盘的两侧分别与电动机中间轴小齿轮和电动机中间轴大齿轮通过传递扭矩的花键配合连接,泵通过来自发动机的动力产生的驱动压力传输至主动压盘并驱动主动压盘朝电动机中间轴小齿轮移动。
优选地,电动机中间轴大齿轮与电动机中间轴小齿轮之间设有推力轴承,电动机中间轴大齿轮与电动机中间轴之间设有滚针轴承。
优选地,泵通过来自发动机的动力产生的驱动压力分别经第一高压管路和第二高压管路传输至断开组件和离合器。
优选地,离合器具有离合器轴,泵具有泵轴,泵轴与离合器轴沿水平方向间隔平行布置。
优选地,泵轴上设有泵轴齿轮,泵轴齿轮连接离合器,泵轴齿轮与发动机轴齿轮相啮合,发动机轴齿轮设于发动机轴上,发动机轴连接发动机的曲轴。
优选地,离合器包括设于离合器轴上的第一结合构件和与第一结合构件相对的第二结合构件,第二结合构件连接离合器轴大齿轮,离合器轴大齿轮与泵轴齿轮相啮合,离合器轴上设有离合器轴小齿轮,离合器轴小齿轮与差速器齿轮相啮合。
优选地,驱动装置还将来自发动机的动力传输至发电机,发电机的转子轴与半轴沿水平方向间隔平行设置。
优选地,自发动机至发电机的动力传输路径中平行布置有发动机轴和发电机轴,发动机轴连接发动机的曲轴,发动机轴上设有发动机轴齿轮,发电机轴连接发电机的转子轴,发电机轴上设有发电机轴齿轮,发电机轴齿轮与发动机轴齿轮相啮合。
与现有技术相比,本发明具有显著的进步:
本发明的驱动装置中,在电动机中间轴上设有断开组件,断开组件连接或断开电动机中间轴大齿轮与电动机中间轴小齿轮间的动力传输。在整车高速行驶时,由发动机驱动半轴转动而驱动整车高速行驶,差速器的差速器齿轮转动时带动电动机中间轴小齿轮随之转动,通过断开组件断开电动机中间轴大齿轮与电动机中间轴小齿轮间的动力传输,可使得电动机中间轴大齿轮与电动机中间轴小齿轮间的动力传输断开后,仅有电动机中间轴小齿轮随差速器转动,电动机中间轴大齿轮不再跟随差速器转动,从而电动机轴齿轮、电动机轴以及电动机的转子轴亦不再跟随差速器转动,因此节省了整车高速行驶时电动机中间轴大齿轮、电动机轴齿轮、电动机轴以及电动机的转子轴的旋转机械损耗和电动机损耗,进一步降低了整车的油耗及电耗,同时也能够降低逆变器系统耐压模块的选型要求。在需要电动机驱动半轴转动以驱动整车行驶时,通过断开组件连接电动机中间轴大齿轮与电动机中间轴小齿轮间的动力传输,可使得自电动机至半轴的动力传输路径正常工作,因此本发明的驱动装置中也能够支持整车运动模式下非解耦的动力需求,不会降低某些特殊应用场景的动力请求。
附图说明
图1是本发明实施例的混合动力车辆的驱动装置的结构示意图。
图2是本发明实施例的混合动力车辆的驱动装置中,断开组件的剖面示意图。
其中,附图标记说明如下:
1 驱动装置 11a 差速器齿轮
2 发动机 12 半轴
2a 发动机的曲轴 13 驱动轮
3 扭矩限制器 14 电动机中间轴
4 发动机轴 14a 电动机中间轴小齿轮
4a 发动机轴齿轮 14b 电动机中间轴大齿轮
5 发电机轴 14c 断开组件
5a 发电机轴齿轮 14c1 保持弹簧
6 泵 14c2 主动压盘
6a 第一高压管路 14c3 推力轴承
6b 第二高压管路 14c4 滚针轴承
7 离合器 14e 电动机中间轴左轴承
7a 第一结合构件 14f 电动机中间轴右轴承
7b 第二结合构件 14g 锁紧螺栓
8 发电机 15 电动机轴
8a 发电机的转子轴 15a 电动机轴齿轮
9 泵轴 16 电动机
9a 泵轴齿轮 16a 电动机的转子轴
10 离合器轴 17 壳体
10a 离合器轴小齿轮 17a 左壳体
10b 离合器轴大齿轮 17b 右壳体
11 差速器 17c 分型面
具体实施方式
下面结合附图对本发明的具体实施方式作进一步详细说明。这些实施方式仅用于说明本发明,而并非对本发明的限制。
在本发明的描述中,需要说明的是,术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
此外,在本发明的描述中,除非另有说明,“多个”的含义是两个或两个以上。
如图1和图2所示,本发明的混合动力车辆的驱动装置的一种实施例。在本发明的描述中,左侧是指图1纸面的左侧,右侧是指图1纸面的右侧,前侧是指图1纸面的上侧,后侧是指图1纸面的下侧,上侧是指图1纸面的纸外侧,下侧是指图1纸面的纸内侧,前后方向又称为水平方向,上下方向又称为竖直方向,左右方向又称为整车轴向。
参见图1,本实施例中的混合动力车辆配备有发动机2、电动机16和发电机8。本实施例的驱动装置1将来自发动机2的动力传输至驱动轮13的半轴12以驱动半轴12转动。半轴12受驱动而转动时带动驱动轮13转动,从而驱动整车行驶。本实施例的驱动装置1还将来自电动机16的动力传输至半轴12以驱动半轴12转动,电动机的转子轴16a与半轴12沿竖直方向间隔平行设置。优选地,本实施例的驱动装置1还将来自发动机2的动力传输至发电机8,发电机的转子轴8a与半轴12沿水平方向间隔平行设置。
其中,自电动机16至半轴12的动力传输路径中布置有电动机轴15和电动机中间轴14,电动机轴15和电动机中间轴14均与半轴12平行布置。电动机轴15连接电动机的转子轴16a,电动机轴15与电动机的转子轴16a同轴连接。电动机轴15上设有电动机轴齿轮15a,电动机中间轴14上设有电动机中间轴小齿轮14a和电动机中间轴大齿轮14b,电动机中间轴小齿轮14a与差速器11的差速器齿轮11a相啮合,差速器11连接半轴12,电动机中间轴大齿轮14b与电动机轴齿轮15a相啮合。由此,本实施例的驱动装置1将来自电动机16的动力传输至驱动轮13的半轴12的传输原理,亦即自电动机16至半轴12的动力传输路径的工作原理为:由电动机的转子轴16a的转动带动电动机轴15转动,电动机轴齿轮15a随之转动并带动电动机中间轴大齿轮14b转动,由电动机中间轴大齿轮14b的转动带动电动机中间轴14转动,电动机中间轴小齿轮14a随之转动并带动差速器齿轮11a转动,从而将来自电动机16的动力传输至差速器11并经差速器11传输至半轴12。
本实施例的驱动装置1中,在电动机中间轴14上还设有断开组件14c,断开组件14c连接或断开电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输。在整车高速行驶时,由发动机2驱动半轴12转动而驱动整车高速行驶,差速器11的差速器齿轮11a转动时带动电动机中间轴小齿轮14a随之转动,通过断开组件14c断开电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输,可使得电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输断开后,仅有电动机中间轴小齿轮14a随差速器11转动,电动机中间轴大齿轮14b不再跟随差速器11转动,从而电动机轴齿轮15a、电动机轴15以及电动机的转子轴16a亦不再跟随差速器11转动,因此节省了整车高速行驶时电动机中间轴大齿轮14b、电动机轴齿轮15a、电动机轴15以及电动机的转子轴16a的旋转机械损耗和电动机16损耗,进一步降低了整车的油耗及电耗,同时也能够降低逆变器系统耐压模块的选型要求。在需要电动机16驱动半轴12转动以驱动整车行驶时,通过断开组件14c连接电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输,可使得自电动机16至半轴12的动力传输路径正常工作,因此本实施例的驱动装置1中也能够支持整车运动模式下非解耦的动力需求,不会降低某些特殊应用场景的动力请求。
本实施例中,优选地,断开组件14c为液压驱动组件。本实施例的驱动装置1中,自发动机2至半轴12的动力传输路径中布置有泵6和离合器7。离合器7连接或断开来自发动机2的动力,以实现来自发动机2的动力向半轴12的传输或断开。泵6通过来自发动机2的动力产生驱动压力并将驱动压力传输至离合器7和断开组件14c,离合器7可以根据来自泵6的驱动压力呈连接或断开状态,断开组件14c可以根据来自泵6的驱动压力使电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输呈连接或断开状态。较佳地,泵6通过来自发动机2的动力产生的驱动压力可以经第一高压管路6a传输至断开组件14c,泵6通过来自发动机2的动力产生的驱动压力可以经第二高压管路6b传输至离合器7。
相较现有技术中将泵与离合器的转动轴同轴地布置在驱动桥单元的一侧上,且泵利用来自半轴的动力为离合器产生驱动压力,本实施例的驱动装置1将泵6和离合器7均布置在自发动机2至半轴12的动力传输路径中,使得泵6可以布置在驱动装置1的壳体17沿整车轴向的长度Ld范围内,即泵6可以收容在驱动装置1的壳体17之内,因此无需在整车轴向上于驱动装置1的壳体17外侧增加泵6的布置空间,能够有效减少驱动装置1整体在整车轴向上所占的布置空间,更好地满足整车的布置要求;同时,本实施例的驱动装置1中的泵6通过来自发动机2的动力为离合器7产生驱动压力,在整车纯电动行驶(仅由电动机的转子轴16a转动驱动半轴12转动)时,泵6不会再跟随电动机的转子轴16a的转动而继续转动,而在整车低速行驶或者爬坡时,整车控制系统可以通过主动控制发动机2的转速来调节泵6接受到的来自发动机2的动力,从而调节泵6依靠此动力产生的驱动压力,使其满足离合器7结合所需的驱动压力,因此可以使发动机2的动力更快地耦合并且传递至半轴12,提高整车的动力性能和效率。与此同时,本实施例的驱动装置1中的断开组件14c采用液压驱动组件并由泵6通过来自发动机2的动力产生的驱动压力驱动使电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输呈连接或断开状态,实现了在不增加驱动装置1整体在整车轴向上所占的布置空间的情况下,通过最小的成本实现降低整车高速行驶时的电动机16损耗。
优选地,参见图2,本实施例中,电动机中间轴14的左右两端分别支承在电动机中间轴左轴承14e和电动机中间轴右轴承14f上,电动机中间轴14的左端设有锁紧螺栓14g。电动机中间轴小齿轮14a固设于电动机中间轴14上,电动机中间轴小齿轮14a与电动机中间轴14可以设计成整体件。电动机中间轴大齿轮14b可沿周向转动地设于电动机中间轴14上,较佳地,可以在电动机中间轴大齿轮14b与电动机中间轴小齿轮14a之间设有推力轴承14c3,在电动机中间轴大齿轮14b与电动机中间轴14之间设有滚针轴承14c4,通过滚针轴承14c4使得电动机中间轴大齿轮14b与电动机中间轴14之间可以存在转速差,即使得电动机中间轴大齿轮14b与电动机中间轴小齿轮14a之间可以存在转速差。断开组件14c包括保持弹簧14c1和主动压盘14c2,主动压盘14c2可沿轴向移动地设于电动机中间轴小齿轮14a与电动机中间轴大齿轮14b之间,主动压盘14c2的两侧分别与电动机中间轴小齿轮14a和电动机中间轴大齿轮14b通过传递扭矩的花键配合连接。保持弹簧14c1沿轴向弹性顶压于电动机中间轴小齿轮14a与主动压盘14c2之间,保持弹簧14c1始终提供轴向推力。泵6通过来自发动机2的动力产生的驱动压力传输至主动压盘14c2并驱动主动压盘14c2朝电动机中间轴小齿轮14a移动。当泵6产生的驱动压力不能克服保持弹簧14c1的轴向推力时,由保持弹簧14c1的轴向推力使主动压盘14c2的两侧分别与电动机中间轴小齿轮14a和电动机中间轴大齿轮14b通过花键保持连接并传递扭矩,此时,断开组件14c结合,使电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输呈连接状态。当泵6产生的驱动压力能够克服保持弹簧14c1的轴向推力并驱动主动压盘14c2朝电动机中间轴小齿轮14a移动而压缩保持弹簧14c1,使得主动压盘14c2与电动机中间轴大齿轮14b分开时,断开组件14c断开,电动机中间轴大齿轮14b与电动机中间轴小齿轮14a间的动力传输呈断开状态,此时保持弹簧14c1的轴向推力使主动压盘14c2与电动机中间轴小齿轮14a通过花键保持连接并传递扭矩,仅有电动机中间轴小齿轮14a随差速器11转动。泵6产生的驱动压力的大小控制可以通过整车控制系统主动控制发动机轴4的转速来实现,因此可以根据整车运动模式需要实现断开组件14c结合或断开。
当然,本实施例的驱动装置1中的断开组件14c也可以根据不同车辆的性能使用要求设计成常结合结构或常断开结构。此外,本实施例的驱动装置1中的断开组件14c也不局限于上述液压驱动组件,也可以使用电子或电磁式驱动组件来实现电动机中间轴大齿轮14b与电动机中间轴小齿轮14a的结合和断开功能。但是从成本考虑,对于使用液压离合器模块的混合动力车辆而言,断开组件14c优选采用液压驱动组件来实现电动机中间轴大齿轮14b与电动机中间轴小齿轮14a的结合和断开功能。
参见图1,本实施例的驱动装置1中,离合器7具有离合器轴10,泵6具有泵轴9。自发动机2至半轴12的动力传输路径中布置有发动机轴4、泵轴9和离合器轴10,发动机轴4、泵轴9和离合器轴10均与半轴12平行布置。本实施例中,优选地,泵轴9与离合器轴10沿水平方向间隔平行布置。最佳地,泵轴9布置在发动机轴4与离合器轴10连线的前侧,以满足整车轴向空间及径向空间布置的最优化。
本实施例中,发动机轴4连接发动机的曲轴2a,发动机轴4与发动机的曲轴2a之间优选通过扭矩限制器3相连接。发动机轴4上设有发动机轴齿轮4a。泵轴9上设有泵轴齿轮9a,泵轴齿轮9a连接离合器7,泵轴齿轮9a与发动机轴齿轮4a相啮合。
进一步,离合器7包括固设于离合器轴10上的第一结合构件7a和与第一结合构件7a相对的第二结合构件7b,通过第二结合构件7b与第一结合构件7a的结合或分离实现离合器7连接或断开。第二结合构件7b连接离合器轴大齿轮10b,离合器轴大齿轮10b与泵轴齿轮9a相啮合,离合器轴10上设有离合器轴小齿轮10a,离合器轴小齿轮10a与差速器11的差速器齿轮11a相啮合。
由此,本实施例的驱动装置1将来自发动机2的动力传输至驱动轮13的半轴12的传输原理,亦即自发动机2至半轴12的动力传输路径的工作原理为:由发动机的曲轴2a转动带动发动机轴4转动,发动机轴齿轮4a随之转动,带动泵轴齿轮9a转动,由泵轴齿轮9a的转动带动泵轴9转动,泵6产生驱动压力并经第二高压管路6b传输至离合器7,使离合器7的第一结合构件7a与第二结合构件7b发生相对运动而结合或断开。当泵6产生的驱动压力满足离合器7的第一结合构件7a与第二结合构件7b结合所需的驱动压力要求时,第一结合构件7a与第二结合构件7b结合,离合器7呈连接状态;反之,离合器7呈断开状态。当离合器7连接时,由随泵轴9转动的泵轴齿轮9a带动离合器轴大齿轮10b转动,由离合器轴大齿轮10b驱动第二结合构件7b转动,并带动与之结合的第一结合构件7a同步转动,第一结合构件7a带动离合器轴10转动,离合器轴小齿轮10a随之转动并带动差速器齿轮11a转动,从而将来自发动机2的动力传输至差速器11并经差速器11传输至半轴12。
参见图1,本实施例的驱动装置1中,自发动机2至发电机8的动力传输路径中布置有发动机轴4和发电机轴5,发动机轴4和发电机轴5均与半轴12平行布置。自发动机2至发电机8的动力传输路径与自发动机2至半轴12的动力传输路径共用发动机轴4和发动机轴齿轮4a。发电机轴5连接发电机的转子轴8a,发电机轴5与发电机的转子轴8a同轴连接。发电机轴5上设有发电机轴齿轮5a,发电机轴齿轮5a与发动机轴齿轮4a相啮合。
由此,本实施例的驱动装置1将来自发动机2的动力传输至发电机8的传输原理,亦即发动机2至发电机8的动力传输路径的工作原理为:由发动机的曲轴2a转动带动发动机轴4转动,发动机轴齿轮4a随之转动并带动发电机轴齿轮5a转动,由发电机轴齿轮5a的转动带动发电机轴5转动,由发电机轴5的转动带动发电机的转子轴8a随之转动,从而将来自发动机2的动力传输至发电机8。
本实施例的驱动装置1的壳体17可以包括相对称的左壳体17a和右壳体17b,左壳体17a和右壳体17b在分型面17c处相对接形成在整车轴向上不存在外凸部分的布置空间,构成壳体17的内部空间。发动机轴4、发电机轴5、泵轴9、泵6、离合器轴10、离合器7、差速器11、电动机中间轴14和电动机轴15均布置收容在壳体17的内部空间中。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和替换,这些改进和替换也应视为本发明的保护范围。
Claims (10)
1.一种混合动力车辆的驱动装置,所述驱动装置将来自发动机(2)的动力传输至驱动轮(13)的半轴(12),所述驱动装置还将来自电动机(16)的动力传输至所述半轴(12),其特征在于,自所述电动机(16)至所述半轴(12)的动力传输路径中平行布置有电动机轴(15)和电动机中间轴(14),所述电动机轴(15)连接电动机的转子轴(16a),所述电动机轴(15)上设有电动机轴齿轮(15a),所述电动机中间轴(14)上设有电动机中间轴小齿轮(14a)、电动机中间轴大齿轮(14b)和断开组件(14c),所述电动机中间轴小齿轮(14a)与差速器(11)的差速器齿轮(11a)相啮合,所述差速器(11)连接所述半轴(12),所述电动机中间轴大齿轮(14b)与所述电动机轴齿轮(15a)相啮合,所述断开组件(14c)连接或断开所述电动机中间轴大齿轮(14b)与所述电动机中间轴小齿轮(14a)间的动力传输。
2.根据权利要求1所述的混合动力车辆的驱动装置,其特征在于,所述断开组件(14c)为液压驱动组件,自所述发动机(2)至所述半轴(12)的动力传输路径中布置有泵(6)和离合器(7),所述离合器(7)连接或断开来自所述发动机(2)的动力,所述泵(6)通过来自所述发动机(2)的动力产生驱动压力并将所述驱动压力传输至所述离合器(7)和所述断开组件(14c)。
3.根据权利要求2所述的混合动力车辆的驱动装置,其特征在于,所述电动机中间轴小齿轮(14a)固设于所述电动机中间轴(14)上,所述电动机中间轴大齿轮(14b)可沿周向转动地设于所述电动机中间轴(14)上,所述断开组件(14c)包括可沿轴向移动地设于所述电动机中间轴小齿轮(14a)与所述电动机中间轴大齿轮(14b)之间的主动压盘(14c2)和沿轴向弹性顶压于所述电动机中间轴小齿轮(14a)与所述主动压盘(14c2)之间的保持弹簧(14c1),所述主动压盘(14c2)的两侧分别与所述电动机中间轴小齿轮(14a)和所述电动机中间轴大齿轮(14b)通过传递扭矩的花键配合连接,所述泵(6)通过来自所述发动机(2)的动力产生的驱动压力传输至所述主动压盘(14c2)并驱动所述主动压盘(14c2)朝所述电动机中间轴小齿轮(14a)移动。
4.根据权利要求3所述的混合动力车辆的驱动装置,其特征在于,所述电动机中间轴大齿轮(14b)与所述电动机中间轴小齿轮(14a)之间设有推力轴承(14c3),所述电动机中间轴大齿轮(14b)与所述电动机中间轴(14)之间设有滚针轴承(14c4)。
5.根据权利要求2所述的混合动力车辆的驱动装置,其特征在于,所述泵(6)通过来自所述发动机(2)的动力产生的驱动压力分别经第一高压管路(6a)和第二高压管路(6b)传输至所述断开组件(14c)和所述离合器(7)。
6.根据权利要求2所述的混合动力车辆的驱动装置,其特征在于,所述离合器(7)具有离合器轴(10),所述泵(6)具有泵轴(9),所述泵轴(9)与所述离合器轴(10)沿水平方向间隔平行布置。
7.根据权利要求6所述的混合动力车辆的驱动装置,其特征在于,所述泵轴(9)上设有泵轴齿轮(9a),所述泵轴齿轮(9a)连接所述离合器(7),所述泵轴齿轮(9a)与发动机轴齿轮(4a)相啮合,所述发动机轴齿轮(4a)设于发动机轴(4)上,所述发动机轴(4)连接发动机的曲轴(2a)。
8.根据权利要求7所述的混合动力车辆的驱动装置,其特征在于,所述离合器(7)包括设于所述离合器轴(10)上的第一结合构件(7a)和与所述第一结合构件(7a)相对的第二结合构件(7b),所述第二结合构件(7b)连接离合器轴大齿轮(10b),所述离合器轴大齿轮(10b)与所述泵轴齿轮(9a)相啮合,所述离合器轴(10)上设有离合器轴小齿轮(10a),所述离合器轴小齿轮(10a)与所述差速器齿轮(11a)相啮合。
9.根据权利要求1所述的混合动力车辆的驱动装置,其特征在于,所述驱动装置还将来自发动机(2)的动力传输至发电机(8),发电机的转子轴(8a)与所述半轴(12)沿水平方向间隔平行设置。
10.根据权利要求9所述的混合动力车辆的驱动装置,其特征在于,自所述发动机(2)至所述发电机(8)的动力传输路径中平行布置有发动机轴(4)和发电机轴(5),所述发动机轴(4)连接发动机的曲轴(2a),所述发动机轴(4)上设有发动机轴齿轮(4a),所述发电机轴(5)连接发电机的转子轴(8a),所述发电机轴(5)上设有发电机轴齿轮(5a),所述发电机轴齿轮(5a)与所述发动机轴齿轮(4a)相啮合。
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